1. The utility model provides a whirl air inlet centrifugal fan, includes centrifugal fan shell body (1), its characterized in that: the top fixed mounting of centrifugal fan shell body (1) has a tuber plate (4), be provided with air outlet (3) on the play tuber plate (4), the lower extreme fixed mounting who goes out tuber plate (4) has air inlet plate (2), the left end of air inlet plate (2) is provided with air intake (8), the left end fixed mounting of air intake (8) has dust cover (11), the right-hand member fixed mounting of air inlet plate (2) has vortex circle (5), the rear end fixed mounting of air inlet plate (2) has bracing piece (9), the lower extreme fixed mounting of bracing piece (9) has support frame (10), the right-hand member fixed mounting of vortex circle (5) has motor (6), the lower extreme fixed mounting of motor (6) has backup pad (7).

2. The cyclone air intake centrifugal fan according to claim 1, characterized in that: the centrifugal fan comprises a centrifugal fan outer shell (1), wherein a cyclone air block (12) is fixedly mounted at the inner center position of the centrifugal fan outer shell (1), a connecting cylinder (13) is fixedly mounted at the top end of the cyclone air block (12), a fan cover (14) is fixedly mounted at the lower end of the connecting cylinder (13), a main shaft (16) is fixedly mounted at the inner top end center position of the fan cover (14), fan blades (15) are fixedly mounted at the outer part of the main shaft (16), a dust suction ring (22) is fixedly mounted at the left end of a dust cover (11), a transmission block (17) is fixedly mounted at the right end of the dust suction ring (22), a dust removal box (18) is fixedly mounted at the right end of the transmission block (17), a spring (21) is fixedly mounted at the lower end of the dust removal box (18), a base (20) is fixedly mounted at the lower end of the spring (21), and an ash outlet (19) is arranged at the middle position of the base (20), the vortex ring is characterized in that a vortex disc (23) is fixedly mounted in the middle of the vortex ring (5), and a gear (24) is arranged in the vortex disc (23).

3. The cyclone air intake centrifugal fan according to claim 1, characterized in that: the cyclone air block (12) is connected with the centrifugal fan outer shell (1) in a clamping mode through a buckle, and the connecting cylinder (13) is fixedly connected with the main shaft (16) through the fan cover (14).

4. The cyclone air intake centrifugal fan according to claim 1, characterized in that: the fan cover (14) covers the fan blades (15) and the main shaft (16), and the connecting cylinder (13) is rotatably connected with the fan blades (15) through the main shaft (16).

5. The cyclone air intake centrifugal fan according to claim 1, characterized in that: the fan blades (15) are provided with ten groups, the ten groups of fan blades (15) are uniformly distributed on the periphery of the main shaft (16), and the fan blades (15) are connected with the main shaft (16) through clamping buckles.

6. The cyclone air intake centrifugal fan according to claim 1, characterized in that: the dust cover (11) is fixedly connected with the dust removal box (18) through a transmission block (17), and the dust removal box (18) is elastically connected with the base (20) through a spring (21).

7. The cyclone air intake centrifugal fan according to claim 1, characterized in that: the supporting rods (9) are provided with four groups, the four groups of supporting rods (9) are uniformly distributed at corners of the centrifugal fan outer shell (1), the supporting frames (10) are provided with two groups, and the two groups of supporting frames (10) are respectively arranged at the bottom positions of the left end and the right end of the supporting rods (9).

8. The cyclone air intake centrifugal fan according to claim 1, characterized in that: a dust removal box (18) is fixedly arranged at the right end of the transfer block (17), and the dust removal box (18) comprises a shell (25), a dust removal net (35) and a dehumidification mechanism; the whole shell (25) is a tubular body, the left end of the shell (25) is sealed by a circular plate, the circular plate is used as a sealing plate, and a circular through hole is formed in the center of the sealing plate and is used as an air inlet; the dust removal net (35) is arranged in the right end of the shell (25), the dust removal net (35) is coaxial with the outer cylindrical surface of the shell (25), and the diameter of the dust removal net (35) is equal to the inner diameter of the shell (25);

the dehumidification mechanism is arranged in the middle of the inside of the shell (25), the material carrying disc (29) and the shell (25) are coaxially arranged in the shell (25), the cutting surface of the material carrying disc (29) is arc-shaped, the center of the material carrying disc (29) extends out of a cylinder rightwards, the cylinder penetrates through the support frame (41), the bottom end of the support frame (41) is fixedly connected to the bottom of the inside of the middle of the shell (25), a through hole is formed in the center of the cylinder, and a drying agent (28) is fully distributed in the through hole; the material loading plate (29) is provided with a partition plate (37), every two partition plates (37) are arranged in parallel, a transport groove is formed between the two parallel partition plates (37), one end of the transport groove far away from the radial direction of the shell (25) is provided with a protrusion, a plurality of transport grooves are uniformly distributed on the material loading plate (29) in an annular mode, the transport groove is covered by a blocking net (38), a discharge hole (30) is formed in the edge of the material loading plate (29), a drying agent (28) is placed in the transport groove, a baffle plate (36) is installed at the center of the left end of the material loading plate (29), the right end of the baffle plate (36) is contacted with the drying agent (28), an annular boss (40) is arranged inside the shell (25), one end, close to the material loading plate (29), of the boss (40) is a conical surface, the conical surface blocks the discharge hole (30), a plurality of vent holes (42) are uniformly distributed in the middle of the boss (40) in the circumferential direction, and a material conveying port (27) is formed at the top end of the boss (40), the left end of the material conveying port (27) is connected with the recovery channel (26), and the right end of the material conveying port (27) is connected with the material outlet (30); the recycling channel (26) is a tubular body, the left end of the recycling channel (26) is arc-shaped, the recycling channel (26) penetrates through a vent hole (42) in the top of a boss (40), a dryer (34) is installed at the right end of the recycling channel (26), a conveying plate is installed in the dryer (34), the conveying plate is arranged in the dryer (34) in a Z shape, vent holes (39) are formed in the top of the right end of the dryer (34), the vent holes (39) penetrate through the inner wall of the shell (25) and are communicated with the outside, an outlet is formed in the bottom of the right end of the dryer (34), and the outlet is connected with the conveying channel (33); the conveying channel (33) is a straight pipe, the left end of the conveying channel (33) is connected with the right end of a cylinder which extends out of the material carrying disc (29) rightwards, and the right end of the conveying channel (33) is connected with an outlet at the bottom of the right end of the dryer (34); the outer surface of a cylinder extending out of the material carrying disc (29) rightwards is connected with a belt (31), and a motor (32) arranged at the bottom of the center in the shell (25) drives the material carrying disc (29) to rotate through the belt (31).

Background

The centrifugal fan is a driven fluid machine which increases the pressure of gas and discharges the gas by means of input mechanical energy. Centrifugal fans are widely used in ventilation, dust removal and cooling of factories, mines, tunnels, cooling towers, vehicles, ships and buildings; ventilation and draught of boilers and industrial furnaces; cooling and ventilation in air conditioning equipment and household appliances; drying and selecting grains; wind tunnel wind source and air cushion boat inflation and propulsion.

Present centrifugal fan still has some weak points, for example, some centrifugal fans on the market now can only carry out the ventilation of airing exhaust, can not carry out the air among the induction centrifugal fan of spiral-flow type, lead to centrifugal fan volume of airing exhaust not enough, the dynamics undersize of airing exhaust, and when carrying out the during operation for a long time, centrifugal fan has a large amount of dust to adsorb and can not carry out effectual clearance in inside, only can use moist cloth to clean inside, otherwise the easy intaking of centrifugal fan part leads to damaging, thereby centrifugal fan's work efficiency has been reduced, centrifugal fan's use value still remains to be improved.

Therefore, the cyclone air inlet centrifugal fan is provided.

Disclosure of Invention

The invention aims to provide a cyclone air inlet centrifugal fan which can suck air into the centrifugal fan in a cyclone mode to increase the air exhaust amount, is additionally provided with a dust cover and can effectively prevent dust from entering the interior to cause part damage, so that the problems that some centrifugal fans in the market can only exhaust air and ventilate, cannot suck air into the centrifugal fan in a cyclone mode to cause insufficient air exhaust amount and too small air exhaust force of the centrifugal fan, a large amount of dust is adsorbed in the centrifugal fan and cannot be effectively cleaned when the centrifugal fan works for a long time, the interior can only be wiped by using wet cloth, otherwise, parts of the centrifugal fan are easy to enter water to cause damage, the working efficiency of the centrifugal fan is reduced, and the use value of the centrifugal fan is still to be improved are solved.

In order to achieve the purpose, the invention provides the following technical scheme: the utility model provides a whirl air inlet centrifugal fan, includes the centrifugal fan shell body, the top fixed mounting of centrifugal fan shell body has out the tuber plate, be provided with the air outlet on the tuber plate, the lower extreme fixed mounting who goes out the tuber plate has an air inlet board, the left end of air inlet board is provided with the air intake, the left end fixed mounting of air intake has the dust cover, the right-hand member fixed mounting of air inlet board has the vortex circle, the rear end fixed mounting of air inlet board has the bracing piece, the lower extreme fixed mounting of bracing piece has the support frame, the right-hand member fixed mounting of vortex circle has the motor, the lower extreme fixed mounting of motor has the backup pad.

By adopting the technical scheme, when the centrifugal fan is used, wind firstly passes through the dust cover, the dust-proof box is arranged inside the dust cover, internal dust firstly enters the dust cover through the dust suction ring, then enters the dust-proof box through the transmission block, then the dust-proof box is opened by utilizing the spring at the bottom end of the dust-proof box, the dust is discharged through the dust outlet, the rotational flow wind block is arranged inside the centrifugal fan, the rotational flow wind block can rotate through the mutual matching of the fan blades and the main shaft, and the wind is sucked into the centrifugal fan in a rotational flow manner through the protection of the fan cover; the dust prevention and removal are carried out inside the dust removal box, the dust outlet, the base, the spring and the dust suction ring through quick transmission, so that the working efficiency of the centrifugal fan is increased, the centrifugal fan is prevented from working for a long time, and the working efficiency is low or even the centrifugal fan and parts are directly damaged due to dust feeding inside the centrifugal fan; the cyclone air block, the connecting cylinder, the fan cover, the fan blades and the main shaft are rotated in the fan, so that the air exhaust amount of the centrifugal fan is improved, the service life of the centrifugal fan is prolonged, and the problem that the air exhaust amount is insufficient due to the fact that the air suction mode is too single when the centrifugal fan works for a long time is solved, the working efficiency of the centrifugal fan is improved, and the use value of the centrifugal fan is improved.

Preferably, the inside central point of centrifugal fan shell body puts fixed mounting to have whirl wind piece, the top fixed mounting of whirl wind piece has the connecting cylinder, the lower extreme fixed mounting of connecting cylinder has the fan housing, the inside top central point of fan housing puts fixed mounting to have the main shaft, the outside fixed mounting of main shaft has the flabellum, the left end fixed mounting of dust cover has the ash absorption circle, the right-hand member fixed mounting who inhales the ash absorption circle has the transmission piece, the right-hand member fixed mounting of transmission piece has the dust removal box, the lower extreme fixed mounting of dust removal box has the spring, the lower extreme fixed mounting of spring has the base, the intermediate position department of base is provided with the ash outlet, the intermediate position department fixed mounting of vortex circle has the vortex dish, the inside of vortex dish is provided with the gear.

Through adopting above-mentioned technical scheme, in order to make centrifugal fan can discharge in centrifugal fan with the mode of whirl through whirl wind piece with wind to at the discharge process, carry out effectual absorption with the dust through the dust cover, prevent that the machine from using for a long time and leading to damaging.

Preferably, the cyclone air block is connected with the outer shell of the centrifugal fan through a buckle in a clamping manner, and the connecting cylinder is fixedly connected with the main shaft through an air cover.

Through adopting above-mentioned technical scheme, in order to make the whirl tuber piece can be firm fix with centrifugal fan shell body.

Preferably, the fan cover covers the fan blades and the main shaft, and the connecting cylinder is rotatably connected with the fan blades through the main shaft.

By adopting the technical scheme, the cyclone air block can rotate more flexibly.

Preferably, the flabellum is provided with ten groups altogether, ten groups of flabellums evenly distributed are around the main shaft, pass through the buckle block connection between flabellum and the main shaft.

Through adopting above-mentioned technical scheme, in order to make the whirl wind piece can carry out more effective and discharge wind with the mode of whirl.

Preferably, the dust cover is fixedly connected with the dust removal box through a transmission block, and the dust removal box is elastically connected with the base through a spring.

Through adopting above-mentioned technical scheme, in order to make the dust cover can discharge the ash and carry out recycling through the ash hole.

Preferably, the bracing piece is provided with four groups altogether, four groups of bracing pieces evenly distributed are at the turning of centrifugal fan shell body, the support frame is provided with two sets altogether, two sets of support frames are installed respectively in both ends bottom position department about the bracing piece.

Through adopting above-mentioned technical scheme, can carry out more stable fixing for making centrifugal fan.

Preferably, the right end of the transfer block is fixedly provided with a dust removal box, and the dust removal box comprises a shell, a dust removal net and a dehumidification mechanism; the whole shell is a tubular body, the left end of the shell is sealed by a circular plate, the circular plate is used as a sealing plate, and a circular through hole is formed in the center of the sealing plate and is used as an air inlet; the dust removal net is arranged in the right end of the shell, the dust removal net is coaxial with the outer cylindrical surface of the shell, and the diameter of the dust removal net is equal to the inner diameter of the shell;

the dehumidification mechanism is arranged in the middle of the inside of the shell, the material carrying disc and the shell are coaxially arranged in the shell, the cutting surface of the material carrying disc is arc-shaped, the center of the material carrying disc extends out of a cylinder rightwards, the cylinder penetrates through the support frame, the bottom end of the support frame is fixedly connected to the bottom of the inside of the middle of the shell, a through hole is formed in the center of the cylinder, and a drying agent is fully distributed in the through hole; the drying machine is characterized in that the material carrying disc is provided with partition plates, every two partition plates are installed in parallel, a conveying groove is formed between the two parallel partition plates, one end of the conveying groove far away from the radial direction of the shell is provided with a protrusion, a plurality of conveying grooves are uniformly distributed on the material carrying disc in an annular mode and covered by a blocking net, a discharge hole is formed in the edge of the material carrying disc, drying agents are placed in the conveying groove, a baffle is installed in the center of the left end of the material carrying disc, the right end of the baffle is in contact with the drying agents, an annular boss is arranged inside the shell, one end, close to the material carrying disc, of the boss is a conical surface, the conical surface blocks the discharge hole, a plurality of ventilation holes are uniformly distributed in the middle of the boss in the circumferential direction, the top end of the boss is provided with a material conveying port, the left end of the material conveying port is connected with a recovery channel, and the right end of the material conveying port is connected with the discharge hole; the recycling channel is a tubular body, the left end of the recycling channel is arc-shaped, the recycling channel penetrates through the vent hole in the top of the boss, the right end of the recycling channel is provided with the dryer, the dryer is internally provided with the conveying plate, the conveying plate is arranged in the dryer in a Z shape, the top of the right end of the dryer is provided with the vent hole, the vent hole penetrates through the inner wall of the shell to be communicated with the outside, the bottom of the right end of the dryer is provided with an outlet, and the outlet is connected with the conveying channel; the conveying channel is a straight pipe, the left end of the conveying channel is connected with the right end of a cylinder extending out of the material carrying disc rightwards, and the right end of the conveying channel is connected with an outlet at the bottom of the right end of the dryer; the outer surface of a cylinder extending out of the material carrying disc rightwards is connected with a belt, and a motor arranged at the bottom of the center inside the shell drives the material carrying disc to rotate through the belt.

By adopting the technical scheme, when the equipment is used, negative pressure is generated in the shell, air in a cold and humid environment enters the dedusting box from the air inlet, the air enters the dedusting box and is firstly contacted with the drying agent on the material carrying disc, the drying agent dries the air, the inner part of the dedusting box is prevented from being frozen at low temperature, and the dried air passes through the plurality of ventilation holes uniformly distributed on the boss and then is subjected to dedusting treatment through the dedusting net; the motor passes through the belt and drives the rotation of carrying the charging tray and produce centrifugal force, under the effect of centrifugal force, carry the drier on the charging tray and can outwards extrude along the conveyer trough, thereby the drier constantly absorbs the vapor in the air and makes self quality increase, the centrifugal force increase that the drier received, finally the drier can be crowded protruding on the conveyer trough, pass through the delivery port and retrieve the passageway entering desiccator carrying the charging tray upper end, the desiccator carries out drying process to the drier, the moisture passes through the bleeder vent and discharges, the drier of stoving passes through desiccator right-hand member bottom export and gets into transfer passage, under the effect of gravity, the drier passes through transfer passage and carries the charging tray again in, reuse, the cost is reduced, and the efficiency is improved.

Compared with the prior art, the invention has the beneficial effects that: when the centrifugal fan is used, wind firstly passes through the dust cover, the dust-proof box is arranged inside the dust cover, the dust inside the dust cover firstly enters the dust cover through the dust suction ring, then enters the dust removal box through the transmission block, then the dust removal box is opened by utilizing a spring at the bottom end of the dust removal box, the dust is discharged through the dust outlet, a rotational flow wind block is arranged inside the centrifugal fan, the rotational flow wind block can rotate through the mutual matching of the fan blades and the main shaft, and the wind is sucked into the centrifugal fan in a rotational flow manner through the protection of the fan cover; the dust prevention and removal are carried out inside the dust removal box, the dust outlet, the base, the spring and the dust suction ring through quick transmission, so that the working efficiency of the centrifugal fan is increased, the centrifugal fan is prevented from working for a long time, and the working efficiency is low or even the centrifugal fan and parts are directly damaged due to dust feeding inside the centrifugal fan; the cyclone air block, the connecting cylinder, the fan cover, the fan blades and the main shaft are rotated in the centrifugal fan, so that the air exhaust amount of the centrifugal fan is increased, the service life of the centrifugal fan is prolonged, and the problem that the air exhaust amount is insufficient due to an excessively single air suction mode when the centrifugal fan works for a long time is solved, so that the working efficiency of the centrifugal fan is improved, and the use value of the centrifugal fan is also improved; the dust removal box is provided with a dehumidification mechanism, so that the equipment can be used in a cold and humid environment.

Drawings

FIG. 1 is a schematic structural view of a centrifugal fan according to the present invention;

FIG. 2 is a schematic structural view of a swirl block of the present invention;

FIG. 3 is a schematic structural view of the dust boot of the present invention;

FIG. 4 is a schematic view of the construction of the vortex ring of the present invention;

FIG. 5 is a schematic view of the dust-removing box of the present invention;

FIG. 6 is a schematic view of the structure of the material loading tray of the present invention.

In the figure: 1. a centrifugal fan outer casing; 2. an air inlet plate; 3. an air outlet; 4. an air outlet plate; 5. an eddy current ring; 6. a motor; 7. a support plate; 8. an air inlet; 9. a support bar; 10. a support frame; 11. a dust cover; 12 swirl blocks; 13. a connecting cylinder; 14. a fan housing; 15. a fan blade; 16. a main shaft; 17. a transfer block; 18. a dust removal box; 19. an ash outlet; 20. a base; 21. a spring; 22. a dust absorbing ring; 23. a vortex disk; 24. a gear; 25. a housing; 26. a recovery channel; 27. a material conveying port; 28. a desiccant; 29. a material carrying disc; 30. a discharge port; 31. a belt; 32. a motor; 33. a delivery channel; 34. a dryer; 35. a dust removal net; 36. a baffle plate; 37. a partition plate; 38. blocking; 39. air holes are formed; 40. a boss; 41. a support frame; 42. a vent hole.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1 to 6, the present invention provides a technical solution: the utility model provides a whirl air inlet centrifugal fan, as shown in fig. 1 and fig. 4, includes centrifugal fan shell body 1, the top fixed mounting of centrifugal fan shell body 1 has a tuber plate 4, be provided with air outlet 3 on the tuber plate 4, the lower extreme fixed mounting who goes out tuber plate 4 has air inlet plate 2, the left end of air inlet plate 2 is provided with air intake 8, the left end fixed mounting of air intake 8 has dust cover 11, the right-hand member fixed mounting of air inlet plate 2 has vortex circle 5, the rear end fixed mounting of air inlet plate 2 has bracing piece 9, the lower extreme fixed mounting of bracing piece 9 has support frame 10, the right-hand member fixed mounting of vortex circle 5 has motor 6, the lower extreme fixed mounting of motor 6 has backup pad 7.

As shown in fig. 2 and 3, a cyclone air block 12 is fixedly installed at the inner center position of the centrifugal fan outer casing 1, the top end of the cyclone air block 12 is fixedly provided with a connecting cylinder 13, the lower end of the connecting cylinder 13 is fixedly provided with an air cover 14, a main shaft 16 is fixedly installed at the center of the top end inside the fan housing 14, fan blades 15 are fixedly installed outside the main shaft 16, the left end of the dust cover 11 is fixedly provided with a dust absorbing ring 22, the right end of the dust absorbing ring 22 is fixedly provided with a transmission block 17, the right end of the transfer block 17 is fixedly provided with a dust removal box 18, the lower end of the dust removal box 18 is fixedly provided with a spring 21, a base 20 is fixedly arranged at the lower end of the spring 21, an ash outlet 19 is arranged at the middle position of the base 20, a vortex disc 23 is fixedly installed at the middle position of the vortex ring 5, and a gear 24 is arranged inside the vortex disc 23.

The cyclone air block 12 is connected with the centrifugal fan outer shell 1 through a buckle in a clamping manner, and the connecting cylinder 13 is fixedly connected with the main shaft 16 through the fan cover 14.

By adopting the technical scheme, when the centrifugal fan is used, wind firstly passes through the dust cover 11, the dust removing box 18 is arranged inside the dust cover 11, internal dust firstly enters the dust cover 11 through the dust absorbing ring 22, then enters the dust removing box 18 through the transmission block 17, then the dust removing box 18 is opened by utilizing the spring 21 at the bottom end of the dust removing box 18, the dust is discharged through the dust outlet 19, the cyclone wind block 12 is arranged inside the centrifugal fan, the cyclone wind block 12 rotates through the mutual matching of the fan blades 15 and the main shaft 16, and the wind is absorbed into the centrifugal fan in a cyclone mode through the protection of the fan cover 14; the dust is prevented and removed from the interior through the transmission block 17, the dust removal box 18, the ash outlet 19, the base 20, the spring 21 and the ash suction ring 22, so that the working efficiency of the centrifugal fan is increased, the centrifugal fan is prevented from working for a long time, and the working efficiency is low or even the centrifugal fan and parts are directly damaged due to ash feeding; the cyclone air block 12, the connecting cylinder 13, the fan cover 14, the fan blades 15 and the main shaft 16 are rotated inside the fan, so that the air exhaust amount of the centrifugal fan is increased, the service life of the centrifugal fan is prolonged, and the phenomenon that the air exhaust amount is insufficient due to the fact that the air suction mode is too single when the centrifugal fan works for a long time is avoided, so that the working efficiency of the centrifugal fan is improved, and the use value of the centrifugal fan is also improved.

Specifically, as shown in fig. 2 and 3, a cyclone air block 12 is fixedly installed at the inner center position of the outer casing 1 of the centrifugal fan, the top end of the cyclone air block 12 is fixedly provided with a connecting cylinder 13, the lower end of the connecting cylinder 13 is fixedly provided with an air cover 14, a main shaft 16 is fixedly installed at the center of the top end inside the fan housing 14, fan blades 15 are fixedly installed outside the main shaft 16, the left end of the dust cover 11 is fixedly provided with a dust absorbing ring 22, the right end of the dust absorbing ring 22 is fixedly provided with a transmission block 17, the right end of the transfer block 17 is fixedly provided with a dust removal box 18, the lower end of the dust removal box 18 is fixedly provided with a spring 21, a base 20 is fixedly arranged at the lower end of the spring 21, an ash outlet 19 is arranged at the middle position of the base 20, a vortex disc 23 is fixedly installed at the middle position of the vortex ring 5, and a gear 24 is arranged inside the vortex disc 23.

Through adopting above-mentioned technical scheme, in order to make centrifugal fan can discharge wind in centrifugal fan with the mode of whirl through whirl wind piece 12 to at the discharge process, carry out effectual absorption with the dust through dust cover 11, prevent that the machine from using for a long time and leading to damaging.

Specifically, as shown in fig. 1 and 2, the cyclone air block 12 is connected with the centrifugal fan outer casing 1 by a snap fit, and the connecting cylinder 13 is fixedly connected with the main shaft 16 by the fan cover 14.

By adopting the technical scheme, the cyclone air block 12 can be firmly fixed with the outer shell 1 of the centrifugal fan.

Specifically, as shown in fig. 2, the fan cover 14 covers the fan blades 15 and the main shaft 16, and the connecting cylinder 13 is rotatably connected to the fan blades 15 through the main shaft 16.

By adopting the technical scheme, the cyclone air block 12 can rotate more flexibly.

Specifically, as shown in fig. 2, the fan blades 15 are provided with ten groups, the ten groups of fan blades 15 are uniformly distributed around the main shaft 16, and the fan blades 15 are connected with the main shaft 16 through a snap fit.

By adopting the technical scheme, in order to enable the cyclone wind block 12 to more effectively discharge wind in a cyclone mode.

Specifically, as shown in fig. 3, the dust cover 11 is fixedly connected to the dust box 18 through the transmission block 17, and the dust box 18 is elastically connected to the base 20 through the spring 21.

By adopting the technical scheme, the dust can be discharged from the dust cover 11 through the dust outlet 19 and recycled.

Specifically, as shown in fig. 1, four sets of support rods 9 are provided, the four sets of support rods 9 are uniformly distributed at corners of the centrifugal fan outer casing 1, two sets of support frames 10 are provided, and the two sets of support frames 10 are respectively installed at bottom positions of left and right ends of the support rods 9.

Through adopting above-mentioned technical scheme, can carry out more stable fixing for making centrifugal fan.

Specifically, as shown in fig. 5, a dust removal box 18 is fixedly mounted at the right end of the transfer block 17, and the dust removal box 18 includes a housing 25, a dust removal net 35 and a dehumidification mechanism; the whole shell 25 is a tubular body, the left end of the shell 25 is sealed by a circular plate, the circular plate is used as a sealing plate, and the center of the sealing plate is provided with a circular through hole which is used as an air inlet; the dust removal net 35 is arranged in the right end of the shell 25, the dust removal net 35 is coaxial with the outer cylindrical surface of the shell 25, and the diameter of the dust removal net 35 is equal to the inner diameter of the shell 25;

the dehumidification mechanism is arranged in the middle of the inside of the shell 25, the material carrying disc 29 and the shell 25 are coaxially arranged in the shell 25, the cutting surface of the material carrying disc 29 is arc-shaped, the center of the material carrying disc 29 extends out of a cylinder rightwards, the cylinder penetrates through the support frame 41, the bottom end of the support frame 41 is fixedly connected to the bottom of the inside of the middle of the shell 25, a through hole is formed in the center of the cylinder, and a drying agent 28 is fully distributed in the through hole; the material loading disc 29 is provided with partition plates 37, every two partition plates 37 are installed in parallel, a transport groove is formed between the two parallel partition plates 37, one end of the transport groove far away from the radial direction of the shell 25 is provided with a protrusion, a plurality of transport grooves are uniformly distributed on the material loading disc 29 in an annular mode, the transport grooves are covered by a blocking net 38, a discharge hole 30 is formed in the edge of the material loading disc 29, a drying agent 28 is placed in the transport groove, a baffle plate 36 is installed in the center of the left end of the material loading disc 29, the right end of the baffle plate 36 is in contact with the drying agent 28, an annular boss 40 is arranged inside the shell 25, one end, close to the material loading disc 29, of the boss 40 is a conical surface, the conical surface blocks the discharge hole 30, a plurality of vent holes 42 are uniformly distributed in the middle of the boss 40 in the circumferential direction, the top end of the boss 40 is provided with a material conveying port 27, the left end of the material conveying port 27 is connected with the recovery channel 30, and the right end of the material conveying port 27 is connected with the discharge hole 30; the recycling channel 26 is a tubular body, the left end of the recycling channel 26 is arc-shaped, the recycling channel 26 penetrates through the vent holes 42 in the tops of the bosses 40, the dryer 34 is installed at the right end of the recycling channel 26, the conveying plates are installed in the dryer 34 and arranged in a Z shape in the dryer 34, vent holes 39 are formed in the top of the right end of the dryer 34, the vent holes 39 penetrate through the inner wall of the shell 25 to be communicated with the outside, an outlet is formed in the bottom of the right end of the dryer 34, and the outlet is connected with the conveying channel 33; the conveying channel 33 is a straight pipe, the left end of the conveying channel 33 is connected with the right end of a cylinder extending rightwards from the material carrying disc 29, and the right end of the conveying channel 33 is connected with an outlet at the bottom of the right end of the dryer 34; the outer surface of the cylinder extending to the right of the material loading tray 29 is connected with a belt 31, and a motor 32 arranged at the bottom of the center in the shell 25 drives the material loading tray 29 to rotate through the belt 31.

By adopting the technical scheme, when the equipment is used, negative pressure is generated in the shell 25, air in a cold and humid environment enters the dust removal box 18 from the air inlet, the air enters the dust removal box 18 and is firstly contacted with the drying agent 28 on the material carrying disc 29, the drying agent 28 dries the air, the low temperature is prevented from icing the interior of the dust removal box 18, and the dried air passes through the plurality of air vents 42 uniformly distributed on the lug boss 40 and then is subjected to dust removal treatment through the dust removal net 35; the motor 32 drives the material carrying disc 29 to rotate through the belt 31 to generate centrifugal force, under the action of the centrifugal force, the drying agent 28 on the material carrying disc 29 can be extruded outwards along the conveying groove, the drying agent 28 continuously absorbs water vapor in the air to increase the mass of the drying agent 28, the centrifugal force applied to the drying agent 28 is increased, finally the drying agent 28 can be extruded through the protrusions on the conveying groove, the drying agent 28 enters the dryer 34 through the conveying opening 27 and the recovery channel 26 at the upper end of the material carrying disc 29, the dryer 34 performs drying treatment on the drying agent 28, moisture is discharged through the air holes 39, the dried drying agent 28 enters the conveying channel 33 through the outlet at the bottom of the right end of the dryer 34, and under the action of gravity, the drying agent 28 is conveyed into the material carrying disc 29 again through the conveying channel 33 for repeated use, the cost is reduced, and the efficiency is improved.

The working principle is as follows: the cyclone air block 12 inside the centrifugal fan transmits the wind into the fan cover 14 through the connecting cylinder 13, then the fan blades 15 in the fan housing can rotate circularly and repeatedly through the rotation of the main shaft 16, the wind power of the rotational flow is generated, then the wind is discharged into the centrifugal fan in a rotational flow mode, meanwhile, the dust cover 11 can suck the dust in the wind into the dust cover 11 through the dust suction ring, then the dust is sucked into the dust removing box through the transfer block 17, then the dust removing box is opened inside through a spring at the bottom end, then, ash is discharged through an ash outlet on the base 20, and meanwhile, dust is prevented and removed from the interior through the transmission block 17, the dust removal box 18, the ash outlet 19, the base 20, the spring 21 and the ash suction ring 22, so that the working efficiency of the centrifugal fan is increased, the centrifugal fan is prevented from working for a long time, and the low working efficiency and even direct damage caused by the ash entering of an internal fan and parts are prevented; the cyclone air block 12, the connecting cylinder 13, the fan cover 13, the fan blades 14 and the main shaft 15 are rotated inside the fan, so that the air exhaust amount of the centrifugal fan is increased, the service life of the centrifugal fan is prolonged, and the phenomenon that the air exhaust amount is insufficient due to the fact that the air suction mode is too single when the centrifugal fan works for a long time is avoided, so that the working efficiency of the centrifugal fan is improved, and the use value of the centrifugal fan is also improved.

When the device is used in a cold and humid environment, air is sucked into the dust removal box 18, negative pressure is generated inside the shell 25 of the dust removal box 18, the air in the cold and humid environment enters the dust removal box 18 from the air inlet, the air enters the dust removal box 18 and is firstly contacted with the drying agent 28 on the material carrying disc 29, the drying agent 28 dries the air to prevent the freezing of the interior of the dust removal box 18 due to low temperature, the dried air passes through the plurality of air vents 30 uniformly distributed on the lug boss 40 and then is subjected to dust removal treatment through the dust removal net 35; the motor 32 drives the material carrying disc 29 to rotate through the belt 31 to generate centrifugal force, under the action of the centrifugal force, the drying agent 28 on the material carrying disc 29 can be extruded outwards along the conveying groove, the drying agent 28 continuously absorbs water vapor in the air to increase the mass of the drying agent 28, the centrifugal force applied to the drying agent 28 is increased, finally the drying agent 28 can be extruded through the protrusions on the conveying groove, the drying agent 28 enters the dryer 34 through the conveying opening 27 and the recovery channel 26 at the upper end of the material carrying disc 29, the dryer 34 performs drying treatment on the drying agent 28, moisture is discharged through the air holes 39, the dried drying agent 28 enters the conveying channel 33 through the outlet at the bottom of the right end of the dryer 34, and under the action of gravity, the drying agent 28 is conveyed into the material carrying disc 29 again through the conveying channel 33 for repeated use, the cost is reduced, and the efficiency is improved.

The using method comprises the following steps: when using centrifugal fan, at first switch on the power through motor 6, then centrifugal fan will pass through dust cover 11 on the air inlet plate 2, inhale the dust in the wind in the dust cover in the dustproof box of dust cover inside, then ash is discharged through the ash hole, then wind can enter into wind piece 12 in inside, enter into fan housing 14 through connecting cylinder 13, then inhale wind into centrifugal fan's air outlet with the mode of whirl with wind through flabellum and pivot, discharge wind through air outlet 3 on the play aerofoil 4 again at last, at the in-process of centrifugal fan work, centrifugal fan can be fixed through bracing piece 9 and support frame 10, motor 6 of centrifugal fan shell body 1 right-hand member can support fixedly through backup pad 7, use accomplish the back regularly clear up can, so that continue to use next time.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like, indicate orientations and positional relationships based on those shown in the drawings, and are used only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be considered as limiting the present invention.

Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first", "second", may explicitly or implicitly include one or more of the described features. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise. Furthermore, the terms "mounted," "connected," and "connected" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.