Aerosol particle concentration detection device

Abstract

The utility model discloses an aerosol particle concentration detection device which comprises a concentration detection device body, a sucking pump, a collecting pipe and a collecting hopper, the input end of the sucking pump is communicated with the collecting pipe, the other end of the collecting pipe is communicated with the collecting hopper, the output end of the sucking pump is communicated with a thick pipe, and the thick pipe is communicated with the collecting hopper. And one end of the thick pipe is communicated with a thin pipe. When the concentration of indoor aerosol particles needs to be detected, the thin pipe is plugged through the plugging adjusting assembly, the discharge groove is communicated with the thick pipe, the air extracting pump is started for air extraction, and the aerosol particles remaining in a pipeline originally existing in the collecting pipe and the air extracting pump enter the discharge groove through the through groove, so that the concentration of the aerosol particles in the collecting pipe and the air extracting pump is detected. After the sucking pump operates for a period of time, the through groove is plugged by the plugging adjusting assembly, and the plugging block leaves the thin tube, so that indoor aerosol particles can be sucked into the concentration detection device body for detection.

Description

Technical Field

[0001] This utility model relates to the field of aerosol particle concentration detection technology, and in particular to an aerosol particle concentration detection device. Background Technology

[0002] Aerosol particle concentration detection devices play a crucial role in environmental monitoring, air purification, industrial hygiene, and scientific research. The core of these devices lies in their ability to accurately measure the quantity and size distribution of suspended particulate matter in the air, providing key data for assessing air quality, controlling pollution sources, and studying the physicochemical properties of aerosols. With the development of nanotechnology and photoelectric sensing technology, modern aerosol particle concentration detection devices can now efficiently detect particles down to the nanometer scale. They typically employ the principle of laser scattering, using a laser beam to illuminate aerosol particles and determining the number and size of particles by measuring the intensity and angle of the scattered light. Furthermore, some advanced devices incorporate aerodynamic particle size distribution (APD) technology, enabling more precise differentiation of particles of different sizes and providing users with more detailed information on aerosol characteristics.

[0003] Patent document CN221826700U discloses an aerosol concentration detection device, including an aerosol collection container, a suction component, and a detection component. The aerosol collection container has a connected receiving cavity and a first opening. Since the suction component is connected to the aerosol collection container, the aerosol can be drawn into the receiving cavity under the negative pressure generated by the suction component. This can simulate the actual suction process of the user, making the amount of collected aerosol close to the amount of aerosol generated during the actual suction process. On the one hand, it can improve the detection efficiency of mass production processes; on the other hand, it can also help improve the accuracy of aerosol concentration detection. Furthermore, since the detection component has a transmitting end and a receiving end, the transmitting end is used to emit a first light signal toward the receiving cavity, and the receiving end is used to receive a second light signal formed after the first light signal passes through the aerosol. The detection component obtains the aerosol concentration value based on the difference between the emitted and received light signals, which can further improve the accuracy of aerosol concentration detection.

[0004] In the prior art of the aforementioned patent, during the aerosol collection process, an air pump is used to absorb aerosols from the environment into the detection device for detection. However, residual aerosols from the previous stage of gas concentration detection will remain in the air pump pipes, including the collection pipe. If this is not treated, the concentration of aerosols drawn into the device will differ significantly from the concentration in the environment, resulting in inaccurate detection. Utility Model Content

[0005] Purpose of the utility model: The purpose of this utility model is to provide an aerosol particle concentration detection device to solve the above-mentioned shortcomings in the prior art.

[0006] Technical Solution: An aerosol particle concentration detection device includes a concentration detection device body, a vacuum pump, a collection tube, and a collection hopper. The input end of the vacuum pump is connected to the collection tube, and the other end of the collection tube is connected to the collection hopper. A coarse tube is connected to the output end of the vacuum pump, and a fine tube is connected to one end of the coarse tube. The other end of the fine tube is connected to the concentration detection device body. A discharge groove is provided on the side wall of the coarse tube, and through grooves are opened at the top and bottom ends of the coarse tube, which are connected to the discharge groove. A sealing and adjusting component is provided between the coarse tube and the fine tube.

[0007] As a further description of the above technical solution: a sealing and adjusting component is provided between the thick tube and the thin tube.

[0008] As a further description of the above technical solution: the plugging adjustment assembly includes a plugging block that is slidably installed inside the thin tube, the plugging block being tightly attached to the inner wall of the thin tube.

[0009] As a further description of the above technical solution: sealing plates are slidably installed at the top and bottom of the inner wall of the thick pipe, the two sealing plates are fixedly connected to the sealing block, and the two sealing plates are arranged below the through groove.

[0010] As a further description of the above technical solution: a fixing plate is fixedly installed inside the thin tube, and a ventilation groove is formed on the fixing plate.

[0011] As a further description of the above technical solution: an electric push rod is fixedly installed on the fixed plate, and the output end of the electric push rod is connected to the sealing block in a transmission manner.

[0012] As a further description of the above technical solution: a sealing ring is fixedly connected between the two sections of the discharge groove and the thick pipe.

[0013] As a further description of the above technical solution: an exhaust valve is connected to the top of the discharge trough.

[0014] Beneficial effects: When it is necessary to detect the concentration of aerosol particles indoors, first seal the thin tube with the sealing adjustment component, connect the discharge slot and the thick tube, turn on the air pump to draw air, and the aerosol particles that were originally in the collection tube and the pipe inside the air pump will enter the discharge slot through the through slot. After the air pump has been running for a period of time, seal the through slot with the sealing adjustment component. The sealing block leaves the thin tube, which can realize the extraction of aerosol particles indoors into the concentration detection device for detection. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall three-dimensional structure of the aerosol particle concentration detection device proposed in this utility model.

[0016] Figure 2 This is a three-dimensional cross-sectional structural diagram of the present invention;

[0017] Figure 3 This is a three-dimensional cross-sectional view of the structure after the through-slot is sealed in this utility model;

[0018] Figure 4 This is a cross-sectional structural diagram of the present invention.

[0019] Legend:

[0020] 1. Concentration detection device body; 2. Thin tube; 3. Thick tube; 4. Discharge trough; 5. Sealing ring; 6. Exhaust valve; 7. Air pump; 8. Collection tube; 9. Collection hopper; 10. Fixing plate; 11. Ventilation trough; 12. Electric push rod; 13. Sealing block; 14. Sealing plate; 15. Through trough. Detailed Implementation

[0021] To make the technical solution of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0022] Reference Figure 1-4 An aerosol particle concentration detection device includes a concentration detection device body 1, a vacuum pump 7, a collection tube 8, and a collection hopper 9. The input end of the vacuum pump 7 is connected to the collection tube 8, and the other end of the collection tube 8 is connected to the collection hopper 9. A coarse tube 3 is connected to the output end of the vacuum pump 7. A fine tube 2 is connected to one end of the coarse tube 3. The other end of the fine tube 2 is connected to the concentration detection device body 1. A discharge groove 4 is provided on the side wall of the coarse tube 3. A through groove 15 is opened at both the top and bottom ends of the coarse tube 3. The through groove 15 is connected to the discharge groove 4. A sealing and adjusting component is provided between the coarse tube 3 and the fine tube 2.

[0023] As a preferred technical solution in this embodiment, a blocking adjustment component is provided between the coarse tube 3 and the thin tube 2. When it is necessary to detect the concentration of aerosol particles in the room, the thin tube 2 is first blocked by the blocking adjustment component, the discharge slot 4 is connected to the coarse tube 3, and the air pump 7 is turned on to pump air. The aerosol particles that were originally in the pipes inside the collection tube 8 and the air pump 7 enter the discharge slot 4 through the through slot 15. After the air pump 7 has been running for a period of time, the through slot 15 is blocked by the blocking adjustment component. The blocking block 13 leaves the thin tube 2, which can realize the extraction of aerosol particles in the room into the concentration detection device body 1 for detection.

[0024] As a preferred technical solution of this embodiment, the sealing adjustment component includes a sealing block 13 that is slidably installed inside the thin tube 2, and the sealing block 13 is in close contact with the inner wall of the thin tube 2.

[0025] As a preferred technical solution in this embodiment, sealing plates 14 are slidably installed at the top and bottom of the inner wall of the thick tube 3. The two sealing plates 14 are fixedly connected to the sealing block 13, and the two sealing plates 14 are located below the through groove 15. The sealing block 13 seals the inside of the thin tube 2, but the sealing plates 14 do not seal the through groove 15, so aerosol particles can be sucked into the inside of the discharge groove 4. This realizes the collection of aerosol particles that were originally in the pipes inside the collection tube 8 and the suction pump 7. When the sealing block 13 moves towards the thick tube 3, the sealing plates 14 seal the two through grooves 15, and the aerosol particles that are continuously drawn in can enter the concentration detection device body 1.

[0026] As a preferred technical solution of this embodiment, a fixing plate 10 is fixedly installed inside the thin tube 2, and a ventilation groove 11 is provided on the fixing plate 10.

[0027] As a preferred technical solution of this embodiment, an electric push rod 12 is fixedly installed on the fixing plate 10, and the output end of the electric push rod 12 is connected to the blocking block 13 in a transmission manner; the electric push rod 12 can push and pull the blocking block 13, the fixing plate 10 can fix the electric push rod 12, and the ventilation slot 11 enables aerosol particles to flow normally into the interior of the concentration detection device body 1.

[0028] As a preferred technical solution in this embodiment, a sealing ring 5 is fixedly connected between the two sections of the discharge groove 4 and the thick pipe 3; the function of the sealing ring 5 is to ensure good sealing between the discharge groove 4 and the thick pipe 3 and to prevent air leakage.

[0029] As a preferred technical solution in this embodiment, an exhaust valve 6 is connected to the top of the discharge tank 4; the exhaust valve 6 is used to discharge the gas inside the discharge tank 4 after all the testing processes are completed.

[0030] The embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of this utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. An aerosol particle concentration detection device, comprising a concentration detection device body (1), a vacuum pump (7), a collection tube (8), and a collection hopper (9), wherein the input end of the vacuum pump (7) is connected to the collection tube (8), characterized in that, The other end of the collection tube (8) is connected to the collection hopper (9). The output end of the air pump (7) is connected to a thick tube (3). One end of the thick tube (3) is connected to a thin tube (2). The other end of the thin tube (2) is connected to the concentration detection device body (1). The side wall of the thick tube (3) is provided with a discharge groove (4). The top and bottom ends of the thick tube (3) are provided with through grooves (15). The through grooves (15) are connected to the discharge grooves (4).

2. The aerosol particle concentration detection device according to claim 1, characterized in that, A sealing and adjusting assembly is provided between the thick tube (3) and the thin tube (2).

3. The aerosol particle concentration detection device according to claim 2, characterized in that, The plugging adjustment assembly includes a plugging block (13) that is slidably installed inside the thin tube (2) and is in close contact with the inner wall of the thin tube (2).

4. The aerosol particle concentration detection device according to claim 1, characterized in that, The top and bottom of the inner wall of the thick pipe (3) are slidably installed with sealing pieces (14), and the two sealing pieces (14) are fixedly connected to the sealing block (13). The two sealing pieces (14) are located below the through groove (15).

5. The aerosol particle concentration detection device according to claim 1, characterized in that, A fixing plate (10) is fixedly installed inside the thin tube (2), and a ventilation groove (11) is provided on the fixing plate (10).

6. The aerosol particle concentration detection device according to claim 5, characterized in that, An electric push rod (12) is fixedly installed on the fixed plate (10), and the output end of the electric push rod (12) is connected to the sealing block (13) in a transmission manner.

7. The aerosol particle concentration detection device according to claim 1, characterized in that, A sealing ring (5) is fixedly connected between the two sections of the discharge groove (4) and the thick pipe (3).

8. The aerosol particle concentration detection device according to claim 1, characterized in that, An exhaust valve (6) is connected to the top of the discharge trough (4).

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