Sampling equipment for waste gas detection

Abstract

The invention relates to the technical field of waste gas detection, and particularly discloses a sampling device for waste gas detection, which comprises a sampling pipeline, butterfly valves are movably mounted at two ends of the sampling pipeline, a mounting pipeline is fixedly mounted above the outer wall of the sampling pipeline, and a piston assembly is movably connected to the tail end of the mounting pipeline. A butt joint assembly is fixedly mounted below the outer wall of the sampling pipeline and comprises a butt joint pipeline fixedly connected with the sampling pipeline. By arranging the first gas inlet assembly and the second gas inlet assembly, waste gas dispersed in a sampling pipeline or an environment shaft rod can be sampled according to the actual situation, the position of a sealing plug used in cooperation with a rubber pad can be changed by extruding an electromagnet through a butt joint pipeline, and therefore the sampling efficiency is improved. Furthermore, the equipment can be used for sampling waste gas in a pipeline or waste gas in the environment through a single sampling port, so that the equipment is wider in application range and higher in applicability during use.

Description

Technical Field

[0001] The present invention relates to the technical field of exhaust gas detection, and in particular to a sampling device for exhaust gas detection. Background Art

[0002] A large amount of waste gas is generated in industrial production, including carbon dioxide, carbon disulfide, hydrogen sulfide, fluoride, nitrogen oxides, chlorine, hydrogen chloride, carbon monoxide, lead and mercury sulfate, beryllium, smoke and production dust, etc. The state has formulated strict emission standards for waste gas generated in industrial production, requiring enterprises to treat and filter toxic and harmful gases mixed in the waste gas before discharging it. Therefore, it is necessary to sample and test the waste gas at any time to check whether the waste gas meets the emission standards.

[0003] Existing exhaust gas sampling devices have great limitations when used. Some exhaust gas sampling devices can only cooperate with the sampling pipe connected to the pipeline to extract and sample the exhaust gas inside the pipeline, while some other exhaust gas sampling devices can only collect gas samples in the environment. In actual industrial production applications, it is usually necessary to collect exhaust gas samples in the pipeline to detect whether they meet the exhaust gas emission standards, and to collect gas samples in the environment to detect whether there is any leakage of exhaust gas in the pipeline. Therefore, a sampling device for exhaust gas detection is proposed. Summary of the invention

[0004] The purpose of the present invention is to solve the shortcomings in the prior art and to propose a sampling device for exhaust gas detection.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] A sampling device for exhaust gas detection comprises a sampling pipeline, butterfly valves are movably installed at both ends of the sampling pipeline, a mounting pipeline is fixedly installed on the upper part of the outer wall of the sampling pipeline, a piston assembly is movably connected to the end of the mounting pipeline, a docking assembly is fixedly installed below the outer wall of the sampling pipeline, the docking assembly comprises a docking pipeline fixedly connected to the sampling pipeline, a blocking block is movably installed at the lower end of the docking pipeline, and a mobile box is arranged at the end of the docking assembly outside the sampling pipeline, an air pump is fixedly installed inside the mobile box, and a second air intake assembly is also arranged on the upper surface of the mobile box, the air pump specifically comprises an air pump body, a first air intake assembly is fixedly installed on the air pump body, a first connecting column is rotatably installed at the center of the bottom surface of the air pump body, and a gas collecting assembly is arranged below the first connecting column;

[0007] The first air intake assembly specifically includes a first air intake pipe fixedly connected to the air pump body, a rubber pad fixedly installed on the upper end of the first air intake pipe, a permanent magnet slidably installed inside the first air intake pipe, and a sealing plug used in conjunction with the rubber pad fixedly installed on the upper end surface of the permanent magnet, an electromagnet slidably installed on the outer wall of the first air intake pipe, a support platform fixedly installed on the air pump body below the electromagnet, a second return spring is arranged between the support platform and the electromagnet, and two ends of the second return spring are respectively fixedly connected to corresponding positions on the electromagnet and the support platform;

[0008] The second air intake assembly includes a winding column fixedly mounted on the upper surface of the mobile box, an air delivery hose is wound around the outer wall of the winding column, one end of the air delivery hose passes through the interior of the electromagnet and is fixedly connected to the first air intake pipe;

[0009] The mobile box is provided with a lifting assembly, which includes two groups of scissor-type lifting frames, which are respectively arranged on both sides of the mobile box. The upper end surface of the mounting plate is provided with a first adjusting assembly, which includes a gear ring rotatably connected to the upper end surface of the mounting plate, a second limiting ring is fixedly installed on the inner wall of the gear ring, a second air inlet pipe is fixedly installed on the second limiting ring, and the lower end of the second air inlet pipe is fixedly connected to the other end of the air delivery hose.

[0010] Preferably, the piston assembly specifically includes a piston cylinder movably connected to the installation pipe, a piston plate movably installed inside the piston cylinder, a piston rod fixedly installed on the upper surface of the piston plate, and one end of the piston rod passes through a corresponding position on the piston cylinder and extends to the outside of the piston cylinder, a plurality of gas injection holes are penetrated through the outer wall of the upper end of the docking pipe arranged opposite to the piston cylinder, and a first fixed block is fixedly installed on the upper end of the docking pipe, a first return spring is fixedly connected to the bottom surface of the first fixed block, the other end of the first return spring is fixedly connected to a sealing block arranged to match the inner diameter of the docking pipe, and a clearance groove is opened at the lower end of the docking pipe.

[0011] Preferably, the upper surface of the mounting plate is located on one side of the gear ring and is rotatably mounted with a gear meshing with the gear ring, the upper end surface of the mounting plate is located on one side of the gear and is movably mounted with a movable block, the movable block is rotatably connected to the first rotating shaft at one end close to the gear, a pawl is fixedly connected to the first rotating shaft, the end of the pawl is engaged with the corresponding position on the gear, the second rotating shaft and the protrusion are respectively fixedly connected on both sides of the end of the movable block away from the gear, wherein the ends of the second rotating shaft and the first rotating shaft are both provided with torsion springs, and a cam is rotatably mounted on the upper surface of the mounting plate at a position corresponding to the protrusion, and a groove is provided on one side of the cam.

[0012] Preferably, a rotating block is rotatably installed at the center position of the upper surface of the winding column, a connecting rod is fixedly connected to the outer wall of the rotating block, a first limiting ring is fixedly installed at the end of the connecting rod, and the end of the air supply hose passes through the interior of the first limiting ring and is connected to the end of the second air inlet pipe.

[0013] Preferably, a rectangular groove is formed on the outer wall of the vacuum pump body, a moving block is slidably mounted inside the rectangular groove, an air outlet pipe is fixedly mounted on the moving block, and an extrusion sensor is fixedly mounted at the inner lower end of the rectangular groove.

[0014] Preferably, the gas collecting assembly includes a second connecting column fixedly connected to the bottom surface of the first connecting column, the outer wall of the second connecting column is provided with a sliding groove, the outer wall of the second connecting column is slidably installed with a supporting tray through the sliding groove, the outer wall of the supporting tray is provided with a plurality of placement grooves at equal intervals, and the air collecting bag is clamped and installed inside the placement groove.

[0015] Preferably, a third fixed block is fixedly installed on the upper surface of the supporting tray at a position corresponding to the placement groove, and limiting sliders are slidably installed at both ends of the third fixed block. The upper end of the air collecting bag is fixedly connected with a clamping block used in conjunction with the third fixed block, and a plug-in tube is fixedly installed on the upper end surface of the clamping block, and the plug-in tube is connected to the interior of the air collecting bag.

[0016] Preferably, a rotating disk is fixedly installed at the lower end of the second connecting column, and second fixing blocks are fixedly installed on both sides of the rotating disk on the inner wall of the movable box, and one end of the second fixing block is slidably connected to the outer wall of the rotating disk.

[0017] Preferably, a second adjustment component is provided on the bottom surface of the rotating disk, and the second adjustment component includes an active rotating disk rotatably connected to the inner wall of the bottom surface of the moving box, and a sliding column is fixedly installed at the edge position of the upper end surface of the active rotating disk. The second adjustment component also includes a connecting frame fixedly connected to the bottom surface of the rotating disk, and the end of the connecting frame is commonly fixedly connected to a guide disk, and a plurality of guide grooves for use with the sliding column are formed through the guide disk, and the end of the sliding column is slidably installed in the guide groove.

[0018] Preferably, two groups of rollers are movably mounted on the bottom of the movable box, and electric telescopic rods are arranged between the two groups of rollers and the movable box.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] The present invention arranges a first air intake assembly and a second air intake assembly, and can sample the exhaust gas inside the sampling pipe or the exhaust gas discretely disposed on the environmental shaft rod according to actual conditions, wherein the squeezing of the electromagnet by the docking pipe can be used to change the position of the sealing plug used in conjunction with the rubber pad, thereby enabling the device to sample the exhaust gas inside the pipe or the exhaust gas in the environment through a single sampling port, thereby making the device more applicable and more practical when used.

[0021] The present invention provides a gas collecting component and a second adjusting component, and transmits a signal to a controller under the cooperation of a moving block and an extrusion sensor. The device can be used to fully automatically collect multiple exhaust gas samples, wherein the user can collect exhaust gas samples inside the sampling pipe at different time points according to actual conditions, and can also collect environmental exhaust gas samples at different heights and locations according to actual conditions. By fully automatically collecting multiple samples through the device, labor costs can be saved on the one hand, and the harm to the body of the sampling personnel caused by harmful exhaust gases can be reduced on the other hand. In addition, by collecting multiple parallel samples through the device, different detection requirements of the staff for exhaust gas samples can be met, and the accuracy of the detection results of the exhaust gas samples inside the pipeline can be improved.

[0022] The present invention controls the rotation angle of the gear ring by controlling the number of revolutions of the driving cam by setting a first adjustment component. When the gear ring drives the second intake pipe to rotate, it can accurately sample environmental samples at different positions on the same horizontal line, thereby making the device have a wider sample collection range, thereby facilitating subsequent researchers to analyze environmental exhaust gas samples at different heights and different directions. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0024] Figure 1 It is a schematic diagram of the overall structure in an embodiment of the present invention;

[0025] Figure 2 It is a side schematic diagram of the overall structure in an embodiment of the present invention;

[0026] Figure 3 It is a schematic cross-sectional view of the overall structure in an embodiment of the present invention;

[0027] Figure 4 Schematic diagram of the cross-sectional structure of the first air intake pipe in an embodiment of the present invention;

[0028] Figure 5This is a schematic diagram of the structure of the first adjustment component in an embodiment of the present invention;

[0029] Figure 6 This is a schematic diagram of the structure of another state of the first adjustment component in an embodiment of the present invention;

[0030] Figure 7 This is a schematic diagram of the structure of an air extraction pump in an embodiment of the present invention;

[0031] Figure 8 This is a schematic diagram of the structure of a gas collecting assembly in an embodiment of the present invention;

[0032] Fig. 9 It is a schematic diagram of the structure separation of the air collecting bag and the placement tank in an embodiment of the present invention;

[0033] Fig.10 This is a schematic diagram of the structure of the second adjustment component in an embodiment of the present invention;

[0034] Fig.11 For the embodiment of the present invention Figure 3 Schematic diagram of the partially enlarged structure.

[0035] In the figure: 1, sampling pipeline; 2, butterfly valve; 3, installation pipeline; 4, mobile box; 5, roller; 6, lifting assembly; 601, scissor lift; 602, installation plate; 7, docking assembly; 701, docking pipeline; 702, clearance groove; 703, air injection hole; 704, first fixing block; 705, first return spring; 706, blocking block; 8, piston assembly; 801, piston cylinder; 802, piston rod; 803, piston plate; 9, pumping Air pump; 901, air pump body; 902, moving block; 903, air outlet pipe; 904, extrusion sensor; 10, first connecting column; 11, air collecting assembly; 1101, rotating disk; 1102, plug-in tube; 1103, second connecting column; 1104, slide; 1105, tray; 1106, air collecting bag; 1107, placement slot; 1108, third fixing block; 1109, limit slider; 1110, clamping block; 12, the first An air intake assembly; 1201, a first air intake pipe; 1202, a rubber pad; 1203, a sealing plug; 1204, a permanent magnet; 1205, an electromagnet; 1206, a support platform; 1207, a second return spring; 13, a second air intake assembly; 1301, a winding column; 1302, an air delivery hose; 1303, a rotating block; 1304, a connecting rod; 1305, a first limiting ring; 1306, a second air intake pipe; 1307, a second limiting ring; 14. First adjusting assembly; 1401. Gear ring; 1402. Gear; 1403. Movable block; 1404. Ratchet; 1405. First rotating shaft; 1406. Second rotating shaft; 1407. Bump; 1408. Cam; 1409. Groove; 15. Second adjusting assembly; 1501. Active turntable; 1502. Sliding column; 1503. Guide plate; 1504. Connecting frame; 1505. Guide groove; 16. Second fixed block. DETAILED DESCRIPTION

[0036] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0037] Reference Figure 1-11, a sampling device for exhaust gas detection, comprising a sampling pipeline 1, butterfly valves 2 are movably installed at both ends of the sampling pipeline 1, a mounting pipeline 3 is fixedly installed on the upper side of the outer wall of the sampling pipeline 1, a piston assembly 8 is movably connected to the end of the mounting pipeline 3, a docking assembly 7 is fixedly installed below the outer wall of the sampling pipeline 1, the docking assembly 7 comprises a docking pipeline 701 fixedly connected to the sampling pipeline 1, a blocking block 706 is movably installed at the lower end of the docking pipeline 701, and a mobile box 4 is arranged at the end of the docking assembly 7 outside the sampling pipeline 1, an air pump 9 is fixedly installed inside the mobile box 4, and a second air intake assembly 13 is also arranged on the upper surface of the mobile box 4, the air pump 9 specifically comprises an air pump body 901, a first air intake assembly 12 is fixedly installed on the air pump body 901, a first connecting column 10 is rotatably installed at the center of the bottom surface of the air pump body 901, and a gas collecting assembly 11 is arranged below the first connecting column 10;

[0038] The first air intake assembly 12 specifically includes a first air intake pipe 1201 fixedly connected to the air pump body 901, a rubber pad 1202 is fixedly installed on the upper end of the first air intake pipe 1201, a permanent magnet 1204 is slidably installed inside the first air intake pipe 1201, the permanent magnet 1204 is a hollow structure, and a sealing plug 1203 used in conjunction with the rubber pad 1202 is fixedly installed on the upper end surface of the permanent magnet 1204, an electromagnet 1205 is slidably installed on the outer wall of the first air intake pipe 1201, and the electromagnet 1205 and the permanent magnet 1204 attract each other, a support platform 1206 is fixedly installed on the air pump body 901 below the electromagnet 1205, a second return spring 1207 is arranged between the support platform 1206 and the electromagnet 1205, and two ends of the second return spring 1207 are respectively fixedly connected to corresponding positions on the electromagnet 1205 and the support platform 1206;

[0039] The second air inlet assembly 13 includes a winding column 1301 fixedly mounted on the upper surface of the mobile box 4, a gas hose 1302 is wound around the outer wall of the winding column 1301, one end of the gas hose 1302 passes through the inside of the electromagnet 1205 and is fixedly connected to the first air inlet pipe 1201, and the gas hose 1302 is connected to the inside of the first air inlet pipe 1201, and a first gas one-way valve is movably installed inside a section of the gas hose 1302 arranged inside the electromagnet 1205;

[0040] The mobile box 4 is provided with a lifting assembly 6, which includes two sets of scissor-type lifting frames 601, which are respectively arranged on both sides of the mobile box 4, one side of the lower end of the scissor-type lifting frame 601 is fixedly connected to the corresponding position on the mobile box 4, and the other side is slidably connected to the mobile box 4, and the upper ends of the two sets of scissor-type lifting frames 601 are commonly connected with a mounting plate 602, and the connection method between the scissor-type lifting frame 601 and the mounting plate 602 is the same as that between the scissor-type lifting frame 601 and the mobile box The connection mode between the two bodies 4 is the same. The upper end surface of the mounting plate 602 is provided with a first adjustment component 14, and the first adjustment component 14 includes a gear ring 1401 rotatably connected to the upper end surface of the mounting plate 602. The inner wall of the gear ring 1401 is fixedly installed with a second limiting ring 1307, and the second limiting ring 1307 is fixedly installed with a second air inlet pipe 1306. The second air inlet pipe 1306 is L-shaped, and the lower end of the second air inlet pipe 1306 is fixedly connected to the other end of the air delivery hose 1302;

[0041] In actual use, through the cooperation of the first air intake component 12 and the docking component 7, the exhaust gas sample flowing inside the sampling pipe 1 can be sampled into the gas collection component 11 for collection through the air pump 9, wherein the butterfly valves 2 located at both ends of the sampling pipe 1 are rotated through external control to seal both ends of the sampling pipe 1, and then the user can push the movable box 4 to move it to the bottom of the docking component 7, and then control the movable box 4 to lift up as a whole so that the lower end of the docking pipe 701 squeezes the electromagnet 1205, and at this time the upper end of the first air intake pipe 1201 extends into the clearance groove 7 02 is docked with the docking pipe 701. When the electromagnet 1205 is squeezed downward by the end of the docking pipe 701, the permanent magnet 1204 connected to the electromagnet 1205 by magnetic attraction simultaneously drives the sealing plug 1203 to move downward. After the sealing plug 1203 is separated from the rubber pad 1202, the gap between the two can be used for airflow to pass. Then, by opening the vacuum pump body 901, the inside of the first air inlet pipe 1201 is sucked. With the assistance of the piston assembly 8, when the blocking block 706 is squeezed into the inside of the first air inlet pipe 1201, the gas inside the sampling pipe 1 Under the synchronous action of the piston assembly 8 and the air pump 9, the exhaust gas can enter the interior of the air pump 9 and then be collected through the air collection assembly 11. When the user needs to sample the exhaust gas in the environment, the user can also move the mobile box 4 to the environment to be sampled. At this time, the first air inlet pipe 1201 is separated from the docking pipe 701 on the sampling pipe 1 and used separately. When the electromagnet 1205 slidably installed on the outer wall of the first air inlet pipe 1201 loses the squeeze of the end of the docking pipe 701, under the action of the second return spring 1207, the electromagnet 1205 slides upward and drives the permanent magnet 1 204 is pointing upward. At this time, the sealing plug 1203 fixedly installed on the upper surface of the permanent magnet 1204 cooperates with the rubber pad 1202 to seal the upper end of the first air inlet pipe 1201. Then the user can adjust the sampling height of the device through the lifting component 6 according to the actual situation. At the same time, the device can be adjusted to take samples at different positions at different heights through the first adjustment component 14. When sampling in the environment, the upper end of the first air inlet pipe 1201 is closed, and the gas sample in the environment is sucked at the end of the second air inlet pipe 1306 and transported by the gas hose 1302 and then collected inside the gas collecting component 11.

[0042] As a technical optimization solution of the present invention, the piston assembly 8 specifically includes a piston cylinder 801 movably connected to the installation pipe 3, a piston plate 803 is movably installed inside the piston cylinder 801, a piston rod 802 is fixedly installed on the upper surface of the piston plate 803, and one end of the piston rod 802 passes through the corresponding position on the piston cylinder 801 and extends to the outside of the piston cylinder 801, a plurality of gas injection holes 703 are penetrated through the outer wall of the upper end of the docking pipe 701 arranged opposite to the piston cylinder 801, and a first fixed block 704 is fixedly installed on the upper end of the docking pipe 701, a first return spring 705 is fixedly connected to the bottom surface of the first fixed block 704, the other end of the first return spring 705 is fixedly connected to a blocking block 706 arranged to match the inner diameter of the docking pipe 701, and a clearance groove 702 is opened at the lower end of the docking pipe 701;

[0043] When sampling the exhaust gas inside the sampling pipe 1, when the butterfly valves 2 set at both ends of the sampling pipe 1 are in an open state, the piston plate 803 in the piston cylinder 801 is set at the upper end of the piston cylinder 801, and the user can press the end of the piston rod 802 downward so that the piston rod 802 pushes the piston plate 803 to move inside the piston cylinder 801. The piston plate 803 can compress the internal space of the piston cylinder 801 connected to the inside of the sampling pipe 1 during the downward movement, thereby compressing the gas inside the closed space of the sampling pipe 1. At this time, the pressure inside the sampling pipe 1 increases, and the blocking block 706 can be squeezed downward. The inner diameter of the upper end of the first air inlet pipe 1201 is larger than the inner diameter of the docking pipe 701. When the blocking block 706 is squeezed into the first air inlet pipe 1201, the gas inside the sampling pipe 1 can enter the interior of the air pump 9 under the synchronous action of the piston assembly 8 and the air pump 9, and then be collected by the gas collecting assembly 11.

[0044] As a technical optimization solution of the present invention, the upper surface of the mounting plate 602 is located on one side of the gear ring 1401 and is rotatably mounted with a gear 1402 meshing with the gear ring 1401, the upper end surface of the mounting plate 602 is located on one side of the gear 1402 and is movably mounted with a movable block 1403, one end of the movable block 1403 close to the gear 1402 is rotatably connected with a first rotating shaft 1405, a pawl 1404 is fixedly connected to the first rotating shaft 1405, the end of the pawl 1404 is engaged with a corresponding position on the gear 1402, and the two sides of the end of the movable block 1403 away from the gear 1402 are respectively fixedly connected with a second rotating shaft 1406 and a protrusion 1407, wherein the ends of the second rotating shaft 1406 and the first rotating shaft 1405 are both provided with torsion springs, and a cam 1408 is rotatably mounted on the upper surface of the mounting plate 602 at a position corresponding to the protrusion 1407, and a groove 1409 is provided on one side of the cam 1408;

[0045] When the scissor lift 601 lifts the mounting plate 602 to a specified height, the cam 1408 is driven to rotate. When the convex surface of the cam 1408 rotates to contact the protrusion 1407, the movable block 1403 rotates clockwise with the second rotating shaft 1406 as the axis, and the pawl 1404 rotates counterclockwise with the first rotating shaft 1405 as the axis. When the concave surface of the groove 1409 rotates to contact the outer wall of the protrusion 1407, the movable block 1403 and the pawl 1404 are reset under the action of the torsion springs provided at the ends of the first rotating shaft 1405 and the second rotating shaft 1406. In the process of alternating contact with the protrusion 1407, the pawl 1404 can be alternately engaged with the tooth groove opened on the outer wall of the gear 1402, thereby pushing the gear 1402 to rotate. In this process, assuming that the number of tooth grooves opened on the gear 1402 is m, the cam 1408 rotates one circle to push the gear 1402 to rotate 360 / m degrees. The user can adjust the lifting component 6 and the first adjustment component 14 according to the actual situation to sample the gas at different heights and different directions in the environment and store them in multiple gas collection bags 1106 respectively, which is convenient for subsequent researchers to analyze the environmental exhaust gas samples at different heights and different directions.

[0046] As a technical optimization solution of the present invention, a rotating block 1303 is rotatably installed at the center of the upper surface of the winding column 1301, a connecting rod 1304 is fixedly connected to the outer wall of the rotating block 1303, a first limiting ring 1305 is fixedly installed at the end of the connecting rod 1304, and the end of the gas delivery hose 1302 passes through the interior of the first limiting ring 1305 and is connected to the end of the second air inlet pipe 1306;

[0047] After sampling is completed, the mounting plate 602 moves downward and is stored above the movable box 4. During this process, the rotating block 1303 rotates to cause the first limiting ring 1305 to rotate synchronously, and then the released gas hose 1302 is rewound to the outside of the winding column 1301 through the first limiting ring 1305 for storage.

[0048] As a technical optimization solution of the present invention, a rectangular groove is provided on the outer wall of the air pump body 901, a moving block 902 is slidably installed inside the rectangular groove, an air outlet pipe 903 is fixedly installed on the moving block 902, and an extrusion sensor 904 is fixedly installed at the lower end of the inner part of the rectangular groove;

[0049] When the moving block 902 moves to the lower end of the rectangular groove, the squeezing sensor 904 will be squeezed. After the squeezing sensor 904 is squeezed, the signal can be transmitted to the controller. Under the action of the controller, it cooperates with the second adjustment component 15 to make the multiple gas collecting bags 1106 in the gas collecting component 11 move to the end of the outlet pipe 903 in turn to inject and collect the exhaust gas.

[0050] As a technical optimization solution of the present invention, the gas collecting assembly 11 includes a second connecting column 1103 fixedly connected to the bottom surface of the first connecting column 10, the outer wall of the second connecting column 1103 is provided with a slide groove 1104, the outer wall of the second connecting column 1103 is slidably mounted with a tray 1105 through the slide groove 1104, the outer wall of the tray 1105 is equidistantly provided with a plurality of placement grooves 1107, and the inner part of the placement groove 1107 is clamped and mounted with a gas collecting bag 1106;

[0051] The air outlet pipe 903 slides downward under the action of the controller, wherein the air outlet pipe 903 is connected to the internal power structure of the air pump body 901 through a hose. When the moving block 902 slides downward, on the one hand, the end of the air outlet pipe 903 can be docked with the upper end of the plug-in tube 1102, and on the other hand, the squeezing sensor 904 set at the lower end of the rectangular groove can be squeezed. A second gas one-way valve is set inside the plug-in tube 1102. When the air outlet pipe 903 stops injecting waste gas into the air collecting bag 1106, the second gas one-way valve can prevent the air collecting bag 1106 from leaking. If the stored exhaust gas leaks, after a certain air collecting bag 1106 is filled, the moving block 902 slides upward to the initial position. At this time, the extrusion sensor 904 is separated from the moving block 902. Then, the second adjustment component 15 arranged on the bottom surface of the rotating disk 1101 can drive the rotating disk 1101 to rotate, so that when the next air collecting bag 1106 rotates, the exhaust gas is collected under the outlet pipe 903, wherein the supporting tray 1105 is slidably connected to the second connecting column 1103, and the supporting tray 1105 can be used to control the height of the air collecting bag 1106 under the action of the controller.

[0052] As a technical optimization solution of the present invention, a third fixed block 1108 is fixedly installed on the upper surface of the tray 1105 at a position corresponding to the placement groove 1107, and limiting sliders 1109 are slidably installed at both ends of the third fixed block 1108. The upper end of the air collecting bag 1106 is fixedly connected with a clamping block 1110 used in conjunction with the third fixed block 1108, and the upper end surface of the clamping block 1110 is fixedly installed with a plug-in tube 1102, and the plug-in tube 1102 is connected to the inside of the air collecting bag 1106;

[0053] The clamping block 1110 fixedly installed on the upper end of the air collecting bag 1106 and the third fixing block 1108 set on the supporting tray 1105 are both magnetically set, so the air collecting bag 1106 can be stably clamped and installed inside the placement groove 1107. After the air collecting bag 1106 is installed inside the placement groove 1107, the air can be normally collected through the air outlet pipe 903. When all the air collection work is completed, the user can pinch the two ends of the clamping block 1110 and pull it outward, and the two ends of the third fixing block 1108 slide The connected limiting slider 1109 slides to both sides to make way, so that the clamping block 1110 fixed in the placement groove 1107 can be taken out, and a second gas one-way valve is arranged inside the plug-in tube 1102, and elastic rubber pads 1202 are arranged at the ends of the plug-in tube 1102 and the air outlet pipe 903. The setting of the elastic rubber pad 1202 can ensure the sealing of the connection between the end of the air outlet pipe 903 and the plug-in tube 1102 when the two are connected, thereby avoiding air leakage at the connection between the air outlet pipe 903 and the plug-in tube 1102.

[0054] As a technical optimization solution of the present invention, a rotating disk 1101 is fixedly installed at the lower end of the second connecting column 1103, and second fixing blocks 16 are fixedly installed on both sides of the inner wall of the moving box 4 located on the rotating disk 1101, and one end of the second fixing block 16 is slidably connected to the outer wall of the rotating disk 1101;

[0055] Two groups of second fixed blocks 16 are respectively arranged on both sides of the rotating disk 1101 to support the rotating disk 1101. Balls or the like can be set at the position where the end of the second fixed block 16 contacts the rotating disk 1101 for lubrication, thereby reducing the friction between the rotating disk 1101 and the end of the second fixed block 16, thereby ensuring that the rotating disk 1101 can rotate smoothly.

[0056] As a technical optimization solution of the present invention, a second adjustment component 15 is provided on the bottom surface of the rotating disk 1101, and the second adjustment component 15 includes an active rotating disk 1501 rotatably connected to the inner wall of the bottom surface of the moving box 4, and a sliding column 1502 is fixedly installed at the edge position of the upper end surface of the active rotating disk 1501. The second adjustment component 15 also includes a connecting frame 1504 fixedly connected to the bottom surface of the rotating disk 1101, and the end of the connecting frame 1504 is commonly fixedly connected to a guide disk 1503, and a plurality of guide grooves 1505 used in conjunction with the sliding column 1502 are provided on the guide disk 1503, and the end of the sliding column 1502 is slidably installed inside the guide groove 1505;

[0057] The number of guide grooves 1505 provided on the guide plate 1503 is the same as the number of placement grooves 1107 provided on the tray 1105. The active turntable 1501 provided on the bottom surface of the movable box body 4 is driven to rotate by an external motor. When the movable block 902 squeezes the squeeze sensor 904 once, the squeeze sensor 904 can transmit a signal to the controller. Under the control of the controller, the external motor drives the active turntable 1501 to rotate. When the active turntable 1501 rotates, the sliding column 1502 provided on the edge thereof slides inside the guide groove 1505. When the active turntable 1501 rotates one circle, the sliding column 1502 slides inside the guide groove 1505. The sliding column 1502 can drive the guide plate 1503 to rotate an angle, and the size of the angle depends on the number of guide grooves 1505. Multiple guide grooves 1505 are equidistantly distributed on the guide plate 1503. Assuming that the number of guide grooves 1505 is n, the active turntable 1501 rotates one circle to drive the guide plate 1503 to rotate 360 / n degrees. That is, after the active turntable 1501 rotates one circle, it can drive the next air collecting bag 1106 mounted on the support tray 1105 to move to the bottom of the air outlet pipe 903 to collect air. This process can realize automatic sampling of multiple samples through the coordination of the second adjustment component 15 and the upper and lower activities of the moving block 902.

[0058] As a technical optimization solution of the present invention, two groups of rollers 5 are movably installed at the bottom of the mobile box 4, and electric telescopic rods are arranged between the two groups of rollers 5 and the mobile box 4. The mobile box 4 can be conveniently moved by setting the rollers 5. The setting of the electric telescopic rods can adjust the height of the mobile box 4 within a certain range, so that the first air inlet pipe 1201 in the device can be used in conjunction with the docking pipe 701 after docking.

[0059] When the present invention is used, the waste gas inside the pipeline and the waste gas in the environment can be sampled and tested respectively according to the actual use situation;

[0060] When sampling the exhaust gas inside the pipeline, the sampling pipeline 1 can be connected to the middle section of the straight pipeline, wherein the sampling pipeline 1 can be used for the exhaust gas inside the normal conveying pipeline, and during normal use, the piston plate 803 is arranged at the upper end of the piston cylinder 801. When it is necessary to sample the exhaust gas inside the pipeline, the butterfly valves 2 located at both ends of the sampling pipeline 1 are rotated through external control to seal the two ends of the sampling pipeline 1, and then the user can push the movable box 4 to move it to the bottom of the docking assembly 7, and then control the movable box 4 to lift up as a whole so that the lower end of the docking pipeline 701 squeezes the electromagnet 1205. At this time, the upper end of the first air inlet pipe 1201 extends into the inside of the make way groove 702 and docks with the docking pipeline 701. When the electromagnet 1205 is squeezed downward by the end of the docking pipeline 701, the permanent magnet 1204 connected to the electromagnet 1205 by magnetic attraction simultaneously drives the sealing plug 1203 to move downward. When the sealing plug 1203 is separated from the rubber pad 1202, the gap between the two It can be used for air flow to pass through, and then, by opening the air pump body 901, the first air inlet pipe 1201 is sucked. At the same time, the user can press the end of the piston rod 802 downward so that the piston rod 802 pushes the piston plate 803 to move inside the piston cylinder 801. The piston plate 803 can compress the internal space of the piston cylinder 801 connected to the inside of the sampling pipeline 1 during the downward movement, thereby compressing the gas in the closed space of the sampling pipeline 1. At this time, the pressure inside the sampling pipeline 1 increases, and the sampling pipeline 1 is compressed. The airflow inside the pipeline 1 can enter the interior of the docking pipeline 701 through the multiple air injection holes 703 opened at the upper end of the docking pipeline 701. Then, the blocking block 706 can be squeezed downward under the action of the airflow. The inner diameter of the upper end of the first air inlet pipe 1201 is larger than the inner diameter of the docking pipeline 701. Then, when the blocking block 706 is squeezed into the interior of the first air inlet pipe 1201, the gas inside the sampling pipeline 1 can enter the interior of the air pump 9 under the synchronous action of the piston assembly 8 and the air pump 9 and then be collected by the gas collecting assembly 11.

[0061] After the exhaust gas in the sampling pipeline 1 is extracted by the air pump body 901, the gas can be discharged to the outside through the air outlet pipe 903 arranged on the air pump body 901, wherein the air collecting bag 1106 contained in the air collecting component 11 is arranged below the air outlet pipe 903, wherein the clamping block 1110 fixedly installed on the upper end of the air collecting bag 1106 and the third fixing block 1108 arranged on the supporting tray 1105 are both magnetically arranged on the side contacting each other, so that the air collecting bag 1106 can be stably clamped and installed in the placement groove 1107. After the air collecting bag 1106 is installed in the placement groove 1107, the air outlet pipe 903 is connected to the controller (CPM1A). The moving block 902 slides downward under the action of the PLC controller, wherein the air outlet pipe 903 is connected to the internal power structure of the air pump body 901 through a hose. When the moving block 902 slides downward, on the one hand, the end of the air outlet pipe 903 can be docked with the upper end of the plug-in tube 1102, and on the other hand, the squeezing sensor 904 set at the lower end of the rectangular groove can be squeezed. The plug-in tube 1102 is provided with a second gas one-way valve inside. When the air outlet pipe 903 stops injecting waste gas into the air collecting bag 1106, the second gas one-way valve can prevent the air collecting bag 1106 from storing waste gas inside. If the exhaust gas leaks out, when a certain air collecting bag 1106 is filled, the moving block 902 slides upward to the initial position, at which time the extrusion sensor 904 is separated from the moving block 902, and then the second adjustment component 15 arranged on the bottom surface of the rotating disk 1101 can drive the rotating disk 1101 to rotate, so that when the next air collecting bag 1106 rotates, the exhaust gas is collected under the air outlet pipe 903, wherein the supporting tray 1105 is slidably connected to the second connecting column 1103, and the supporting tray 1105 can be used to control the height of the air collecting bag 1106 under the action of the controller;

[0062] The active turntable 1501 arranged on the bottom surface of the moving box 4 is driven to rotate by an external motor. When the moving block 902 squeezes the squeezing sensor 904 once, the squeezing sensor 904 can transmit a signal to the controller. Under the control of the controller, the external motor drives the active turntable 1501 to rotate. When the active turntable 1501 rotates, the sliding column 1502 arranged on its edge slides inside the guide groove 1505. When the active turntable 1501 rotates one circle, the sliding column 1502 sliding inside the guide groove 1505 can drive the guide plate 1503 to rotate an angle. The size of the angle depends on the number of guide grooves 1505. Multiple guide grooves 1505 are equidistantly distributed on the guide plate 1503. Assuming that the number of guide grooves 1505 is n, the active turntable 150 One rotation of the active turntable 1501 can drive the guide plate 1503 to rotate 360 / n degrees, that is, after one rotation of the active turntable 1501, the next gas collecting bag 1106 mounted on the support tray 1105 can be driven to move to the bottom of the gas outlet pipe 903 to collect gas. This process can realize automatic sampling of multiple samples through the cooperation of the second adjustment component 15 and the up and down activities of the moving block 902. According to the actual situation, the user sets the sampling time of the air pump 9 through the controller to realize automatic sampling of the exhaust gas flowing inside the sampling pipeline 1 at multiple time nodes, which saves labor costs and avoids the safety hazards brought to the human body by harmful exhaust gases. Multiple groups of parallel exhaust gas samples can meet the different detection needs of the staff for the exhaust gas samples and improve the accuracy of the detection results of the exhaust gas samples inside the pipeline.

[0063] When sampling the exhaust gas in the environment, the user can also move the mobile box 4 to the environment to be sampled. At this time, the first air inlet pipe 1201 is separated from the docking pipe 701 on the sampling pipe 1 and used separately. When the electromagnet 1205 slidably installed on the outer wall of the first air inlet pipe 1201 loses the squeeze of the end of the docking pipe 701, then under the action of the second return spring 1207, the electromagnet 1205 slides upward and drives the permanent magnet 1204 upward. At this time, the sealing plug 1203 fixedly installed on the upper surface of the permanent magnet 1204 cooperates with the rubber pad 1202 to seal the upper end of the first air inlet pipe 1201. Then the user can adjust the sampling height of the device through the lifting component 6 according to the actual situation, and can also adjust the device to take samples at different positions at different heights through the first adjustment component 14;

[0064] When used in an environment, by adjusting the height of the scissor-type lifting frame 601, the scissor-type lifting frame 601 can drive the mounting plate 602 to lift upward, and a gear ring 1401 is movably installed at the center of the upper end surface of the mounting plate 602. The second air inlet pipe 1306 arranged on the inner wall of the gear ring 1401 can rotate synchronously with the gear ring 1401. After the scissor-type lifting frame 601 lifts the mounting plate 602 to a specified height, the cam 1408 is driven to rotate. When the convex surface of the cam 1408 rotates to contact with the protrusion 1407, the movable block 1403 rotates clockwise with the second rotating shaft 1406 as the axis, and the pawl 1404 rotates counterclockwise with the first rotating shaft 1405 as the axis. When the concave surface of the groove 1409 rotates to contact with the outer wall of the protrusion 1407, the first rotating shaft 1405 and the second rotating shaft Under the action of the torsion spring set at the end of 1406, the movable block 1403 and the pawl 1404 are reset. In the process that the convex surface of the cam 1408 and the inner wall of the groove 1409 alternately contact the convex block 1407, the pawl 1404 can be alternately engaged in the tooth groove opened on the outer wall of the gear 1402, thereby pushing the gear 1402 to rotate. In this process, assuming that the number of tooth grooves opened on the gear 1402 is m, the cam 1408 rotates one circle to push the gear 1402 to rotate 360 / m degrees. The user can adjust the lifting component 6 and the first adjustment component 14 according to the actual situation to sample the gas at different heights and different directions in the environment and store them in multiple gas collection bags 1106 respectively, so as to facilitate subsequent researchers to analyze environmental exhaust gas samples at different heights and different directions.

[0065] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.

[0066] What is described above is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A sampling device for exhaust gas detection, comprising a sampling pipeline (1), with butterfly valves (2) movably installed at both ends of the sampling pipeline (1), characterized in that: A mounting pipe (3) is fixedly mounted above the outer wall of the sampling pipe (1), a piston assembly (8) is movably connected to the end of the mounting pipe (3), a docking assembly (7) is fixedly mounted below the outer wall of the sampling pipe (1), the docking assembly (7) comprises a docking pipe (701) fixedly connected to the sampling pipe (1), a blocking block (706) is movably mounted at the lower end of the docking pipe (701), and a movable piston assembly (7) is arranged outside the sampling pipe (1) at the end of the docking assembly (7). A movable box (4), an air pump (9) is fixedly installed inside the movable box (4), a second air intake assembly (13) is also arranged on the upper surface of the movable box (4), the air pump (9) specifically comprises an air pump body (901), a first air intake assembly (12) is fixedly installed on the air pump body (901), a first connecting column (10) is rotatably installed at the center of the bottom surface of the air pump body (901), and an air collecting assembly (11) is arranged below the first connecting column (10); The first air intake assembly (12) specifically comprises a first air intake pipe (1201) fixedly connected to the air pump body (901), a rubber pad (1202) fixedly mounted on the upper end of the first air intake pipe (1201), a permanent magnet (1204) slidably mounted inside the first air intake pipe (1201), and a sealing plug (1203) used in conjunction with the rubber pad (1202) fixedly mounted on the upper end surface of the permanent magnet (1204), an electromagnet (1205) slidably mounted on the outer wall of the first air intake pipe (1201), a support platform (1206) fixedly mounted below the electromagnet (1205) on the air pump body (901), a second return spring (1207) arranged between the support platform (1206) and the electromagnet (1205), and two ends of the second return spring (1207) are respectively fixedly connected to corresponding positions on the electromagnet (1205) and the support platform (1206); The second air intake assembly (13) comprises a winding column (1301) fixedly mounted on the upper surface of the mobile box (4); a gas delivery hose (1302) is wound around the outer wall of the winding column (1301); one end of the gas delivery hose (1302) passes through the interior of the electromagnet (1205) and is fixedly connected to the first air intake pipe (1201); The movable box (4) is provided with a lifting assembly (6), the lifting assembly (6) comprising two groups of scissor-type lifting frames (601), the two groups of scissor-type lifting frames (601) being respectively arranged on both sides of the movable box (4), the upper end surface of the mounting plate (602) being provided with a first adjustment assembly (14), the first adjustment assembly (14) comprising a gear ring (1401) rotatably connected to the upper end surface of the mounting plate (602), a second limiting ring (1307) being fixedly mounted on the inner wall of the gear ring (1401), a second air intake pipe (1306) being fixedly mounted on the second limiting ring (1307), and the lower end of the second air intake pipe (1306) being fixedly connected to the other end of the air delivery hose (1302).

2. The exhaust gas sampling device according to claim 1, characterized in that: The piston assembly (8) specifically comprises a piston cylinder (801) movably connected to the installation pipe (3); a piston plate (803) is movably installed inside the piston cylinder (801); a piston rod (802) is fixedly installed on the upper surface of the piston plate (803); one end of the piston rod (802) passes through a corresponding position on the piston cylinder (801) and extends to the outside of the piston cylinder (801); a plurality of gas injection holes (703) are provided on the outer wall of the upper end of a docking pipe (701) arranged opposite to the piston cylinder (801); a first fixing block (704) is fixedly installed on the upper end of the docking pipe (701); a first return spring (705) is fixedly connected to the bottom surface of the first fixing block (704); the other end of the first return spring (705) is fixedly connected to a blocking block (706) arranged to match the inner diameter of the docking pipe (701); and a clearance groove (702) is provided at the lower end of the docking pipe (701).

3. The exhaust gas sampling device according to claim 2, characterized in that: The upper surface of the mounting plate (602) is located on one side of the gear ring (1401) and is rotatably mounted with a gear (1402) meshing with the gear ring (1401); the upper end surface of the mounting plate (602) is located on one side of the gear (1402) and is movably mounted with a movable block (1403); one end of the movable block (1403) close to the gear (1402) is rotatably connected to a first rotating shaft (1405); a ratchet (1404) is fixedly connected to the first rotating shaft (1405); the ratchet (1404) The end of the movable block (1403) is engaged with the corresponding position on the gear (1402), and the second rotating shaft (1406) and the protrusion (1407) are fixedly connected on both sides of the end away from the gear (1402), wherein the ends of the second rotating shaft (1406) and the first rotating shaft (1405) are both provided with torsion springs, and a cam (1408) is rotatably installed on the upper surface of the mounting plate (602) at a position corresponding to the protrusion (1407), and a groove (1409) is provided on one side of the cam (1408).

4. The exhaust gas sampling device according to claim 3, characterized in that: A rotating block (1303) is rotatably mounted at the center of the upper surface of the winding column (1301); a connecting rod (1304) is fixedly connected to the outer wall of the rotating block (1303); a first limiting ring (1305) is fixedly mounted at the end of the connecting rod (1304); and the end of the air supply hose (1302) passes through the interior of the first limiting ring (1305) and is connected to the end of the second air inlet pipe (1306).

5. The exhaust gas sampling device according to claim 4, characterized in that: The outer wall of the vacuum pump body (901) is provided with a rectangular groove, a moving block (902) is slidably mounted inside the rectangular groove, an air outlet pipe (903) is fixedly mounted on the moving block (902), and an extrusion sensor (904) is fixedly mounted at the lower end of the inner part of the rectangular groove.

6. The exhaust gas detection sampling device according to claim 5, characterized in that: The gas collecting assembly (11) comprises a second connecting column (1103) fixedly connected to the bottom surface of the first connecting column (10), the outer wall of the second connecting column (1103) is provided with a slide groove (1104), the outer wall of the second connecting column (1103) is slidably mounted with a supporting tray (1105) through the slide groove (1104), the outer wall of the supporting tray (1105) is provided with a plurality of placement grooves (1107) at equal intervals, and the inner part of the placement groove (1107) is snap-fitted with a gas collecting bag (1106).

7. The exhaust gas detection sampling device according to claim 6, characterized in that: A third fixed block (1108) is fixedly installed on the upper surface of the supporting tray (1105) at a position corresponding to the placement groove (1107), and limiting sliders (1109) are slidably installed at both ends of the third fixed block (1108). The upper end of the air collecting bag (1106) is fixedly connected with a clamping block (1110) used in conjunction with the third fixed block (1108), and a plug-in tube (1102) is fixedly installed on the upper end surface of the clamping block (1110), and the plug-in tube (1102) is connected to the interior of the air collecting bag (1106).

8. The exhaust gas sampling device according to claim 7, characterized in that: A rotating disk (1101) is fixedly mounted on the lower end of the second connecting column (1103); second fixing blocks (16) are fixedly mounted on both sides of the rotating disk (1101) on the inner wall of the movable box (4); one end of the second fixing block (16) is slidably connected to the outer wall of the rotating disk (1101).

9. The exhaust gas detection sampling device according to claim 8, characterized in that: The bottom surface of the rotating disk (1101) is provided with a second adjustment component (15), the second adjustment component (15) comprises an active rotating disk (1501) rotatably connected to the inner wall of the bottom surface of the moving box (4), a sliding column (1502) is fixedly installed at the edge position of the upper end surface of the active rotating disk (1501), the second adjustment component (15) further comprises a connecting frame (1504) fixedly connected to the bottom surface of the rotating disk (1101), the end of the connecting frame (1504) is commonly fixedly connected to a guide disk (1503), a plurality of guide grooves (1505) used in conjunction with the sliding column (1502) are formed through the guide disk (1503), and the end of the sliding column (1502) is slidably installed inside the guide groove (1505).

10. The exhaust gas detection sampling device according to claim 1, characterized in that: Two groups of rollers (5) are movably mounted on the bottom of the movable box (4), and electric telescopic rods are arranged between the two groups of rollers (5) and the movable box (4).

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