Air sampling device for atmosphere detection

Abstract

The utility model discloses an atmosphere detection air sampling device which comprises two trays, an ejector rod, a lifting assembly and an air tightness detection assembly, the two trays are horizontally arranged at the two ends of the ejector rod, and the ejector rod is located at the non-circle-center position of the two trays; the lifting assembly is arranged between the two trays, and the height of the airtightness detection assembly is adjusted through the lifting assembly; the airtightness detection assembly comprises an adjusting plate, a sampling barrel, a sampling disc, a linkage rod, a position control plate, a pushing frame, an electric telescopic rod, an electromagnetic valve and a dismounting mechanism, the sampling disc is slidably sealed in the sampling barrel, and the position control plate is fixedly mounted at the bottom of the sampling barrel; the linkage rod is mounted on the sampling disc, and the linkage rod penetrates through the position control plate in a sliding manner; and the electric telescopic rod is mounted on the pushing frame. Therefore, the effects of improving the air detection precision and reducing errors can be achieved.

Description

TECHNICAL FIELD

[0001] The utility model relates to air sampling technical field especially relates to a big atmospheric detection air sampling device. BACKGROUND

[0002] Air sampling refers to the method for collecting air samples or polluted air samples, one kind of collection method is to make a large amount of air pass through liquid absorbent or solid adsorbent to enrich the pollutants with low concentration in the air, such as air extraction method, filter membrane method, another kind is to use a container (glass bottle, plastic bag, etc.) to collect air containing pollutants, which is convenient for investigating air pollution sources and can analyze the pollution source profile of each region.

[0003] Among them, in the process of sampling the polluted air by using the container, long-term use can easily cause the aging of the sealing gasket or the deviation of the sealing cover, so that the air tightness of the sampling container cannot be guaranteed, since the air sampling is for sampling and detecting a region or a certain height, if the container after sampling has a leakage point, the air exchange between the leakage point and other regions or other heights of the outside world will occur, so that the sampled air leaks, which affects the detection result of the sampled air. SUMMARY

[0004] The utility model aims at at least one of the technical problems in the related art to some extent.

[0005] Therefore, the utility model provides a big atmospheric detection air sampling device, which can improve the precision of air detection and reduce errors.

[0006] To achieve the above purpose, the utility model provides a big atmospheric detection air sampling device, which comprises two trays, a top rod, a lifting assembly and an air tightness detection assembly, wherein the two trays are horizontally arranged at the two ends of the top rod, and the top rod is located at the non-circular center of the two trays; the lifting assembly is arranged between the two trays, and the air tightness detection assembly is installed on the lifting assembly; the air tightness detection assembly comprises an adjusting plate, a sampling cylinder, a sampling disc, a linkage rod, a position control plate, a pushing frame, an electric telescopic rod, an electromagnetic valve and a dismounting mechanism, wherein the sampling disc is slidingly sealed in the inside of the sampling cylinder, and the position control plate is fixedly installed at the bottom of the sampling cylinder; the linkage rod is installed on the sampling disc, and the linkage rod penetrates and slides the position control plate; the electric telescopic rod is installed on the pushing frame, and the electric telescopic rod abuts against the linkage rod; the sampling disc is provided with the electromagnetic valve for air circulation at the bottom and the top of the sampling disc; the adjusting plate is provided with a through hole, the sampling cylinder is connected with the dismounting mechanism through the through hole, and the dismounting mechanism is rotatably arranged on the adjusting plate.

[0007] In addition, the atmospheric detection air sampling device according to the above application can have the following additional technical features.

[0008] Specifically, the sampling cylinder and the through hole are each provided with a plurality of sampling cylinders and a plurality of through holes.

[0009] Specifically, the lifting assembly comprises a rotating motor, a ball screw and a limiting groove, wherein the rotating motor is installed on one of the trays, one end of the ball screw is connected with the output end of the rotating motor, the adjusting plate is threadedly connected with the ball screw, the other end of the ball screw is connected with the other tray, the limiting groove is U-shaped, and the top rod is slidingly connected in the limiting groove.

[0010] Specifically, the dismounting mechanism comprises two insertion grooves, two fixing grooves, two insertion blocks, two transmission magnets, a positioning pin and a positioning groove, wherein the two insertion grooves are longitudinally arranged on the adjusting plate at opposite positions on both sides of the through hole, the two fixing grooves are transversely arranged on the adjusting plate at opposite positions on both sides of the through hole, and the two insertion grooves are in communication with the corresponding two fixing grooves, the two insertion blocks are slidingly arranged in the two insertion grooves, and the two insertion blocks are connected at opposite sides of the sampling cylinder, the two transmission magnets are respectively connected with the bottom end of the linkage rod and the output end of the electric telescopic rod, and the S pole and the N pole of the two transmission magnets are opposite, and the positioning pin is slidingly arranged on the position control plate, and when the sampling disc is located above the middle part of the sampling cylinder, the positioning groove is located on one side of the positioning pin.

[0011] Specifically, the sampling cylinder is provided with a barometer, and a detection end of the barometer is located in the sampling cylinder.

[0012] Compared with the prior art, the atmospheric detection air sampling device has the following beneficial effects: the atmospheric detection air sampling device can judge the air tightness of the sampling cylinder by observing the change of the barometer after the sampled air is in a compressed state, and the sampling cylinder can be replaced in time when air leakage occurs, so that the precision of detecting air is improved and the error is reduced.

[0013] The additional aspects and advantages of the present application will be partially given in the following description, partially will become obvious from the following description, or will be understood through the practice of the present application. BRIEF DESCRIPTION OF DRAWINGS

[0014] The above and / or additional aspects and advantages of the present application will become apparent and more readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings, in which:

[0015] Figure 1Structure schematic view of atmospheric detection air sampling device of one embodiment of the utility model;

[0016] Figure 2 Structure schematic view of air tightness detection assembly in atmospheric detection air sampling device of one embodiment of the utility model;

[0017] Figure 3 Partial sectional structure schematic view of air tightness detection assembly in atmospheric detection air sampling device of one embodiment of the utility model;

[0018] Figure 4 Structure schematic view of atmospheric detection air sampling device of one embodiment of the utility model Figure 4 Dismounting mechanism in atmospheric detection air sampling device of one embodiment of the utility model;

[0019] Figure 5 Partial sectional structure schematic view of dismounting mechanism in atmospheric detection air sampling device of one embodiment of the utility model;

[0020] Figure 6 Structure schematic view of atmospheric detection air sampling device of one embodiment of the utility model Figure 5 Amplification structure schematic view of A in atmospheric detection air sampling device of one embodiment of the utility model.

[0021] As shown in the figure: 10, tray;20, top rod;30, lifting assembly;301, rotation motor;302, ball screw;303, limit slot;40, air tightness detection assembly;41, adjusting plate;411, through hole;42, sampling cylinder;43, sampling disc;44, linkage rod;45, position control plate;46, push frame;47, electric telescopic rod;48, electromagnetic valve;49, dismounting mechanism;491, plug-in slot;492, fixed slot;493, plug-in block;494, transmission magnet;495, positioning pin;496, positioning slot;50, air pressure gauge. DETAILED DESCRIPTION

[0022] The embodiments of the utility model are described in detail below, the examples of the embodiments are shown in the drawings, wherein the same or similar reference signs represent the same or similar elements or elements with the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary, and are intended to explain the utility model, and cannot be understood as the limitation of the utility model. On the contrary, the embodiments of the utility model include all changes, modifications and equivalents falling within the spirit and scope of the appended claims.

[0023] The atmospheric detection air sampling device of the embodiments of the utility model is described below in conjunction with the drawings.

[0024] As Figures 1-6As shown, the air sampling device for atmospheric detection of the utility model embodiment can include two trays 10, a top rod 20, a lifting assembly 30 and a gas tightness detection assembly 40.

[0025] Two trays 10 are horizontally arranged at both ends of the top rod 20, and the top rod 20 is located at the non-circular center of the two trays 10.

[0026] It should be noted that the offset installation of the top rod 20 gives the gas tightness detection assembly 40 a larger sampling space, so that multiple sampling points can be sampled during air sampling.

[0027] The lifting assembly 30 is arranged between the two trays 10, and the gas tightness detection assembly 40 is installed on the lifting assembly 30.

[0028] It should be noted that the top rod 20 described in this embodiment is welded between the two trays 10.

[0029] The gas tightness detection assembly 40 includes an adjusting plate 41, a sampling cylinder 42, a sampling disc 43, a linkage rod 44, a position control plate 45, a push frame 46, an electric telescopic rod 47, a solenoid valve 48 and a dismounting mechanism 49.

[0030] The sampling disc 43 is slidingly sealed in the inside of the sampling cylinder 42, the position control plate 45 is fixedly installed at the bottom of the sampling cylinder 42, the top end of the linkage rod 44 is fixedly installed on the lower surface of the sampling disc 43, and the linkage rod 44 penetrates and slides in the inside of the position control plate 45, the push frame 46 is U-shaped, the electric telescopic rod 47 is installed on the push frame 46, and the electric telescopic rod 47 is in contact with the linkage rod 44, and the sampling disc 43 is provided with the solenoid valve 48 for air flow between the bottom and the top of the sampling disc 43.

[0031] It can be understood that the up and down movement of the sampling disc 43 will squeeze the gas in the inside of the sampling cylinder 42 or cause negative pressure in the inside of the sampling cylinder 42, and the opening of the solenoid valve 48 can cause the air in the inside of the sampling cylinder 42 to be discharged when the air in the inside of the sampling cylinder 42 is squeezed, and when negative pressure is generated, the outside air can enter the inside of the sampling cylinder 42 through the solenoid valve 48.

[0032] A through hole 411 is formed in the adjusting plate 41; the sampling cylinder 42 is connected with the dismounting mechanism 49 through the through hole 411.

[0033] It can be understood that the bottom of the sampling cylinder 42 is designed as an opening, and the opening is designed to avoid the bottom of the sampling cylinder 42 being in a sealed state, which causes the air to be unable to enter the inside of the sampling cylinder 42 or the gas in the inside of the sampling cylinder 42 to be discharged under certain conditions (such as negative pressure or air being squeezed to generate a certain air pressure), and the through hole 411 is provided to facilitate the subsequent installation of the sampling cylinder 42 and will not affect the normal operation of the transmission structure between the gas tightness detection assemblies 40.

[0034] The dismounting mechanism 49 is rotatably arranged on the adjusting plate 41.

[0035] Specifically, in actual execution, it is necessary to sample air at different heights to determine the pollution degree of air at different heights, and the air tightness detection assembly 40 needs to be adjusted to a certain height. Therefore, when sampling air, the staff controls the lifting assembly 30, controls the output end of the rotating motor 301 through the control switch, makes the ball screw 302 carried by the output end of the rotating motor 301 rotate, and the ball screw 302 rotates to drive the adjusting plate 41 to move, thereby adjusting the height of the air tightness detection assembly 40. After reaching the required height, the lifting assembly 30 stops running, and sampling can be performed.

[0036] When sampling, the output end of the electric telescopic rod 47 is first controlled to reciprocate up and down (the electromagnetic valve 48 is in an open state at this time), and the output end of the electric telescopic rod 47 moves upward to push the transmission magnet 494 and the linkage rod 44, and then the linkage rod 44 pushes the sampling disc 43. The movement of the sampling disc 43 extrudes the air in the sampling cylinder 42. Since the electromagnetic valve 48 is in an open state, the air in the sampling cylinder 42 is extruded and discharged from the inside of the open electromagnetic valve 48.

[0037] When the electric telescopic rod 47 moves downward, the space of the sampling cylinder 42 above the sampling disc 43 is gradually increased, thereby generating negative pressure above the sampling disc 43. The negative pressure generated by the sampling disc 43 can extract air from the outside through the open electromagnetic valve 48, so that the air enters the inside of the sampling cylinder 42. Repeatedly controlling the output end of the electric telescopic rod 47 to reciprocate can achieve multiple extraction of the air in the sampling cylinder 42, thereby reducing the residual gas in the sampling cylinder 42.

[0038] After multiple extractions, when the electric telescopic rod 47 is in a retracted state, the sampling cylinder 42 is filled with gas at this time, and then the electromagnetic valve 48 is closed. After the electromagnetic valve 48 is closed, the output end of the electric telescopic rod 47 is controlled to move upward, and the output end of the electric telescopic rod 47 and the sampling disc 43 move upward, thereby extruding the air in the sampling cylinder 42 by the sampling disc 43. The air containing space above the sampling disc 43 is reduced, thereby increasing the air pressure above the sampling disc 43. After sampling, the height of the sampling cylinder 42 after sampling can be adjusted by the lifting assembly 30, so that the sampling cylinder 42 reaches a height that can be freely taken by the staff.

[0039] The residual air in the sampling cylinder 42 is reduced by multiple pumping, the influence of air from other areas and heights on the sampling height air is reduced, the detection accuracy is improved, and the sampling air leakage is judged by extruding the sampling air, thereby further optimizing the sampling air detection accuracy.

[0040] The sampling cylinder 42 and the through hole 411 are provided in plurality, and the plurality of sampling cylinders 42 and the plurality of through holes 411 are one-to-one corresponding.

[0041] It can be understood that the plurality of sampling cylinders 42 and the structure connected with the plurality of sampling cylinders 42 are for multi-point sampling, and the lifting assembly 30 can also sample air at different heights.

[0042] As shown in Figure 1 The lifting assembly 30 includes a rotating motor 301, a ball screw 302 and a limiting groove 303, wherein the rotating motor 301 is installed on one tray 10, one end of the ball screw 302 is connected with the output end of the rotating motor 301, the adjusting plate 41 is threadedly connected with the ball screw 302, the other end of the ball screw 302 is connected with another tray 10, the limiting groove 303 is U-shaped, and the top rod 20 is slidingly connected in the limiting groove 303.

[0043] It should be noted that the rotating motor 301 is fixed on the upper surface of the bottom tray 10 of the two trays 10 by bolts, the lower surface of the top tray 10 of the two trays 10 is connected with the top end of the ball screw 302, and in order to facilitate the subsequent disassembly, maintenance or replacement of the ball screw 302, a bearing can be inserted into a groove or fixedly connected to the lower surface of the tray 10 to make the ball screw 302 one end inserted, thereby establishing the rotary connection between the tray 10 and the ball screw 302. When disassembling, after the rotating motor 301 is removed, the ball screw 302 can be pulled down to realize the disassembly of the ball screw 302.

[0044] As shown in Figure 3 and Figure 4 The disassembly mechanism 49 includes two plug-in grooves 491, two fixed grooves 492, two plug-in blocks 493, two transmission magnets 494, a positioning pin 495 and a positioning groove 496.

[0045] Two insertion grooves 491 are longitudinally arranged on the opposite sides of the through hole 411 of the adjusting plate 41, two fixing grooves 492 are transversely arranged on the opposite sides of the through hole 411 of the adjusting plate 41, and the two insertion grooves 491 and the corresponding two fixing grooves 492 are in communication with each other, two insertion blocks 493 are slidably arranged in the two insertion grooves 491, and the two insertion blocks 493 are connected to the two sides of the sampling cylinder 42, and two transmission magnets 494 are respectively connected to the bottom end of the linkage rod 44 and the output end of the electric telescopic rod 47, and the S pole and the N pole of the two transmission magnets 494 are opposite.

[0046] The positioning pin 495 is slidably arranged on the position control plate 45, and when the sampling disc 43 is located above the middle part of the sampling cylinder 42, the positioning groove 496 is located on one side of the positioning pin 495, and it is worth noting that the two insertion blocks 493 are integrally formed on the two sides of the sampling cylinder 42, and the two transmission magnets 494 can be attracted to each other when they are close to each other, and the two transmission magnets 494 can be separated, which is convenient for disassembling the sampling cylinder 42 in the subsequent process.

[0047] The sampling cylinder 42 is provided with a barometer 50, and the detection end of the barometer 50 is located in the interior of the sampling cylinder 42.

[0048] Specifically, in the actual operation process, before sampling, the sampling cylinder 42 needs to be installed, when installing, the sampling cylinder 42 is placed directly above the through hole 411, and the opening of the sampling cylinder 42 faces downward, then the sampling cylinder 42 is rotated, the rotation of the sampling cylinder 42 drives the two insertion blocks 493 to rotate, when the insertion block 493 rotates to the upper side of the insertion groove 491, the sampling cylinder 42 is no longer rotated, then the sampling cylinder 42 is pushed to make the sampling cylinder 42 drive the two insertion blocks 493 to enter the interior of the insertion groove 491, when the insertion block 493 moves to the bottom of the insertion groove 491, the sampling cylinder 42 is again rotated to the direction of the fixing groove 492, the rotation of the sampling cylinder 42 drives the insertion block 493 to enter the interior of the insertion groove 491, thereby completing the installation of the sampling cylinder 42.

[0049] It is worth noting that although the installed sampling cylinder 42 cannot move up and down, it may rotate, causing the insertion block 493 to enter the interior of the insertion groove 491, affecting the stability of the installed sampling cylinder 42, therefore, the interval between the insertion block 493 and the fixing groove 492 can be reduced to make the insertion block 493 and the fixing groove 492 tightly connected, so as to improve the stability of the installed sampling cylinder 42.

[0050] Or by increasing the roughness between the insertion block 493 and the fixing groove 492 to increase the friction force to achieve the purpose of improving the stability of the installed sampling cylinder 42, and the stability of the installed sampling cylinder 42 can be realized by limiting the rubber pad.

[0051] It should be noted that the embodiment described in the need to disassemble the sampling cylinder 42, because the sampling disc 43 is compressed at this time the internal air of the sampling cylinder 42, only need to push the positioning pin 495, the positioning pin 495 into the inside of the positioning groove 496, to complete the positioning of the sampling disc 43, and then rotate the sampling cylinder 42, so that the plug-in block 493 is brought into the plug-in groove 491 from the inside of the fixed groove 492, then pull up to complete the disassembly of the sampling cylinder 42, and because of the positioning of the positioning pin 495 and the positioning groove 496, the sampling gas in the sampling cylinder 42 after disassembly is still in a compressed state.

[0052] In summary, the atmospheric detection air sampling device of the embodiment of the present application can judge the air tightness of the sampling cylinder by observing the change of the pressure gauge after the sampled air is in a compressed state, and can replace the sampling cylinder in time when air leakage occurs, so as to improve the precision of air detection and reduce errors.

[0053] In the description of the present application, the terms "first", "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first", "second" can be explicitly or implicitly included at least one of the features. In the description of the present application, the meaning of "a plurality of" is at least two, such as two, three, etc., unless otherwise specifically limited.

[0054] In the description of the present application, the description of the terms "one embodiment", "some embodiments", "example", "specific example" or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In the present application, the illustrative description of the above terms is not necessarily for the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, the skilled in the art can combine and combine the different embodiments or examples described in the present application and the features of different embodiments or examples without contradiction.

[0055] Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limiting the present application. Those skilled in the art can change, modify, replace and deform the above embodiments within the scope of the present application.

Claims

1. An atmospheric detection air sampling device, characterized in that: include: Two trays, ejector rods, lifting components and airtightness detection components, among which, The two trays are arranged at both ends of the top rod; The lifting assembly is arranged between the two trays, and the airtightness detection assembly is installed on the lifting assembly; The airtightness detection assembly includes an adjustment plate, a sampling tube, a sampling plate, a linkage rod, a position control plate, a push frame, an electric telescopic rod, a solenoid valve and a disassembly mechanism, wherein: The sampling disc is slidably sealed inside the sampling cylinder, and the position control board is fixedly installed at the bottom of the sampling cylinder; The linkage rod is installed on the sampling plate, and the linkage rod passes through the sliding position control plate; The electric telescopic rod is installed on the pushing frame, and the electric telescopic rod is in conflict with the linkage rod; The sampling tray is provided with air circulation at the bottom and top of the sampling tray via a solenoid valve; The adjustment plate is provided with a through hole, and the sampling tube is connected to the disassembly mechanism through the through hole; The disassembly mechanism is rotatably arranged on the adjustment plate.

2. The atmospheric detection air sampling device according to claim 1, characterized in that: There are multiple sampling cylinders and multiple through holes, and there is a one-to-one correspondence between the multiple sampling cylinders and the multiple through holes.

3. The atmospheric detection air sampling device according to claim 1, characterized in that: The lifting assembly includes a rotating motor, a ball screw and a limit slot, wherein: The rotating motor is mounted on one of the trays; One end of the ball screw is connected to the output end of the rotary motor; The adjustment plate is threadedly connected to the ball screw, and the other end of the ball screw is connected to the other tray; The limiting groove is U-shaped, and the push rod is slidably connected to the inside of the limiting groove.

4. The air sampling device for atmospheric detection according to claim 1, characterized in that: The disassembly mechanism includes two plug-in slots, two fixing slots, two plug-in blocks, two transmission magnets, a positioning pin and a positioning slot, wherein: The two plug-in slots are provided at opposite positions on both sides of the through hole on the adjustment plate; The two fixing grooves are provided at opposite positions on both sides of the through hole of the adjustment plate, and the two plug-in grooves are connected to the corresponding two fixing grooves; The two plug-in blocks are slidably disposed in the two plug-in slots, and the two plug-in blocks are relatively connected to two sides of the sampling tube; The two transmission magnets are respectively connected to the bottom end of the linkage rod and the output end of the electric telescopic rod, and the S poles and N poles of the two transmission magnets are opposite to each other; The positioning pin can be slidably arranged on the position control plate, and when the sampling disc is located at the upper middle portion of the sampling cylinder, the positioning groove is located on one side of the positioning pin.

5. The air sampling device for atmospheric detection according to claim 2, characterized in that: The sampling cylinder is provided with a pressure gauge, and the detection end of the pressure gauge is located inside the sampling cylinder.

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