Anti-interference type gas alarm device

Abstract

The application belongs to the technical field of gas safety and protection equipment, in particular to an anti-interference type gas alarm device, which comprises a gas alarm, a connector connected to the gas alarm, a connecting block installed on the bottom surface of the connector, an opening provided on the bottom surface of the connecting block, a methane sensor provided in the connector, a sliding groove provided in the connecting block, and a pair of connecting pipes communicated with the sliding groove. The oil dust can be filtered by the filter screen to prevent the carbon fiber filter and the semi-permeable membrane from being affected. When the electromagnet is started, the electromagnet repels the first magnetic block, and at this time, the sliding plate moves upward under the thrust of the electromagnet. At this time, the gas in the sliding groove can enter the hollow disc from the connecting pipe, and then blow to the filter screen from the gas outlet hole to blow and dredge the filter screen, prevent the filter screen from being blocked, hinder the gas permeation, and affect the detection sensitivity of the methane sensor.

Description

Technical Field

[0001] The present invention belongs to the technical field of gas safety equipment, in particular to an anti-interference type gas alarm device. Background Art

[0002] Existing gas alarm devices use methane detection sensors as the main sensor to generate an alarm. The device has a built-in threshold comparison circuit, which triggers an audible and visual alarm when the methane concentration exceeds a preset value (usually 5%LEL). Some products use temperature compensation algorithms to reduce environmental interference and have a sensor self-test function to ensure reliability.

[0003] A Chinese patent application CN115684537A discloses an anti-interference composite gas alarm for catering kitchens. The key points of its technical solution are: it includes a housing and a sensor module; the sensor module is modified, mainly by adding a ring-shaped PTC heater and optimizing the structural design to overcome the low temperature problem; then a carbon fiber filter and a semi-permeable membrane are added to the structure.

[0004] However, the above technologies often have the following drawbacks: By introducing technologies such as an annular PTC heater, carbon fiber filter, and semipermeable membrane, the low-temperature resistance and anti-interference capabilities of the gas alarm are significantly improved. However, due to the large amount of oil and dust in the kitchen environment, long-term use may cause the carbon fiber filter and semipermeable membrane to become clogged with impurities, hindering gas penetration and affecting the detection sensitivity of the methane sensor. Once the gas cannot effectively reach the sensor element, the alarm's real-time monitoring function will fail, which may delay or miss the report of gas leaks, posing a potential safety hazard. To this end, the present invention provides an anti-interference gas alarm device. Summary of the Invention

[0005] In order to make up for the deficiencies of the prior art, at least one technical problem raised in the background technology is solved.

[0006] The technical solution adopted by the present invention to solve its technical problem is: the anti-interference gas alarm device described in the present invention includes a gas alarm; the gas alarm is connected to the gas alarm, the bottom surface of the connector is installed with a connecting block, the bottom surface of the connecting block is opened, and a methane sensor is arranged in the connector; a slide groove is provided in the connecting block, and a pair of connecting pipes are connected in the slide groove, and the end of the connecting pipe away from the slide groove is connected to a hollow disk, and the bottom surface of the hollow disk is provided with a group of annular air outlet holes; the inner wall of the slide groove is sealed and slidably connected to a slide plate, the bottom surface of the slide plate is fixedly connected to an electromagnet, and a first magnetic block that repels the electromagnet is provided in the slide groove, and a group of first springs are fixedly connected between the bottom surface of the slide plate and the inner wall of the slide groove; the inner wall of the connecting block is fixedly connected to a connecting frame, and the inner wall of the connecting frame is fixedly connected to a filter screen for filtering smoke and dust.

[0007] A group of second springs corresponding to the air outlet holes are slidably connected to the top surface of the inner wall of the hollow disk, and a ball for sealing the air outlet holes is fixedly connected to the bottom surface of the second spring.

[0008] A through hole is provided in the sphere, and the through hole is trumpet-shaped on a side close to the first spring. A pair of elastic ropes are fixedly connected to the inner wall of the through hole, and the other end of the elastic rope is fixedly connected to a sealing ball.

[0009] A movable groove is provided on the inner wall of the connecting frame, and a magnetic plate is slidably connected to the inner wall of the movable groove. A cleaning block is fixedly connected to the side of the magnetic plate away from the movable groove. A group of bristles that fit the filter screen are fixedly connected to the top surface of the cleaning block. A movable component for driving the cleaning block to move is provided on the connecting frame.

[0010] The moving component includes a hollow groove in a connecting frame, the inner wall of the hollow groove is sealed and slidably connected to a second magnetic block that is magnetically attracted to the magnetic plate, the top surface of the connecting frame is provided with a circular hole connected to the hollow groove, and a conduit is connected between the hollow groove and the sliding groove, and the conduit is located on the bottom surface of the slide.

[0011] A storage tank is provided in the cleaning block, in which a cleaning agent for cleaning oil stains is stored. A push plate is slidably connected to the cleaning block to push the cleaning agent. A group of third springs are fixedly connected between the bottom surface of the push plate and the inner wall of the storage tank. A plurality of liquid outlet holes connected to the storage tank are provided on the top surface of the cleaning block, and a control mechanism for controlling the movement of the push plate is provided in the cleaning block.

[0012] The control mechanism includes a group of limit rods slidably connected to the side walls of the cleaning block, the limit rods are used to block the push plate, the limit rods are made of magnetic material, a circular ring is fixedly connected to the surface of the limit rod, and a fourth spring is fixedly connected between the circular ring and the side wall of the cleaning block.

[0013] A partition is fixedly connected to the inner wall of the storage tank, a hollow block is sealed and slidably connected between the partition and the storage tank, a fifth spring is fixedly connected between the hollow block and the inner wall of the storage tank, a liquid inlet groove is provided on the side of the hollow block away from the fifth spring, and a connecting groove corresponding to the liquid outlet hole is provided on the top surface of the hollow block.

[0014] The inner wall of the connecting block is twisted with a sealing plate through a torsion spring. The sealing plate is used to seal the port of the connecting block. A collecting groove is provided in the sealing plate, and a feed groove connected to the collecting groove is provided on the top surface of the sealing plate. A rotating component for controlling the rotation of the sealing plate is provided in the slide groove.

[0015] The rotating assembly includes a first elastic block fixedly connected to the bottom surface of the sealing plate, the first elastic block is arc-shaped and has a hollow structure inside, the end of the first elastic block away from the sealing plate is fixedly connected to the bottom surface of the connecting block, the inner wall of the slide groove is fixedly connected to the second elastic block, the interior of the second elastic block is a hollow structure, the first magnetic block is fixedly connected to the top surface of the inner wall of the second elastic block, a sixth spring is fixedly connected between the bottom surface of the first magnetic block and the inner wall of the elastic block, a ventilation groove connected to the second elastic block is opened in the connecting block, and the bottom end of the ventilation groove is connected to the second elastic block.

[0016] The beneficial effects of the present invention are as follows:

[0017] 1. The present invention can filter oil dust through the filter to prevent it from affecting the carbon fiber filter and the semipermeable membrane. By starting the electromagnet, the electromagnet will repel the first magnetic block when it is turned on. At this time, the slide will move upward under the thrust of the electromagnet. At this time, the gas in the chute can enter the hollow disk from the connecting pipe, and then be blown onto the filter from the air outlet to blow and dredge the filter, preventing the filter from being blocked, hindering gas penetration, and affecting the detection sensitivity of the methane sensor.

[0018] 2. When the slide moves upward, the present invention pushes the gas in the chute, causing the gas to enter the hollow disk from the connecting pipe. At this time, the gas pushes the ball, causing the ball to move downward, thereby causing the ball to hit the filter, causing the filter to shake, so that impurities on the filter can be shaken and fall off, thereby improving the self-cleaning effect of the filter. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The present invention will be further described below with reference to the accompanying drawings.

[0020] Figure 1 It is a three-dimensional diagram of the gas alarm of the present invention;

[0021] Figure 2 It is a schematic diagram of the internal structure of the connecting block in the present invention;

[0022] Figure 3 yes Figure 2 A magnified view of point A;

[0023] Figure 4 is a cross-sectional view of the hollow disk and the sphere in the present invention;

[0024] Figure 5 It is a partial structural cross-sectional view of the connection frame in the present invention;

[0025] Figure 6 It is a partial structural cross-sectional view of the connecting block in the present invention;

[0026] Figure 7 In the present invention Figure 6 Enlarged view of point B.

[0027] In the figure: 1. gas alarm; 2. connector; 3. connecting block; 4. connecting frame; 5. filter screen; 6. hollow disk; 7. slide; 8. slide plate; 9. electromagnet; 10. first magnetic block; 11. connecting pipe; 12. air outlet; 13. ball; 14. through hole; 15. sealing ball; 16. elastic rope; 17. cleaning block; 18. bristles; 19. magnetic plate; 20. moving groove; 21. second magnetic block; 22. hollow groove; 23. conduit; 24. storage tank; 25. liquid outlet; 26. push plate; 27. hollow block; 28. connecting groove; 29. ​​liquid inlet tank; 30. ring; 31. limiting rod; 32. sealing plate; 33. collecting tank; 34. feeding tank; 35. first elastic block; 36. ventilation groove; 37. second elastic block. DETAILED DESCRIPTION

[0028] In order to make the technical means, creative features, objectives and effects achieved by the present invention easier to understand, the present invention is further described below in conjunction with specific implementation methods.

[0029] Example 1: Figures 1 to 5 As shown, an anti-interference gas alarm device described in an embodiment of the present invention includes a gas alarm 1; the gas alarm 1 is connected to a connector 2, a connecting block 3 is installed on the bottom surface of the connector 2, the bottom surface of the connecting block 3 is opened, and a methane sensor is arranged in the connector 2; a slide groove 7 is provided in the connecting block 3, a pair of connecting pipes 11 are connected in the slide groove 7, and the end of the connecting pipe 11 away from the slide groove 7 is connected to a hollow disk 6, and a group of annular air outlet holes 12 are provided on the bottom surface of the hollow disk 6; the inner wall of the slide groove 7 is sealed and slidably connected to a slide plate 8, and the bottom surface of the slide plate 8 is fixedly connected to an electromagnet 9, a first magnetic block 10 that repels the electromagnet 9 is provided in the slide groove 7, and a group of first springs are fixedly connected between the bottom surface of the slide plate 8 and the inner wall of the slide groove 7; the inner wall of the connecting block 3 is fixedly connected to a connecting frame 4, and the inner wall of the connecting frame 4 is fixedly connected to a filter screen 5 for filtering smoke and dust;

[0030] An anti-interference PTC heater, a carbon fiber filter and a semipermeable membrane can be set in the connector 2 to increase the anti-interference performance of the gas alarm 1. When the gas alarm 1 is working normally, the methane sensor in the connector 2 is used to detect whether the methane concentration exceeds the preset value. When the preset value is exceeded, an audible and visual alarm is triggered. In daily use, the filter 5 can filter oil and dust to prevent the carbon fiber filter and the semipermeable membrane from being affected. The electromagnet 9 can be set to start once every two days. When it is started once, the electromagnet 9 is turned on intermittently for 10 to 15 minutes. The electromagnet 9 is turned on intermittently. When the row is opened, it will repel the first magnetic block 10. At this time, the slide plate 8 will move upward under the thrust of the electromagnet 9. At this time, the gas in the chute 7 can enter the hollow disk 6 from the connecting pipe 11, and then be blown onto the filter 5 from the air outlet 12 to blow air to dredge the filter 5, so as to prevent the filter 5 from being blocked, hindering gas penetration, and affecting the detection sensitivity of the methane sensor. When the electromagnet 9 is closed, the first spring will pull the slide plate 8 to reset, so that when the electromagnet 9 is intermittently started, the air outlet 12 can be continuously blown to achieve the effect of dredging the filter 5.

[0031] The top surface of the inner wall of the hollow disk 6 is slidably connected to a group of second springs corresponding to the air outlet 12, and the bottom surface of the second spring is fixedly connected to a ball 13 for sealing the air outlet 12; when the slide 8 in the present application moves upward, it will push the gas in the slide groove 7, so that the gas enters the hollow disk 6 from the connecting pipe 11. At this time, the gas will push the ball 13, so that the ball 13 moves downward, so that the ball 13 hits the filter screen 5, causing the filter screen 5 to shake, so that impurities on the filter screen 5 can be shaken and fall off, thereby improving the self-cleaning effect of the filter screen 5.

[0032] A through hole 14 is provided in the ball 13. The through hole 14 is horn-shaped on the side close to the first spring. A pair of elastic ropes 16 are fixedly connected to the inner wall of the through hole 14. The other end of the elastic rope 16 is fixedly connected to the sealing ball 15. Since the slide plate 8 and the chute 7 are sealed and slidably connected, gas needs to enter the chute 7 when the slide plate 8 moves downward to reset. Through the above structure, when the slide plate 8 is pulled downward by the first spring, the sealing ball 15 will be sucked by the suction force, so that the sealing ball 15 no longer seals the through hole 14. At this time, the gas can enter the hollow disk 6 from the through hole 14, and then enter the chute 7, so that the slide 8 can move downward. When the slide 8 stops moving, the elastic rope 16 will pull the sealing ball 15 to reset. At this time, the sealing ball 15 will hit the inner wall of the through hole 14, thereby making the ball 13 shake so that impurities on the ball 13 can fall off. The ball 13 needs to continuously hit the filter screen 5, and it is inevitable that impurities will adhere to the ball 13.

[0033] The inner wall of the connecting frame 4 is provided with a moving groove 20, the inner wall of the moving groove 20 is slidably connected with a magnetic plate 19, the side, away from the moving groove 20, of the magnetic plate 19 is fixedly connected with a cleaning block 17, the top surface of the cleaning block 17 is fixedly connected with a group of bristles 18 abutting against the filter screen 5, and the connecting frame 4 is provided with a moving assembly for driving the cleaning block 17 to move.

[0034] The moving assembly comprises a hollow groove 22 in the connecting frame 4, the inner wall of the hollow groove 22 is sealingly and slidably connected with a second magnetic block 21 magnetically attracted to the magnetic plate 19, the top surface of the connecting frame 4 is provided with a circular hole in communication with the hollow groove 22, the hollow groove 22 and the sliding groove 7 are in communication with a conduit 23, and the conduit 23 is located on the bottom surface of the sliding plate 8; when the sliding plate 8 moves upward, the conduit 23 can suck the gas in the hollow groove 22 into the sliding groove 7, so that the gas can drive the second magnetic block 21 to move, so that the second magnetic block 21 drives the magnetic plate 19 to move, so that the cleaning block 17 moves, and the bristles 18 clean the filter screen 5; when the sliding plate 8 moves downward, the sliding plate 8 pushes the gas in the sliding groove 7 to re-enter the hollow groove 22, so that the gas drives the second magnetic block 21 to reset, and the cleaning block 17 moves synchronously, so as to control the cleaning block 17 to move back and forth.

[0035] The cleaning block 17 is provided with a storage groove 24, the storage groove 24 stores a cleaning agent for cleaning oil stains, the cleaning block 17 is slidably connected with a push plate 26 for pushing the cleaning agent, the bottom surface of the push plate 26 is fixedly connected with a group of third springs between the inner wall of the storage groove 24, the top surface of the cleaning block 17 is provided with a plurality of liquid outlet holes 25 in communication with the storage groove 24, and the cleaning block 17 is provided with a control mechanism for controlling the movement of the push plate 26; the cleaning block 17 in the application can control the stroke of the push plate 26 moving upward through the control mechanism, the cleaning agent can be discharged from the liquid outlet hole 25 to the bristles 18 when the push plate 26 moves upward, and the bristles 18 can further clean the oil stains on the filter screen 5 through the cleaning agent when the cleaning block 17 moves.

[0036] The control mechanism includes a group of limit rods 31 slidably connected to the side walls of the cleaning block 17, the limit rods 31 are used to block the push plate 26, the limit rods 31 are made of magnetic material, the surface of the limit rods 31 is fixedly connected to a ring 30, and the ring 30 is fixedly connected to the side walls of the cleaning block 17. In the present application, there is a group of limit rods 31 and a group of fourth springs. The upper fourth spring has greater elasticity. During the movement of the cleaning block 17, it will approach the electromagnet 9. When the slide 8 moves to the maximum stroke, the electromagnet 9 will correspond to the position of the limit rod 31. At this time, the magnetic force of the electromagnet 9 can be controlled to control the suction of the limit rod 31. The minimum magnetic force will suck the limit rod 31 at the bottom away from the baffle. At this time, the fourth spring will push the baffle, so that the detergent is sprayed from the liquid outlet 25 to the bristles 18, so that the detergent in the storage tank 24 can be used multiple times.

[0037] The inner wall of the storage tank 24 is fixedly connected with a partition, and a hollow block 27 is sealed and slidably connected between the partition and the storage tank 24, and a fifth spring is fixedly connected between the hollow block 27 and the inner wall of the storage tank 24. A liquid inlet groove 29 is provided on the side of the hollow block 27 away from the fifth spring, and a connecting groove 28 corresponding to the liquid outlet 25 is provided on the top surface of the hollow block 27; the hollow block 27 in the present application can seal the liquid outlet 25 under normal conditions. When the detergent in the storage tank 24 is in continuous contact with the air, its chemical composition may change, which will eventually affect the decontamination ability and cleaning effect. The hollow block 27 can allow the detergent to be stored in a sealed environment. When the push plate 26 pushes the detergent upward, the detergent will enter the liquid inlet groove 29. At this time, the detergent will push the hollow block 27, so that the liquid outlet 25 is aligned with the connecting groove 28, so that the detergent can be sprayed from the liquid outlet 25 onto the bristles 18.

[0038] Example 2: Figures 6 and 7 As shown, comparative example 1, in which another embodiment of the present invention is: the inner wall of the connecting block 3 is twisted with a sealing plate 32 by a torsion spring, and the sealing plate 32 is used to seal the port of the connecting block 3, and a collecting groove 33 is provided in the sealing plate 32, and a feed groove 34 connected to the collecting groove 33 is provided on the top surface of the sealing plate 32, and a rotating component for controlling the rotation of the sealing plate 32 is provided in the slide groove 7; when the filter screen 5 is cleaned and unblocked, the sealing plate 32 can be controlled to rotate with the help of the rotating component to seal the port of the connecting block 3, and the free end of the sealing plate 32 will rotate to an inclined state, and the impurities cleaned up will slide on the inclined sealing plate 32 at this time, and then enter the collecting groove 33 from the feed groove 34 for collection.

[0039] The rotating assembly includes a first elastic block 35 fixedly connected to the bottom surface of the sealing plate 32. The first elastic block 35 is arc-shaped and has a hollow structure inside. The end of the first elastic block 35 away from the sealing plate 32 is fixedly connected to the bottom surface of the connecting block 3. The inner wall of the slide groove 7 is fixedly connected to the second elastic block 37. The interior of the second elastic block 37 is a hollow structure. The first magnetic block 10 is fixedly connected to the top surface of the inner wall of the second elastic block 37. A sixth spring is fixedly connected between the bottom surface of the first magnetic block 10 and the inner wall of the elastic block. The inner opening of the connecting block 3 A ventilation groove 36 is provided which is connected to the second elastic block 37, and the bottom end of the ventilation groove 36 is connected to the second elastic block 37; the electromagnet 9 in the present application will repel the first magnetic block 10 when started, and the first magnetic block 10 will pull the second elastic block 37 to deform. At this time, the gas in the second elastic block 37 will enter the second elastic block 37 from the ventilation groove 36, thereby allowing the second elastic block 37 to expand and deform, so as to push the sealing plate 32 to tilt, and at the same time, the sealing plate 32 will seal the port of the connecting block 3, so as to achieve the effect of controlling the automatic rotation of the sealing plate 32.

[0040] Working principle: Oil and dust can be filtered through the filter 5 to prevent it from affecting the carbon fiber filter and the semipermeable membrane. The electromagnet 9 can be set to start once every two days. During one start-up, the electromagnet 9 is intermittently turned on for 10 to 15 minutes. When the electromagnet 9 is turned on, it will repel the first magnetic block 10. At this time, the slide 8 will move upward under the thrust of the electromagnet 9. At this time, the gas in the chute 7 can enter the hollow disk 6 from the connecting pipe 11, and then be blown onto the filter 5 from the air outlet 12 to blow air to dredge the filter 5 to prevent the filter 5 from being blocked, hindering gas penetration, and affecting the detection sensitivity of the methane sensor. When the electromagnet 9 is closed, the first spring will pull the slide 8 to reset, so that when the electromagnet 9 is started intermittently, the air outlet 12 can be continuously blown to achieve the effect of dredging the filter 5; the slide 8 is When it moves upward, it pushes the gas in the chute 7, so that the gas enters the hollow disk 6 from the connecting pipe 11. At this time, the gas pushes the ball 13, so that the ball 13 moves downward, so that the ball 13 hits the filter screen 5, causing the filter screen 5 to shake, so that the impurities on the filter screen 5 can be shaken and fall off, thereby improving the self-cleaning effect of the filter screen 5; when the slide plate 8 is pulled downward by the first spring, the sealing ball 15 is sucked by the suction force, so that the sealing ball 15 no longer seals the through hole 14. At this time, the gas can enter the hollow disk 6 from the through hole 14, and then enter the chute 7, so that the slide plate 8 can move downward. When the slide plate 8 stops moving, the elastic rope 16 pulls the sealing ball 15 to reset. At this time, the sealing ball 15 hits the inner wall of the through hole 14, so that the ball 13 shakes, so that the impurities on the ball 13 can fall off;

[0041] When the slide 8 moves upward, the conduit 23 will suck the gas in the hollow groove 22 into the chute 7. At this time, the gas will attract the second magnetic block 21, so that the second magnetic block 21 drives the magnetic plate 19 to move, thereby allowing the cleaning block 17 to move, so that the bristles 18 can clean the filter 5. When the slide 8 moves downward, the slide 8 will push the gas in the chute 7 to re-enter the hollow groove 22. At this time, the gas will push the second magnetic block 21 to reset. At this time, the cleaning block 17 will follow the synchronous movement to achieve the effect of controlling the cleaning block 17 to move back and forth; when the cleaning block 17 moves, the upward movement stroke of the push plate 26 can be controlled by the control mechanism. When the push plate 26 moves upward, the detergent can be discharged from the liquid outlet 25 to the bristles 18. At this time, when the cleaning block 17 moves, the bristles 18 can further clean the oil stains on the filter 5 through the detergent;

[0042] By controlling the magnetic force of the electromagnet 9 to control the suction limit rod 31, the smallest magnetic force will attract the limit rod 31 at the bottom to move away from the baffle. At this time, the fourth spring will push the baffle, so that the detergent is sprayed from the liquid outlet 25 to the bristles 18, so that the detergent in the storage tank 24 can be used multiple times; the hollow block 27 can seal the liquid outlet 25 under normal conditions. When the detergent in the storage tank 24 is in continuous contact with the air, its chemical composition may change, which will eventually affect the decontamination ability and cleaning effect. The hollow block 27 allows the detergent to be stored in a sealed environment. When the push plate 26 pushes the detergent upward, the detergent will enter the liquid inlet tank 29. At this time, the detergent will push the hollow block 27, so that the liquid outlet 25 is aligned with the connecting groove 28, so that the detergent can be sprayed from the liquid outlet 25 to the bristles 18.

[0043] The above-mentioned front, back, left, right, up and down are all based on the Figure 1 As a benchmark, according to the person's observation perspective, the side of the device facing the observer is defined as the front, the left side of the observer is defined as the left, and so on.

[0044] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention 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 limiting the scope of protection of the present invention.

[0045] The above shows and describes the basic principles, main features and advantages of the present application. Those skilled in the art should understand that the present application is not limited to the above-mentioned embodiments, and the above-mentioned embodiments and descriptions in the specification are only to illustrate the principles of the present application. Without departing from the spirit and scope of the present application, various changes and improvements can be made to the present application, and these changes and improvements all fall within the scope of the claimed present application. The scope of protection of the present application is defined by the appended claims and their equivalents.

Claims

1. An anti-interference gas alarm device, comprising a gas alarm (1); a connector (2) is connected to the gas alarm (1); a connecting block (3) is installed on the bottom surface of the connector (2); the bottom surface of the connecting block (3) is opened; and a methane sensor is arranged in the connector (2); Its characteristics are: A chute (7) is provided in the connecting block (3), a pair of connecting pipes (11) are connected in the chute (7), one end of the connecting pipe (11) away from the chute (7) is connected to a hollow disk (6), and a group of annularly evenly distributed air outlet holes (12) are provided on the bottom surface of the hollow disk (6); The inner wall of the slide groove (7) is sealed and slidably connected to a slide plate (8), the bottom surface of the slide plate (8) is fixedly connected to an electromagnet (9), a first magnetic block (10) that repels the electromagnet (9) is provided in the slide groove (7), and a group of first springs are fixedly connected between the bottom surface of the slide plate (8) and the inner wall of the slide groove (7); The inner wall of the connecting block (3) is fixedly connected to a connecting frame (4), and the inner wall of the connecting frame (4) is fixedly connected to a filter screen (5) for filtering smoke and dust; A set of second springs corresponding to the air outlet holes (12) are slidably connected to the top surface of the inner wall of the hollow disk (6), and a ball (13) for sealing the air outlet holes (12) is fixedly connected to the bottom surface of the second spring; A through hole (14) is provided in the sphere (13), and the through hole (14) is trumpet-shaped on a side close to the first spring. A pair of elastic ropes (16) are fixedly connected to the inner wall of the through hole (14), and the other end of the elastic rope (16) is fixedly connected to a sealing ball (15); The inner wall of the connecting frame (4) is provided with a movable groove (20), the inner wall of the movable groove (20) is slidably connected to a magnetic plate (19), a cleaning block (17) is fixedly connected to a side of the magnetic plate (19) away from the movable groove (20), a top surface of the cleaning block (17) is fixedly connected to a group of bristles (18) that fit the filter (5), and a movable component for driving the cleaning block (17) to move is provided on the connecting frame (4); The moving assembly includes a hollow groove (22) provided in a connecting frame (4), the inner wall of the hollow groove (22) is sealed and slidably connected to a second magnetic block (21) magnetically attracted to the magnetic plate (19), a circular hole connected to the hollow groove (22) is provided on the top surface of the connecting frame (4), a conduit (23) is connected between the hollow groove (22) and the slide groove (7), and the conduit (23) is located on the bottom surface of the slide plate (8).

2. The anti-interference gas alarm device according to claim 1, characterized in that: A storage tank (24) is provided in the cleaning block (17), and a cleaning agent for cleaning oil stains is stored in the storage tank (24). A push plate (26) for pushing the cleaning agent is slidably connected in the cleaning block (17), and a group of third springs are fixedly connected between the bottom surface of the push plate (26) and the inner wall of the storage tank (24). A plurality of groups of liquid outlet holes (25) communicating with the storage tank (24) are provided on the top surface of the cleaning block (17), and a control mechanism for controlling the movement of the push plate (26) is provided in the cleaning block (17).

3. The anti-interference gas alarm device according to claim 2, characterized in that: The control mechanism includes a set of limiting rods (31) slidably connected to the side wall of the cleaning block (17), the limiting rods (31) are used to block the push plate (26), the limiting rods (31) are made of magnetic material, the surface of the limiting rods (31) is fixedly connected to a ring (30), and a fourth spring is fixedly connected between the ring (30) and the side wall of the cleaning block (17).

4. The anti-interference gas alarm device according to claim 3, characterized in that: A partition is fixedly connected to the inner wall of the storage tank (24), a hollow block (27) is sealed and slidably connected between the partition and the storage tank (24), a fifth spring is fixedly connected between the hollow block (27) and the inner wall of the storage tank (24), a liquid inlet groove (29) is provided on a side of the hollow block (27) away from the fifth spring, and a connecting groove (28) corresponding to the liquid outlet hole (25) is provided on the top surface of the hollow block (27).

5. The anti-interference gas alarm device according to claim 1, characterized in that: The inner wall of the connecting block (3) is twisted with a sealing plate (32) via a torsion spring. The sealing plate (32) is used to seal the port of the connecting block (3). A collecting groove (33) is provided in the sealing plate (32), and a feeding groove (34) communicating with the collecting groove (33) is provided on the top surface of the sealing plate (32). A rotating assembly for controlling the rotation of the sealing plate (32) is provided in the sliding groove (7).

6. The anti-interference gas alarm device according to claim 5, characterized in that: The rotating assembly includes a first elastic block (35) fixedly connected to the bottom surface of the sealing plate (32), the first elastic block (35) is arc-shaped and has a hollow structure inside, the end of the first elastic block (35) away from the sealing plate (32) is fixedly connected to the bottom surface of the connecting block (3), the inner wall of the sliding groove (7) is fixedly connected to the second elastic block (37), the interior of the second elastic block (37) is a hollow structure, the first magnetic block (10) is fixedly connected to the top surface of the inner wall of the second elastic block (37), a sixth spring is fixedly connected between the bottom surface of the first magnetic block (10) and the inner wall of the elastic block, and a ventilation groove (36) connected to the second elastic block (37) is provided in the connecting block (3), and the bottom end of the ventilation groove (36) is connected to the second elastic block (37).

Images