High negative pressure environment air particulate matter sampler

Abstract

The utility model discloses a high negative pressure environment air particulate matter sampler, and relates to the technical field of particulate matter samplers. A pressurizing cabin is fixedly connected to the middle of the circulating pipe, an eccentric wheel is fixedly connected to the interior of the pressurizing cabin, a telescopic spring is fixedly connected to the top of the heat exchange plate, a heat conduction cylinder is movably connected to the interior of the telescopic spring, and cooling liquid in the pressurizing cabin is extruded into the circulating pipe for circulation through eccentric rotation of the eccentric wheel in the pressurizing cabin; after being in contact with the cooling liquid, the heat exchange plate retracts into the eccentric wheel through eccentric rotation of the eccentric wheel, and a heat conduction cylinder arranged in the telescopic spring retracts into the heat exchange plate to exchange heat with the heat dissipation pipe; and meanwhile, a piston arranged in a heat exchange plate can exhaust hot air in a heat conduction cylinder after heat exchange into an exhaust cabin and exhaust the hot air through a heat dissipation pipe, and the situation that the service life and the collection effect of the air particulate matter collector are affected due to the fact that internal elements cannot dissipate heat in time is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of particle samplers, in particular to a high negative pressure ambient air particle sampler. Background Art

[0002] Air particle samplers are instruments used to capture particulate matter and various gas component samples in the atmosphere. When a certain volume of air passes through a filter membrane of known mass at a constant speed, the particles suspended in the air are retained on the filter membrane. The mass concentration of total suspended particulate matter in the air is determined based on the mass increased by the filter membrane and the volume of air passing through the filter membrane. It can also be used to determine components such as metals, inorganic salts and organic pollutants in the particulate matter. Existing particulate samplers may be affected by the ambient temperature during use, and the heat dissipated by the internal components during operation causes a large temperature difference between the top sampling filter membrane and the environment. There is a problem that the internal components of the machine cannot be cooled, which may affect the life of the machine and cause deviations in the collected samples. Utility Model Content

[0003] In view of the deficiencies in the prior art, the utility model provides a high negative pressure ambient air particulate sampler, which solves the problem that the particulate sampler may be affected by the ambient temperature during use, and the heat emitted by the internal components during operation causes a large temperature difference between the top sampling filter membrane and the environment, resulting in the internal components of the machine not being able to dissipate heat, which may affect the life of the machine and cause sample collection deviation.

[0004] To achieve the above purpose, the utility model is implemented by the following technical solutions: a high negative pressure ambient air particulate sampler. It includes a sampling component, a heat dissipation component is arranged inside the sampling component, the heat dissipation component includes a circulation pipe, the middle part of the circulation pipe is fixedly connected to a pressurized cabin, the bottom of the circulation pipe is movably connected to an impeller, the outer part of the impeller is sleeved with a transmission belt, and cooling fans are arranged at both ends of the transmission belt, an eccentric wheel is fixedly connected to the inside of the pressurized cabin, the eccentric wheel is concave inwardly around and is slidably connected to a heat exchange plate inside, the top of the heat exchange plate is fixedly connected to a telescopic spring, the inside of the telescopic spring is movably connected to a heat conduction tube, and the top of the heat conduction tube is fixedly connected to an exhaust cabin.

[0005] Preferably, the sampling component includes an air suction pipe, the bottom of the air suction pipe is fixedly connected to the sampler body, the top of the air suction pipe is fixedly connected to the air inlet chamber, the top of the air inlet chamber is fixedly connected to the air inlet pipe, the connection between the air inlet chamber and the air suction pipe is fixedly connected to the induced exhaust fan, and the connection between the air inlet chamber and the air inlet pipe is movably connected to the sampling filter membrane.

[0006] Preferably, the air suction pipe passes through the top of the circulation pipe.

[0007] Preferably, water outlets are provided at both ends of the pressurized cabin, and a circulation pipe is fixedly connected inside the water outlets.

[0008] Preferably, a heat dissipation pipe is fixedly connected to the surface of the pressurized cabin, and the heat dissipation pipe is communicated with the exhaust cabin.

[0009] Preferably, the gear arranged at the top of the impeller is movably connected in the bottom inner cavity of the circulation pipe.

[0010] Preferably, the bottom of the sampling component is provided with holes and is inlaid with a cooling fan.

[0011] Preferably, the eccentric wheel is fixedly connected at a position deviating from the center of the circle inside the pressurized cabin.

[0012] Preferably, a piston is arranged inside the heat exchange plate and a heat-conducting cylinder is sleeved outside the piston.

[0013] The utility model provides a high negative pressure ambient air particulate sampler. Compared with the prior art, it has the following beneficial effects:

[0014] 1. A high negative pressure environment air particle sampler, which rotates eccentrically inside a pressurized cabin through an eccentric wheel to squeeze the coolant inside the pressurized cabin into the inside of a circulation pipe for circulation. After the heat exchange plate contacts the coolant, it shrinks into the inside of the eccentric wheel through the eccentric rotation of the eccentric wheel. The heat-conducting tube arranged inside the telescopic spring shrinks into the inside of the heat exchange plate to exchange heat with the heat dissipation pipe. At the same time, the piston arranged inside the heat exchange plate can discharge the hot air inside the heat-conducting tube after heat exchange into the inside of the exhaust cabin and discharge it through the heat dissipation pipe, thereby avoiding the impact on the service life and collection effect of the air particle collector due to the failure of internal components to dissipate heat in time.

[0015] 2. A high negative pressure ambient air particulate sampler, which rotates through the impeller arranged inside the circulation pipe. The kinetic energy brought by the rapid squeezing of the coolant inside the circulation pipe by the eccentric wheel during rotation drives the impeller to rotate. The cooling fans arranged at both ends of the transmission belt are driven by the transmission belt to discharge the heat generated by the internal components of the sampling assembly to the outside of the machine, thereby reducing the internal temperature of the machine. It can produce a linkage effect with the circulation pipe to make the heat dissipation effect of the machine better. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0017] Figure 2 This is a schematic diagram of the local structure of the sampling component of the utility model;

[0018] Figure 3 This is a schematic diagram of the structure of the sampling component of the utility model;

[0019] Figure 4This is a schematic diagram of the structure of the heat dissipation component of the utility model;

[0020] Figure 5 This is a detailed diagram of the heat dissipation component of the utility model.

[0021] In the figure: 1. Sampling component; 2. Heat dissipation component; 11. Air suction pipe; 12. Sampler body; 13. Air inlet chamber; 130. Sampling filter membrane; 131. Exhaust fan; 14. Air inlet pipe; 21. Circulation pipe; 210. Water outlet; 211. Heat dissipation pipe; 22. Pressurization cabin; 220. Eccentric wheel; 221. Heat exchange plate; 222. Telescopic spring; 223. Exhaust cabin; 224. Heat conduction tube; 23. Heat dissipation fan; 24. Transmission belt; 25. Impeller. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] See also Figure 1-5 The utility model provides a technical solution: a high negative pressure ambient air particulate sampler. It includes a sampling component 1, a heat dissipation component 2 is arranged inside the sampling component 1, the heat dissipation component 2 includes a circulation pipe 21, a pressurization cabin 22 is fixedly connected to the middle of the circulation pipe 21, an impeller 25 is movably connected to the bottom of the circulation pipe 21, a transmission belt 24 is sleeved on the outside of the impeller 25, and heat dissipation fans 23 are arranged at both ends of the transmission belt 24. The heat dissipation fan 23 can be driven by the transmission belt 24 to rotate and discharge the heat set inside the sampling component 1 to the outside of the machine, an eccentric wheel 220 is fixedly connected to the inside of the pressurization cabin 22, and a motor is arranged inside the pressurization cabin 22 to drive the eccentric wheel 220 to rotate eccentrically, and the eccentric wheel 220 is concave inwardly on all sides and slides inside. A heat exchange plate 221 is connected, a piston is arranged inside the heat exchange plate 221 and a heat-conducting tube 224 is sleeved on the outside of the piston. After the heat-conducting tube 224 absorbs the heat in the coolant, the heat exchange plate 221 can squeeze the hot air inside the heat-conducting tube 224 into the exhaust chamber 223 and discharge it outward by the piston arranged inside the heat exchange plate 221. A telescopic spring 222 is fixedly connected to the top of the heat exchange plate 221. The telescopic spring 222 is used to restore the heat exchange plate 221 that has shrunk after being squeezed to its original state when the eccentric wheel 220 rotates eccentrically when there is no force. The interior of the telescopic spring 222 is movably connected to the heat-conducting tube 224, and the top of the heat-conducting tube 224 is fixedly connected to the exhaust chamber 223.

[0024] See also Figure 1-3The sampling component 1 includes an air suction pipe 11, a sampler body 12 is fixedly connected to the bottom of the air suction pipe 11, an exhaust hole is arranged at the bottom of the sampler body 12, the sampler body 12 can control the top induced draft fan 131 to absorb air inward to collect particulate matter in the air, an air inlet chamber 13 is fixedly connected to the top of the air suction pipe 11, an air inlet pipe 14 is fixedly connected to the top of the air inlet chamber 13, the induced draft fan 131 is fixedly connected to the connection between the air inlet chamber 13 and the air suction pipe 11, a sampling filter membrane 130 is movably connected to the connection between the air inlet chamber 13 and the air inlet pipe 14, the sampling filter membrane 130 filters the particulate matter contained in the air and makes the particulate matter stick to the surface, and the ambient air can be analyzed later through the particulate matter situation on the surface of the sampling filter membrane 130.

[0025] See also Figure 1-5 , the suction pipe 11 passes through the top of the circulation pipe 21. Water outlets 210 are provided at both ends of the pressurized cabin 22, and the circulation pipe 21 is fixedly connected inside the water outlet 210. A heat dissipation pipe 211 is fixedly connected to the surface of the pressurized cabin 22, and the heat dissipation pipe 211 is interconnected with the exhaust cabin 223. The gear arranged on the top of the impeller 25 is movably connected in the bottom inner cavity of the circulation pipe 21. The bottom of the sampling component 1 is provided with holes and is inlaid with a cooling fan 23. The eccentric wheel 220 is fixedly connected to a position deviated from the center of the circle inside the pressurized cabin 22.

[0026] When in use, first, the sampler body 12 controls the induced draft fan 131 at the connection between the suction pipe 11 and the air inlet chamber 13 to absorb the air in the environment. The absorbed air is filtered by the sampling filter membrane 130 so that the particles adhere to the surface of the sampling filter membrane 130. When the machine needs to dissipate heat, the eccentric wheel 220 inside the pressurized cabin 22 rotates eccentrically to compress the internal coolant toward the water outlet 210. Due to the telescopic effect of the telescopic spring 222, the space between the heat exchange plate 221 near the water outlet 210 becomes smaller when the eccentric wheel 220 rotates, so that the internal coolant is accelerated to enter the circulation pipe 2 1, and after the heat exchange plate 221 absorbs the heat in the circulated coolant, the eccentric wheel 220 rotates to make the heat-conducting tube 224 enter the heat exchange plate 221 to exchange heat with the heat exchange plate 221, and at the same time, the piston arranged inside the heat exchange plate 221 squeezes the hot air from the inside of the heat-conducting tube 224 into the inside of the exhaust cabin 223 and is discharged outwardly. As the coolant accelerates to enter the inside of the circulation pipe 21, it drives the impeller 25 inside the circulation pipe 21 to rotate, so that when the impeller 25 rotates, the transmission belt 24 drives the cooling fan 23 to rotate to discharge the hot air generated by the internal components of the sampling assembly 1 to the outside of the machine.

[0027] In this embodiment, a high negative pressure ambient air particulate sampler is provided. Among the above components, its structural features and working principles all adopt the existing technology and will not be described in detail here.

[0028] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0029] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A high negative pressure ambient air particulate sampler, comprising a sampling assembly (1), characterized in that: A heat dissipation component (2) is arranged inside the sampling component (1); The heat dissipation component (2) comprises a circulation pipe (21), the middle part of the circulation pipe (21) is fixedly connected to a pressurized cabin (22), the bottom of the circulation pipe (21) is movably connected to an impeller (25), the outer part of the impeller (25) is sleeved with a transmission belt (24), and cooling fans (23) are arranged at both ends of the transmission belt (24), the interior of the pressurized cabin (22) is fixedly connected to an eccentric wheel (220), the periphery of the eccentric wheel (220) is inwardly concave and the interior is slidably connected to a heat exchange plate (221), the top of the heat exchange plate (221) is fixedly connected to a telescopic spring (222), the interior of the telescopic spring (222) is movably connected to a heat conduction tube (224), the interior of the heat conduction tube (224) is hollow, and the top of the heat conduction tube (224) is fixedly connected to an exhaust cabin (223); The sampling assembly (1) comprises an air suction pipe (11), the bottom of the air suction pipe (11) is fixedly connected to a sampler body (12), the top of the air suction pipe (11) is fixedly connected to an air inlet chamber (13), the top of the air inlet chamber (13) is fixedly connected to an air inlet pipe (14), the connection between the air inlet chamber (13) and the air suction pipe (11) is fixedly connected to an exhaust fan (131), and the connection between the air inlet chamber (13) and the air inlet pipe (14) is movably connected to a sampling filter membrane (130).

2. A high negative pressure ambient air particulate sampler according to claim 1, characterized in that: The air suction pipe (11) passes through the top of the circulation pipe (21).

3. The high negative pressure ambient air particulate sampler according to claim 1, characterized in that: Water outlets (210) are provided at both ends of the pressurized cabin (22), and a circulation pipe (21) is fixedly connected inside the water outlet (210).

4. The high negative pressure ambient air particulate sampler according to claim 3, characterized in that: A heat dissipation pipe (211) is fixedly connected to the surface of the pressurized cabin (22), and the heat dissipation pipe (211) is in communication with the exhaust cabin (223).

5. The high negative pressure ambient air particulate sampler according to claim 1, characterized in that: The gear arranged on the top of the impeller (25) is movably connected to the bottom inner cavity of the circulation pipe (21).

6. The high negative pressure ambient air particulate sampler according to claim 1, characterized in that: The bottom of the sampling component (1) is provided with a hole and is inlaid with a cooling fan (23).

7. The high negative pressure ambient air particulate sampler according to claim 1, characterized in that: The eccentric wheel (220) is fixedly connected at a position deviating from the center of the circle inside the pressurized cabin (22).

8. The high negative pressure ambient air particulate sampler according to claim 1, characterized in that: A piston is arranged inside the heat exchange plate (221), and a heat-conducting cylinder (224) is sleeved on the outside of the piston.

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