Sampling device for air detection

Abstract

The utility model discloses a sampling device for air detection, which relates to the technical field of sampling devices and comprises an air suction cylinder, a collecting pipe and a filter cartridge, sampling medium is fixedly mounted in the collecting pipe, one side of the air suction cylinder is fixedly connected with an air outlet pipe, and the upper end of the air suction cylinder is fixedly connected with an air suction pipe. A plurality of air inlet pipes are fixedly connected to the outer wall of the filter cartridge, the upper end of the filter cartridge is sleeved with a mounting cover in a threaded mode, a cylindrical filter screen is fixedly connected to the middle of the lower end of the mounting cover, a second piston is fixedly connected to the outer wall, close to the lower end, of the cylindrical filter screen in a sleeving mode, and a collecting cover is arranged at the upper end of the second piston. A second piston is arranged at the lower end of the filter screen, and a collecting cover is arranged at the upper end of the second piston, so that falling sundries in the disassembly process of the cylindrical filter screen can be directly shielded and collected by the collecting cover, the sundries are prevented from entering the device, the cleaning difficulty is increased, and practicability is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of sampling devices, in particular to a sampling device for air detection. Background Art

[0002] Air testing refers to the testing of the components in the air and the degree of air pollution. Air quality testing is usually carried out after the construction and decoration of a house is completed. Air sampling devices are essential equipment in the testing process.

[0003] At present, the filter of the sampling device is prone to clogging due to debris after being used for a long time, which affects the filtering effect and needs to be removed for cleaning. However, during the disassembly process, debris can easily fall into the inside of the device due to operational problems, increasing the difficulty of cleaning. In addition, most filters are fixed with bolts, which makes disassembly troublesome. Based on this, we propose an improved sampling device for air detection. Utility Model Content

[0004] The main purpose of the utility model is to provide a sampling device for air detection, which can effectively solve the technical problems in the background technology.

[0005] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0006] A sampling device for air detection comprises a vacuum cylinder, a collecting tube and a filter cylinder, wherein a sampling medium is fixedly installed in the collecting tube, an air outlet pipe is fixedly connected to one side of the vacuum cylinder, an vacuum pipe is fixedly connected to the upper end of the vacuum cylinder, a plurality of air inlet pipes are fixedly connected to the outer wall of the filter cylinder, a mounting cover is threadedly sleeved on the upper end of the filter cylinder, a cylindrical filter is fixedly connected to the middle part of the lower end of the mounting cover, a piston 2 is fixedly sleeved on the outer wall of the cylindrical filter near the lower end, and a collecting cover is provided on the upper end of the piston 2.

[0007] As a further solution of the utility model, the collecting cover is slidably sleeved on the outer wall of the cylindrical filter screen, and the inner groove of the collecting cover is made of an inverted cone structure.

[0008] As a further solution of the utility model, a plurality of the air inlet pipes are evenly distributed on the outer wall of the filter cylinder, and the horizontal height of the air inlet of the plurality of the air inlet pipes is located between the horizontal heights of the uppermost mesh and the lowermost mesh of the cylindrical filter.

[0009] As a further solution of the utility model, a piston is movably sleeved in the vacuum pump, one end of the piston is fixedly connected to a pull rod, and the other end of the pull rod passes through the vacuum pump and is fixedly connected to a handle.

[0010] As a further solution of the utility model, an outlet valve is rotatably provided in the air outlet pipe at a side away from the air pump, and an inlet valve is rotatably provided in the air pump pipe at a side close to the air pump.

[0011] As a further solution of the utility model, the collecting pipe is threadedly sleeved on the outer wall of the exhaust pipe, and the filter cartridge is threadedly sleeved on the inner wall of the upper end of the collecting pipe.

[0012] As a further solution of the utility model, the lower end of the vacuum cylinder is fixedly connected to a support platform, and the lower end surface of the support platform is fixedly connected to four support legs.

[0013] The beneficial effects of the utility model are as follows:

[0014] By setting a cylindrical filter structure, arranging a second piston at the lower end of the filter, and arranging a collecting cover at the upper end of the second piston, the debris dropped by the cylindrical filter during the disassembly process can be directly blocked and collected by the collecting cover, thereby preventing the debris from entering the interior of the device and increasing the difficulty of cleaning. At the same time, the installation cover for fixing the cylindrical filter is threadedly sleeved on the top of the filter cylinder, which is more convenient to disassemble than bolt installation.

[0015] By respectively arranging an outlet valve and an inlet valve in the air outlet pipe and the air extraction pipe of the vacuum cylinder, and cooperating with the pull rod to drive the piston to move, air can be manually extracted, making the device particularly suitable for use in environments with poor air circulation such as indoors, and is practical. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the external structure of a sampling device for air detection according to the utility model;

[0017] Figure 2 This is a schematic diagram of the internal structure of a sampling device for air detection according to the utility model;

[0018] Figure 3 This is another schematic diagram of the internal structure of a sampling device for air detection according to the utility model;

[0019] Figure 4 The utility model is a schematic diagram of the connection structure of a cylindrical filter screen of a sampling device for air detection.

[0020] In the figure: 1. vacuum cylinder; 2. support platform; 3. air outlet pipe; 4. piston one; 5. pull rod; 6. vacuum pipe; 7. outlet valve; 8. inlet valve; 9. collection tube; 10. sampling medium; 11. filter cylinder; 12. air inlet pipe; 13. installation cover; 14. cylindrical filter screen; 15. piston two; 16. collection cover. DETAILED DESCRIPTION

[0021] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further described below in conjunction with specific implementation methods.

[0022] like Figure 1-4 As shown, a sampling device for air detection includes a vacuum cylinder 1, a collecting tube 9 and a filter cylinder 11, a sampling medium 10 is fixedly installed in the collecting tube 9, an air outlet pipe 3 is fixedly connected to one side of the vacuum cylinder 1, an air suction pipe 6 is fixedly connected to the upper end of the vacuum cylinder 1, a plurality of air inlet pipes 12 are fixedly connected to the outer wall of the filter cylinder 11, a mounting cover 13 is threadedly sleeved on the upper end of the filter cylinder 11, a cylindrical filter screen 14 is fixedly connected to the middle part of the lower end of the mounting cover 13, a piston 2 15 is fixedly sleeved on the outer wall of the cylindrical filter screen 14 near the lower end, and a collecting cover 16 is arranged on the upper end of the piston 2 15, when the mounting cover 13 is disassembled later, debris on the outer end of the cylindrical filter screen 14 will fall into the collecting cover 16 and be collected therethrough, so as to prevent debris from falling into the interior of the device and increasing the difficulty of cleaning.

[0023] In this embodiment, the collecting cover 16 is slidably sleeved on the outer wall of the cylindrical filter screen 14 , and the inner groove of the collecting cover 16 is made of an inverted cone structure, which is convenient for collecting the debris dropped from the outer end of the cylindrical filter screen 14 .

[0024] In this embodiment, multiple air intake pipes 12 are evenly distributed on the outer wall of the filter cylinder 11, and the horizontal height of the air inlet of the multiple air intake pipes 12 is located between the horizontal heights of the top and bottom meshes of the cylindrical filter 14, which facilitates the cylindrical filter 14 to filter the air.

[0025] In this embodiment, a piston 4 is movably sleeved in the vacuum pump 1, one end of the piston 4 is fixedly connected to a pull rod 5, and the other end of the pull rod 5 passes through the vacuum pump 1 and is fixedly connected to a handle. The handle can be used to conveniently push and pull the pull rod 5 back and forth, thereby driving the piston 4 to reciprocate.

[0026] In this embodiment, an outlet valve 7 is rotatably provided in the air outlet pipe 3 on the side away from the vacuum cylinder 1, and an inlet valve 8 is rotatably provided in the air suction pipe 6 on the side close to the vacuum cylinder 1. As the piston 4 reciprocates, the outlet valve 7 and the inlet valve 8 are alternately opened and closed, thereby achieving the effect of using the vacuum pipe 6 to draw air and the air outlet pipe 3 to exhaust air.

[0027] In this embodiment, the collecting tube 9 is threadedly sleeved on the outer wall of the exhaust tube 6, and the filter cartridge 11 is threadedly sleeved on the inner wall of the upper end of the collecting tube 9, so that the collecting tube 9 and the filter cartridge 11 are conveniently disassembled and assembled.

[0028] In this embodiment, the lower end of the vacuum pump 1 is fixedly connected to a support platform 2, and the lower end surface of the support platform 2 is fixedly connected to four support legs, so that the vacuum pump 1 can be easily installed on the support platform 2 for use.

[0029] It should be noted that the utility model is a sampling device for air detection. When in use, the installation cover 13 is threadedly sleeved on the upper end of the filter cylinder 11, so that the piston 2 15 enters the interior of the filter cylinder 11, and then the filter cylinder 11 is threadedly sleeved on the upper end of the collection tube 9, and then the collection tube 9 is threadedly sleeved on the outer wall of the suction tube 6 of the vacuum cylinder 1, and then the handle pushes and pulls the pull rod 5 to drive the piston 1 4 to reciprocate in the vacuum cylinder 1, and the external air is drawn into the filter cylinder 11 through the air inlet pipe 12 through the alternating switching of the outlet valve 7 and the inlet valve 8. Then, after being filtered by the cylindrical filter screen 14, it is blown out from the bottom of the piston 2 15 and blown to the sampling medium 10 to collect the sample in the air, and then the sampled air is discharged through the outlet pipe 3, which is convenient and saves trouble.

[0030] The above shows and describes the basic principle and main features of the utility model and the advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. A sampling device for air detection, comprising an air suction cylinder (1), a collecting tube (9) and a filter cylinder (11), wherein a sampling medium (10) is fixedly installed in the collecting tube (9), characterized in that: An air outlet pipe (3) is fixedly connected to one side of the vacuum cylinder (1), an air extraction pipe (6) is fixedly connected to the upper end of the vacuum cylinder (1), a plurality of air inlet pipes (12) are fixedly connected to the outer wall of the filter cylinder (11), a mounting cover (13) is threadedly sleeved on the upper end of the filter cylinder (11), a cylindrical filter screen (14) is fixedly connected to the middle part of the lower end of the mounting cover (13), a piston 2 (15) is fixedly sleeved on the outer wall near the lower end of the cylindrical filter screen (14), and a collecting cover (16) is provided on the upper end of the piston 2 (15).

2. The air sampling device for air detection according to claim 1, characterized in that: The collecting cover (16) is slidably sleeved on the outer wall of the cylindrical filter screen (14), and the inner groove of the collecting cover (16) is made of an inverted cone structure.

3. The air sampling device for air detection according to claim 1, characterized in that: The plurality of air inlet pipes (12) are evenly distributed on the outer wall of the filter cylinder (11), and the air inlet openings of the plurality of air inlet pipes (12) are located at a level between the levels of the uppermost mesh and the lowermost mesh of the cylindrical filter screen (14).

4. The air sampling device for air detection according to claim 1, characterized in that: A piston (4) is movably sleeved in the vacuum pump (1), one end of the piston (4) is fixedly connected to a pull rod (5), and the other end of the pull rod (5) passes through the vacuum pump (1) and is fixedly connected to a handle.

5. The air detection sampling device according to claim 1, characterized in that: An outlet valve (7) is rotatably provided in the air outlet pipe (3) at a side away from the air pump (1), and an inlet valve (8) is rotatably provided in the air pump pipe (6) at a side close to the air pump (1).

6. The air sampling device for air detection according to claim 1, characterized in that: The collecting pipe (9) is threadedly sleeved on the outer wall of the exhaust pipe (6), and the filtering cartridge (11) is threadedly sleeved on the inner wall of the upper end of the collecting pipe (9).

7. The air detection sampling device according to claim 1, characterized in that: The lower end of the vacuum cylinder (1) is fixedly connected to a support platform (2), and the lower end surface of the support platform (2) is fixedly connected to four support legs.

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