Portable gas sampling device

Abstract

The utility model discloses a portable gas sampling device which comprises a sampling box, a channel and a plurality of sample cavities are arranged in the sampling box, the top ends of the sample cavities are communicated with gas inlets, electric control valves are arranged on the gas inlets, the gas inlets are communicated with the channel, and the bottom ends of the sample cavities are communicated with gas outlets. An electric control valve is arranged on the air outlet, an air filtering box is fixedly installed on one side of the sampling box, an air pump is fixedly installed in one end of the channel, the input end of the air pump is led into one end of the air filtering box, and the output end of the air pump is located in the channel; a sampling nozzle communicated with the interior of the air filter box is arranged at the other opposite end of the air filter box, an exhaust port communicated with the interior of the channel is formed in one end, deviating from the air pump, of the interior of the channel, and an electric control valve is fixedly mounted on the exhaust port. The gas sampling device is of a box structure, is convenient to carry, can sample multiple groups of different gas samples, can discharge interference gas during sampling, and ensures the sampling accuracy.

Description

Technical Field

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

[0002] An air sampler is an experimental auxiliary instrument that monitors the environment by inhaling the gas in the air. With the improvement of people's living standards and the frequent occurrence of various environmental problems caused by air quality, people pay more and more attention to air quality. Generally, an air sampler needs to sample at multiple locations, and the air components at each location are different. Therefore, the air remaining inside the sampler will affect the components of the next sampling sample and the accuracy of the experiment. Content of the Utility Model

[0003] The purpose of this application is to provide a portable gas sampling device to solve the problems raised in the above background art.

[0004] To achieve the above purpose, this application provides the following technical solution: A portable gas sampling device includes a sampling box. Inside the sampling box, there are a channel and several sample chambers. The top of the sample chamber is connected to an air inlet, and an electric control valve is provided on the air inlet and the air inlet is connected to the channel. The bottom of the sample chamber is connected to an air outlet, and an electric control valve is provided on the air outlet. On one side of the sampling box, a filter box is fixedly installed. Inside one end of the channel, an air pump is fixedly installed. The input end of the air pump leads into one end of the filter box, and the output end of the air pump is located inside the channel. On the opposite end of the filter box, there is a sampling nozzle connected to its interior. Inside the channel, at the end away from the air pump, there is an exhaust port connected to its interior, and an electric control valve is fixedly installed on the exhaust port.

[0005] Preferably, a handle is provided at one end of the sampling box, and the handle is integrally and fixedly connected to the sampling box.

[0006] Preferably, a disinfection lamp tube is fixedly installed inside the channel along the length direction of the channel.

[0007] Preferably, filter cotton is placed inside the filter box. One side of the filter box is provided with a cover plate. One end of the cover plate is hinged to the filter box, and the other end of the cover plate is hermetically and snap-connected to the filter box.

[0008] Preferably, telescopic support legs are fixedly installed at the end of the sampling box away from the handle, and a support plate is fixedly connected to the other end of the telescopic support legs away from the sampling box.

[0009] Preferably, a rechargeable power source is fixedly installed inside the sampling box, and the power source is electrically connected to the disinfection lamp tube, the air pump, and each electric control valve.

[0010] Preferably, the sampling box is made of stainless steel material.

[0011] In summary, the technical effects and advantages of the present utility model are as follows:

[0012] In the present utility model, the overall structure is a box structure, which is convenient to carry. It is provided with multiple sample chambers, capable of sampling multiple groups of different gas samples. During sampling, the interfering gases remaining in the channels and the sample chambers can be discharged, ensuring the sampling accuracy of each sampling chamber. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order 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 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.

[0014] Figure 1 It is a cross-sectional structure schematic diagram of a portable gas sampling device in an embodiment of the present application;

[0015] Figure 2 It is an external structure schematic diagram of a portable gas sampling device in an embodiment of the present application.

[0016] In the figure: 1, sampling box; 2, channel; 3, sample chamber; 4, air inlet; 5, air pump; 6, air filter box; 7, sampling nozzle; 8, air filter cotton; 9, cover plate; 10, exhaust port; 11, handle; 12, support plate; 13, telescopic support leg; 14, power supply; 15, air outlet; 16, disinfection lamp tube. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0017] The following will clearly and completely describe the technical solutions in the embodiments of the present utility model with reference to the drawings in the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, rather than all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0018] In the description of the present disclosure, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", "top", "bottom", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present disclosure and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present disclosure. In addition, the terms "first", "second", "third" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0019] It should also be noted that the standard parts used in this application document can all be purchased from the market, and can also be customized according to the description in the specification and the drawings. Unless otherwise clearly specified and limited, the terms "installed", "connected", "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, and can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present disclosure can be understood according to specific circumstances. And in the case of no clear limitation, the machinery, parts and equipment can all adopt the conventional models in the prior art.

[0020] In this article, the term "comprising" is intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements not only includes those elements, but also includes other elements not expressly listed, or further includes elements inherent to such process, method, article or device. Without further limitation, the elements defined by the statement "comprising..." do not exclude the presence of additional identical elements in the process, method, article or device comprising the said elements.

[0021] Example: Refer to Figure 1-2A portable gas sampling device shown in the figure includes a sampling box 1. Inside the sampling box 1, there are a channel 2 and several sample chambers 3. At the top of the sample chamber 3, there is an air inlet 4 which is connected to the channel 2 and is equipped with an electric control valve. At the bottom of the sample chamber 3, there is an air outlet 15 which is also equipped with an electric control valve. On one side of the sampling box 1, there is a filter box 6 fixedly installed. Inside one end of the channel 2, there is an air pump 5 fixedly installed. The input end of the air pump 5 leads into one end of the filter box 6, and the output end of the air pump 5 is located inside the channel 2. At the opposite end of the filter box 6, there is a sampling nozzle 7 communicating with its interior. At the end of the channel 2 away from the air pump 5, there is an exhaust port 10 communicating with its interior, and an electric control valve is fixedly installed on the exhaust port 10. When in use, first open the electric control valve of the exhaust port, then start the air pump, align the sampling nozzle with the gas source, and then the air pump sucks the gas from the gas source into the channel. The sampled gas discharges the residual gas inside the channel from the exhaust port. Then open the electric control valves of the air inlet and air outlet of the sample chamber, and close the electric control valve of the exhaust port, so that the sampled gas enters the sample chamber and takes away the residual gas inside the sample chamber. Then the sample chamber is filled with the sample gas. Then turn off the air pump and close the electric control valves of the air inlet and air outlet of the sample chamber. In this way, it is ensured that the newly sampled gas in the sample chamber is the target gas of the gas source, ensuring the accuracy of sampling.

[0022] With the above structure: One end of the sampling box 1 is provided with a handle 11, and the handle 11 and the sampling box 1 are fixedly connected as a whole for easy carrying operation.

[0023] With the above structure: Inside the channel 2, there is a disinfection lamp tube 16 fixedly installed along the length direction of the channel 2 to disinfect the inside of the channel and avoid the growth of bacteria.

[0024] With the above structure: Inside the filter box 6, there is filter cotton 8 placed. On one side of the filter box 6, there is a cover plate 9. One end of the cover plate 9 is hinged to the filter box 6, and the other end of the cover plate 9 is adaptively and sealingly buckled with the filter box 6. The gas from the gas source enters the channel after being filtered by the filter cotton, thus removing the moisture and dust of the gas source. The cover plate can be opened to clean or replace the filter cotton.

[0025] With the above structure: At the end of the sampling box 1 away from the handle 11, there is a telescopic support leg 13 fixedly installed. The other end of the telescopic support leg 13 away from the sampling box 1 is fixedly connected with a support plate 12. When in use, the support plate can be placed on the ground to support the sampling box, and the telescopic support leg can adjust the height of the sampling box.

[0026] With the above structure: Inside the sampling box 1, there is a rechargeable power source 14 fixedly installed, and the power source 14 is electrically connected to the disinfection lamp tube 16, the air pump 5, and each electric control valve.

[0027] With the above structure: the sampling box 1 is made of stainless steel material.

[0028] Finally, it should be noted that: the above are only the preferred embodiments of the present invention and are not used to limit the present invention. Although the present invention 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 invention shall be included within the protection scope of the present invention.

Claims

1. A portable gas sampling device, comprising a sampling box (1), characterized in that: The sampling box (1) is provided with a channel (2) and a plurality of sample chambers (3) inside. The top of the sample chamber (3) is connected to an air inlet (4). The air inlet (4) is provided with an electric control valve and the air inlet (4) is connected to the channel (2). The bottom of the sample chamber (3) is connected to an air outlet (15). The air outlet (15) is provided with an electric control valve. A gas filter box (6) is fixedly installed on one side of the sampling box (1). An air pump (5) is fixedly installed inside one end of the channel (2). The input end of the air pump (5) is connected to the inside of one end of the gas filter box (6). The output end of the air pump (5) is located inside the channel (2). A sampling nozzle (7) connected to the inside of the gas filter box (6) is provided at the other end opposite to the gas filter box (6). An exhaust port (10) connected to the inside of the channel (2) is provided at one end of the channel (2) away from the air pump (5). The exhaust port (10) is fixedly installed.

2. A portable gas sampling device according to claim 1, characterized in that: A handle (11) is provided at one end of the sampling box (1), and the handle (11) and the sampling box (1) are fixedly connected as a whole.

3. A portable gas sampling device according to claim 1, characterized in that: A disinfection lamp tube (16) is fixedly installed inside the channel (2) and arranged along the length direction of the channel (2).

4. A portable gas sampling device according to claim 1, characterized in that: Air filter cotton (8) is placed inside the air filter box (6), and a cover plate (9) is provided on one side of the air filter box (6), one end of the cover plate (9) is hingedly connected to the air filter box (6), and the other end of the cover plate (9) is adaptively and sealingly buckled with the air filter box (6).

5. A portable gas sampling device according to claim 1, characterized in that: A telescopic support leg (13) is fixedly mounted on one end of the sampling box (1) away from the handle (11), and a support plate (12) is fixedly connected to the other end of the telescopic support leg (13) away from the sampling box (1).

6. A portable gas sampling device according to claim 1, characterized in that: A rechargeable power source (14) is fixedly installed inside the sampling box (1), and the power source (14) is electrically connected to the disinfection lamp tube (16), the air pump (5), and each electrically controlled valve.

7. A portable gas sampling device according to claim 1, characterized in that: The sampling box (1) is made of stainless steel.

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