Rapid gas sampling device

Abstract

The utility model discloses a quick gas sampling device, which relates to the technical field of gas sampling and comprises a sampling box and a T-shaped pipe. In the gas sampling stage, the first electromagnetic valve is opened, the second electromagnetic valve is closed, the first port is opened, the port is closed, the telescopic cylinder pulls the piston to move downwards, external airflow is transferred into the sampling box through the gas collecting box, the first port and the third port until gas quantitative sampling is completed in the sampling box, and the device body can be filtered through the filter screen in the gas collecting box; in the gas supply stage, the first electromagnetic valve is closed, the second electromagnetic valve is opened, the first port is closed, the second port is opened, the second port is connected with an outer side detection system, the pushing cylinder pushes the piston to reset, gas in the sampling box is transferred to the outer detection system through the third port and the second port, and therefore it is avoided that gas in the front batch and gas in the back batch are mixed; and rapid gas sampling is realized, so that the use efficiency of the gas sampling device is improved.

Description

Technical Field

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

[0002] With the development of the economy and the acceleration of the social urbanization process, environmental protection has become increasingly important. Environmental problems such as construction dust, vehicle exhaust, and industrial emissions are prominent. By accurately and timely forecasting the atmospheric environmental content through environmental monitoring, early warnings can be issued for emergencies. Among them, atmospheric gas sampling is an important step in environmental monitoring.

[0003] For example, a gas sampling device for atmospheric environmental monitoring provided by the patent application number CN202320778927.2 includes a fixed box. An air suction fan is installed on the other side of the top of the fixed box. An air outlet pipe is connected to the top of the other side of the fixed box. A sealing structure is arranged inside the air inlet cylinder; a piston, the piston is slidably connected to the inner cavity of the fixed box. A slide bar is threadedly installed on one side of the top of the piston. A fixing plate and a pressing plate are fixedly connected to the top of the slide bar. A sounding airbag is connected between the top of the pressing plate and the bottom of the fixing plate.

[0004] Based on the above retrieval and combined with the existing technology, it is found that in the prior art, a gas rapid sampling device similar to the above disclosure transports filtered gas into the fixed box through an air suction fan. The gas entering the fixed box presses the piston, and the original gas inside the fixed box can be discharged from the exhaust pipe, avoiding the mixing of the sampled gas and the original gas and affecting the accuracy of the data. In the specific implementation process, after the air suction fan introduces gas into the box body, it can indeed push the piston, but there is a lack of force to quickly reset the piston in the subsequent process, which leads to a relatively slow overall gas sampling process. Therefore, a gas rapid sampling device is proposed to improve the above problems. Summary of the Utility Model

[0005] The purpose of this application is to provide a gas rapid sampling device to solve the problems raised in the above background art.

[0006] To achieve the above purpose, this application provides the following technical solution: A gas rapid sampling device includes a sampling box and a T-shaped pipe. The T-shaped pipe includes port one, port two, and port three. Solenoid valve one and solenoid valve two are respectively integrated inside port two and port three. Port three is communicated with the inner cavity of the sampling box. A filtering component for gas filtration is arranged between the open end of port one and the top of the sampling box. A telescopic cylinder is fixedly connected to the bottom of the sampling box. The output end of the telescopic cylinder is fixedly connected to a piston that is slidably connected to the inner surface of the sampling box.

[0007] As a further supplement to this solution, the filtering component includes a gas collecting box, and the bottom of the gas collecting box is fixedly connected to the top of the sampling box. The gas collecting box is fixedly connected to Port 1, and the T-shaped pipe is in communication with the inside of the gas collecting box. A filter screen is fixedly connected to the inner surface of the gas collecting box.

[0008] As a further supplement to this solution, a cover plate is hinged to the bottom of the open end of the gas collecting box. The cover plate overlaps on the open end of the gas collecting box, and a positioning part for positioning the cover plate is arranged at the top of the gas collecting box.

[0009] As a further supplement to this solution, the positioning part includes a tab. The tab overlaps on the top of the gas collecting box, and the tab is fixedly connected to the top of the gas collecting box through a locking rod.

[0010] As a further supplement to this solution, a plurality of support frames are fixedly connected to the outer surface of the sampling box. The plurality of support frames are distributed in a ring shape, and anti-slip feet are fixedly connected to the bottoms of the plurality of support frames.

[0011] As a further supplement to this solution, a pressing plate is fixedly connected to the top of the piston through a vertical rod. The outer surface of the vertical rod is slidably connected to the inner surface of the top of the sampling box. A sounding airbag is arranged below the pressing plate, and the sounding airbag is fixedly connected to the top of the sampling box.

[0012] In summary, the technical effects and advantages of the present utility model are as follows:

[0013] 1. In the present utility model, during the gas sampling stage, Solenoid Valve 1 is opened and Solenoid Valve 2 is closed, so that Port 1 is opened and Port 2 is closed. The telescopic cylinder pulls the piston downward, and the external air flow is transferred to the inside of the sampling box through the gas collecting box, Port 1, and Port 3 until the gas quantitative sampling of the sampling box is completed. And the filter screen inside the gas collecting box can filter the gas. During the gas delivery stage, Solenoid Valve 1 is closed and Solenoid Valve 2 is opened, so that Port 1 is closed and Port 2 is opened. And Port 2 is connected to the external detection system. The pushing cylinder pushes the piston to reset, and the gas inside the sampling box is transferred to the external detection system through Port 3 and Port 2. In this way, while avoiding the mixing of gases in the front and back batches, rapid gas sampling is achieved, thereby improving the efficiency of the gas sampling device.

[0014] 2. In the present utility model, when the whole device is not in use, flip the cover plate so that it overlaps on the outer surface of the open end of the gas collecting box, and then fix the tab to the gas collecting box through the locking rod, so that the cover plate is stably combined with the open end of the gas collecting box, realizing the sealing of the gas collecting box and avoiding the pollution of the inside of the gas collecting box by external impurities, thereby improving the stability of the gas rapid sampling device. Description of the Drawings

[0015] To more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present application. For those skilled in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0016] Figure 1 It is a schematic three-dimensional structure diagram in this embodiment;

[0017] Figure 2 It is a schematic vertical rod structure diagram in this embodiment;

[0018] Figure 3 It is a schematic T-shaped tube structure diagram in this embodiment;

[0019] Figure 4 It is a schematic sound-generating airbag structure diagram in this embodiment.

[0020] In the figure: 1. Sampling box; 2. Support frame; 3. Telescopic cylinder; 4. T-shaped tube; 401. Port one; 402. Port two; 403. Port three; 5. Vertical rod; 6. Pressing plate; 7. Air collection box; 8. Cover plate; 9. Piston; 10. Latching piece; 11. Locking rod; 12. Filter screen; 13. Solenoid valve one; 14. Solenoid valve two; 15. Sound-generating airbag. Specific implementation manners

[0021] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the drawings in the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, rather than all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the protection scope of the present invention.

[0022] Embodiment: Refer to Figures 1-4 A gas rapid sampling device as shown, including a sampling box 1 and a T-shaped tube 4. The T-shaped tube 4 includes a port one 401, a port two 402 and a port three 403. A solenoid valve one 13 and a solenoid valve two 14 are respectively integrated inside the port two 402 and the port three 403. The port three 403 is communicated with the inner cavity of the sampling box 1. A filtering component for gas filtration is provided between the open end of the port one 401 and the top of the sampling box 1. A telescopic cylinder 3 is fixedly connected to the bottom of the sampling box 1, and the output end of the telescopic cylinder 3 is fixedly connected with a piston 9 that is slidably connected to the inner surface of the sampling box 1;

[0023] During the gas sampling stage, solenoid valve 13 is opened and solenoid valve 14 is closed, causing port 401 to open and port 402 to close. The telescopic cylinder 3 pulls the piston 9 downward, and the external air flow is transferred to the sampling box 1 through the gas collecting box 7, port 401, and port 403 until the gas in the sampling box 1 is quantitatively sampled. The gas can be filtered by the filter screen 12 inside the gas collecting box 7. During the gas delivery stage, solenoid valve 13 is closed and solenoid valve 14 is opened, causing port 401 to close and port 402 to open. Port 402 is connected to the external detection system. The telescopic cylinder 3 pushes the piston 9 to reset, and the gas inside the sampling box 1 is transferred to the external detection system through port 403 and port 402. This avoids the mixing of gases in different batches and enables rapid gas sampling, thus improving the efficiency of the gas sampling device.

[0024] The filtering component includes the gas collecting box 7. The bottom of the gas collecting box 7 is fixedly connected to the top of the sampling box 1. The gas collecting box 7 is fixedly connected to port 401, and the T-shaped pipe 4 is in communication with the inside of the gas collecting box 7. The inner wall of the gas collecting box 7 is fixedly connected with a filter screen 12 to filter the gas. The bottom of the open end of the gas collecting box 7 is hinged with a cover plate 8. The cover plate 8 overlaps on the open end of the gas collecting box 7, and a positioning part for positioning the cover plate 8 is arranged on the top of the gas collecting box 7. The positioning part includes a tab 10. The tab 10 overlaps on the top of the gas collecting box 7, and the tab 10 is fixedly connected to the top of the gas collecting box 7 through a locking rod 11. When the whole device is not in use, the cover plate 8 is flipped to overlap on the outer wall of the open end of the gas collecting box 7, and the tab 10 is fixed to the gas collecting box 7 through the locking rod 11, so that the cover plate 8 is stably combined with the open end of the gas collecting box 7, realizing the sealing of the gas collecting box 7 and preventing external impurities from contaminating the inside of the gas collecting box 7, thus improving the stability of the gas rapid sampling device.

[0025] A plurality of groups of support frames 2 are fixedly connected to the outer surface of the sampling box 1. The plurality of groups of support frames 2 are distributed in a ring shape, and anti-slip feet are fixedly connected to the bottoms of the plurality of groups of support frames 2 to ensure the stability of the overall position of the sampling device. The top of the piston 9 is fixedly connected to a pressing plate 6 through a vertical rod 5, and the outer surface of the vertical rod 5 is slidably connected to the inner surface of the top of the sampling box 1. A sounding airbag 15 is arranged below the pressing plate 6, and the sounding airbag 15 is fixedly connected to the top of the sampling box 1. The pressing plate 6 moves with the piston 9. After the gas inside the sampling box 1 is collected, the pressing plate 6 will compress the sounding airbag 15, and the sounding airbag 15 will emit a sound to remind the staff.

[0026] Working principle of the utility model: During the gas extraction stage, solenoid valve 13 is opened and solenoid valve 14 is closed, so that port 401 is opened and port 402 is closed. The telescopic cylinder 3 pulls the piston 9 downward, and the external air flow is transferred to the sampling box 1 through the air collection box 7, port 401 and port 403 until the gas is quantitatively sampled in the sampling box 1. The gas can be filtered by the filter screen 12 inside the air collection box 7. During the air supply stage, solenoid valve 13 is closed and solenoid valve 14 is opened, so that port 401 is closed and port 402 is opened. Port 402 is connected to the external detection system. The telescopic cylinder 3 pushes the piston 9 to reset, and the gas inside the sampling box 1 is transferred to the external detection system through port 403 and port 402. This avoids the mixing of gases in the front and back batches while realizing rapid gas sampling, thereby improving the efficiency of the gas sampling device. When the whole device is not in use, turn over the cover plate 8 so that it overlaps on the outer wall of the open end of the air collection box 7, and then fix the tab 10 and the air collection box 7 through the locking rod 11, so that the cover plate 8 is stably combined with the open end of the air collection box 7, realizing the sealing of the air collection box 7 and avoiding the pollution of the inside of the air collection box 7 by external impurities, thereby improving the stability of the gas rapid sampling device during use.

[0027] Finally, it should be noted that the above are only the preferred embodiments of the present utility model and are not used to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A gas rapid sampling device, comprising a sampling box (1) and a T-shaped tube (4), characterized in that The T-shaped pipe (4) includes a first port (401), a second port (402) and a third port (403). An electromagnetic valve one (13) and an electromagnetic valve two (14) are respectively integrated inside the second port (402) and the third port (403). The third port (403) is communicated with the inner cavity of the sampling box (1). A filtering assembly for gas filtration is arranged between the open end of the first port (401) and the top of the sampling box (1). A telescopic cylinder (3) is fixedly connected to the bottom of the sampling box (1), and a piston (9) slidably connected to the inner wall of the sampling box (1) is fixedly connected to the output end of the telescopic cylinder (3).

2. The gas rapid sampling device according to claim 1, wherein: The filtering assembly includes a gas collecting box (7), and the bottom of the gas collecting box (7) is fixedly connected to the top of the sampling box (1). The gas collecting box (7) is fixedly connected to the first port (401), and the T-shaped pipe (4) is communicated with the inside of the gas collecting box (7). A filter screen (12) is fixedly connected to the inner wall of the gas collecting box (7).

3. The gas rapid sampling device according to claim 2, characterized in that: A cover plate (8) is hinged to the bottom of the open end of the gas collecting box (7). The cover plate (8) is lapped on the open end of the gas collecting box (7), and a positioning portion for positioning the cover plate (8) is arranged on the top of the gas collecting box (7).

4. The gas rapid sampling device according to claim 3, wherein: The positioning portion includes a lapping piece (10). The lapping piece (10) is lapped on the top of the gas collecting box (7), and the lapping piece (10) is fixedly connected to the top of the gas collecting box (7) through a locking rod (11).

5. The gas rapid sampling device according to claim 4, characterized in that: A plurality of groups of support frames (2) are fixedly connected to the outer wall of the sampling box (1). The plurality of groups of support frames (2) are distributed in a ring shape, and anti-slip feet are fixedly connected to the bottoms of the plurality of groups of support frames (2).

6. The gas rapid sampling device according to claim 5, characterized in that: A pressing plate (6) is fixedly connected to the top of the piston (9) through a vertical rod (5). The outer wall of the vertical rod (5) is slidably connected to the inner wall of the top of the sampling box (1). A sounding airbag (15) is arranged below the pressing plate (6), and the sounding airbag (15) is fixedly connected to the top of the sampling box (1).

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