Gas sampling device

Abstract

The utility model discloses a gas sampling device which comprises a base, a lifting device and a sampling device are arranged on the base, the sampling device comprises a gas supply pipe, a main pipeline, a plurality of branch pipelines and a plurality of sampling bottles, the gas supply pipe is communicated with the main pipeline, the plurality of branch pipelines are communicated with the main pipeline, and the sampling bottles are communicated with the main pipeline. The lifting device is arranged, the bearing plate and the sampling bottle on the bearing plate can be driven by the multi-section telescopic oil cylinder to move upwards, the air extracting pump and the sampling bottle can extract air and sample the environment at the high position conveniently, and the air extracting height of the air extracting pump can be adjusted so as to extract air and sample the environment at each height conveniently.

Description

Technical Field

[0001] The utility model relates to the technical field of gas sampling, and more specifically, it relates to a gas sampling device. Background Art

[0002] When detecting ambient gas, it is generally necessary to first use a sampling device to sample the air in different areas and then send it to a laboratory for analysis. Most of the current sampling devices are provided with a single sampling bottle. After sampling, the sampling bottle needs to be disassembled and a new sampling bottle needs to be replaced to sample the air, which is very inconvenient. In addition, the previous air will remain in the pipeline, and other area air will be filled into the sampling bottle during the sampling process, resulting in inaccurate detection data. Content of the Utility Model

[0003] (I) Technical Problems to be Solved

[0004] In view of the problems existing in the prior art, the utility model provides a gas sampling device to solve the technical problems mentioned in the background art.

[0005] (II) Technical Solutions

[0006] To achieve the above object, the utility model provides the following technical solution: A gas sampling device includes a base, on which a lifting device and a sampling device are provided. The sampling device includes an air supply pipe, a main pipeline, branch pipelines and sampling bottles. The air supply pipe is communicated with the main pipeline. There are several branch pipelines and sampling bottles, and several branch pipelines are all communicated with the main pipeline. A connecting mechanism is provided between the sampling bottle and the branch pipeline. A first solenoid valve is provided at the top of the sampling bottle, and a one-way valve is provided at the bottom of the sampling bottle. A second solenoid valve is provided at one end of the main pipeline away from the air supply pipe. The lifting device includes a multi-stage telescopic oil cylinder, a multi-stage telescopic rod, a mounting plate, a connecting frame and a bearing plate. The multi-stage telescopic oil cylinder is fixedly provided on the base, and the top of its telescopic end is fixedly connected with the lower surface of the bearing plate. The multi-stage telescopic rod is fixedly provided on the base, and the top of it is fixedly connected with the lower surface of the bearing plate. The bearing plate and the mounting plate are fixedly connected through the connecting frame.

[0007] The utility model is further arranged such that an air extraction pump is provided on the upper surface of the mounting plate, and a connecting pipe is provided at the top of the air extraction pump. The top of the air supply pipe penetrates through the mounting plate and is communicated with the connecting pipe.

[0008] The present utility model is further configured such that the connection mechanism includes a first connection sleeve, a first limiting ring, a second limiting ring, and a second connection sleeve. The first limiting ring is fixedly sleeved outside the sub-pipeline, the second limiting ring is slidably and rotatably sleeved outside the sub-pipeline, the first connection sleeve is fixedly sleeved outside the second limiting ring, and the first connection sleeve is threadedly sleeved outside the second connection sleeve. The second connection sleeve is fixedly sleeved at the top end of the sampling bottle.

[0009] The present utility model is further configured such that the top end of the sampling bottle is provided with a first chamfer, and the bottom end of the sub-pipeline is provided with a second chamfer that cooperates with the first chamfer.

[0010] The present utility model is further configured such that the bottom end of the base is provided with moving wheels.

[0011] The present utility model is further configured such that a first connection seat is provided outside the main pipeline, and the connection seat and the lower surface of the mounting plate are detachably connected by bolts.

[0012] The present utility model is further configured such that an air suction pipe is provided on the mounting plate. One end of the air suction pipe is provided with an air suction hood, and the other end is communicated with an air extraction pump.

[0013] The present utility model is further configured such that a second connection seat is provided outside the air suction pipe, and the second connection seat and the upper surface of the mounting plate are detachably connected by bolts.

[0014] (III) Beneficial effects

[0015] Compared with the prior art, the present utility model provides a gas sampling device, which has the following beneficial effects:

[0016] 1. In the present utility model, a lifting device is provided, which can drive the receiving plate and the sampling bottle on the receiving plate to move upward through a multi-stage telescopic oil cylinder, facilitating the air extraction pump and the sampling bottle to perform air extraction sampling on the high-altitude environment, and the air extraction height of the air extraction pump can be adjusted so as to perform air extraction sampling on the environments at various heights.

[0017] 2. In the present utility model, a plurality of sampling bottles and a plurality of sub-pipelines are provided, facilitating sampling of a plurality of environments and then removing all the sampling bottles for replacement without frequently replacing the sampling bottles, making the operation more convenient.

[0018] 3. In the present utility model, a one-way valve is provided at the bottom of the sampling bottle, and a first electromagnetic valve is provided at the top end of the sampling bottle. During the sampling process, air can be first introduced into the sampling bottle through the air supply pipe and flushed in the sampling bottle to completely discharge the previously remaining air, and then new air can be stored. Brief description of the drawings

[0019] Figure 1This is a schematic diagram of the overall structure of a gas sampling device in the present utility model;

[0020] Figure 2 This is a schematic diagram of the structure of the sampling device in the present utility model;

[0021] Figure 3 This is a schematic diagram of the connection structure between the main pipeline and the sampling bottle in the present utility model;

[0022] Figure 4 This is a schematic diagram of the structure of the branch pipeline and the sampling bottle in an unconnected state in the present utility model;

[0023] Figure 5 In the present utility model Figure 4 Schematic diagram of another angle.

[0024] In the figure: 1, base; 2, air supply pipe; 3, main pipeline; 4, branch pipeline; 5, sampling bottle; 6, first solenoid valve; 7, one-way valve; 8, second solenoid valve; 9, multi-stage telescopic oil cylinder; 10, multi-stage telescopic rod; 11, mounting plate; 12, connecting frame; 13, receiving plate; 14, air extraction pump; 15, connecting pipe; 16, first connecting sleeve; 17, first limiting ring; 18, second limiting ring; 19, second connecting sleeve; 20, first chamfer; 21, second chamfer; 22, moving wheel; 23, first connecting seat; 24, air suction pipe; 25, air suction hood; 26, second connecting seat. Detailed implementation manners

[0025] It should be noted that, without conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. The present utility model will be described in detail below with reference to the drawings and in combination with the embodiments.

[0026] It should be pointed out that unless otherwise specified, all technical and scientific terms used in the present application have the same meaning as commonly understood by those of ordinary skill in the technical field to which the present application belongs.

[0027] In the present utility model, unless otherwise stated, the orientations such as "upper, lower" are usually with respect to the directions shown in the drawings, or with respect to the vertical, perpendicular or gravitational directions; similarly, for the convenience of understanding and description, "left, right" are usually with respect to the left and right shown in the drawings; "inside, outside" refer to the inside and outside with respect to the contours of the respective components, but the above orientation terms do not limit the present utility model.

[0028] Please refer to Figures 1-5, a gas sampling device, comprising a base 1, on which a lifting device and a sampling device are provided. The sampling device includes an air supply pipe 2, a main pipe 3, branch pipes 4 and sampling bottles 5. The air supply pipe 2 is communicated with the main pipe 3. There are several branch pipes 4 and sampling bottles 5, and several branch pipes 4 are all communicated with the main pipe 3. A connecting mechanism is provided between the sampling bottle 5 and the branch pipe 4. A first solenoid valve 6 is provided at the top end of the sampling bottle 5, and a one-way valve 7 is provided at the bottom end of the sampling bottle 5. A second solenoid valve 8 is provided at one end of the main pipe 3 away from the air supply pipe 2. The lifting device includes a multi-stage telescopic oil cylinder 9, a multi-stage telescopic rod 10, a mounting plate 11, a connecting frame 12 and a bearing plate 13. The multi-stage telescopic oil cylinder 9 is fixedly arranged on the base 1, and the top end of its telescopic end is fixedly connected with the lower surface of the bearing plate 13. The multi-stage telescopic rod 10 is fixedly arranged on the base 1, and the top end of it is fixedly connected with the lower surface of the bearing plate 13. The bearing plate 13 and the mounting plate 11 are fixedly connected through the connecting frame 12. The connecting mechanism includes a first connecting sleeve 16, a first limiting ring 17, a second limiting ring 18 and a second connecting sleeve 19. The first limiting ring 17 is fixedly sleeved outside the branch pipe 4. The second limiting ring 18 is slidably and rotatably sleeved outside the branch pipe 4. The first connecting sleeve 16 is fixedly sleeved outside the second limiting ring 18, and the first connecting sleeve 16 is threadedly sleeved outside the second connecting sleeve 19. The second connecting sleeve 19 is fixedly sleeved at the top end of the sampling bottle 5. A first chamfer 20 is provided at the top end of the sampling bottle 5, and a second chamfer 21 matching the first chamfer 20 is provided at the bottom end of the branch pipe 4.

[0029] In this embodiment, the first chamfer 20 at the top end of the sampling bottle 5 is inserted into the second chamfer 21 at the bottom of the branch pipe 4, the first chamfer 20 and the second chamfer 21 are fitted, and the first connecting sleeve 16 is rotated and threadedly sleeved outside the second connecting sleeve 19. During this process, the sampling bottle 5 is always held by hand to press it tightly against the bottom of the branch pipe 4 until the first limiting ring 17 and the second limiting ring 18 are fitted. At this time, the connection and fixation between the sampling bottle 5 and the branch pipe 4 are realized. In the same way, several sampling bottles 5 are all installed at the bottom of the branch pipe 4.

[0030] Please refer to Figures 1-5 , as an implementation manner of the sampling device: an air extraction pump 14 is provided on the upper surface of the mounting plate 11. A connecting pipe 15 is provided at the top end of the air extraction pump 14. The top end of the air supply pipe 2 penetrates through the mounting plate 11 and is communicated with the connecting pipe 15. Moving wheels 22 are provided at the bottom end of the base 1. A first connecting seat 23 is provided outside the main pipe 3, and the connecting seat and the lower surface of the mounting plate 11 are detachably connected by bolts. An air suction pipe 24 is provided on the mounting plate 11. An air suction hood 25 is provided at one end of the air suction pipe 24, and the other end is communicated with the air extraction pump 14. A second connecting seat 26 is provided outside the air suction pipe 24, and the second connecting seat 26 and the upper surface of the mounting plate 11 are detachably connected by bolts.

[0031] More specifically, a control system is externally provided at the bottom of the base 1 or the receiving plate 13, which is convenient for supplying power and controlling the multi-stage telescopic oil cylinder 9, the first solenoid valve 6, the second solenoid valve 8, the air extraction pump 14, etc. Push the base 1 to move it to the sampling position to be sampled, and start the multi-stage telescopic oil cylinder 9 to drive the receiving plate 13 to move upward until it reaches a suitable position. At this time, start the air extraction pump 14 and open the first solenoid valve 6 on one of the sampling bottles 5. The air extraction pump 14 is used to pump external air into the sampling bottle 5, and the original air in the sampling bottle 5 is discharged through the one-way valve 7. After the air is replaced, close the first solenoid valve 6 and the air extraction pump 14. In the same way, complete the sampling work of multiple sampling bottles 5.

[0032] In summary, when the whole device is in use or operation: insert the first chamfer 20 at the top of the sampling bottle 5 into the second chamfer 21 at the bottom of the sub-pipeline 4, fit the first chamfer 20 and the second chamfer 21, and rotate the first connecting sleeve 16 to thread it outside the second connecting sleeve 19. During this process, always hold the sampling bottle 5 by hand to press it tightly against the bottom of the sub-pipeline 4 until the first limiting ring 17 and the second limiting ring 18 are fitted. At this time, the connection and fixation between the sampling bottle 5 and the sub-pipeline 4 are realized. In the same way, several sampling bottles 5 are all installed at the bottom of the sub-pipeline 4.

[0033] A control system is externally provided at the bottom of the base 1 or the receiving plate 13, which is convenient for supplying power and controlling the multi-stage telescopic oil cylinder 9, the first solenoid valve 6, the second solenoid valve 8, the air extraction pump 14, etc. Push the base 1 to move it to the sampling position to be sampled, and start the multi-stage telescopic oil cylinder 9 to drive the receiving plate 13 to move upward until it reaches a suitable position. At this time, start the air extraction pump 14 and open the first solenoid valve 6 on one of the sampling bottles 5. The air extraction pump 14 is used to pump external air into the sampling bottle 5, and the original air in the sampling bottle 5 is discharged through the one-way valve 7. After the air is replaced, close the first solenoid valve 6 and the air extraction pump 14. In the same way, complete the sampling work of multiple sampling bottles 5.

[0034] In all the above-mentioned solutions, for the connection between two components, welding, the cooperation connection of bolts and nuts, bolt or screw connection, or other well-known connection methods can be selected according to the actual situation, which will not be elaborated one by one here. For those mentioned above that involve fixed connection, welding is preferably considered. Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A gas sampling device, comprising a base (1), characterized in that: The base (1) is provided with a lifting device and a sampling device, and the sampling device comprises an air supply pipe (2), a main pipe (3), a branch pipe (4) and a sampling bottle (5). The air supply pipe (2) is connected to the main pipe (3), and a plurality of branch pipes (4) and sampling bottles (5) are provided, and the plurality of branch pipes (4) are connected to the main pipe (3). A connecting mechanism is provided between the sampling bottle (5) and the branch pipe (4). The top end of the sampling bottle (5) is provided with a first solenoid valve (6), and the bottom end of the sampling bottle (5) is provided with a one-way valve (7). The main pipe (3) is away from the air supply pipe. A second solenoid valve (8) is provided at one end of the pipe (2). The lifting device comprises a multi-section telescopic oil cylinder (9), a multi-section telescopic rod (10), a mounting plate (11), a connecting frame (12) and a receiving plate (13). The multi-section telescopic oil cylinder (9) is fixedly arranged on the base (1), and the top end of the telescopic end thereof is fixedly connected to the lower surface of the receiving plate (13). The multi-section telescopic rod (10) is fixedly arranged on the base (1), and the top end thereof is fixedly connected to the lower surface of the receiving plate (13). The receiving plate (13) and the mounting plate (11) are fixedly connected via the connecting frame (12).

2. A gas sampling device according to claim 1, characterized in that: An air pump (14) is provided on the upper surface of the mounting plate (11), a connecting pipe (15) is provided at the top end of the air pump (14), and the top end of the air supply pipe (2) passes through the mounting plate (11) and is connected to the connecting pipe (15).

3. A gas sampling device according to claim 1, characterized in that: The connecting mechanism comprises a first connecting sleeve (16), a first limiting ring (17), a second limiting ring (18) and a second connecting sleeve (19); the first limiting ring (17) is fixedly sleeved outside the branch pipe (4); the second limiting ring (18) is slidably and rotatably sleeved outside the branch pipe (4); the first connecting sleeve (16) is fixedly sleeved outside the second limiting ring (18); and the first connecting sleeve (16) is threadedly sleeved outside the second connecting sleeve (19); and the second connecting sleeve (19) is fixedly sleeved on the top of the sampling bottle (5).

4. A gas sampling device according to claim 3, characterized in that: The top end of the sampling bottle (5) is provided with a first chamfer (20), and the bottom end of the branch pipe (4) is provided with a second chamfer (21) that matches the first chamfer (20).

5. A gas sampling device according to claim 1, characterized in that: The bottom end of the base (1) is provided with a moving wheel (22).

6. A gas sampling device according to claim 1, characterized in that: A first connection seat (23) is provided outside the main pipeline (3), and the first connection seat (23) and the lower surface of the mounting plate (11) are detachably connected by bolts.

7. A gas sampling device according to claim 2, characterized in that: The mounting plate (11) is provided with an air suction pipe (24), one end of the air suction pipe (24) is provided with an air suction cover (25), and the other end is connected to the air suction pump (14).

8. A gas sampling device according to claim 7, characterized in that: A second connecting seat (26) is provided outside the air intake pipe (24), and the second connecting seat (26) and the upper surface of the mounting plate (11) are detachably connected by bolts.

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