Safety protection device for chemical production and processing

Abstract

The utility model discloses a safety protection device for chemical production and processing, and belongs to the technical field of gas masks, the safety protection device comprises a mask, a breathing hole is formed in the mask, a filter cartridge is detachably arranged at the breathing hole, a cartridge cover and a bottom plate are detachably arranged at the two ends of the filter cartridge respectively, and the bottom plate is located in the breathing hole; a pressing plate is slidably arranged in the filter cylinder, and ventilation holes are formed in the surfaces of the pressing plate, the barrel cover and the bottom plate. According to the safety protection device for chemical industry production and processing, a spring is matched with a pressing plate to extrude and fix a filtering assembly, meanwhile, a bottom plate and a barrel cover are detachably connected, so that the convenience of replacing the filtering assembly is improved, and compared with an existing device, the situation that a filtering layer possibly deforms and shakes after being used for a period of time is avoided; the service life of the device is prolonged, and the replacement convenience of the device is improved.

Description

Technical Field

[0001] The present application belongs to the technical field of gas masks, and in particular to a safety protection device for chemical production and processing. Background Art

[0002] A gas mask is a personal labor protection product and also a single-soldier protective product. It is worn on the head to protect a person's respiratory organs, eyes and face, and to prevent harm from toxic substances such as poisonous gases, dust, bacteria, toxic and harmful gases or steam.

[0003] The existing safety protection devices for chemical production and processing need to replace the filter layer after being used for a period of time. In actual use, the filter layer may deform and shake after being used for a period of time, affecting the filtering effect and replacement efficiency.

[0004] To this end, we propose a safety protection device for chemical production and processing to solve the above problems. Utility Model Content

[0005] The purpose of the present application is to solve the problem in the prior art that the filter layer may deform and shake after being used for a period of time, and to propose a safety protection device for chemical production and processing.

[0006] In order to achieve the above purpose, this application adopts the following technical solutions:

[0007] A safety protection device for chemical production and processing, comprising a mask, a breathing hole is provided on the mask, and a filter cartridge is detachably provided at the breathing hole, a cartridge cover and a bottom plate are detachably provided at both ends of the filter cartridge, and the bottom plate is located in the breathing hole, a pressure plate is slidably provided in the filter cartridge, ventilation holes are provided on the surfaces of the pressure plate, the cartridge cover and the bottom plate, a filter assembly is provided between the pressure plate and the bottom plate, a spring in a compressed state is provided between the pressure plate and the cartridge cover, an L-shaped pull rod is fixedly connected to one side of the pressure plate facing the spring, a through groove is provided on the side wall of the filter cartridge for the pull rod to pass through and move, and a limit assembly located between the cartridge cover and the pull rod is provided on one side of the through groove.

[0008] Preferably, the filter assembly includes a base layer, a pre-filtration layer is hot-pressed on one side of the base layer facing the pressure plate, and an activated carbon layer is fixedly bonded on the other side, a HEPA layer is fixedly bonded on the side of the activated carbon layer facing the bottom plate, and a chemical adsorption layer is fixedly bonded on the side of the HEPA layer facing the bottom plate.

[0009] Preferably, the pre-filtration layer is made of polypropylene fibers and has a thickness of 2-4 mm.

[0010] Preferably, the activated carbon layer is made of activated carbon fiber cloth and has a thickness of 6-8 mm.

[0011] Preferably, the HEPA layer is made of high efficiency particulate air filter paper and has a thickness of 4-6 mm.

[0012] Preferably, the chemical adsorption layer is made of activated carbon impregnated with potassium bromide and has a thickness of 4-8 mm.

[0013] Preferably, the limiting assembly comprises columns fixedly arranged on both sides of the through slot, wherein a limiting rod is hingedly connected to the end of one of the columns, and the other end of the limiting rod is magnetically connected to the other column.

[0014] Preferably, the distance between one end of the through slot away from the cylinder cover and the pull rod is smaller than the distance between one end of the L-shaped rod facing the cylinder cover and one end of the pressing plate facing away from the cylinder cover.

[0015] Preferably, a plurality of connection blocks are fixedly connected in a circular array around the bottom plate, and an L-shaped groove for the connection blocks to enter is provided on the filter cartridge.

[0016] To sum up, the technical effects and advantages of the present application are as follows: compared with existing devices, the safety protection device for chemical production and processing realizes the extrusion and fixation of the filter component through a spring and a pressure plate. At the same time, the detachable connection between the bottom plate and the cylinder cover improves the convenience of replacing the filter component. Compared with existing devices, it avoids the problem that the filter layer may be deformed and shaken after a period of use, affecting the filtering effect and replacement efficiency, thereby improving the service life and replacement convenience of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a front view of the structure of the utility model;

[0018] Figure 2 This is a top view of the structure of the utility model;

[0019] Figure 3 It is a cross-sectional view of the filter cartridge structure;

[0020] Figure 4 for Figure 1 Enlarged view of point A in the middle;

[0021] Figure 5 This is a schematic diagram of the structure at the connection block.

[0022] In the figure: 1. mask; 2. breathing hole; 3. filter cartridge; 4. cartridge cover; 5. bottom plate; 6. pressure plate; 7. ventilation hole; 8. filter assembly; 9. spring; 10. pull rod; 11. through groove; 12. base layer; 13. pre-filter layer; 14. activated carbon layer; 15. HEPA layer; 16. chemical adsorption layer; 17. column; 18. connecting block; 19. L-shaped groove. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all of the embodiments.

[0024] Reference Figure 1-3 A safety protection device for chemical production and processing, comprising a mask 1, a breathing hole 2 is opened on the mask 1, and a filter cartridge 3 is detachably provided at the breathing hole 2, a cartridge cover 4 and a bottom plate 5 are detachably provided at both ends of the filter cartridge 3, and the bottom plate 5 is located in the breathing hole 2, a pressing plate 6 is slidably provided in the filter cartridge 3, and ventilation holes 7 are opened on the surfaces of the pressing plate 6, the barrel cover, and the bottom plate 5, a filter assembly 8 is provided between the pressing plate 6 and the bottom plate 5, a spring 9 in a compressed state is provided between the pressing plate 6 and the cartridge cover 4, and an L-shaped A pull rod 10 is provided, and a through groove 11 is provided on the side wall of the filter cartridge 3 for the pull rod 10 to pass through and move. A limiting component is provided on one side of the through groove 11 and is located between the barrel cover and the pull rod 10. The filter assembly 8 is squeezed and fixed by a spring 9 and a pressure plate 6. At the same time, the detachable connection between the bottom plate 5 and the barrel cover 4 improves the convenience of replacing the filter assembly 8. Compared with the existing device, it avoids the problem that the filter layer may be deformed and shaken after a period of use, which affects the filtering effect and replacement efficiency, and improves the service life and replacement convenience of the device.

[0025] Reference Figure 3 The filter component 8 includes a base layer 12, which is made of a polyester fiber mesh and provides structural support to maintain the shape and stability of the filter component 8 and ensure that the subsequent filter layer does not deform. A pre-filter layer 13 is hot-pressed on one side of the base layer 12 facing the pressing plate 6, and an activated carbon layer 14 is fixedly bonded on the other side. A HEPA layer 15 is fixedly bonded on one side of the activated carbon layer 14 facing the bottom plate 5, and a chemical adsorption layer 16 is fixedly bonded on one side of the HEPA layer 15 facing the bottom plate 5.

[0026] Preferably, the pre-filter layer 13 is made of polypropylene fibers and has a thickness of 2-4 mm, so as to capture larger particles and extend the life of subsequent filter layers.

[0027] Preferably, the activated carbon layer 14 is made of activated carbon fiber cloth with a thickness of 6-8 mm to absorb organic gas and odor.

[0028] Preferably, the HEPA layer 15 is made of high efficiency particulate air filter paper with a thickness of 4-6 mm to filter very fine particles.

[0029] Preferably, the chemical adsorption layer 16 is made of activated carbon impregnated with potassium bromide and has a thickness of 4-8 mm, so as to adsorb and neutralize the acidic gas.

[0030] Reference Figure 4The limit assembly includes columns 17 fixed on both sides of the through slot 11, one end of which is hingedly connected to a limit rod, and the other end of the limit rod is magnetically connected to the other column 17, so as to limit the pressure plate 6 during normal use. When replacement and disassembly are required, it is only necessary to rotate the limit rod. The distance between the end of the through slot 11 away from the cylinder cover 4 and the pull rod 10 is smaller than the distance between the end of the L-shaped rod facing the cylinder cover 4 and the end of the pressure plate 6 facing away from the cylinder cover 4, so as to avoid the air bypassing the pressure plate 6 from the through slot 11 and directly entering the filter assembly 8 during normal use, thereby improving the filtering effect.

[0031] Reference Figure 5 A plurality of connecting blocks 18 are fixedly connected in a circular array around the bottom plate 5, and an L-shaped groove 19 for the connecting block 18 to enter is opened on the filter cartridge 3. The L-shaped groove 19 cooperates with the connecting block 18 and the spring 9 to realize a quick and detachable connection to the bottom plate 5.

[0032] Working principle:

[0033] When the safety protection device for chemical production and processing is used, air passes through the pre-filter layer 13, and the polypropylene fiber captures larger particles such as dust and dirt, thereby extending the life of the subsequent filter layer. The air then passes through the activated carbon layer 14, and the high-performance activated carbon particles or activated carbon fiber cloth absorb organic gases and odors, such as benzene, formaldehyde and other volatile organic compounds (VOCs). The air then passes through the HEPA layer 15, and the high-efficiency particulate air filter paper filters extremely fine particles, such as PM2.5, PM0.3, etc. Finally, the air passes through the chemical adsorption layer 16, and the activated carbon is impregnated with potassium bromide to absorb and neutralize acidic gases, such as sulfur dioxide SO2, chlorine Cl2, etc. After using for a period of time, the filter cartridge 3 can be screwed out of the breathing hole 2, and then the bottom plate 5 and the barrel cover can be taken out, and then the spring 9 and the pressure plate 6 can be taken out, so as to facilitate the replacement of the filter component 8. After the replacement is completed, the bottom plate 5 is first screwed in and fixed, and then the pressure plate 6 and the spring 9 are placed in turn, and finally the barrel cover is tightened, and the entire use process of the safety protection device for chemical production and processing is completed.

[0034] The above is only a preferred specific implementation manner of the present application, but the protection scope of the present application is not limited thereto. Any technician familiar with the technical field can make equivalent substitutions or changes within the technical scope disclosed in the present application according to the technical solution and utility model concept of the present application, which should be covered by the protection scope of the present application.

Claims

1. A safety protection device for chemical production and processing, comprising a mask (1), characterized in that: The mask (1) is provided with a breathing hole (2), and a filter cartridge (3) is detachably provided at the breathing hole (2). A cartridge cover (4) and a bottom plate (5) are detachably provided at both ends of the filter cartridge (3), and the bottom plate (5) is located at the end of the filter cartridge (3) facing the breathing hole (2). A pressing plate (6) is slidably provided in the filter cartridge (3), and ventilation holes (7) are provided on the surfaces of the pressing plate (6), the cartridge cover, and the bottom plate (5). A filter assembly (8) is provided between the pressing plate (6) and the bottom plate (5), and a spring (9) in a compressed state is provided between the pressing plate (6) and the cartridge cover (4). An L-shaped pull rod (10) is fixedly connected to the side of the pressing plate (6) facing the spring (9). A through groove (11) for the pull rod (10) to pass through and move is provided on the side wall of the filter cartridge (3), and a limiting assembly located between the cartridge cover and the pull rod (10) is provided on one side of the through groove (11).

2. A safety protection device for chemical production and processing according to claim 1, characterized in that: The filter assembly (8) comprises a base layer (12), a pre-filter layer (13) is heat-pressed on one side of the base layer (12) facing the pressing plate (6), and an activated carbon layer (14) is fixedly bonded on the other side, a HEPA layer (15) is fixedly bonded on one side of the activated carbon layer (14) facing the bottom plate (5), and a chemical adsorption layer (16) is fixedly bonded on one side of the HEPA layer (15) facing the bottom plate (5).

3. A safety protection device for chemical production and processing according to claim 2, characterized in that: The pre-filter layer (13) is made of polypropylene fibers and has a thickness of 2-4 mm.

4. A safety protection device for chemical production and processing according to claim 2, characterized in that: The activated carbon layer (14) is made of activated carbon fiber cloth and has a thickness of 6-8 mm.

5. A safety protection device for chemical production and processing according to claim 2, characterized in that: The HEPA layer (15) is made of high efficiency particulate air filter paper and has a thickness of 4-6 mm.

6. A safety protection device for chemical production and processing according to claim 2, characterized in that: The chemical adsorption layer (16) is made of activated carbon impregnated with potassium bromide and has a thickness of 4-8 mm.

7. A safety protection device for chemical production and processing according to claim 1, characterized in that: The limiting assembly comprises columns (17) fixedly arranged on both sides of the through slot (11), wherein a limiting rod is hingedly connected to the end of one of the columns (17), and the other end of the limiting rod is magnetically connected to the other column (17).

8. A safety protection device for chemical production and processing according to claim 7, characterized in that: The distance between the end of the through groove (11) away from the cylinder cover (4) and the pull rod (10) is smaller than the distance between the end of the L-shaped rod facing the cylinder cover (4) and the end of the pressing plate (6) facing away from the cylinder cover (4).

9. A safety protection device for chemical production and processing according to claim 1, characterized in that: A plurality of connection blocks (18) are fixedly connected in a circular array around the bottom plate (5), and an L-shaped groove (19) for the connection blocks (18) to enter is provided on the filter cartridge (3).

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