Wet dust collector
By combining a venturi tube, a cyclone water curtain dust collector, a scrubbing tower, and a three-stage filter box, the problems of fine dust removal and pipe blockage in wet dust collectors are solved, achieving efficient dust removal and water resource recycling, and ensuring the stable operation of the equipment.
Patent Information
- Application Number
- CN202520552352.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-26
- Publication Date
- 2026-02-24
- Estimated Expiration
- 2035-03-26
AI Technical Summary
Existing wet scrubbers cannot effectively remove fine dust particles, and dust-laden wastewater is prone to clogging pipes during discharge and treatment, affecting the normal operation of the equipment.
It adopts a combination structure of Venturi tube, cyclone water curtain dust removal tower, scrubbing tower and filter box. It removes dust through multi-stage filtration and liquid contact. Combined with three-stage filter box and water resource recycling, it ensures dust removal efficiency and system stability.
It achieves efficient removal of dust of various particle sizes, avoids pipe blockage, reduces operating costs and water consumption, and ensures the normal operation of the dust removal system.
Smart Images
Figure CN223931013U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of dust removal technology, specifically to a wet dust collector. Background Technology
[0002] A wet scrubber is a dust collector that uses water or other liquids (such as alkaline solutions or acidic solutions) as the collection medium. When dust-laden gas enters the wet scrubber, it comes into full contact with the liquid, causing the dust particles to settle along with the liquid. The gas then passes through a liquid-gas separator to remove any entrained fine droplets before being discharged from the exhaust port. However, while existing wet scrubbers can remove most of the dust from the dust-laden gas, a certain number of fine dust particles remain, leading to environmental pollution. Furthermore, the wastewater containing dust requires long pipeline transport during discharge and treatment, which not only increases pipeline laying costs and equipment footprint but also easily causes dust to redeposit in the pipelines, clogging them and affecting the normal operation of the equipment. Utility Model Content
[0003] This utility model provides a wet dust collector that can solve the problems of ineffective removal of fine dust particles and the easy clogging of pipes by dust-laden wastewater during discharge and treatment, which affects the normal operation of the equipment.
[0004] This application provides the following technical solution:
[0005] A wet scrubber includes a venturi tube. The converging section of the venturi tube is connected to a dust collection pipe, and the expanding section of the venturi tube is connected to the air inlet of a cyclone water curtain dust collector. The air outlet of the cyclone water curtain dust collector is connected to the air inlet of a scrubbing tower, the air outlet of the scrubbing tower is connected to the air inlet of a filter box, the air outlet of the filter box is connected to the air inlet of a fan, and the air outlet of the fan is connected to an exhaust pipe. The cyclone water curtain dust collector and the scrubbing tower are mounted above a sedimentation tank via supports. The sedimentation tank includes a settling zone and a clear water zone. The settling zone of the sedimentation tank is connected to the drain outlets at the bottom of the cyclone water curtain dust collector and the scrubbing tower, respectively. The clear water zone of the sedimentation tank is connected to sprayers installed on the venturi tube, the cyclone water curtain dust collector, and the scrubbing tower via a water supply pump and a water supply pipeline.
[0006] Beneficial effects:
[0007] The dust-laden gas first passes through a venturi tube, where the high-speed airflow at its throat causes water droplets to collide and agglomerate with the dust, transforming tiny dust particles into larger ones. It then enters a cyclone water curtain dust collector, where the combined effects of centrifugal force and the water curtain further separate the dust. Next, it passes through a scrubbing tower, where the liquid and gas come into full contact to absorb and capture any remaining fine dust and soluble pollutants. Finally, it passes through a filter box to intercept any remaining fine particles, achieving multi-stage filtration that effectively removes dust of various particle sizes with high dust removal efficiency. The dust-laden wastewater discharged from the cyclone water curtain dust collector and scrubbing tower can directly enter the settling zone of the sedimentation tank, preventing pipe blockage and ensuring the normal operation of the dust removal system. After sedimentation, the water from the clear water zone is recycled back to the sprayers of the venturi tube, cyclone water curtain dust collector, and scrubbing tower via a water pump and pipeline, saving water resources and reducing operating costs.
[0008] Furthermore, the filter box adopts a three-stage filter box, with a coarse filter layer, a medium filter layer and a high-efficiency filter layer arranged sequentially from the air inlet to the air outlet.
[0009] Beneficial effects: After dust-laden gas enters the three-stage filtration chamber, it passes through the coarse filter layer, where larger dust particles are directly intercepted, removing most visible impurities from the gas. As the gas continues to move forward, the medium-efficiency filter layer intercepts even smaller dust particles, further reducing the dust content in the gas. Finally, the high-efficiency filter layer, with its tiny pores, captures extremely fine dust particles, even filtering out particles smaller than micrometers, resulting in a high degree of gas purification.
[0010] Furthermore, a safety valve is provided between the venturi tube and the dust removal pipe.
[0011] Beneficial effects: The safety valve can automatically adjust the gas flow rate according to the pressure changes in the pipeline, ensuring the normal and stable operation of the entire dust removal system.
[0012] Furthermore, the dust removal pipe is located diagonally above the cyclone water curtain dust removal tower, and the venturi tube is diagonally positioned between the dust removal pipe and the cyclone water curtain dust removal tower.
[0013] Beneficial effects: The oblique arrangement of the Venturi tubes facilitates the smooth downward flow and discharge of wastewater containing dust particles and other impurities, preventing accumulation in pipes and equipment and ensuring normal operation of the equipment.
[0014] Furthermore, a partition is provided between the settling zone and the clear water zone of the sedimentation tank.
[0015] Beneficial effects: The baffle can prevent the sludge that has settled in the settling zone from re-entering the clear water zone due to water flow disturbance, so that the sludge settles stably in the settling zone, ensuring the clear water quality in the clear water zone, and ensuring that the spray water returning to the Venturi tube, cyclone water curtain dust removal tower and scrubbing tower meets higher water quality requirements, thereby improving the dust removal effect.
[0016] Furthermore, the clear water zone of the sedimentation tank is equipped with a baffle near the partition, and a filter plate is installed on the baffle. The outlet of the clear water zone is located above the filter plate.
[0017] Beneficial effects: The baffle makes the water flow in the clear water zone more uniform and stable, avoiding phenomena such as short-circuiting and eddies, and ensuring the stability of the output water quality. The filter plate intercepts residual impurities in the water, further improving water quality and preventing impurities from entering subsequent systems with the water flow, thus ensuring dust removal effectiveness. Attached Figure Description
[0018] Figure 1 This is a front view of the structure of Embodiment 1 of the wet dust collector of this utility model;
[0019] Figure 2 This is a cross-sectional view of the sedimentation tank in Embodiment 2 of the wet dust collector of this utility model. Detailed Implementation
[0020] The following detailed description illustrates the specific implementation method:
[0021] The markings in the accompanying drawings include: dust removal duct 1, safety valve 2, venturi tube 3, cyclone water curtain dust removal tower 4, annular duct 401, washing tower 5, observation window 501, filter box 6, fan 7, exhaust duct 8, support 9, sedimentation tank 10, settling zone 11, clear water zone 12, partition 13, baffle 14, filter plate 15, water supply pump 16, and water supply pipeline 17.
[0022] Example 1
[0023] like Figures 1 to 2As shown, the wet scrubber includes a Venturi tube 3, which comprises a converging section, a throat, and an expanding section arranged sequentially. The converging section of the Venturi tube 3 is connected to the dust collection pipe 1 via a connecting pipe. A safety valve 2 is installed between the connecting pipe and the dust collection pipe 1. A sprayer is installed on the converging end of the Venturi tube 3. The expanding section of the Venturi tube 3 is connected to the air inlet of the cyclone water curtain dust collector 4. The dust collection pipe 1 is suspended from the workshop ceiling and is located diagonally above the cyclone water curtain dust collector 4. The Venturi tube 3 is diagonally positioned between the dust collection pipe 1 and the cyclone water curtain dust collector 4. The air outlet of the cyclone water curtain dust collector 4 is connected to the air inlet of the scrubbing tower 5. The air outlet of the scrubbing tower 5 is connected to the air inlet of the filter box 6. The air outlet of the filter box 6 is connected to the air inlet of the fan 7. The air outlet of the fan 7 is connected to the exhaust pipe 8. The cyclone water curtain dust collector 4 has a cylindrical upper section and a conical lower section. The cylindrical section has an air inlet at the bottom, an air outlet at the top, and a drain outlet at the bottom. An annular pipe 401 connects to a sprayer inside the cylindrical section. The scrubbing tower 5 also has a cylindrical upper section and a conical lower section. The cylindrical section has an air inlet at the bottom, an air outlet at the top, and a drain outlet at the bottom. Multiple layers of packing are installed above the air inlet on the inner side of the cylindrical section, with a sprayer above each layer. A demister is installed below the air outlet on the inner side of the scrubbing tower 5. Multiple observation windows 501 are also provided on the scrubbing tower 5. The filter box 6 is a three-stage filter box 6, with an air inlet on one side and an air outlet on the other side. Inside the filter box 6, from the air inlet to the air outlet, there are sequentially arranged coarse filter layers, medium filter layers, and high-efficiency filter layers. The cyclone water curtain dust collector 4 and the washing tower 5 are mounted above the sedimentation tank 10 via supports 9. Multiple outwardly extending support sections are provided on the lower outer periphery of the cylindrical structure of the cyclone water curtain dust collector 4 and the lower outer periphery of the cylindrical section of the washing tower 5. Both the cyclone water curtain dust collector 4 and the washing tower 5 are supported on the supports 9 via these support sections and are fixedly connected to the supports 9. The sedimentation tank 10 includes a settling zone 11 and a clear water zone 12. A partition 13 is provided between the settling zone 11 and the clear water zone 12. The settling zone 11 is located at the bottom of the cyclone water curtain dust collector 4 and the washing tower 5. The settling zone 11 is connected to the drain outlets at the bottom of the cyclone water curtain dust collector 4 and the washing tower 5, respectively. The clear water zone 12 is located below the venturi tube 3. The clear water zone 12 has multiple water outlets, which are connected to the sprayers on the venturi tube 3, the cyclone water curtain dust collector 4, and the washing tower 5 through their respective water supply pumps 16 and water supply pipelines 17.
[0024] The operating method is as follows: Start the fan 7. The fan 7 generates suction, creating negative pressure within the dust collection duct 1. Dust-laden gas in the workshop is drawn into the dust collection duct 1 under this negative pressure. The dust-laden gas passes through the dust collection duct 1 and enters the venturi tube 3. Simultaneously, the sprayers at the contraction end spray water onto the dust-laden gas, causing dust particles to collide and agglomerate with the water. The dust-laden gas enters the cyclone water curtain dust collector tower 4, flowing upwards from the lower inlet and forming a cyclone. The sprayers connected to the outer annular pipe 401 spray water into the tower, forming a water curtain. During its ascent, the gas comes into full contact with the water curtain, further capturing the dust particles. The dust-laden gas enters the scrubbing tower 5. As the gas passes through the packing material, it mixes and collides again with the water sprayed from the upper sprayers, continuously removing dust particles. The gas flows upwards and passes through a demister to remove water mist. After entering the filter box 6, the dust-laden gas passes sequentially through a coarse filter layer, a medium filter layer, and a high-efficiency filter layer. The coarse filter layer intercepts larger residual dust particles, the medium-efficiency filter layer further filters medium-sized dust particles, and the high-efficiency filter layer captures fine dust particles, ensuring that the gas is deeply purified. The purified gas is discharged to the external environment through the exhaust pipe 8. The dust-laden wastewater discharged from the bottom drain of the cyclone water curtain dust collector 4 and the scrubbing tower 5 flows into the settling zone 11 of the sedimentation tank 10. In the settling zone 11, the dust particles gradually settle to the bottom under the action of gravity and separate from the water. After a certain period of settling, the relatively clear water in the upper layer enters the clear water zone 12 through the baffle 13. The water in the clear water zone 12 is transported to the sprayers on the Venturi tube 3, the cyclone water curtain dust collector 4, and the scrubbing tower 5 through the water supply pump 16 and the water supply pipeline 17, respectively, to realize the recycling of water resources.
[0025] Example 2
[0026] The difference between this embodiment and Embodiment 1 is that, as Figure 2 As shown, the clear water zone 12 of the sedimentation tank 10 is equipped with a baffle 14 near the partition 13. There is a space for liquid to pass through between the baffle 14 and the partition 13. A filter plate 15 is provided on the baffle 14. The outlet of the clear water zone 12 is located above the filter plate 15. The liquid in the clear water tank flows out from the outlet after passing through the filter plate 15.
[0027] The above are merely embodiments of this utility model, and the utility model is not limited to the field covered by this embodiment. Commonly known structures and characteristics in the solutions are not described in detail here. It should be noted that those skilled in the art can make various modifications and improvements without departing from the structure of this utility model, and these should also be considered within the scope of protection of this utility model. These modifications will not affect the effectiveness of the implementation of this utility model or the practicality of the patent. The scope of protection claimed in this application should be determined by the content of its claims, and the specific embodiments described in the specification can be used to interpret the content of the claims.
Claims
1. A wet dust collector, characterized in that, The system includes a venturi tube, the converging section of which is connected to a dust removal pipe, the expanding section of which is connected to the air inlet of a cyclone water curtain dust collector, the air outlet of which is connected to the air inlet of a scrubbing tower, the air outlet of which is connected to the air inlet of a filter box, the air outlet of which is connected to the air inlet of a blower, and the air outlet of the blower is connected to an exhaust pipe. The cyclone water curtain dust collector and the scrubbing tower are mounted above a sedimentation tank via supports. The sedimentation tank includes a settling zone and a clear water zone. The settling zone of the sedimentation tank is connected to the drain outlets at the bottom of the cyclone water curtain dust collector and the scrubbing tower, respectively. The clear water zone of the sedimentation tank is connected to sprayers installed on the venturi tube, the cyclone water curtain dust collector, and the scrubbing tower via a water supply pump and a water supply pipeline.
2. The wet dust collector according to claim 1, characterized in that: The filter box is a three-stage filter box, with a coarse filter layer, a medium filter layer and a high-efficiency filter layer arranged sequentially from the air inlet to the air outlet.
3. The wet dust collector according to claim 1, characterized in that: A safety valve is installed between the venturi tube and the dust removal pipe.
4. The wet dust collector according to claim 1, characterized in that: The dust removal pipe is located diagonally above the cyclone water curtain dust removal tower, and the venturi tube is diagonally positioned between the dust removal pipe and the cyclone water curtain dust removal tower.
5. The wet dust collector according to claim 1, characterized in that: A partition is provided between the settling zone and the clear water zone of the sedimentation tank.
6. The wet dust collector according to claim 5, characterized in that: The sedimentation tank has a baffle near the partition in the clear water zone, and a filter plate is installed on the baffle. The outlet of the clear water zone is located above the filter plate.