Explosion-proof gas detector

Abstract

The utility model relates to the technical field of detection instruments, and discloses an explosion-proof gas detector, which comprises a through pipe, the left side and the right side of the through pipe are communicated with connecting pipes, the inner walls of the connecting pipes and the through pipe are fixedly connected with second filter plates, the top of the through pipe is communicated with an air guide pipe, the inner wall of the air guide pipe is fixedly connected with an exhaust fan, and the exhaust fan is fixedly connected with an air outlet. The top of the air guide pipe communicates with a first air pipe, the top end of the first air pipe communicates with a second air pipe, the inner wall of the second air pipe is fixedly connected with a first fixing rod, the bottom of the first fixing rod is fixedly connected with a fixing column, and a sliding disc is arranged on the outer wall of the fixing column. According to the utility model, the exhaust fan is started to blow outside air into the first air pipe through the air guide pipe so as to upwards extrude the sliding disc to enable the compression spring to slide on the fixed column, so that the purpose of displaying the state of the filter is achieved, the maintenance efficiency is accelerated, the safety is improved, and the practicability is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of detection instruments, in particular to an explosion-proof gas detector. Background Art

[0002] Explosive gases refer to gases that can cause explosions under specific circumstances. These gases are flammable. When they mix with air and reach a certain concentration, they have a high probability of explosion when they encounter fire, high temperature, and energy stimulated by electric sparks. Explosion-proof gases are widely used in the petrochemical, metallurgical, and power industries. Therefore, in these environments, corresponding explosion-proof measures must be taken to ensure safety, including the installation of explosion-proof gas detectors.

[0003] An explosion-proof gas detector is an instrument specifically used to detect the concentration of flammable or toxic gases in the environment. It is widely used in flammable and explosive places such as petroleum, chemical industry and metallurgy. Its main function is to monitor the gas concentration in real time and issue an alarm when the dangerous threshold is reached, thereby preventing explosions and poisoning accidents. During use, the detector needs to be calibrated regularly to ensure measurement accuracy and maintained in accordance with the manufacturer's maintenance guidelines. It is an important tool for ensuring industrial safety and personnel health. Through reasonable selection and use, it can effectively prevent explosions and poisoning accidents and ensure the safety of the production environment.

[0004] After searching, China Patent Publication No.: CN209280678U discloses an alarm device for an explosion-proof gas detector, including a mounting plate, on which an explosion-proof gas detector body is fixedly mounted, a mounting block is fixedly connected to the back of the explosion-proof gas detector, and a fixed block is fixedly connected to the back of the mounting block. A fixing groove adapted to the fixed block is provided on the front of the mounting plate, and a limiting block is fixedly connected between the left and right sides of the inner surface of the fixing groove. A limiting groove adapted to the limiting block is provided on the back of the fixed block, and the top and bottom of the inner surface of the limiting groove are both connected with a groove, and a moving block is slidably connected to the left side of the inner surface of the groove, and a stopper is fixedly connected to the opposite side of the two moving blocks. The alarm device for the explosion-proof gas detector is extremely simple to install and disassemble, easy to replace and repair, greatly saving replacement time, and has a stable installation. However, it cannot display whether the filter needs to be cleaned and replaced, which can easily cause blockage of the air inlet, resulting in low maintenance efficiency, poor safety, and reduced practicality. Utility Model Content

[0005] In order to make up for the above shortcomings, the utility model provides an explosion-proof gas detector, which aims to improve the problem in the prior art that the existing explosion-proof gas detector cannot display whether the filter needs to be cleaned and replaced, which easily causes the air inlet to be blocked, resulting in low maintenance efficiency.

[0006] In order to achieve the above-mentioned purpose, the present invention adopts the following technical solutions: an explosion-proof gas detector, comprising a through pipe, the left and right sides of the through pipe are connected with connecting pipes, the inner walls of the connecting pipe and the through pipe are fixedly connected with a second filter plate, the top of the through pipe is connected with an air guide pipe, the inner wall of the air guide pipe is fixedly connected with an exhaust fan, the top of the air guide pipe is connected with a first air duct, the top of the first air duct is connected with a second air duct, the inner wall of the second air duct is fixedly connected with a fixing rod 1, the bottom of the fixing rod 1 is fixedly connected with a fixing column, the outer wall of the fixing column is provided with a sliding disk, the inner wall of the sliding disk is connected to the fixing column The outer wall of the second rotating rod is slidably connected to the outer wall of the sliding plate, the sliding plate is fixedly connected with a spring, the top of the sliding plate is fixedly connected to a fixing rod 2 near the edge, the top of the fixing rod 2 is rotatably connected to the second rotating rod, the rear side of the second rotating rod is rotatably connected to the guide rod, the middle of the outer wall of the second rotating rod is rotatably connected to the first rotating rod, the inner wall of the first rotating rod is rotatably connected to the rotating column, the rear side of the guide rod is fixedly connected to the slider, the outer wall of the second air duct is connected to an indicator tube, the top of the second air duct is connected to a sample box, and the rear side of the sample box is fixedly connected to a cooling device, and the cooling device is used to cool the device.

[0007] Through the above technical solution: the indicator tube is used to display the position of the slider inside it in real time, so as to judge the flow state of the gas and the pressure of the internal circulating gas; the exhaust fan is used to draw external gas into the device to assist in detection; the spring is used to help the sliding disk fit into the first air duct to close it when not in use.

[0008] As a further description of the above technical solution:

[0009] The cooling device includes a cover plate, the outer wall of the cover plate is fixedly connected to the rear side of the sample box, a micro motor is fixedly connected to the middle of the front side of the cover plate, the output end of the micro motor is fixedly connected to a rotating fan, the top of the sample box is fixedly connected to a cooling pipe, the left side of the cooling pipe is connected to a micro water pump, the output end of the micro water pump is connected to a spiral tube, and the front side of the inner wall of the sample box is fixedly connected to a first filter plate.

[0010] Through the above technical solution: the first filter plate is used to prevent the wind blown from the rotary fan containing large particles of dust from damaging the electrical components inside the sample box, and the cooling tube is used to cool the circulating liquid.

[0011] As a further description of the above technical solution:

[0012] The inner wall of the cover plate is provided with a plurality of air slots, and the right end of the spiral tube is connected with the right end of the cooling tube.

[0013] Through the above technical solution: the wind trough is used to guide and preliminarily filter the wind blowing from the cover plate.

[0014] As a further description of the above technical solution:

[0015] A controller is fixedly connected to the right side of the sample box, and the controller is electrically connected to the micro water pump, micro motor and exhaust fan respectively.

[0016] Through the above technical solution: the controller is used to control the electrical components in the device.

[0017] As a further description of the above technical solution:

[0018] The front side of the sample box is fixedly connected with a detection box, and the left side of the detection box is connected with an exhaust pipe.

[0019] According to the above technical solution, the detection box is used to detect the gas, and the exhaust pipe is used to discharge the detected gas.

[0020] As a further description of the above technical solution:

[0021] A rubber ring is fixedly connected to the outer wall of the first air duct, and the outer wall of the sliding plate is slidably connected to the inner wall of the first air duct.

[0022] Through the above technical solution: the rubber ring is used to enhance the air tightness between the first air duct and the second air duct.

[0023] As a further description of the above technical solution:

[0024] The left and right sides of the sample box are fixedly connected to the edges thereof, and the inner walls of the mounting plates are threadedly connected to screws.

[0025] Through the above technical solution: the mounting plate is used to fix the device at the position where it needs to be installed.

[0026] As a further description of the above technical solution:

[0027] A nameplate is fixedly connected to the left side of the sample box, and an observation window is fixedly connected to the outer wall of the indicator tube.

[0028] According to the above technical solution: the observation window is used to observe the position of the slider in the indicator tube.

[0029] The utility model has the following beneficial effects:

[0030] 1. In the utility model, by starting the exhaust fan, the outside air is blown into the first air duct through the air guide pipe, thereby pressing the sliding plate upward to make the compression spring slide on the fixed column, so that the air can enter the second air duct. At the same time, the second fixed rod is driven to move upward to rotate the second rotating rod, and then the guide rod drives the slider to slide in the indicator tube, thereby achieving the purpose of displaying the filter status, accelerating maintenance efficiency, improving safety and enhancing practicality.

[0031] 2. In the utility model, the liquid in the cooling tube is pumped into the spiral tube by starting the micro water pump and then sent back to the cooling tube from the other end of the spiral tube. At the same time, the micro motor is started to drive the rotary fan to rotate, so that the air passes through the cover plate, is cooled by the spiral tube, and then is filtered by the first filter plate and blown onto the internal equipment in the sample box, thereby achieving the purpose of circulating cooling, improving the adaptability of the device to the environment, and improving practicality. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 This is a front perspective view of an explosion-proof gas detector proposed by the present utility model;

[0033] Figure 2 This is a side view of an explosion-proof gas detector proposed by the utility model;

[0034] Figure 3 This is a partial structural breakdown diagram of the spiral tube of an explosion-proof gas detector proposed in the utility model;

[0035] Figure 4 This is a partial structural breakdown diagram of the air duct of an explosion-proof gas detector proposed in the present invention;

[0036] Figure 5 This is a partial structural breakdown diagram of the indicator tube of an explosion-proof gas detector proposed in the utility model.

[0037] Legend:

[0038] 1. Through pipe; 2. Cooling device; 201. Cooling pipe; 202. Mini water pump; 203. First filter plate; 204. Spiral tube; 205. Rotating fan; 206. Mini motor; 207. Cover plate; 3. Sample box; 4. Connecting pipe; 5. Second filter plate; 6. First air duct; 7. Rubber ring; 8. Second air duct; 9. Air guide duct; 10. Exhaust fan; 11. Fixed rod 1; 12. Rotating column; 13. First rotating rod; 14. Guide rod; 15. Slider; 16. Indicator tube; 17. Observation window; 18. Second rotating rod; 19. Fixed rod 2; 20. Spring; 21. Fixed column; 22. Sliding plate; 23. Exhaust pipe; 24. Mounting plate; 25. Air trough; 26. Screw; 27. Nameplate; 28. Detection box; 29. ​​Controller. DETAILED DESCRIPTION

[0039] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0040] Please see the attached Figure 1 - Attachment Figure 3 The utility model provides an embodiment of an explosion-proof gas detector, comprising a through pipe 1, the left and right sides of the through pipe 1 are connected with connecting pipes 4, the connecting pipes 4 and the inner walls of the through pipe 1 are fixedly connected with a second filter plate 5, the second filter plate 5 is used to prevent the gas to be detected from entering the device and causing damage to the device due to large particles of dust, the top of the through pipe 1 is connected with an air guide pipe 9, the inner wall of the air guide pipe 9 is fixedly connected with an exhaust fan 10, the top of the air guide pipe 9 is connected with a first air duct 6, and the top of the first air duct 6 is connected with a second air duct 8, The multiple pipes are connected so that the gas to be detected can smoothly enter the interior of the device. The inner wall of the second air duct 8 is fixedly connected to a fixed rod 11, and the bottom of the fixed rod 11 is fixedly connected to a fixed column 21. The outer wall of the fixed column 21 is provided with a sliding disk 22. The inner wall of the sliding disk 22 is slidably connected to the outer wall of the fixed column 21. The sliding disk 22 can open and close the first air duct 6 by sliding with the outer wall of the fixed column 21. The sliding disk 22 is fixedly connected to a spring 20. The top of the sliding disk 22 is fixedly connected to the fixed rod 1 near the edge. 9, the top of the second fixed rod 19 is rotatably connected to the second rotating rod 18, and the spring 20 is used to help the sliding plate 22 to reset when there is no gas extrusion. The rear side of the second rotating rod 18 is rotatably connected to the guide rod 14, and the middle part of the outer wall of the second rotating rod 18 is rotatably connected to the first rotating rod 13, and the inner wall of the first rotating rod 13 is rotatably connected to the rotating column 12. The upward movement of the second fixed rod 19 can drive the rotation of the second rotating rod 18 and thus move the guide rod 14. The rear side of the guide rod 14 is fixedly connected to the slider 15, and the second The outer wall of the air duct 8 is connected to an indicator tube 16, and the top of the second air duct 8 is connected to the sample box 3. The indicator tube 16 is used to display the position of the slider 15 and guide the direction of movement of the guide rod 14. The rear side of the sample box 3 is fixedly connected to a cooling device 2, which is used to cool the device. The right side of the sample box 3 is fixedly connected to a controller 29. The controller 29 is electrically connected to the micro water pump 202, the micro motor 206 and the exhaust fan 10 respectively. The controller 29 is used to realize intelligent control and data processing of the entire detector;

[0041] Specifically, the controller 29 can accurately control and adjust all electrical components of the device. The indicator tube 16 is used to display the position of the slider 15 therein in real time, so as to judge the flow state of the gas and the pressure of the internal circulating gas, and then judge whether the second filter plate 5 is blocked. The second filter plate 5 is used to filter the gas entering the device to prevent dust and larger particles in the air from entering the device and causing damage to it. The exhaust fan 10 is used to guide the gas flow. The sliding disk 22 can slide on the outer wall of the fixed column 21 and be slidably connected to the inner wall of the first air duct 6, so that it can open and close the first air duct 6. The spring 20 can help the sliding disk 22 to reset.

[0042] Please see the attached Figure 3 - Attachment Figure 5 The cooling device 2 includes a cover plate 207, the outer wall of the cover plate 207 is fixedly connected to the rear side of the sample box 3, the middle part of the front side of the cover plate 207 is fixedly connected to a micro motor 206, the output end of the micro motor 206 is fixedly connected to a rotary fan 205, the micro motor 206 is used to drive the rotary fan 205 to rotate so as to blow wind toward the sample box 3, the top of the sample box 3 is fixedly connected to a cooling pipe 201, the left side of the cooling pipe 201 is connected to a micro water pump 202, the output end of the micro water pump 202 is connected to a spiral tube 204, the front side of the inner wall of the sample box 3 is fixedly connected to a first filter plate 203, the micro water pump 202 is used to help the circulation of the cooling liquid, the inner wall of the cover plate 207 is opened with a plurality of wind slots 25, the right end of the spiral tube 204 is connected to the right end of the cooling pipe 201, and the spiral tube 204 is used to cool the wind blown by the rotary fan 205;

[0043] Specifically, the wind trough 25 can effectively accelerate and guide the air flow, thereby improving the cooling efficiency. The spiral tube 204 can cool the wind blown to it by the rotary fan 205. The first filter plate 203 is used to prevent the wind blown in by the rotary fan 205 from containing dust and causing clogging of the device. The cover plate 207 is a device for protecting the rear side of the sample box 3. The cooling tube 201 can cool the liquid circulated from the spiral tube 204 into it.

[0044] Please see the attached Figure 2 - Attachment Figure 4, the outer wall of the first air duct 6 is fixedly connected with a rubber ring 7, the outer wall of the sliding plate 22 is slidably connected to the inner wall of the first air duct 6, the function of the rubber ring 7 is to ensure the sealing between the first air duct 6 and other components, the front side of the sample box 3 is fixedly connected with a detection box 28, the left side of the detection box 28 is connected with an exhaust pipe 23, the function of the exhaust pipe 23 is to discharge the exhaust gas after detection, the left side of the sample box 3 is fixedly connected with a nameplate 27, the outer wall of the indicator tube 16 is fixedly connected with an observation window 17, the observation window 17 allows the user to directly observe the situation inside the indicator tube 16, the left and right sides of the sample box 3 are fixedly connected near the edge with a mounting plate 24, the inner wall of the mounting plate 24 is threaded with a screw 26, and the mounting plate 24 is used to install the device in the required position;

[0045] Specifically, the design of the observation window 17 allows the user to directly observe the situation inside the indicator tube 16. The main function of the detection box 28 is to monitor and analyze the samples in the sample box 3 in real time. The model and production date of the device will be marked on the nameplate 27 to facilitate user identification and management. The model of the micro water pump 202 is WKA1300, the model of the micro motor 206 is ZWPD006006, and the model of the exhaust fan 10 is SF-300.

[0046] Working principle: When inspecting explosion-proof gas, first start the exhaust fan 10 to draw the air around the through pipe 1 and the connecting pipe 4 into the air guide pipe 9 after being filtered by the second filter plate 5, and then flow upward through the air guide pipe 9 to reach the first air duct 6, and push open the sliding plate 22, so that the sliding plate 22 squeezes the spring 20 upward to compress it, and then the sliding plate 22 slides upward along the fixed column 21, so that the gas enters the second air duct 8 and flows into the sample box 3. At the same time, the upward movement of the sliding plate 22 drives the fixed rod 19 to move upward, and then the first rotating rod 13 rotates to drive the guide rod 14 to move backward along the inner wall of the indicator tube 16, and the second rotating rod 18 is kept limited by the rotation of the first rotating rod 13 on the rotating column 12. The position of the slider 15 is observed through the observation window 17 on the outer wall of the indicator tube 16 to determine whether the equipment needs to be cleaned.

[0047] When the equipment is working in a high temperature environment or for a long time, the micro water pump 202 is started to draw the liquid in the cooling tube 201 into the spiral tube 204, and at the same time, the liquid in the spiral tube 204 is squeezed into the cooling tube 201 for cooling. Then the micro motor 206 is turned on to drive the rotary fan 205 to rotate, so that the air is blown to the spiral tube 204 through the cover plate 207 for cooling, and then filtered by the first filter plate 203 and blown to the equipment in the sample box 3.

[0048] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent replacements for some of the technical features therein. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. An explosion-proof gas detector, comprising a through pipe (1), characterized in that: The left and right sides of the through pipe (1) are both connected with connecting pipes (4), and the inner walls of the connecting pipe (4) and the through pipe (1) are fixedly connected with a second filter plate (5), the top of the through pipe (1) is connected with an air guide pipe (9), the inner wall of the air guide pipe (9) is fixedly connected with an exhaust fan (10), the top of the air guide pipe (9) is connected with a first air pipe (6), the top of the first air pipe (6) is connected with a second air pipe (8), the inner wall of the second air pipe (8) is fixedly connected with a fixing rod (11), the bottom of the fixing rod (11) is fixedly connected with a fixing column (21), the outer wall of the fixing column (21) is provided with a sliding plate (22), the inner wall of the sliding plate (22) is slidably connected to the outer wall of the fixing column (21), and the fixed connection of the sliding plate (22) is The spring (20) is fixedly connected to a second fixed rod (19) near the edge of the top of the sliding plate (22), the top of the second fixed rod (19) is rotatably connected to the second rotating rod (18), the rear side of the second rotating rod (18) is rotatably connected to the guide rod (14), the middle part of the outer wall of the second rotating rod (18) is rotatably connected to the first rotating rod (13), the inner wall of the first rotating rod (13) is rotatably connected to the rotating column (12), the rear side of the guide rod (14) is fixedly connected to the slider (15), the outer wall of the second air duct (8) is connected to the indicator tube (16), the top of the second air duct (8) is connected to the sample box (3), the rear side of the sample box (3) is fixedly connected to a cooling device (2), and the cooling device (2) is used to cool the device.

2. An explosion-proof gas detector according to claim 1, characterized in that: The cooling device (2) comprises a cover plate (207), the outer wall of the cover plate (207) is fixedly connected to the rear side of the sample box (3), a micro motor (206) is fixedly connected to the middle of the front side of the cover plate (207), the output end of the micro motor (206) is fixedly connected to a rotating fan (205), the top of the sample box (3) is fixedly connected to a cooling pipe (201), the left side of the cooling pipe (201) is connected to a micro water pump (202), the output end of the micro water pump (202) is connected to a spiral tube (204), and the front side of the inner wall of the sample box (3) is fixedly connected to a first filter plate (203).

3. An explosion-proof gas detector according to claim 2, characterized in that: The inner wall of the cover plate (207) is provided with a plurality of air slots (25), and the right end of the spiral tube (204) is connected to the right end of the cooling tube (201).

4. The explosion-proof gas detector according to claim 1, characterized in that: A controller (29) is fixedly connected to the right side of the sample box (3), and the controller (29) is electrically connected to the micro water pump (202), the micro motor (206) and the exhaust fan (10) respectively.

5. The explosion-proof gas detector according to claim 1, characterized in that: A detection box (28) is fixedly connected to the front side of the sample box (3), and the left side of the detection box (28) is connected to an exhaust pipe (23).

6. The explosion-proof gas detector according to claim 1, characterized in that: The outer wall of the first air duct (6) is fixedly connected to a rubber ring (7), and the outer wall of the sliding plate (22) is slidably connected to the inner wall of the first air duct (6).

7. The explosion-proof gas detector according to claim 1, characterized in that: The left and right sides of the sample box (3) are fixedly connected to mounting plates (24) near the edges, and the inner wall of the mounting plate (24) is threadedly connected to screws (26).

8. The explosion-proof gas detector according to claim 1, characterized in that: A nameplate (27) is fixedly connected to the left side of the sample box (3), and an observation window (17) is fixedly connected to the outer wall of the indicator tube (16).

Images