A ring-shaped dust sensor calibration device

Abstract

The utility model discloses a kind of annular dust sensor verification calibration devices, including multiple wind tunnel main bodies, multiple wind tunnel main bodies are equipped with air pipe between, the outside of the air pipe is connected with connector, and the connector is connected with air blower;The inside one side of the air pipe is equipped with inner inclined surface cylinder, the one side of the inner inclined surface cylinder is equipped with inner cylinder, the outer side of the inner cylinder is evenly equipped with multiple tab, and multiple tab is equipped with drainage groove between, the air blower is installed in this device, the inside of air pipe is only equipped with inner inclined surface cylinder and inner cylinder, so that the inner wall of air pipe can only thicken a part compared with normal condition, compared with the inside of traditional fan installation in pipeline, a large amount of internal space is saved, the circulation of dust can be more efficient and stable, avoid the situation that dust circulation is limited due to the blockage of internal fan, also avoid the situation that fan is damaged by dust.

Description

Technical Field

[0001] This utility model relates to the field of dust sensor calibration technology, specifically to a ring-shaped dust sensor calibration and verification device. Background Technology

[0002] In existing technologies, dust sensor calibration devices are test equipment used to simulate dust airflow environments. Most existing dust sensor calibration devices are of the straight-through type, meaning that dust is generated at one end of the device and collected at the other. This type of equipment has a low degree of automation and cannot perform cyclic testing.

[0003] Chinese patent CN202321070981.8 discloses a dust sensor calibration device, wherein a control cabinet installed on the test wind tunnel and a fan installed inside the test wind tunnel are used to create a circulating flow of dust-containing air in the test wind tunnel, thereby achieving the purpose of circulating dust detection and improving the automation of the detection equipment.

[0004] The fan is installed inside the duct, which means that the dust will be constantly obstructed by the fan during the dust circulation process, making it impossible for the dust to circulate stably and efficiently. At the same time, the constant impact of the dust on the fan will also damage the fan, and after a long time, the fan will become unusable.

[0005] To address this, a calibration and verification device for an annular dust sensor is proposed. Summary of the Invention

[0006] The purpose of this invention is to provide a calibration and verification device for an annular dust sensor to solve the problems mentioned in the background art.

[0007] To achieve the above objectives, this utility model provides the following technical solution: a ring-shaped dust sensor calibration device, comprising multiple wind tunnel bodies, with air ducts installed between the multiple wind tunnel bodies, and a connector connected to the outside of the air duct, with a blower connected to the connector;

[0008] An inner inclined cylinder is installed on one side of the duct, and an inner cylinder is installed on one side of the inner inclined cylinder. Multiple protruding plates are evenly installed on the outer side of the inner cylinder, and drainage grooves are provided between the multiple protruding plates.

[0009] Preferably, a gap is provided between the inner cylinder and the air duct, and the plurality of protruding plates and drainage grooves are all inclined.

[0010] Preferably, a dust sampling box for installing dust sensors is connected between the multiple wind tunnel bodies, and the dust sampling box is equipped with a door.

[0011] Preferably, an air compressor is connected to one of the wind tunnel bodies, and a control console for controlling the operation of the device is provided on one side of the wind tunnel body.

[0012] Preferably, the multiple wind tunnel bodies, air ducts and dust sampling boxes are interconnected in a ring.

[0013] Preferably, the wind tunnel body is also equipped with a wind speed sensor, a temperature sensor, a humidity sensor, an atmospheric pressure sensor, a wind valve, and a dust generator.

[0014] Preferably, the dust generator adopts a gear-disc structure and is controlled by a variable frequency motor.

[0015] Compared with the prior art, the beneficial effects of this utility model are as follows: This device installs the blower inside the duct, and only the inner inclined cylinder and the inner cylinder are installed inside the duct. This allows the inner wall of the duct to be thickened only slightly compared to the normal situation. Compared with the traditional method of installing the blower inside the duct, it saves a lot of internal space, making the dust circulation more efficient and stable. It avoids the situation where dust circulation is restricted due to the obstruction of the internal blower, and also avoids the situation where the blower is damaged by dust. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of this utility model;

[0017] Figure 2 This is a schematic diagram of the structure of the air duct of this utility model;

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

[0019] Figure 4 This is a schematic diagram of the structure of this utility model.

[0020] In the diagram: 1. Wind tunnel main body; 2. Dust sampling box; 3. Box door; 4. Control console; 5. Air duct; 6. Blower; 7. Connector; 8. Inner inclined cylinder; 9. Inner cylinder; 10. Gap; 11. Drainage channel; 12. Convex plate; 13. Air compressor; 14. Dust generator. Detailed Implementation

[0021] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0022] Please see Figure 1-4This utility model provides a technical solution: a ring-shaped dust sensor calibration device, including multiple wind tunnel bodies 1, each wind tunnel body 1 including straight pipes and arc pipes, which are connected to each other by flanges, and form an arc-shaped circulating wind tunnel with a dust sampling box 2 and a wind duct 5. Wind ducts 5 are installed between the multiple wind tunnel bodies 1, and connectors 7 are connected to the outside of the wind ducts 5. A blower 6 is connected to the connector 7. A valve body is installed on the side of the wind tunnel body 1 away from the air outlet of the blower 6. The valve body adopts a one-way valve for gas discharge only. The blower 6 blows air into the wind duct 5 through the connector 7, so that the air flow drives the dust inside to circulate and move.

[0023] An inner inclined cylinder 8 is installed on one side of the duct 5. The inner inclined cylinder 8 can effectively prevent dust from being blocked by the protrusions of the connecting surface, so that the dust can be circulated efficiently. An inner cylinder 9 is installed on one side of the inner inclined cylinder 8. Multiple protruding plates 12 are evenly installed on the outer side of the inner cylinder 9, and a drainage groove 11 is provided between the multiple protruding plates 12.

[0024] like Figure 3 and Figure 4 As shown: A gap 10 is provided between the inner cylinder 9 and the air duct 5, and multiple protruding plates 12 and flow channels 11 are all inclined. With the above arrangement, the gap 10 can make it easier for the airflow to enter the interior of each flow channel 11, and then the high-speed air is discharged through the inclined flow channels 11, which drives the dust to circulate.

[0025] like Figure 1 As shown: Multiple wind tunnel bodies 1 are connected by dust sampling boxes 2 for installing dust sensors. Each dust sampling box 2 has a door 3. With this setup, opening the door 3 allows for the calibration, verification, and error detection and analysis of dust measurement instruments such as dust concentration meters, dust concentration sensors, and direct-reading dust concentration meters. The door 3 can also be made of acrylic material for easy observation.

[0026] like Figure 1 As shown: An air compressor 13 is connected to a wind tunnel body 1. A control console 4 for controlling the operation of this device is provided on one side of the wind tunnel body 1. With the above settings, the control console 4 can control the operation of various components in this device. The air compressor 13 is used as a dust collector. After sampling is completed, the dust can be discharged through the air compressor 13.

[0027] like Figure 1 As shown: Multiple wind tunnel main bodies 1, air ducts 5 and dust sampling boxes 2 are interconnected in a ring; through the above settings, the ring-shaped circulation structure can realize the circulation of dust-laden airflow in the closed wind tunnel, reducing environmental pollution and saving dust consumption.

[0028] like Figure 1As shown: The wind tunnel body 1 is also equipped with a wind speed sensor, a temperature sensor, a humidity sensor, an atmospheric pressure sensor, an air valve, and a dust generator 14. The dust generator 14 adopts a gear-disc structure and is controlled by a variable frequency motor. Through the above settings, the dust generator 14 can uniformly and stably generate dust into the interior of the wind tunnel body 1 during testing. At the same time, various sensors can be used to detect various data during measurement, facilitating subsequent work.

[0029] Working principle: First, the instrument to be tested is installed inside the dust sampling box 2. Then, the blower 6 is started. The blower 6 discharges air at high speed into the gap 10 between the air duct 5 and the inner cylinder 9, so that the air quickly fills the gap 10. Then, the high-speed air can be quickly discharged into the interior of the wind tunnel body 1 through the gap 10 and the guide groove 11. The blower of this device is located on the outside of the air duct 5. The inner side of the wind tunnel body 1 is only thicker than that of a normal wind tunnel duct. This design allows the dust to circulate more smoothly inside the wind tunnel body 1, avoiding the situation where the dust circulation is unstable or the blower is damaged due to the obstruction of the blower. Then, the dust is stably discharged into the interior of the wind tunnel body 1 through the dust generator 14. The high-speed airflow drives the dust to circulate inside the wind tunnel body 1.

[0030] When the dust passes through the instrument inside the dust sampling box 2, the instrument can complete the test. After the test is completed and the sampling is finished, the dust can be discharged by the air compressor 13.

[0031] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A calibration and verification device for an annular dust sensor, comprising multiple wind tunnel bodies (1), characterized in that: A duct (5) is installed between multiple wind tunnel bodies (1), and a connector (7) is connected to the outside of the duct (5), and a blower (6) is connected to the connector (7); An inner inclined cylinder (8) is installed on one side of the duct (5), and an inner cylinder (9) is installed on one side of the inner inclined cylinder (8). Multiple protruding plates (12) are evenly installed on the outer side of the inner cylinder (9), and a drainage groove (11) is provided between the multiple protruding plates (12).

2. The annular dust sensor calibration and verification device according to claim 1, characterized in that: A gap (10) is provided between the inner cylinder (9) and the air duct (5), and the plurality of protruding plates (12) and the drainage grooves (11) are all inclined.

3. The annular dust sensor calibration and verification device according to claim 1, characterized in that: The multiple wind tunnel bodies (1) are also connected by a dust sampling box (2) for installing dust sensors, and the dust sampling box (2) is equipped with a box door (3).

4. The annular dust sensor calibration and verification device according to claim 1, characterized in that: An air compressor (13) is connected to one of the wind tunnel bodies (1), and a control console (4) for controlling the operation of the device is provided on one side of the wind tunnel body (1).

5. The annular dust sensor calibration and verification device according to claim 3, characterized in that: The multiple wind tunnel bodies (1), air ducts (5) and dust sampling boxes (2) are interconnected in a ring.

6. The annular dust sensor calibration and verification device according to claim 1, characterized in that: The wind tunnel body (1) is also equipped with a wind speed sensor, a temperature sensor, a humidity sensor, an atmospheric pressure sensor, a wind valve, and a dust generator (14).

7. The annular dust sensor calibration and verification device according to claim 6, characterized in that: The dust generator (14) adopts a gear disk structure and is controlled by a variable frequency motor.

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