1. A fresh air machine with a replaceable filter screen comprises a fan main body (1) and is characterized in that a junction box (2) is fixedly arranged in the middle of the top end of the fan main body (1), an air inlet end of the fan main body (1) is fixedly communicated with one end of a connecting pipe (3), a limiting hoop (13) is fixedly arranged on one side of the outer wall of the connecting pipe (3), two sides of the inner wall of the limiting hoop (13) are respectively and alternately connected with one side of the outer wall of two connecting frames (14), one end of each of the two connecting frames (14) is provided with a positioning screw hole, the inner wall of each of the two positioning screw holes is respectively in threaded connection with the outer wall of each of two positioning bolts (16), one side of each of the two connecting frames (14) is fixedly provided with a handle (15), the other side of each of the two connecting frames (14) is respectively and fixedly connected with one end of two sides of a placing box (17), and two sides of the inner wall of the placing box (17) are respectively and provided with a limiting strip (23), two the spacing groove that the outer wall of spacing (23) was seted up with the both sides of fixed cover (24) respectively alternates to be connected, the one side of fixed cover (24) inner wall alternates with the outer wall of active carbon adsorption otter board (25) to be connected, and the opposite side of fixed cover (24) outer wall alternates with the outer wall of straining dirt otter board (26) to be connected, the middle part of active carbon adsorption otter board (25) one end and the middle part of straining dirt otter board (26) one end are all fixed and are equipped with the brace.

2. The fresh air machine with the replaceable filter screen according to claim 1, wherein a rubber plug strip is fixedly arranged on the side of one end of the placing box (17), the outer wall of the rubber plug strip is in penetrating connection with a circular plug groove formed in the side of the other end of the connecting pipe (3), and a sealing gasket (22) is fixedly arranged on the surface of one end of the placing box (17).

3. The fresh air machine with the replaceable filter screen as claimed in claim 2, wherein a connecting block (18) is fixedly arranged at the other end of one side of the placing box (17), a movable groove is formed in one end of the connecting block (18) and is hinged to a movable block arranged in the middle of one side of the protecting mesh cover (19), a buckle (21) is hinged to one side of one end of the protecting mesh cover (19) through a hinge, and a buckle (20) corresponding to the buckle (21) is fixedly arranged at the other end of the other side of the placing box (17).

4. The fresh air machine with the replaceable filter screen as claimed in claim 1, wherein a first fixing disc (5) is fixedly arranged at the air outlet end of the fan main body (1), the side of one end of the first fixing disc (5) is fixedly connected with the side of one end of the second fixing disc (6) through a plurality of fixing bolts, the side of the other end of the second fixing disc (6) is fixedly connected with the side of one end of the threaded hose (7), the side of the other end of the threaded hose (7) is fixedly connected with the side of one end of the connecting disc (8), and a plurality of uniformly distributed connecting screw holes are formed in the side of the other end of the connecting disc (8).

5. The fresh air machine with the replaceable filter screen as claimed in claim 1, wherein a rotating shaft (28) is fixedly arranged in the middle of one side of the fan main body (1), one side of the outer wall of the rotating shaft (28) is fixedly connected with the inner wall of a rotating bearing, the outer wall of the rotating bearing is fixedly connected with the outer wall of a bearing seat (27), and one side of the bearing seat (27) is fixedly connected with the middle of one side of one of the support frames (4).

6. The fresh air machine with the replaceable filter screen according to claim 5, wherein a connecting column (29) is fixedly arranged in the middle of the other side of the fan main body (1), one end of the connecting column (29) is fixedly connected with the middle of one side of the rotating disc (30), and two ends of the other side of the rotating disc (30) are fixedly provided with rotating studs (10).

7. The fresh air machine with the replaceable filter screen as claimed in claim 6, wherein one side of the outer wall of each of the two rotating studs (10) is respectively inserted into and connected with a rotating hole (9) formed in each of two ends of one side of the other support frame (4), the other side of the outer wall of each of the two rotating studs (10) is respectively in threaded connection with the inner walls of two limit nuts, the bottom ends of the two support frames (4) are respectively fixedly connected with two sides of the top end of the bottom plate (11), and a plurality of first fixing holes are uniformly distributed in each of two sides of the top end surface of the bottom plate (11).

8. The fresh air machine with the replaceable filter screen according to claim 7, wherein one end of the bottom plate (11) is fixedly connected with one end of the fixing plate (12), a plurality of second fixing holes are uniformly distributed on both sides of the top end of the fixing plate (12), a connecting lug (31) is fixedly arranged in the middle of the top end of the fixing plate (12), the top end of the connecting lug (31) is hinged to one end of the mechanical telescopic rod (32), and the other end of the mechanical telescopic rod (32) is hinged to one side of the bottom end of the fan main body (1) through a hinge.

9. The method for replacing a fresh air machine with a replaceable filter screen according to claim 7, wherein the method for replacing the fresh air machine with the replaceable filter screen comprises the following steps:

step 1, when the fan is used, a fan main body (1) is opened, the fan main body (1) works, air is sucked through a connecting pipe (3) connected with an air inlet end, air enters a placing box (17) through a protective net cover (19), the air is filtered through a dust filtering net plate (26) to filter dust and impurities in the air, and the air is purified and absorbed through an active carbon adsorption net plate (25), so that the cleanness of the sucked air of the fan can be guaranteed;

step 2, when the filter screen is replaced by a person, the person separates the hasps (21) from the buckles (20), then rotates the protective screen cover (19), separates the fixed cover (24) from the limiting strips (23) connected with the placing box (17), and then sequentially pulls out the dust filtering screen plate (26) and the activated carbon adsorption screen plate (25) from the fixed cover (24) for replacement;

step 3, the personnel can dismantle the clearance to placing box (17), rotatable locating bolt (16), hold handle (15) afterwards and rotate link (14), can make link (14) and spacing hoop (13) separation, and the personnel can dismantle the clearance with placing box (17), guarantee personnel's use.

Background

The fan is a fluid machine for exhausting gas, and is widely used for ventilation, dust exhaust and cooling in various industries.

The existing fan does not have the function of replacing the filter screen, a large amount of dust can be accumulated on the filter screen after the fan is used for a long time, the ventilation effect of the fan is influenced, the excessive dust accumulated on the filter screen can pollute ventilation gas, the use of personnel is not facilitated, and the fan is inconvenient to clean due to the fact that the function of replacing the filter screen is not provided, and the operation of the personnel is not convenient; the existing fan does not have an adjusting function, when the fan is installed, due to the fact that the installation positions are different, the requirements for the installation angle of the fan are different, and due to the fact that the fan does not have the adjusting function, people are inconvenient to install, and the applicability of the fan is reduced; meanwhile, the existing fan is inconvenient to connect, after the angle of the fan is adjusted, the connection of the air outlet end of the fan and the ventilation pipeline is troublesome, and the installation efficiency is influenced.

Disclosure of Invention

The invention aims to provide a fresh air fan with a replaceable filter screen and a replacing method thereof, so as to solve the problems in the background technology.

In order to achieve the purpose, the invention provides the following technical scheme: a new fan with a replaceable filter screen and a replacing method thereof comprise a fan main body, wherein a junction box is fixedly arranged in the middle of the top end of the fan main body, an air inlet end of the fan main body is fixedly communicated with one end of a connecting pipe, a limiting hoop is fixedly arranged on one side of the outer wall of the connecting pipe, two sides of the inner wall of the limiting hoop are respectively and alternately connected with one side of the outer walls of two connecting frames, one end of each connecting frame is provided with a positioning screw hole, the inner wall of each positioning screw hole is respectively and threadedly connected with the outer wall of each positioning bolt, one side of each connecting frame is fixedly provided with a handle, the other side of each connecting frame is respectively and fixedly connected with one end of each side of a placing box, two sides of the inner wall of the placing box are respectively and fixedly provided with a limiting strip, the outer walls of the two limiting strips are respectively and alternately connected with limiting grooves formed in two sides of a fixing cover, one side of the inner wall of the fixing cover is in alternate connection with the outer wall of an activated carbon adsorption screen plate, and the other side of the outer wall of the fixed cover is connected with the outer wall of the dust filtering screen plate in an inserting mode, and the middle of one end of the activated carbon adsorption screen plate and the middle of one end of the dust filtering screen plate are both fixedly provided with pull strips.

Preferably, the fixed rubber stuff that is equipped with of avris of placing box one end, the circular caulking groove that the outer wall of rubber stuff and the avris of the connecting pipe other end were seted up alternates and is connected, the fixed surface of placing box one end is equipped with sealed the pad.

Preferably, the other end of placing box one side is fixed and is equipped with the connecting block, the one end of connecting block is seted up movable groove and is articulated with the movable block that the middle part of protection wire cover one side was equipped with, one side of protection wire cover one end is articulated through the hinge to have the hasp, the other end of placing the box opposite side is fixed to be equipped with the buckle that corresponds with the hasp.

Preferably, the air-out end of fan main part is fixed and is equipped with first fixed disk, the avris of first fixed disk one end is through the avris fixed connection of a plurality of fixing bolt and second fixed disk one end, the avris of the second fixed disk other end and the avris fixed connection of thread hose one end, the avris of the thread hose other end and the avris fixed connection of connection pad one end, a plurality of evenly distributed's connection screw hole has been seted up to the avris of the connection pad other end.

Preferably, the middle part of fan main part one side is fixed and is equipped with the pivot, one side of pivot outer wall and rolling bearing's inner wall fixed connection, rolling bearing's outer wall and the outer wall fixed connection of bearing frame, one side of bearing frame and the middle part fixed connection of one side of one of them support frame.

Preferably, a connecting column is fixedly arranged in the middle of the other side of the fan main body, one end of the connecting column is fixedly connected with the middle of one side of the rotating disc, and rotating studs are fixedly arranged at two ends of the other side of the rotating disc.

Preferably, one side of the outer wall of each rotary stud is respectively and alternately connected with the rotary holes formed in the two ends of one side of the other support frame, the other side of the outer wall of each rotary stud is respectively in threaded connection with the inner walls of the two limit nuts, the bottom ends of the two support frames are respectively and fixedly connected with the two sides of the top end of the bottom plate, and a plurality of uniformly distributed first fixing holes are formed in the two sides of the surface of the top end of the bottom plate.

Preferably, the one end of bottom plate and the one end fixed connection of fixed plate, a plurality of evenly distributed's second fixed orifices have all been seted up to the both sides on fixed plate top, the fixed engaging lug that is equipped with in middle part on fixed plate top, the top of engaging lug is articulated with the one end of mechanical telescopic link, the other end of mechanical telescopic link passes through the hinge and articulates with one side of fan main part bottom.

The invention has the technical effects and advantages that:

(1) the connecting pipe connected through the fan main body is connected with the limiting hoop, the connecting frame connected with the placing box is connected with the limiting hoop, the active carbon adsorption screen plate and the dust filtering screen plate are arranged in the fixing cover connected with the limiting strip, so that the fan has the function of replaceable filter screens, the ventilation effect can be ensured for the dust filtering purification of the extracted air when the fan works, the placing box can be disassembled after long-time use, the placing box can be cleaned, the active carbon adsorption screen plate and the dust filtering screen plate can be replaced, the cleaning by personnel is more convenient, and the operation by personnel is facilitated;

(2) the rotating shaft connected with the fan main body is connected with the rotating bearing in the bearing seat, the rotating stud connected with the rotating disc is inserted and connected with the rotating hole formed in the supporting frame, so that the fan has an adjusting function, personnel can adjust the angle of the fan according to the installation position, the applicability of the fan is improved, the connecting lug connected with the fixed plate is hinged with the mechanical telescopic rod, the mechanical telescopic rod is hinged with the fan main body through a hinge, the support of the fan can be guaranteed, and the stable operation of the fan is guaranteed;

(3) the first fixing disc connected with the air outlet end of the fan main body is connected with the second fixing disc, the threaded hose connected with the second fixing disc is connected with the connecting disc, the fan and the ventilation pipeline can be connected after the angle of the fan is adjusted, and the installation of personnel is more convenient.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic view of the connection structure of the connection pipe of the present invention;

FIG. 3 is a schematic view of the internal structure of the storage case of the present invention;

FIG. 4 is a schematic top view of the present invention;

fig. 5 is a side view of the present invention.

In the figure: 1. a fan main body; 2. a junction box; 3. a connecting pipe; 4. a support frame; 5. a first fixed disk; 6. a second fixed disk; 7. a threaded hose; 8. a connecting disc; 9. rotating the hole; 10. rotating the stud; 11. a base plate; 12. a fixing plate; 13. a limiting hoop; 14. a connecting frame; 15. a handle; 16. positioning bolts; 17. placing the box; 18. connecting blocks; 19. a protective mesh cover; 20. buckling; 21. a hasp; 22. a gasket; 23. a limiting strip; 24. a fixed cover; 25. an activated carbon adsorption screen plate; 26. a dust filter screen plate; 27. a bearing seat; 28. a rotating shaft; 29. connecting columns; 30. rotating the disc; 31. connecting lugs; 32. mechanical telescopic link.

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.

The invention provides a new fan with replaceable filter screen and a replacing method thereof as shown in figures 1-5, which comprises a fan main body 1, wherein a junction box 2 is fixedly arranged at the middle part of the top end of the fan main body 1, the air inlet end of the fan main body 1 is fixedly communicated with one end of a connecting pipe 3, one side of the outer wall of the connecting pipe 3 is fixedly provided with a limiting hoop 13, two sides of the inner wall of the limiting hoop 13 are respectively and alternately connected with one side of the outer walls of two connecting frames 14, one end of each connecting frame 14 is provided with a positioning screw hole, the inner walls of the two positioning screw holes are respectively and spirally connected with the outer walls of two positioning bolts 16, one side of each connecting frame 14 is fixedly provided with a handle 15, the other side of each connecting frame 14 is respectively and fixedly connected with one end of two sides of a placing box 17, two sides of the inner wall of the placing box 17 are respectively and fixedly provided with limiting strips 23, the outer walls of the two limiting strips 23 are respectively and alternately connected with limiting grooves formed on two sides of a fixing cover 24, one side of the inner wall of the fixed cover 24 is connected with the outer wall of the activated carbon adsorption screen plate 25 in an inserting way, the other side of the outer wall of the fixed cover 24 is connected with the outer wall of the dust filter screen plate 26 in an inserting way, and brace bars are fixedly arranged in the middle of one end of the activated carbon adsorption screen plate 25 and the middle of one end of the dust filter screen plate 26;

a rubber plug strip is fixedly arranged on the edge side of one end of the placing box 17, the outer wall of the rubber plug strip is inserted and connected with a circular plug groove arranged on the edge side of the other end of the connecting pipe 3, a sealing gasket 22 is fixedly arranged on the surface of one end of the placing box 17, the sealing performance of the connection of the placing box 17 and the connecting pipe 3 is ensured by the matching of the rubber plug strip and the sealing gasket 22, a connecting block 18 is fixedly arranged on the other end of one side of the placing box 17, a movable groove is formed in one end of the connecting block 18 and is hinged with a movable block arranged in the middle of one side of the protecting net cover 19, a hasp 21 is hinged on one side of one end of the protecting net cover 19, a buckle 20 corresponding to the hasp 21 is fixedly arranged on the other end of the placing box 17, a first fixing disc 5 is fixedly arranged on the air outlet end of the fan main body 1, the edge side of one end of the first fixing disc 5 is fixedly connected with the edge side of one end of the second fixing disc 6 through a plurality of fixing bolts, and the edge side of the other end of the second fixing disc 6 is fixedly connected with one end of the threaded hose 7, the side of the other end of the threaded hose 7 is fixedly connected with the side of one end of the connecting disc 8, the side of the other end of the connecting disc 8 is provided with a plurality of uniformly distributed connecting screw holes, the middle of one side of the fan main body 1 is fixedly provided with a rotating shaft 28, one side of the outer wall of the rotating shaft 28 is fixedly connected with the inner wall of a rotating bearing, the outer wall of the rotating bearing is fixedly connected with the outer wall of a bearing seat 27, and one side of the bearing seat 27 is fixedly connected with the middle of one side of one of the support frames 4;

a connecting column 29 is fixedly arranged in the middle of the other side of the fan main body 1, one end of the connecting column 29 is fixedly connected with the middle of one side of a rotating disc 30, two ends of the other side of the rotating disc 30 are both fixedly provided with rotating studs 10, one side of the outer wall of each rotating stud 10 is respectively inserted and connected with a rotating hole 9 formed in the two ends of one side of another supporting frame 4, the other side of the outer wall of each rotating stud 10 is respectively in threaded connection with the inner walls of two limit nuts, the bottom ends of the two supporting frames 4 are respectively fixedly connected with the two sides of the top end of a bottom plate 11, both sides of the top end surface of the bottom plate 11 are respectively provided with a plurality of uniformly distributed first fixing holes, one end of the bottom plate 11 is fixedly connected with one end of a fixing plate 12, both sides of the top end of the fixing plate 12 are respectively provided with a plurality of uniformly distributed second fixing holes, a connecting lug 31 is fixedly arranged in the middle of the top end of the fixing plate 12, and the top end of the connecting lug 31 is hinged with one end of a mechanical telescopic rod 32, the other end of the mechanical telescopic rod 32 is hinged with one side of the bottom end of the fan main body 1 through a hinge.

The working principle of the invention is as follows: when the fan is installed, a person can adjust the fan according to the installation position, the limit nut connected with the rotary stud 10 is loosened, then the fan main body 1 can be rotated, the rotary shaft 28 connected with the fan main body 1 rotates in the rotary bearing in the bearing seat 27, the connecting column 29 connected with the fan main body 1 is connected with the rotary disc 30, the rotary stud 10 connected with the rotary disc 30 rotates in the rotary hole 9 arranged on the supporting frame 4, the fan angle can be adjusted, at the moment, the mechanical telescopic rod 32 connected with the fan main body 1 stretches and retracts to ensure the support of the fan main body 1, the connecting lug 31 on the fixing plate 12 is hinged with the mechanical telescopic rod 32 to ensure the rotation of the mechanical telescopic rod 32, after the adjustment is finished, the person can install the fan through the first fixing hole arranged on the bottom plate 11 and the second fixing hole arranged on the fixing plate 12, when the fan is connected with the ventilation pipeline, the first fixing plate 5 connected with the air outlet end of the, the second fixing disk 6 is connected with a threaded hose 7, a person can adjust the threaded hose 7 according to an interface of a ventilation pipeline, a connecting disk 8 connected with the threaded hose 7 is convenient to be connected with the ventilation pipeline, when the fan is used, the fan main body 1 is opened, an air inlet end of the fan main body 1 is connected with the connecting pipe 3, air enters the placing box 17 through the protective net cover 19, the air filters dust and impurities in the air through the dust filtering net plate 26, then passes through the active carbon adsorption net plate 25, the active carbon adsorption net plate 25 purifies the air to ensure better ventilation effect, the fan can be cleaned after being used for a long time, the person twists the positioning bolt 16 connected with the connecting frame 14, then holds the handle 15 to rotate the connecting frame 14, the connecting frame 14 can be separated from the limiting hoop 13 on the connecting pipe 3, then the person separates the hasp 21 from the buckle 20, and rotates the protective net cover 19, personnel stimulate fixed cover 24, can make the spacing groove that fixed cover 24 seted up with place the spacing 23 separation that box 17 is connected, personnel stimulate the brace afterwards and can pull out dust filtration otter board 26 and active carbon adsorption otter board 25 to change the filter screen, clear up placing box 17 simultaneously, again through link 14 will place box 17 be connected with connecting pipe 3 can.

In the description of the present invention, unless otherwise expressly specified or limited, the terms "disposed," "mounted," "connected," and "secured" are to be construed broadly, e.g., as meaning fixedly connected, detachably connected, or integral to; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

The standard parts used by the invention can be purchased from the market, and the special-shaped parts can be customized according to the description and the description of the attached drawings.

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.