Portable detection sampler

Abstract

The utility model discloses a portable detection sampler, which relates to the technical field of gas sampling equipment, and comprises an air exhaust mechanism and a storage mechanism, the air exhaust mechanism comprises a mounting shell, the inner wall of the mounting shell is fixedly connected with an air exhaust pump, the lower surface of the mounting shell is provided with a through hole, and the lower surface of the mounting shell is provided with a butt joint mechanism; the butt joint mechanism comprises a mounting shell, a connecting pipe is fixedly connected to the lower surface of the mounting shell, the interior of the connecting pipe communicates with the through hole, and symmetrically-distributed connecting rods are fixedly connected to the inner wall of the connecting pipe. According to the anti-explosion balloon, air in the anti-explosion balloon is emptied firstly, the spring is in a compressed state, therefore, the spring can generate elastic force, upward force is applied to the sleeve shell, the sleeve shell pushes the sealing block to be tightly matched with the inner wall of the outer threaded pipe, meanwhile, the sealing gasket is tightly attached to the inner wall of the air supply pipe, and the sealing capacity of the air supply pipe is improved; and external air is not easy to enter the air supply pipe.

Description

Technical Field

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

[0002] Environmental protection has been increasingly emphasized. Before air pollution control, it is necessary to detect the air to facilitate targeted treatment. Air sampling is the first step in air treatment. Air samplers are widely used in units such as atmospheric environment monitoring, health and epidemic prevention, labor protection, and scientific research, and can also be used in conjunction with relevant instruments.

[0003] In the prior art, air samplers generally use syringe-type sampling, which has good portability, but the volume of air obtained is small. If a large amount of air is collected, its size needs to be increased. After the size is increased, sampling is not convenient enough. If bag-type sampling is used, air is easily carried in the plastic bag, resulting in impure sampling. Summary of the Utility Model

[0004] The purpose of the utility model is to solve the disadvantages in the prior art that after the size of syringe-type sampling is increased, sampling is not convenient enough, and if bag-type sampling is used, air is easily carried in the plastic bag, resulting in impure sampling, and a portable detection sampler is proposed.

[0005] To achieve the above purpose, the utility model adopts the following technical scheme: A portable detection sampler includes an air extraction mechanism and a storage mechanism. The air extraction mechanism includes an installation housing. An air extraction pump is fixedly connected to the inner wall of the installation housing. A through hole is opened on the lower surface of the installation housing. A docking mechanism is arranged on the lower surface of the installation housing. The docking mechanism includes the installation housing. A connecting pipe is fixedly connected to the lower surface of the installation housing, and the inside of the connecting pipe is communicated with the through hole. Symmetrically distributed connecting rods are fixedly connected to the inner wall of the connecting pipe. One end of the connecting rod is fixedly connected to a top rod. An internal thread part is arranged on the inner wall of the bottom of the connecting pipe. The storage mechanism includes an air delivery pipe. An external thread pipe that is threadedly connected to the internal thread part is fixedly connected to the upper surface of the air delivery pipe. An explosion-proof balloon is fixedly connected to one end of the air delivery pipe. A blocking mechanism is arranged inside the air delivery pipe.

[0006] As a further description of the above technical solution:

[0007] The blocking mechanism includes mounting rods and sleeve shells that are distributed in a circular array on the inner wall of the air delivery pipe. One end of the mounting rod is fixedly connected to a sliding rod.

[0008] As a further description of the above technical solution:

[0009] The inner wall of the sleeve shell is slidably connected with a limiting block. One end of the sliding rod is fixedly connected to the limiting block.

[0010] As a further description of the above technical solution:

[0011] A slot is provided on the upper surface of the limiting block, and a spring is inserted into the inner wall of the slot.

[0012] As a further description of the above technical solution:

[0013] A sealing ring is inlaid on the lower surface of the housing, and the inner wall of the sealing ring is slidably connected to the sliding rod.

[0014] As a further description of the above technical solution:

[0015] A sealing block is fixedly connected to the upper surface of the housing. The top shape of the sealing block is adapted to the outer threaded tube, and the top of the sealing block is in close fit with the inner wall of the outer threaded tube.

[0016] As a further description of the above technical solution:

[0017] A sealing gasket is inlaid on the surface of the sealing block.

[0018] As a further description of the above technical solution:

[0019] An air inlet is provided on the upper surface of the installation housing, and a filter screen is fixedly connected to the inner wall of the air inlet on the upper surface of the installation housing.

[0020] As a further description of the above technical solution:

[0021] A sealing plate is provided on the surface of the air extraction pump, and the air extraction pump is fixedly connected to the inner wall of the installation housing through the sealing plate.

[0022] As a further description of the above technical solution:

[0023] An antioxidant layer is coated on the surface of the installation housing.

[0024] The utility model has the following beneficial effects:

[0025] 1. Compared with the prior art, for the portable detection sampler, first, the air inside the explosion-proof balloon is emptied, and the spring is in a non-compressed state. Therefore, the spring will generate elastic force, thereby applying an upward force to the housing. The housing pushes the sealing block to be in close fit with the inner wall of the outer threaded tube, and at the same time makes the sealing gasket in close fit with the inner wall of the air delivery pipe, improving the sealing ability of the air delivery pipe, making it difficult for external air to enter the inside of the air delivery pipe, and making it difficult for the sample air to be contaminated.

[0026] 2. Compared with the prior art, for this portable detection sampler, when the air pump is started, the air pump sucks air from the installation housing through the connecting pipe, external threaded pipe and air supply pipe into the explosion-proof balloon for storage. The air sample is stored through the explosion-proof balloon. The volume of the stored air sample is larger. Before sampling, the explosion-proof balloon is deflated inside and has a small volume, which is convenient for carrying. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 FIG. is a schematic diagram of the overall structure of a portable detection sampler proposed by the present utility model;

[0028] Figure 2 FIG. is a schematic diagram of the internal structure of the installation housing of a portable detection sampler proposed by the present utility model;

[0029] Figure 3 FIG. is a schematic diagram of the structure of the air supply pipe of a portable detection sampler proposed by the present utility model;

[0030] Figure 4 FIG. is a schematic diagram of the internal structure of the air supply pipe of a portable detection sampler proposed by the present utility model;

[0031] Figure 5 FIG. is a schematic diagram of the internal structure of the sleeve of a portable detection sampler proposed by the present utility model;

[0032] Figure 6 FIG. is a portable detection sampler proposed by the present utility model Figure 4 Enlarged view of the structure at A in FIG.

[0033] LEGEND DESCRIPTION:

[0034] 1. Installation housing; 2. Air supply pipe; 3. Air pump; 4. Through hole; 5. Connecting pipe; 6. Connecting rod; 7. Thumb rod; 8. Internal threaded part; 9. External threaded pipe; 10. Explosion-proof balloon; 11. Installation rod; 12. Sliding rod; 13. Sleeve; 14. Spring; 15. Limit block; 16. Slot; 17. Sealing ring; 18. Sealing block; 19. Sealing ring; 20. Filter screen. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0035] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0036] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by terms such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It 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. Therefore, it should not be construed as a limitation to the present utility model; the terms "first", "second", "third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. In addition, unless otherwise clearly specified and defined, the terms "installed", "connected", "connected to" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0037] Embodiment:

[0038] Refer to Figures 1-6, a portable detection sampler provided by the utility model: including an air extraction mechanism and a storage mechanism. The air extraction mechanism includes an installation housing 1, the inner wall of the installation housing 1 is fixedly connected with an air extraction pump 3, a through hole 4 is opened on the lower surface of the installation housing 1, and a docking mechanism is arranged on the lower surface of the installation housing 1. The docking mechanism includes the installation housing 1, a connecting pipe 5 fixedly connected to the lower surface of the installation housing 1, and the inside of the connecting pipe 5 is communicated with the through hole 4. Symmetrically distributed connecting rods 6 are fixedly connected to the inner wall of the connecting pipe 5, air can pass through the connecting rods 6, one end of the connecting rod 6 is fixedly connected with a push rod 7, and an internal thread part 8 is arranged on the inner wall of the bottom of the connecting pipe 5. The storage mechanism includes an air delivery pipe 2, an external thread pipe 9 threadedly connected with the internal thread part 8 is fixedly connected to the upper surface of the air delivery pipe 2, an explosion-proof balloon 10 is fixedly connected to one end of the air delivery pipe 2, and a plugging mechanism is arranged inside the air delivery pipe 2. The plugging mechanism includes mounting rods 11 and sleeve shells 13 distributed in a circular array on the inner wall of the air delivery pipe 2. One end of the mounting rod 11 is fixedly connected with a sliding rod 12, a limiting block 15 is slidably connected to the inner wall of the sleeve shell 13, one end of the sliding rod 12 is fixedly connected with the limiting block 15, a slot 16 is opened on the upper surface of the limiting block 15, a spring 14 is inserted into the inner wall of the slot 16, a sealing ring 17 is embedded on the lower surface of the sleeve shell 13, and the inner wall of the sealing ring 17 is slidably connected with the sliding rod 12. A sealing block 18 is fixedly connected to the upper surface of the sleeve shell 13, the top shape of the sealing block 18 is adapted to the external thread pipe 9, and the top of the sealing block 18 is in close fit with the external thread pipe 9. A sealing gasket 19 is embedded on the surface of the sealing block 18. In the normal state, the spring 14 is in a compressed state, so the spring 14 will generate an elastic force, thereby applying an upward force to the sleeve shell 13. The sleeve shell 13 pushes the sealing block 18 to be in close fit with the inner wall of the external thread pipe 9, and at the same time makes the sealing gasket 19 in close fit with the inner wall of the air delivery pipe 2, improving the sealing ability of the air delivery pipe 2, so that external air is not easily introduced into the inside of the air delivery pipe 2. When sampling at the sampling location, through the threaded fit between the internal thread part 8 at the bottom of the connecting pipe 5 and the external thread pipe 9, the push rod 7 and the air delivery pipe 2 move relatively. By pushing the push rod 7 to move the sealing block 18 downward, the sealing block 18 is separated from the external thread pipe 9, so that the sleeve shell 13 and the sliding rod 12 slide, compressing the spring 14, and air can enter the inside of the air delivery pipe 2 from the external thread pipe 9. Start the air extraction pump 3, and the air extraction pump 3 extracts air from the installation housing 1 through the connecting pipe 5, the external thread pipe 9 and the air delivery pipe 2 and stores it in the explosion-proof balloon 10. When carrying, when carrying the utility model, carry one air extraction mechanism and multiple storage mechanisms, and disassemble the storage mechanism from the air extraction mechanism.

[0039] The upper surface of the installation housing 1 is provided with an air inlet. The inner wall of the installation housing 1 located at the air inlet on the upper surface is fixedly connected with a filter net 20. The filter net 20 removes large particles in the air, so that the air extraction pump 3 is not easily damaged by large particle impurities. The surface of the air extraction pump 3 is provided with a sealing plate, and the air extraction pump 3 is fixedly connected with the inner wall of the installation housing 1 through the sealing plate. The surface of the installation housing 1 is coated with an antioxidant layer, and the antioxidant layer improves the antioxidant ability of the installation housing 1.

[0040] Working principle: It carries an air extraction mechanism and multiple storage mechanisms. When sampling at the sampling location, through the threaded fit between the internal thread part 8 at the bottom of the connecting pipe 5 and the external thread pipe 9, the ejector rod 7 and the air delivery pipe 2 move relative to each other. The ejector rod 7 pushes the sealing block 18 to move downward, and then the sealing block 18 leaves the external thread pipe 9, so that the sleeve 13 and the sliding rod 12 slide, compressing the spring 14, and air can enter the interior of the air delivery pipe 2 from the external thread pipe 9. Start the air extraction pump 3, and the air extraction pump 3 extracts air from the installation housing 1 through the connecting pipe 5, the external thread pipe 9 and the air delivery pipe 2 and stores it in the explosion-proof balloon 10. Then go to the next sampling location to sample. The air sample is stored through the explosion-proof balloon 10. The volume of the stored air sample is larger. Before sampling, the explosion-proof balloon 10 is deflated inside and has a small volume, which is convenient to carry.

[0041] Finally, it should be noted that the above are only the preferred embodiments of the present invention and are not used to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A portable detection sampler, comprising an air extraction mechanism and a storage mechanism, characterized in that: The air extraction mechanism includes an installation housing (1), the inner wall of the installation housing (1) is fixedly connected with an air extraction pump (3), the lower surface of the installation housing (1) is provided with a through hole (4), the lower surface of the installation housing (1) is provided with a docking mechanism, the docking mechanism includes the installation housing (1), the lower surface of the installation housing (1) is fixedly connected with a connecting pipe (5), and the inside of the connecting pipe (5) is communicated with the through hole (4), the inner wall of the connecting pipe (5) is fixedly connected with symmetrically distributed connecting rods (6), one end of the connecting rod (6) is fixedly connected with a push rod (7), the inner wall of the bottom of the connecting pipe (5) is provided with an internal thread portion (8), the storage mechanism includes an air delivery pipe (2), the upper surface of the air delivery pipe (2) is fixedly connected with an external thread pipe (9) threadedly connected with the internal thread portion (8), one end of the air delivery pipe (2) is fixedly connected with an explosion-proof balloon (10), the inside of the air delivery pipe (2) is provided with a blocking mechanism, the blocking mechanism includes mounting rods (11) and sleeve shells (13) distributed in a circular array on the inner wall of the air delivery pipe (2), one end of the mounting rod (11) is fixedly connected with a sliding rod (12), the inner wall of the sleeve shell (13) is slidably connected with a limiting block (15), one end of the sliding rod (12) is fixedly connected with the limiting block (15), the upper surface of the limiting block (15) is provided with a slot (16), a spring (14) is inserted into the inner wall of the slot (16), the lower surface of the sleeve shell (13) is inlaid with a sealing ring (17), the inner wall of the sealing ring (17) is slidably connected with the sliding rod (12), the upper surface of the sleeve shell (13) is fixedly connected with a sealing block (18), the top shape of the sealing block (18) is adapted to the external thread pipe (9), and the top of the sealing block (18) is in close fit with the external thread pipe (9).

2. The portable detection sampler according to claim 1, wherein: A sealing gasket (19) is inlaid on the surface of the sealing block (18).

3. A portable detection sampler according to claim 1, characterized in that: The upper surface of the installation housing (1) is provided with an air inlet, and a filter screen (20) is fixedly connected to the inner wall of the installation housing (1) and located at the air inlet on the upper surface.

4. A portable detection sampler according to claim 1, characterized in that: A sealing plate is arranged on the surface of the air extraction pump (3), and the air extraction pump (3) is fixedly connected to the inner wall of the installation housing (1) through the sealing plate.

5. A portable detection sampler according to claim 1, characterized in that: The surface of the installation housing (1) is coated with an antioxidant layer.

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