Gas filtering device for gas detection

Abstract

The utility model discloses a gas filtering device for gas detection, which comprises a main body mechanism, a gas filtering device and a gas filtering device, the sealing mechanism comprises a connecting frame fixedly connected to the outer wall of the air inlet hopper, a sliding groove is formed in the inner wall of the connecting frame, annular frames are hinged to the outer walls of the two sides of the connecting frame, limiting holes are formed in the outer walls of the tops of the annular frames, and telescopic frames are slidably connected to inner cavities of the annular frames; a third spring is fixedly connected to the outer wall of one side of the telescopic frame and the inner wall of the annular frame, an annular shaft is rotatably connected to the inner wall of the first connecting cylinder, filter screens are symmetrically and fixedly connected to the two sides of the outer wall of the circumference of the annular shaft, a mounting groove is formed in the joint of the two filter screens, and a first spring and a cleaning mechanism are fixedly connected to the inner wall of the mounting groove. The problems that when filter sleeves are installed together, gaps are easily formed in the installation positions, unfiltered gas directly makes contact with a gas detection device, and the detection result is affected are solved.

Description

Technical Field

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

[0002] Gas is one of the four basic states of matter. Gas detection technology plays a vital role in modern industry, environmental protection and public safety. It can not only prevent potential dangers and protect people's lives, but also ensure the smooth progress of industrial production. When detecting gas, it is necessary to filter it first to remove impurities, particles and harmful gases from the airflow to protect equipment operation, improve product quality and ensure the safety of the working environment.

[0003] A gas filtering device for TGCM special gas detection with a publication number of CN220736812U is retrieved, comprising a filter cartridge, a cartridge cover being threadedly mounted on one end of the filter cartridge, an air inlet pipe being arranged at the lower end of the cartridge cover, and an air outlet pipe being arranged at the upper end of the filter cartridge; further comprising a filtering mechanism for filtering impurities in the special gas, the filtering mechanism comprising a first filter sleeve, a second filter sleeve and a third filter sleeve which are sequentially clamped in the inner cavity of the filter cartridge; further comprising a fastening mechanism.

[0004] However, when the above device is used, when the filter sleeves are installed together, gaps are easily formed at the installation location, so that unfiltered gas directly contacts the gas detection device, affecting the detection result. Utility Model Content

[0005] The utility model aims to provide a gas filter device for gas detection, so as to solve the problem raised in the above-mentioned background technology that when the filter sleeves are installed together, gaps are easily formed at the installation position, so that the unfiltered gas directly contacts the gas detection device, affecting the detection result.

[0006] In order to solve the above technical problems, the utility model is realized by the following technical solutions:

[0007] The utility model is a gas filtering device for gas detection, comprising:

[0008] A main body mechanism, the main body mechanism comprising an air intake scoop;

[0009] A sealing mechanism comprises a connecting frame fixedly connected to the outer wall of the air intake hopper, a sliding groove is provided on the inner wall of the connecting frame, an annular frame is hingedly connected to the outer walls on both sides of the connecting frame, a limiting hole is provided on the top outer wall of the annular frame, a telescopic frame is slidably connected to the inner cavity of the annular frame, a handle is fixedly connected to the outer wall of the telescopic frame, and a third spring is fixedly connected to the outer wall of one side of the telescopic frame and the inner wall of the annular frame.

[0010] Furthermore, the inner wall of the slide groove is equidistantly threaded with three first connecting cylinders, and the outer wall at the bottom of the first connecting cylinder is fixedly connected with an air outlet hopper;

[0011] Furthermore, the inner wall of the first connecting cylinder is rotatably connected to a ring shaft, and the outer wall of the ring shaft is symmetrically and fixedly connected to filter screens on both sides, and a mounting groove is provided at the connection between the two filter screens, and the inner wall of the mounting groove is fixedly connected to a first spring;

[0012] Furthermore, a corresponding groove is formed on the outer wall of the top of the telescopic frame, a second spring is fixedly connected to the inner wall of the corresponding groove, and a limiting rod corresponding to the limiting hole is fixedly connected to the end of the second spring;

[0013] Furthermore, it also includes a cleaning mechanism, which includes a support tube slidably connected to the top of the annular frame, and a connecting shaft is slidably connected to the inner wall of the support tube;

[0014] Furthermore, the end of the connecting shaft is fixedly connected to a second connecting cylinder, the inner wall of the second connecting cylinder is slidably connected to a telescopic rod, and the outer wall of the end of the telescopic rod is hinged to a cleaning frame;

[0015] Compared with the prior art, the advantages of the present invention are:

[0016] 1. According to the utility model, the handle is manually grasped to drive the telescopic frame to be retracted into the annular frame. The movement of the telescopic frame drives the limit rod to move to contact the inner wall of the annular frame and squeeze the second spring. When the limit rod reaches the position of the limit hole, the second spring rebounds to make the limit rod extend from the limit hole to limit the telescopic frame. The annular frame is opened, and the first connecting tube is installed on the connecting frame along the slide groove. After the annular frame is returned to its original position, the limit rod is manually pressed to slightly move the telescopic frame. When the hand is released, the third spring rebounds to make the telescopic frame pop out, so that the two telescopic frames are in contact with each other to seal the connection of the first connecting tube and reduce gas leakage from the installation position to affect the gas detection result.

[0017] 2. Based on beneficial effect 1, after manually extending the connecting shaft from the supporting cylinder, rotate the connecting shaft so that the second connecting cylinder coincides with the inlet of the air intake hopper, loosen the connecting shaft to allow the second connecting cylinder to extend into the air intake hopper, manually drive the telescopic rod to move up and down to drive the cleaning frame to move up and down, manually drive the supporting cylinder to slide on the annular frame so that the cleaning frame can perform shallow cleaning on the surface of the filter screen, continue to move the telescopic rod downward to drive the cleaning frame to move downward and contact the filter screen, open the two contacting filter screens and stretch the first spring to clean the filter screen on the lower layer, and similarly, the filter screen on the last layer can be cleaned, and after cleaning, retract the telescopic rod to return the cleaning frame to its position, and the spring rebounds to make the corresponding two filter screens return to contact each other, which can facilitate regular cleaning of the filter screen and extend its service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for describing the embodiments are briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0019] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0020] Figure 2 This is a cross-sectional view of the overall structure of the utility model;

[0021] Figure 3 This is a cross-sectional view of the filter structure of the utility model;

[0022] Figure 4 For the utility model Figure 1 A is shown as an enlarged view.

[0023] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0024] 1. Main body; 101. Air inlet hopper; 102. Air outlet hopper; 103. First connecting cylinder; 104. Filter screen; 105. Annular shaft; 106. Mounting groove; 107. First spring; 2. Sealing mechanism; 201. Connecting frame; 202. Slide groove; 203. Annular frame; 204. Limiting hole; 205. Telescopic frame; 206. Corresponding groove; 207. Second spring; 208. Limiting rod; 209. Third spring; 210. Handle; 3. Cleaning mechanism; 301. Support cylinder; 302. Connecting shaft; 303. Second connecting cylinder; 304. Telescopic rod; 305. Cleaning frame. DETAILED DESCRIPTION

[0025] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below with reference to the accompanying drawings.

[0026] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific implementation methods disclosed below.

[0027] In order to make the purpose, technical solution and advantages of the present invention more clear, the implementation mode of the present invention will be further described in detail below with reference to the accompanying drawings.

[0028] In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0029] See also Figure 1-4 As shown, this embodiment is a gas filtering device for gas detection, comprising:

[0030] The main body 1 includes an air intake scoop 101;

[0031] The sealing mechanism 2 includes a connecting frame 201 fixedly connected to the outer wall of the air inlet hopper 101, a sliding groove 202 is provided on the inner wall of the connecting frame 201, an annular frame 203 is hingedly connected to the outer walls on both sides of the connecting frame 201, a limiting hole 204 is provided on the top outer wall of the annular frame 203, a telescopic frame 205 is slidably connected to the inner cavity of the annular frame 203, a handle 210 is fixedly connected to the outer wall of the telescopic frame 205, and a third spring 209 is fixedly connected to the outer wall of one side of the telescopic frame 205 and the inner wall of the annular frame 203;

[0032] The first connecting tube 103 and the annular frame 203 are supported by the connecting frame 201, the first connecting tube 103 is conveniently installed by the sliding groove 202, the telescopic frame 205 is supported by the annular frame 203, the two telescopic frames 205 are brought into contact with each other by the third spring 209 to improve the sealing of the first connecting tube 103, and the telescopic frame 205 is driven to move by the handle 210;

[0033] A corresponding groove 206 is formed on the outer wall of the top of the telescopic frame 205, a second spring 207 is fixedly connected to the inner wall of the corresponding groove 206, and a limiting rod 208 corresponding to the limiting hole 204 is fixedly connected to the end of the second spring 207;

[0034] The second spring 207 is supported by the corresponding groove 206, the limiting rod 208 is extended and retracted by the second spring 207, and the telescopic frame 205 is limited by the limiting rod 208 extending out of the limiting hole 204;

[0035] Working principle: manually hold the handle 210 to drive the telescopic frame 205 into the annular frame 203, the telescopic frame 205 moves to drive the limiting rod 208 to move to contact the inner wall of the annular frame 203 and squeeze the second spring 207, when the limiting rod 208 reaches the position of the limiting hole 204, the second spring 207 rebounds to make the limiting rod 208 extend from the limiting hole 204 to limit the telescopic frame 205, open the annular frame 203, install the first connecting tube 103 on the connecting frame 201 along the sliding groove 202, after the annular frame 203 is returned, manually press the limiting rod 208, slightly move the telescopic frame 205, release the hand, and the third spring 209 rebounds to make the telescopic frame 205 pop out, so that the two telescopic frames 205 contact and seal the connection of the first connecting tube 103;

[0036] This step can reduce the gas leakage from the installation site and affect the gas detection results.

[0037] See also Figure 1-4 As shown, this embodiment is based on the above embodiment 1 and also includes:

[0038] The inner wall of the slide groove 202 is equidistantly threaded with three first connecting cylinders 103, and the outer wall at the bottom of the first connecting cylinder 103 is fixedly connected with the air outlet hopper 102;

[0039] The filter screen 104 is supported by the first connecting tube 103, the gas with detection is allowed to enter the first connecting tube 103 through the gas inlet hopper 101, and the filtered gas is discharged through the gas outlet hopper 102;

[0040] The inner wall of the first connecting cylinder 103 is rotatably connected to an annular shaft 105, and the outer wall of the annular shaft 105 is symmetrically fixedly connected to filter screens 104 on both sides. A mounting groove 106 is provided at the connection between the two filter screens 104, and the inner wall of the mounting groove 106 is fixedly connected to a first spring 107;

[0041] The filter screen 104 can be rotated by the annular shaft 105, and the gas is filtered in multiple layers by the filter screen 104. The first spring 107 is supported by the mounting groove 106, and the filter screen 104 is returned to its original position by the rebound of the first spring 107.

[0042] The cleaning mechanism 3 includes a support tube 301 slidably connected to the top of the annular frame 203, and a connecting shaft 302 is slidably connected to the inner wall of the support tube 301;

[0043] The connecting shaft 302 can be adjusted in height and moved by the support cylinder 301;

[0044] The end of the connecting shaft 302 is fixedly connected with a second connecting cylinder 303, the inner wall of the second connecting cylinder 303 is slidably connected with a telescopic rod 304, and the outer wall of the end of the telescopic rod 304 is hinged with a cleaning frame 305;

[0045] The second connecting cylinder 303 is moved out of the air inlet hopper 101 by rotating the connecting shaft 302 at the highest height, and the second connecting cylinder 303 is driven to move by the moving connecting shaft 302, and the telescopic rod 304 is driven to move and adjust up and down by the second connecting cylinder 303, and the cleaning rack 305 is driven to clean by the telescopic rod 304;

[0046] Working principle: After manually extending the connecting shaft 302 from the supporting cylinder 301, rotate the connecting shaft 302 to make the second connecting cylinder 303 coincide with the inlet of the air inlet bucket 101, loosen the connecting shaft 302 to make the second connecting cylinder 303 extend into the air inlet bucket 101, manually drive the telescopic rod 304 to move up and down to drive the cleaning frame 305 to move up and down, manually drive the supporting cylinder 301 to slide on the annular frame 203 so that the cleaning frame 305 performs shallow cleaning on the surface of the filter screen 104, continue to move the telescopic rod 304 downward to drive the cleaning frame 305 to move downward to contact the filter screen 104, open the two contacting filter screens 104 and stretch the first spring 107, clean the filter screen 104 of the lower layer, and similarly, clean the filter screen 104 of the last layer.

[0047] This step can facilitate regular cleaning of the filter 104 and extend its service life.

[0048] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0049] Finally, it should be noted that the above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A gas filter device for gas detection, characterized in that: include: A main body mechanism (1), the main body mechanism (1) comprising an air intake scoop (101); The sealing mechanism (2) comprises a connecting frame (201) fixedly connected to the outer wall of the air inlet hopper (101), the inner wall of the connecting frame (201) is provided with a sliding groove (202), the outer walls on both sides of the connecting frame (201) are hinged with annular frames (203), the top outer wall of the annular frame (203) is provided with a limiting hole (204), the inner cavity of the annular frame (203) is slidably connected with a telescopic frame (205), the outer wall of the telescopic frame (205) is fixedly connected with a handle (210), and the outer wall of one side of the telescopic frame (205) and the inner wall of the annular frame (203) are fixedly connected with a third spring (209).

2. A gas filter device for gas detection according to claim 1, characterized in that: The inner wall of the slide groove (202) is equidistantly threadedly connected with three first connecting cylinders (103), and the outer wall at the bottom of the first connecting cylinder (103) is fixedly connected with an air outlet hopper (102).

3. A gas filter device for gas detection according to claim 2, characterized in that: The inner wall of the first connecting cylinder (103) is rotatably connected to an annular shaft (105), and filter screens (104) are symmetrically fixedly connected to the outer wall of the annular shaft (105) on both sides. A mounting groove (106) is provided at the connection between the two filter screens (104), and a first spring (107) is fixedly connected to the inner wall of the mounting groove (106).

4. A gas filter device for gas detection according to claim 1, characterized in that: A corresponding groove (206) is provided on the outer wall of the top of the telescopic frame (205), a second spring (207) is fixedly connected to the inner wall of the corresponding groove (206), and a limiting rod (208) corresponding to the limiting hole (204) is fixedly connected to the end of the second spring (207).

5. A gas filter device for gas detection according to claim 1, characterized in that: It also comprises a cleaning mechanism (3), wherein the cleaning mechanism (3) comprises a support tube (301) slidably connected to the top of the annular frame (203), and a connecting shaft (302) is slidably connected to the inner wall of the support tube (301).

6. A gas filter device for gas detection according to claim 5, characterized in that: The end of the connecting shaft (302) is fixedly connected to a second connecting cylinder (303), the inner wall of the second connecting cylinder (303) is slidably connected to a telescopic rod (304), and the outer wall of the end of the telescopic rod (304) is hingedly connected to a cleaning frame (305).

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