Gas detection filter

Abstract

The utility model discloses a gas detection filter, which relates to the technical field of gas detection, and comprises a shell, frames penetrate through the two sides of the outer surface of the shell, dust screens are connected in the two frames, the outer surfaces of the two frames are provided with limiting grooves, and the outer surface of the shell is respectively provided with a torsion spring shaft and a fixing plate. And the torsion spring shaft is sleeved with a limiting strip. Through the arrangement of the frame, the limiting strip, the torsion spring shaft, the limiting groove and the fixing plate, when the dustproof net needs to be replaced, only the limiting strip needs to be rotated to slide out of the limiting groove to finish limiting of the frame, meanwhile, the limiting strip is limited through the fixing plate, and the situation that the torsion spring shaft is damaged due to the fact that the rotation angle of the limiting strip is too large is avoided; then the frame is pulled out of the shell, and then the dustproof net is pulled out of the frame, so that the disassembly work can be completed; and meanwhile, limiting and fastening are achieved, and operation is easy, convenient, fast and time-saving and labor-saving.

Description

Technical Field

[0001] This utility model relates to the field of gas detection technology, specifically a gas detection filter. Background Technology

[0002] Gas detection refers to the measurement of a certain component or its concentration in the air. This is usually done using a corresponding gas sensor and is mainly used for monitoring indoor and atmospheric environments. For example, it can detect the degree of air pollution, detect the concentration of toxic and harmful gases such as carbon monoxide and sulfides in the air, or detect whether there is a leak of processing gas or fuel gas during production and processing. At the same time, in order to prevent dust from entering and clogging the sensor, a filter is usually installed to filter the front end of the gas sensor.

[0003] A gas detection filter with application number 201921434697.8 includes a first filter conduit, a second filter conduit installed at the bottom of the first filter conduit, a fixing plate installed between the first and second filter conduits, a fixing cover plate installed at the top of the first filter conduit, the fixing cover plate being threadedly connected to the top of the first filter conduit, a first connecting gas supply pipe installed at the bottom of the second filter conduit, a second connecting gas supply pipe installed on one side of the first connecting gas supply pipe, and both the first and second connecting gas supply pipes penetratingly connected to the bottom of the second filter conduit; the filter is connected and installed through the first and second filter conduits, and a filter plate within a filter support plate is installed inside the first filter conduit for initial filtration, thereby improving the filtration effect.

[0004] This technical solution uses bolts to fasten the structure for assembly and disassembly. However, the dual filtration method prevents dust from entering, which makes the subsequent filter replacement operation cumbersome, requiring two limit stops and limit changes, which is tedious, time-consuming and labor-intensive. Utility Model Content

[0005] Therefore, the purpose of this utility model is to provide a gas detection filter to solve the technical problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a gas detection filter, comprising a housing, wherein frames are passed through both sides of the outer surface of the housing, and dustproof nets are connected inside the two frames, and limit grooves are formed on the outer surfaces of the two frames, and torsion spring shafts and fixing plates are respectively provided on the outer surface of the housing, and limit strips are sleeved on the outside of the torsion spring shafts.

[0007] By adopting the above technical solution, when the dustproof net needs to be replaced, simply rotate the limiting strip to slide it out of the limiting groove, thus ending the limitation on the frame. At the same time, the fixing plate limits the limiting strip, preventing excessive rotation angle of the limiting strip from damaging the torsion spring shaft. Then, pull the frame out of the shell and the dustproof net out of the frame to complete the disassembly. The simultaneous limitation of both frames facilitates quick disassembly and replacement. After that, put the new dustproof net into the frame, rotate the limiting strip, push the frame into the shell, and then release the limiting strip. The torsion spring shaft drives the limiting strip to rotate into the limiting groove, thus limiting both frames at the same time and preventing the dustproof net from falling off due to the frame falling off.

[0008] Furthermore, the frame is detachably connected to the outer shell, and the dustproof net is detachably connected to the frame.

[0009] By adopting the above technical solution, workers can complete the disassembly work by pulling the frame out of the shell and then pulling the dustproof net out of the frame.

[0010] Furthermore, the two limiting slots are diagonally mirror-distributed.

[0011] By adopting the above technical solution, it is easy to simultaneously end the limiting of the two frames or simultaneously limit the two frames, so as to facilitate quick assembly and disassembly.

[0012] Furthermore, the limiting strip is rotatably connected to the outer shell via a torsion spring shaft, and the limiting strip abuts against two limiting grooves respectively.

[0013] By adopting the above technical solution, the limiting strip is driven to rotate and enter the limiting groove by the torsion spring shaft, thereby limiting the two frames at the same time and preventing the dustproof net from falling off due to the frame falling off.

[0014] Furthermore, a gas sensor is installed on one side of the housing, and pins are fixed on one side of the gas sensor.

[0015] By adopting the above technical solution, the airflow enters the interior of the housing from the left side, then passes through two dust filters in sequence before entering the gas sensor for detection. At the same time, the current and electrical signals of the gas sensor are transmitted through the pins. The two dust filters can effectively filter out impurities in the air and prevent them from entering the gas sensor.

[0016] Furthermore, a control frame extends through one side of the top of the outer casing, and a soft brush is connected to one side of the control frame. A collection box extends through the lower part of the other side of the outer casing, and a partition is fixed inside the collection box.

[0017] By adopting the above technical solution, when the dust screen is clogged, the operator can slide the control frame up and down several times to move the soft brush and clean the dust screen, so that the impurities attached to the surface of the dust screen are swept off. The swept-off impurities fall into the collection box for subsequent unified treatment. At the same time, the internal space of the collection box is divided into two by the partition, and the inclined partition can evenly divide the space of the collection box, preventing the airflow from not contacting the first dust screen but flowing through the internal space of the collection box to contact the second dust screen. Afterwards, the operator only needs to pull out the collection box to empty the impurities in the collection box.

[0018] Furthermore, the collection box is detachably connected to the outer casing.

[0019] By adopting the above technical solution, the swept-down impurities fall into the collection box, and the staff only need to pull out the collection box to empty the impurities inside.

[0020] Furthermore, the partition is inclined.

[0021] By adopting the above technical solution, the internal space of the collection box is divided into two by setting up a partition. The inclined setting of the partition can evenly divide the space of the collection box, preventing the airflow from not contacting the first dustproof net but instead flowing through the internal space of the collection box to contact the second dustproof net.

[0022] Furthermore, the soft brush is slidably connected to the frame and the dustproof net respectively, and the operating frame is slidably connected to the outer shell.

[0023] By adopting the above technical solution, the operator can slide the control frame up and down several times, and drive the soft brush to move through the control frame to clean the dust screen, so that the impurities attached to the surface of the dust screen are swept off.

[0024] In summary, the present invention has the following main advantages:

[0025] This invention, through the design of a frame, limiting strip, torsion spring shaft, limiting groove, and fixing plate, allows for easy replacement of the dustproof net. Simply rotate the limiting strip to slide it out of the limiting groove, thus limiting the frame. Simultaneously, the fixing plate further limits the limiting strip, preventing excessive rotation angle that could damage the torsion spring shaft. Then, pull the frame out of the outer shell and the dustproof net out of the frame to complete the disassembly. The simultaneous limiting of both frames facilitates quick and easy replacement. Afterward, place the new dustproof net into the frame, rotate the limiting strip, push the frame into the outer shell, and then release the limiting strip. The torsion spring shaft drives the limiting strip to rotate into the limiting groove, thus simultaneously limiting both frames and preventing the dustproof net from falling off. This design facilitates quick and easy disassembly and assembly, while simultaneously limiting and securing the dustproof net, making operation simple, convenient, time-saving, and labor-saving. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the structure of this utility model;

[0027] Figure 2 This is a cross-sectional structural diagram of the present invention;

[0028] Figure 3 For the present utility model Figure 2 Enlarged view of the structure at point A in the image;

[0029] Figure 4 This is a schematic diagram of the frame structure of this utility model.

[0030] In the diagram: 1. Housing; 2. Gas sensor; 3. Pin; 4. Frame; 5. Dustproof net; 6. Limiting strip; 7. Torsion spring shaft; 8. Limiting groove; 9. Fixing plate; 10. Control frame; 11. Soft brush; 12. Collection box; 13. Divider. Detailed Implementation

[0031] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0032] The embodiments of this utility model will be described below based on its overall structure.

[0033] Example 1:

[0034] A gas detection filter, such as Figure 1 , Figure 2 and Figure 4 As shown, the device includes an outer shell 1, with frames 4 extending through both sides of the outer surface of the outer shell 1. The frames 4 are detachably connected to the outer shell 1. Dustproof nets 5 are connected inside each of the two frames 4, and the dustproof nets 5 are detachably connected to the frames 4. Limiting grooves 8 are provided on the outer surfaces of the two frames 4, and the two limiting grooves 8 are diagonally mirror-distributed. A torsion spring shaft 7 and a fixing plate 9 are respectively provided on the outer surface of the outer shell 1. A limiting strip 6 is sleeved on the outside of the torsion spring shaft 7. The limiting strip 6 is rotatably connected to the outer shell 1 through the torsion spring shaft 7. The limiting strip 6 abuts against the two limiting grooves 8 respectively. When it is necessary to replace the dustproof net 5, the operator only needs to rotate the limiting strip 6 to make the limiting strip 6 slide out of the limiting groove 8 to end the limiting of the frame 4. At the same time, the fixing plate 9 limits the limiting strip 6 to prevent the limiting strip 6 from rotating too much and causing damage to the torsion spring shaft 7. After that, the operator can pull the frame 4 out of the outer shell 1 and then pull the dustproof net 5 out of the frame 4 to complete the disassembly work.

[0035] See Figure 1 , Figure 2 and Figure 4In the above embodiment, a gas sensor 2 is installed on one side of the housing 1, and a pin 3 is fixed on one side of the gas sensor 2. The airflow enters the housing 1 from the left side, passes through two dustproof nets 5 in sequence, and then enters the gas sensor 2 for detection. At the same time, the current and electrical signal of the gas sensor 2 are transmitted through the pin 3. The two dustproof nets 5 can effectively filter out impurities in the air and prevent impurities from entering the gas sensor 2.

[0036] Example 2:

[0037] Based on the above embodiment 1, in order to facilitate cleaning of the dustproof net 5 and thus reduce the number of times the dustproof net 5 is disassembled and reassembled, the following settings are now implemented.

[0038] See Figures 1-4 In the above embodiment, a control frame 10 extends through one side of the top of the outer shell 1. The control frame 10 is slidably connected to the outer shell 1. A soft brush 11 is connected to one side of the control frame 10. The soft brush 11 is slidably connected to the frame 4 and the dustproof net 5 respectively. The operator can slide the control frame 10 up and down several times. The control frame 10 drives the soft brush 11 to move, thereby cleaning the dustproof net 5 and sweeping off the impurities attached to the surface of the dustproof net 5. A collection box 12 extends through the lower side of the other side of the outer shell 1. The collection box 12 is detachably connected to the outer shell 1. The swept-off impurities fall into the collection box 12. The operator only needs to pull out the collection box 12 to empty the impurities in the collection box 12. A partition 13 is fixed inside the collection box 12. The partition 13 is inclined. The partition 13 divides the internal space of the collection box 12 into two parts. The inclined partition 13 can evenly divide the space of the collection box 12.

[0039] The implementation principle of this utility model is as follows: First, the airflow enters the interior of the outer shell 1 from the left side, then passes through two dustproof nets 5 in sequence before entering the gas sensor 2 for detection. At the same time, the current and electrical signal of the gas sensor 2 are transmitted through the pin 3. The two dustproof nets 5 can effectively filter out impurities in the air and prevent impurities from entering the gas sensor 2.

[0040] When the dust screen 5 is clogged, the operator can slide the control frame 10 up and down several times. The control frame 10 drives the soft brush 11 to move and clean the dust screen 5, so that the impurities attached to the surface of the dust screen 5 are swept off. The swept-off impurities fall into the collection box 12 for subsequent unified processing. At the same time, the partition 13 divides the internal space of the collection box 12 into two parts. The partition 13 is tilted to evenly divide the space of the collection box 12, preventing the airflow from not contacting the first dust screen 5 but flowing through the internal space of the collection box 12 to contact the second dust screen 5. Afterwards, the operator only needs to pull out the collection box 12 to empty the impurities in the collection box 12.

[0041] When the dustproof net 5 needs to be replaced, the worker only needs to rotate the limiting strip 6 to slide out of the limiting groove 8 to stop the frame 4 from falling off. At the same time, the fixing plate 9 limits the limiting strip 6 to prevent the torsion spring shaft 7 from being damaged due to excessive rotation angle. Then, the worker pulls the frame 4 out of the outer shell 1 and then pulls the dustproof net 5 out of the frame 4 to complete the disassembly. After that, the worker puts the new dustproof net 5 into the frame 4. At this time, the worker rotates the limiting strip 6 to avoid affecting the pushing of the frame 4. Then, the worker pushes the frame 4 into the outer shell 1 and then releases the limiting strip 6. At this time, the torsion spring shaft 7 drives the limiting strip 6 to rotate into the limiting groove 8, thereby limiting both frames 4 at the same time and preventing the dustproof net 5 from falling off.

[0042] Although embodiments of the present invention have been shown and described, these specific embodiments are merely explanations of the present invention and are not intended to limit the invention. The specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. After reading this specification, those skilled in the art may make modifications, substitutions, and variations to the embodiments as needed without departing from the principles and spirit of the present invention, provided that such modifications, substitutions, and variations are within the scope of the claims of the present invention and are protected by patent law.

Claims

1. A gas detection filter, comprising a housing (1), characterized in that: The outer surface of the outer shell (1) is permeated by frames (4) on both sides, and dustproof nets (5) are connected inside the two frames (4). Limiting grooves (8) are opened on the outer surface of the two frames (4). Torsion spring shafts (7) and fixing plates (9) are respectively provided on the outer surface of the outer shell (1), and limiting strips (6) are sleeved on the outside of the torsion spring shaft (7).

2. The gas detection filter according to claim 1, characterized in that: The frame (4) is detachably connected to the outer shell (1), and the dustproof net (5) is detachably connected to the frame (4).

3. The gas detection filter according to claim 1, characterized in that: The two limiting slots (8) are diagonally mirrored.

4. The gas detection filter according to claim 3, characterized in that: The limiting strip (6) is rotatably connected to the outer shell (1) via a torsion spring shaft (7), and the limiting strip (6) abuts against the two limiting grooves (8) respectively.

5. The gas detection filter according to claim 1, characterized in that: A gas sensor (2) is installed on one side of the housing (1), and a pin (3) is fixed on one side of the gas sensor (2).

6. The gas detection filter according to claim 1, characterized in that: The top side of the outer shell (1) is connected to a control frame (10), and a soft brush (11) is connected to one side of the control frame (10). The bottom side of the other side of the outer shell (1) is connected to a collection box (12), and a partition (13) is fixed inside the collection box (12).

7. The gas detection filter according to claim 6, characterized in that: The collection box (12) is detachably connected to the outer shell (1).

8. The gas detection filter according to claim 6, characterized in that: The partition (13) is inclined.

9. The gas detection filter according to claim 6, characterized in that: The soft brush (11) is slidably connected to the frame (4) and the dustproof net (5) respectively, and the operating frame (10) is slidably connected to the outer shell (1).

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