Vacuum box gas sampler

Abstract

The utility model discloses a vacuum box gas sampler which comprises a box body, a gas inlet pipe, a control panel, a sampling assembly and an exhaust pipe, the side wall of the box body is provided with an opening and is hinged with a door plate, the top of the box body is provided with a gas inlet and a gas outlet, the gas inlet pipe is arranged at the gas inlet, and the exhaust pipe is arranged at the gas outlet. The control panel is mounted on the front wall of the box body and controls the sampling assembly to work; the sampling assembly comprises an air inlet pump, an air guide pipe and a plurality of air storage bags, the air inlet pump is connected with the air inlet pipe and sucks air outside the box body into the air guide pipe, the air guide pipe is of an annular structure and surrounds the interior of the box body, the end of the air guide pipe is communicated with the exhaust pipe, a plurality of air ports are formed in the bottom of the air guide pipe at equal intervals, and the air storage bags are sequentially installed on the air ports. The vacuum box gas sampler disclosed by the utility model can be used for storing gas in batches in a sampling process so as to meet different sampling and detection requirements.

Description

Technical Field

[0001] The utility model relates to the technical field of gas sampling, in particular to a vacuum box gas sampler. Background Art

[0002] Comprehensive ambient air monitoring can not only improve the supervision and protection of the atmospheric environment, but also provide important data support for air quality management, weather forecasting, health risk assessment and scientific research.

[0003] The existing vacuum box for gas sampling has great limitations. The common method is to store the gas through an air bag. However, after the collection, due to the different masses of particles in the gas, the volume of a single air bag is large. In an air bag without flow, high-mass particles will sink. During detection, it is necessary to sample it multiple times. Since the content of the gas discharged first and the gas discharged later is different, there will be errors in the test results. Therefore, it is necessary to design a vacuum box gas sampler that can store the gas in batches during the sampling process to meet different sampling and detection needs. Utility Model Content

[0004] The utility model aims to provide a vacuum box gas sampler.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A vacuum box gas sampler, characterized in that it comprises a box body, an air inlet pipe, a control panel, a sampling assembly and an exhaust pipe, wherein the box body is provided with an opening on the side wall and is hinged with a door panel, an air inlet and an air outlet are provided on the top of the box body, the air inlet pipe is installed at the air inlet, the exhaust pipe is installed at the air outlet, and the control panel is installed on the front wall of the box body and controls the operation of the sampling assembly;

[0007] The sampling assembly includes an air intake pump, an air duct and multiple air storage bags. The air intake pump is connected to the air intake pipe and draws air outside the box into the air duct. The air duct is an annular structure that surrounds the box and is connected to the exhaust pipe at the end. The air duct is provided with multiple air ports arranged at equal intervals at the bottom, and each of the air storage bags is installed on each air port in turn.

[0008] Furthermore, the air guide tube is provided with a solenoid valve at the air port, the outlet of the solenoid valve is provided with a nut, and the end of the air storage bag is provided with a mounting head that cooperates with the threaded mounting of the nut.

[0009] Furthermore, the air storage bag has a spindle-shaped structure that is small at the top and large at the bottom.

[0010] Furthermore, the sampling assembly also includes a plurality of limiting tube bodies, each of which is sleeved outside the air storage bag and arranged at the bottom of the box body. The box body is provided with an annular flange inside to cooperate with it, and the expansion volume of the air storage bag is limited by the limiting tube body.

[0011] Furthermore, a trumpet-shaped disc is installed on the top of the air intake pipe.

[0012] Furthermore, two handles are provided on the top of the box for users to hold, making it easier to move the box.

[0013] After adopting the above technical solution, the utility model has the following advantages compared with the background technology:

[0014] The utility model provides an air guide tube with multiple air storage bags installed. The air outside the box is sucked along the air guide tube by an air intake pump, and the gas is then stored in the air storage bags in sequence. Multiple samplings are performed and the gas is stored in batches. The vacuum box gas sampler can store the gas in batches during the sampling process to meet different sampling and detection needs. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0016] Figure 2 This is a rear view of the utility model;

[0017] Figure 3 This is a schematic diagram of the internal structure of the box of the utility model;

[0018] Figure 4 This is a schematic diagram of the interior of the box from another angle of the utility model.

[0019] Description of reference numerals:

[0020] Box body 1; air intake pipe 2; control panel 3; sampling assembly 4; exhaust pipe 5; door panel 6; air intake pump 41; air guide pipe 42; air storage bag 43; solenoid valve 44; limit tube body 45. DETAILED DESCRIPTION

[0021] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0022] It should be noted that in the present invention, the terms "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", etc. are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element of the present invention must have a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0023] Example

[0024] Cooperate Figures 1 to 4 As shown, the utility model discloses a vacuum box gas sampler, which is characterized by comprising a box body 1, an air inlet pipe 2, a control panel 3, a sampling component 4 and an exhaust pipe 5, the box body 1 is provided with an opening on the side wall and is hinged with a door panel 6, the top of the box body 1 is provided with an air inlet and an air outlet, the air inlet pipe 2 is installed at the air inlet, the exhaust pipe 5 is installed at the air outlet, and the control panel 3 is installed on the front wall of the box body 1 and controls the operation of the sampling component 4.

[0025] The sampling assembly 4 includes an air intake pump 41, an air guide tube 42 and multiple air storage bags 43. The air intake pump 41 is connected to the air intake pipe 2 and sucks the air outside the box 1 into the air guide tube 42. The air guide tube 42 is an annular structure that surrounds the box 1 and is connected to the exhaust pipe 5 at the end. The air guide tube 42 is provided with multiple air ports arranged at equal intervals at the bottom, and each of the air storage bags 43 is installed on each air port in turn.

[0026] The air guide tube 42 is provided with a solenoid valve 44 at the air port, the outlet of the solenoid valve 44 is provided with a nut, and the end of the air storage bag 43 is provided with a mounting head that matches the threaded mounting of the nut.

[0027] The air storage bag 43 is in a spindle-shaped structure that is small at the top and large at the bottom.

[0028] The sampling assembly 4 also includes a plurality of limiting tube bodies 45, each of which is sleeved outside the air storage bag 43 and arranged at the bottom of the box body 1. The box body 1 is provided with an annular flange inside to cooperate with it, and the expansion volume of the air storage bag 43 is limited by the limiting tube body 45.

[0029] A trumpet-shaped disc is installed on the top of the air inlet pipe 2.

[0030] The top of the box body 1 is provided with two handles for users to hold, so as to facilitate moving the box body 1.

[0031] In this embodiment, an electromagnetic valve is installed at the exhaust pipe 5 for switching to control the direction of air circulation. At the same time, the electromagnetic valves of the air guide pipe 42 are switched on and off in sequence when working to store gas. Only when the front air storage bag 43 is full of gas, the rear air storage bag 43 is put into use.

[0032] In this embodiment, an air duct 42 is provided, and a plurality of air storage bags 43 are installed on the air duct 42. The air outside the box 1 is sucked in along the air inlet pipe 2 by the air intake pump 41, and the gas is then stored in the air storage bags 43 in sequence. Multiple samplings are performed and the gas is stored in batches. A vacuum box gas sampler that can store the gas in batches during the sampling process can meet different sampling and detection requirements.

[0033] The above is only a preferred specific implementation of the utility model, but the protection scope of the utility model is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art within the technical scope disclosed by the utility model should be included in the protection scope of the utility model. Therefore, the protection scope of the utility model should be based on the protection scope of the claims.

Claims

1. A vacuum box gas sampler, characterized in that: It includes a box, an air inlet pipe, a control panel, a sampling assembly and an exhaust pipe. The box is provided with an opening on the side wall and a door panel is hingedly connected. The top of the box is provided with an air inlet and an air outlet. The air inlet pipe is installed at the air inlet, the exhaust pipe is installed at the air outlet, and the control panel is installed on the front wall of the box and controls the operation of the sampling assembly. The sampling assembly includes an air intake pump, an air duct and multiple air storage bags. The air intake pump is connected to the air intake pipe and draws air outside the box into the air duct. The air duct is an annular structure that surrounds the box and is connected to the exhaust pipe at the end. The air duct is provided with multiple air ports arranged at equal intervals at the bottom, and each of the air storage bags is installed on each air port in turn.

2. A vacuum box gas sampler as claimed in claim 1, characterized in that: The air guide pipe is equipped with a solenoid valve at the air port, the outlet of the solenoid valve is provided with a nut, and the end of the air storage bag is provided with a mounting head that matches the threaded mounting of the nut.

3. A vacuum box gas sampler as claimed in claim 2, characterized in that: The air storage bag is in a spindle-shaped structure that is small at the top and large at the bottom.

4. A vacuum box gas sampler as claimed in claim 3, characterized in that: The sampling assembly also includes a plurality of limiting tube bodies, each of which is sleeved outside the air storage bag and arranged at the bottom of the box body. An annular flange is provided inside the box body to cooperate with it, and the expansion volume of the air storage bag is limited by the limiting tube bodies.

5. A vacuum box gas sampler as claimed in claim 1, characterized in that: A trumpet-shaped disc is installed on the top of the air inlet pipe.

6. A vacuum box gas sampler as claimed in claim 1, characterized in that: Two handles are arranged on the top of the box body for users to hold, so as to facilitate moving the box body.

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