Gas monitoring device based on multiple sensors

Abstract

The invention discloses a gas monitoring device based on multiple sensors, and relates to the technical field of gas monitoring, the gas monitoring device comprises an outer shell, a gas suction assembly and a detection assembly, a sealing cover is arranged on the outer side of the top of the outer shell, the gas suction assembly is arranged in the sealing cover, and a partition plate is arranged at the middle end in the outer shell; an air suction groove is formed in the outer end of the top of the outer shell, and a second motor is arranged on the inner side of the bottom of the outer shell. The gas extraction of the collection test tube is realized based on the rotation of the rotary suction tube, and in the rotation process of the rotary suction tube, the equipment can transmit gas to the butt joint opening communicated with the gas transmission tube, so that the equipment can perform gas detection while exhausting gas, and the working efficiency of the equipment is improved; in addition, a worker can collect the detected gas through the collection test tube by disassembling and assembling the collection test tube, and if a subsequent detection error occurs, the worker can check the gas in the collection test tube by rechecking the gas in the collection test tube.

Description

Technical Field

[0001] The present invention relates to the technical field of gas monitoring, and in particular to a gas monitoring device based on multiple sensors. Background Art

[0002] Methane is a colorless, odorless gas and one of the main components of natural gas. Since methane is flammable and may cause explosions under certain conditions, gas monitoring devices are needed to monitor methane gas in industry, mining and other related fields.

[0003] During use, the gas inhaled into the common gas monitoring devices on the market is difficult to be effectively discharged, which makes it easy for the gas in the device to contaminate the subsequently inhaled gas, resulting in errors in the detection results. In addition, due to the large monitoring range of methane gas, the detection efficiency of common gas monitoring devices on the market is low and cannot adapt to large-scale methane gas monitoring.

[0004] Therefore, in view of this, the existing structure and defects are studied and improved, and a gas monitoring device based on multiple sensors is proposed. Summary of the Invention

[0005] The object of the present invention is to provide a gas monitoring device based on multiple sensors to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: A multi-sensor based gas monitoring device, comprising an outer shell, an air intake component and a detection component, wherein a sealing cover is provided on the top outer side of the outer shell, and an air intake component is provided inside the sealing cover, a partition is provided at the inner middle end of the outer shell, and an air intake groove is provided at the top outer end of the outer shell, and a second motor is arranged on the inner side of the bottom of the outer shell, and a detection component is arranged on the top outer side of the second motor, the detection component comprises a gas storage seat, a docking head, a gas delivery groove, a detection seat, a semiconductor sensor electric control spring, an air inlet groove, a glass cover, an armature and a one-way exhaust valve port, a docking head is provided on the top outer side of the gas storage seat, and a gas delivery groove is provided inside the gas storage seat, a detection seat is provided on both sides of the outer side of the gas storage seat, and semiconductor sensor electric control springs are arranged on both sides of the inner side of the detection seat, and an air inlet groove is provided on the inner side of the semiconductor sensor electric control spring, a glass cover is arranged on the inner side of the detection seat, and armatures are provided at both ends of the outer side of the glass cover, and a one-way exhaust valve port is provided at the outer middle end of the glass cover.

[0007] Furthermore, the air suction component includes a first motor, a transmission belt, a rotating straw, an air suction port, a micro air pump, an air suction fan and an air supply pipe. The output end of the first motor is provided with a transmission belt, and the other end of the transmission belt is connected to the rotating straw. The top end of the rotating straw is connected to the air suction port, and the end of the rotating straw is provided with a micro air suction pump. The outer end of the rotating straw is provided with an air suction fan, and the bottom end of the micro air pump is connected to the air supply pipe.

[0008] Furthermore, the first motor drives the rotating straw to rotate via a transmission belt, and the rotating straw drives the air inlet and the exhaust fan to rotate.

[0009] Furthermore, the rotating suction pipe is connected to the micro air pump through the air suction port, and the micro air pump is connected to the docking joint through the air supply pipe.

[0010] Furthermore, the opening of the gas pipe is semicircular, and the opening of the docking joint is a semicircular double-section opening.

[0011] Furthermore, the second motor drives the gas storage seat and the docking head to rotate, and the docking head is connected to the detection seat through the gas delivery groove.

[0012] Furthermore, the semiconductor sensor electric control spring is elastically connected to the glass cover, and the outer contour of the glass cover matches the inner contour of the detection seat.

[0013] Furthermore, an electromagnet is provided on the inner side of the outer shell, and a docking exhaust port is provided on the inner side of the outer shell, a one-way exhaust valve is provided on the outer bottom end of the outer shell, and a collecting tube is placed on the outer end of the outer shell, and docking slots are provided on both ends of the outer side of the collecting tube, a one-way air inlet valve is provided on the outer side of the top of the outer shell, and infrared gas detectors are provided on both sides of the inner side of the outer shell.

[0014] Furthermore, the electromagnet is electromagnetically adsorbed and connected to the armature, the docking exhaust port is communicated with the one-way exhaust valve port, and the one-way exhaust valve port is communicated with the one-way exhaust valve.

[0015] Furthermore, the collecting test tube is connected to the one-way exhaust valve and the one-way air inlet valve through the docking notch, and the one-way air inlet valve is connected to the air suction groove.

[0016] The present invention provides a gas monitoring device based on multiple sensors, which has the following beneficial effects:

[0017] 1. The gas sucked by the micro vacuum pump of the present invention can be connected with the gas supply pipe and the docking joint and input into the gas supply groove inside the gas storage seat. The gas supply groove is connected to the inside of the detection seat, so that the gas to be detected can enter the semiconductor sensor electric control spring through the gas inlet groove. A semiconductor gas sensor is provided inside the semiconductor sensor electric control spring. If the methane gas content in the detection gas is high, the gas will react with the semiconductor material of the semiconductor gas sensor, which reduces the conductivity of the semiconductor material. After the conductivity of the semiconductor material is reduced, the current inside the semiconductor sensor electric control spring will be reduced, which will reduce the adsorption of the electric control magnet in the semiconductor sensor electric control spring, thereby increasing the elasticity of the semiconductor sensor electric control spring, which can push the glass The glass cover moves outward inside the detection seat. After the glass cover moves outward, it can be moved into the detection range of the infrared gas detector, and the infrared gas detector works. The infrared gas detector can calculate the methane concentration in the detection gas by measuring the attenuation of light based on the absorption characteristics of gas molecules to infrared light of a specific wavelength. Because the detection time of the infrared gas detector is long, but the detection result is accurate, and the detection speed of the semiconductor gas sensor is fast, but the accuracy is relatively poor, through the above operations, the device can automatically switch to the infrared gas detector detection when the detection result of the semiconductor gas sensor is unqualified. This allows the device to effectively ensure the detection accuracy while ensuring the detection speed, which makes the device better adapted to methane gas detection in a larger space.

[0018] 2. The components in the gas storage seat of the present invention are symmetrically distributed at its two ends, and the opening of the gas transmission pipe is semicircular, and the docking opening is a semicircular double-section opening. The second motor can drive the gas storage seat to rotate and adjust the position, which enables the device to input the same gas into the detection seats at both ends of the gas storage seat. Through this design, the device can perform comparative detection on the same gas to be detected, which further improves the detection accuracy of the device.

[0019] 3. When the gas storage seat of the present invention rotates and drives the detection seat close to one side of the electromagnet, the electromagnet can drive the glass cover to move inside the detection seat through the adsorption force, which enables the electromagnet to be adsorbed with the armature. When the electromagnet is adsorbed with the armature, the one-way exhaust valve port and the docking exhaust port are docked. The rotating straw will drive the exhaust fan to rotate synchronously during the process of rotating and inhaling air. During the rotation of the exhaust fan, the one-way air inlet valve can be connected with the air suction groove to draw the collection test tube into a negative pressure state. When the one-way exhaust valve port and the docking exhaust port are docked, the collection test tube can be connected with the internal space of the detection seat through the one-way exhaust valve. In this state, the opening of the docking joint will fit with the closed end of the gas supply pipe, which enables the collection test tube to draw the detection seat and the gas supply pipe through the suction force generated by the negative pressure. The gas that has been tested in the tank is sucked out. Through this operation, the equipment can effectively discharge the gas that has been tested, which can effectively avoid the situation where the test gas is not completely discharged and affects subsequent tests. Because the gas extraction of the collecting tube is based on the rotation of the rotating straw, and during the rotation of the rotating straw, the equipment can supply gas to the joint opening that is connected to the gas supply pipe at this time, which enables the equipment to exhaust and perform gas detection at the same time, which improves the working efficiency of the equipment. In addition, the staff can collect the gas that has been tested by the collecting tube by disassembling and assembling the collecting tube. If there is a detection error later, the staff can check by re-inspecting the gas in the collecting tube, which further improves the detection accuracy and working efficiency of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of the overall three-dimensional structure of a multi-sensor based gas monitoring device of the present invention;

[0021] Figure 2 This is a schematic diagram of the structure of a first motor and a transmission belt of a multi-sensor-based gas monitoring device of the present invention;

[0022] Figure 3 This is a schematic diagram of the internal structure of the outer shell of a multi-sensor based gas monitoring device of the present invention;

[0023] Figure 4 This is a schematic diagram of the overall structure of a detection component of a multi-sensor based gas monitoring device of the present invention;

[0024] Figure 5 This is a schematic diagram of the disassembled structure of the detection components of a multi-sensor based gas monitoring device of the present invention;

[0025] Figure 6 This is a schematic diagram of the gas pipeline structure of a multi-sensor based gas monitoring device of the present invention;

[0026] Figure 7This is a schematic cross-sectional view of the overall structure of a multi-sensor gas monitoring device according to the present invention. The figure includes: 1. Outer shell; 2. Sealing cover; 3. Air suction assembly; 301. First motor; 302. Drive belt; 303. Rotating suction pipe; 304. Air suction port; 305. Micro air pump; 306. Air exhaust fan; 307. Air supply pipe; 4. Partition; 5. Air suction slot; 6. Second motor; 7. Detection assembly; 701. Gas storage seat; 702. Docking head; 703. Gas supply slot; 704. Detection seat; 705. Semiconductor sensor electric control spring; 706. Air inlet slot; 707. Glass cover; 708. Armature; 709. One-way exhaust valve port; 8. Electromagnet; 9. Docking exhaust port; 10. One-way exhaust valve; 11. Collection tube; 12. Docking slot; 13. One-way air inlet valve; 14. Infrared gas detector. DETAILED DESCRIPTION

[0027] See also Figures 1 to 7 The present invention provides a technical solution: a gas monitoring device based on a multi-sensor, comprising an outer shell 1, an air suction component 3 and a detection component 7, a sealing cover 2 is provided on the top outer side of the outer shell 1, and an air suction component 3 is provided inside the sealing cover 2, a partition 4 is provided at the inner middle end of the outer shell 1, and an air suction groove 5 is opened at the top outer end of the outer shell 1, and a second motor 6 is arranged on the inner side of the bottom of the outer shell 1, and a detection component 7 is arranged on the top outer side of the second motor 6, and the detection component 7 includes a gas storage seat 701, a docking joint 702, a gas delivery groove 703, a detection seat 704, a semiconductor sensor electric control spring 705, and an air inlet groove 70 6. Glass cover 707, armature 708 and one-way exhaust valve port 709. A docking joint 702 is provided on the outer side of the top of the gas storage seat 701, and a gas delivery groove 703 is opened inside the gas storage seat 701. Detection seats 704 are provided on both sides of the outside of the gas storage seat 701, and semiconductor sensor electric-controlled springs 705 are placed on both sides of the inside of the detection seat 704, and an air inlet groove 706 is opened on the inside of the semiconductor sensor electric-controlled spring 705. A glass cover 707 is placed on the inside of the detection seat 704, and armatures 708 are provided at both ends of the outside of the glass cover 707. A one-way exhaust valve port 709 is provided at the middle end of the outside of the glass cover 707.

[0028] See also Figures 1 to 7The air suction component 3 includes a first motor 301, a transmission belt 302, a rotating suction pipe 303, an air suction port 304, a micro air pump 305, an air exhaust fan 306 and an air supply pipe 307. The output end of the first motor 301 is provided with a transmission belt 302, and the other end of the transmission belt 302 is connected to the rotating suction pipe 303. The top end of the rotating suction pipe 303 is connected to the air suction port 304, and the end of the rotating suction pipe 303 is provided with a micro air pump 305. The outer end of the rotating suction pipe 303 is provided with an air exhaust fan 306. The bottom end of the micro air pump 305 is connected to an air pipe 307. The first motor 301 drives the rotating straw 303 to rotate through the transmission belt 302, and the rotating straw 303 drives the air inlet 304 and the exhaust fan 306 to rotate. The rotating straw 303 is connected to the micro air pump 305 through the air inlet 304, and the micro air pump 305 is connected to the docking head 702 through the air pipe 307. The opening of the air pipe 307 is semicircular, and the opening of the docking head 702 is a semicircular double-section opening. The second motor 6 The gas storage seat 701 and the docking head 702 are driven to rotate, and the docking head 702 is connected to the detection seat 704 through the gas delivery groove 703. The semiconductor sensor electric control spring 705 is elastically connected to the glass cover 707, and the outer contour of the glass cover 707 matches the inner contour of the detection seat 704. The inner side of the outer shell 1 is provided with an electromagnet 8, and the inner side of the outer shell 1 is provided with a docking exhaust port 9, the outer bottom end of the outer shell 1 is provided with a one-way exhaust valve 10, and the outer end of the outer shell 1 is provided with a collection tube 11 to collect the test gas. The outer ends of the tube 11 are provided with docking notches 12, a one-way air inlet valve 13 is provided on the outer side of the top of the outer shell 1, and infrared gas detectors 14 are provided on both sides of the inner side of the outer shell 1. The electromagnet 8 is electromagnetically connected to the armature 708, the docking exhaust port 9 is connected to the one-way exhaust valve port 709, and the one-way exhaust valve port 709 is connected to the one-way exhaust valve 10. The collection tube 11 is connected to the one-way exhaust valve 10 and the one-way air inlet valve 13 through the docking notch 12, and the one-way air inlet valve 13 is connected to the air suction groove 5.

[0029] The specific operation is as follows: the staff holds the equipment and aligns the docking slot 12 of the collection tube 11 with the one-way exhaust valve 10 and the one-way air inlet valve 13 respectively, so that the collection tube 11 can be docked with the equipment. During the operation of the equipment, the micro air pump 305 works, and the suction force can be transmitted to the outside through the rotating straw 303 and the air inlet 304 to collect the external gas. In the collection process, the first motor 301 works, and the transmission belt 302 drives the rotating straw 303 to rotate, which enables the air inlet 304 to collect gas from different directions, which can effectively expand the gas collection range of the equipment, and avoid the situation where gas is sucked in a single direction and affects the test results. The gas sucked by the micro air pump 305 is passed through the gas transmission pipe 307 is docked with the docking head 702, thereby inputting into the gas delivery groove 703 inside the gas storage seat 701, and the gas delivery groove 703 is connected to the inside of the detection seat 704, so that the gas to be detected can enter the semiconductor sensor electric control spring 705 through the gas inlet groove 706. A semiconductor gas sensor is set inside the semiconductor sensor electric control spring 705. If the methane gas content in the detection gas is high, the gas will react with the semiconductor material of the semiconductor gas sensor, which reduces the conductivity of the semiconductor material. After the conductivity of the semiconductor material is reduced, the current inside the semiconductor sensor electric control spring 705 is reduced, which reduces the adsorption of the electric control magnet in the semiconductor sensor electric control spring 705, which makes the semiconductor sensor electric control spring The elasticity of 705 increases, which can push the glass cover 707 to move outward inside the detection seat 704. After the glass cover 707 moves outward, it can move to the detection range of the infrared gas detector 14, and the infrared gas detector 14 works. The infrared gas detector 14 can calculate the methane concentration in the detection gas by measuring the attenuation of light based on the absorption characteristics of gas molecules to infrared light of a specific wavelength. Because the detection time of the infrared gas detector 14 is long, but the detection result is accurate, and the detection speed of the semiconductor gas sensor is fast, but the accuracy is relatively poor, through the above operation, the device can automatically switch to the infrared gas detector 14 for detection when the detection result of the semiconductor gas sensor is unqualified, which makes the device effectively ensure the detection speed while ensuring the detection speed. Detection accuracy, which enables the device to better adapt to methane gas detection in a larger space range. In addition, the components in the gas storage seat 701 are symmetrically distributed at both ends, and the opening of the gas pipe 307 is semicircular, and the opening of the joint 702 is a semicircular double-section opening. The second motor 6 is operated to drive the gas storage seat 701 to rotate and adjust the position, which enables the device to input the same gas into the detection seats 704 at both ends of the gas storage seat 701. Through this design, the device can perform comparative detection on the same gas to be detected, which further improves the detection accuracy of the device. In addition, when the gas storage seat 701 rotates to drive the detection seat 704 close to one side of the electromagnet 8, the electromagnet 8 can drive the glass cover 707 to move inside the detection seat 704 through adsorption force.This allows the electromagnet 8 to be adsorbed with the armature 708. When the electromagnet 8 is adsorbed with the armature 708, the one-way exhaust valve port 709 will be docked with the docking exhaust port 9. The rotating suction pipe 303 will drive the exhaust fan 306 to rotate synchronously during the rotation and suction process. During the rotation of the exhaust fan 306, the one-way air inlet valve 13 can be connected with the suction groove 5 to draw the collection tube 11 into a negative pressure state. When the one-way exhaust valve port 709 is docked with the docking exhaust port 9, the collection tube 11 can be connected with the internal space of the detection seat 704 through the one-way exhaust valve 10. In this state, the opening of the docking joint 702 will fit with the closed end of the gas supply pipe 307, which allows the collection tube 11 to use the suction force generated by the negative pressure to draw the gas in the detection seat 704 and the gas supply groove 703 to complete the detection. The device can effectively discharge the gas that has been detected by the device through this operation, which can effectively avoid the situation where the detected gas is not completely discharged and affects the subsequent detection. The gas extraction of the collection tube 11 is based on the rotation of the rotating suction tube 303. During the rotation of the rotating suction tube 303, the device can supply gas to the opening of the docking joint 702 which is connected to the gas supply pipe 307 at this time. This allows the device to exhaust gas while performing gas detection, which improves the working efficiency of the device. In addition, the staff can collect the gas that has been detected by the collection tube 11 by disassembling and assembling the collection tube 11. If there is a detection error later, the staff can check the gas by re-checking the collection tube 11, which further improves the detection accuracy and working efficiency of the device.

[0030] In summary, when using the multi-sensor gas monitoring device, the staff first holds the device and aligns the docking notch 12 of the collection tube 11 with the one-way exhaust valve 10 and the one-way air inlet valve 13 respectively, so that the collection tube 11 can be docked with the device. During the operation of the device, the micro air pump 305 works, and the suction force can be transmitted to the outside through the rotating straw 303 and the air inlet 304 to collect the external gas. During the collection process, the first motor 301 works, and the transmission belt 302 drives the rotating straw 303 to rotate, so that the air inlet 304 can collect gas from different directions, which can effectively expand the gas collection range of the device and avoid the situation where the gas is sucked in a single direction and affects the detection results.

[0031] Then the gas sucked by the micro air pump 305 can be connected with the docking joint 702 through the air delivery pipe 307 and input into the air delivery groove 703 inside the air storage seat 701. The air delivery groove 703 is connected to the inside of the detection seat 704, so that the gas to be detected can enter the semiconductor sensor electric control spring 705 through the air inlet groove 706. A semiconductor gas sensor is provided inside the semiconductor sensor electric control spring 705. If the methane gas content in the detection gas is high, the gas will react with the semiconductor material of the semiconductor gas sensor, which reduces the conductivity of the semiconductor material. When the conductivity of the semiconductor material is reduced, the current inside the semiconductor sensor electric control spring 705 will be reduced, which will reduce the adsorption of the electric control magnet in the semiconductor sensor electric control spring 705, which will make the elasticity of the semiconductor sensor electric control spring 705 The increase can push the glass cover 707 to move outward inside the detection seat 704. After the glass cover 707 moves outward, it can move into the detection range of the infrared gas detector 14, and the infrared gas detector 14 works. The infrared gas detector 14 can calculate the methane concentration in the detection gas by measuring the attenuation of light based on the absorption characteristics of gas molecules to infrared light of a specific wavelength. Because the detection time of the infrared gas detector 14 is long, but the detection result is accurate, and the detection speed of the semiconductor gas sensor is fast, but the accuracy is relatively poor, through the above operation, the device can automatically switch to the infrared gas detector 14 for detection when the detection result of the semiconductor gas sensor is unqualified, which enables the device to effectively ensure the detection accuracy while ensuring the detection speed, so that the device can be better adapted to methane gas detection in a larger space range;

[0032] Next, because the components within the gas reservoir 701 are symmetrically distributed at its two ends, the opening of the gas delivery pipe 307 is semicircular, and the opening of the docking joint 702 is a semicircular double-section opening, the second motor 6 can drive the gas reservoir 701 to rotate and adjust its position. This allows the device to input the same gas into the detection seats 704 at both ends of the gas reservoir 701. Through this design, the device can perform comparative detection of the same gas to be detected, which further improves the detection accuracy of the device.

[0033] Then, when the gas storage seat 701 rotates and drives the detection seat 704 to approach the side of the electromagnet 8, the electromagnet 8 can drive the glass cover 707 to move inside the detection seat 704 through the adsorption force, which enables the electromagnet 8 to be adsorbed with the armature 708. When the electromagnet 8 is adsorbed with the armature 708, the one-way exhaust valve port 709 is docked with the docking exhaust port 9. The rotating suction pipe 303 drives the exhaust fan 306 to rotate synchronously during the rotation and suction process. During the rotation, the exhaust fan 306 can be connected with the suction groove 5 through the one-way air inlet valve 13 to draw the collection test tube 11 into a negative pressure state. When the one-way exhaust valve port 709 is docked with the docking exhaust port 9, the collection test tube 11 can be connected with the detection seat 704 through the one-way exhaust valve 10. The internal space is connected, and in this state, the opening of the docking joint 702 will fit with the closed end of the gas supply pipe 307, which enables the collection test tube 11 to suck out the gas that has been tested in the detection seat 704 and the gas supply groove 703 through the suction force generated by the negative pressure. Through this operation, the device can effectively discharge the gas that has been tested, which can effectively avoid the situation where the test gas is not completely discharged and affects the subsequent detection. Because the extraction of gas from the collection test tube 11 is based on the rotation of the rotating suction pipe 303, and during the rotation of the rotating suction pipe 303, the device can supply gas to the opening of the docking joint 702 that is now connected to the gas supply pipe 307, which enables the device to exhaust gas while performing gas detection, thereby improving the working efficiency of the device;

[0034] Finally, the staff can collect the gas that has been tested by disassembling and assembling the collecting tube 11. If a detection error occurs later, the staff can check the gas by re-checking the collecting tube 11, which further improves the detection accuracy and work efficiency of the equipment.

[0035] The embodiments of the present invention are presented for purposes of illustration and description and are not intended to be exhaustive or to limit the invention to the disclosed forms. Many modifications and variations will be apparent to those skilled in the art. The embodiments are chosen and described in order to better illustrate the principles of the invention and its practical application and to enable those skilled in the art to understand the invention and design various embodiments with various modifications as suited for specific applications.

Claims

1. A gas monitoring device based on multiple sensors, characterized in that: The invention comprises an outer shell (1), an air suction component (3) and a detection component (7), wherein a sealing cover (2) is provided on the outer side of the top of the outer shell (1), and an air suction component (3) is provided inside the sealing cover (2), a partition (4) is provided at the middle end of the inner part of the outer shell (1), and an air suction groove (5) is provided at the outer end of the top of the outer shell (1), and a second motor (6) is arranged on the inner side of the bottom of the outer shell (1), and a detection component (7) is arranged on the outer side of the top of the second motor (6), and the detection component (7) comprises an air storage seat (701), a docking head (702), an air delivery groove (703), a detection seat (704), a semiconductor sensor electric control spring (705), an air inlet groove (706), and a glass cover (707). , an armature (708) and a one-way exhaust valve port (709); a docking joint (702) is provided on the outer side of the top of the gas storage seat (701); a gas delivery groove (703) is provided inside the gas storage seat (701); a detection seat (704) is provided on both sides of the outside of the gas storage seat (701); semiconductor sensor electric control springs (705) are arranged on both sides of the inside of the detection seat (704); an air inlet groove (706) is provided on the inside of the semiconductor sensor electric control spring (705); a glass cover (707) is arranged on the inside of the detection seat (704); armatures (708) are provided at both ends of the outside of the glass cover (707); and a one-way exhaust valve port (709) is provided at the middle end of the outside of the glass cover (707).

2. A multi-sensor based gas monitoring device according to claim 1, characterized in that: The air suction component (3) comprises a first motor (301), a transmission belt (302), a rotating suction pipe (303), an air suction port (304), a micro air pump (305), an air suction fan (306) and an air supply pipe (307); the output end of the first motor (301) is provided with a transmission belt (302), and the other end of the transmission belt (302) is connected to the rotating suction pipe (303); the top end of the rotating suction pipe (303) is connected to the air suction port (304), and the end of the rotating suction pipe (303) is provided with a micro air suction pump (305); the outer end of the rotating suction pipe (303) is provided with an air suction fan (306), and the bottom end of the micro air pump (305) is connected to the air supply pipe (307).

3. A multi-sensor based gas monitoring device according to claim 2, characterized in that: The first motor (301) drives the rotating suction pipe (303) to rotate via the transmission belt (302), and the rotating suction pipe (303) drives the air intake (304) and the exhaust fan (306) to rotate.

4. A multi-sensor based gas monitoring device according to claim 2, characterized in that: The rotating suction pipe (303) is connected to the micro air pump (305) through the air suction port (304), and the micro air pump (305) is connected to the docking joint (702) through the air supply pipe (307).

5. The multi-sensor based gas monitoring device according to claim 2, characterized in that: The opening of the gas delivery pipe (307) is semicircular, and the opening of the docking joint (702) is a semicircular double-section opening.

6. The multi-sensor based gas monitoring device according to claim 1, characterized in that: The second motor (6) drives the gas storage seat (701) and the docking head (702) to rotate, and the docking head (702) is connected to the detection seat (704) through the gas delivery groove (703).

7. The multi-sensor based gas monitoring device according to claim 1, characterized in that: The semiconductor sensing electric control spring (705) is elastically connected to the glass cover (707), and the outer contour of the glass cover (707) matches the inner contour of the detection seat (704).

8. The multi-sensor based gas monitoring device according to claim 1, characterized in that: An electromagnet (8) is provided on the inner side of the outer shell (1), and a docking exhaust port (9) is provided on the inner side of the outer shell (1), a one-way exhaust valve (10) is provided on the outer bottom end of the outer shell (1), and a collecting tube (11) is placed on the outer end of the outer shell (1), and docking notches (12) are provided on both ends of the outer side of the collecting tube (11), a one-way air inlet valve (13) is provided on the outer side of the top of the outer shell (1), and infrared gas detectors (14) are provided on both sides of the inner side of the outer shell (1).

9. The multi-sensor based gas monitoring device according to claim 8, characterized in that: The electromagnet (8) is electromagnetically adsorbed and connected to the armature (708), the docking exhaust port (9) is connected to the one-way exhaust valve port (709), and the one-way exhaust valve port (709) is connected to the one-way exhaust valve (10).

10. The multi-sensor based gas monitoring device according to claim 8, characterized in that: The collecting test tube (11) is connected to the one-way exhaust valve (10) and the one-way air inlet valve (13) through the docking notch (12), and the one-way air inlet valve (13) is connected to the air suction groove (5).

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