1. An explosion-proof weighing chamber, comprising:

the air conditioner comprises a main body, wherein an operation room, a first installation cavity and a second installation cavity are arranged in the main body, the second installation cavity is of an inverted L shape, the operation room and the first installation cavity are both positioned below the second installation cavity, two return air pore plates are arranged on one side, close to each other, of the operation room and the first installation cavity, a primary filter and a secondary filter are installed in the first installation cavity, the primary filter is matched with the two return air pore plates, an explosion-proof fan is fixedly installed on the inner wall of the bottom of the second installation cavity, an explosion-proof control electric box is installed on the inner wall of one side, close to the operation room, of the second installation cavity in an embedded mode, an installation box is fixedly installed in the second installation cavity, the installation box is connected with an air outlet of the explosion-proof fan through a pipeline, and an air exhaust efficient filter is fixedly installed on one side of the installation box, the utility model discloses a high efficiency air exhaust device, including the main part, be equipped with the orifice plate of airing exhaust in the main part, the mounted position of high efficiency air exhaust filter with the orifice plate looks adaptation of airing exhaust, the bottom fixed mounting of install bin has the high efficiency air supply filter, the top inner wall of control chamber with be equipped with the homoflow membrane between the second installation cavity, fixed mounting has explosion-proof LED lamp on the top inner wall of control chamber, the control chamber is close to be equipped with two explosion-proof sockets on the inner wall of one side of first installation cavity, be equipped with three differential pressure table on the explosion-proof control electronic box, just install explosion-proof speed governing electronic box on the explosion-proof control electronic box.

2. The explosion-proof weighing room of claim 1, wherein the explosion-proof speed-regulating electronic box is provided with a power indicator, a power start button, a power stop button, a work indicator, a lighting switch button, an emergency stop button and a speed regulator.

3. The explosion-proof weighing room of claim 1, wherein the box body of the explosion-proof control electrical box is formed by welding stainless steel plates, four threading holes are formed in the bottom of the box body, an explosion-proof joint (G internal thread) is matched, the box body is matched with a G explosion-proof pipe for use, a bottom plate is arranged inside the box body and is an insulating plate, and a handle is arranged on the explosion-proof control electrical box.

4. The explosion-proof weighing chamber according to claim 1, wherein the case body of the explosion-proof speed-regulating electronic box is formed by aluminum alloy die-casting, the surface of the case body is subjected to high-voltage electrostatic spraying, the top of the case body is provided with a threading hole, an explosion-proof joint (G internal thread) is matched with the G explosion-proof pipe for use, a bottom plate is matched inside the case body and is an insulating plate, and the explosion-proof speed-regulating electronic box is fixed by screws.

5. The explosion-proof weighing chamber of claim 1, wherein the body is formed by bending a 1.2mm thick SUS304# sanded stainless steel plate.

6. The explosion-proof weighing room of claim 1, wherein the two air return hole plates are each provided with a cleaning mechanism, the cleaning mechanism comprises an explosion-proof double-shaft motor, two connecting shafts, an air suction cover, a roller brush, two middle shafts, an explosion-proof cleaning motor, a first bevel gear, a second bevel gear, two connecting blocks and two transmission mechanisms, the explosion-proof double-shaft motor is fixedly installed on one side of the air return hole plate close to the operation room and is arranged right above the air return hole on the air return hole plate, the two connecting shafts are respectively and fixedly installed on two output shafts of the explosion-proof double-shaft motor, the air suction cover is arranged right below the two connecting shafts, the roller brush is arranged in the air suction cover, the two middle shafts are respectively and fixedly installed at two ends of the roller brush, the explosion-proof cleaning motor is fixedly installed at the top of the air suction cover, just the output shaft of explosion-proof clearance motor extends to in the cover of induced drafting, first conical gear fixed mounting be in on the output shaft of explosion-proof clearance motor, just the fixed cover of second conical gear is established correspondingly epaxially, just second conical gear with first conical gear meshes mutually, two the connecting block respectively fixed mounting be in the both sides of cover of induced drafting, two drive mechanism all locates on the return air orifice board, and two drive mechanism symmetry is located the both sides in the return air hole on the return air orifice board.

7. The explosion-proof weighing chamber of claim 6, wherein the transmission mechanism comprises two mounting blocks, a threaded rod, a moving block, a limiting rod, a third bevel gear and a fourth bevel gear, the two mounting blocks are both fixedly mounted on the return air hole plate, the threaded rod is rotatably mounted on the two mounting blocks, the moving block is sleeved on the threaded rod in a threaded manner, the limiting rod is fixedly mounted on the two mounting blocks, the moving block is slidably connected with the limiting rod, the third bevel gear is fixedly mounted at one end, away from the explosion-proof double-shaft motor, of the corresponding connecting shaft, the fourth bevel gear is fixedly mounted at the top end of the threaded rod, and the fourth bevel gear is meshed with the third bevel gear.

8. The explosion-proof weighing chamber of claim 6, wherein a hose is fixedly connected to the tail end of the suction hood.

Background

In the processes of pharmacy, microbiological research and scientific experiments, dust or powdery reagents need to be weighed and subpackaged in a weighing room. When dust or reagent is weighed in a weighing room which is used traditionally, the dust or the reagent may overflow and rise, so that the dust or the reagent leaks, the high-cleanliness environment of a working area outside the weighing room is polluted, and the dust or the reagent is sucked and damaged by workers outside the weighing room, so that great potential safety hazard is caused; also, the risk of explosion may be associated with the emission of some combustible dust into the air.

Therefore, it is necessary to provide an explosion-proof weighing chamber to solve the above technical problems.

Disclosure of Invention

The invention solves the technical problem of providing an explosion-proof weighing chamber which can form negative pressure in the weighing chamber and avoid dust or reagent from leaking, thereby avoiding the high-cleanliness environment of a working area outside the weighing chamber from being polluted, improving the safety of the working environment and improving the explosion-proof performance and the protection level.

In order to solve the above technical problems, the present invention provides an explosion-proof weighing chamber comprising: the air conditioner comprises a main body, wherein an operation room, a first installation cavity and a second installation cavity are arranged in the main body, the second installation cavity is of an inverted L shape, the operation room and the first installation cavity are both positioned below the second installation cavity, two return air pore plates are arranged on one side, close to each other, of the operation room and the first installation cavity, a primary filter and a secondary filter are installed in the first installation cavity, the primary filter is matched with the two return air pore plates, an explosion-proof fan is fixedly installed on the inner wall of the bottom of the second installation cavity, an explosion-proof control electric box is installed on the inner wall of one side, close to the operation room, of the second installation cavity in an embedded mode, an installation box is fixedly installed in the second installation cavity, the installation box is connected with an air outlet of the explosion-proof fan through a pipeline, and an air exhaust efficient filter is fixedly installed on one side of the installation box, the utility model discloses a high efficiency air exhaust device, including the main part, be equipped with the orifice plate of airing exhaust in the main part, the mounted position of high efficiency air exhaust filter with the orifice plate looks adaptation of airing exhaust, the bottom fixed mounting of install bin has the high efficiency air supply filter, the top inner wall of control chamber with be equipped with the homoflow membrane between the second installation cavity, fixed mounting has explosion-proof LED lamp on the top inner wall of control chamber, the control chamber is close to be equipped with two explosion-proof sockets on the inner wall of one side of first installation cavity, be equipped with three differential pressure table on the explosion-proof control electronic box, just install explosion-proof speed governing electronic box on the explosion-proof control electronic box.

Preferably, the explosion-proof speed regulation electronic box is provided with a power indicator lamp, a power starting button, a power stopping button, a working indicator lamp, an illumination switch button, an emergency stop button and a speed regulator.

Preferably, the box of explosion-proof control electronic box adopts the corrosion resistant plate welding to form, and sets up four through wires holes in the bottom, joins in marriage explosion-proof joint (G internal thread), and supporting G explosion-proof pipe uses, and the bottom plate is joined in marriage to inside, and is the insulation board, the last handle of installing of explosion-proof control electronic box.

Preferably, the box of explosion-proof speed governing electronic box adopts aluminum alloy die-casting shaping, and surperficial high-pressure static spraying plastics, a through wires hole is seted up at the top, joins in marriage explosion-proof joint (G internal thread), and supporting G explosion-proof pipe uses, and the inside bottom plate that joins in marriage, and is the insulation board, explosion-proof speed governing electronic box adopts the screw fixation.

Preferably, the main body is formed by bending a SUS304# sanded stainless steel plate with the thickness of 1.2 mm.

Compared with the related art, the explosion-proof weighing chamber provided by the invention has the following beneficial effects:

the invention provides an explosion-proof weighing chamber:

through the matching of the main body, the operation room, the first installation cavity, the second installation cavity, the primary filter, the intermediate filter, the explosion-proof fan, the explosion-proof control electric box, the installation box, the high-efficiency air exhaust filter, the air exhaust pore plate, the high-efficiency air supply filter, the explosion-proof LED lamp, the flow equalizing membrane, the air return pore plate, the explosion-proof socket, the pressure difference meter and the explosion-proof speed regulation electric box, when dust or reagents are weighed and subpackaged in the operation room, negative pressure can be formed in the operation room, the dust or the reagents are prevented from leaking, the high-cleanliness environment of a working area outside the weighing room is prevented from being polluted, the suction harm of the dust or the reagents brought by workers outside the weighing room is reduced, and the safety of the working environment is improved; and through this explosion-proof equipment of weighing room, can improve the explosion-proof performance of weighing room, improve protection level.

Drawings

FIG. 1 is a side cross-sectional structural view of a first embodiment of an explosion-proof weighing chamber provided in the present invention;

FIG. 2 is a schematic front view of the present invention;

FIG. 3 is a schematic perspective view of the present invention;

FIG. 4 is a schematic front view of the explosion-proof control box of the present invention;

FIG. 5 is a schematic side view of the explosion-proof control electrical box of the present invention;

FIG. 6 is a schematic perspective view of the explosion-proof speed-regulating electrical box of the present invention;

FIG. 7 is a schematic front view of a second embodiment of the explosion-proof weighing chamber provided in the present invention;

FIG. 8 is an enlarged schematic view of portion A shown in FIG. 7;

fig. 9 is an enlarged structural view of a portion B shown in fig. 7;

FIG. 10 is a first side cross-sectional view of a portion of the cleaning mechanism of FIG. 7;

FIG. 11 is a second side cross-sectional view of a portion of the cleaning mechanism of FIG. 7.

Reference numbers in the figures: 1. a main body; 2. an operation chamber; 3. a first mounting chamber; 4. a second mounting chamber; 5. a primary filter; 6. a medium-efficiency filter; 7. an explosion-proof fan; 8. an explosion-proof control electrical box; 9. installing a box; 10. an efficient exhaust filter; 11. an air exhaust orifice plate; 12. an air supply high-efficiency filter; 13. an explosion-proof LED lamp; 14. flow equalizing membrane; 15. an air return pore plate; 16. an explosion-proof socket; 17. a differential pressure gauge; 18. an explosion-proof speed-regulating electronic box; 1801. a power indicator light; 1802. a power supply start button; 1803. a power stop button; 1804. a work indicator light; 1805. an illumination switch button; 1806. an emergency stop button; 1807. a speed regulator; 19. an explosion-proof double-shaft motor; 20. a connecting shaft; 21. an air suction hood; 22. a roller brush; 23. a middle shaft; 24. explosion-proof cleaning motor; 25. a first bevel gear; 26. a second bevel gear; 27. connecting blocks; 28. mounting blocks; 29. a threaded rod; 30. a moving block; 31. a limiting rod; 32. a hose; 33. a third bevel gear; 34. a fourth bevel gear.

Detailed Description

The invention is further described with reference to the following figures and embodiments.

The first embodiment:

referring to fig. 1 to 6 in combination, the explosion-proof weighing chamber includes: the main body 1, be equipped with control chamber 2, first installation cavity 3 and second installation cavity 4 in the main body 1, second installation cavity 4 is the type of falling L, control chamber 2 with first installation cavity 3 all is located the below of second installation cavity 4, one side that control chamber 2 and first installation cavity 3 are close to each other is equipped with two return air orifice plates 15, install primary filter 5 and neutral filter 6 in the first installation cavity 3, primary filter 5 and two return air orifice plates 15 looks adaptation, fixed mounting has explosion-proof fan 7 on the bottom inner wall of second installation cavity 4, embedding is installed explosion-proof control electronic box 8 on the inner wall of one side that second installation cavity 4 is close to control chamber 2, fixed mounting has install the install bin 9 in the second installation cavity 4, install bin 9 with explosion-proof fan 7's air outlet passes through the tube coupling, one side fixed mounting of install bin 9 has exhaust high efficiency filter 10, be equipped with exhaust orifice plate 11 on main part 1, exhaust high efficiency filter 10's mounted position with exhaust orifice plate 11 looks adaptation, the bottom fixed mounting of install bin 9 has air supply high efficiency filter 12, the top inner wall of control room 2 with be equipped with flow equalizing membrane 14 between the second installation cavity 4, fixed mounting has explosion-proof LED lamp 13 on the top inner wall of control room 2, control room 2 is close to be equipped with two explosion-proof sockets 16 on one side inner wall of first installation cavity 3, be equipped with three differential pressure table 17 on the explosion-proof control electronic box 8, just install explosion-proof speed governing electronic box 18 on the explosion-proof control electronic box 8.

Be equipped with power indicator 1801, power start button 1802, power stop button 1803, work pilot lamp 1804, lighting switch button 1805, scram button 1806 and speed regulator 1807 on the explosion-proof speed governing electronic box 18, through explosion-proof speed governing electronic box 18, can conveniently control explosion-proof fan 7 and explosion-proof LED lamp 13 in control room 2.

The box of explosion-proof control electronic box 8 adopts 304 corrosion resistant plate welding to form, and sets up four through wires holes in the bottom, joins in marriage explosion-proof joint (G1 internal thread), and supporting G1 explosion-proof pipe uses, and the bottom plate is joined in marriage to inside, and is the insulation board, install the handle on the explosion-proof control electronic box 8.

The box of explosion-proof speed governing electronic box 18 adopts aluminum alloy die-casting shaping, and surperficial high-pressure static spraying plastics, a through wires hole is seted up at the top, joins in marriage explosion-proof joint (G1 internal thread), and supporting G1 explosion-proof pipe uses, and inside joins in marriage the bottom plate, and is the insulation board, explosion-proof speed governing electronic box 18 adopts the screw fixation.

The main body 1 is formed by bending a SUS304# sanding stainless steel plate with the thickness of 1.2mm, and the protection grade of the weighing room can be improved.

In this embodiment:

the explosion-proof fan 7, the explosion-proof control electric box 8, the explosion-proof LED lamp 13, the explosion-proof socket 16 and the explosion-proof speed regulation electric box 18 are used, so that electric sparks can be effectively avoided, the risk of explosion of dust floating in the air is reduced, and the explosion-proof performance of the weighing room is improved;

when in use, the explosion-proof fan 7 is started, air in the operation room 2 enters the first mounting chamber 3 through the two return air pore plates 15, the dust is filtered by the primary filter 5 and the middle-effect filter 6, then the explosion-proof fan 7 is sucked and enters the mounting box 9 through a pipeline, then a part of air is filtered again by the exhaust high-efficiency filter 10, the part of filtered clean air is discharged to the outside of the main body 1 through the exhaust pore plate 11, namely, the clean air is discharged to the outside of the weighing room, the other part of air is filtered by the air supply high-efficiency filter 12, the filtered clean air is uniformly sent back to the operation room 2 through the flow equalizing membrane 14, and because a part of air is discharged to the outside of the weighing room, negative pressure is formed in the operation room 2, so that when the dust or reagent is weighed in the operation room 2, the dust or reagent cannot leak out, therefore, the high-cleanliness environment of the working area outside the weighing chamber is prevented from being polluted, the suction hazard of dust or reagents brought by the workers outside the weighing chamber is reduced, and the safety of the working environment is improved.

Compared with the related art, the explosion-proof weighing chamber provided by the invention has the following beneficial effects:

the invention provides an explosion-proof weighing room, which is characterized in that a main body 1, an operation room 2, a first installation chamber 3, a second installation chamber 4, a primary filter 5, a secondary filter 6, an explosion-proof fan 7, an explosion-proof control electric box 8, an installation box 9, an air exhaust high-efficiency filter 10, an air exhaust pore plate 11, an air supply high-efficiency filter 12, an explosion-proof LED lamp 13, a flow equalizing membrane 14, an air return pore plate 15, an explosion-proof socket 16, a pressure difference meter 17 and an explosion-proof speed regulation electric box 18 are matched, so that negative pressure can be formed in the operation room 2 when dust or reagents are weighed and subpackaged in the operation room 2, and the dust or reagents are prevented from leaking out, thereby preventing the high-cleanliness environment of a working area outside the weighing room from being polluted, reducing the suction hazard of the dust or reagents brought by workers outside the weighing room, and improving the safety of the working environment; and through this explosion-proof equipment of weighing room, can improve the explosion-proof performance of weighing room, improve protection level.

Second embodiment:

based on the explosion-proof weighing chamber provided in the first embodiment of the present application, a second embodiment of the present application proposes another explosion-proof weighing chamber. The second embodiment is merely a preferred way of the first embodiment, and the implementation of the second embodiment does not affect the implementation of the first embodiment alone.

The second embodiment of the present invention will be further described with reference to the drawings and the following description.

Referring to fig. 7-11 in combination, the explosion-proof weighing room further includes two cleaning mechanisms, each of the cleaning mechanisms includes an explosion-proof double-shaft motor 19, two connecting shafts 20, an air suction hood 21, a roller brush 22, two middle shafts 23, an explosion-proof cleaning motor 24, a first bevel gear 25, a second bevel gear 26, two connecting blocks 27 and two transmission mechanisms, the explosion-proof double-shaft motor 19 is fixedly installed at one side of the air return hole plate 15 close to the operation room 2, the explosion-proof double-shaft motor 19 is installed right above the air return hole on the air return hole plate 15, the two connecting shafts 20 are respectively fixedly installed on two output shafts of the explosion-proof double-shaft motor 19, the air suction hood 21 is installed right below the two connecting shafts 20, the roller brush 22 is installed in the air suction hood 21, and the two middle shafts 23 are respectively fixedly installed at two ends of the roller brush 22, explosion-proof clearance motor 24 fixed mounting is in the top of the cover 21 that induced drafts, just explosion-proof clearance motor 24's output shaft extends to in the cover 21 that induced drafts, first conical gear 25 fixed mounting be in on explosion-proof clearance motor 24's the output shaft, just the fixed cover of second conical gear 26 is established correspondingly epaxial 23 is last, just second conical gear 26 with first conical gear 25 meshes mutually, two connecting block 27 fixed mounting respectively is in the both sides of the cover 21 that induced drafts, two drive mechanism all locates on the return air orifice plate 15, and two drive mechanism symmetry is located the both sides in the return air orifice plate 15 last return air hole.

The transmission mechanism comprises two mounting blocks 28, a threaded rod 29, a moving block 30, a limiting rod 31, a third bevel gear 33 and a fourth bevel gear 34, the two mounting blocks 28 are fixedly mounted on the return air pore plate 15, the threaded rod 29 is rotatably mounted on the two mounting blocks 28, the moving block 30 is sleeved on the threaded rod 29 in a threaded manner, the limiting rod 31 is fixedly mounted on the two mounting blocks 28, the moving block 30 is slidably connected with the limiting rod 31, the third bevel gear 33 is fixedly mounted at one end, far away from the explosion-proof double-shaft motor 19, of the corresponding connecting shaft 20, the fourth bevel gear 34 is fixedly mounted at the top end of the threaded rod 29, and the fourth bevel gear 34 is meshed with the third bevel gear 33.

The tail end of the air suction hood 21 is fixedly connected with a hose 32.

In this embodiment:

the two air return pore plates 15 are used as air inlet inlets, and in the long-term use of the weighing chamber, more dust can be collected on the two air return pore plates 15, which not only can influence the air inlet, but also can influence the service life of each filter, and if the weighing chamber is cleaned manually at regular intervals, the dust can be blown up to pollute the weighing chamber;

at the moment, the hoses 32 in the two cleaning mechanisms are connected with the air inlet pipes of the external explosion-proof type dust collectors, the hoses 32 are long enough, the explosion-proof cleaning motors 24 are started, the corresponding middle shafts 23 are driven to rotate through the first conical gears 25 and the second conical gears 26, the middle shafts 23 drive the roller brushes 22 to rotate, dust on the air return holes is cleaned, the dust is sucked from the air suction cover 21 through the external explosion-proof dust collectors, and the dust is prevented from floating in the air;

the explosion-proof double-shaft motor 19 is started simultaneously to drive the two connecting shafts 20 to rotate, the two threaded rods 29 are driven to rotate through the two third bevel gears 33 and the two fourth bevel gears 34, the two threaded rods 29 drive the two moving blocks 30 to move downwards at the limiting rods 31, and the two connecting blocks 27 and the two middle shafts 23 drive the air suction cover 21 and the roller brushes 22 to move downwards, so that the two air return hole plates 15 are cleaned comprehensively.

Compared with the related art, the explosion-proof weighing chamber provided by the invention has the following beneficial effects:

the invention provides an explosion-proof weighing room, which is characterized in that an explosion-proof double-shaft motor 19, a connecting shaft 20, an air suction cover 21, a roller brush 22, a middle shaft 23, an explosion-proof cleaning motor 24, a first bevel gear 25, a second bevel gear 26, a connecting block 27, an installation block 28, a threaded rod 29, a moving block 30, a limiting rod 31, a hose 32, a third bevel gear 33 and a fourth bevel gear 34 are matched, when more dust is gathered on two air return pore plates 15 in the long-term use of the weighing room, the dust on the air return pore plates 15 can be automatically cleaned and collected, the dust is prevented from floating in the air, the weighing room is prevented from being polluted, and the service life of a filter is prolonged.

It should be noted that the device structure and the accompanying drawings of the present invention mainly describe the principle of the present invention, and in the technology of the design principle, the settings of the power mechanism, the power supply system, the control system, and the like of the device are not completely described, but on the premise that those skilled in the art understand the principle of the present invention, the details of the power mechanism, the power supply system, and the control system can be clearly known;

furthermore, the terms "first", "second" and "first" 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, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless explicitly specified otherwise;

in addition, in the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," "fixed," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; may be mechanically coupled, may be electrically coupled or may be in communication with each other; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations;

in the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.

The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes, which are made by using the contents of the present specification and the accompanying drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.