Dust exhaust gas collecting device

Abstract

The utility model discloses a kind of dust waste gas collecting devices, it is related to waste gas treatment technical field, including collection tank, tank cover and helical guide vane, the bottom of the collection tank is equipped with support, the top of the collection tank is equipped with tank cover, the center shaft is provided in the collection tank, the bottom end of center shaft is connected with the driving assembly installed in the tank bottom of collection tank, the center shaft is equipped with helical guide vane, the lower half of the center shaft is welded with lower connecting rod, the free end of lower connecting rod is welded with lower scraper, the helical rising air current formed by helical guide vane, effectively improve the suspended dispersion of dust, combined with the periodic scraping action of dynamic scraper, can peel off the dust adhered to inner wall in time and take out along with airflow, significantly reduce the settling rate of dust on tank wall, solve the detection error problem caused by dust accumulation of traditional collection tank, make real-time dust concentration detection data more accurate and reliable.

Description

Technical Field

[0001] This utility model relates to the field of waste gas treatment technology, specifically a dust waste gas collection device. Background Technology

[0002] Dust emissions are one of the main pollutants generated during industrial production processes. Their sources are widespread (such as mining, metallurgical smelting, chemical reactions, and building material grinding), and they contain a large number of solid particulate matter of varying sizes. If these emissions are directly released without effective treatment, they will not only exacerbate particulate pollution (leading to smog, acid rain, and other environmental problems), but will also enter the human body through the respiratory tract, causing respiratory diseases and even increasing the risk of cancer, seriously threatening the ecological environment and public health. Therefore, environmental regulations in various countries mandate that companies capture, purify, and test dust emissions to ensure they meet standards before being released. Currently, the industrial sector commonly adopts a process flow of "exhaust gas treatment device + dust collection tank + online detection": after most of the particulate matter is removed by pretreatment equipment such as spray towers and bag filters, the exhaust gas enters the collection tank for temporary storage, and finally the emission concentration is verified by the detection unit to see if it meets the standards. However, traditional collection tanks are mostly static structures. After collection, the dust in the exhaust gas will settle and a large amount of it will adhere to the inner wall of the collection tank, affecting the detection of dust content in the exhaust gas, resulting in distorted detection results. This leads to the unqualified exhaust gas being mistakenly discharged into the air, causing air pollution. Utility Model Content

[0003] The purpose of this invention is to provide a dust and exhaust gas collection device to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution: A dust and exhaust gas collection device includes a collection tank, a tank cover, and spiral guide vanes. A support is installed at the bottom of the collection tank, and a tank cover is installed at the top. A central shaft is disposed inside the collection tank, with its bottom end connected to a drive assembly installed at the bottom of the tank. Spiral guide vanes are mounted on the central shaft. A lower connecting rod is welded to the lower half of the central shaft, and a lower scraper is welded to the free end of the lower connecting rod. An upper connecting rod is welded to the upper half of the central shaft, and an upper scraper is welded to the free end of the upper connecting rod. A primary exhaust pipe is installed on the tank cover, and an electric three-way valve is installed on the primary exhaust pipe. A secondary exhaust pipe and a gas return pipe are respectively installed on the other two ports of the electric three-way valve. A first suction pump and a second suction pump are respectively installed on the secondary exhaust pipe and the gas return pipe. A dust detection unit is installed on the primary exhaust pipe.

[0005] As a further embodiment of this utility model: the drive assembly includes a motor mounting plate, a motor, a drive pulley, a driven pulley, and a belt. The motor mounting plate is welded to the support, and the drive pulley is mounted on the motor mounting plate. The drive pulley and the driven pulley mounted at the bottom of the central shaft are connected by belt drive.

[0006] As a further improvement of this utility model, an observation window is installed on the collection tank.

[0007] As a further improvement of this utility model, an air inlet is provided on one side of the collection tank.

[0008] As a further improvement of this utility model, the gas return pipe is connected to the air inlet of the dust exhaust gas treatment device.

[0009] As a further improvement of this utility model: the lower scraper is an L-shaped plate, and one end of the lower scraper is welded and fixed to the central shaft.

[0010] Compared with the prior art, the beneficial effects of this utility model are: 1. This utility model effectively improves the suspension and dispersion of dust by using spiral guide blades to form a spiral upward airflow. Combined with the periodic scraping action of the dynamic scraper, the dust adhering to the inner wall can be peeled off in time and carried out with the airflow, which significantly reduces the settling rate of dust on the tank wall. This solves the detection error problem caused by dust accumulation in traditional collection tanks, making the real-time dust concentration detection data more accurate and reliable.

[0011] 2. The coordinated design of the electric three-way valve and the dual air pumps realizes intelligent gas diversion control. When the dust detection unit determines that the emissions do not meet the standards, the system automatically switches to the return mode and re-introduces the excessive gas into the waste gas treatment device for secondary purification through the gas return pipe, avoiding the risk of secondary pollution. At the same time, the closed-loop feedback mechanism reduces the frequency of ineffective emissions and improves the treatment efficiency and energy utilization rate. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the internal structure of a dust and waste gas collection device.

[0013] Figure 2 This is an overall view of a dust and exhaust gas collection device.

[0014] Figure 3 This is a bottom view of a dust and exhaust gas collection device.

[0015] 1. Collection tank; 2. Tank cover; 3. Support; 4. Spiral guide vane; 5. Lower connecting rod; 6. Lower scraper; 7. Upper scraper; 8. Upper connecting rod; 9. Air inlet; 10. Primary exhaust pipe; 11. Electric three-way valve; 12. Secondary exhaust pipe; 13. Gas return pipe; 14. Dust detection unit; 15. First suction pump; 16. Second suction pump; 17. Central shaft; 18. Observation window; 19. Belt; 20. Motor mounting plate; 21. Motor; 22. Driving pulley; 23. Driven pulley. Detailed Implementation

[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0017] Please see Figure 1-3 In this embodiment of the present invention, a dust and exhaust gas collection device includes a collection tank 1, a tank cover 2, and spiral guide vanes 4. A support 3 is installed at the bottom of the collection tank 1, and the tank cover 2 is installed at the top of the collection tank 1. A central shaft 17 is provided inside the collection tank 1, and the bottom end of the central shaft 17 is connected to a drive assembly installed at the bottom of the collection tank 1. The drive assembly includes a motor mounting plate 20, a motor 21, a driving pulley 22, a driven pulley 23, and a belt 19. The motor mounting plate 20 is welded to the support 3, and a belt is installed on the motor mounting plate 20. There is a drive pulley 22, which is connected to the driven pulley 23 installed at the bottom of the central shaft 17 via a belt 19. The belt 19 drives the central shaft 17 to achieve stable operation, reduce operating noise, and has a simple structure that is easy to maintain and replace later. A spiral guide vane 4 is installed on the central shaft 17. A lower connecting rod 5 is welded to the lower half of the central shaft 17, and a lower scraper 6 is welded to the free end of the lower connecting rod 5. An upper connecting rod 8 is welded to the upper half of the central shaft 17, and an upper scraper 7 is welded to the free end of the upper connecting rod 8. The lower scraper 6 is an L-shaped plate, and one end of the lower scraper 6 is welded and fixed to the central shaft 17, which increases the contact area between the scraper and the bottom of the tank and improves the stripping effect of deposited dust, especially suitable for industrial dust scenarios that are prone to agglomeration.

[0018] Please see Figure 1-2An air inlet 9 is provided on one side of the collection tank 1 to optimize the flow direction of exhaust gas into the collection tank, improve the dust dispersion efficiency of the spiral guide vanes, and reduce the risk of local dust accumulation. A primary exhaust pipe 10 is installed on the tank cover 2. An electric three-way valve 11 is installed on the primary exhaust pipe 10. A secondary exhaust pipe 12 and a gas return pipe 13 are respectively installed on the other two ports of the electric three-way valve 11. A first suction pump 15 and a second suction pump 16 are respectively installed on the secondary exhaust pipe 12 and the gas return pipe 13. The primary exhaust pipe 1... A dust detection unit 14 is installed on the 0, which is a dust concentration sensor. The dust concentration sensor is connected to an external PLC controller. The PLC controller is electrically connected to the electric three-way valve 11, the first air pump 15, and the second air pump 16. The PLC controller is used to realize intelligent diversion control of exhaust gas. The gas return pipe 13 is connected to the air inlet of the dust exhaust gas treatment device. Through the closed-loop design, it is ensured that the gas that does not meet the standard is automatically returned to the treatment device for secondary purification, avoiding environmental pollution and reducing the energy consumption of repeated treatment. The collection tank 1 is equipped with an observation window 18, which allows operators to observe the working conditions inside the tank in real time (such as dust accumulation and scraper operation status), facilitating quick troubleshooting or adjustment of equipment parameters.

[0019] The working principle of this utility model is as follows: In use, the dust-laden exhaust gas first enters the collection tank tangentially from the inlet. The spiral guide vanes 4, driven by the central shaft 17, form a high-speed spiral upward airflow, causing the dust to be evenly dispersed in the airflow due to centrifugal force and move upward, effectively suppressing sedimentation. The lower scraper 6 and the upper scraper 7 rotate synchronously with the central shaft 17, continuously scraping the inner wall of the tank 1, peeling off the adhering dust and mixing it into the airflow. Subsequently, the primary exhaust pipe 10 introduces the mixed airflow into the dust detection unit 14 for real-time monitoring. If the detection meets the standard, the electric three-way valve 11 switches to the secondary exhaust pipe 12 for direct discharge. If the dust concentration exceeds the standard, the valve automatically turns to the gas return pipe 13, and the second suction pump 16 starts to reintroduce the exhaust gas into the treatment device for secondary purification until it meets the standard and then re-enters the discharge process. This design achieves efficient dust removal and closed-loop detection through the synergistic effect of airflow swirl separation, dynamic scraping wall cleaning, and intelligent diversion control, ensuring that the emitted gas consistently meets the standards.

[0020] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A dust and exhaust gas collection device, comprising a collection tank (1), a tank cover (2), and spiral guide vanes (4), characterized in that: A support (3) is installed at the bottom of the collection tank (1), and a tank cover (2) is installed at the top of the collection tank (1). A central shaft (17) is provided inside the collection tank (1). The bottom end of the central shaft (17) is connected to a drive assembly installed at the bottom of the collection tank (1). A spiral guide vane (4) is installed on the central shaft (17). A lower connecting rod (5) is welded to the lower half of the central shaft (17). A lower scraper (6) is welded to the free end of the lower connecting rod (5). An upper connecting rod (8) is welded to the upper half of the central shaft (17). The upper connecting rod (8) has an upper scraper (7) welded to its free end. The can cover (2) is equipped with a primary exhaust pipe (10). An electric three-way valve (11) is installed on the primary exhaust pipe (10). A secondary exhaust pipe (12) and a gas return pipe (13) are installed on the other two ports of the electric three-way valve (11). A first air pump (15) and a second air pump (16) are installed on the secondary exhaust pipe (12) and the gas return pipe (13). A dust detection unit (14) is installed on the primary exhaust pipe (10).

2. The dust and exhaust gas collection device according to claim 1, characterized in that: The drive assembly includes a motor mounting plate (20), a motor (21), a drive pulley (22), a driven pulley (23), and a belt (19). The motor mounting plate (20) is welded to the support (3). The drive pulley (22) is mounted on the motor mounting plate (20). The drive pulley (22) and the driven pulley (23) mounted on the bottom of the central shaft (17) are connected by the belt (19).

3. The dust and exhaust gas collection device according to claim 1, characterized in that: The collection tank (1) is equipped with an observation window (18).

4. The dust and exhaust gas collection device according to claim 1, characterized in that: An air inlet (9) is provided on one side of the collection tank (1).

5. The dust and exhaust gas collection device according to claim 1, characterized in that: The gas return pipe (13) is connected to the air inlet of the dust exhaust gas treatment device.

6. The dust and exhaust gas collection device according to claim 1, characterized in that: The lower scraper (6) is an L-shaped plate, and one end of the lower scraper (6) is welded and fixed to the central shaft (17).

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