Gas filtering device for chemical safety

Abstract

The utility model relates to the technical field of gas filtering devices, in particular to a gas filtering device for chemical safety, which comprises a base, the top of the base is movably clamped with the bottom of a fixing mechanism, and the inner wall of the top of the fixing mechanism is in threaded connection with the outer wall of the bottom of a cover plate mechanism. The outer wall of the cover plate mechanism is movably connected with the inner wall of the filtering mechanism in a clamped mode, the filtering mechanism is composed of a filtering element, a filtering mounting frame and a filtering limiting plate, and a sealing rotary disc rotates to drive a sealing threaded rod to rotate; a rotating sealing threaded rod drives a sealing mounting plate to move downwards through the thread effect and the limiting effect of a fixed sliding groove, the sealing mounting plate moves downwards to drive a filtering mounting frame to move downwards, the filtering mounting frame moves downwards to leave a filtering element, and meanwhile the filtering mounting frame can block and seal an air inlet pipe; poisonous and harmful gas is prevented from leaking out through the fixed barrel body when the filter element is replaced, so that workers and the environment are prevented from being polluted.

Description

Technical Field

[0001] The utility model relates to the technical field of gas filtering devices, in particular to a gas filtering device for chemical safety. Background Art

[0002] Chemical production refers to the process of chemically processing raw materials to obtain valuable products. The chemical production process includes chemical reactions and several physical operations, among which chemical reactions and reactors are the core, and physical processes prepare suitable conditions for chemical reactions and separate and purify reactants to obtain final products. Any technology that uses chemical methods to change the composition and structure of substances or synthesize new substances belongs to chemical production technology, and the resulting products are called chemicals or chemical products. Toxic and harmful gases will be produced during the chemical production process. For chemical safety, toxic and harmful gases need to be filtered.

[0003] At present, when most of the chemical safety gas filtration devices on the market are replacing and maintaining the filter elements, a small amount of toxic and harmful gases will remain inside the air inlet pipe of the filter barrel. The residual gas will leak out when the filter barrel is opened, thereby polluting the workers and the environment. Utility Model Content

[0004] The purpose of the utility model is to provide a gas filter device for chemical safety, so as to solve the problem raised in the above background technology that when the filter element is replaced and maintained, a small amount of toxic and harmful gas will remain inside the air inlet pipe of the filter barrel, and the residual gas will leak out when the filter barrel is opened, thereby polluting the staff and the environment. In order to achieve the above purpose, the utility model provides the following technical solutions: a gas filter device for chemical safety, including a base, the top of the base is movably connected with the bottom of the fixing mechanism, the inner wall of the top of the fixing mechanism is threadedly connected with the outer wall of the bottom of the cover mechanism, the outer wall of the cover mechanism is movably connected with the inner wall of the filter mechanism, and the filter mechanism is composed of a filter element, a filter mounting frame and a filter limit plate;

[0005] The outer wall of the filtering mechanism is slidably connected to the inner wall of the fixing mechanism, the bottom of the filtering mechanism is movably connected to the top of the sealing mechanism, the sealing mechanism includes a sealing mounting plate, a sealing threaded rod and a sealing turntable, and the outer wall of the sealing mechanism is threadedly connected to the inner wall of the base.

[0006] Preferably, the base includes three floor mats, three support columns and a filter barrel bottom, the tops of the three floor mats are movably engaged with the bottoms of the three support columns respectively, and the tops of the three support columns are fixedly connected to the outer wall of the filter barrel bottom, and a threaded through hole is provided at the bottom of the filter barrel bottom.

[0007] Preferably, the fixing mechanism consists of a fixed barrel body, a fixed slide groove, an air inlet pipe and an air outlet pipe, the bottom of the fixed barrel body is fixedly connected to the top of the bottom of the filter barrel, and the inner wall of the fixed barrel body near the bottom is provided with a fixed slide groove, the outer wall of the fixed barrel body near the bottom is provided with an air inlet hole, and the inner wall of the air inlet hole is movably connected to the outer wall of one end of the air inlet pipe, the outer wall of the fixed barrel body near the top is provided with an air outlet hole, and the inner wall of the air outlet hole is movably connected to the outer wall of one end of the air outlet pipe, and the inner wall of the top of the fixed barrel body is provided with an internal thread.

[0008] Preferably, the cover mechanism includes a cover threaded column, a cover body, a cover pull ring and a cover connecting rod, the outer wall of the cover threaded column is threadedly connected to the inner wall of the top of the fixed barrel body through an internal thread, and the top of the cover threaded column is fixedly connected to the bottom of the cover body, the top of the middle part of the cover body is movably engaged with the bottom of the cover pull ring, and the bottom of the middle part of the cover threaded column is fixedly connected to the top of the cover connecting rod.

[0009] Preferably, a mounting hole is provided at the top of the middle part of the filter core, and the inner wall of the mounting hole is movably engaged with the outer wall of the bottom of the cover plate connecting rod, the outer wall of the filter core is movably sleeved with the inner wall of the filter mounting frame, and the outer side wall of the filter mounting frame is fixedly connected to one side of the filter limit plate, and the outer wall of the filter limit plate is slidably connected to the inner wall of the fixed slide groove.

[0010] Preferably, the top of the sealing mounting plate is movably engaged with the bottom of the filter mounting frame, and the bottom of the middle part of the sealing mounting plate is fixedly connected to the top of the sealing threaded rod, the bottom end of the sealing threaded rod is movably engaged with the top of the sealing turntable, and the outer wall of the sealing threaded rod is threadedly connected to the inner wall of the threaded through hole.

[0011] Preferably, the outer wall of the filter core matches the inner wall of the filter mounting frame, and the outer wall of the filter mounting frame matches the inner wall of the fixed barrel.

[0012] Compared with the prior art, the utility model has the following beneficial effects:

[0013] In the utility model, the sealing turntable is rotated, and the sealing threaded rod is driven to rotate. The rotating sealing threaded rod drives the sealing mounting plate to move downward through the action of the thread and the limiting action of the fixed slide groove. The downward movement of the sealing mounting plate drives the filter mounting frame to move downward. The filter mounting frame can move downward to leave the filter element. At the same time, the filter mounting frame can block and seal the air inlet pipe to prevent toxic and harmful gases from leaking through the fixed barrel when the filter element is replaced, thereby avoiding pollution to the staff and the environment.

[0014] In the utility model, the cover pull ring is rotated, and the rotating cover pull ring drives the cover body to rotate, and the rotation of the cover body drives the cover threaded column to rotate. The cover threaded column can be removed from the inside of the fixed barrel body through the action of the thread, and the cover pull ring is pulled upward, and the cover connecting rod is driven to move upward through the cover body and the cover threaded column. After the filter element leaves the filter mounting frame, the cover connecting rod moves upward, driving the filter element upward. The filter element can be taken out from the inside of the fixed barrel body by the upward movement, which is convenient for replacement and maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a cross-sectional view of the utility model;

[0016] Figure 2 It is a schematic diagram of the overall structure of the utility model;

[0017] Figure 3 It is an exploded view of the utility model;

[0018] Figure 4 It is a cross-sectional view of the fixing mechanism in the utility model;

[0019] Figure 5 It is an exploded view of the filtering mechanism and the sealing mechanism in the utility model.

[0020] In the figure: 1. base; 101. floor mat; 102. support column; 103. filter barrel bottom; 2. fixing mechanism; 201. fixed barrel body; 202. fixed slide; 203. air inlet pipe; 204. air outlet pipe; 3. cover mechanism; 301. cover threaded column; 302. cover body; 303. cover pull ring; 304. cover connecting rod; 4. filtering mechanism; 401. filter element; 402. filter mounting frame; 403. filter limit plate; 5. sealing mechanism; 501. sealing mounting plate; 502. sealing threaded rod; 503. sealing turntable. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technical personnel in this field without creative work are within the scope of protection of the utility model.

[0022] See also Figures 1 to 5The utility model provides a technical solution: a gas filter device for chemical safety, comprising a base 1, the top of the base 1 is movably connected with the bottom of a fixing mechanism 2, the inner wall of the top of the fixing mechanism 2 is threadedly connected with the outer wall of the bottom of a cover mechanism 3, the outer wall of the cover mechanism 3 is movably connected with the inner wall of a filter mechanism 4, and the filter mechanism 4 is composed of a filter element 401, a filter mounting frame 402 and a filter limit plate 403;

[0023] The outer wall of the filtering mechanism 4 is slidably connected to the inner wall of the fixing mechanism 2, and the bottom of the filtering mechanism 4 is movably engaged with the top of the sealing mechanism 5. The sealing mechanism 5 includes a sealing mounting plate 501, a sealing threaded rod 502 and a sealing turntable 503. The outer wall of the sealing mechanism 5 is threadedly connected to the inner wall of the base 1.

[0024] In this embodiment, Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 As shown, the base 1 includes three floor mats 101, three support columns 102 and a filter barrel bottom 103. The tops of the three floor mats 101 are movably engaged with the bottoms of the three support columns 102, and the tops of the three support columns 102 are fixedly connected to the outer walls of the filter barrel bottom 103. A threaded through hole is provided at the bottom of the filter barrel bottom 103, and the support columns 102 can keep the device stable during operation.

[0025] In this embodiment, Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 As shown, the fixing mechanism 2 consists of a fixed barrel body 201, a fixed slide 202, an air inlet pipe 203 and an air outlet pipe 204. The bottom of the fixed barrel body 201 is fixedly connected to the top of the filter barrel bottom 103, and the inner wall of the fixed barrel body 201 near the bottom is provided with a fixed slide 202, the outer wall of the fixed barrel body 201 near the bottom is provided with an air inlet hole, and the inner wall of the air inlet hole is movably connected to the outer wall of one end of the air inlet pipe 203, the outer wall of the fixed barrel body 201 near the top is provided with an air outlet hole, and the inner wall of the air outlet hole is movably connected to the outer wall of one end of the air outlet pipe 204, the inner wall of the top of the fixed barrel body 201 is provided with an internal thread, and the gas enters the fixed barrel body 201 through the air inlet pipe 203, and is discharged from the fixed barrel body 201 through the air outlet pipe 204 after filtration.

[0026] In this embodiment, Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5As shown, the cover mechanism 3 includes a cover threaded column 301, a cover body 302, a cover pull ring 303 and a cover connecting rod 304. The outer wall of the cover threaded column 301 is threadedly connected to the inner wall of the top of the fixed barrel body 201 through an internal thread, and the top of the cover threaded column 301 is fixedly connected to the bottom of the cover body 302, the top of the middle part of the cover body 302 is movably engaged with the bottom of the cover pull ring 303, and the bottom of the middle part of the cover threaded column 301 is fixedly connected to the top of the cover connecting rod 304. The cover pull ring 303 is rotated, and the rotating cover pull ring 303 drives the cover body 302 to rotate, and the rotation of the cover body 302 drives the cover threaded column 301 to rotate. The cover threaded column 301 can be disassembled from the inside of the fixed barrel body 201 through the action of the thread, and the cover pull ring 303 is pulled upward to drive the cover connecting rod 304 to move upward through the cover body 302 and the cover threaded column 301.

[0027] In this embodiment, Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 As shown, a mounting hole is provided at the top of the middle part of the filter element 401, and the inner wall of the mounting hole is movably engaged with the outer wall of the bottom of the cover connecting rod 304, the outer wall of the filter element 401 is movably sleeved with the inner wall of the filter mounting frame 402, and the outer side wall of the filter mounting frame 402 is fixedly connected to one side of the filter limit plate 403, the outer wall of the filter limit plate 403 is slidably connected to the inner wall of the fixed slide groove 202, after the filter element 401 leaves the filter mounting frame 402, the cover connecting rod 304 moves upward to drive the filter element 401 to move upward, and the filter element 401 moves upward and can be taken out from the inside of the fixed barrel body 201, which is convenient for replacement and maintenance.

[0028] In this embodiment, Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5As shown, the top of the sealing mounting plate 501 is movably connected to the bottom of the filter mounting frame 402, and the bottom of the middle part of the sealing mounting plate 501 is fixedly connected to the top of the sealing threaded rod 502, the bottom end of the sealing threaded rod 502 is movably connected to the top of the sealing turntable 503, and the outer wall of the sealing threaded rod 502 is threadedly connected to the inner wall of the threaded through hole, the sealing turntable 503 is rotated, and the sealing turntable 503 rotates to drive the sealing threaded rod 502 to rotate, and the rotating sealing threaded rod 502 drives the sealing mounting plate 501 to move downward through the thread action and the limiting action of the fixed slide groove 202, the sealing mounting plate 501 moves downward, and the filter mounting frame 402 moves downward to leave the filter element 401, and the filter mounting frame 402 can block and seal the air inlet pipe 203 to prevent toxic and harmful gases from leaking through the fixed barrel body 201 when the filter element 401 is replaced, causing pollution to the staff and the environment.

[0029] In this embodiment, Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 As shown, the outer wall of the filter element 401 matches the inner wall of the filter mounting frame 402, and the outer wall of the filter mounting frame 402 matches the inner wall of the fixed barrel 201.

[0030] The use method and advantages of the utility model: When the chemical safety gas filter device is working, the working process is as follows:

[0031] like Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5As shown, by rotating the sealing turntable 503, the sealing turntable 503 drives the sealing threaded rod 502 to rotate, and the rotating sealing threaded rod 502 drives the sealing mounting plate 501 to move downward through the thread action and the limiting action of the fixed slide groove 202. The downward movement of the sealing mounting plate 501 drives the filter mounting frame 402 to move downward. The filter mounting frame 402 moves downward to leave the filter element 401. At the same time, the filter mounting frame 402 can block and seal the air inlet pipe 203 to prevent toxic and harmful gases from leaking through the fixed barrel body 201 when replacing the filter element 401, thereby avoiding pollution to the staff and the environment. , rotate the cover pull ring 303, the rotating cover pull ring 303 drives the cover body 302 to rotate, the rotation of the cover body 302 drives the cover threaded column 301 to rotate, the cover threaded column 301 rotates and can be removed from the inside of the fixed barrel body 201 through the action of the thread, pull the cover pull ring 303 upward, and drive the cover connecting rod 304 to move upward through the cover body 302 and the cover threaded column 301. After the filter element 401 leaves the filter mounting frame 402, the cover connecting rod 304 moves upward, driving the filter element 401 to move upward, and the filter element 401 moves upward and can be taken out from the inside of the fixed barrel body 201, which is convenient for replacement and maintenance.

[0032] The above shows and describes the basic principle, main features and advantages of the utility model. Technical staff in this industry should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only preferred examples of the utility model and are not used to limit the utility model. Without departing from the spirit and scope of the utility model, the utility model will have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection of the utility model is defined by the attached claims and their equivalents.

Claims

1. A gas filtering device for chemical safety, comprising a base (1), characterized in that: The top of the base (1) is movably engaged with the bottom of the fixing mechanism (2); the inner wall of the top of the fixing mechanism (2) is threadedly connected with the outer wall of the bottom of the cover mechanism (3); the outer wall of the cover mechanism (3) is movably engaged with the inner wall of the filter mechanism (4); the filter mechanism (4) is composed of a filter element (401), a filter mounting frame (402) and a filter limit plate (403); The outer wall of the filtering mechanism (4) is slidably connected to the inner wall of the fixing mechanism (2); the bottom of the filtering mechanism (4) is movably engaged with the top of the sealing mechanism (5); the sealing mechanism (5) comprises a sealing mounting plate (501), a sealing threaded rod (502) and a sealing rotating disk (503); and the outer wall of the sealing mechanism (5) is threadedly connected to the inner wall of the base (1).

2. A chemical safety gas filtering device according to claim 1, characterized in that: The base (1) comprises three floor mats (101), three support columns (102) and a filter barrel bottom (103); the tops of the three floor mats (101) are respectively movably engaged with the bottoms of the three support columns (102), and the tops of the three support columns (102) are fixedly connected to the outer side wall of the filter barrel bottom (103); and the bottom of the filter barrel bottom (103) is provided with a threaded through hole.

3. A chemical safety gas filtering device according to claim 2, characterized in that: The fixing mechanism (2) is composed of a fixed barrel body (201), a fixed slide groove (202), an air inlet pipe (203) and an air outlet pipe (204); the bottom of the fixed barrel body (201) is fixedly connected to the top of the filter barrel bottom (103), and the inner wall of the fixed barrel body (201) close to the bottom is provided with a fixed slide groove (202); the outer wall of the fixed barrel body (201) close to the bottom is provided with an air inlet through hole, and the inner wall of the air inlet through hole is movably engaged with the outer wall of one end of the air inlet pipe (203); the outer wall of the fixed barrel body (201) close to the top is provided with an air outlet through hole, and the inner wall of the air outlet through hole is movably engaged with the outer wall of one end of the air outlet pipe (204); and the inner wall of the top of the fixed barrel body (201) is provided with an internal thread.

4. A chemical safety gas filtering device according to claim 3, characterized in that: The cover plate mechanism (3) comprises a cover plate threaded column (301), a cover plate body (302), a cover plate pull ring (303) and a cover plate connecting rod (304); the outer wall of the cover plate threaded column (301) is threadedly connected to the inner wall of the top of the fixed barrel body (201) via an internal thread, and the top of the cover plate threaded column (301) is fixedly connected to the bottom of the cover plate body (302); the top of the middle part of the cover plate body (302) is movably engaged with the bottom of the cover plate pull ring (303), and the bottom of the middle part of the cover plate threaded column (301) is fixedly connected to the top of the cover plate connecting rod (304).

5. A chemical safety gas filtering device according to claim 4, characterized in that: A mounting through hole is provided at the top of the middle portion of the filter core (401), and the inner wall of the mounting through hole is movably engaged with the outer wall of the bottom of the cover plate connecting rod (304); the outer wall of the filter core (401) is movably sleeved with the inner wall of the filter mounting frame (402), and the outer wall of the filter mounting frame (402) is fixedly connected to one side of the filter limiting plate (403); the outer wall of the filter limiting plate (403) is slidably connected to the inner wall of the fixed slide groove (202).

6. A chemical safety gas filtering device according to claim 5, characterized in that: The top of the sealing mounting plate (501) is movably engaged with the bottom of the filter mounting frame (402), and the bottom of the middle portion of the sealing mounting plate (501) is fixedly connected to the top of the sealing threaded rod (502), the bottom end of the sealing threaded rod (502) is movably engaged with the top of the sealing rotating disk (503), and the outer wall of the sealing threaded rod (502) is threadedly connected to the inner wall of the threaded through hole.

7. A chemical safety gas filtering device according to claim 5, characterized in that: The outer wall of the filter core (401) matches the inner wall of the filter mounting frame (402), and the outer wall of the filter mounting frame (402) matches the inner wall of the fixed barrel body (201).

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