Portable toxic agent alarm detector

Abstract

The invention relates to the technical field of toxic agent alarm detection, in particular to a portable toxic agent alarm detector which comprises a detection box, moving wheels are arranged at the bottom of the detection box, a through groove is formed in the side wall of the detection box, a detection mechanism is arranged in the through groove, and an air suction mechanism is arranged at the top of the detection box. In the detection mechanism designed by the invention, gas entering from the gas inlet pipe can diffuse on the paper tape and react with a reagent on the paper tape, so that the concentration of harmful gas can be determined according to the color change range of the reagent on the paper tape, and meanwhile, the specific position of the harmful gas can be judged according to the comparison between the moving track of the detection box and the paper tape, so that the practicability is higher.

Description

Technical Field

[0001] The present application relates to the technical field of toxic agent alarm detection, and in particular to a portable toxic agent alarm detector. Background Art

[0002] In recent years, with the continuous improvement of industrialization, the emission of pollutants in factory production processes has also increased, including a variety of toxic gases, which 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, a patent application with publication number CN218766857U discloses a portable air detector, which belongs to the technical field of air detectors. The air detector body is slid upward by a sliding component, and the transmission component is used to drive the flip cover on the top of the protective shell to rotate upward and open, so that the detection probe on 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, and the opening and closing design of the flip cover is convenient and quick, making it more convenient to operate.

[0004] Since toxic gas leakage will diffuse in the air, the above-mentioned existing technology can also be used to detect and treat factory toxic gases in the air, but there are still some defects: 1. Since the concentration of toxic gases in the environment is unknown, the above-mentioned existing technology needs to be worn by the staff to detect and treat the environment, which causes great harm to the staff's body in the process and has poor practicality.

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

[0006] Based on this, and in accordance with the above-mentioned viewpoints, there is still room for improvement in the existing technology for detecting harmful gases. Summary of the invention

[0007] In order to solve the above technical problems, the present application provides a portable toxic agent alarm detector, including a detection box, a movable wheel is arranged at the bottom of the detection box, a through groove is opened on the side wall of the detection box, a detection mechanism is arranged inside the through groove, and an air suction mechanism is arranged on the top of the detection box.

[0008] The detection mechanism comprises: 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 a release roller is installed on the top of the through groove, a lifting plate is installed on the telescopic end of the elastic telescopic rod, a sponge is installed on the lifting plate, a reagent box containing reagents is installed on the lifting plate, and an output tube is installed on the reagent box, which is connected with the reagent box and is used to introduce reagents into the sponge.

[0021] Preferably, a horizontal axis is symmetrically arranged on the inner wall of the through groove and located between the release roller and the winding roller along the length direction of the through groove, and the horizontal axis is installed on the inner wall of the through groove through a bearing.

[0022] Preferably, a concentration sensor is installed at the portion of the air inlet pipe located at the top of the detection box, and 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, wherein the central control unit includes a central control module, a concentration sensor 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: 1. In the detection mechanism designed by the present invention, the gas entering from the air inlet pipe can diffuse on the paper tape and react with the reagent on the paper tape, and then the concentration of the harmful gas can be determined according to the color change range of the reagent on the paper tape. At the same time, the specific location of the harmful gas can be determined by comparing the moving trajectory of the detection box with the paper tape, which is more practical.

[0026] 2. In the air suction mechanism of the present invention, the swing block cooperates with the telescopic tube during the swinging process 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.

[0027] 3. The concentration sensor of the present invention can automatically monitor whether the air contains toxic gases by combining with the central control component and the buzzer alarm, without the need for cumbersome observation paper tape operations, thereby achieving rapid and convenient detection of toxic gases and improving the efficiency and accuracy of safety monitoring. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a three-dimensional structural schematic diagram of the present invention.

[0029] Figure 2 It is a schematic diagram of the internal three-dimensional structure of the through groove of the present invention.

[0030] Figure 3It 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.

[0031] Figure 4 The present invention Figure 3 A partial enlarged view of point A.

[0032] 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.

[0033] Figure 6 The present invention Figure 5 A partial enlarged view of point B.

[0034] 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.

[0035] Figure 8 The present invention Figure 7 A partial enlarged view of point C.

[0036] Fig. 9 It is an electrical flow chart of the present invention.

[0037] Fig.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.

[0038] 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

[0039] The following is combined with Figures 1 to 10 This application is described in further detail.

[0040] 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

[0041] Reference Figures 1 to 3 A portable toxic agent alarm detector comprises a detection box 1, a movable 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.

[0042] The detection mechanism 3 comprises: a release roller 31 mounted on one side of the inner wall of the through groove 2 via a bearing, and a winding roller 32 corresponding to the release roller 31 mounted on the other side of the inner wall of the through groove 2 via a bearing.

[0043] The paper tape 33 is wound on the release roller 31, and one end of the paper tape 33 away from the release roller 31 is adhered to the winding roller 32, and the paper tape 33 is coated with a reagent that reacts with the toxic gas to change the color of the paper tape 33.

[0044] The air inlet pipe 34 is installed through the top of the detection box 1 and matches 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 .

[0045] The air suction mechanism 4 comprises a swing block 41 , which is arranged on the top of the detection box 1 .

[0046] The telescopic tube 42 penetrates through and is clamped on the swing block 41 .

[0047] The rubber hose 43 is disposed between the telescopic tube 42 and the air intake pipe 34 , and is used to connect the telescopic tube 42 and the air intake pipe 34 .

[0048] At the starting position, the release roller 31 is fully wound with paper tape 33, wherein the side of the paper tape 33 away from the air inlet pipe 34 is coated with a waterproof coating. When toxic gas diffuses on the paper tape 33, it can react with the reagent to change color. The waterproof coating can prevent the paper tape 33 from adsorbing toxic gas on the side with the reagent after it is wound up and then adhering to the back side of the paper tape 33, causing the reagent adsorbed with toxic gas to adhere to the back side of the paper tape 33, resulting in the possibility of lighter color on the side of the paper tape 33 with the reagent adhering, and the staff may make misjudgments when observing the results, resulting in errors in the test results.

[0049] During the swinging process, the swing block 41 cooperates with the telescopic tube 42 to perform sampling detection on 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.

[0050] The gas entering from the air inlet pipe 34 can diffuse on the paper tape 33 and react with the reagent on the paper tape 33, and then determine the concentration of the harmful gas according to the color change range of the reagent on the paper tape 33. At the same time, the specific location of the harmful gas can be determined by comparing the moving trajectory of the detection box 1 with the paper tape 33, which is more practical.

[0051] Sealing covers are provided on both sides of the through groove 2 to reduce the possibility of external gas flowing into the through groove 2 and causing contamination of the paper tape 33. During operation, the detection box 1 is placed in the environment to be detected. At this time, the existing driving force (moving trolley, etc.) cooperates with the moving wheels to drive the detection box 1 to move in the environment to be detected. During the movement of the detection box 1, the existing driving motor (not shown in the figure) drives the winding roller 32 to rotate through a belt transmission. During the rotation of the winding roller 32, the paper tape 33 on the release roller 31 can be wound.

[0052] Reference Figure 4 An elastic telescopic rod 21 that cooperates with the release roller 31 is installed at the top of the through-groove 2, a lifting plate 22 is installed at the telescopic end of the elastic telescopic rod 21, and a sponge 23 is installed on the lifting plate 22, a reagent box 24 containing reagents is installed on the lifting plate 22, and an output tube 25 that is connected with the reagent box and is used to pass the reagent into the sponge 23 is installed on the reagent box 24.

[0053] The paper tape 33 can be wound and collected during the rotation of the winding roller 32. At this time, the part of the paper tape 33 located 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 moves, the sponge 23 can smear the reagent on the paper tape 33.

[0054] 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 be close to the paper tape 33, thereby ensuring that the reagent on the paper tape 33 is always evenly distributed, thereby ensuring the subsequent reaction effect of the 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.

[0055] A ratchet is installed on the release roller 31, and a detachable pawl that cooperates with the ratchet is set on the inner wall of the through groove 2. When the paper tape 33 is wound up, the ratchet and the pawl cooperate with each other to drive the release roller 31 to release the paper tape 33 in an orderly manner, avoiding the possibility that the paper tape 33 is completely pulled out at one time and scattered inside the through groove 2, thereby improving the release and winding effect of the paper tape 33; when it is necessary to observe and inspect the paper tape 33, the pawl is removed and the release roller 31 can rotate freely, which is convenient for the staff to pull out the paper tape 33.

[0056] Reference Figure 6 A fixing plate 421 is provided 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 .

[0057] When the preparation work of the paper tape 33 is completed, the electric push rod 422 is started. During the movement of the telescopic end of the electric push rod 422, the telescopic end of the telescopic tube 42 is driven to move through the linkage cross plate 423. At this time, the telescopic tube 42 is pulled open, and the telescopic tube 42 is pulled to a certain length according to the required height. At this time, gas is pumped into the air intake pipe 34 through the existing air pump (not shown in the figure). A pressure difference occurs inside the telescopic tube 42 and the rubber hose 43, and the external gas can be pressed into the existing air pump. The telescopic end of the telescopic tube 42 can collect and process the gas at different heights in the environment. The collected gas passes through the telescopic tube 42, the rubber hose 43 and the air intake pipe 34 and diffuses on the paper tape 33.

[0058] Furthermore, the height of the telescopic end of the telescopic tube 42 can be changed through the above steps, and the telescopic end of the telescopic tube 42 can sample and collect gases at different heights, thereby ensuring that the experimental data is more representative.

[0059] Reference Figure 5 and Figure 6 In order to increase the sampling range of the telescopic tube 42, the swing block 41 provided in the present invention can drive the telescopic tube 42 to swing around the swing shaft 12. Specifically, a vertical frame 11 is provided on the top of the detection box 1, and a swing shaft 12 is rotatably installed on the vertical frame 11 through a bearing, and the 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. An arc-shaped rack plate 14 is installed on the end of the linkage rod 13 away from the swing shaft 12. 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.

[0060] During specific operation, the spur rack plate 15 is pushed and pulled back and forth, and during the reciprocating movement, the spur rack plate 15 cooperates with the arc-shaped rack plate 14 to drive the linkage rod 13 to swing around the swing shaft 12, and during the swinging of the swing shaft 12, the swing block 41 is driven to swing, and during the swinging of the swing block 41, the telescopic tube 42 is driven to swing around the swing shaft 12, so that the swinging path of the telescopic tube 42 is an arc structure, thereby increasing the sampling range of the telescopic end of the telescopic tube 42, so as to increase the sample amount of the sampled air, and make the detection result more representative.

[0061] Reference Figure 5 In order to reduce the use of existing drives, 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 spur rack plate 15 to move back and forth. A linkage block 16 that moves along the width direction of the through-groove 2 is provided through the limiter at the top of the detection box 1, and the spur rack plate 15 is installed on the linkage block 16. A bidirectional screw 17 is installed inside the through-groove 2 through a bearing, and the bidirectional screw 17 passes through the linkage block 16. The linkage block 16 and the bidirectional screw 17 are connected by a threaded transmission method, and the winding roller 32 and the bidirectional screw 17 are connected to each other by a belt transmission method.

[0062] During specific operation, the winding roller 32 drives the bidirectional screw 17 through a belt transmission during rotation, and the bidirectional screw 17 drives the linkage block 16 to reciprocate on the top of the detection box 1 during rotation, and then the reciprocating movement of the linkage block 16 drives the spur rack plate 15 to reciprocate, so that the reciprocating movement of the spur rack plate 15 can be achieved by sharing the drive with the winding roller 32.

[0063] Reference Figure 5 Since the linkage block 16 moves back and forth, a through groove needs to be opened on the detection box 1 to make way for it. In order to prevent external air from entering the through groove 2 from the through groove, the sealing strip 161 provided by the present invention can isolate the external air 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.

[0064] 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 moves synchronously due to the counterweight block 162. Therefore, during the movement of the linkage block 16, the counterweight block 162 and the sealing strip 161 cooperate with each other to ensure 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, thereby reducing the possibility of external air entering the through groove 2.

[0065] Reference Figure 7 and Figure 8 One end of the rubber hose 43 is provided with a connecting block 431 threadedly connected to the telescopic tube 42 , and one end of the rubber hose 43 away from the connecting block 431 is connected to the intake pipe 34 .

[0066] An automatically reset moving block 432 is slidably disposed on the top of the detection box 1 , a fixed pulley 433 is rotatably disposed on the moving block 432 via a supporting protrusion, and the rubber hose 43 is disposed on the fixed pulley 433 .

[0067] A fixed protrusion is provided on the detection box 1, and a telescopic spring rod 52 is installed between the fixed protrusion and the moving block 432 for resetting the moving block 432. During specific operation, at the starting position, the air inlet pipe 34 is connected 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 connecting block 431, and the telescopic spring rod 52 is stretched. At this time, the rubber hose 43 cooperates with the supporting protrusion through the fixed pulley 433 to drive the moving block 432 to move to the side away from the fixed protrusion. When the swing block 41 swings to the side close to the fixed, the telescopic tube 42 pulls the rubber hose 43 to reset through the connecting block 431, and the telescopic spring rod 52 is reset and synchronously drives the moving block 432 to reset.

[0068] Furthermore, through the above steps, the rubber hose 43 can be adaptively changed according to the change of the distance between the telescopic tube 42 and the air intake pipe 34 to ensure that the telescopic tube 42 and the air intake pipe 34 are always connected. 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 to prevent the rubber hose 43 from scattering on the detection box 1. At the same time, the rubber hose 43 can overcome the pressure between the fixed pulley 433, that is, the part of the rubber hose 43 that contacts the fixed pulley 433 will not be deformed (the tube diameter is reduced) due to the pressure given by the fixed pulley 433.

[0069] Replay Figure 2 A horizontal shaft 26 is symmetrically arranged along the length direction of the through-groove 2 on the inner wall of the through-groove 2 and between the release roller 31 and the winding roller 32, and the horizontal shaft 26 is installed on the inner wall of the through-groove 2 through a bearing.

[0070] The paper tape 33 is located above the two horizontal axes 26, and the two horizontal axes 26 cooperate with each other to ensure that the paper tape 33 is always in a straight state during the movement, thereby avoiding the possibility that the thickness of the paper tape 33 between the winding roller 32 and the release roller 31 changes, causing the part of the paper tape 33 between the winding roller 32 and the release roller 31 to tilt, resulting in the air intake pipe 34 and the paper tape 33 not being in close contact, thereby improving the effect of the gas inside the air intake pipe 34 diffusing on the paper tape 33.

[0071] When all the tests are completed, the test box 1 is moved out of the area to be tested, the sealing cover is opened, and the paper tape 33 is taken out.

[0072] Whether there is harmful gas in the detection area is determined based on whether there is color change of the reagent on the paper tape 33.

[0073] According to the size of the color change range on the paper tape 33, if the color change range of the reagent on the paper tape 33 is large, it means that the concentration of the toxic gas sampled at the telescopic end of the telescopic tube 42 is large; otherwise, the concentration is small.

[0074] Then, by comparing the moving track of the detection box 1 with the length of the paper tape 33 and the color change range on the paper tape 33, the specific location of the harmful gas can be determined, and the application range is wider.

[0075] Reference Figure 8 and Fig. 9Since the environment does not necessarily contain toxic gases or the content of toxic gases does not exceed the value that is harmful to the human body, if the air does not contain toxic gases, there is no need 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 the air contains toxic gases. Specifically, the portion of the air inlet pipe 34 located at the top of the detection box 1 is equipped with a concentration sensor 341, and the detection box 1 is also equipped with a buzzer alarm and a central control component electrically connected to the concentration sensor 341 and the buzzer alarm.

[0076] The central control assembly includes 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 includes a central control module, a concentration sensor module electrically connected to the central control module, and a buzzer alarm module electrically connected to the central control module.

[0077] The concentration sensing module is electrically connected to the concentration sensor 341 , and the buzzer alarm module is electrically connected to the buzzer alarm.

[0078] During specific operation, the gas passing through the telescopic tube 42 enters the interior of the intake pipe 34 via the rubber hose 43. At this time, the concentration sensor 341 detects and processes the gas entering the intake pipe 34. If the gas contains toxic gas, the concentration sensor 341 will transmit the toxic gas concentration information to the concentration sensing module. The concentration sensing module will process the above information and then transmit it to the central control module. The central control module will process the obtained information and then transmit 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. The buzzer alarm sounds an alarm. At this time, the staff can determine whether the environment to be detected contains toxic gas.

[0079] Furthermore, through the above steps, it can be determined whether the environment contains toxic gases. If the environment contains toxic gases, the above detection mechanism 3 and the air suction mechanism 4 cooperate with each other to determine the concentration and position of the toxic gases.

[0080] The vertical frame 11 is detachably mounted on the detection box 1. When 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, which is convenient for transportation and handling for subsequent detection. When it needs to be used 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. Example 2

[0081] Reference Fig.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.

[0082] 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.

[0083] 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.

[0084] The implementation principle of the present invention is: (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.

[0085] (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 tube 42 is driven to move through the linkage cross plate 423. At this time, the telescopic tube 42 is pulled open and the telescopic tube 42 is pulled to a certain length according to the required height. At this time, gas is pumped into the air inlet pipe 34 through the existing air pump. A pressure difference occurs inside the telescopic tube 42 and the rubber hose 43, and the external gas can be pressed into the existing air pump. The telescopic end of the telescopic tube 42 can collect and process the gas at different heights in the environment. The collected gas passes through the telescopic tube 42, the rubber hose 43 and the air inlet pipe 34 and diffuses on the paper tape 33.

[0086] (3): After all the tests are completed, the test box 1 is moved out of the area to be tested, the sealing cover is opened, and the paper tape 33 is taken out to observe the color change on the paper tape 33.

[0087] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

[0088] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes 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) is mounted on one side of the inner wall of the through-groove (2) via a bearing, and a winding roller (32) corresponding to the release roller (31) is mounted on the other side of the inner wall of the through-groove (2) via a bearing; A paper tape (33) is wound around a release roller (31), one end of the paper tape (33) away from the release roller (31) is adhered to a winding roller (32), and a reagent that reacts with the 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 matches 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); The air suction mechanism (4) comprises: A swing block (41) is arranged on the top of the detection box (1); A telescopic tube (42) penetrates and is clamped on the swing block (41); The rubber hose (43) is arranged between the telescopic tube (42) and the air intake pipe (34) and is used to connect the telescopic tube (42) and the air intake pipe (34).

2. A portable poison alarm detector according to claim 1, characterized in that: 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).

3. A portable poison alarm detector according to claim 2, 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.

4. A portable poison alarm detector according to claim 3, 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).

5. A portable poison alarm detector according to claim 1, characterized in that: 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).

6. 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).

7. 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).

8. 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.

9. 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.

10. A portable poison alarm detector according to claim 9, characterized in that: The central control assembly 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 sensor 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.

Images