A portable chemical agent alarm detector

Abstract

This application relates to the technical field of chemical agent alarm detection, in particular to a portable chemical agent alarm detector, which includes a detection box. The bottom of the detection box is provided with moving wheels. A through groove is formed in the side wall of the detection box, and a detection mechanism is arranged inside the through groove. An air intake mechanism is arranged on the top of the detection box; in the detection mechanism designed by the present invention, the gas entering through the air inlet pipe can diffuse on the paper tape and react with the reagent on the paper tape. Then, the concentration of harmful gas can be determined according to the size of the color change range of the reagent on the paper tape. At the same time, by comparing the moving trajectory of the detection box with the paper tape, the specific position of the harmful gas can be judged, and the practicability is stronger.

Description

Technical Field

[0001] This application relates to the technical field of chemical agent alarm detection, and particularly to a portable chemical agent alarm detector. Background Art

[0002] In recent years, with the continuous improvement of industrialization, the pollutant emissions in the factory production process have also increased day by day, including various toxic gases. These toxic gases pose a serious threat to human health and the environment. Therefore, it is of great significance to effectively and quickly identify and monitor factory toxic gases.

[0003] For example, the patent application with the publication number CN218766857U discloses a portable air detector, belonging to the technical field of air detectors. The air detector body is slid upward through a sliding component, and at the same time, a transmission component is used to drive the flip cover at the top of the protective shell to rotate upward and open, so that the detection probe at the top of the air detector body is located outside the protective shell for air detection, thereby improving the protection effect of the detection probe. Moreover, the opening and closing design of the flip cover is convenient and fast, making the operation more convenient.

[0004] Since the leakage of toxic gases will diffuse in the air, the above-mentioned existing technology can also be used to detect and process the factory toxic gases diffused in the air. However, there are still some defects: 1. Since the concentration of toxic gases in the environment is unknown, and the above-mentioned existing technology needs to be worn on the staff to detect and process the environment, it causes greater harm to the staff's body during this process, and the practicability is poor.

[0005] 2. The detection probe of the above patent application is relatively single in height during the environmental detection process and cannot move to a higher position to detect harmful gases in the environment. Therefore, it cannot quickly and efficiently detect different positions in the environment, the detection range is relatively narrow, and the specific position of harmful gases cannot be determined during the environmental monitoring process, and the device has limitations in use.

[0006] Based on this, under the statement of the above viewpoints, there is still room for improvement in the existing technology for detecting harmful gases. Summary of the Invention

[0007] To solve the above technical problems, this application provides a portable chemical agent alarm detector, including a detection box. Moving wheels are provided at the bottom of the detection box. A through groove is provided on the side wall of the detection box, and a detection mechanism is arranged inside the through groove. An air suction mechanism is provided on the top of the detection box.

[0008] The detection mechanism includes: a release roller, which is installed on one side of the inner wall of the through groove through a bearing, and a winding roller corresponding to the release roller is installed on the other side of the inner wall of the through groove through a bearing.

[0009] The paper tape is wound on a release roller, one end of the paper tape away from the release roller is adhered to a winding roller, and a reagent that reacts with the toxic gas to change the color of the paper tape is smeared on the paper tape.

[0010] The air inlet pipe is installed through the top of the detection box and matched with the paper tape, and a section of the air inlet pipe close to the paper tape rests on the paper tape.

[0011] The air suction mechanism comprises a swing block arranged on the top of the detection box.

[0012] The telescopic tube penetrates and is clamped on the swing block.

[0013] The rubber hose is arranged between the telescopic tube and the air intake pipe and is used for connecting the telescopic tube and the air intake pipe.

[0014] Preferably, a vertical frame is provided on the top of the detection box, a swing shaft is rotatably installed on the vertical frame through a bearing, and a swing block is installed on the swing shaft, a linkage rod is installed on the circumferential surface of the swing shaft and on the side away from the swing block, an arc-shaped rack plate is installed on the end of the linkage rod away from the swing shaft, and a straight rack plate for driving the arc-shaped rack plate to swing back and forth is provided on the top of the detection box.

[0015] Preferably, the top of the detection box is provided with a linkage block that moves along the width direction of the through groove, and the spur rack plate is installed on the linkage block, a bidirectional screw is installed inside the through groove through a bearing, and the bidirectional screw passes through the linkage block, the linkage block and the bidirectional screw are connected by a threaded transmission, and the winding roller and the bidirectional screw are connected to each other by a belt transmission.

[0016] Preferably, sealing strips are symmetrically installed on the linkage block along the width direction of the through groove, and a counterweight is installed at one end of the sealing strip away from the linkage block, and the counterweight is arranged on the side wall of the detection box.

[0017] Preferably, a fixing plate is provided on the outer wall of the telescopic tube, an electric push rod is mounted on the fixing plate, a linkage horizontal plate is mounted on the telescopic end of the telescopic tube, and the telescopic end of the electric push rod is mounted on the linkage horizontal plate.

[0018] Preferably, a connection block threadedly connected to the telescopic pipe is provided at one end of the rubber hose, and an end of the rubber hose away from the connection block is through-connected to the air intake pipe.

[0019] The top of the detection box is slidably provided with an automatically reset moving block, a fixed pulley is rotatably provided on the moving block through a supporting protrusion, and the rubber hose is arranged on the fixed pulley.

[0020] Preferably, an elastic telescopic rod cooperating with the release roller is installed at the top of the through groove. The telescopic end of the elastic telescopic rod is provided with a lifting plate, and a sponge is installed on the lifting plate. A reagent kit containing reagents is installed on the lifting plate, and an output pipe communicating with the reagent kit and used for introducing the reagent into the sponge is installed on the reagent kit.

[0021] Preferably, horizontal shafts are symmetrically arranged along the length direction of the through groove on the inner wall of the through groove and between the release roller and the winding roller, and the horizontal shafts are installed on the inner wall of the through groove through bearings.

[0022] Preferably, a concentration sensor is installed on the part of the air inlet pipe located at the top of the detection box. A buzzer alarm and a central control component electrically connected to the concentration sensor and the buzzer alarm are also installed on the detection box.

[0023] Preferably, the central control component includes a central control panel arranged on the detection box and a central control unit arranged inside the central control panel. The central control unit includes a central control module, a concentration sensing module electrically connected to the central control module, and a buzzer alarm module electrically connected to the central control module.

[0024] The concentration sensing module is electrically connected to the concentration sensor, and the buzzer alarm module is electrically connected to the buzzer alarm.

[0025] In summary, the present application includes at least one of the following beneficial technical effects:

[0026] 1. In the detection mechanism designed by the present invention, the gas entering through the air inlet pipe can diffuse on the paper tape and react with the reagent on the paper tape. Then, the concentration of harmful gas can be determined according to the size of the color change range of the reagent on the paper tape. At the same time, by comparing the movement trajectory of the detection box with the paper tape, the specific position of the harmful gas can be judged, and the practicability is stronger.

[0027] 2. In the air suction mechanism of the present invention, during the swinging process of the swing block, it cooperates with the telescopic pipe to sample and detect the air at different positions in the environment, so as to increase the sample volume of the sampled air and make the detection result more representative.

[0028] 3. The concentration sensor of the present invention, combined with the central control component and the buzzer alarm, can automatically monitor whether there is toxic gas in the air, eliminating the need for the cumbersome operation of observing the paper tape, realizing the rapid and convenient detection of toxic gas, and improving the efficiency and accuracy of safety monitoring. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 is a three-dimensional structural schematic diagram of the present invention.

[0030] Figure 2 is a three-dimensional structural schematic diagram inside the through groove of the present invention.

[0031] Figure 3 It is a schematic diagram of the three-dimensional installation structure among the swing block, the detection box and the telescopic tube of the present invention.

[0032] Figure 4 The present invention Figure 3 A partial enlarged view of point A.

[0033] Figure 5 It is a schematic diagram of the three-dimensional installation structure between the linkage rod, the arc-shaped rack plate and the straight rack plate of the present invention.

[0034] Figure 6 The present invention Figure 5 A partial enlarged view of point B.

[0035] Figure 7 It is a schematic diagram of the three-dimensional installation structure between the vertical frame and the swing block of the present invention.

[0036] Figure 8 The present invention Figure 7 A partial enlarged view of point C.

[0037] Figure 9 It is an electrical flow chart of the present invention.

[0038] Figure 10 It is a schematic diagram of the three-dimensional installation structure between the rectangular groove, the adjustment block and the electric cylinder of the present invention.

[0039] Description of the reference numerals: 1. detection box; 11. vertical frame; 12. swing shaft; 13. linkage rod; 14. arc-shaped rack plate; 15. straight rack plate; 16. linkage block; 161. sealing strip; 162. counterweight block; 17. bidirectional screw; 2. through slot; 21. elastic telescopic rod; 22. lifting plate; 23. sponge; 24. reagent box; 25. output tube; 26. horizontal axis; 3. detection mechanism; 31. release roller; 3 2. Winding roller; 33. Paper tape; 34. Air inlet pipe; 341. Concentration sensor; 4. Air suction mechanism; 41. Swing block; 42. Telescopic tube; 421. Fixed plate; 422. Electric push rod; 423. Linkage cross plate; 43. Rubber hose; 431. Connecting block; 432. Moving block; 433. Fixed pulley; 5. Rectangular groove; 51. Adjusting block; 52. Telescopic spring rod; 53. Electric cylinder; 54. Give way slider. DETAILED DESCRIPTION

[0040] The following is combined with Figures 1 to 10 This application is described in further detail.

[0041] The embodiment of the present application discloses a portable toxic agent alarm detector, which can perform sampling detection on gases at different locations, and can determine whether the environment contains toxic gases, and the concentration and location of the toxic gases when toxic gases are contained. Example 1

[0042] Reference Figures 1 to 3 , a portable poison gas alarm detector, including a detection box 1, a moving wheel is arranged at the bottom of the detection box 1, a through groove 2 is opened on the side wall of the detection box 1, a detection mechanism 3 is arranged inside the through groove 2, and an air suction mechanism 4 is arranged on the top of the detection box 1.

[0043] The detection mechanism 3 includes: a release roller 31, which is installed on one side of the inner wall of the through groove 2 through a bearing, and a winding roller 32 corresponding to the release roller 31 is installed on the other side of the inner wall of the through groove 2 through a bearing.

[0044] A paper tape 33 is wound around the release roller 31. One end of the paper tape 33 away from the release roller 31 adheres to the winding roller 32, and a reagent that reacts with the toxic gas to change the color of the paper tape 33 is applied on the paper tape 33.

[0045] An air inlet pipe 34 is installed through the top of the detection box 1 and cooperates with the paper tape 33. A section of the air inlet pipe 34 close to the paper tape 33 abuts against the paper tape 33.

[0046] The air suction mechanism 4 includes: a swing block 41, which is arranged on the top of the detection box 1.

[0047] A telescopic pipe 42 is clamped through the swing block 41.

[0048] A rubber hose 43 is arranged between the telescopic pipe 42 and the air inlet pipe 34 and is used to connect the telescopic pipe 42 and the air inlet pipe 34.

[0049] At the starting position, the release roller 31 is wound with the full paper tape 33. A waterproof coating is applied to the side of the paper tape 33 away from the air inlet pipe 34. When the toxic gas diffuses on the paper tape 33, it can react with the reagent to change color. The waterproof coating can prevent the side of the paper tape 33 with the reagent from adsorbing the toxic gas and adhering to the back of the paper tape 33 after the paper tape 33 is wound up, resulting in the reagent adsorbed with the toxic gas adhering to the back of the paper tape 33, which may cause the color on the side of the paper tape 33 with the adhered reagent to become lighter, and the staff may make a misjudgment when observing the result, resulting in an error in the detection result.

[0050] During the swinging process of the swing block 41, it cooperates with the telescopic pipe 42 to sample the air at different positions in the environment, so as to increase the sample volume of the sampled air and make the detection result more representative.

[0051] The gas entering through the air inlet pipe 34 can diffuse on the paper tape 33 and react with the reagent on the paper tape 33. Then, according to the size of the color change range of the reagent on the paper tape 33, the concentration of the harmful gas can be determined. At the same time, by comparing the moving trajectory of the detection box 1 with the paper tape 33, the specific position of the harmful gas can be judged, and the practicability is stronger.

[0052] Sealing covers are arranged on both sides of the through groove 2 to reduce the possibility of external gas flowing into the through groove 2 and contaminating the paper tape 33. During specific operation, the detection box 1 is placed in the environment to be detected. At this time, the detection box 1 is driven by an existing driving force (such as a moving trolley) and the moving wheels to move in the environment to be detected. During the movement of the detection box 1, an existing driving motor (not shown in the figure) drives the winding roller 32 to rotate through a belt drive. During the rotation of the winding roller 32, the paper tape 33 on the release roller 31 can be wound.

[0053] Refer to Figure 4 , an elastic telescopic rod 21 that cooperates with the release roller 31 is installed at the top of the through groove 2. The telescopic end of the elastic telescopic rod 21 is provided with a lifting plate 22, and a sponge 23 is installed on the lifting plate 22. A reagent kit 24 containing reagents is installed on the lifting plate 22, and an output pipe 25 that is in communication with the reagent kit 24 and is used to introduce the reagent into the sponge 23 is installed on the reagent kit 24.

[0054] During the rotation of the winding roller 32, the paper tape 33 can be wound and collected. At this time, the part of the paper tape 33 between the release roller 31 and the winding roller 32 is in the moving process. The reagent kit 24 introduces the reagent into the sponge 23 through the output pipe 25 at this time. At this time, the reagent completely diffuses inside the sponge 23. When the paper tape 33 moves, the sponge 23 can apply the reagent on the paper tape 33.

[0055] The elastic telescopic rod 21 can adaptively adjust the height of the lifting plate 22 according to the thickness of the paper tape 33 on the release roller 31, so that the lifting plate 22 drives the sponge 23 to always closely adhere to the paper tape 33, thereby ensuring that the reagent on the paper tape 33 is always evenly distributed, and further ensuring the reaction effect between the subsequent toxic gas and the reagent, and avoiding the possibility of errors in the detection results due to uneven distribution of the reagent on the paper tape 33.

[0056] A ratchet is installed on the release roller 31, and a detachable pawl that cooperates with the ratchet is arranged on the inner wall of the through groove 2. When the winding roller winds the paper tape 33, the ratchet and the pawl cooperate with each other to drive the release roller 31 to orderly release the paper tape 33, avoiding the possibility that the paper tape 33 is completely drawn out at one time and scattered inside the through groove 2, and improving the release and winding effect of the paper tape 33; when it is necessary to observe the detection paper tape 33, the pawl is removed, and at this time the release roller 31 can rotate freely, facilitating the staff to pull the paper tape 33.

[0057] Refer to Figure 6 , a fixing plate 421 is arranged on the outer wall of the telescopic tube 42. An electric push rod 422 is installed on the fixing plate 421. A linkage cross plate 423 is installed at the telescopic end of the telescopic tube 42, and the telescopic end of the electric push rod 422 is installed on the linkage cross plate 423.

[0058] After the preparation of the paper tape 33 is completed, the electric push rod 422 is started at this time. During the movement of the telescopic end of the electric push rod 422, the telescopic end of the telescopic pipe 42 is driven to move through the linkage cross plate 423. At this time, the telescopic pipe 42 is pulled open, and the telescopic pipe 42 is pulled by a certain length according to the required height. At this time, gas is pumped into the air inlet pipe 34 through an existing air pump (not shown in the figure). A pressure difference appears inside the telescopic pipe 42 and the rubber hose 43, and then the external gas can be pressed into the existing air pump. The telescopic end of the telescopic pipe 42 can collect and process the gas at different heights in the environment. The collected gas diffuses on the paper tape 33 after passing through the telescopic pipe 42, the rubber hose 43, and the air inlet pipe 34.

[0059] Furthermore, through the above steps, the height of the telescopic end of the telescopic pipe 42 can be changed. Furthermore, the telescopic end of the telescopic pipe 42 can sample and collect the gas at different heights, ensuring that the experimental data is more representative.

[0060] Refer to Figure 5 and Figure 6 For the sake of increasing the sampling range of the telescopic pipe 42, the swinging block 41 provided in the present invention can drive the telescopic pipe 42 to swing around the swing shaft 12. Specifically, a vertical frame 11 is provided at the top of the detection box 1. The swing shaft 12 is rotatably installed through the vertical frame 11 by means of a bearing, and the swinging block 41 is installed on the swing shaft 12. A linkage rod 13 is installed on the circumferential surface of the swing shaft 12 and on the side away from the swinging block 41. One end of the linkage rod 13 away from the swing shaft 12 is installed with an arc-shaped rack plate 14. A straight rack plate 15 for driving the arc-shaped rack plate 14 to swing reciprocally is provided at the top of the detection box 1.

[0061] During specific operation, the straight rack plate 15 is reciprocally pushed and pulled. During the reciprocating movement of the straight rack plate 15, it cooperates with the arc-shaped rack plate 14 to drive the linkage rod 13 to swing around the swing shaft 12. During the swinging of the swing shaft 12, the swinging block 41 is driven to swing. During the swinging of the swinging block 41, the telescopic pipe 42 is driven to swing around the swing shaft 12, so that the swinging path of the telescopic pipe 42 is an arc-shaped structure. Furthermore, the sampling range of the telescopic end of the telescopic pipe 42 can be increased to increase the sample volume of the sampled air, making the detection result more representative.

[0062] Refer to Figure 5 For the sake of reducing the use of the existing drive, the linkage block 16, the bidirectional screw 17 and the winding roller 32 provided in the present invention cooperate with each other to drive the straight rack plate 15 to reciprocally move. The linkage block 16 that moves along the width direction of the through groove 2 is provided at the top of the detection box 1 in a limited way through the through hole, and the straight rack plate 15 is installed on the linkage block 16. The bidirectional screw 17 is installed in the through groove 2 through a bearing, and the bidirectional screw 17 penetrates through the linkage block 16. The linkage block 16 and the bidirectional screw 17 are connected by a thread transmission method. The winding roller 32 and the bidirectional screw 17 are connected to each other by a belt transmission method.

[0063] During specific operation, when the winding roller 32 rotates, it drives the bidirectional screw 17 through a belt drive. During the rotation of the bidirectional screw 17, the linkage block 16 is driven to reciprocate on the top of the detection box 1. Then, during the reciprocating movement of the linkage block 16, the straight rack plate 15 is driven to reciprocate. Thus, by sharing the drive with the winding roller 32, the reciprocating movement of the straight rack plate 15 can be achieved.

[0064] Refer to Figure 5 , since the linkage block 16 reciprocates, a through groove for making way for it needs to be opened on the detection box 1. To prevent external gas from entering the through groove 2 through the through groove, the sealing strip 161 provided in the present invention can isolate the external gas from the through groove 2. Specifically, the sealing strips 161 are symmetrically installed on the linkage block 16 along the width direction of the through groove 2, and a counterweight block 162 is installed at one end of the sealing strip 161 away from the linkage block 16, and the counterweight block 162 is arranged on the side wall of the detection box 1.

[0065] When the linkage block 16 moves, the linkage block 16 drives the sealing strip 161 away from its moving direction to move. At this time, the sealing strip 161 close to its moving direction is driven to move synchronously by the counterweight block 162. Then, during the movement of the linkage block 16, through the mutual cooperation of the counterweight block 162 and the sealing strip 161, it can be ensured that the through groove is always in a closed state, and the counterweight block 162 always ensures that the sealing strip 161 is in close contact with the through groove, reducing the possibility of external air entering the through groove 2.

[0066] Refer to Figure 7 and Figure 8 , one end of the rubber hose 43 is provided with a connection block 431 threadedly connected to the telescopic tube 42, and the end of the rubber hose 43 away from the connection block 431 is connected to the air inlet pipe 34 in a through manner.

[0067] A movable block 432 with automatic reset is slidably arranged on the top of the detection box 1. A fixed pulley 433 is rotatably arranged on the movable block 432 through a support protrusion, and the rubber hose 43 is arranged on the fixed pulley 433.

[0068] A fixed protrusion is arranged on the detection box 1, and a telescopic spring rod 52 is jointly installed between the fixed protrusion and the movable block 432 for resetting the movable block 432. During specific operation, at the starting position, the air inlet pipe 34 is communicated with the telescopic tube 42 through the rubber hose 43. When the swing block 41 swings to the side away from the fixed protrusion, the telescopic tube 42 pulls the rubber hose 43 to move through the connection block 431, and the telescopic spring rod 52 is stretched. At this time, the rubber hose 43 drives the movable block 432 to move to the side away from the fixed protrusion through the mutual cooperation of the fixed pulley 433 and the support protrusion. When the swing block 41 swings to the side close to the fixed one, the telescopic tube 42 pulls the rubber hose 43 to reset through the connection block 431, and the telescopic spring rod 52 resets synchronously to drive the movable block 432 to reset.

[0069] Furthermore, through the above steps, the rubber hose 43 can adaptively change according to the distance change between the telescopic tube 42 and the intake pipe 34 to ensure that the telescopic tube 42 and the intake pipe 34 are always in communication. At the same time, the fixed pulley 433 and the telescopic spring rod 52 cooperate with each other to ensure that the rubber hose 43 is always in a taut state, preventing the rubber hose 43 from falling on the detection box 1. At the same time, the rubber hose 43 can overcome the pressure between it and the fixed pulley 433, that is, the part of the rubber hose 43 in contact with the fixed pulley 433 will not deform (the pipe diameter decreases) due to the pressure exerted by the fixed pulley 433.

[0070] Looking back Figure 2 , horizontal shafts 26 are symmetrically arranged along the length direction of the through groove 2 on the inner wall of the through groove 2 and located between the release roller 31 and the winding roller 32, and the horizontal shafts 26 are installed on the inner wall of the through groove 2 through bearings.

[0071] Among them, the paper tape 33 is located above the two horizontal shafts 26. The two horizontal shafts 26 cooperate with each other to ensure that the paper tape 33 is always in a flat state during the movement process, preventing the paper tape 33 between the winding roller 32 and the release roller 31 from tilting due to the change in the thickness of the paper tape 33, which may cause the intake pipe 34 to be in poor contact with the paper tape 33, and improving the effect of the gas inside the intake pipe 34 diffusing on the paper tape 33.

[0072] After all the detections are completed, the detection box 1 is moved out of the area to be detected, the sealing cover plate is opened, and the paper tape 33 is taken out.

[0073] According to whether the reagent on the paper tape 33 changes color, it is further detected whether there are harmful gases in the detection area.

[0074] According to the size of the discoloration range on the paper tape 33, if the discoloration range of the reagent on the paper tape 33 is large, it indicates that the concentration of the toxic gas sampled at the telescopic end of the telescopic tube 42 is high at this time; conversely, the concentration is low.

[0075] Then, by comparing the movement trajectory of the detection box 1 with the length of the paper tape 33 and the discoloration range on the paper tape 33, the specific location of the harmful gas can be determined, and the applicable range is wider.

[0076] Refer to Figure 8 and Figure 9, since the environment does not necessarily contain toxic gases or the content of toxic gases does not exceed the value harmful to the human body. If the air does not contain toxic gases, it is not necessary to check the paper tape 33 after the above detection. The concentration sensor 341 provided by the present invention cooperates with the buzzer alarm to determine whether there are toxic gases in the air. Specifically, a concentration sensor 341 is installed at the part of the air inlet pipe 34 located at the top of the detection box 1. A buzzer alarm and a central control component electrically connected to the concentration sensor 341 and the buzzer alarm are also installed on the detection box 1.

[0077] The central control component includes a central control panel arranged on the detection box 1 and a central control unit arranged inside the central control panel. The central control unit includes a central control module, a concentration sensing module electrically connected to the central control module, and a buzzer alarm module electrically connected to the central control module.

[0078] The concentration sensing module is electrically connected to the concentration sensor 341, and the buzzer alarm module is electrically connected to the buzzer alarm.

[0079] During specific operation, the gas passing through the telescopic tube 42 enters the inside of the air inlet pipe 34 through the rubber hose 43. At this time, the concentration sensor 341 detects and processes the gas entering the air inlet pipe 34. If there are toxic gases in the gas, the concentration sensor 341 transmits the concentration information of the toxic gases to the concentration sensing module. After processing the above information, the concentration sensing module transmits it to the central control module. After processing the obtained information, the central control module transmits it to the buzzer alarm module. The buzzer alarm module collects and processes the information transmitted by the central processing module and then transmits it to the buzzer alarm, and the buzzer alarm gives an alarm. At this time, the staff can determine whether there are toxic gases in the environment to be detected.

[0080] Furthermore, whether there are toxic gases in the environment can be determined through the above steps. If there are toxic gases in the environment, the concentration and location of the toxic gases are determined in cooperation with the above detection mechanism 3 and the air suction mechanism 4.

[0081] The vertical frame 11 is installed on the detection box 1 in a detachable manner. After the detection is completed, the connecting block 431 is removed from the bottom of the telescopic tube 42. At this time, the vertical frame 11 is removed, and then the telescopic tube 42 is removed, thereby reducing the external volume of the detection and facilitating the transportation and handling of subsequent detections. When it is necessary to use it again, the vertical frame 11 is re-connected to the starting position, and the telescopic tube 42 is reset so that the connecting block 431 is connected to the telescopic tube 42. Embodiment 2

[0082] Refer to Figure 10On the basis of the first embodiment, the present invention can also increase the height of the detection box 1 and cooperate with the telescopic tube 42 to sample gases at different positions in the environment. Specifically, a rectangular groove 5 is provided at the bottom of the detection box 1, and adjustment blocks 51 are symmetrically arranged inside the rectangular groove 5 along the length direction of the groove 2. A telescopic spring rod 52 is installed between the two adjustment blocks 51, and a guide slope is provided on the adjustment block 51. At this time, the moving wheel is installed at the bottom of the adjustment block 51, and an electric cylinder 53 is installed on the top of the adjustment block 51. A yielding slider 54 is installed on the top of the telescopic end of the electric cylinder 53, and the yielding slider 54 is slidably arranged on the top of the rectangular groove 5.

[0083] When in the starting position, the telescopic spring rod 52 is in a compressed state, and the side wall of the detection box 1 is against the guiding slope. During operation, the electric cylinder 53 is started. During the movement of the telescopic end of the electric cylinder 53, the detection box 1 is driven to move upward through the giving way slider 54. Before the detection box 1 passes over the top of the guiding slope, the two adjustment blocks 51 do not move due to the obstruction of the side wall of the detection box 1. After the side wall of the detection box 1 passes over the guiding slope, the detection box 1 continues to move upward to the specified height. At this time, the telescopic spring rod 52 is reset to drive the two adjustment blocks 51 to move away from each other. During the movement of the adjustment block 51, the giving way slider 54 moves synchronously on the top of the rectangular groove 5. As a result, the force area applied to the ground by the moving wheels of the detection box 1 is increased, thereby ensuring the stability of the detection box 1 after being raised and avoiding the tipping of the detection box 1.

[0084] When the adjustment block 51 moves to the final position, the projection of the inner side wall of the detection box 1 on the vertical plane is still located on the guiding slope. When the detection is completed, the telescopic end of the electric cylinder 53 contracts, and the detection box 1 moves down. When the detection box 1 moves down to the side wall of the guiding slope, the detection box 1 continues to move down. The side wall of the detection box 1 cooperates with the guiding slope to drive the adjustment block 51 to move into the rectangular groove 5. At this time, the telescopic spring rod 52 is compressed, and the adjustment block 51 is retracted into the rectangular groove 5, which is convenient for the subsequent transportation of the detection box 1.

[0085] The implementation principle of the present invention is:

[0086] (1): The paper tape 33 can be wound and collected during the rotation of the winding roller 32. At this time, the portion of the paper tape 33 between the release roller 31 and the winding roller 32 is in the process of moving. The reagent reagent 24 is introduced into the sponge 23 through the output tube 25. At this time, the reagent is completely diffused in the sponge 23. When the paper tape 33 is moving, the sponge 23 can smear the reagent on the paper tape 33.

[0087] (2): Start the electric push rod 422. During the movement of the telescopic end of the electric push rod 422, the telescopic end of the telescopic pipe 42 is driven to move through the linkage cross plate 423. At this time, the telescopic pipe 42 is pulled open, and the telescopic pipe 42 is pulled by a certain length according to the required height. At this time, gas is pumped into the intake pipe 34 through an existing air pump. A pressure difference appears inside the telescopic pipe 42 and the rubber hose 43, and then external gas can be pressed into the existing air pump. The telescopic end of the telescopic pipe 42 can collect and process gases at different heights in the environment. The collected gas diffuses on the paper tape 33 after passing through the telescopic pipe 42, the rubber hose 43, and the intake pipe 34.

[0088] (3): After all detections are completed, the detection box 1 is removed from the area to be detected, the sealing cover plate is opened, and the paper tape 33 is taken out to observe the color change on the paper tape 33.

[0089] For those skilled in the art, it is obvious that the present invention is not limited to the details of the above exemplary embodiments, and the present invention can be implemented in other specific forms without departing from the spirit or basic characteristics of the present invention. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting. The scope of the present invention is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present invention. Any reference signs in the claims should not be regarded as limiting the claimed rights.

[0090] In addition, it should be understood that although this specification is described according to embodiments, not every embodiment only contains an independent technical solution. This narrative way of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A portable poison alarm detector, comprising a detection box (1), wherein the bottom of the detection box (1) is provided with moving wheels, characterized in that: The side wall of the detection box (1) is provided with a through groove (2), a detection mechanism (3) is arranged inside the through groove (2), and an air suction mechanism (4) is arranged on the top of the detection box (1), wherein: The detection mechanism (3) comprises: a release roller (31) installed on one side of the inner wall of the through groove (2) through a bearing, and a winding roller (32) corresponding to the release roller (31) is installed on the other side of the inner wall of the through groove (2) through a bearing; a paper tape (33) is wound on the release roller (31), and one end of the paper tape (33) away from the release roller (31) adheres to the winding roller (32), and a reagent that reacts with toxic gas to change the color of the paper tape (33) is smeared on the paper tape (33); an air inlet pipe (34) is installed through the top of the detection box (1) and cooperates with the paper tape (33), and a section of the air inlet pipe (34) close to the paper tape (33) abuts against the paper tape (33); a side of the paper tape (33) away from the air inlet pipe (34) is smeared with a waterproof coating; The air suction mechanism (4) comprises: a swing block (41) arranged on the top of the detection box (1); a telescopic tube (42) penetrating and clamped on the swing block (41); a rubber hose (43) arranged between the telescopic tube (42) and the air inlet pipe (34) and used to connect the telescopic tube (42) and the air inlet pipe (34); The detection box (1) is provided with a vertical frame (11) on the top, a swing shaft (12) is rotatably installed on the vertical frame (11) through a bearing, and a swing block (41) is installed on the swing shaft (12), a linkage rod (13) is installed on the circumferential surface of the swing shaft (12) and on the side away from the swing block (41), and an arc-shaped rack plate (14) is installed on the end of the linkage rod (13) away from the swing shaft (12), and a straight rack plate (15) for driving the arc-shaped rack plate (14) to swing back and forth is provided on the top of the detection box (1); A fixing plate (421) is arranged on the outer wall of the telescopic tube (42), an electric push rod (422) is installed on the fixing plate (421), a linkage horizontal plate (423) is installed on the telescopic end of the telescopic tube (42), and the telescopic end of the electric push rod (422) is installed on the linkage horizontal plate (423); A rectangular groove (5) is provided at the bottom of the detection box (1), and adjustment blocks (51) are symmetrically arranged inside the rectangular groove (5) along the length direction of the through groove (2), a telescopic spring rod (52) is installed between the two adjustment blocks (51), and a guide inclined surface is arranged on the adjustment block (51), a moving wheel is installed at the bottom of the adjustment block (51), an electric cylinder (53) is installed on the top of each adjustment block (51), a yielding slide block (54) is installed at the top of the telescopic end of the electric cylinder (53), and the yielding slide block (54) is slidably arranged on the top of the rectangular groove (5), when in the starting position, the telescopic spring rod (52) is in a compressed state, and the side wall of the detection box (1) is against the guide inclined surface.

2. A portable poison alarm detector according to claim 1, characterized in that: The detection box (1) is provided with a linkage block (16) at the top through-limiting portion thereof and is movable along the width direction of the through-groove (2), and the spur rack plate (15) is mounted on the linkage block (16), a bidirectional screw (17) is mounted inside the through-groove (2) via a bearing, and the bidirectional screw (17) penetrates the linkage block (16), the linkage block (16) and the bidirectional screw (17) are connected to each other via a threaded transmission, and the winding roller (32) and the bidirectional screw (17) are connected to each other via a belt transmission.

3. A portable poison alarm detector according to claim 2, characterized in that: The linkage block (16) is symmetrically provided with a sealing strip (161) along the width direction of the through slot (2), and a counterweight (162) is provided at one end of the sealing strip (161) away from the linkage block (16), and the counterweight (162) is arranged on the side wall of the detection box (1).

4. A portable poison alarm detector according to claim 1, characterized in that: One end of the rubber hose (43) is provided with a connection block (431) threadedly connected to the telescopic tube (42), and one end of the rubber hose (43) away from the connection block (431) is connected to the air intake pipe (34); The top of the detection box (1) is slidably provided with an automatically reset moving block (432), a fixed pulley (433) is rotatably provided on the moving block (432) via a supporting protrusion, and the rubber hose (43) is arranged on the fixed pulley (433).

5. A portable poison alarm detector according to claim 1, characterized in that: The top of the through groove (2) is provided with an elastic telescopic rod (21) matched with a release roller (31), the telescopic end of the elastic telescopic rod (21) is provided with a lifting plate (22), a sponge (23) is provided on the lifting plate (22), a reagent box (24) containing a reagent is provided on the lifting plate (22), and an output pipe (25) which is connected with the reagent box and used for introducing the reagent into the sponge (23) is provided on the reagent box (24).

6. A portable poison alarm detector according to claim 1, characterized in that: A horizontal axis (26) is symmetrically arranged on the inner wall of the through groove (2) and between the release roller (31) and the winding roller (32) along the length direction of the through groove (2), and the horizontal axis (26) is installed on the inner wall of the through groove (2) through a bearing.

7. A portable poison alarm detector according to claim 1, characterized in that: The portion of the air inlet pipe (34) located at the top of the detection box (1) is installed with a concentration sensor (341), and the detection box (1) is also installed with a buzzer alarm and a central control component electrically connected to the concentration sensor (341) and the buzzer alarm.

8. A portable poison alarm detector according to claim 7, characterized in that: The central control component comprises a central control panel arranged on the detection box (1) and a central control unit arranged inside the central control panel, wherein the central control unit comprises a central control module, a concentration sensing module electrically connected to the central control module, and a buzzer alarm module electrically connected to the central control module; the concentration sensing module is electrically connected to the concentration sensor (341), and the buzzer alarm module is electrically connected to the buzzer alarm.

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