An automatic detector for toxic and harmful gases

Abstract

The present invention discloses an automatic toxic and harmful gas detection instrument, which relates to the technical field of gas detection. It includes a vehicle body, on the top of which a vertical rod is fixedly arranged. Four connecting blocks are fixedly arranged on the outside of the vertical rod, and a gas detector body is fixedly arranged at one end of each connecting block. An air inlet pipe and an air outlet pipe are respectively arranged at the top and bottom of the gas detector body. An air inlet adjustment structure is arranged at one end of the vertical rod. The air inlet adjustment structure includes a first air storage tank, which is fixedly connected to the vertical rod, and the first air storage tank is rotatably connected with a rotating disk. The automatic toxic and harmful gas detection instrument of the present invention can detect different gases separately, can discharge the gas of the first air extraction mechanism itself before detection, and collect the air discharged by the first air extraction mechanism and the toxic and harmful gas together to avoid affecting the surrounding air.

Description

Technical Field

[0001] The present invention relates to the technical field of gas detection, and particularly relates to an automatic toxic and harmful gas detection instrument. Background Art

[0002] Gas detection is an instrument for detecting the concentration of gas leakage, especially for the detection of toxic and harmful gases, which can effectively analyze the components of the gas to help workers with safety protection.

[0003] However, when traditional detection instruments are used in the laboratory, toxic and harmful gases are usually sucked into the gas detector body for detection. When detecting different gases, different gases are inhaled into the same detector for detection, which will affect the detection accuracy and cannot detect different gases separately. Moreover, the gas in the air extraction mechanism itself before air extraction also affects the detection accuracy. Therefore, the present invention proposes an automatic toxic and harmful gas detection instrument. Summary of the Invention

[0004] The main purpose of the present invention is to provide an automatic toxic and harmful gas detection instrument, which can effectively solve the technical problems proposed in the background art.

[0005] To achieve the above purpose, the technical solution adopted by the present invention is as follows:

[0006] An automatic toxic and harmful gas detection instrument includes a vehicle body. A vertical rod is fixedly arranged on the top of the vehicle body. Four connecting blocks are fixedly arranged on the outside of the vertical rod, and a gas detector body is fixedly arranged at one end of the connecting block. An air inlet pipe and an air outlet pipe are respectively arranged at the top and bottom of the gas detector body. An air inlet adjustment structure is arranged at one end of the vertical rod.

[0007] The air inlet adjustment structure includes a first gas storage tank, which is fixedly connected to the vertical rod. The first gas storage tank is rotatably connected with a rotating disk. A fixed frame is fixedly arranged on the top of the rotating disk. A first air extraction mechanism is fixedly connected through the top of the fixed frame. Four gas storage cylinders are fixedly arranged on the inner bottom surface of the first gas storage tank. Four ventilation holes are arranged on the outside of the gas storage cylinder. An air inlet is arranged at the top of the gas storage cylinder. A one-way valve is connected through the bottom of the gas storage cylinder and is arranged inside the air inlet pipe through the bottom of the first gas storage tank. A sealing ring is slidably arranged on the outside of the gas storage cylinder. A first spring is arranged between the bottom of the sealing ring and the bottom of the gas storage cylinder. A first fixing plate is fixedly arranged on the outside of the sealing ring.

[0008] As a preferred technical solution of the present invention, the intake air adjustment structure further includes four groups of linkage components. The linkage component includes a linkage rod, and the linkage rod is fixedly connected to the first fixing plate at the corresponding position. One end of the linkage rod penetrates through the connecting block at the corresponding position and is fixedly connected to a first connecting plate. One end of the first connecting plate is fixedly connected to a first movable pipe. The first movable pipe is slidably arranged inside the air outlet pipe, and four air outlet ports are formed on the outer part of the first movable pipe. A limiting disc is fixedly arranged on the outer part of the linkage rod, and a second spring is arranged between the bottom of the limiting disc and the top of the connecting block. The second spring is located around the corresponding linkage rod.

[0009] As a preferred technical solution of the present invention, the intake air adjustment structure further includes a pressing-down component. The pressing-down component includes an electric push rod. One end of the electric push rod is fixedly connected to a fixing frame, and the other end of the electric push rod is fixedly connected to a pressing rod. A second connecting plate is fixedly connected to the outer part of the pressing rod. The second connecting plate penetrates and is fixedly connected to a second movable pipe. The second movable pipe is slidably arranged inside the first air extraction mechanism. The rotating disc is penetrated by the pressing rod, and the second movable pipe is adaptively matched with the air inlet.

[0010] As a preferred technical solution of the present invention, the intake air adjustment structure further includes an adjustment component. The adjustment component includes a second fixing plate. The second fixing plate is fixedly connected to the first air storage tank. A motor is arranged at the bottom of the second fixing plate. The output shaft of the motor penetrates through the second fixing plate and is fixedly connected to a gear disc. The gear disc is meshed and connected with a gear ring. The gear ring is fixedly connected to the rotating disc.

[0011] As a preferred technical solution of the present invention, a gas filtering structure is arranged on the outer part of the vertical rod. The gas filtering structure includes a second air storage tank and a support rod. The second air storage tank is fixedly arranged on the outer part of the vertical rod. The second air storage tank and the first air storage tank are connected through a first connecting pipe in a penetrating manner. A water outlet valve port is arranged at the bottom of the second air storage tank. An exhaust pipe is arranged on the outer part of the second air storage tank. The support rod is connected to the vehicle body through a plurality of first screws. A filter box is fixedly arranged at the top of the support rod. A plurality of activated carbon filter blocks are arranged inside the filter box. A second air extraction mechanism and a second connecting pipe are respectively arranged on both sides of the filter box. The second connecting pipe is connected to the exhaust pipe through a plurality of bolt fasteners.

[0012] As a preferred technical solution of the present invention, the gas filtering structure further includes a storage component. The storage component includes a storage frame. The storage frame is slidably arranged inside the filter box. A sealing plate is fixedly arranged at the front part of the storage frame. The sealing plate is connected to the filter box through a plurality of second screws. The activated carbon filter blocks are adaptively matched with the storage frame.

[0013] As a preferred technical solution of the present invention, the bolt fastener is composed of a bolt and a nut.

[0014] As a preferred technical solution of the present invention, an auxiliary spraying structure is provided outside the vertical rod. The auxiliary spraying structure includes a water tank and a water pump. The water tank is located outside the vertical rod at the bottom of the vehicle body. A water inlet pipe is provided at the top of the water tank. The water pump is provided on the top of the vehicle body. Connecting pipes three and four are provided outside the water pump. One end of the connecting pipe three is connected through the water tank. One end of the connecting pipe four is connected through a U-shaped pipe. Both ends of the U-shaped pipe are connected through a water storage pipe. A plurality of nozzles are provided outside the water storage pipe.

[0015] As a preferred technical solution of the present invention, the first air storage tank is penetrated by a linkage rod, and the second air storage tank is penetrated by an air outlet pipe, a linkage rod, and a U-shaped pipe.

[0016] As a preferred technical solution of the present invention, the bottom of the pressing rod is higher than the top of the first fixing plate in the initial state, and the bottom of the second movable pipe is higher than the top of the air storage cylinder in the initial state.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] 1. By providing an air intake adjustment structure, it is beneficial for the detection instrument to detect according to different toxic and harmful gases, so that different toxic and harmful gases are inhaled into the corresponding gas detector body for detection work. At the same time, the original gas inside the first air extraction mechanism can be discharged. Before the first air extraction mechanism transmits the toxic and harmful gases to the gas detector body, the discharged toxic and harmful gases and air will be collected by the first air storage tank uniformly, avoiding affecting the surrounding air. The setting of the air storage cylinder and the one-way valve can enable a buffering function between the first air extraction mechanism and the gas detector body, preventing other gases from entering the air inlet pipe of the gas detector body and affecting the detection accuracy;

[0019] 2. By providing a linkage component in cooperation with the air intake adjustment structure, it is beneficial for the first fixing plate to move synchronously under the action of the pressing rod, and then the first movable pipe slides synchronously to expose the four air outlet ports outside it for exhaust work. At the same time, after the pressing rod moves upward, the first spring and the second spring act on the linkage rod to act on the first movable pipe to rebound to the initial position, so that the air outlet pipe is sealed, which can prevent the toxic and harmful gases discharged from the first movable pipe that is exhausting from entering the interior of other air outlet pipes that are not working;

[0020] 3. By setting the pressing component in cooperation with the air intake adjustment structure, it is beneficial to insert the second movable pipe into the interior of the air storage cylinder. Meanwhile, the pressing rod acts on the first fixing plate, driving the sealing ring and the linkage rod to move synchronously, blocking the four ventilation holes of the air storage cylinder to form an environment where only the second movable pipe can intake air. At the same time, the linkage rod acts on the first movable pipe through the first connecting plate to move it downward, exposing the four air outlet ports outside it, and discharging the detected toxic and harmful gases into the second air storage tank.

[0021] 4. By setting the adjustment component in cooperation with the air intake adjustment structure, it is beneficial to adjust the position of the first air extraction mechanism, enabling different toxic and harmful gases to be transported into the interior of the gas detector body for detection as needed, thereby improving the working adaptability of the detection instrument.

[0022] 5. By setting the gas filtration structure in cooperation with the air intake adjustment structure, it is beneficial to suck the toxic and harmful gases discharged from the first movable pipe after detection, the air and toxic and harmful gases discharged from the first air extraction mechanism before detection into the interior of the second air storage tank, and discharge the toxic and harmful gases inside the second air storage tank through the second air extraction mechanism. And before discharging, they are subjected to secondary treatment and filtration by several activated carbon filter blocks, minimizing the impact on the surrounding air after the detected toxic and harmful gases are discharged.

[0023] 6. By setting the storage component in cooperation with the gas filtration structure, it is beneficial to replace the activated carbon filter blocks inside the storage frame as needed, facilitating the replacement work of the activated carbon filter blocks.

[0024] 7. By setting the auxiliary spraying structure in cooperation with the gas filtration structure and the air intake adjustment structure, it is beneficial to spray water into the interior of the second air storage tank through the nozzle. And the nozzles are arranged on both sides of the only path where the toxic and harmful gases enter the exhaust pipe, which can conduct the first treatment and filtration work on the passing toxic and harmful gases, preliminarily treating the toxic and harmful gases. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic three-dimensional sectional structure diagram of an automatic toxic and harmful gas detection instrument of the present invention;

[0026] Figure 2 It is a schematic three-dimensional sectional structure diagram of the first air extraction mechanism of an automatic toxic and harmful gas detection instrument of the present invention;

[0027] Figure 3 It is a schematic three-dimensional disassembled structure diagram of the sealing ring and the air storage cylinder of an automatic toxic and harmful gas detection instrument of the present invention;

[0028] Figure 4 It is a schematic three-dimensional structure diagram of the one-way valve of an automatic toxic and harmful gas detection instrument of the present invention;

[0029] Figure 5 Schematic diagram of the sectional three-dimensional structure of the intake pipe and the exhaust pipe of an automatic toxic and harmful gas detection instrument according to the present invention;

[0030] Figure 6 Schematic diagram of the sectional three-dimensional structure of the second movable pipe of an automatic toxic and harmful gas detection instrument according to the present invention;

[0031] Figure 7 Schematic diagram of the three-dimensional structure of the gear ring of an automatic toxic and harmful gas detection instrument according to the present invention;

[0032] Figure 8 Schematic diagram of the sectional three-dimensional structure of the first gas storage tank and the second gas storage tank of an automatic toxic and harmful gas detection instrument according to the present invention;

[0033] Figure 9 Schematic diagram of the disassembled three-dimensional structure of the filter box and the storage frame of an automatic toxic and harmful gas detection instrument according to the present invention;

[0034] Figure 10 Schematic diagram of the sectional three-dimensional structure of the water tank of an automatic toxic and harmful gas detection instrument according to the present invention;

[0035] Figure 11 Schematic diagram of the overall sectional side view structure of an automatic toxic and harmful gas detection instrument according to the present invention;

[0036] Figure 12 Schematic diagram of the overall three-dimensional structure of an automatic toxic and harmful gas detection instrument according to the present invention;

[0037] Figure 13 Schematic diagram of the overall structure of an automatic toxic and harmful gas detection instrument according to the present invention from another perspective.

[0038] In the figure: 1, vehicle body; 2, vertical rod; 3, connecting block; 4, gas detector body; 5, intake pipe; 6, outlet pipe; 7, intake adjustment structure; 8, gas filtration structure; 9, auxiliary spraying structure; 10, first gas storage tank; 11, rotating disk; 12, fixing frame; 13, first air extraction mechanism; 14, air storage cylinder; 15, intake port; 16, one-way valve; 17, sealing ring; 18, first spring; 19, first fixing plate; 20, linkage rod; 21, first connecting plate; 22, first movable pipe; 23, limiting disk; 24, second spring; 25, electric push rod; 26, pressing rod; 27, second connecting plate; 28, second movable pipe; 29, second fixing plate; 30, motor; 31, gear disk; 32, gear ring; 33, second gas storage tank; 34, first connecting pipe; 35, water outlet valve port; 36, exhaust pipe; 37, support rod; 38, first screw; 39, filter box; 40, activated carbon filter block; 41, second air extraction mechanism; 42, second connecting pipe; 43, bolt fastener; 44, storage frame; 45, sealing plate; 46, second screw; 47, water tank; 48, water inlet pipe; 49, water pump; 50, third connecting pipe; 51, fourth connecting pipe; 52, U-shaped pipe; 53, water storage pipe; 54, nozzle. Detailed implementation mode

[0039] In order to make the technical means, creative features, achieved purposes and effects of the present invention easy to understand, the present invention will be further described below in conjunction with the detailed implementation mode.

[0040] As Figures 1 - 13 shown, a toxic and harmful gas automatic detection instrument includes a vehicle body 1, a vertical rod 2 is fixedly arranged on the top of the vehicle body 1, four connecting blocks 3 are fixedly arranged on the outside of the vertical rod 2, and a gas detector body 4 is fixedly arranged at one end of the connecting block 3. An intake pipe 5 and an outlet pipe 6 are respectively arranged at the top and bottom of the gas detector body 4, and an intake adjustment structure 7 is arranged at one end of the vertical rod 2;

[0041] The intake adjustment structure 7 includes a first gas storage tank 10, the first gas storage tank 10 is fixedly connected with the vertical rod 2, the first gas storage tank 10 is rotatably connected with a rotating disk 11, a fixing frame 12 is fixedly arranged on the top of the rotating disk 11, a first air extraction mechanism 13 is fixedly connected through the top of the fixing frame 12, four air storage cylinders 14 are fixedly arranged on the inner bottom surface of the first gas storage tank 10, four ventilation holes are arranged on the outside of the air storage cylinder 14, an intake port 15 is arranged on the top of the air storage cylinder 14, a one-way valve 16 is connected through the bottom of the air storage cylinder 14, and the one-way valve 16 is arranged inside the intake pipe 5 through the bottom of the first gas storage tank 10. A sealing ring 17 is slidably arranged on the outside of the air storage cylinder 14, a first spring 18 is arranged between the bottom of the sealing ring 17 and the bottom of the air storage cylinder 14, and a first fixing plate 19 is fixedly arranged on the outside of the sealing ring 17.

[0042] The intake air regulating structure 7 enables the detection instrument to detect different toxic and harmful gases, allowing different toxic and harmful gases to be inhaled into the corresponding gas detector body 4 for detection work. At the same time, the original gas inside the first air extraction mechanism 13 can be discharged. Before the first air extraction mechanism 13 transports the toxic and harmful gases to the gas detector body 4, the discharged toxic and harmful gases and air will be uniformly collected by the first air storage tank 10 to avoid affecting the surrounding air. The settings of the air storage cylinder 14 and the one-way valve 16 can enable a buffering function between the first air extraction mechanism 13 and the gas detector body 4, preventing other gases from entering the air inlet pipe 5 of the gas detector body 4 and affecting the detection accuracy.

[0043] In this embodiment, the intake air regulating structure 7 further includes four groups of linkage components. The linkage components include a linkage rod 20, and the linkage rod 20 is fixedly connected to the first fixed plate 19 at the corresponding position. One end of the linkage rod 20 penetrates through the connecting block 3 at the corresponding position and is fixedly connected to a first connecting plate 21. One end of the first connecting plate 21 is fixedly connected to a first movable tube 22. The first movable tube 22 is slidably arranged inside the air outlet pipe 6, and four air outlet openings are formed on the outer part of the first movable tube 22. A limiting disk 23 is fixedly arranged on the outer part of the linkage rod 20, and a second spring 24 is arranged between the bottom of the limiting disk 23 and the top of the connecting block 3. The second spring 24 is located around the corresponding linkage rod 20.

[0044] The linkage components can move synchronously under the action of the pressure rod 26 on the first fixed plate 19, so that the first movable tube 22 slides synchronously to expose the four air outlet openings on its outer part for exhaust work. At the same time, after the pressure rod 26 moves upward, the first spring 18 and the second spring 24 act on the linkage rod 20 to act on the first movable tube 22 to rebound to the initial position, sealing the air outlet pipe 6, so that the first movable tube 22 that is exhausting will not input the discharged toxic and harmful gases into the interior of other non-working air outlet pipes 6.

[0045] In this embodiment, the intake air regulating structure 7 further includes a downward pressing component. The downward pressing component includes an electric push rod 25. One end of the electric push rod 25 is fixedly connected to the fixed frame 12, and the other end of the electric push rod 25 is fixedly connected to a pressure rod 26. A second connecting plate 27 is fixedly connected to the outer part of the pressure rod 26. The second connecting plate 27 penetrates and is fixedly connected to a second movable tube 28. The second movable tube 28 is slidably arranged inside the first air extraction mechanism 13. The rotating disk 11 is penetrated by the pressure rod 26, and the second movable tube 28 is adaptively matched with the air inlet 15.

[0046] The pressing-down component can insert the movable pipe two 28 into the interior of the air storage cylinder 14. Meanwhile, the pressing rod 26 acts on the first fixing plate 19 to drive the sealing ring 17 and the linkage rod 20 to move synchronously, blocking the four vent holes of the air storage cylinder 14 to form an environment where only the movable pipe two 28 can intake air. At the same time, the linkage rod 20 acts on the movable pipe one 22 to move downward through the first connecting plate 21, exposing the four air outlet holes outside it, and discharging the detected toxic and harmful gases into the second air storage tank 33.

[0047] In this embodiment, the air intake adjustment structure 7 further includes an adjustment component. The adjustment component includes a second fixing plate 29, which is fixedly connected to the first air storage tank 10. A motor 30 is arranged at the bottom of the second fixing plate 29. The output shaft of the motor 30 penetrates through the second fixing plate 29 and is fixedly connected with a gear disk 31. The gear disk 31 is meshed and connected with a gear ring 32, and the gear ring 32 is fixedly connected with the rotating disk 11.

[0048] The adjustment component can adjust the position of the first air extraction mechanism 13, so that different toxic and harmful gases can be transported into the interior of the gas detector body 4 for detection as needed, improving the working adaptability of the detection instrument.

[0049] In this embodiment, a gas filtration structure 8 is arranged outside the vertical rod 2. The gas filtration structure 8 includes a second air storage tank 33 and a support rod 37. The second air storage tank 33 is fixedly arranged outside the vertical rod 2. The second air storage tank 33 and the first air storage tank 10 are connected through a first connecting pipe 34 in a penetrating manner. A water outlet valve port 35 is arranged at the bottom of the second air storage tank 33. An exhaust pipe 36 is arranged outside the second air storage tank 33. The support rod 37 is connected to the vehicle body 1 through a plurality of first screws 38. A filter box 39 is fixedly arranged at the top of the support rod 37. A plurality of activated carbon filter blocks 40 are arranged inside the filter box 39. An air extraction mechanism two 41 and a second connecting pipe 42 are respectively arranged on both sides of the filter box 39. The second connecting pipe 42 is connected to the exhaust pipe 36 through a plurality of bolt fasteners 43.

[0050] The gas filtration structure 8 can suck the toxic and harmful gases discharged from the movable pipe one 22 after detection, the air and toxic and harmful gases discharged from the first air extraction mechanism 13 before detection into the interior of the second air storage tank 33, and discharge the toxic and harmful gases inside the second air storage tank 33 through the air extraction mechanism two 41. And before discharging, they are subjected to secondary treatment and filtration by a plurality of activated carbon filter blocks 40, minimizing the impact on the surrounding air after the detected toxic and harmful gases are discharged.

[0051] In this embodiment, the gas filtration structure 8 further includes a storage component. The storage component includes a storage frame 44. The storage frame 44 is slidably arranged inside the filter box 39. A sealing plate 45 is fixedly arranged at the front part of the storage frame 44. The sealing plate 45 is connected to the filter box 39 through a plurality of second screws 46. The activated carbon filter block 40 is adaptively matched with the storage frame 44.

[0052] The storage component can replace the activated carbon filter block 40 inside the storage frame 44 as needed, facilitating the replacement work of the activated carbon filter block 40.

[0053] In this embodiment, the bolt fastener 43 is composed of a bolt and a nut.

[0054] The bolt fastener 43 connects the second connecting pipe 42 and the exhaust pipe 36.

[0055] In this embodiment, an auxiliary spraying structure 9 is arranged outside the vertical rod 2. The auxiliary spraying structure 9 includes a water tank 47 and a water pump 49. The water tank 47 is located outside the vertical rod 2 at the bottom of the vehicle body 1. A water inlet pipe 48 is arranged at the top of the water tank 47. The water pump 49 is arranged at the top of the vehicle body 1. A third connecting pipe 50 and a fourth connecting pipe 51 are arranged outside the water pump 49. One end of the third connecting pipe 50 is connected to the water tank 47 through penetration. One end of the fourth connecting pipe 51 is connected to a U-shaped pipe 52 through penetration. Both ends of the U-shaped pipe 52 are connected to a water storage pipe 53 through penetration. A plurality of spray heads 54 are arranged outside the water storage pipe 53.

[0056] The auxiliary spraying structure 9 can spray water into the inside of the second gas storage tank 33 through the spray heads 54. Moreover, the spray heads 54 are arranged on both sides of the only path where the toxic and harmful gas enters the exhaust pipe 36, and can perform the first treatment and filtration work on the passing toxic and harmful gas, so that the toxic and harmful gas is preliminarily treated.

[0057] In this embodiment, the first gas storage tank 10 is penetrated by the linkage rod 20, and the second gas storage tank 33 is penetrated by the air outlet pipe 6, the linkage rod 20, and the U-shaped pipe 52.

[0058] The first gas storage tank 10 and the second gas storage tank 33 play a role in uniformly collecting the generated toxic and harmful gas, avoiding the direct impact of the toxic and harmful gas on the surrounding air and thus affecting the physical health of the experimental detection personnel.

[0059] In this embodiment, the bottom of the pressure rod 26 is higher than the top of the first fixed plate 19 in the initial state, and the bottom of the second movable pipe 28 is higher than the top of the gas storage cylinder 14 in the initial state.

[0060] The pressure rod 26 and the second movable pipe 28 do not contact the first fixed plate 19 and the gas storage cylinder 14 in the initial state, facilitating the adjustment work of the adjustment component.

[0061] It should be noted that the present invention is an automatic detector for toxic and harmful gases. Before use, place the detector in the required location and connect an external water source to the water inlet pipe 48 to make it reach the operating conditions. In addition, Figures 11 - 13 is the initial state of the detector, that is, the bottom of the pressure rod 26 is higher than the top of the first fixed plate 19, and the bottom of the second movable pipe 28 is also higher than the top of the air storage cylinder 14;

[0062] When it is necessary to detect toxic and harmful gases, on the basis of the initial state of the detector, start the corresponding gas detector body 4, start the motor 30 to act on the gear disk 31 to drive the gear ring 32 to engage and move. After the gear ring 32 drives the rotating disk 11 and the first air extraction mechanism 13 to rotate to a predetermined position and stop, at this time, the second movable pipe 28 is located between the two air storage cylinders 14. Then, suck in the toxic and harmful gases through the first air extraction mechanism 13 and discharge them into the interior of the first air storage tank 10 through the second movable pipe 28. When the original air inside the first air extraction mechanism 13 is discharged into the interior of the first air storage tank 10, then rotate the rotating disk 11 and the first air extraction mechanism 13 to a predetermined position through the motor 30. At this time, the second movable pipe 28 is located directly above the corresponding air storage cylinder 14. Start the electric push rod 25 to act on the pressure rod 26 to move downward. The pressure rod 26 drives the second movable pipe 28 to move synchronously through the second connecting plate 27, so that the second movable pipe 28 moves toward the air inlet 15. After the pressure rod 26 contacts the first fixed plate 19, it acts on the first fixed plate 19 to drive the sealing ring 17 and the linkage rod 20 to move downward synchronously. The linkage rod 20 drives the first movable pipe 22 to move synchronously through the first connecting plate 21 until the sealing ring 17 moves down to a predetermined position. At this time, the sealing ring 17 completely seals the four ventilation holes outside the air storage cylinder 14, the second movable pipe 28 is inserted into the interior of the air storage cylinder 14, the first movable pipe 22 moves down to the maximum value, and the four air outlet holes outside the first movable pipe 22 are exposed, so that the air storage cylinder 14 forms an environment that can only intake air through the second movable pipe 28. When the toxic and harmful gases completely fill the air storage cylinder 14, under the action of the pressure, the one-way valve 16 transmits the toxic and harmful gases inside the air storage cylinder 14 to the inlet pipe 5 and enters the gas detector body 4 for detection work. After detection, the gas enters the second air storage tank 33 under the action of the outlet pipe 6 and the first movable pipe 22;

[0063] During the process, the second air extraction mechanism 41 is started. The second air extraction mechanism 41 inhales the original gas and the newly entered toxic and harmful gas inside the first storage tank 10 through the first connecting pipe 34 into the inside of the second storage tank 33. At the same time, the detected toxic and harmful gas also enters the inside of the second storage tank 33 through the air outlet pipe 6 and the first movable pipe 22. The water pump 49 is started. The water in the water tank 47 enters the water storage pipe 53 under the action of the water pump 49 through the third connecting pipe 50, the fourth connecting pipe 51 and the U-shaped pipe 52, and is finally sprayed out through the nozzle 54. Since the nozzle 54 is arranged inside the second storage tank 33 and is located at a position matching the exhaust pipe 36, when the toxic and harmful gas passes through the nozzle 54, it will be filtered for the first time. Under the action of the second air extraction mechanism 41, the toxic and harmful gas inside the second storage tank 33 enters the inside of the filter box 39 through the exhaust pipe 36 and the second connecting pipe 42, and is finally discharged under the action of the second air extraction mechanism 41. When the toxic and harmful gas passes through the filter box 39, the multiple activated carbon filter blocks 40 inside it will filter the toxic and harmful gas for the second time, minimizing the impact of the discharged toxic and harmful gas;

[0064] When it is necessary to detect other different toxic and harmful gases, the operation is the same as above. The toxic and harmful gas to be detected is adjusted by the motor 30 to the position of the first air extraction mechanism 13, and then the second movable pipe 28 is inserted into the corresponding gas storage cylinder 14, so that different toxic and harmful gases can be detected by the corresponding gas detector body 4. In addition, the water generated inside the second storage tank 33 is discharged through the water outlet valve port 35. When it is necessary to replace the activated carbon filter block 40 inside the storage frame 44, remove the second screw 46, pull out the storage frame 44 to take out the activated carbon filter block 40 at the corresponding position and put in a new one, and then push the storage frame 44 back and install the second screw 46 at the corresponding position.

Claims

1. An automatic toxic and harmful gas detection instrument, comprising a body (1), a vertical pole (2) fixedly arranged on the top of the body (1), four connecting blocks (3) fixedly arranged outside the vertical pole (2), and a gas detector body (4) fixedly arranged at one end of the connecting block (3), an air inlet pipe (5) and an air outlet pipe (6) respectively arranged on the top and bottom of the gas detector body (4), characterized in that: An air intake adjustment structure (7) is provided at one end of the vertical rod (2); The air intake regulating structure (7) comprises an air storage box (10), wherein the air storage box (10) is fixedly connected to the vertical pole (2), the air storage box (10) is rotatably connected to a rotating disk (11), a fixing frame (12) is fixedly arranged on the top of the rotating disk (11), an air extraction mechanism (13) is fixedly connected to the top of the fixing frame (12), four air cylinders (14) are fixedly arranged on the inner bottom surface of the air storage box (10), and four air vents are opened on the outside of the air cylinder (14). The top of the air storage cylinder (14) is provided with an air inlet (15), the bottom of the air storage cylinder (14) is connected to a one-way valve (16), the one-way valve (16) penetrates the bottom of the air storage box (10) and is arranged on the inner side of the air inlet pipe (5), the outside of the air storage cylinder (14) is slidably provided with a blocking ring (17), a spring (18) is provided between the bottom of the blocking ring (17) and the bottom of the air storage cylinder (14), and the outside of the blocking ring (17) is fixedly provided with a fixing plate (19); The air intake regulating structure (7) further comprises four groups of linkage components, wherein the linkage components comprise a linkage rod (20), the linkage rod (20) being fixedly connected to a fixed plate (19) at a corresponding position, one end of the linkage rod (20) passing through a connecting block (3) at a corresponding position and being fixedly connected to a connecting plate (21), one end of the connecting plate (21) being fixedly connected to a movable tube (22), the movable tube (22) being slidably arranged on the inner side of the air outlet pipe (6), and four air outlets being arranged on the outside of the movable tube (22), a limit plate (23) being fixedly arranged on the outside of the linkage rod (20), a spring (24) being arranged between the bottom of the limit plate (23) and the top of the connecting block (3), and the spring (24) being located on the periphery of the corresponding linkage rod (20); The air intake regulating structure (7) further comprises a pressing assembly, wherein the pressing assembly comprises an electric push rod (25), one end of the electric push rod (25) is fixedly connected to a fixing frame (12), the other end of the electric push rod (25) is fixedly connected to a pressing rod (26), the outside of the pressing rod (26) is fixedly connected to a second connecting plate (27), the second connecting plate (27) is penetrated and fixedly connected to a second movable tube (28), the second movable tube (28) is slidably arranged on the inner side of the first exhaust mechanism (13), the rotating disk (11) is penetrated by the pressing rod (26), and the second movable tube (28) and the air intake port (15) are adaptively matched; A gas filtering structure (8) is arranged outside the upright pole (2), and the gas filtering structure (8) comprises a second gas storage box (33) and a support rod (37). The second gas storage box (33) is fixedly arranged outside the upright pole (2), the second gas storage box (33) and the first gas storage box (10) are connected through a connecting pipe (34), a water outlet valve (35) is arranged at the bottom of the second gas storage box (33), an exhaust pipe (36) is opened outside the second gas storage box (33), the support rod (37) is connected to the vehicle body (1) through a plurality of first screws (38), a filter box (39) is fixedly arranged on the top of the support rod (37), a plurality of activated carbon filter blocks (40) are arranged inside the filter box (39), a second air extraction mechanism (41) and a second connecting pipe (42) are arranged on both sides of the filter box (39), and the second connecting pipe (42) is connected to the exhaust pipe (36) through a plurality of bolt fasteners (43); In an initial state, the bottom of the pressure rod (26) is higher than the top of the first fixed plate (19), and the bottom of the second movable tube (28) is higher than the top of the gas storage cylinder (14) in an initial state.

2. The automatic detection instrument for toxic and harmful gases according to claim 1 is characterized in that: The air intake regulating structure (7) further comprises a regulating assembly, the regulating assembly comprising a second fixing plate (29), the second fixing plate (29) being fixedly connected to the first air storage box (10), a motor (30) being arranged at the bottom of the second fixing plate (29), an output shaft of the motor (30) passing through the second fixing plate (29) and being fixedly connected to a gear plate (31), the gear plate (31) being meshingly connected to a gear ring (32), and the gear ring (32) being fixedly connected to the rotating plate (11).

3. The automatic detection instrument for toxic and harmful gases according to claim 1 is characterized in that: The gas filtering structure (8) further comprises a storage component, the storage component comprising a storage frame (44), the storage frame (44) being slidably disposed on the inner side of the filter box (39), a sealing plate (45) being fixedly disposed on the front of the storage frame (44), the sealing plate (45) being connected to the filter box (39) via a plurality of screws (46), and the activated carbon filter block (40) and the storage frame (44) being adaptively matched.

4. The automatic detection instrument for toxic and harmful gases according to claim 1 is characterized in that: The bolt fastener (43) consists of a bolt and a nut.

5. The automatic detection instrument for toxic and harmful gases according to claim 1 is characterized in that: An auxiliary spraying structure (9) is arranged outside the upright pole (2), and the auxiliary spraying structure (9) comprises a water tank (47) and a water pump (49). The water tank (47) is located outside the upright pole (2) at the bottom of the vehicle body (1). A water inlet pipe (48) is arranged on the top of the water tank (47). The water pump (49) is arranged on the top of the vehicle body (1). A connecting pipe 3 (50) and a connecting pipe 4 (51) are arranged outside the water pump (49). One end of the connecting pipe 3 (50) is connected to the water tank (47). One end of the connecting pipe 4 (51) is connected to a U-shaped pipe (52). Both ends of the U-shaped pipe (52) are connected to water storage pipes (53). A plurality of spray heads (54) are arranged outside the water storage pipe (53).

6. The automatic detection instrument for toxic and harmful gases according to claim 5 is characterized in that: The first air storage box (10) is penetrated by a linkage rod (20), and the second air storage box (33) is penetrated by an air outlet pipe (6), a linkage rod (20), and a U-shaped tube (52).

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