Venturi wet dust removal and purification device

Abstract

The utility model belongs to the technical field of dust removal devices, and particularly relates to a venturi wet type dust removal purification device which comprises a rack, an action bin, an air inlet pipe, a venturi pipe and an air outlet pipe, a settling box is arranged at the lower end of the acting bin, and the settling box and the Venturi tube are connected with the circulating system assembly; the Venturi pipe comprises a reducing pipe, a throat pipe and an increasing pipe, an atomizing cavity connected with the water spraying assembly is formed in the throat pipe, the water spraying assembly comprises a spray head and a water spraying pipeline, a bottom plate is arranged at the near end of the throat pipe and connected with the rotating assembly, the rotating assembly comprises a second motor, a first gear and a second gear, and the second gear is connected with the bottom plate; according to the device, through the Venturi tube and the water spraying assembly, uniform and fine water mist can be generated, fine-particle dust can be effectively captured and purified, the removal effect of particles such as fine dust is improved, the rotating assembly can drive the water spraying assembly to rotate, dynamic coverage of the water mist in the throat tube is achieved, and the dust removal effect is improved. And non-uniform water mist coverage caused by fixed or static water mist is avoided.

Description

Technical Field

[0001] This utility model belongs to the technical field of dust removal devices, specifically relating to a Venturi wet dust removal and purification device. Background Technology

[0002] With the rapid development of industrial production, equipment such as shot blasting machines and sandblasting machines have been widely used in metal processing, surface treatment, and other fields. However, these machines generate a large amount of dust during operation, which contains metallic components such as aluminum alloys and is classified as metallic explosive dust. This type of dust not only harms the health of operators but may also cause dust explosions, while also causing serious air pollution to the surrounding environment. Therefore, how to effectively handle the dust generated by shot blasting and sandblasting machines has become an urgent problem to be solved in industrial production.

[0003] Currently, traditional dust control methods mainly include dry dust collection and wet dust collection. While dry dust collection can effectively remove larger dust particles, it is less effective at removing fine particles (e.g., particles ≤10μm in diameter) and poses a risk of dust explosion. Wet dust collectors capture and purify dust using water or other liquids, offering better dust removal efficiency and safety. However, existing wet dust collection equipment still has some shortcomings in practical applications. For example, the structural design of some wet dust collectors is not reasonable enough, leading to low dust removal efficiency. Furthermore, the water spray mechanism of traditional wet dust collectors has significant defects. For instance, fixed nozzles or static water mist designs result in uneven water mist coverage in the throat area, and the presence of metal particles in the dust from shot blasting machines can cause micron-sized particles to remain in the circulating water, easily clogging the spray nozzles. Additionally, the accumulation of metal ions accelerates equipment corrosion and reduces system reliability. Utility Model Content

[0004] To address the aforementioned shortcomings of existing technologies, this utility model provides a Venturi wet dust removal and purification device, which solves the problems of low dust removal efficiency and poor spraying effect of existing dust treatment devices.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0006] A venturi wet dust collection and purification device is provided, including a frame, an operating chamber on the frame, an air inlet pipe on one side of the bottom of the operating chamber, the output end of the air inlet pipe being connected to a venturi tube, the output end of the venturi tube being connected to the operating chamber, an air outlet pipe on one side of the top of the operating chamber, a cyclone dust collector on the top of the operating chamber, the cyclone dust collector being connected to a first motor, a drain pipe on the bottom of the operating chamber, the drain pipe being connected to a settling tank, the settling tank being located at the bottom of the operating chamber, the settling tank being connected to a circulation system component, and the circulation system component being connected to the venturi tube.

[0007] The venturi tube includes a converging tube, a throat, and a diverging tube connected in sequence. The throat has an atomizing chamber inside, which is connected to a water spray assembly. The water spray assembly includes several nozzles, which are mounted on a water spray pipe located inside the throat. A base plate is located at one end of the throat near the converging tube, and the base plate is connected to a rotating assembly. The rotating assembly includes a second motor, the output of which is connected to a first gear. The first gear and the second gear mesh with each other. A rotating shaft is located in the middle of the second gear, and one end of the rotating shaft is connected to the base plate.

[0008] The beneficial effects of adopting the above technical solution are as follows: The frame in the Venturi wet dust removal and purification device provides stable support. The working chamber serves as the main dust treatment space. Dust-laden gas is introduced into the Venturi tube through the inlet pipe. The Venturi tube accelerates and depressurizes the gas through the synergistic effect between the converging tube, throat, and diverging tube. In the throat area, the water spray assembly generates water mist through several nozzles to capture dust in the gas. The rotating assembly drives the base plate to rotate through the second motor, which in turn drives the water spray assembly to rotate, achieving dynamic coverage of water mist. This ensures all-round spraying inside the throat and improves the spraying effect. The gas treated by the Venturi tube enters the working chamber, where the cyclone dust collector further removes dust through centrifugal force. The wastewater containing dust enters the settling tank through the drain pipe. The wastewater settles in the settling tank, and the upper clear liquid in the settling tank flows back to the water spray assembly of the Venturi tube through the circulation system assembly, realizing water recycling. The treated clean gas is discharged from the device through the outlet pipe, completing the entire dust removal process.

[0009] This Venturi wet scrubbing device uses an atomizing chamber and water spray assembly inside the throat of a Venturi tube to generate a uniform and fine water mist. This effectively captures and purifies fine dust particles, thus significantly improving the removal efficiency of fine dust and other particles. The rotating assembly drives the water spray assembly to rotate, achieving dynamic coverage of the water mist within the throat, avoiding uneven coverage caused by fixed nozzles or static water mist, thereby improving the spraying effect. Simultaneously, the use of a circulation system and settling tank allows the supernatant in the settling tank of dust-containing wastewater to be recycled after settling. This reduces the risk of micron-sized particles remaining in the circulating water clogging the nozzles and also reduces equipment corrosion caused by the accumulation of metal ions.

[0010] Furthermore, a receiving cavity is provided in the middle of the base plate, and the water spray pipe is fixed through the side wall of the base plate and connected to the receiving cavity. The receiving cavity is connected to the circulation system components.

[0011] The beneficial effects of adopting the above technical solution are as follows: the containment chamber is used to contain water entering from the circulation system components. At the same time, the containment chamber can serve as a preliminary filtration or sedimentation area, which helps to reduce the risk of clogging caused by impurities or particles in the water directly impacting the nozzles. The water is then distributed to each nozzle through the spray pipe, avoiding the problem of poor spraying effect caused by uneven water flow or pressure fluctuations.

[0012] Furthermore, a limit block is provided at the outer end of the base plate, and a limit groove is provided on the throat tube, with the limit groove matching the limit block.

[0013] The beneficial effects of adopting the above technical solution are as follows: the limiting block and limiting groove can not only prevent the base plate from shifting radially or axially, thus ensuring that the water spray assembly rotates stably around the center of the throat pipe and maintaining the uniformity and effectiveness of the spray, but also ensure the precise docking of the base plate on the throat pipe, avoiding structural instability or poor sealing caused by installation deviation.

[0014] Furthermore, the throat includes a front throat and a rear throat, the front throat is connected to a converging tube, the rear throat is connected to a diverging tube, and the water spray assembly is disposed between the front throat and the rear throat.

[0015] The beneficial effects of adopting the above technical solution are as follows: By connecting the front throat to the converging tube and the rear throat to the diverging tube, the airflow velocity increases and the pressure decreases when passing through the converging tube, while the velocity decreases and the pressure recovers when passing through the diverging tube. This helps to form a low-pressure zone in the throat area, enhancing the suction and acceleration of dust-laden gas and improving dust removal efficiency. The water spray assembly is set between the front and rear throats, allowing it to fully utilize the low-pressure environment in the throat area, ensuring thorough mixing of water mist and dust-laden gas. At the same time, the segmented structure of the front and rear throats provides sufficient installation space for the water spray assembly, facilitating the arrangement, adjustment, and rotation of the nozzles.

[0016] Furthermore, the circulation system components include a water tank, the top of which is connected to a settling tank via a pipe, and a first outlet pipe located on one side of the bottom of the water tank, which is connected to a first water pump. The first water pump is connected to the receiving cavity via a water supply pipe. The top of the water tank has an inlet, and the bottom of the water tank has an outlet.

[0017] The beneficial effects of adopting the above technical solution are as follows: The top of the water tank is connected to the settling tank via a pipe, allowing the settled water to flow back to the water tank. The first water pump then pumps the water from the tank to the spray system, where it is treated in the settling tank and then flows back to the water tank, forming a closed-loop circulation system. This not only achieves water resource recycling and saves water resources but also reduces the operating costs of the dust removal and purification device. The outlet at the bottom of the water tank facilitates the periodic discharge of wastewater and impurities, maintaining the cleanliness of the tank's interior. Simultaneously, the inlet allows for timely replenishment of fresh water, ensuring water quality and continuous use.

[0018] Furthermore, a second water outlet pipe is provided on one side of the top of the settling tank, which is connected to the top of the water tank. A second water pump is installed on the second water outlet pipe, and a sewage outlet is provided at the bottom of the settling tank.

[0019] The beneficial effects of adopting the above technical solution are as follows: the settling tank uses gravity settling to initially separate large particulate impurities and some harmful substances from the dusty water, which are deposited at the bottom of the tank. The upper clear liquid after settling is relatively clean and can be transported to the water tank through the second water outlet pipe set on one side of the top of the settling tank, realizing the effective recycling and reuse of water resources. The sewage outlet at the bottom of the settling tank facilitates the regular discharge of sludge and impurities deposited at the bottom of the tank, so as to keep the inside of the settling tank clean.

[0020] Furthermore, a filter screen is installed inside the water tank on one side near the outlet end of the second water outlet pipe.

[0021] The beneficial effects of adopting the above technical solution are as follows: the filter screen can effectively filter out tiny particles, suspended solids or other impurities in the water flowing back from the settling tank to the water tank, ensuring that the water entering the water tank is clean, thereby helping to maintain the cleanliness of the spray water and avoiding impurities from clogging the water spray components and affecting the dust removal effect.

[0022] Furthermore, a demister is installed near the air outlet of the working chamber.

[0023] The beneficial effects of adopting the above technical solution are: the demister can separate the liquid droplets carried in the gas after dust removal, ensuring that the discharged flue gas is dry and clean.

[0024] In summary, the beneficial effects of the Venturi wet dust removal and purification device provided by this utility model are as follows:

[0025] (1) The Venturi wet dust removal and purification device can generate uniform and fine water mist through the atomizing chamber and water spraying components set inside the Venturi tube throat, effectively capturing and purifying fine dust particles, and significantly improving dust removal efficiency.

[0026] (2) The rotating component in the Venturi wet dust removal and purification device drives the water spray component to rotate, realizing the dynamic coverage of water mist in the throat, improving the spraying effect and dust removal efficiency, and avoiding the problem of uneven water mist coverage caused by fixed nozzles or static water mist.

[0027] (3) The settling tank in the Venturi wet dust removal and purification device can initially separate large particles and some harmful substances in the dust-containing water through gravity settling, and deposit them at the bottom of the tank. The upper clear liquid after settling is relatively clean. The upper clear liquid can be returned to the water tank through the circulation system components, and then transported to the spray water components by the first water pump to form a closed loop circulation system, realizing the recycling of water resources, saving water resources and reducing operating costs. Attached Figure Description

[0028] Figure 1 This is a schematic diagram of the structure of this utility model;

[0029] Figure 2 This is a schematic diagram of the water spray assembly in this utility model;

[0030] The components are as follows: 1. Frame; 2. Working chamber; 3. Inlet pipe; 4. Venturi tube; 5. Outlet pipe; 6. Cyclone dust collector; 7. First motor; 8. Settling tank; 9. Converging tube; 10. Throat; 11. Diverging tube; 12. Nozzle; 13. Base plate; 14. Second motor; 15. First gear; 16. Second gear; 17. Receiving cavity; 18. Water spray pipe; 19. Water tank; 20. First outlet pipe; 21. First water pump; 22. Water supply pipe; 23. Second outlet pipe. Detailed Implementation

[0031] The specific embodiments of this utility model are described below to enable those skilled in the art to understand this utility model. However, it should be understood that this utility model is not limited to the scope of the specific embodiments. For those skilled in the art, as long as various changes are within the spirit and scope of this utility model as defined and determined by the appended claims, these changes are obvious. All utility model creations utilizing the concept of this utility model are within the scope of protection.

[0032] like Figures 1-2As shown, the Venturi wet dust removal and purification device provided by this utility model includes a frame 1, an operating chamber 2 on the frame 1, an air inlet pipe 3 on one side of the bottom of the operating chamber 2, the output end of the air inlet pipe 3 being connected to a Venturi tube 4, the output end of the Venturi tube 4 being connected to the operating chamber 2, an air outlet pipe 5 on one side of the upper end of the operating chamber 2, a cyclone dust collector 6 on the top of the operating chamber 2, the cyclone dust collector 6 being connected to a first motor 7, and a demister near the air outlet pipe 5 in the operating chamber 2; the Venturi tube 4 includes a converging tube 9, a throat 10, and a diverging tube 11 connected in sequence, the throat 10 having an atomizing chamber inside, and the throat 10 including a front throat 10 and a rear throat 10. The front throat 10 is connected to the converging tube 9, and the rear throat 10 is connected to the diverging tube 11. The water spray assembly is located between the front throat 10 and the rear throat 10. The atomizing chamber is connected to the water spray assembly. The water spray assembly includes several nozzles 12, which are arranged on the water spray pipe 18. The water spray pipe 18 is located inside the throat 10. A base plate 13 is provided at one end of the throat 10 near the converging tube 9. The base plate 13 is connected to the rotating assembly. The rotating assembly includes a second motor 14. The output end of the second motor 14 is connected to the first gear 15. The first gear 15 and the second gear 16 are meshed. A rotating shaft is provided in the middle of the second gear 16. One end of the rotating shaft is connected to the base plate 13. In this Venturi wet dust collector, the frame 1 provides stable support for the entire device. The working chamber 2 serves as the main dust treatment space. Dust-laden gas is introduced into the Venturi tube 4 through the inlet pipe 3. The Venturi tube 4 accelerates and depressurizes the gas through the synergistic action of the converging tube 9, the throat 10, and the diverging tube 11. In the throat 10 area, the water spray assembly generates water mist through several nozzles 12 to capture dust in the gas. The rotating assembly drives the base plate 13 to rotate via the second motor 14, which in turn drives the water spray assembly to rotate, thus achieving water mist generation. The dynamic coverage ensures all-round spraying inside the throat 10, improving the spraying effect. The gas treated by the Venturi tube 4 enters the action chamber 2, and the cyclone dust collector 6 further removes dust from the gas through centrifugal force. The wastewater containing dust enters the settling tank 8 through the drain pipe. The wastewater settles in the settling tank 8, and the upper clear liquid in the settling tank 8 flows back to the water spray component of the Venturi tube 4 through the circulation system component to realize the recycling of water. The treated clean gas is discharged from the device through the exhaust pipe 5, completing the entire dust removal process.

[0033] like Figure 2As shown, a receiving cavity 17 is provided in the middle of the base plate 13. The water spray pipe 18 is fixed through the side wall of the base plate 13 and connected to the receiving cavity 17. The receiving cavity 17 is connected to the circulation system component. The circulation system component includes a water tank 19. The top of the water tank 19 is connected to the settling tank 8 through a pipe. A first water outlet pipe 20 is provided on one side of the bottom of the water tank 19. The first water outlet pipe 20 is connected to a first water pump 21. The first water pump 21 is connected to the receiving cavity 17 through a water supply pipe 22. A water inlet is provided at the top of the water tank 19. A water outlet is provided on one side of the bottom of the water tank 19. A filter screen is provided inside the water tank 19 near the water outlet end of the second water outlet pipe 23. The top of the water tank 19 is connected to the settling tank 8 via a pipe, allowing the settled water to flow back to the water tank 19. The water in the water tank 19 is then transported to the receiving chamber 17 by the first water pump 21. The receiving chamber 17 is used to receive water entering from the circulation system components. At the same time, the receiving chamber 17 can serve as a preliminary filtration or sedimentation area, which helps reduce the risk of clogging caused by impurities or particles in the water directly impacting the nozzles 12. The water is then distributed to each nozzle 12 through the spray pipe 18, avoiding the problem of poor spraying effect caused by uneven water flow or pressure fluctuations.

[0034] In this embodiment of the utility model, a limiting block is provided at the outer end of the base plate 13, and a limiting groove is provided on the throat pipe 10. The limiting groove matches the limiting block. The limiting block and the limiting groove can not only prevent the base plate 13 from radially or axially shifting, thereby ensuring that the water spray assembly rotates stably around the center of the throat pipe 10 and maintaining the uniformity and effectiveness of the spray, but also ensure the precise docking of the base plate 13 on the throat pipe 10, avoiding structural instability or poor sealing caused by installation deviation.

[0035] like Figure 1 As shown, a second water outlet pipe 23 is provided on one side of the top of the settling tank 8. The second water outlet pipe 23 is connected to the top of the water tank 19, and a second water pump is provided on the second water outlet pipe 23. A drain outlet is provided at the bottom of the settling tank 8. The settling tank 8 uses gravity settling to initially separate large particulate impurities and some harmful substances in the dusty water, which are deposited at the bottom of the tank. The upper clear liquid after settling is relatively clean and can be transported to the water tank 19 through the second water outlet pipe 23 on one side of the top of the settling tank 8, realizing the effective recycling and reuse of water resources. The drain outlet at the bottom of the settling tank 8 facilitates the periodic discharge of sludge and impurities deposited at the bottom of the tank to keep the inside of the settling tank 8 clean.

[0036] In summary, the Venturi wet dust collector provided by this utility model can generate uniform and fine water mist through the atomizing chamber and water spraying assembly set inside the throat 10 of the Venturi tube 4, effectively capturing and purifying fine dust particles, significantly improving dust removal efficiency. In addition, the rotating assembly drives the water spraying assembly to rotate, realizing dynamic coverage of water mist in the throat 10, improving the spraying effect and dust removal efficiency, and avoiding the problem of uneven water mist coverage caused by fixed nozzles or static water mist.

Claims

1. A Venturi wet dust removal and purification device, characterized in that: The device includes a frame (1), on which a working chamber (2) is provided. An air inlet pipe (3) is provided on one side of the bottom end of the working chamber (2). The output end of the air inlet pipe (3) is connected to a venturi tube (4). The output end of the venturi tube (4) is connected to the working chamber (2). An air outlet pipe (5) is provided on one side of the upper end of the working chamber (2). A cyclone dust collector (6) is provided at the top of the working chamber (2). The cyclone dust collector (6) is connected to a first motor (7). A drain pipe is provided at the lower end of the working chamber (2). The drain pipe is connected to a settling tank (8). The settling tank (8) is located at the bottom of the working chamber (2). The settling tank (8) is connected to a circulation system component. The circulation system component is connected to the venturi tube (4). The Venturi tube (4) includes a tapered tube (9), a throat tube (10), and a diffuser tube (11) connected in sequence. The throat tube (10) has an atomizing chamber inside, which is connected to the water spraying assembly. The water spraying assembly includes several nozzles (12), which are disposed on the water spraying pipe (18). The water spraying pipe (18) is disposed inside the throat tube (10). A base plate (13) is disposed at one end of the throat tube (10) near the tapered tube (9). The base plate (13) is connected to the rotating assembly. The rotating assembly includes a second motor (14). The output end of the second motor (14) is connected to a first gear (15). The first gear (15) is meshed with a second gear (16). A rotating shaft is disposed in the middle of the second gear (16). One end of the rotating shaft is connected to the base plate (13).

2. The Venturi wet dust removal and purification device according to claim 1, characterized in that: The base plate (13) has a receiving cavity (17) in the middle. The water spray pipe (18) is fixed through the side wall of the base plate (13) and connected to the receiving cavity (17). The receiving cavity (17) is connected to the circulation system component.

3. The Venturi wet dust removal and purification device according to claim 1, characterized in that: The outer end of the base plate (13) is provided with a limiting block, and the throat (10) is provided with a limiting groove, which matches the limiting block.

4. The Venturi wet dust collection and purification device according to claim 1, characterized in that: The throat (10) includes a front throat (10) and a rear throat (10). The front throat (10) is connected to the converging pipe (9), and the rear throat (10) is connected to the expanding pipe (11). The water spray assembly is disposed between the front throat (10) and the rear throat (10).

5. The Venturi wet dust removal and purification device according to claim 1, characterized in that: The circulation system component includes a water tank (19), the top of which is connected to a settling tank (8) via a pipe, and a first outlet pipe (20) is provided on one side of the bottom of the water tank (19). The first outlet pipe (20) is connected to a first water pump (21), and the first water pump (21) is connected to a receiving cavity (17) via a water supply pipe (22). The top of the water tank (19) is provided with an inlet, and the bottom of the water tank (19) is provided with an outlet.

6. The Venturi wet dust removal and purification device according to claim 1, characterized in that: A second water outlet pipe (23) is provided on one side of the top of the settling tank (8). The second water outlet pipe (23) is connected to the top of the water tank (19). A second water pump is provided on the second water outlet pipe (23). A sewage outlet is provided at the bottom of the settling tank (8).

7. The Venturi wet dust removal and purification device according to claim 6, characterized in that; A filter screen is installed on one side of the water tank (19) near the outlet end of the second water outlet pipe (23).

8. The Venturi wet dust removal and purification device according to claim 1, characterized in that: A demister is installed near the air outlet pipe (5) of the working chamber (2).

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