Automatic poisonous and harmful gas detection instrument

Abstract

The invention discloses an automatic toxic and harmful gas detection instrument, and relates to the technical field of gas detection, the automatic toxic and harmful gas detection instrument comprises a vehicle body, a vertical rod is fixedly arranged at the top of the vehicle body, four connecting blocks are fixedly arranged outside the vertical rod, and a gas detector body is fixedly arranged at one end of each connecting block; a gas inlet pipe and a gas outlet pipe are respectively arranged at the top and the bottom of the gas detector body, a gas inlet adjusting structure is arranged at one end of the vertical rod, the gas inlet adjusting structure comprises a gas storage tank I, the gas storage tank I is fixedly connected with the vertical rod, and the gas storage tank I is rotatably connected with a rotating disc. According to the automatic detection instrument for the toxic and harmful gases, different gases can be detected respectively, the gases of the first air exhaust mechanism can be exhausted before detection, and meanwhile, the air exhausted by the first air exhaust mechanism and the toxic and harmful gases are collected in a unified manner, so that the influence on ambient air is avoided.

Description

Technical Field

[0001] The invention relates to the technical field of gas detection, and in particular to an automatic detection instrument for toxic and harmful gases. Background Art

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

[0003] However, when traditional detection instruments are used in laboratories, toxic and harmful gases are usually sucked into the gas detector body for detection. When detecting different gases, different gases will be sucked into the same detector for detection, which will affect the accuracy of the detection. Different gases cannot be detected separately, and the suction mechanism itself has gas before suction, which also affects the accuracy of the detection. Therefore, the present invention proposes an automatic detection instrument for toxic and harmful gases. Summary of the invention

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

[0005] To achieve the above object, the technical solution adopted by the present invention is: An automatic detection instrument for toxic and harmful gases, comprising a body, a vertical pole fixedly arranged on the top of the body, four connecting blocks fixedly arranged on the outside of the vertical pole, and a gas detector body fixedly arranged at one end of the connecting block, an air inlet pipe and an air outlet pipe respectively arranged at the top and bottom of the gas detector body, and an air inlet regulating structure arranged at one end of the vertical pole; The air intake regulating structure includes an air storage box, which is fixedly connected to a vertical pole, a rotating disk rotatably connected to the air storage box, a fixing frame is fixedly provided on the top of the rotating disk, a suction mechanism is fixedly connected to the top of the fixing frame, four air cylinders are fixedly provided on the inner bottom surface of the air storage box, four air vents are provided on the outside of the air cylinder, an air inlet is provided on the top of the air cylinder, a one-way valve is connected to the bottom of the air storage box, the one-way valve passes through the bottom of the air storage box and is arranged on the inner side of the air intake pipe, a sealing ring is slidably provided on the outside of the air cylinder, a spring is provided between the bottom of the sealing ring and the bottom of the air cylinder, and a fixing plate is fixedly provided on the outside of the sealing ring.

[0006] As a preferred technical solution of the present invention, the air intake adjustment structure also includes four groups of linkage components, the linkage components including a linkage rod, the linkage rod is fixedly connected to a fixed plate 1 at a corresponding position, one end of the linkage rod passes through a connecting block at a corresponding position and is fixedly connected to a connecting plate 1, one end of the connecting plate 1 is fixedly connected to a movable tube 1, the movable tube 1 is slidably arranged on the inner side of the air outlet pipe, and four air outlets are opened on the outside of the movable tube 1, a limit plate is fixedly arranged on the outside of the linkage rod, a spring 2 is arranged between the bottom of the limit plate and the top of the connecting block, and the spring 2 is located on the periphery of the corresponding linkage rod.

[0007] As a preferred technical solution of the present invention, the air intake regulating structure also includes a downward pressure component, which includes an electric push rod, one end of the electric push rod is fixedly connected to a fixed frame, the other end of the electric push rod is fixedly connected to a pressure rod, the outside of the pressure rod is fixedly connected to a connecting plate 2, the connecting plate 2 is penetrated and fixedly connected with a movable tube 2, the movable tube 2 is slidably arranged on the inner side of the exhaust mechanism 1, the rotating disk is penetrated by the pressure rod, and the movable tube 2 and the air inlet are adaptively matched.

[0008] As a preferred technical solution of the present invention, the air intake adjustment structure also includes an adjustment component, which includes a fixed plate 2, the fixed plate 2 and the air storage box 1 are fixedly connected, a motor is provided at the bottom of the fixed plate 2, the output shaft of the motor passes through the fixed plate 2 and is fixedly connected with a gear plate, the gear plate is meshed with a gear ring, and the gear ring is fixedly connected to the rotating plate.

[0009] As a preferred technical solution of the present invention, a gas filtering structure is arranged on the outside of the vertical pole, and the gas filtering structure includes an air storage box 2 and a support rod. The air storage box 2 is fixedly arranged on the outside of the vertical pole, and the air storage box 2 and the air storage box 1 are connected through a connecting pipe 1. A water outlet valve port is arranged at the bottom of the air storage box 2, and an exhaust pipe is opened on the outside of the air storage box 2. The support rod is connected to the vehicle body by a plurality of screws 1, and a filter box is fixedly arranged on the top of the support rod, and a plurality of activated carbon filter blocks are arranged on the inner side of the filter box. A vacuum mechanism 2 and a connecting pipe 2 are respectively arranged on both sides of the filter box, and the connecting pipe 2 is connected to the exhaust pipe by a plurality of bolt fasteners.

[0010] As a preferred technical solution of the present invention, the gas filtration structure also includes a storage component, the storage component includes a storage frame, the storage frame is slidably arranged on the inner side of the filter box, a sealing plate is fixedly arranged on the front of the storage frame, the sealing plate is connected to the filter box by a plurality of screws, and the activated carbon filter block and the storage frame are adaptively matched.

[0011] As a preferred technical solution of the present invention, the bolt fastener consists of a bolt and a nut.

[0012] As a preferred technical solution of the present invention, an auxiliary spraying structure is arranged on the outside of the vertical pole, and the auxiliary spraying structure includes a water tank and a water pump. The water tank is located outside the bottom vertical pole of the vehicle body, and a water inlet pipe is arranged on the top of the water tank. The water pump is arranged on the top of the vehicle body, and connecting pipe three and connecting pipe four are arranged on the outside of the water pump. One end of the connecting pipe three is connected to the water tank, and one end of the connecting pipe four is connected to a U-shaped pipe. Both ends of the U-shaped pipe are connected to water storage pipes, and a plurality of nozzles are arranged on the outside of the water storage pipe.

[0013] As a preferred technical solution of the present invention, the first air storage box is penetrated by a linkage rod, and the second air storage box is penetrated by an air outlet pipe, a linkage rod, and a U-shaped tube.

[0014] As a preferred technical solution of the present invention, the bottom of the pressure rod is higher than the top of the fixed plate 1 in the initial state, and the bottom of the movable tube 2 is also higher than the top of the air storage cylinder in the initial state.

[0015] Compared with the prior art, the present invention has the following beneficial effects: 1. By setting up the 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 sucked into the corresponding gas detector body for detection. At the same time, the original gas inside the exhaust mechanism 1 can be discharged. Before the exhaust mechanism 1 transmits the toxic and harmful gases to the gas detector body, the exhausted toxic and harmful gases and air will be uniformly collected by the gas storage box 1 to avoid affecting the surrounding air. The setting of the gas storage cylinder and the one-way valve can make the exhaust mechanism 1 and the gas detector body have a buffer function to avoid other gases in the intake pipe of the gas detector body, which affects the accuracy of the detection; 2. By setting a linkage assembly to cooperate with the air intake adjustment structure, it is beneficial for the fixed plate 1 to move synchronously under the action of the pressure rod, so that the movable tube 1 slides synchronously to expose the four air outlets outside it for exhaust work. At the same time, after the pressure rod moves up, the spring 1 and the spring 2 act on the linkage rod to act on the movable tube 1 to rebound to the initial position, so that the air outlet pipe is sealed, so that the toxic and harmful gas discharged by the exhausting movable tube 1 will not be input into the interior of other non-working air outlet pipes; 3. By setting a downward pressure assembly in conjunction with the air intake adjustment structure, it is convenient to insert the movable tube 2 into the interior of the gas storage cylinder. At the same time, the pressure rod acts on the fixed plate 1 to move the blocking ring and the linkage rod synchronously, blocking the four vents of the gas storage cylinder so that the gas storage cylinder forms an environment where only the movable tube 2 can take in air. At the same time, the linkage rod acts on the movable tube through the connecting plate 1 to move downward, exposing the four air outlets outside the movable tube, and discharging the detected toxic and harmful gases into the gas storage box 2; 4. By setting the adjustment component in conjunction with the air intake adjustment structure, it is helpful to adjust the position of the exhaust mechanism 1, so that different toxic and harmful gases can be transported to the inside of the gas detector body for detection as needed, thereby improving the working adaptability of the detection instrument; 5. By setting up a gas filtering structure in conjunction with an air intake regulating structure, it is beneficial to draw the toxic and harmful gases discharged from the movable pipe 1 after detection, the air and toxic and harmful gases discharged from the exhaust mechanism 1 before detection into the interior of the gas storage box 2, and the toxic and harmful gases inside the gas storage box 2 are discharged through the exhaust mechanism 2, and are subjected to secondary treatment and filtration by a number of activated carbon filter blocks before discharge, so that the impact of the toxic and harmful gases after detection on the surrounding air is minimized after being discharged; 6. By arranging the storage component in conjunction with the gas filtering structure, it is beneficial to replace the activated carbon filter block inside the storage frame as needed, thereby facilitating the replacement of the activated carbon filter block; 7. By setting up an auxiliary spraying structure in conjunction with the gas filtering structure and the air intake regulating structure, it is beneficial to spray water into the interior of the gas storage box 2 through the nozzle, and the nozzle is set on both sides of the necessary path for toxic and harmful gases to enter the exhaust pipe, which can perform the first treatment and filtration work on the toxic and harmful gases passing through, so that the toxic and harmful gases can be preliminarily treated. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the overall cross-sectional three-dimensional structure of an automatic detection instrument for toxic and harmful gases of the present invention; Figure 2 It is a cross-sectional three-dimensional structural schematic diagram of an exhaust mechanism 1 of an automatic detection instrument for toxic and harmful gases of the present invention; Figure 3 It is a schematic diagram of the disassembled three-dimensional structure of a sealing ring and a gas storage cylinder of an automatic detection instrument for toxic and harmful gases of the present invention; Figure 4 It is a three-dimensional structural schematic diagram of a one-way valve of an automatic detection instrument for toxic and harmful gases of the present invention; Figure 5 It is a cross-sectional three-dimensional structural diagram of an air inlet pipe and an air outlet pipe of an automatic detection instrument for toxic and harmful gases of the present invention; Figure 6 It is a cross-sectional three-dimensional structural schematic diagram of a movable tube 2 of an automatic detection instrument for toxic and harmful gases of the present invention; Figure 7 It is a three-dimensional structural schematic diagram of a gear ring of an automatic detection instrument for toxic and harmful gases of the present invention; Figure 8 It is a cross-sectional three-dimensional structural schematic diagram of a gas storage box 1 and a gas storage box 2 of an automatic detection instrument for toxic and harmful gases of the present invention; Fig. 9It is a schematic diagram of the split three-dimensional structure of a filter box and a storage frame of an automatic detection instrument for toxic and harmful gases of the present invention; Fig.10 A schematic diagram of the cross-sectional three-dimensional structure of a water tank of an automatic detection instrument for toxic and harmful gases according to the present invention; Fig.11 It is a schematic diagram of the overall cross-section side view of an automatic detection instrument for toxic and harmful gases of the present invention; Fig.12 This is a schematic diagram of the overall three-dimensional structure of an automatic detection instrument for toxic and harmful gases of the present invention; Fig.13 This is a schematic diagram of the overall structure of an automatic detection instrument for toxic and harmful gases of the present invention from another perspective.

[0017] In the figure: 1, vehicle body; 2, upright pole; 3, connecting block; 4, gas detector body; 5, air inlet pipe; 6, air outlet pipe; 7, air inlet adjustment structure; 8, gas filtering structure; 9, auxiliary spraying structure; 10, gas storage box 1; 11, rotating disk; 12, fixed frame; 13, air extraction mechanism 1; 14, gas storage cylinder; 15, air inlet; 16, one-way valve; 17, blocking ring; 18, spring 1; 19, fixed plate 1; 20, linkage rod; 21, connecting plate 1; 22, movable tube 1; 23, limit plate; 24, spring 2; 25, electric push rod; 26, pressure rod; 27, connecting plate 2; 28. Movable pipe 2; 29. ​​Fixed plate 2; 30. Motor; 31. Gear plate; 32. Gear ring; 33. Air storage box 2; 34. Connecting pipe 1; 35. Water outlet valve; 36. Exhaust pipe; 37. Support rod; 38. Screw 1; 39. Filter box; 40. Activated carbon filter block; 41. Exhaust mechanism 2; 42. Connecting pipe 2; 43. Bolt fastener; 44. Storage frame; 45. Sealing plate; 46. Screw 2; 47. Water tank; 48. Water inlet pipe; 49. Water pump; 50. Connecting pipe 3; 51. Connecting pipe 4; 52. U-shaped pipe; 53. Water storage pipe; 54. Sprinkler. DETAILED DESCRIPTION

[0018] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0019] like Figure 1-Figure 13 As shown, an automatic detection instrument for toxic and harmful gases comprises a body 1, a vertical pole 2 is fixedly arranged on the top of the body 1, four connecting blocks 3 are fixedly arranged on the outside of the vertical pole 2, and a gas detector body 4 is fixedly arranged at one end of the connecting block 3, an air inlet pipe 5 and an air outlet pipe 6 are respectively arranged at the top and bottom of the gas detector body 4, and an air inlet adjustment structure 7 is arranged at one end of the vertical pole 2; The air intake regulating structure 7 comprises an air storage box 10, which is fixedly connected to the upright pole 2, and the air storage box 10 is rotatably connected to a rotating disk 11, a fixing frame 12 is fixedly provided on the top of the rotating disk 11, and a suction mechanism 13 is fixedly connected to the top of the fixing frame 12, and four air cylinders 14 are fixedly provided on the inner bottom surface of the air storage box 10, and four air vents are provided on the outside of the air cylinder 14, and an air inlet 15 is provided on the top of the air cylinder 14, and a one-way valve 16 is penetrated and connected to the bottom of the air cylinder 14, and the one-way valve 16 penetrates the bottom of the air storage box 10 and is arranged on the inner side of the air intake pipe 5, and a sealing ring 17 is slidably provided on the outside of the air cylinder 14, and a spring 18 is provided between the bottom of the sealing ring 17 and the bottom of the air cylinder 14, and a fixing plate 19 is fixedly provided on the outside of the sealing ring 17.

[0020] The air intake adjustment structure 7 can enable the detection instrument to detect different toxic and harmful gases, so that different toxic and harmful gases are sucked into the corresponding gas detector body 4 for detection. At the same time, the original gas inside the exhaust mechanism 13 can be discharged. Before the exhaust mechanism 13 transmits the toxic and harmful gases to the gas detector body 4, the exhausted toxic and harmful gases and air will be collected by the gas storage box 10 to avoid affecting the surrounding air. The setting of the gas storage cylinder 14 and the one-way valve 16 can make the exhaust mechanism 13 and the gas detector body 4 have a buffer function to avoid other gases in the air intake pipe 5 of the gas detector body 4, which affects the accuracy of the detection.

[0021] In this embodiment, the air intake regulating structure 7 also includes four groups of linkage components, which include a linkage rod 20, which is fixedly connected to a fixed plate 19 at a corresponding position, one end of the linkage rod 20 passes through a connecting block 3 at a corresponding position and is fixedly connected to a connecting plate 21, one end of the connecting plate 21 is fixedly connected to a movable tube 22, the movable tube 22 is slidably arranged on the inner side of the air outlet pipe 6, and four air outlets are provided on the outside of the movable tube 22, a limit plate 23 is fixedly arranged on the outside of the linkage rod 20, a spring 24 is arranged between the bottom of the limit plate 23 and the top of the connecting block 3, and the spring 24 is located on the periphery of the corresponding linkage rod 20.

[0022] The linkage assembly can move synchronously with the fixed plate 19 under the action of the pressure rod 26, so that the movable tube 22 can slide synchronously to expose its four external air outlets for exhaust work. At the same time, after the pressure rod 26 moves up, the spring 18 and the spring 24 act on the linkage rod 20 to act on the movable tube 22 to rebound to the initial position, so that the air outlet pipe 6 is sealed, so that the active tube 22 that is exhausting will not input the toxic and harmful gases it discharges into the interior of other air outlet pipes 6 that are not working.

[0023] In this embodiment, the air intake regulating structure 7 also includes a downward pressure component, which 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. The outside of the pressure rod 26 is fixedly connected to a connecting plate 27, and the connecting plate 27 is penetrated and fixedly connected with a movable tube 28. The movable tube 28 is slidably arranged on the inner side of the exhaust mechanism 13, and the rotating disk 11 is penetrated by the pressure rod 26, and the movable tube 28 and the air inlet 15 are adaptively matched.

[0024] The pressing assembly can make the movable tube 28 inserted into the interior of the gas cylinder 14. At the same time, the pressing rod 26 acts on the fixed plate 19 to move the sealing ring 17 and the linkage rod 20 synchronously, and the four air holes of the gas cylinder 14 are blocked so that the gas cylinder 14 forms an environment that can only be inhaled by the movable tube 28. At the same time, the linkage rod 20 acts on the movable tube 22 through the connecting plate 21 to move downward, exposing its four external air outlets, and discharging the detected toxic and harmful gases into the gas storage box 2 33.

[0025] In this embodiment, the air intake regulating structure 7 also includes a regulating component, which includes a fixed plate 29, the fixed plate 29 and the air storage box 10 are fixedly connected, a motor 30 is arranged at the bottom of the fixed plate 29, the output shaft of the motor 30 passes through the fixed plate 29 and is fixedly connected to a gear plate 31, the gear plate 31 is meshedly connected to a gear ring 32, and the gear ring 32 and the rotating disk 11 are fixedly connected.

[0026] The adjustment component can adjust the position of the exhaust mechanism 13, so that different toxic and harmful gases can be transported to the interior of the gas detector body 4 for detection as needed, thereby improving the working adaptability of the detection instrument.

[0027] In this embodiment, a gas filtering structure 8 is provided on the outside of the vertical pole 2, and the gas filtering structure 8 includes an air storage box 33 and a support rod 37. The air storage box 33 is fixedly provided on the outside of the vertical pole 2, and the air storage box 33 and the air storage box 10 are connected through a connecting pipe 34. A water outlet valve port 35 is provided at the bottom of the air storage box 33, and an exhaust pipe 36 is provided on the outside of the air storage box 33. The support rod 37 is connected to the vehicle body 1 through a plurality of screws 38. A filter box 39 is fixedly provided on the top of the support rod 37, and a plurality of activated carbon filter blocks 40 are provided on the inner side of the filter box 39. A vacuum mechanism 41 and a connecting pipe 42 are respectively provided on both sides of the filter box 39, and the connecting pipe 42 is connected to the exhaust pipe 36 through a plurality of bolt fasteners 43.

[0028] The gas filtering structure 8 can suck the toxic and harmful gases discharged from the movable tube 22 after detection, the air and toxic and harmful gases discharged from the exhaust mechanism 13 before detection into the interior of the gas storage box 33, and discharge the toxic and harmful gases inside the gas storage box 33 through the exhaust mechanism 41, and perform secondary treatment and filtration by a number of activated carbon filter blocks 40 before discharge, so as to minimize the impact of the toxic and harmful gases after detection on the surrounding air after discharge.

[0029] In this embodiment, the gas filtering structure 8 also includes a storage component, which includes a storage frame 44. The storage frame 44 is slidably arranged on the inner side of the filter box 39. A sealing plate 45 is fixedly arranged on the front of the storage frame 44. The sealing plate 45 is connected to the filter box 39 by a plurality of screws 46. The activated carbon filter block 40 and the storage frame 44 are adaptively matched.

[0030] The storage component can replace the activated carbon filter block 40 inside the storage frame 44 as needed, which is convenient for replacing the activated carbon filter block 40.

[0031] In this embodiment, the bolt fastener 43 is composed of a bolt and a nut.

[0032] The bolt fastener 43 connects the connecting pipe 2 42 and the exhaust pipe 36 .

[0033] In this embodiment, an auxiliary spraying structure 9 is arranged outside the vertical pole 2, and the auxiliary spraying structure 9 includes a water tank 47 and a water pump 49. The water tank 47 is located outside the vertical pole 2 at the bottom of the vehicle body 1, and 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, and a connecting pipe three 50 and a connecting pipe four 51 are arranged outside the water pump 49. One end of the connecting pipe three 50 is connected to the water tank 47, and one end of the connecting pipe four 51 is connected to a U-shaped pipe 52. Both ends of the U-shaped pipe 52 are connected to water storage pipes 53, and a plurality of nozzles 54 are arranged outside the water storage pipe 53.

[0034] The auxiliary spraying structure 9 can spray water into the interior of the gas storage box 33 through the nozzle 54, and the nozzle 54 is arranged on both sides of the path that toxic and harmful gases must pass through to enter the exhaust pipe 36, so that the toxic and harmful gases passing through can be subjected to the first treatment and filtration work, so that the toxic and harmful gases are preliminarily treated.

[0035] In this embodiment, the air storage box 1 10 is penetrated by the linkage rod 20 , and the air storage box 2 33 is penetrated by the air outlet pipe 6 , the linkage rod 20 , and the U-shaped tube 52 .

[0036] The gas storage box 10 and the gas storage box 2 33 play a role in uniformly collecting the generated toxic and harmful gases, thereby preventing the toxic and harmful gases from directly affecting the surrounding air and thus affecting the health of the experimental testers.

[0037] In this embodiment, the bottom of the pressure rod 26 is higher than the top of the fixed plate 19 in the initial state, and the bottom of the movable tube 28 is also higher than the top of the gas storage cylinder 14 in the initial state.

[0038] The pressure rod 26 and the movable tube 2 28 are not in contact with the fixed plate 1 19 and the air storage cylinder 14 in the initial state, which facilitates the adjustment work of the adjustment assembly.

[0039] It should be noted that the present invention is an automatic detection instrument for toxic and harmful gases. Before use, the detection instrument is placed in a desired location and an external water source is connected to the water inlet pipe 48 to enable it to reach the working operating conditions. In addition, Figure 11-13 To detect the initial state of the instrument, the bottom of the pressure rod 26 is higher than the top of the fixed plate 19, and the bottom of the movable tube 28 is also higher than the top of the gas storage cylinder 14; When it is necessary to detect toxic and harmful gases, based on the initial state of the detection instrument, the corresponding gas detector body 4 is started, and the starting motor 30 acts on the gear plate 31 to engage the gear ring 32. The gear ring 32 rotates the rotating disk 11 and the air extraction mechanism 13 to a predetermined position and then stops. At this time, the movable tube 28 is located between the two gas storage cylinders 14, and then the toxic and harmful gases are sucked in through the air extraction mechanism 13 and discharged into the interior of the gas storage box 10 through the movable tube 28. When the original air in the air extraction mechanism 13 is discharged to the interior of the gas storage box 10, the rotating disk 11 and the air extraction mechanism 13 are rotated to the predetermined position by the motor 30. At this time, the movable tube 28 is located directly above the corresponding gas storage cylinder 14, and the electric push rod 25 is started to act on the pressure rod 26 to move downward. The pressure rod 26 moves synchronously with the movable tube 28 through the connecting plate 27, so that the movable tube 2 28 moves toward the air inlet 15, and after the pressure rod 26 contacts the fixed plate 19, it acts on the fixed plate 19 to move the blocking ring 17 and the linkage rod 20 downward synchronously, and the linkage rod 20 moves synchronously with the movable tube 12 through the connecting plate 121 until the blocking ring 17 moves downward to the predetermined position. At this time, the blocking ring 17 completely blocks the four vents on the outside of the gas storage cylinder 14, and the movable tube 28 is inserted into the inside of the gas storage cylinder 14. The movable tube 12 moves downward to the maximum value and exposes the four air outlets on the outside of the movable tube 12, so that the gas storage cylinder 14 forms an environment where air can only be taken in through the movable tube 28. When the toxic and harmful gas completely fills the gas storage cylinder 14, the one-way valve 16 transmits the toxic and harmful gas inside the gas storage cylinder 14 to the inside of the air inlet pipe 5 under the action of pressure, and enters the gas detector body 4 for detection. After the detection, the gas enters the gas storage box 2 33 under the action of the outlet pipe 6 and the movable tube 12; During the process, the second suction mechanism 41 is started, and the second suction mechanism 41 sucks the original gas in the gas storage box 10 and the newly entered toxic and harmful gas into the gas storage box 2 33 through the connecting pipe 1 34. At the same time, the toxic and harmful gas after detection also enters the gas storage box 2 33 through the outlet pipe 6 and the movable pipe 1 22. The water pump 49 is started, and the water in the water tank 47 enters the water storage pipe 53 through the connecting pipe 3 50, the connecting pipe 4 51 and the U-shaped pipe 52 under the action of the water pump 49, and is finally sprayed out through the nozzle 54. Since the nozzle 54 is arranged at the gas storage The inside of the second box 33 is located at the matching position of the exhaust pipe 36, so when the toxic and harmful gas passes through the nozzle 54, it will be processed and filtered for the first time. Under the action of the second exhaust mechanism 41, the toxic and harmful gas inside the second air storage box 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 exhaust mechanism 41. When the toxic and harmful gas passes through the filter box 39, the multiple activated carbon filter blocks 40 inside it will perform secondary processing and filtration on the toxic and harmful gas, so that the impact of the discharged toxic and harmful gas is minimized; When it is necessary to detect other toxic and harmful gases, the same as the above operation, the position of the exhaust mechanism 13 is adjusted through the motor 30 for the toxic and harmful gases to be detected, and then the movable tube 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 gas storage box 33 is discharged through the water outlet valve 35. When it is necessary to replace the activated carbon filter block 40 inside the storage frame 44, remove the screw 2 46, pull out the storage frame 44, take out the activated carbon filter block 40 at the corresponding position and put a new one, then push the storage frame 44 back and install the screw 2 46 to 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) passes through 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).

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 four groups of linkage components, the linkage components comprising 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 opened 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).

3. The automatic detection instrument for toxic and harmful gases according to claim 2 is characterized in that: 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.

4. The automatic detection instrument for toxic and harmful gases according to claim 3 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).

5. The automatic detection instrument for toxic and harmful gases according to claim 4 is characterized in that: 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), and 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), and 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), and 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 respectively 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).

6. The automatic detection instrument for toxic and harmful gases according to claim 5 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.

7. The automatic detection instrument for toxic and harmful gases according to claim 5 is characterized in that: The bolt fastener (43) consists of a bolt and a nut.

8. The automatic detection instrument for toxic and harmful gases according to claim 5 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).

9. The automatic detection instrument for toxic and harmful gases according to claim 8, 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).

10. The automatic detection instrument for toxic and harmful gases according to claim 3 is characterized in that: The bottom of the pressure rod (26) is higher than the top of the fixed plate 1 (19) in the initial state, and the bottom of the movable tube 2 (28) is also higher than the top of the air storage cylinder (14) in the initial state.

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