Secondary countercurrent water film dust remover
By designing a two-stage counter-current water film dust collector, which combines a float layer and spray pipes, and utilizing airflow speed control and the centrifugal force of the rotating float, the problems of low efficiency and high cost of existing water film dust collectors are solved, achieving efficient dust removal and energy-saving and environmentally friendly effects.
Patent Information
- Application Number
- CN202520171387.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-25
- Publication Date
- 2026-01-06
- Estimated Expiration
- 2035-01-25
AI Technical Summary
Existing water film dust collectors suffer from problems such as low dust removal efficiency, high liquid-to-gas ratio, large sewage discharge, high energy consumption, short equipment operation cycle, and inability to be scaled up. In addition, existing dust collectors are either costly or have significant limitations.
A two-stage countercurrent water film dust collector is designed, which adopts a two-stage dust collection chamber structure. It utilizes a combination of a float layer and spray pipes to achieve efficient dust adsorption through airflow speed control and the centrifugal force of the rotating float. Combined with multiple absorptions of water mist, the airflow speed is reduced to improve the dust removal effect.
It achieves efficient adsorption of large and small dust particles, extends the equipment's operating cycle, reduces energy consumption and operating costs, and adapts to the needs of large-scale applications.
Smart Images
Figure CN223760700U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of gas environmental protection equipment technology, specifically to a two-stage countercurrent water film dust collector. Background Technology
[0002] Currently, the main types of water-based dust collectors on the market include spray type, impact type, water bath type, and venturi type. These types of dust collectors have disadvantages such as low dust removal efficiency, unstable dust removal effect, large liquid-to-gas ratio, large discharge volume, high energy consumption, waste of water and electricity resources, and inability to be scaled up, making them unable to meet increasingly stringent environmental protection requirements. Sintered plastic plate dust collectors can meet emission requirements, but their high cost places a significant economic burden on buyers. Bag filter dust collectors have limitations, only applicable to dry air or low-moisture conditions. Existing water film dust collectors have low operating costs, but during use, the outlet adsorption filter layer often becomes clogged with a large amount of fine dust, requiring frequent replacement and shortening the equipment's operating cycle. Analysis shows that this is because the airflow velocity is too high; the water film dust collector can only adsorb larger particles, while fine dust escapes through the gaps in the floats, causing blockage of the outlet adsorption filter layer. Utility Model Content
[0003] This invention addresses the shortcomings of existing gas dust removal environmental protection equipment by providing a two-stage counter-current water film dust collector.
[0004] The technical solution adopted by this utility model to solve its technical problem is:
[0005] A two-stage countercurrent water film dust collector includes a fan and a dust collection box. The dust collection box is internally divided into a primary dust collection chamber and a secondary dust collection chamber. A baffle is installed at the lower part of the primary dust collection chamber and the lower part of the secondary dust collection chamber. A float layer and a spray pipe are installed in the primary dust collection chamber and the secondary dust collection chamber. The float layer is fixed by two steel mesh plates. Return water pipes are installed at the bottom of the primary dust collection chamber and the bottom of the secondary dust collection chamber respectively. A guide plate is installed between the primary and secondary dust collection chambers. The guide plate guides the gas in an S-shape from the primary dust collection chamber to the secondary dust collection chamber. A demister is installed at the top of the secondary dust collection chamber.
[0006] The aforementioned buoy layer consists of several PVC buoyancy balls.
[0007] An adsorption filter layer is installed at the outlet of the aforementioned dust collection box.
[0008] The return water pipes of the primary and secondary dust removal chambers are connected to an external water filtration and circulation device.
[0009] In use, the fan delivers dust-laden gas into the dust collection chamber. Guided by the baffles in the primary dust collection chamber, the gas rises from the bottom through the float layer. Simultaneously, water is sprayed downwards onto the float layer. Dust particles in the gas come into contact with the moistened floats, which absorb and fuse some of the dust, causing them to rise. The floats collide back and forth between the upper and lower steel mesh, achieving irregular motion. Simultaneously, the airflow causes the floats to rotate and translate. The centrifugal force generated by the rotation of the floats throws the water mist on their surface, which has absorbed dust, outwards. The water mist continues to absorb dust from the airflow, which continues to rise. Guided by the guide plates between the primary and secondary dust collection chambers, the gas... The S-shaped flow guides the gas from the primary dust collection chamber to the secondary dust collection chamber. During this process, the gas velocity is significantly reduced. The dust-laden gas rises through the float layer in the secondary dust collection chamber, while simultaneously, the spray pipes spray water downwards onto the float layer. The dust in the gas comes into contact with the moistened floats, which absorb and fuse some of the dust, causing the floats to rise. The floats collide back and forth between the upper and lower steel mesh, achieving irregular motion. At the same time, the airflow causes the floats to translate and rotate. The centrifugal force generated by the rotation of the floats throws the water mist on their surface, which has absorbed dust, outwards. The water mist continues to absorb dust from the airflow. In this way, the fine dust is adsorbed and trapped by the secondary dust collection chamber at a very low flow velocity. Finally, the gas flows out through the adsorption filter layer at the outlet of the dust collection box.
[0010] This utility model sets up two-stage dust removal chambers inside the dust removal box. The first-stage dust removal chamber adsorbs and traps large dust particles. The guide plate between the first-stage and second-stage dust removal chambers reduces the gas flow rate. The second-stage dust removal chamber adsorbs and traps fine dust particles, ensuring the dust adsorption efficiency of the dust-laden gas. It has the advantages of reasonable design, high dust removal efficiency, energy saving and environmental protection. Attached Figure Description
[0011] The present invention will be further described below with reference to the accompanying drawings and embodiments.
[0012] Figure 1 This is a schematic diagram of the structure of this utility model;
[0013] Figure 2 This is a structural schematic diagram of the steel mesh of this utility model.
[0014] In the diagram, 1 is the fan, 2 is the dust collector, 3 is the primary dust collector, 4 is the secondary dust collector, 5 is the baffle plate, 6 is the float layer A, 7 is the spray pipe A, 8 is the return water pipe, 9 is the steel mesh A, 10 is the guide plate, 11 is the float layer B, 12 is the spray pipe B, 13 is the demister, 14 is the steel mesh B, and 15 is the adsorption filter layer. Detailed Implementation
[0015] like Figure 1 and Figure 2As shown, a two-stage countercurrent water film dust collector includes a fan 1 and a dust collection box 2. An adsorption filter layer 15 is provided at the outlet of the dust collection box 2. The dust collection box 2 is internally divided into a primary dust collection chamber 3 and a secondary dust collection chamber 4. A baffle plate 5 is provided at the lower part of the primary dust collection chamber 3 and the lower part of the secondary dust collection chamber 4, respectively. A float layer A6 and a spray pipe A7 are provided in the primary dust collection chamber 3, and a float layer B11 and a spray pipe B12 are provided in the secondary dust collection chamber 4. The float layer A6 is fixed by two upper and lower steel meshes A9, and the float layer B11 is fixed by two upper and lower steel meshes B14. A return water pipe 8 is provided at the bottom of the primary dust collection chamber 3 and the bottom of the secondary dust collection chamber 4, respectively. The float layer is composed of several PVC buoyancy balls. A guide plate 10 is provided between the primary dust collection chamber and the secondary dust collection chamber. The guide plate 10 guides the gas in an S-shape from the primary dust collection chamber 3 to the secondary dust collection chamber 4. A demister 13 is provided at the top of the secondary dust collection chamber. The return water pipes 8 of the primary dust removal chamber and the secondary dust removal chamber are connected to the external water filtration and circulation device.
[0016] In use, the fan delivers dust-laden gas into the dust collection chamber. Guided by the baffles in the primary dust collection chamber, the gas rises from the bottom through the float layer. Simultaneously, water is sprayed downwards onto the float layer. Dust particles in the gas come into contact with the moistened floats, which absorb and fuse some of the dust, causing them to rise. The floats collide back and forth between the upper and lower steel mesh, achieving irregular motion. Simultaneously, the airflow causes the floats to rotate and translate. The centrifugal force generated by the rotation of the floats throws the water mist on their surface, which has absorbed dust, outwards. The water mist continues to absorb dust from the airflow, which continues to rise. Guided by the guide plates between the primary and secondary dust collection chambers, the gas... The S-shaped flow guides the gas from the primary dust collection chamber to the secondary dust collection chamber. During this process, the gas velocity is significantly reduced. The dust-laden gas rises through the float layer in the secondary dust collection chamber, while simultaneously, the spray pipes spray water downwards onto the float layer. The dust in the gas comes into contact with the moistened floats, which absorb and fuse some of the dust, causing the floats to rise. The floats collide back and forth between the upper and lower steel mesh, achieving irregular motion. At the same time, the airflow causes the floats to translate and rotate. The centrifugal force generated by the rotation of the floats throws the water mist on their surface, which has absorbed dust, outwards. The water mist continues to absorb dust from the airflow. In this way, the fine dust is adsorbed and trapped by the secondary dust collection chamber at a very low flow velocity. Finally, the gas flows out through the adsorption filter layer at the outlet of the dust collection box.
Claims
1. A two-stage countercurrent water film dust collector comprising a fan and a dust removal tank, characterized in that The dust removal box is internally divided into a first dust removal chamber and a second dust removal chamber, a baffle is arranged at the lower part of the first dust removal chamber and the lower part of the second dust removal chamber respectively, a floating ball layer and a spraying pipe are arranged in the first dust removal chamber, a floating ball layer and a spraying pipe are arranged in the second dust removal chamber, the floating ball layer is fixed by upper and lower steel mesh, a backwater pipe is arranged at the bottom of the first dust removal chamber and the bottom of the second dust removal chamber respectively, a guide plate is arranged between the first dust removal chamber and the second dust removal chamber, the guide plate guides the gas in an S shape from the first dust removal chamber to the second dust removal chamber, and a mist eliminator is arranged at the top of the second dust removal chamber.
2. The two-stage countercurrent water film dust precipitator according to claim 1, characterized in that The floating ball layer is composed of a plurality of PVC buoyancy balls.
3. The two-stage countercurrent water film dust precipitator according to claim 1, characterized in that An adsorption filter layer is arranged at the outlet of the dust removal box.
4. The two-stage countercurrent water film dust precipitator according to claim 1, characterized in that The backwater pipes of the first dust removal chamber and the second dust removal chamber are connected with external water filtration and circulation devices.