Four-in-one explosion-proof gas sensor

Abstract

The invention discloses a four-in-one explosion-proof gas sensor, and relates to the field of gas sensors, the four-in-one explosion-proof gas sensor comprises a sensor shell, a sensor module is installed in the sensor shell, four gas sensors are installed in the sensor module, and a gas circulation hole is formed in the sensor shell; a filtering mechanism corresponding to the gas circulation hole is arranged in the sensor shell, and a dehumidifying mechanism corresponding to the gas circulation hole is arranged in the sensor shell. When outside air enters the sensor shell from the gas circulation hole of the sensor shell, the air passes through the filtering mechanism, the filtering mechanism blocks dust floating flocks and the like carried in the air, and then the air passes through the dehumidifying mechanism and finally is in contact with the sensor module in the sensor shell. Therefore, the possibility that the dust floating wadding entrained in the air enters the sensor shell and is directly attached to the surface of the sensor module to influence the normal work of the sensor module can be reduced.

Description

Technical Field

[0001] The present application relates to the field of gas sensors, and in particular to a four-in-one explosion-proof gas sensor. Background Art

[0002] The four-in-one explosion-proof gas sensor adopts an intrinsically safe explosion-proof design, integrating four gas sensors, a lithium battery, a power switch, a status display screen, an audible and visual alarm, a LoRa wireless transmission module and an antenna. It supports the detection of combustible gases, oxygen, carbon monoxide, and hydrogen sulfide by default, supports sound warnings for excessive concentrations of the four gases, supports docking with explosion-proof control balls via wireless communication, and promptly reports the status of flammable, explosive and harmful gases in the environment. It can be used for hot work operations such as petrochemical natural gas, confined space operations, blind plate plugging operations, etc.

[0003] When the gas sensor is working, it is first installed directly in the working environment. The air in the environment will directly enter the outer shell from the connecting hole on the gas sensor, and then come into contact with the four gas sensors in the outer shell. The gas sensor detects the gas composition in the air. When it is detected that the gas composition exceeds the standard, the alarm is used in time.

[0004] When the gas sensor is installed in a working environment, the air in the working environment may contain dust and lint, which will directly enter the gas sensor with the air. Long-term use may cause dust and lint to adhere to the circuit board and sensor head of the gas sensor, affecting the normal operation of the gas sensor. Summary of the invention

[0005] The purpose of the present application is to solve the problem raised in the above background technology that the air in the working environment may contain dust and lint, and these dust and lint will directly enter the gas sensor with the air. Long-term use may cause dust and lint to adhere to the circuit board and sensor head of the gas sensor, affecting the normal operation of the gas sensor. The present application provides a four-in-one explosion-proof gas sensor.

[0006] In order to achieve the above-mentioned purpose, this application specifically adopts the following technical solutions: A four-in-one explosion-proof gas sensor comprises a sensor housing, a sensor module is installed in the sensor housing, four gas sensors are installed in the sensor module, a signal transmission antenna is installed on the sensor housing, a switch is installed on one side of the sensor housing, a status display screen is installed on one side of the sensor housing, an audible and visual alarm module is installed on the top of the sensor housing, a gas circulation hole is opened on the sensor housing, a filtering mechanism corresponding to the gas circulation hole is arranged in the sensor housing, and a dehumidification mechanism corresponding to the gas circulation hole is arranged in the sensor housing.

[0007] By adopting the above technical scheme, when the outside air enters the sensor housing from the gas circulation hole of the sensor housing, the air passes through the filtering mechanism, which blocks the dust and fluff in the air. Then the air passes through the dehumidification mechanism and finally contacts the sensor module in the sensor housing, thereby reducing the dust and fluff in the air from entering the sensor housing. The possibility that the dust and fluff directly adhere to the surface of the sensor module and affect the normal operation of the sensor module can be reduced. At the same time, the possibility that humid air enters the sensor housing can be reduced, thereby reducing the possibility that the sensor module in the sensor housing is affected by moisture and affects the normal operation.

[0008] Furthermore, the filtering mechanism comprises a filtering channel fixed on the inner side of the sensor housing, a supporting frame is fixed in the filtering channel, a filtering plate is fixed on the supporting frame, a scraping component is arranged in the filtering channel, and a vibration component is arranged in the filtering channel.

[0009] By adopting the above technical solution, the air contacts the filter plate on the support frame, and then passes through the filter plate. The filter plate blocks the dust particles entrained in the air, and then the scraping component is periodically moved on the filter plate to block the dust particles blocked by the filter plate. At the same time, the scraping component drives the vibration component to make the dust particles on the filter plate fall off faster, thereby reducing the possibility that the dust particles in the air enter the sensor housing, accumulate on the sensor module for a long time, and affect the normal operation of the sensor module.

[0010] Furthermore, the scraping assembly comprises a scraping plate arranged on the filter plate, the scraping plate is in conflict with the filter plate, a support ring is fixed on the scraping plate, and a reciprocating member is arranged between the support ring and the filter channel.

[0011] By adopting the above technical solution, the reciprocating member is used to drive the support ring to move back and forth, and then the support ring drives the scraper plate, and the scraper plate scrapes the dust and fluff on the filter plate, thereby reducing the scraping of dust and fluff filtered on the filter plate and reducing the obstruction of the filter plate by dust and fluff.

[0012] Furthermore, the reciprocating member includes a reciprocating threaded rod rotatably connected in the filter channel, one end of the reciprocating threaded rod passes through the filter channel and is fixed with gear 1, gear 2 is meshed on gear 1, a drive motor is fixed on the filter channel, and the output end of the drive motor is fixedly connected to gear 2.

[0013] By adopting the above technical solution, a driving motor is used to drive gear two to rotate, gear two drives gear one to rotate, gear one drives the reciprocating threaded rod, and the reciprocating threaded rod drives the support ring to move back and forth, so that the support ring can easily drive the scraping plate to move back and forth, thereby facilitating the scraping of dust and fluff on the filter plate.

[0014] Furthermore, a cleaning port is provided on the sensor housing, and a rubber strip is plugged in the cleaning port.

[0015] By adopting the above technical solution, the rubber strip on the cleaning port is directly removed, and then a thin wooden stick is inserted into the cleaning port to pick out the dust and fluff in the filter channel, and then the rubber strip is reinserted into the cleaning port, thereby making it convenient to clean the scraped dust and fluff, while reducing the possibility of dust and fluff floating randomly.

[0016] Furthermore, the vibration component includes a plurality of knocking heads that are symmetrical in pairs, and the plurality of knocking heads are located on a side of the filter plate away from the scraper plate. A spring sheet is fixed on the knocking head, and a synchronization component is arranged between the spring sheet and the filter channel.

[0017] By adopting the above technical solution, gear 2 drives the synchronous part, the synchronous part drives the spring sheet, the spring sheet drives the knocking head, and the knocking head knocks the filter plate, so that the scraping plate can scrape the dust and fluff on the filter plate more easily, thereby further reducing the possibility of dust and fluff clogging the filter plate.

[0018] Furthermore, the synchronization component includes a synchronization gear meshingly connected to the gear 2, a support rod is fixed on the synchronization gear, the support rod passes through the filter channel and is rotationally connected to the filter channel, and the support rod is fixedly connected to the spring sheet.

[0019] By adopting the above technical solution, when the driving motor drives gear two, and gear two drives gear one to rotate, gear two drives the synchronous gear, and the synchronous gear drives the support rod, it is convenient for the scraping plate to scrape the dust and fluff on the filter plate while the knocking head knocks the filter plate.

[0020] Furthermore, the dehumidification mechanism includes a dehumidification box fixed on the filter channel, the dehumidification box is provided with evenly distributed dehumidification holes, the dehumidification box is filled with dehumidification particles, the dehumidification particles are located in the silica gel dehumidification particles, a drive shaft is rotatably connected inside the dehumidification box, a plurality of evenly distributed stirring rods are fixed on the drive shaft, a stirring motor is fixed at one end of the dehumidification box, and the output end of the stirring motor passes through the dehumidification box and is fixedly connected to the drive shaft.

[0021] By adopting the above technical solution, the outside air comes into contact with the silica gel dehumidification particles filled in the dehumidification box, the silica gel dehumidification particles absorb moisture in the air, and the stirring motor is started regularly to allow the stirring rod to stir the dehumidification particles in the dehumidification box, thereby reducing the possibility of the outside air entering the sensor housing being too humid and affecting the normal operation of the sensor module.

[0022] In summary, the present application includes at least one of the following beneficial effects: 1. In the present application, when the outside air enters from the gas circulation hole of the sensor housing, the air contacts the filter plate on the support frame, and then the air passes through the filter plate, the filter plate blocks the dust and fluff in the air, and starts the driving motor regularly, the driving motor drives gear 2 to rotate, gear 2 drives gear 1 to rotate, gear 1 drives the reciprocating threaded rod, the reciprocating threaded rod drives the supporting ring to move back and forth, so that the supporting ring drives the scraping plate to move back and forth on the filter plate, and the scraping plate scrapes the dust and fluff on the filter plate, and at the same time, gear 2 drives the synchronous gear, the synchronous gear drives the supporting rod, and the supporting rod rotates under the support of the filter channel, and then the supporting rod drives the spring sheet, and the spring sheet drives the knocking head to knock the filter plate, so that the dust and fluff falls from the filter plate, thereby reducing the dust and fluff in the air from entering the sensor housing, and the dust and fluff directly adheres to the surface of the sensor module, affecting the normal operation of the sensor module, and at the same time, the dust and fluff on the filter plate can be removed to reduce the dust and fluff adhering to the filter plate and affecting the purpose of air passing through the filter plate.

[0023] 2. In the present application, after the outside air passes through the filter plate, the outside air directly enters the dehumidification box, and the outside air contacts with the silica gel dehumidification particles filled in the dehumidification box. The silica gel dehumidification particles absorb the moisture in the air, and then the air enters the sensor housing. Then, the stirring motor is started regularly to drive the driving shaft, and the driving shaft drives the stirring rod, so that the stirring rod stirs the dehumidification particles in the dehumidification box to move the filled silica gel dehumidification particles, thereby reducing the possibility of uneven moisture absorption of the silica gel dehumidification particles, thereby achieving the purpose of reducing the possibility of excessive humidity of the air entering the sensor housing from the outside and affecting the normal operation of the sensor module.

[0024] 3. In the present application, when the driving motor drives gear 2, gear 2 drives the synchronous part, the synchronous part drives the spring sheet, the spring sheet drives the knocking head, and the knocking head knocks the filter plate, so that the dust fluff on the filter plate falls off faster, thereby achieving the purpose of making it easier for the scraping plate to scrape off the dust fluff on the filter plate, thereby further reducing the clogging of the filter plate by dust fluff. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1is a first three-dimensional structural schematic diagram of the gas sensor in this application; Figure 2 is a second three-dimensional structural schematic diagram of the gas sensor in this application; Figure 3 It is a first three-dimensional structural schematic diagram of the filtering mechanism in the present application; Figure 4 It is a second three-dimensional schematic diagram of the filtering mechanism in the present application; Figure 5 This application Figure 3 Enlarged schematic diagram at point A in the middle.

[0026] Description of reference numerals: 1. Sensor housing; 2. Signal transmission antenna; 3. Sensor module; 4. Sound and light alarm module; 5. Switch; 6. Status display screen; 7. Filter mechanism; 71. Filter channel; 72. Support frame; 73. Filter plate; 74. Scraping assembly; 741. Scraping plate; 742. Support ring; 743. Reciprocating member; 7431. Reciprocating threaded rod; 7432. Gear 1; 7433. Gear 2; 7434. Drive motor; 744. Rubber strip; 75. Vibration assembly; 751. Knocking head; 752. Spring sheet; 753. Synchronous assembly; 7531. Synchronous gear; 7532. Support rod; 8. Dehumidification mechanism; 81. Dehumidification box; 82. Stirring motor; 83. Stirring rod; 84. Drive shaft; 9. Gas flow hole. DETAILED DESCRIPTION

[0027] The following is combined with Figure 1 —5 Provide further details of this application.

[0028] The embodiments of the present application disclose a four-in-one explosion-proof gas sensor.

[0029] Reference Figure 1 , Figure 2 and Figure 3 The four-in-one explosion-proof gas sensor comprises a sensor housing 1, a sensor module 3 is installed in the sensor housing 1, four gas sensors are installed in the sensor module 3, a signal transmission antenna 2 is installed on the sensor housing 1, a switch 5 is installed on one side of the sensor housing 1, a status display screen 6 is installed on one side of the sensor housing 1, a sound and light alarm module 4 is installed on the top of the sensor housing 1, a gas flow hole 9 is opened on the sensor housing 1, a filtering mechanism 7 corresponding to the gas flow hole 9 is arranged in the sensor housing 1, and a dehumidification mechanism 8 corresponding to the gas flow hole 9 is arranged in the sensor housing 1.

[0030] When using the gas sensor, first fix the entire sensor housing 1 at the position where the gas needs to be detected, and the outside air enters the sensor housing 1 from the gas circulation hole 9 of the sensor housing 1, and then the sensor module 3 in the sensor housing 1 detects the gas to be detected in the air. Four gas sensor modules 3 are installed on the sensor module 3, which can detect four gases at the same time. When a gas in the air exceeds the standard, the sensor module 3 sends information to the sound and light alarm module 4, and then the sound and light alarm module 4 emits an alarm sound, and then flashes the light to remind, and at the same time displays the detected gas value on the status display screen 6, and the signal transmission antenna 2 transmits the alarm signal to an external electronic computer. When the outside air enters the sensor from the gas circulation hole 9 of the sensor housing 1, the sensor module 3 will detect the gas to be detected in the air. When the air is in the sensor housing 1, it passes through the filter mechanism 7, which blocks the dust and floccules in the air. Then the air passes through the dehumidification mechanism 8 and finally contacts the sensor module 3 in the sensor housing 1. By arranging the filter mechanism 7 and the dehumidification mechanism 8 at the position of the gas flow hole 9 of the sensor housing 1, the dust and floccules in the air are filtered when the outside air passes through the filter mechanism 7 and the dehumidification mechanism 8, and then the air is dehumidified, thereby reducing the dust and floccules in the air from entering the sensor housing 1. The dust and floccules directly adhere to the surface of the sensor module 3, thereby affecting the normal operation of the sensor module 3. At the same time, it can reduce the entry of humid air into the sensor housing 1, thereby reducing the possibility that the sensor module 3 in the sensor housing 1 is affected by moisture and affects the normal operation.

[0031] Reference Figure 3 , Figure 4 and Figure 5 The filter mechanism 7 includes a filter channel 71 fixed to the inner side of the sensor housing 1 , a support frame 72 is fixed in the filter channel 71 , a filter plate 73 is fixed on the support frame 72 , a scraping component 74 is arranged in the filter channel 71 , and a vibration component 75 is arranged in the filter channel 71 .

[0032] When outside air enters from the gas circulation hole 9 of the sensor housing 1, the air contacts the filter plate 73 on the support frame 72, and then the air passes through the filter plate 73, and the filter plate 73 blocks the dust and floccules entrained in the air. Then the air contacts the sensor module 3 in the sensor housing 1, and the sensor module 3 detects the gas to be detected in the air, and then the scraping component 74 is regularly moved on the filter plate 73, and the scraping component 74 blocks the dust and floccules blocked by the filter plate 73. At the same time, the scraping component 74 drives the vibration component 75, and the vibration component 75 knocks the filter plate 73 to make the dust and floccules on the filter plate 73 fall off faster. By fixing the filter channel 71 at the position of the gas circulation hole 9 of the sensor housing 1, the air is allowed to pass through the filter plate 73 on the filter channel 71, and the filter plate 73 blocks the dust and floccules entrained in the air, thereby reducing the possibility of dust and floccules in the air entering the sensor housing 1, accumulating and adhering to the sensor module 3 for a long time, and affecting the normal operation of the sensor module 3.

[0033] Reference Figure 3 , Figure 4 and Figure 5 The scraping assembly 74 includes a scraping plate 741 disposed on the filter plate 73 , the scraping plate 741 is in conflict with the filter plate 73 , a support ring 742 is fixed on the scraping plate 741 , and a reciprocating member 743 is disposed between the support ring 742 and the filter channel 71 .

[0034] When it is necessary to scrape the dust and fluff filtered on the filter plate 73, the reciprocating member 743 is used to drive the support ring 742 to move back and forth, and then the support ring 742 drives the scraping plate 741. The scraping plate 741 scrapes the dust and fluff on the filter plate 73, allowing the dust and fluff on the filter plate 73 to fall into the filter channel 71. By regularly using the reciprocating member 743 to drive the support ring 742 to move back and forth, the support ring 742 drives the scraping plate 741 to clean the dust and fluff on the filter plate 73, thereby reducing the need to scrape the dust and fluff filtered on the filter plate 73 and reducing the obstruction of the dust and fluff to the filter plate 73.

[0035] Reference Figure 3 , Figure 4 and Figure 5 The reciprocating member 743 includes a reciprocating threaded rod 7431 rotatably connected to the filter channel 71, one end of the reciprocating threaded rod 7431 passes through the filter channel 71 and is fixed with a gear 1 7432, a gear 2 7433 is meshed on the gear 1 7432, a driving motor 7434 is fixed on the filter channel 71, and the output end of the driving motor 7434 is fixedly connected to the gear 2 7433.

[0036] The driving motor 7434 is used to drive the gear 2 7433 to rotate, the gear 2 7433 drives the gear 1 7432 to rotate, the gear 1 7432 drives the reciprocating threaded rod 7431, the reciprocating threaded rod 7431 drives the support ring 742 to move back and forth, and the support ring 742 drives the scraper plate 741 to move back and forth on the filter plate 73. By allowing the driving motor 7434 to drive the reciprocating threaded rod 7431 to rotate, the reciprocating threaded rod 7431 drives the support ring 742 to move back and forth, so that the support ring 742 can easily drive the scraper plate 741 to move back and forth, so that the dust and fluff on the filter plate 73 can be scraped off.

[0037] Reference Figure 3 and Figure 4 A cleaning port is provided on the sensor housing 1, and a rubber strip 744 is plugged into the cleaning port. After the scraping plate 741 scrapes off the dust flocs on the filter plate 73, the dust flocs fall to the bottom of the filter channel 71. When the dust flocs need to be cleaned, the rubber strip 744 on the cleaning port is directly removed, and then a thin wooden stick is inserted into the cleaning port to pick out the dust flocs in the filter channel 71, and then the rubber strip 744 is plugged into the cleaning port again. By providing a cleaning port on the sensor housing 1 and plugging the rubber strip 744 into the cleaning port, the scraped dust flocs can be easily cleaned, and the possibility of the dust flocs floating randomly can be reduced.

[0038] Reference Figure 3 , Figure 4 and Figure 5 The vibration component 75 includes a plurality of knocking heads 751 that are symmetrical in pairs. The plurality of knocking heads 751 are located on a side of the filter plate 73 away from the scraper plate 741 . A spring sheet 752 is fixed to the knocking head 751 . A synchronization component 753 is provided between the spring sheet 752 and the filter channel 71 .

[0039] When the driving motor 7434 drives gear 2 7433, gear 2 7433 drives the synchronous part, the synchronous part drives the spring sheet 752, the spring sheet 752 drives the knocking head 751, and the knocking head 751 knocks the filter plate 73, so that the dust and fluff on the filter plate 73 can fall off faster. By allowing the driving motor 7434 to drive the scraping plate 741 to move back and forth, under the action of the synchronous gear 7531, the synchronous part drives the spring sheet 752, and the spring sheet 752 drives the knocking head 751, so that the knocking head 751 knocks the filter plate 73, so that the scraping plate 741 can scrape the dust and fluff on the filter plate 73 more easily, thereby further reducing the possibility of dust and fluff clogging the filter plate 73.

[0040] Reference Figure 3 and Figure 5The synchronization component 753 includes a synchronization gear 7531 meshingly connected to the gear 2 7433 , and a support rod 7532 is fixed to the synchronization gear 7531 . The support rod 7532 passes through the filter channel 71 and is rotatably connected to the filter channel 71 . The support rod 7532 is fixedly connected to the spring sheet 752 .

[0041] When the driving motor 7434 drives gear 2 7433, and gear 2 7433 drives gear 1 7432 to rotate, gear 2 7433 drives the synchronous gear 7531, and the synchronous gear 7531 drives the support rod 7532, so that the support rod 7532 rotates under the support of the filter channel 71, and then the support rod 7532 drives the spring sheet 752, and the spring sheet 752 drives the knocking head 751 to knock on the filter plate 73. By allowing gear 2 7433 to drive gear 1 7432 to rotate, and allowing gear 2 7433 to drive gear 1 7432 to rotate, it is convenient for the scraping plate 741 to scrape off the dust and fluff on the filter plate 73, and the knocking head 751 can knock on the filter plate 73.

[0042] Reference Figure 3 and Figure 4 The dehumidification mechanism 8 includes a dehumidification box 81 fixed on the filter channel 71, and the dehumidification box 81 is provided with evenly distributed dehumidification holes. The dehumidification box 81 is filled with dehumidification particles, and the dehumidification particles are located in the silica gel dehumidification particles. A driving shaft 84 is rotatably connected in the dehumidification box 81, and a plurality of evenly distributed stirring rods 83 are fixed on the driving shaft 84. A stirring motor 82 is fixed at one end of the dehumidification box 81, and the output end of the stirring motor 82 passes through the dehumidification box 81 and is fixedly connected to the driving shaft 84.

[0043] After the outside air passes through the filter plate 73, the outside air directly enters the dehumidification box 81, and the outside air contacts the silica gel dehumidification particles filled in the dehumidification box 81, and the silica gel dehumidification particles absorb the moisture in the air, and then the air enters the sensor housing 1, and then the stirring motor 82 is started regularly, so that the stirring motor 82 drives the driving shaft 84, and the driving shaft 84 drives the stirring rod 83, so that the stirring rod 83 stirs the dehumidification particles in the dehumidification box 81, so that the filled silica gel dehumidification particles move, and reduce the possibility of uneven moisture absorption of the silica gel dehumidification particles, by fixing the dehumidification box 81 on the filter channel 71, and then adding silica gel dehumidification particles in the dehumidification box 81, the silica gel dehumidification particles are allowed to absorb the moisture in the air, thereby reducing the possibility that the air from the outside entering the sensor housing 1 is too humid and affects the normal operation of the sensor module 3.

[0044] Working principle: When using the gas sensor, first fix the entire sensor housing 1 at the position where the gas needs to be detected, and the outside air enters the sensor housing 1 from the gas circulation hole 9 of the sensor housing 1. When the outside air enters from the gas circulation hole 9 of the sensor housing 1, the air contacts the filter plate 73 on the support frame 72, and then the air passes through the filter plate 73, the filter plate 73 blocks the dust and fluff in the air, and then the air directly enters the dehumidification box 81, the outside air contacts the silica gel dehumidification particles filled in the dehumidification box 81, the silica gel dehumidification particles absorb the moisture in the air, and then the air enters the sensor housing 1 again, and then the air contacts the sensor module 3 in the sensor housing 1, the sensor module 3 detects the gas that needs to be detected in the air, when a gas in the air exceeds the standard, the sensor module 3 sends information to the sound and light alarm module 4, and then the sound and light alarm module 4 sends an alarm sound, and then the light flashes to remind, and at the same time the detected gas value is displayed on the status display screen 6, and the signal transmission antenna 2 transmits the alarm signal to an external electronic computer.

[0045] Then, the driving motor 7434 and the stirring motor 82 are started regularly, the driving motor 7434 drives the gear 2 7433 to rotate, the gear 2 7433 drives the gear 1 7432 to rotate, the gear 1 7432 drives the reciprocating threaded rod 7431, the reciprocating threaded rod 7431 drives the support ring 742 to move back and forth, and the support ring 742 drives the scraping plate 741 to move back and forth on the filter plate 73, the scraping plate 741 scrapes the dust and floating cotton on the filter plate 73, and at the same time, the gear 2 7433 drives the synchronous gear 7 531, the synchronous gear 7531 drives the support rod 7532, so that the support rod 7532 rotates under the support of the filter channel 71, and then the support rod 7532 drives the spring sheet 752, and the spring sheet 752 drives the knocking head 751 to knock on the filter plate 73, so that the dust and fluff fall from the filter plate 73, and at the same time the stirring motor 82 drives the driving rod, and the driving rod drives the stirring rod 83, and the stirring rod 83 moves the silica gel dehumidification particles in the dehumidification box 81, so that the silica gel dehumidification particles are evenly distributed, which is convenient for subsequent dehumidification.

Claims

1. A four-in-one explosion-proof gas sensor, comprising a sensor housing (1), characterized in that: A sensor module (3) is installed in the sensor housing (1), four gas sensors are installed in the sensor module (3), a signal transmission antenna (2) is installed on the sensor housing (1), a switch (5) is installed on one side of the sensor housing (1), a status display screen (6) is installed on one side of the sensor housing (1), an audible and visual alarm module (4) is installed on the top of the sensor housing (1), a gas circulation hole (9) is opened on the sensor housing (1), a filtering mechanism (7) corresponding to the gas circulation hole (9) is arranged in the sensor housing (1), and a dehumidification mechanism (8) corresponding to the gas circulation hole (9) is arranged in the sensor housing (1).

2. The four-in-one explosion-proof gas sensor according to claim 1, characterized in that: The filtering mechanism (7) comprises a filtering channel (71) fixed to the inner side of the sensor housing (1), a supporting frame (72) being fixed in the filtering channel (71), a filtering plate (73) being fixed on the supporting frame (72), a scraping component (74) being arranged in the filtering channel (71), and a vibrating component (75) being arranged in the filtering channel (71).

3. The four-in-one explosion-proof gas sensor according to claim 2, characterized in that: The scraping assembly (74) comprises a scraping plate (741) arranged on the filter plate (73), the scraping plate (741) being in contact with the filter plate (73), a support ring (742) being fixed on the scraping plate (741), and a reciprocating member (743) being arranged between the support ring (742) and the filter channel (71).

4. The four-in-one explosion-proof gas sensor according to claim 3, characterized in that: The reciprocating member (743) comprises a reciprocating threaded rod (7431) rotatably connected in the filter channel (71); one end of the reciprocating threaded rod (7431) passes through the filter channel (71) and is fixed with a first gear (7432); a second gear (7433) is meshed with the first gear (7432); a driving motor (7434) is fixed to the filter channel (71); and an output end of the driving motor (7434) is fixedly connected to the second gear (7433).

5. The four-in-one explosion-proof gas sensor according to claim 3, characterized in that: The sensor housing (1) is provided with a cleaning opening, and a rubber strip (744) is plugged in the cleaning opening.

6. The four-in-one explosion-proof gas sensor according to claim 4, characterized in that: The vibration component (75) comprises a plurality of knocking heads (751) that are symmetrical in pairs, and the plurality of knocking heads (751) are located on a side of the filter plate (73) away from the scraper plate (741). A spring sheet (752) is fixed to the knocking head (751), and a synchronization component (753) is provided between the spring sheet (752) and the filter channel (71).

7. The four-in-one explosion-proof gas sensor according to claim 6, characterized in that: The synchronization component (753) comprises a synchronization gear (7531) meshingly connected to the second gear (7433); a support rod (7532) is fixed to the synchronization gear (7531); the support rod (7532) passes through the filter channel (71) and is rotationally connected to the filter channel (71); the support rod (7532) is fixedly connected to the spring sheet (752).

8. The four-in-one explosion-proof gas sensor according to claim 2, characterized in that: The dehumidification mechanism (8) comprises a dehumidification box (81) fixed on the filtering channel (71), the dehumidification box (81) is provided with evenly distributed dehumidification holes, the dehumidification box (81) is filled with dehumidification particles, the dehumidification particles are located on silica gel dehumidification particles, a driving shaft (84) is rotatably connected in the dehumidification box (81), a plurality of evenly distributed stirring rods (83) are fixed on the driving shaft (84), a stirring motor (82) is fixed at one end of the dehumidification box (81), and the output end of the stirring motor (82) passes through the dehumidification box (81) and is fixedly connected to the driving shaft (84).

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