Hydrogen fluoride leakage detection device

Abstract

The utility model relates to the technical field of gas detection, and discloses a hydrogen fluoride leakage detection device which comprises a box body, an alarm lamp and a buzzer are arranged on the side wall of the box body, a detection cavity is formed in the box body, a detection laser light source and a receiver are arranged on the inner wall of the detection cavity, and the detection laser light source and the receiver are arranged on the inner wall of the detection cavity. Filtering assemblies are arranged at the two ends of the detection cavity, each filtering assembly comprises a filtering net, the filtering nets are fixedly connected to the ends of the detection cavity, a motor is fixedly connected to one side of each filtering net, and an output shaft of each motor penetrates through and is rotationally connected to the other side of the corresponding filtering net. According to the hydrogen fluoride leakage detection device, dust is intercepted through a filter screen, stable pressure is provided for one side of a pressing plate through a reset spring, so that the other side of the pressing plate is close to the side wall of the filter screen, cleaning cotton and the filter screen are tightly attached, the cleaning cotton is positioned through four sets of protruding strips, the cleaning cotton and the pressing plate synchronously rotate, the filter screen does not need to be manually disassembled, and the working efficiency is improved. The maintenance frequency is reduced.

Description

Technical Field

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

[0002] Occupational hazards refer to all elements or conditions that arise or exist in the production and labor process and its environment, and may adversely affect the health, safety, and work ability of the working population. Workplace occupational hazards refer to various harmful factors that workers may encounter in the workplace during their occupational activities, such as dust, chemical toxins, physical factors, and biological factors, which may lead to occupational diseases. Therefore, various testing equipment is needed in the process of monitoring the work environment. Hydrogen fluoride gas is generated during the smelting and production of fluorine-containing minerals. Hydrogen fluoride gas is a binary compound composed of fluorine and hydrogen elements; it is a colorless gas with a pungent odor. If hydrogen fluoride gas leaks during the operation, it will pollute the air and harm the human body.

[0003] According to a published application for a hydrogen fluoride gas leak detection device (publication number: CN218885728U), under the control of the controller, the motors at the inlet and outlet drive the rotating shafts to rotate in different directions. When no leaking hydrogen fluoride gas is detected, the fan blades at the inlet rotate clockwise under the drive of the motor, and the fan blades at the outlet rotate counterclockwise under the drive of the motor. This generates a suction force at the inlet against the outside of the housing, and a suction force at the outlet against the inside of the detection chamber. As the gas is drawn into the detection chamber from the inlet, it is then drawn out of the chamber by the suction of the outlet. When the monitored gas detects leaked hydrogen fluoride, the fan blades at the outlet will rotate clockwise under the drive of the motor, thus generating suction on the outside of the chamber. Under the combined suction of the inlet and outlet, the gas will gather inside the detection chamber. Then, under the control of the controller, the first one-way valve will be activated, and the gas will flow into the processing chamber for treatment.

[0004] However, during use, dust in the gas enters the detection chamber along with the gas, which can easily block the laser beam, leading to signal attenuation or misjudgment. Utility Model Content

[0005] The purpose of this invention is to provide a hydrogen fluoride gas leak 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 hydrogen fluoride leak detection device, comprising a housing, an alarm light and a buzzer installed on the side wall of the housing, a detection chamber installed inside the housing, a detection laser light source and a receiver installed on the inner wall of the detection chamber, filter assemblies installed at both ends of the detection chamber, each filter assembly comprising a filter screen, the filter screen being fixedly connected to the end of the detection chamber, a motor being fixedly connected to one side of the filter screen, the output shaft of the motor passing through and rotatably connected to the other side of the filter screen, a connecting shaft being fixedly connected to the output shaft of the motor, a fan being fixedly connected to the end of the connecting shaft, a through groove being opened on the side wall of the connecting shaft, and a pressure plate being slidably connected inside the through groove.

[0007] Preferably, a protective component is fixedly connected to the side wall of the filter screen. The filter screen includes a connecting seat, which is fixedly connected to the side wall of the filter screen. A slot is provided on the surface of the connecting seat, and a plug is inserted into the slot. A ring is fixedly connected to the side wall of the plug.

[0008] Preferably, the outer wall of the ring is provided with a ash discharge groove.

[0009] Preferably, the sidewall of the ring is fixedly connected to multiple sets of arrayed protective railings.

[0010] Preferably, the side wall of the pressure plate has a through hole, and a guide rod is slidably connected in the through hole. The end of the guide rod is fixedly connected to the inner wall of the through groove, and the pressure plate and the inner wall of the through groove are elastically connected by a return spring.

[0011] Preferably, the side wall of the pressure plate is fixedly connected with four sets of protruding strips, and cleaning cotton is inserted between the four sets of protruding strips.

[0012] Compared with the prior art, the present invention provides a hydrogen fluoride leak detection device, which has the following beneficial effects:

[0013] 1. This hydrogen fluoride leak detection device uses a filter screen to intercept dust. A return spring provides stable pressure to one side of the pressure plate, causing the other side of the pressure plate to press against the side wall of the filter screen. The cleaning cotton adheres tightly to the filter screen, and four sets of protruding strips position the cleaning cotton, allowing it to rotate synchronously with the pressure plate. This provides a cleaning effect to the filter screen, maintaining its filtration efficiency without requiring manual removal of the filter screen, reducing maintenance frequency. Furthermore, by moving the pressure plate away from the filter screen, the return spring compresses, allowing the cleaning cotton to be removed from the four sets of protruding strips and replaced with a new one.

[0014] 2. This hydrogen fluoride leak detection device features a ring that connects to the connecting seat via inserts on both sides, facilitating installation on the side wall of the filter screen. The ring can also be easily disassembled by moving it upwards. A protective railing prevents operators or maintenance personnel from accidentally touching the high-speed rotating fan, thus avoiding scratches or entanglement accidents. Dust cleaned from the filter screen surface is discharged through a dust discharge trough, preventing accumulation inside the ring. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0016] Figure 2 This is a schematic diagram of the opening structure of the detection cavity of this utility model;

[0017] Figure 3 This is a schematic diagram of the filter assembly structure of this utility model;

[0018] Figure 4 This is a schematic diagram of the protective component structure of this utility model.

[0019] In the diagram: 1. Housing; 11. Alarm light; 12. Buzzer; 2. Detection chamber; 21. Detection laser light source; 22. Receiver; 3. Filter assembly; 31. Filter screen; 32. Motor; 33. Connecting shaft; 34. Fan; 35. Through groove; 36. Pressure plate; 37. Guide rod; 38. Return spring; 39. Protruding strip; 310. Cleaning cotton; 4. Protective assembly; 41. Connecting seat; 42. Slot; 43. Insert block; 44. Ring; 45. Ash discharge chute; 46. Protective railing. Detailed Implementation

[0020] like Figures 1-4 As shown, this utility model provides a technical solution: a hydrogen fluoride leak detection device, including a housing 1, an alarm light 11 and a buzzer 12 installed on the side wall of the housing 1, a detection chamber 2 installed inside the housing 1, a detection laser light source 21 and a receiver 22 installed on the inner wall of the detection chamber 2, the housing 1 serving as the main outer shell, the alarm light 11 and buzzer 12 integrated on the side wall for audible and visual alarm in case of leak, a filter assembly 3 installed at both ends of the detection chamber 2, the filter assembly 3 including a filter screen 31, the filter screen 31 fixedly connected to the end of the detection chamber 2, the detection chamber 2 forming an independent detection space, the filter assembly 3 installed on both sides to ensure that the gas entering the chamber is filtered first, reducing the interference of dust in the gas on the detection laser light source 21. A motor 32 is fixedly connected to one side of the filter screen 31. The output shaft of the motor 32 passes through and is rotatably connected to the other side of the filter screen 31. A connecting shaft 33 is fixedly connected to the output shaft of the motor 32. A fan 34 is fixedly connected to the end of the connecting shaft 33. The motor 32 drives the connecting shaft 33 and the fan 34 to rotate, generating airflow suction to draw external gas into the detection chamber 2 or expel it from the detection chamber 2.

[0021] like Figures 1-4 As shown, a through groove 35 is provided on the side wall of the connecting shaft 33. A pressure plate 36 is slidably connected inside the through groove 35. A through hole is provided on the side wall of the pressure plate 36, and a guide rod 37 is slidably connected in the through hole. The end of the guide rod 37 is fixedly connected to the inner wall of the through groove 35. The guide rod 37 is used to position the pressure plate 36 so that the connecting shaft 33 can drive the pressure plate 36 to rotate stably. The pressure plate 36 and the inner wall of the through groove 35 are elastically connected by a return spring 38. Four sets of protrusions 39 are fixedly connected to the side wall of the pressure plate 36, and a cleaning cotton 310 is inserted between the four sets of protrusions 39. The return spring 38 provides stable pressure on one side of the pressure plate 36, causing the other side of the pressure plate 36 to approach the side wall of the filter screen 31. This ensures that the cleaning cotton 310 and the filter screen 31 are in close contact. The cleaning cotton 310 is positioned by four sets of protrusions 39, allowing it to rotate synchronously with the pressure plate 36. This provides a cleaning effect to the filter screen 31, maintaining its filtration efficiency without requiring manual disassembly, thus reducing maintenance frequency. Furthermore, by moving the pressure plate 36 away from the filter screen 31, the return spring 38 is compressed, allowing the cleaning cotton 310 to be removed from the four sets of protrusions 39 and replaced with a new one.

[0022] like Figures 1-4 As shown, a protective component 4 is fixedly connected to the side wall of the filter screen 31. The filter screen 31 includes a connecting seat 41, which is fixedly connected to the side wall of the filter screen 31. A slot 42 is provided on the surface of the connecting seat 41, and a plug 43 is inserted into the slot 42. A ring 44 is fixedly connected to the side wall of the plug 43. The ring 44 is easily installed on the side wall of the filter screen 31 by inserting the plugs 43 on both sides into the connecting seat 41. At the same time, the ring 44 can be easily removed by moving it upwards. A dust discharge groove 45 is provided on the outer wall of the ring 44. The dust discharge groove 45 is used to discharge the dust cleaned from the surface of the filter screen 31 and prevent it from accumulating inside the ring 44. Multiple sets of arrayed protective railings 46 are fixedly connected to the side wall of the ring 44. The protective railings 46 can prevent operators or maintenance personnel from accidentally touching the high-speed rotating fan 34, causing scratches or being caught in the air.

[0023] In this invention, during use, the housing 1 is installed in the area where hydrogen fluoride gas needs to be detected, ensuring the air inlet faces the gas flow direction. The power is turned on, and the controller starts the motor 32, driving the connecting shaft 33 and fan 34 to rotate clockwise, generating suction. When external gas passes through the filter 31, dust and particles are intercepted, and clean gas enters the detection chamber 2. The detection laser source 21 emits a specific wavelength laser beam, which penetrates the gas in the detection chamber 2 and is projected onto the receiver 22. The receiver 22 calculates the hydrogen fluoride concentration based on the light intensity attenuation and the Lambert-Beer law, and transmits the data to the controller. If the concentration is below the threshold, the gas is discharged from the housing 1 through the fan 34 of the filter assembly 3 on the other side. The alarm light 11 and buzzer 12 remain silent. When the controller determines that the hydrogen fluoride concentration exceeds the preset threshold, it immediately triggers the alarm light 11 to flash and the buzzer 12 to sound, alerting on-site personnel to the leak.

[0024] During the filtration process of filter screen 31, the return spring 38 provides stable pressure on one side of the pressure plate 36, causing the other side of the pressure plate 36 to approach the side wall of filter screen 31. The cleaning cotton 310 maintains a tight fit with filter screen 31, and is positioned by four sets of protrusions 39, allowing the cleaning cotton 310 and pressure plate 36 to rotate synchronously, thereby providing a cleaning effect to filter screen 31 and maintaining its filtration effect. This eliminates the need for manual disassembly of filter screen 31, reducing maintenance frequency. Furthermore, by moving the pressure plate 36 away from filter screen 31, the return spring 38 is compressed, allowing the cleaning cotton 310 to be removed from the four sets of protrusions 39 and replaced with a new one.

[0025] The ring 44 is connected to the connecting seat 41 by the inserts 43 on both sides, which makes it easy to install on the side wall of the filter screen 31. At the same time, the ring 44 can be easily disassembled by moving it upward. The guardrail 46 can prevent operators or maintenance personnel from accidentally touching the high-speed rotating fan 34, causing scratches or being caught in the fan. The dust cleaned on the surface of the filter screen 31 is discharged through the dust discharge trough 45 to prevent it from accumulating inside the ring 44.

[0026] The present invention has been described in detail above. However, modifications or improvements can be made to it, which will be obvious to those skilled in the art. Therefore, any modifications or improvements that do not depart from the spirit of the present invention are within the protection scope of the present invention.

Claims

1. A hydrogen fluoride leak detection device, comprising a housing (1), characterized in that: An alarm light (11) and a buzzer (12) are provided on the side wall of the housing (1). A detection chamber (2) is provided inside the housing (1). A detection laser light source (21) and a receiver (22) are provided on the inner wall of the detection chamber (2). A filter assembly (3) is provided at both ends of the detection chamber (2). The filter assembly (3) includes a filter screen (31). The filter screen (31) is fixedly connected to the end of the detection chamber (2). A motor (32) is fixedly connected to one side of the filter screen (31). The output shaft of the motor (32) passes through and is rotatably connected to the other side of the filter screen (31). A connecting shaft (33) is fixedly connected to the output shaft of the motor (32). A fan (34) is fixedly connected to the end of the connecting shaft (33). A through groove (35) is opened on the side wall of the connecting shaft (33). A pressure plate (36) is slidably connected inside the through groove (35).

2. The hydrogen fluoride leak detection device according to claim 1, characterized in that: The filter screen (31) has a protective component (4) fixedly connected to its side wall. The filter screen (31) includes a connecting seat (41), which is fixedly connected to the side wall of the filter screen (31). The surface of the connecting seat (41) has a slot (42), and a plug (43) is inserted into the slot (42). A ring (44) is fixedly connected to the side wall of the plug (43).

3. The hydrogen fluoride leak detection device according to claim 2, characterized in that: The outer wall of the ring (44) is provided with a ash discharge groove (45).

4. The hydrogen fluoride leak detection device according to claim 2, characterized in that: The side wall of the ring (44) is fixedly connected to a plurality of arrayed protective railings (46).

5. The hydrogen fluoride leak detection device according to claim 1, characterized in that: The side wall of the pressure plate (36) has a through hole, and a guide rod (37) is slidably connected in the through hole. The end of the guide rod (37) is fixedly connected to the inner wall of the through groove (35). The pressure plate (36) and the inner wall of the through groove (35) are elastically connected by a return spring (38).

6. The hydrogen fluoride leak detection device according to claim 1, characterized in that: The side wall of the pressure plate (36) is fixedly connected with four sets of protruding strips (39), and cleaning cotton (310) is inserted between the four sets of protruding strips (39).

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