Inflammable and explosive gas concentration detection device

Abstract

The utility model discloses a flammable and explosive gas concentration detection device which comprises a mounting plate, a connecting plate is fixedly connected to the front face of the mounting plate, a positioning hole is formed in the middle of the connecting plate, a sliding rail is fixedly connected to the side, close to the connecting plate, of the mounting plate, and a moving block is slidably connected to the side, away from the mounting plate, of the sliding rail. The side, close to the connecting plate, of the moving block is fixedly connected with a sliding sleeve, the inner wall of the sliding sleeve is fixedly connected with a first spring, and the end, close to the connecting plate, of the first spring is fixedly connected with a positioning block. According to the utility model, the moving block is installed on the sliding rail, the detection device body is moved, the positioning block slides in the sliding sleeve, the first spring is extruded and contracted, and after the first spring moves to a proper position, the positioning block moves back and is clamped in the positioning hole under the elastic force of the first spring, so that the position of the detection device body is fixed; and the positioning block can be separated from the positioning hole by pressing the positioning block inwards when needing to be disassembled, so that the disassembly is convenient.

Description

Technical Field

[0001] This utility model relates to the field of gas concentration detection technology, specifically to a device for detecting the concentration of flammable and explosive gases. Background Technology

[0002] A gas concentration detection device is a device used to detect, analyze, and measure the concentration of one or more gases in the air. It primarily achieves its detection function through built-in gas sensors. These sensors convert the physical or chemical signals generated when gas molecules come into contact with the sensor into electrical signals. These signals are then processed by external circuitry to ultimately display the gas concentration, thus achieving a detection and early warning effect.

[0003] According to publication number CN221945992U, a flammable and explosive gas concentration detection device with a protective structure includes a detection device body. A mounting plate is fixedly connected to the rear side of the detection device body, and a protective component is provided on the front side of the detection device body. The mounting plate and the protective component are connected via the mounting component. An inlet pipe is fixedly connected to the bottom side of the detection device body, and an outlet is fixedly connected to the outer wall of the inlet pipe. An inlet pipe 2 is sleeved at the bottom end of the inlet pipe, and the inlet pipe 1 and inlet pipe 2 are connected by a locking component. This invention enables the flammable and explosive gas concentration detection device to filter and absorb dust and moisture when detecting gas, reducing the impact of dust and moisture on the equipment and thus extending its service life. Furthermore, it allows for convenient replacement of the filter pack without tools, improving ease of use.

[0004] The above-mentioned installation components can be used to install the detection device body and protective components. However, after the detection device body has been used for a period of time, in order to ensure the accuracy of its detection, it needs to be disassembled and maintained regularly. When using tools to disassemble the nuts, the operation is inconvenient and it is easy to cause friction with the detection device body, resulting in damage. Utility Model Content

[0005] The purpose of this invention is to provide a flammable and explosive gas concentration detection device to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a flammable and explosive gas concentration detection device, comprising a mounting plate, a connecting plate fixedly connected to the front of the mounting plate, a positioning hole provided in the middle of the connecting plate, a slide rail fixedly connected to the side of the mounting plate near the connecting plate, a moving block slidably connected to the side of the slide rail away from the mounting plate, a sliding sleeve fixedly connected to the side of the moving block near the connecting plate, a first spring fixedly connected to the inner wall of the sliding sleeve, a positioning block fixedly connected to the end of the first spring near the connecting plate, and a detection device body fixedly connected to the side of the moving block away from the slide rail.

[0007] As a further preferred embodiment of this technical solution, there are two connecting plates and multiple positioning holes. The positioning block and the sliding sleeve are slidably connected, and the positioning block and the positioning hole are adapted to each other.

[0008] As a further preferred embodiment of this technical solution, a wiring port is fixedly connected to the left side of the detection device body, an audible and visual alarm is fixedly connected to the side of the detection device body away from the wiring port, a display panel is fixedly connected to the front of the detection device body, and a protective plate is fixedly connected to the front of the detection device body.

[0009] As a further preferred embodiment of this technical solution, an air inlet pipe is fixedly connected to the bottom end of the detection device body, a baffle is fixedly connected to the inner wall of the air inlet pipe, a second spring is fixedly connected to the bottom end of the baffle, a filter layer is provided at the bottom end of the second spring, a threaded groove is provided at the bottom of the air inlet pipe, a connecting sleeve is threadedly connected inside the threaded groove, and an O-ring is movably fitted on the surface of the connecting sleeve.

[0010] As a further preferred embodiment of this technical solution, the baffle adopts an annular structure, the filter layer is composed of a coarse filter screen and a precision filter screen, the top of the connecting screw sleeve is in contact with the filter layer, and the O-ring is made of rubber.

[0011] As a further preferred embodiment of this technical solution, a dustproof mesh is provided at the bottom of the connecting screw sleeve, and mounting grooves are provided on the left and right sides of the connecting screw sleeve. A return spring is fixedly connected to the inner wall of the mounting groove, and a ball is fixedly connected to the end of the return spring away from the mounting groove. A fixing plate is slidably connected to the bottom of the connecting screw sleeve, and a limit groove is provided on the inner wall of the fixing plate.

[0012] As a further preferred embodiment of this technical solution, the dustproof net is in contact with the fixing plate, the ball bearing is located inside the mounting groove, and the ball bearing is adapted to the limiting groove.

[0013] This utility model provides a device for detecting the concentration of flammable and explosive gases, which has the following beneficial effects:

[0014] (1) The present invention uses screws to fix the mounting plate to the workplace, and uses a moving block to install the detection device body on the slide rail. When the detection device body is moved, the positioning block slides inside the sliding sleeve due to the limiting effect of the connecting plate. The first spring is compressed and contracted. After it moves to the appropriate position, the positioning block moves back and engages in the positioning hole under the elastic force of the first spring, thereby fixing the position of the detection device body. When it needs to be disassembled, the positioning block can be pressed inward to disengage it from the positioning hole, thus facilitating disassembly.

[0015] (2) This utility model installs the dustproof net at the bottom of the connecting screw sleeve and aligns the fixing plate with the connecting screw sleeve. Pushing the fixing plate upward causes the ball to slide in the mounting groove due to its limiting function. The return spring is compressed and contracted. When the bottom of the connecting screw sleeve contacts the inner wall of the fixing plate, the fixing plate is rotated. After rotating a certain angle, the ball and the limiting groove align, and the ball is engaged in the limiting groove under the elastic force of the return spring. Thus, the fixing plate limits the dustproof net, making it convenient for the installation and disassembly of the dustproof net. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of this utility model;

[0017] Figure 2 This is a bottom view of the structure of this utility model;

[0018] Figure 3 This is a schematic diagram of the sliding sleeve and positioning block structure of this utility model;

[0019] Figure 4 This is a schematic diagram of the cross-sectional structure of the air intake pipe of this utility model;

[0020] Figure 5 This is a schematic diagram of the unfolded structure of the connecting screw sleeve and fixing plate of this utility model.

[0021] In the diagram: 1. Mounting plate; 2. Connecting plate; 3. Positioning hole; 4. Slide rail; 5. Moving block; 6. Sliding sleeve; 7. First spring; 8. Positioning block; 9. Detection device body; 10. Wiring port; 11. Audible and visual alarm; 12. Display panel; 13. Protective plate; 14. Air inlet pipe; 15. Baffle; 16. Second spring; 17. Filter layer; 18. Threaded groove; 19. Connecting screw sleeve; 20. O-ring; 21. Dustproof net; 22. Mounting groove; 23. Return spring; 24. Ball bearing; 25. Fixing plate; 26. Limiting groove. Detailed Implementation

[0022] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0023] This utility model provides a technical solution: such as Figure 1 and Figure 5As shown, in this embodiment, the flammable and explosive gas concentration detection device includes a mounting plate 1. A connecting plate 2 is fixedly connected to the front of the mounting plate 1. A positioning hole 3 is provided in the middle of the connecting plate 2. A slide rail 4 is fixedly connected to the side of the mounting plate 1 near the connecting plate 2. A moving block 5 is slidably connected to the side of the slide rail 4 away from the mounting plate 1. A sliding sleeve 6 is fixedly connected to the side of the moving block 5 near the connecting plate 2. A first spring 7 is fixedly connected to the inner wall of the sliding sleeve 6. A positioning block 8 is fixedly connected to the end of the first spring 7 near the connecting plate 2. The detection device body 9 is fixedly connected to the side of the moving block 5 away from the slide rail 4.

[0024] The mounting plate 1 is fixed to the workplace with screws. The detection device body 9 is installed on the slide rail 4 by the moving block 5. When the detection device body 9 is moved, the positioning block 8 slides inside the sliding sleeve 6 due to the limiting effect of the connecting plate 2. The first spring 7 is compressed and contracted. After it moves to the appropriate position, the positioning block 8 moves back and locks into the positioning hole 3 under the elastic force of the first spring 7, thereby fixing the position of the detection device body 9. When it needs to be disassembled, the positioning block 8 can be pressed inward to disengage it from the positioning hole 3, which facilitates disassembly and avoids damage to the detection device body 9 caused by friction between wrenches and other tools.

[0025] There are two connecting plates 2 and multiple positioning holes 3. The positioning block 8 and the sliding sleeve 6 are slidably connected, and the positioning block 8 and the positioning hole 3 are adapted to each other.

[0026] A wiring port 10 is fixedly connected to the left side of the detection device body 9, an audible and visual alarm 11 is fixedly connected to the side of the detection device body 9 away from the wiring port 10, a display panel 12 is fixedly connected to the front of the detection device body 9, and a protective plate 13 is fixedly connected to the front of the detection device body 9.

[0027] The detection device body 9 can be easily connected to external equipment via the connection port 10. The detection data can be displayed using the display panel 12. When the gas concentration is abnormal, the sound and light alarm 11 can alert the staff, thus facilitating timely maintenance.

[0028] An air inlet pipe 14 is fixedly connected to the bottom of the detection device body 9. A baffle 15 is fixedly connected to the inner wall of the air inlet pipe 14. A second spring 16 is fixedly connected to the bottom of the baffle 15. A filter layer 17 is provided at the bottom of the second spring 16. A threaded groove 18 is opened at the bottom of the air inlet pipe 14. A connecting screw sleeve 19 is threaded inside the threaded groove 18. An O-ring 20 is movably fitted on the surface of the connecting screw sleeve 19.

[0029] By placing the filter layer 17 inside the air intake pipe 14, and fitting the O-ring 20 onto the connecting screw sleeve 19, the connecting screw sleeve 19 is rotated to screw it into the air intake pipe 14, thus limiting the position of the filter layer 17. The O-ring 20 ensures the airtightness of the connection. After the gas enters the air intake pipe 14, it can be filtered by the filter layer 17 to prevent foreign objects from clogging the air intake pipe 14. A second spring 16 is provided between the baffle 15 and the filter layer 17, which allows the filter layer 17 to be easily removed after the connecting screw sleeve 19 is removed.

[0030] The baffle 15 adopts a ring structure, the filter layer 17 is composed of a coarse filter screen and a precision filter screen, the top of the connecting screw sleeve 19 is in contact with the filter layer 17, and the O-ring 20 is made of rubber.

[0031] A dustproof net 21 is provided at the bottom of the connecting screw sleeve 19. Mounting grooves 22 are provided on the left and right sides of the connecting screw sleeve 19. A return spring 23 is fixedly connected to the inner wall of the mounting groove 22. A ball bearing 24 is fixedly connected to the end of the return spring 23 away from the mounting groove 22. A fixing plate 25 is slidably connected to the bottom of the connecting screw sleeve 19. A limit groove 26 is provided on the inner wall of the fixing plate 25.

[0032] By installing the dustproof net 21 at the bottom of the connecting screw sleeve 19 and aligning the fixing plate 25 with the connecting screw sleeve 19, and pushing the fixing plate 25 upward, the ball bearing 24 slides within the mounting groove 22 due to its limiting action. The return spring 23 is compressed and contracted. Once the bottom of the connecting screw sleeve 19 contacts the inner wall of the fixing plate 25, the fixing plate 25 is rotated. After rotating a certain angle, the ball bearing 24 aligns with the limiting groove 26, and under the elastic force of the return spring 23, the ball bearing 24 is engaged inside the limiting groove 26. Thus, the fixing plate 25 limits the dustproof net 21, facilitating its installation and removal, and cleaning, preventing foreign objects from clogging the mesh and affecting normal air intake.

[0033] The dustproof net 21 is in contact with the fixing plate 25, the ball bearing 24 is located inside the mounting groove 22, and the ball bearing 24 is adapted to the limiting groove 26.

[0034] This utility model provides a flammable and explosive gas concentration detection device, the specific working principle of which is as follows:

[0035] In use, the mounting plate 1 is fixed to the workplace with screws. The detection device body 9 is installed on the slide rail 4 by the moving block 5. Moving the detection device body 9 causes the positioning block 8 to slide inside the sliding sleeve 6 due to the limiting effect of the connecting plate 2. The first spring 7 is compressed and contracted. After it moves to the appropriate position, the positioning block 8 moves back and engages in the positioning hole 3 under the elastic force of the first spring 7, thereby fixing the position of the detection device body 9. The filter layer 17 is placed in the air inlet pipe 14. The O-ring 20 is fitted on the connecting thread sleeve 19. The connecting thread sleeve 19 is rotated to screw it into the air inlet pipe 14 and limit the filter layer 17. The O-ring 20 ensures the connection at the joint. For airtightness, the dustproof net 21 is installed at the bottom of the connecting screw sleeve 19, and the fixing plate 25 is aligned with the connecting screw sleeve 19. The fixing plate 25 is pushed upward, and the ball 24 slides in the mounting groove 22 due to its limiting force. The return spring 23 is compressed and contracted. When the bottom of the connecting screw sleeve 19 contacts the inner wall of the fixing plate 25, the fixing plate 25 is rotated. After rotating a certain angle, the ball 24 aligns with the limiting groove 26, and the ball 24 is locked inside the limiting groove 26 under the elastic force of the return spring 23. Thus, the fixing plate 25 limits the dustproof net 21. When it is necessary to disassemble the detection device body 9, the positioning block 8 is pressed inward to disengage it from the positioning hole 3, thereby completing the disassembly and maintenance.

[0036] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A device for detecting the concentration of flammable and explosive gases, comprising a mounting plate (1), characterized in that: The front surface of the mounting plate (1) is fixedly connected with a connecting plate (2), the middle part of the connecting plate (2) is provided with a positioning hole (3), one side of the mounting plate (1) close to the connecting plate (2) is fixedly connected with a sliding rail (4), the side of the sliding rail (4) away from the mounting plate (1) is slidably connected with a moving block (5), one side of the moving block (5) close to the connecting plate (2) is fixedly connected with a sliding sleeve (6), the inner wall of the sliding sleeve (6) is fixedly connected with a first spring (7), one end of the first spring (7) close to the connecting plate (2) is fixedly connected with a positioning block (8), and the side of the moving block (5) away from the sliding rail (4) is fixedly connected with a detection device body (9).

2. The device according to claim 1, characterized in that: The number of the connecting plate (2) is two, the number of the positioning hole (3) is multiple, the positioning block (8) and the sliding sleeve (6) are slidably connected, and the positioning block (8) and the positioning hole (3) are matched.

3. The device of claim 1, wherein: The left side of the detection device body (9) is fixedly connected with a wiring port (10), the side of the detection device body (9) away from the wiring port (10) is fixedly connected with an audible and visual alarm (11), the front surface of the detection device body (9) is fixedly connected with a display panel (12), and the front surface of the detection device body (9) is fixedly connected with a protective plate (13).

4. The device of claim 1, wherein: The bottom end of the detection device body (9) is fixedly connected with an air inlet pipe (14), the inner wall of the air inlet pipe (14) is fixedly connected with a baffle (15), the bottom end of the baffle (15) is fixedly connected with a second spring (16), the bottom end of the second spring (16) is provided with a filter layer (17), the bottom of the air inlet pipe (14) is provided with a threaded groove (18), the inside of the threaded groove (18) is threadedly connected with a connecting screw sleeve (19), and the surface of the connecting screw sleeve (19) movably sleeved with an O-shaped ring (20).

5. The device according to claim 4, characterized in that: The baffle (15) adopts an annular structure, the filter layer (17) is composed of a rough filter screen and a precision filter screen, the top of the connecting screw sleeve (19) is in contact with the filter layer (17), and the O-shaped ring (20) is made of rubber material.

6. The device of claim 4, wherein: The bottom of the connecting screw sleeve (19) is provided with a dust screen (21), the left and right sides of the connecting screw sleeve (19) are provided with mounting grooves (22), the inner wall of the mounting groove (22) is fixedly connected with a return spring (23), one end of the return spring (23) away from the mounting groove (22) is fixedly connected with a ball (24), the bottom of the connecting screw sleeve (19) is slidably connected with a fixed plate (25), and the inner wall of the fixed plate (25) is provided with a limiting groove (26).

7. The device according to claim 6, characterized in that: The dust screen (21) and the fixed plate (25) are in contact, the ball (24) is located in the inside of the mounting groove (22), and the ball (24) and the limiting groove (26) are matched.

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