Gas sampling device

Abstract

The utility model provides a gas sampling device which comprises a bottom plate, a sampling assembly arranged above the bottom plate, a cabinet body fixedly connected to the top of the bottom plate, a placing plate fixedly connected to the inner wall of the cabinet body, a sealing door arranged on one side of the cabinet body, and moving wheels fixedly connected to four corners of the bottom of the bottom plate. The sampling assembly comprises a fan arranged above the bottom plate, one end of the fan is communicated with a sampling head through a pipeline, the other end of the fan is communicated with a connecting pipe, and one end of the connecting pipe is communicated with a concentration tank. The gas sampling device provided by the utility model solves the problems that when an existing device is actually used, sampled gas is heated, the heated gas is in contact with a condensation plate for condensation, but organic matters in the gas are volatilized in the heating process, so that the purity of a sample is influenced, and the sampling time is shortened. And the air is sampled directly through the suction fan and is inconvenient to collect, so that the use is relatively inconvenient.

Description

Technical Field

[0001] The utility model relates to the technical field of organic compound gas sampling, in particular to a gas sampling device. Background Art

[0002] VOC refers to volatile organic compounds. In the ordinary sense, VOC refers to volatile organic compounds; however, in the environmental sense, it refers to a class of active volatile organic compounds, that is, the kind of volatile organic compounds that can cause harm. VOCs are mainly generated outdoors from fuel combustion and transportation; indoors, they are mainly generated from combustion products such as coal and natural gas, smoke from smoking, heating and cooking, emissions from building and decoration materials, furniture, household appliances, detergents, and human body emissions.

[0003] In the patent document with the publication number CN217520843U, an indoor volatile organic compound gas sampler is disclosed, including a sampler body and a cooling trough body arranged above the sampler body, the internal volume cavity at the bottom end of the sampler body is connected to an air inlet pipe, the inner wall of the air inlet pipe is provided with a suction fan, the end of the air inlet pipe away from the sampler body is connected to an air inlet, the outer surface of the air inlet pipe is provided with a one-way valve, the inner bottom wall of the sampler body is provided with a heater, the inner side wall of the sampler body is fixedly connected to a partition, the upper surface of the partition is provided with a conduit, the upper surface of the sampler body is provided with a positioning hole, the upper surface of the cooling trough body is provided with through holes at both ends, and the lower surface of the cooling trough body is fixedly connected to a condensation plate. In the process of implementing this technical solution, the inventor found that there are at least the following problems in the prior art:

[0004] When the above device is actually used, the sampled gas is heated, and the heated gas contacts the condensation plate for condensation. However, during the heating process, the organic matter in the gas will volatilize, affecting the purity of the sample. Directly sampling the gas through a suction fan is not convenient for collection, and is inconvenient to use.

[0005] Therefore, it is necessary to provide a gas sampling device to solve the above technical problems. Utility Model Content

[0006] In view of this, the purpose of the present invention is to provide a gas sampling device to solve the problems raised in the above background technology.

[0007] The gas sampling device provided by the utility model comprises a base plate, a sampling assembly is arranged above the base plate, the top of the base plate is fixedly connected to a cabinet, the inner wall of the cabinet is fixedly connected to a placement plate, a sealing door is arranged on one side of the cabinet, and moving wheels are fixedly connected to the four corners of the bottom of the base plate.

[0008] As a gas sampling device provided by the utility model, preferably, the sampling component includes a fan arranged above the base plate, one end of the fan is connected to a sampling head through a pipeline, the other end of the fan is connected to a connecting pipe, one end of the connecting pipe is connected to a concentration tank, the bottom of the concentration tank is connected to an exhaust pipe, a collecting tank is arranged on the top of the base plate, and a sealing plug is arranged inside the collecting tank.

[0009] As a gas sampling device provided by the utility model, preferably, a one-way valve is provided on the outer side of the connecting pipe, and a control valve is provided on the outer side of the exhaust pipe.

[0010] As a gas sampling device provided by the utility model, preferably, a fixing rod is fixedly connected to one side of the cabinet, and a fixing seat is fixedly connected to the top of the bottom plate.

[0011] As a gas sampling device provided by the utility model, preferably, a safety lock is arranged inside the sealed door.

[0012] Compared with the prior art, the beneficial effects of the utility model are:

[0013] The gas sampling device is provided with a fan, which sucks gas through a sampling head and discharges it into a connecting pipe. The gas enters a collection tank through the connecting pipe to centrally store the sampled gas. Then, the sealing plug on the top of the collection tank is opened, and the collection tank is connected to the exhaust pipe to allow the gas in the collection tank to enter the collection tank. After the collection is completed, the collection tank is removed, the sealing plug is re-covered, and the collection tank is placed on a placement plate inside a cabinet to store the collection tank. The sealing door is closed to prevent external dust and debris from entering the cabinet. The bottom plate and moving wheels are used to facilitate movement, thereby improving convenience. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 A schematic structural diagram of a preferred embodiment of the gas sampling device provided by the utility model;

[0015] Figure 2 It is a structural schematic diagram of the sampling component shown in the utility model.

[0016] Numbers in the figure: 1. Base plate; 2. Sampling assembly; 21. Fan; 22. Sampling head; 23. Connecting pipe; 24. Concentrating tank; 25. Exhaust pipe; 26. Collecting tank; 27. Sealing plug; 3. Cabinet; 4. Placement plate; 5. Sealing door; 6. Moving wheel; 7. One-way valve; 8. Control valve; 9. Fixing rod; 10. Fixing seat; 11. Safety lock. DETAILED DESCRIPTION

[0017] The utility model is further described below in conjunction with the accompanying drawings and implementation modes.

[0018] Please refer to Figure 1-Figure 2 , a gas sampling device comprises a base plate 1.

[0019] In the specific implementation process, Figure 1 and Figure 2 As shown, a sampling assembly 2 is arranged above the base plate 1, a cabinet 3 is fixedly connected to the top of the base plate 1, a placement plate 4 is fixedly connected to the inner wall of the cabinet 3, a sealing door 5 is arranged on one side of the cabinet 3, and moving wheels 6 are fixedly connected to the four corners of the bottom of the base plate 1.

[0020] The sampling assembly 2 includes a fan 21 arranged above the base plate 1, one end of the fan 21 is connected to a sampling head 22 through a pipeline, the other end of the fan 21 is connected to a connecting pipe 23, one end of the connecting pipe 23 is connected to a concentration tank 24, the bottom of the concentration tank 24 is connected to an exhaust pipe 25, a collecting tank 26 is arranged on the top of the base plate 1, and a sealing plug 27 is arranged inside the collecting tank 26.

[0021] A one-way valve 7 is provided on the outside of the connecting pipe 23 , and a control valve 8 is provided on the outside of the exhaust pipe 25 .

[0022] A fixing rod 9 is fixedly connected to one side of the cabinet 3 , and a fixing seat 10 is fixedly connected to the top of the bottom plate 1 .

[0023] A safety lock 11 is arranged inside the sealed door 5 .

[0024] It should be noted that: by setting up the fan 21, the fan 21 sucks the gas through the sampling head 22 and discharges it into the connecting pipe 23, and the gas enters the central tank 24 through the connecting pipe 23, and the sampled gas is stored in a centralized manner. Then, the sealing plug 27 on the top of the collecting tank 26 is opened, and the collecting tank 26 is connected to the exhaust pipe 25, so that the gas in the central tank 24 enters the collecting tank 26. After the collection is completed, the collecting tank 26 is removed, and the sealing plug 27 is re-covered. The collecting tank 26 is placed on the placement plate 4 inside the cabinet 3 to store the collecting tank 26, and the sealing door 5 is closed to prevent external dust and debris from entering the cabinet 3. The bottom plate 1 and the moving wheels 6 are used to facilitate movement, thereby improving convenience. The one-way valve 7 is used to prevent the gas entering the central tank 24 from flowing back, and the flow of the exhaust pipe 25 is controlled by the control valve 8. The connecting pipe 23 is supported and fixed by the fixing rod 9, the fan 21 is supported and fixed by the fixing seat 10, and the sealing door 5 is protected by the safety lock 11.

[0025] The working principle of a gas sampling device provided by the utility model is as follows:

[0026] When in use, by setting up the fan 21, the fan 21 sucks the gas through the sampling head 22 and discharges it into the connecting pipe 23. The gas enters the central tank 24 through the connecting pipe 23 to centrally store the sampled gas. Then, the sealing plug 27 on the top of the collecting tank 26 is opened, and the collecting tank 26 is connected to the exhaust pipe 25 to allow the gas in the central tank 24 to enter the collecting tank 26. After the collection is completed, the collecting tank 26 is removed, and the sealing plug 27 is re-covered. The collecting tank 26 is placed on the placement plate 4 inside the cabinet 3 to store the collecting tank 26. The sealing door 5 is closed to prevent external dust and debris from entering the cabinet 3. The bottom plate 1 and the moving wheels 6 are used to facilitate movement, thereby improving convenience.

[0027] It should be noted that the fan, one-way valve and control valve are all existing equipment, and those skilled in the art can learn about them through technical manuals or conventional experimental methods. The content of this practical protection does not involve improvements to the internal structure and methods, so they will not be elaborated.

[0028] The above description is only an embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A gas sampling device, characterized in that: It comprises a bottom plate (1), a sampling assembly (2) is arranged above the bottom plate (1), a cabinet (3) is fixedly connected to the top of the bottom plate (1), a placement plate (4) is fixedly connected to the inner wall of the cabinet (3), a sealing door (5) is arranged on one side of the cabinet (3), and moving wheels (6) are fixedly connected to the four corners of the bottom of the bottom plate (1); The sampling assembly (2) comprises a fan (21) arranged above the base plate (1); one end of the fan (21) is connected to a sampling head (22) via a pipeline; the other end of the fan (21) is connected to a connecting pipe (23); one end of the connecting pipe (23) is connected to a concentration tank (24); the bottom of the concentration tank (24) is connected to an exhaust pipe (25); a collecting tank (26) is arranged on the top of the base plate (1); a sealing plug (27) is arranged inside the collecting tank (26).

2. The gas sampling device according to claim 1, characterized in that: A one-way valve (7) is arranged on the outside of the connecting pipe (23), and a control valve (8) is arranged on the outside of the exhaust pipe (25).

3. The gas sampling device according to claim 1, characterized in that: A fixing rod (9) is fixedly connected to one side of the cabinet (3), and a fixing seat (10) is fixedly connected to the top of the bottom plate (1).

4. The gas sampling device according to claim 1, characterized in that: A safety lock (11) is arranged inside the sealed door (5).

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