Adsorption tube sampling auxiliary device

Abstract

The utility model discloses an adsorption tube sampling auxiliary device which comprises a mounting frame, an adsorption tube, an air inlet cylinder and an air outlet cylinder, the adsorption pipe is connected with the mounting frame, the side wall, close to the upper end, of the adsorption pipe is sleeved with a first sealing ring, the side wall, close to the lower end, of the adsorption pipe is sleeved with a second sealing ring, and the first sealing ring and the second sealing ring prevent gas from escaping; the air inlet cylinder covers the upper opening of the adsorption tube, a sealing gasket is arranged at the upper end opening of the air inlet cylinder, the periphery of the first sealing ring is connected with the inner wall of the air inlet cylinder, and the air inlet cylinder is communicated with an air source; the air outlet barrel covers the lower portion of the lower opening of the adsorption pipe, the periphery of the second sealing ring is connected with the inner wall of the air outlet barrel, the lower end of the air outlet barrel is communicated with an air pump, the air outlet barrel is provided with a clamping boss, and a filter screen is arranged on the clamping boss and used for filtering air.

Description

Technical Field

[0001] The utility model relates to the field of auxiliary devices, in particular to an adsorption tube sampling auxiliary device. Background Art

[0002] Usually, when collecting samples of volatile organic compounds (such as benzene series), it is often necessary to adsorb them with an adsorption tube and then transfer the adsorption tube for analysis and testing. However, during the process of adding volatile samples to the adsorption tube and transferring the adsorption tube, the volatilization loss of the samples is likely to occur, affecting the accuracy of the measurement results. Summary of the Utility Model

[0003] The utility model aims to solve at least one of the technical problems existing in the prior art. For this purpose, the utility model provides an adsorption tube sampling auxiliary device, which can reduce the volatilization of samples during the adsorption process.

[0004] An adsorption tube sampling auxiliary device according to an embodiment of the first aspect of the utility model includes: a mounting rack, an adsorption tube, an air inlet cylinder, and an air outlet cylinder; the adsorption tube is connected to the mounting rack, a first sealing ring is sleeved on the side wall of the adsorption tube near the upper end, a second sealing ring is sleeved on the side wall of the adsorption tube near the lower end, and the first sealing ring and the second sealing ring prevent gas from escaping; the air inlet cylinder covers the upper opening of the adsorption tube, the outer periphery of the first sealing ring is connected to the inner wall of the air inlet cylinder, and the air inlet cylinder is connected to a gas source; the air outlet cylinder covers the lower opening of the adsorption tube, the outer periphery of the second sealing ring is connected to the inner wall of the air outlet cylinder, the lower end of the air outlet cylinder is connected to an air extraction pump, a clamping boss is arranged on the air outlet cylinder, and a filter screen is arranged on the clamping boss for filtering gas; a lid is threadedly connected to the upper end of the air inlet cylinder for covering the air inlet cylinder, an opening is arranged at the upper end of the lid, the opening is sealed with a gasket, and the opening is used for passing a sampler.

[0005] An adsorption tube sampling auxiliary device according to an embodiment of the utility model has at least the following beneficial effects: by providing the first sealing ring and the second sealing ring, gas escape can be effectively avoided, the sealing performance of the sampling process can be guaranteed, and the accuracy of sampling can be ensured; the combined design of the mounting rack, the adsorption tube, the air inlet cylinder, and the air outlet cylinder makes the whole device structure compact and easy to use, and the sampling operation can be easily completed; the filter screen arranged on the air outlet cylinder can filter gas, remove impurities and particulate matters therein, and prevent exhaust pollution; the air inlet cylinder is connected to the gas source, which is convenient for filling inert gas, so that the inert gas purges the sampling liquid to form an atomization effect and assists gas volatilization, so that the adsorbent can adsorb the volatile matter more efficiently. The air outlet cylinder is connected to the air extraction pump, and through this design, the extraction of gas can be realized, providing necessary conditions for the high-speed flow of gas.

[0006] According to some embodiments of the present utility model, a plurality of adsorption tubes are provided. The plurality of provided adsorption tubes improve the adsorption efficiency.

[0007] According to some embodiments of the present utility model, the adsorption tubes, the intake cylinder and the exhaust cylinder are arranged in one-to-one correspondence.

[0008] According to some embodiments of the present utility model, a first gas path is further included. The first gas path communicates with a plurality of the intake cylinders, and the first gas path is used to communicate with the gas source.

[0009] According to some embodiments of the present utility model, a second gas path is further included. The second gas path is connected to the lower end of the exhaust cylinder through a quick connector. The second gas path communicates with a plurality of the exhaust cylinders, and the second gas path is used to communicate with the air extraction pump. The provided second gas path facilitates unified exhaust and saves the gas transmission cost.

[0010] According to some embodiments of the present utility model, the mounting bracket is made of a metal material.

[0011] According to some embodiments of the present utility model, the adsorption tubes, the first gas path and the second gas path are made of silica gel.

[0012] According to some embodiments of the present utility model, an adsorbent is provided inside the adsorption tube, and the adsorbent is used to adsorb volatile samples.

[0013] Some additional aspects and advantages of the present utility model will be given in the following description, some will become obvious from the following description, or will be understood through the practice of the present utility model. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The above and / or additional aspects and advantages of the present utility model will become obvious and easy to understand from the description of the embodiments in conjunction with the following drawings, where:

[0015] Figure 1 is a schematic structural diagram of an adsorption tube sampling auxiliary device according to an embodiment of the present utility model Figure 1 ;

[0016] Figure 2 is a schematic structural diagram of an adsorption tube sampling auxiliary device according to an embodiment of the present utility model Figure 2 ;

[0017] Figure 3 is Figure 1 a schematic cross-sectional view of the pipeline shown;

[0018] Figure 4 is Figure 1 a schematic structural diagram of the loading housing shown;

[0019] Figure 5 For Figure 1 the structural schematic diagram of the filter screen shown;

[0020] Figure 6 is the structural schematic of the adsorption tube sampling auxiliary device according to the embodiment of the present utility model Figure 3 .

[0021] Mounting frame 100, outer shell 110, adsorption tube 200, first sealing ring 210, second sealing ring 220;

[0022] Intake cylinder 300, gas source 310;

[0023] Exhaust cylinder 400, clamping boss 410, filter screen 420, air extraction pump 430;

[0024] First air path 500, second air path 600, quick connector 610;

[0025] Cover 700, opening 710, gasket 720. Detailed implementation manners

[0026] The embodiments of the present utility model will be described in detail below. The examples of the embodiments are shown in the drawings, where the same or similar reference numerals represent the same or similar elements or elements with the same or similar functions from beginning to end. The embodiments described below by referring to the drawings are exemplary and are only used to explain the present utility model, and should not be construed as a limitation of the present utility model.

[0027] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by terms such as up, down, front, back, left, right, etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model 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, and therefore should not be construed as a limitation of the present utility model.

[0028] In the description of the present utility model, the meaning of several is one or more, the meaning of multiple is two or more, greater than, less than, exceeding, etc. are understood as not including the number itself, and above, below, within, etc. are understood as including the number itself. If the first and second are described only for the purpose of distinguishing technical features, they should not be understood as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features or implicitly indicating the sequence relationship of the indicated technical features.

[0029] In the description of the present utility model, unless otherwise clearly defined, terms such as setting, installation, connection, etc. should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above terms in the present utility model in combination with the specific content of the technical solution.

[0030] Reference Figures 1 to 6 , an adsorption tube sampling auxiliary device, comprising: a mounting frame 100, an adsorption tube 200, an intake cylinder 300 and an exhaust cylinder 400; the adsorption tube 200 is connected to the mounting frame 100, a first sealing ring 210 is sleeved on the side wall of the adsorption tube 200 near the upper end, and a second sealing ring 220 is sleeved on the side wall of the adsorption tube 200 near the lower end. The first sealing ring 210 and the second sealing ring 220 prevent gas from escaping; the intake cylinder 300 covers the upper opening of the adsorption tube 200, the outer periphery of the first sealing ring 210 is connected to the inner wall of the intake cylinder 300, and the intake cylinder 300 is connected to a gas source 310; the exhaust cylinder 400 covers the lower opening of the adsorption tube 200, the outer periphery of the second sealing ring 220 is connected to the inner wall of the exhaust cylinder 400, the lower end of the exhaust cylinder 400 is connected to a suction pump 430, and the exhaust cylinder 400 is provided with a clamping boss 410, and a filter screen 420 is arranged on the clamping boss 410. The filter screen 420 is used for filtering gas; a lid 700 is threadedly connected to the upper end of the intake cylinder 300. The lid 700 is used to cover the intake cylinder 300, and an opening 710 is arranged at the upper end of the lid 700. The opening 710 is sealed with a gasket 720. The opening 710 is used for passing a sampler; by providing the first sealing ring 210 and the second sealing ring 220, gas escape can be effectively avoided, the sealing performance of the sampling process can be ensured, and the accuracy of sampling can be guaranteed; the combined design of the mounting frame 100, the adsorption tube 200, the intake cylinder 300 and the exhaust cylinder 400 makes the whole device compact in structure and convenient to use, and the sampling operation can be easily completed; the filter screen 420 arranged on the exhaust cylinder 400 can filter gas, remove impurities and particulate matters therein, and prevent exhaust pollution; the intake cylinder 300 is connected to the gas source 310, which is convenient to fill inert gas, so that the inert gas sweeps the sampling liquid to form an atomization effect and assists gas volatilization. In this way, the adsorbent can adsorb the volatile matter more efficiently. The exhaust cylinder 400 is connected to the suction pump 430. Through this design, gas extraction can be realized, providing necessary conditions for the high-speed flow of gas.

[0031] In some embodiments, a plurality of adsorption tubes 200 are provided. The provided plurality of adsorption tubes 200 improves the adsorption efficiency. It can be understood that the adsorption tubes 200 can be provided in two, four, six, etc.

[0032] In some embodiments, the adsorption tubes 200, the intake cylinders 300 and the exhaust cylinders 400 are arranged in one-to-one correspondence.

[0033] In some embodiments, a first gas path 500 is further included. The first gas path 500 connects a plurality of intake cylinders 300, and the first gas path 500 is used to connect to the gas source 310.

[0034] In some embodiments, a second gas path 600 is further included. The second gas path 600 is connected to the lower end of the air outlet cylinder 400 through a quick connector 610. The second gas path 600 communicates with a plurality of air outlet cylinders 400 and is used to communicate with an air extraction pump 430. The arranged second gas path 600 facilitates unified exhaust and saves the gas transmission cost.

[0035] In some embodiments, the mounting bracket 100 is made of metal.

[0036] In some embodiments, the adsorption tube 200, the first gas path 500, and the second gas path 600 are made of silica gel.

[0037] In some embodiments, an adsorbent is arranged in the adsorption tube 200, and the adsorbent is used to adsorb volatile samples. It can be understood that the adsorbent includes specific fillers such as Tenax-Ta, activated carbon, molecular sieve, or expanded quartz.

[0038] In some embodiments, the mounting bracket 100 is further covered with a housing 110 to prevent the device from oxidation and increase its service life.

[0039] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Various changes can be made without departing from the spirit of the present invention within the knowledge scope of those of ordinary skill in the art to which the present invention pertains.

Claims

1. An adsorption tube sampling auxiliary device, characterized in that Including: Mounting bracket (100); Adsorption tube (200), connected to the mounting bracket (100). A first sealing ring (210) is sleeved on the side wall of the adsorption tube (200) near the upper end, and a second sealing ring (220) is sleeved on the side wall of the adsorption tube (200) near the lower end. The first sealing ring (210) and the second sealing ring (220) prevent gas from escaping. Intake cylinder (300), covering the upper opening of the adsorption tube (200). The outer periphery of the first sealing ring (210) is connected to the inner wall of the intake cylinder (300), and the intake cylinder (300) is connected to a gas source (310). Outlet cylinder (400), covering the lower opening of the adsorption tube (200). The outer periphery of the second sealing ring (220) is connected to the inner wall of the outlet cylinder (400). The lower end of the outlet cylinder (400) is connected to an air pump (430). The outlet cylinder (400) is provided with a clamping boss (410), and a filter screen (420) is arranged on the clamping boss (410). The filter screen (420) is used for filtering gas. Cover (700), threadedly connected to the upper end of the intake cylinder (300). The cover (700) is used to cover the intake cylinder (300). An opening (710) is provided at the upper end of the cover (700), and the opening (710) is sealed with a gasket (720). The opening (710) is used for passing a sampler.

2. The adsorption tube sampling auxiliary device according to claim 1, characterized in that, A plurality of the adsorption tubes (200) are provided.

3. The adsorption tube sampling auxiliary device according to claim 2, characterized in that, The adsorption tubes (200), the intake cylinders (300) and the outlet cylinders (400) are arranged in one-to-one correspondence.

4. The adsorption tube sampling auxiliary device according to claim 3, wherein, It further includes a first gas path (500), which connects a plurality of the intake cylinders (300), and the first gas path (500) is used to connect to the gas source (310).

5. An adsorption tube sampling auxiliary device according to claim 4, characterized in that, It further includes a second gas path (600), which is connected to the lower end of the outlet cylinder (400) through a quick connector (610). The second gas path (600) connects a plurality of the outlet cylinders (400), and the second gas path (600) is used to connect to the air pump (430).

6. The adsorption tube sampling auxiliary device according to claim 5, wherein, The mounting bracket (100) is made of metal.

7. An adsorption tube sampling auxiliary device according to claim 6, characterized in that, The adsorption tubes (200), the first gas path (500) and the second gas path (600) are made of silica gel.

8. An adsorption tube sampling auxiliary device according to claim 1, characterized in that, An adsorbent is arranged in the adsorption tube (200), and the adsorbent is used for adsorbing volatile samples.

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