Portable air sample collector

Abstract

The utility model discloses a portable air sample collector, which relates to the technical field of air collection and comprises a portable air sample collecting tube, an annular rubber pad is movably sleeved on the inner wall of the portable air sample collecting tube, a piston is fixedly sleeved on the inner wall of the annular rubber pad, a pull rod is fixedly mounted at the top of the piston, and a handle is fixedly mounted at the bottom of the pull rod. A lower inlet and outlet sleeve is inserted into the bottom of the outer wall of the portable air sample collecting pipe, a lower inlet and outlet gas protective net is fixedly connected to the bottom of the outer wall of the portable air sample collecting pipe, and an annular flat sealing gasket is fixedly connected to the top of the inner wall of the lower inlet and outlet sleeve in a sleeving manner. When the lower gas inlet and outlet protective net is opened and closed, the adjusting screw sleeve is rotated by a tool, the lower inlet and outlet sleeve can move up and down under the action of threaded connection, and meanwhile, the position of the lower gas inlet and outlet protective net is conveniently plugged under the action of the annular flat sealing gasket and the limiting rubber reinforcing ring; and the problem of air leakage is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of air collection, in particular to a portable air sample collector. Background Art

[0002] Microorganisms and various particulate matter contained in the air need to be tested to detect the air quality, making air purification more convenient and targeted. Particles can be collected through air samplers, which can collect a wide range of particles and detect particle size distribution.

[0003] The existing technology has the following problems:

[0004] The existing portable air sample collector is not convenient for filtering the air holes at the top of the portable air sample collection tube when in use, and a certain amount of dust will enter the inner cavity of the portable air sample collection tube, thereby affecting the detection result of the air in the inner cavity of the portable air sample collection tube after collection; the existing portable air sample collector is not convenient for sealing the inlet and outlet air holes at the bottom of the portable air sample collection tube when in use, to prevent the outside air from entering the inner cavity of the portable air sample collection tube again after the air sample is collected, thereby affecting the detection result of the air. Utility Model Content

[0005] The utility model provides a portable air sample collector to solve the problems raised in the above background technology.

[0006] In order to solve the above technical problems, the technical solution adopted by the utility model is:

[0007] A portable air sample collector comprises a portable air sample collection tube, the inner wall of the portable air sample collection tube is movably sleeved with an annular rubber pad, the inner wall of the annular rubber pad is fixedly sleeved with a piston, a pull rod is fixedly installed on the top of the piston, a lower inlet and outlet sleeve is inserted at the bottom of the outer wall of the portable air sample collection tube, a lower inlet and outlet gas protection net is fixedly connected to the bottom of the outer wall of the portable air sample collection tube, an annular flat sealing gasket is fixedly sleeved on the top of the inner wall of the lower inlet and outlet sleeve, a screw is fixedly installed at the bottom of the portable air sample collection tube, a limiting rubber reinforcement ring is fixedly installed on the outer wall of the portable air sample collection tube, an annular screw cover is threadedly connected to the top of the outer wall of the portable air sample collection tube, a cover plate is sleeved on the inner wall of the annular screw cover, and the middle part of the inner wall of the cover plate is filled with filter cotton.

[0008] A further improvement of the technical solution of the utility model is that: an annular rubber sealing pad is movably sleeved on the inner wall of the top of the portable air sample collection tube, and the inner wall of the annular rubber sealing pad is movably sleeved on the outer wall of the pull rod.

[0009] A further improvement of the technical solution of the utility model is that a sealing gasket is fixedly connected to the upper and lower sides of the edge of the cover plate, and one side of the sealing gasket overlaps the top of the portable air sample collection tube and the top of the inner cavity of the annular screw cover.

[0010] A further improvement of the technical solution of the utility model is that a protective isolation net 1 is fixedly installed on the top of the front side of the portable air sample collection tube and located at the bottom of the filter cotton, and a protective filter net 2 is fixedly installed on the top of the front side of the cover plate and located at the top of the filter cotton.

[0011] A further improvement of the technical solution of the utility model is that the bottom of the limiting rubber reinforcement ring overlaps the top of the lower inlet and outlet sleeves, and the inner wall of the annular flat sealing gasket is movably sleeved with the outer wall of the portable air sample collection tube.

[0012] A further improvement of the technical solution of the utility model is that: the bottom of the outer wall of the screw is threadedly connected with an adjusting screw sleeve, and the outer wall of the adjusting screw sleeve is rotatably connected to the bottom of the front side of the lower inlet and outlet sleeves.

[0013] Due to the adoption of the above technical solution, the utility model has achieved the following technical progress compared with the prior art:

[0014] 1. The utility model provides a portable air sample collector. When the lower inlet and outlet gas protection net is opened and closed, the adjusting screw sleeve is rotated by using a tool, so that the lower inlet and outlet sleeves can be moved up and down under the action of the threaded connection. At the same time, the annular flat sealing gasket and the limiting rubber reinforcement ring are used to facilitate the blocking of the position of the lower inlet and outlet gas protection net to avoid leakage.

[0015] 2. The utility model provides a portable air sample collector. When replacing the filter cotton, the inner wall of the annular screw cover can be separated from the top of the portable air sample collection tube by rotating the annular screw cover. The upper and lower sides of the cover edge can be sealed by utilizing the sealing gasket. The connection between the pull rod and the portable air sample collection tube can be sealed by utilizing the annular rubber sealing gasket to prevent air from entering the position of the non-portable air sample collection tube. The protective isolation net 1 and the protective filter net 2 can be used to block the filter cotton so as to replace the filter cotton, thereby affecting the filtering effect on the incoming air. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a cross-sectional structural schematic diagram of the utility model;

[0017] Figure 2 It is a schematic diagram of the enlarged structure of point A of the utility model.

[0018] In the figure: 1. Pull rod;

[0019] 2. Portable air sample collection tube; 21. Annular rubber sealing gasket; 22. Protective isolation net 1; 23. Filter cotton; 24. Protective filter net 2; 25. Cover plate; 26. Sealing gasket; 27. Annular screw cover;

[0020] 3. Piston; 4. Annular rubber pad; 5. Lower inlet and outlet gas protection net;

[0021] 6. Lower inlet and outlet sleeves; 61. Adjusting screw sleeve; 62. Screw; 63. Annular flat sealing gasket; 64. Limiting rubber reinforcement ring. DETAILED DESCRIPTION

[0022] The present invention is further described in detail below in conjunction with the embodiments:

[0023] Example 1

[0024] like Figure 1-2 As shown, the utility model provides a portable air sample collector, including a portable air sample collecting tube 2, the inner wall of the portable air sample collecting tube 2 is movably sleeved with an annular rubber pad 4, the inner wall of the annular rubber pad 4 is fixedly sleeved with a piston 3, the top of the piston 3 is fixedly installed with a pull rod 1, the bottom of the outer wall of the portable air sample collecting tube 2 is plugged with a lower inlet and outlet sleeve 6, the bottom of the outer wall of the portable air sample collecting tube 2 is fixedly connected with a lower inlet and outlet gas protection net 5, the top of the inner wall of the lower inlet and outlet sleeve 6 is fixedly sleeved with an annular flat sealing gasket 63, the bottom of the portable air sample collecting tube 2 is fixedly installed with a screw 62, the outer wall of the portable air sample collecting tube 2 is fixedly installed with a limited rubber reinforcement ring 64, the top of the outer wall of the portable air sample collecting tube 2 is threadedly connected with an annular screw cover 27, the inner wall of the annular screw cover 27 is sleeved with a cover plate 25, and the middle part of the inner wall of the cover plate 25 is filled with filter cotton 23.

[0025] In this embodiment, the lower inlet and outlet sleeve 6 at the bottom is moved downward to expose the lower inlet and outlet gas protection net 5 from the inner cavity of the lower inlet and outlet sleeve 6, and then the pull rod 1 is pushed downward to push the piston 3 and the annular rubber pad 4 downward to discharge the air in the inner cavity at the bottom of the portable air sample collection tube 2, and at the same time, the outside air will enter the inner cavity at the top of the portable air sample collection tube 2 from the air hole at the top of the portable air sample collection tube 2, so that the portable air sample collection tube 2 can be taken to an appropriate position, and the pull rod 1 can be pulled to pull the piston 3 with the annular rubber pad 4 upward, so that the air at the position to be detected can be drawn into the inner cavity at the bottom of the portable air sample collection tube 2, and at the same time, the air wall in the inner cavity at the top of the portable air sample collection tube 2 will be discharged from the air hole at the top of the portable air sample collection tube 2, so as to sample the air, and then the lower inlet and outlet sleeve 6 is moved upward to block the position of the lower inlet and outlet gas protection net 5 to prevent the air in the inner cavity at the bottom of the portable air sample collection tube 2 from circulating with the outside air, thereby affecting the air sampling effect.

[0026] Example 2

[0027] like Figure 1-2 As shown, on the basis of Example 1, the utility model provides a technical solution: preferably, the inner wall of the top of the portable air sample collection tube 2 is movably sleeved with an annular rubber sealing gasket 21, the inner wall of the annular rubber sealing gasket 21 is movably sleeved with the outer wall of the pull rod 1, and the upper and lower sides of the edge of the cover plate 25 are fixedly connected with sealing gaskets 26, one side of the sealing gasket 26 overlaps with the top of the portable air sample collection tube 2 and the top of the inner cavity of the annular screw cover 27, a protective isolation net 22 is fixedly installed on the top of the front side of the portable air sample collection tube 2 and at the bottom of the filter cotton 23, and a protective filter net 24 is fixedly installed on the top of the front side of the cover plate 25 and at the top of the filter cotton 23.

[0028] In this embodiment, the inner wall of the annular screw cover 27 can be separated from the top of the portable air sample collection tube 2 by rotating the annular screw cover 27. The sealing gasket 26 is used to seal the upper and lower sides of the edge of the cover plate 25. The annular rubber sealing gasket 21 is used to seal the connection between the pull rod 1 and the portable air sample collection tube 2 to prevent air from entering the position of the non-portable air sample collection tube 2. The protective isolation net 1 22 and the protective filter net 2 24 are used to block the filter cotton 23 so that the filter cotton 23 can be replaced, thereby affecting the filtering effect of the incoming air.

[0029] Example 3

[0030] like Figure 1-2As shown, on the basis of Example 1, the utility model provides a technical solution: preferably, the bottom of the limiting rubber reinforcement ring 64 overlaps the top of the lower inlet and outlet sleeves 6, the inner wall of the annular flat sealing gasket 63 is movably sleeved with the outer wall of the portable air sample collection tube 2, and the bottom of the outer wall of the screw 62 is threadedly connected with an adjusting screw sleeve 61, and the outer wall of the adjusting screw sleeve 61 is rotatably connected to the bottom of the front side of the lower inlet and outlet sleeves 6.

[0031] In this embodiment, by rotating the adjusting screw sleeve 61 with a tool, the lower inlet and outlet sleeves 6 can be moved up and down under the action of the threaded connection. At the same time, the annular flat sealing gasket 63 and the limiting rubber reinforcement ring 64 are used to facilitate the blocking of the position of the lower inlet and outlet gas protection net 5 to avoid air leakage.

[0032] The working principle of the portable air sample collector is described in detail below.

[0033] like Figure 1-2As shown, first, move the lower inlet and outlet sleeve 6 at the bottom downward to expose the lower inlet and outlet gas protection net 5 from the inner cavity of the lower inlet and outlet sleeve 6, and then push the pull rod 1 downward to push the piston 3 and the annular rubber pad 4 downward to discharge the air in the bottom inner cavity of the portable air sample collection tube 2, and at the same time, the outside air will enter the inner cavity at the top of the portable air sample collection tube 2 from the air hole at the top of the portable air sample collection tube 2, and then the portable air sample collection tube 2 can be taken to an appropriate position, and the pull rod 1 can be pulled to pull the piston 3 with the annular rubber pad 4 upward, so that the air at the position to be detected can be drawn into the inner cavity at the bottom of the portable air sample collection tube 2, and at the same time, the air wall in the inner cavity at the top of the portable air sample collection tube 2 will be discharged from the air hole at the top of the portable air sample collection tube 2, so as to sample the air, and then move the lower inlet and outlet sleeve 6 upward to block the position of the lower inlet and outlet gas protection net 5 to prevent the air in the inner cavity at the bottom of the portable air sample collection tube 2 from flowing with the outside air. The air sampling effect is affected. When the lower inlet and outlet gas protection net 5 is opened and closed, the adjusting screw sleeve 61 is rotated by a tool, and the lower inlet and outlet sleeve 6 can be moved up and down under the action of the threaded connection. At the same time, the annular flat sealing gasket 63 and the limiting rubber reinforcement ring 64 are used to facilitate the blocking of the position of the lower inlet and outlet gas protection net 5 to avoid leakage. When the filter cotton 23 is replaced, the inner wall of the annular screw cover 27 can be separated from the top of the portable air sample collection tube 2 by rotating the annular screw cover 27. The upper and lower sides of the edge of the cover plate 25 are conveniently sealed by the sealing gasket 26. The connection between the pull rod 1 and the portable air sample collection tube 2 is conveniently sealed by the annular rubber sealing gasket 21 to avoid air from entering the non-portable air sample collection tube 2. The protective isolation net 1 22 and the protective filter net 24 are convenient to block the filter cotton 23 so that the filter cotton 23 can be replaced, thereby affecting the filtering effect of the incoming air.

[0034] The above generally describes the present invention in detail, but it is obvious to a person skilled in the art that some modifications or improvements can be made to the present invention. Therefore, modifications or improvements that do not deviate from the spirit of the present invention are within the scope of protection of the present invention.

Claims

1. A portable air sample collector, comprising a portable air sample collection tube (2), characterized in that: The inner wall of the portable air sample collection tube (2) is movably sleeved with an annular rubber pad (4), the inner wall of the annular rubber pad (4) is fixedly sleeved with a piston (3), the top of the piston (3) is fixedly mounted with a pull rod (1), the bottom of the outer wall of the portable air sample collection tube (2) is plugged with a lower inlet and outlet sleeve (6), the bottom of the outer wall of the portable air sample collection tube (2) is fixedly connected with a lower inlet and outlet gas protection net (5), the top of the inner wall of the lower inlet and outlet sleeve (6) is fixedly sleeved with an annular flat sealing pad (63), the bottom of the portable air sample collection tube (2) is fixedly mounted with a screw (62), and the outer wall of the portable air sample collection tube (2) is fixedly mounted with a limited rubber reinforcement ring (64); The top of the outer wall of the portable air sample collection tube (2) is threadedly connected with an annular screw cover (27), the inner wall of the annular screw cover (27) is sleeved with a cover plate (25), and the middle part of the inner wall of the cover plate (25) is filled with filter cotton (23).

2. A portable air sample collector according to claim 1, characterized in that: An annular rubber sealing pad (21) is movably sleeved on the inner wall of the top of the portable air sample collection tube (2), and the inner wall of the annular rubber sealing pad (21) is movably sleeved on the outer wall of the pull rod (1).

3. A portable air sample collector according to claim 1, characterized in that: Sealing gaskets (26) are fixedly connected to the upper and lower sides of the edge of the cover plate (25), and one side of the sealing gasket (26) overlaps the top of the portable air sample collection tube (2) and the top of the inner cavity of the annular screw cover (27).

4. A portable air sample collector according to claim 1, characterized in that: A protective isolation net 1 (22) is fixedly installed on the top of the front face of the portable air sample collection tube (2) and located at the bottom of the filter cotton (23), and a protective filter net 2 (24) is fixedly installed on the top of the front face of the cover plate (25) and located at the top of the filter cotton (23).

5. A portable air sample collector according to claim 1, characterized in that: The bottom of the limiting rubber reinforcement ring (64) overlaps the top of the lower inlet and outlet sleeves (6), and the inner wall of the annular flat sealing gasket (63) is movably sleeved with the outer wall of the portable air sample collection tube (2).

6. A portable air sample collector according to claim 1, characterized in that: The bottom of the outer wall of the screw rod (62) is threadedly connected with an adjusting screw sleeve (61), and the outer wall of the adjusting screw sleeve (61) is rotatably connected to the bottom of the front side of the lower inlet and outlet sleeve (6).

Images