Wet type negative pressure dust filter
Through a multi-stage dehydration structure, the problem of low dust removal efficiency in wet negative pressure dust filters has been solved, achieving high-efficiency dust removal and dust-free and water-free discharge.
Patent Information
- Application Number
- CN202520028042.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-07
- Publication Date
- 2025-12-12
- Estimated Expiration
- 2035-01-07
AI Technical Summary
Existing wet negative pressure dust filters have low dust removal efficiency, with water and dust escaping from the air outlet, incomplete separation, and poor dust removal effect.
It adopts a multi-stage dehydration structure, including a spray assembly, a mist breaker, a flow guide, a flow bypass, a dehydrator, and a water baffle. Through multi-stage treatment, it increases the contact area between water mist and dust and the swirling separation, ensuring that the gas is discharged without dust or water.
It significantly improves dust removal efficiency, prevents the carrying of tiny water droplets, and ensures enhanced dust removal performance.
Smart Images
Figure CN223654688U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of dust filter technology, specifically a wet negative pressure dust filter. Background Technology
[0002] Wet scrubbers primarily work by introducing dust-laden gas into the equipment body, where it combines with liquids such as water. Utilizing the principle of swirling collision between water mist and dust, the water mist and dust are mixed within the container. The resulting wastewater is discharged into a sedimentation tank, where the settled material can be collected for reuse, and the settled water can be recycled. Its advantages include significant dust removal efficiency, no easily damaged parts requiring secondary investment, and the ability to collect and reuse discharged materials, as well as the recycling of wastewater, saving costs.
[0003] The existing wet negative pressure dust collectors on the market still have some shortcomings: low dust removal efficiency, water and dust escaping from the outlet of the wet dust collector, incomplete separation, and poor dust removal effect. Utility Model Content
[0004] The purpose of this utility model is to address the shortcomings of existing technologies by proposing a wet negative pressure dust filter.
[0005] To achieve the above objectives, the present invention adopts the following technical solution: a wet negative pressure dust filter, including a base, an air inlet assembly for the dust filter connected to the upper end of the base, a spray assembly connected to the rear end of the air inlet assembly, a mist crusher connected to the rear end of the spray assembly, a primary drain outlet provided on the lower side of the mist crusher, a guide tube connected to the rear end of the mist crusher, a guide device provided inside the guide tube, a separation tube provided at the rear end of the guide device, a secondary drain outlet provided on the lower side of the separation tube, a flow bypass provided at the front section of the separation tube (i.e., the rear end of the guide device), a dehydrator provided in the middle section of the separation tube and the rear end of the flow bypass, a water baffle provided at the rear end of the dehydrator, a shock absorber provided at the rear end of the water baffle, and a centrifugal fan provided at the rear end of the shock absorber.
[0006] The flow guide includes a left-hand flow guide and a right-hand flow guide, and the dewatering device includes a right-hand dewatering device and a left-hand dewatering device. The right-hand dewatering device and the left-hand dewatering device include a front dewatering baffle, a middle dewatering baffle, a dewatering grid baffle, and a rear baffle.
[0007] As a further description of the above technical solution:
[0008] The spray assembly is located between the air inlet assembly and the mist breaker, and the mist breaker is located between the spray assembly and the guide tube.
[0009] As a further description of the above technical solution:
[0010] The flow guide is located on the front side of the separation cylinder and inside the flow guide cylinder.
[0011] As a further description of the above technical solution:
[0012] The flow diffuser, dewatering device, and water baffle are located inside the separation cylinder, and the flow guide cylinder is located in front of the separation cylinder. The shock absorber is fixedly connected to the rear end of the separation cylinder.
[0013] As a further description of the above technical solution:
[0014] The flow bypass is located at the front end of the dewatering device, the dewatering device is located between the flow bypass and the water baffle, and the water baffle is located at the rear end of the dewatering device.
[0015] As a further description of the above technical solution:
[0016] The separation cylinder is fixedly connected to the upper end of the base.
[0017] As a further description of the above technical solution:
[0018] The centrifugal fan is fixedly connected to the upper end of the base and is located at the rear end of the shock absorber.
[0019] This utility model has the following beneficial effects:
[0020] 1. Dust-laden gas enters the dust filter's inlet assembly through the ductwork and first passes through the spray assembly, which sprays out large water droplets. These droplets initially mix with the large dust particles. The mixed dust-laden water then settles and flows out through the primary drain outlet. Subsequently, the large water droplets pass through a mist breaker, which refines the large water droplets into smaller ones, increasing the contact area between the water droplets and the dust and improving the water-dust binding efficiency.
[0021] 2. Subsequently, small water droplets and dust-laden gas pass through a right-handed guide vane. This guide vane increases the wind speed and forms a vortex. The vortex then diffuses to the four walls of the separation cylinder. Some of the dust-laden water initially slides down to the four walls of the separation cylinder into the secondary drainage trough, while some flows at low speed to the dewatering device. At this time, the dewatering device is a left-handed dewatering grid, which creates a wind direction collision, causing the vast majority of the dust-laden water to flow into the secondary drainage trough. The remaining small portion of dust-laden water is completely blocked by the water baffle, forming a mixture of dust and water droplets that separates.
[0022] 3. The equipment is equipped with a multi-stage dehydration structure, including a dehydrator, a dehydration guide plate, and a water baffle. These structures work together to achieve multiple dehydration treatments of dust-laden water, ensuring that the final discharged gas is dust-free and water-free. The water baffle is specially designed so that the final tiny water particles settle and are discharged as the wind speed decreases, effectively preventing the carrying of tiny water droplets and further improving the dust removal effect. Attached Figure Description
[0023] Figure 1This is a schematic diagram of the structure of a wet negative pressure dust filter proposed in this utility model;
[0024] Figure 2 This is a partial structural diagram of a wet negative pressure dust filter proposed in this utility model. Figure 1 ;
[0025] Figure 3 This is a partial structural diagram of a wet negative pressure dust filter proposed in this utility model. Figure 2 ;
[0026] Figure 4 This is a partial structural diagram of a wet negative pressure dust filter proposed in this utility model. Figure 3 ;
[0027] Figure 5 This is a wind direction diagram for a wet negative pressure dust filter proposed in this utility model.
[0028] Legend:
[0029] 1. Air inlet assembly; 2. Spray assembly; 3. Mist breaker; 4. Primary drain outlet; 5. Flow guide tube; 6. Flow guide; 61. Left-handed flow guide; 62. Right-handed flow guide; 7. Separator; 8. Flow bypass; 9. Dehydrator; 91. Right-handed dehydrator; 92. Left-handed dehydrator; 911. Front dehydration baffle; 912. Middle dehydration baffle; 913. Dehydration grid baffle; 914. Rear baffle; 10. Water baffle; 11. Secondary drain outlet; 12. Shock absorber; 13. Centrifugal fan; 14. Base. Detailed Implementation
[0030] 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.
[0031] Reference Figures 1-5 This utility model provides a wet negative pressure dust filter, including: a base 14.
[0032] Specifically, the base 14 includes a dust collector air inlet assembly 1 connected to its upper end, a spray assembly 2 connected to its rear end, a mist disperser 3 connected to its rear end, a primary drain port 4 located on the lower side of the mist disperser 3, a guide tube 5 connected to the rear end of the mist disperser 3, a guide 6 located inside the guide tube 5, a separation tube 7 located at the rear end of the guide 6, a secondary drain port 11 located on the lower side of the separation tube 7, a flow bypass 8 located at the front end of the separation tube 7 (i.e., the rear end of the guide 6), and a flow bypass 8 located in the middle section of the separation tube 7. The device 8 is equipped with a dehydrator 9 at its rear end, a water baffle 10 at its rear end, a shock absorber 12 at its rear end, and a centrifugal fan 13 at its rear end. The flow guide 6 includes a left-hand flow guide 64 and a right-hand flow guide 62. The dehydrator 9 includes a right-hand dehydrator 91 and a left-hand dehydrator 92. The right-hand dehydrator 91 and the left-hand dehydrator 92 include a front dehydration baffle 911, a middle dehydration baffle 912, a dehydration grid baffle 913, and a rear baffle 914.
[0033] Dust-laden gas enters the dust filter inlet assembly 1 through the exhaust duct and first passes through the spray assembly 2, which sprays out large water droplets, initially mixing with the large dust particles. After mixing, the dust-laden water settles and flows out through the primary drain outlet 4. Subsequently, the large water droplets pass through the mist breaker 3, which refines the large water droplets into smaller ones, increasing the contact area between the water droplets and dust and improving the water-dust binding efficiency. Then, the small water droplets and dust-laden gas pass through the right-handed guide vane 6, which increases the air velocity to form a vortex. The vortex then diffuses to the four walls of the separator 7 through the diffuser 8. Some of the dust-laden water initially slides down the four walls of the separator 7 to the secondary drainage trough 11, while some flows at low speed to the dehydrator 9. At this time, the dehydrator 9 is a left-handed dehydration grid, creating a collision of air directions, causing the vast majority of the dust-laden water to flow out to the secondary drainage trough 11. The remaining small portion of dust-laden water is completely blocked by the baffle 10, resulting in the separation of the dust and water droplets.
[0034] Specifically, the spray assembly 2 is positioned between the air inlet assembly 1 and the mist disperser 3, and the mist disperser 3 is positioned between the spray assembly 2 and the guide tube 5. The guide tube 6 is positioned in front of the separator 7 and inside the guide tube 5. The flow diffuser 8, the dehydrator 9, and the water baffle 10 are positioned inside the separator 7, and the guide tube 5 is positioned in front of the separator 7. The shock absorber 12 is fixedly connected to the rear end of the separator 7. The flow diffuser 8 is positioned in front of the dehydrator 9, and the dehydrator 9 is positioned between the flow diffuser 8 and the water baffle 10. The water baffle 10 is positioned... At the rear end of the dehydrator 9, the separation cylinder 7 is fixedly connected to the upper end of the base 14, and the centrifugal fan 13 is fixedly connected to the upper end of the base 14. The centrifugal fan 13 is located at the rear end of the shock absorber 12. These structures work together to achieve multiple dehydration treatments of the dust-containing water, ensuring that the final discharged gas is dust-free and water-free. Through the special design of the water baffle 9, the final tiny water particles settle and are discharged as the wind speed decreases, effectively preventing the problem of carrying tiny water droplets and further improving the dust removal effect.
[0035] As a preferred implementation, the guide 6 is a right-handed high-speed airflow and the dewatering device 9 is a left-handed high-speed airflow, which creates a collision of air directions, allowing the water to completely detach from the main body and be discharged into the drainage tank.
[0036] As a preferred implementation method, a gravity-fed drainage structure is used through the provided secondary sewage outlets. When the water in the cylinder accumulates to a certain weight after the equipment is running, the water is drained. Only when the water in the separation cylinder accumulates to a certain weight can it effectively mix with the dust.
[0037] In a preferred embodiment, the dust-laden gas is diffused to the cylinder wall by the provided flow diffuser 8, and then blown to the guide plate on the front side of the dewatering device 9. After passing through the dewatering baffle, the dust-laden water is swirled to the lower drainage trough.
[0038] As a preferred implementation method, the water baffle 9 is designed to reduce wind speed from high to low, allowing the final tiny water particles to settle and be discharged.
[0039] In operation, dust-laden gas enters the dust filter's inlet assembly 1 through the exhaust duct and first passes through the spray assembly 2, which sprays out large-particle water mist, initially mixing with the large dust particles. The mixed water then settles and flows out through the primary drain outlet 4. Subsequently, the large-particle water mist passes through the mist breaker 3, which refines the large water mist particles into smaller ones, increasing the contact area between the water mist and dust and improving the water-dust binding efficiency. The smaller water mist particles and the dust-laden gas then pass through a right-handed guide tube. Device 6, this guide device accelerates the wind speed to form a swirling flow, which diffuses to the four walls of the separation cylinder 7 via the flow diffuser 8. Some of the dust-laden water initially slides down the four walls of the separation cylinder 7 to the secondary drainage trough 11, while some flows at low speed to the dewatering device 9. At this time, the dewatering device 9 is a left-handed dewatering grid, which creates a collision of wind directions, causing the vast majority of the dust-laden water to flow to the secondary drainage trough 11. The remaining small portion of dust-laden water is completely blocked by the water baffle 10, forming a mixture of dust and water mist that is then removed, resulting in the centrifugal fan 13 discharging air without dust or water.
[0040] This utility model provides a wet negative pressure dust filter that increases the contact area between water mist and dust, improving dust removal efficiency. The dust-laden water can be completely separated from the filter body and discharged into the drainage trough along a specific path, effectively avoiding the problem of secondary water carryover. The addition of a water baffle further prevents the carryover of tiny water droplets, further enhancing the dust removal effect.
[0041] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model 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 utility model should be included within the protection scope of the present utility model.
Claims
1. A wet negative pressure dust filter, characterized in that: Includes a base (14), the upper end of which is connected to a dust filter air inlet assembly (1), and the rear end of the air inlet assembly (1) is connected to a spray assembly (2), the rear end of the spray assembly (2) is connected to a mist crusher (3), and the lower side of the mist crusher is provided with a primary sewage outlet (4), while the rear end of the mist crusher (3) is connected to a guide tube (5), the guide tube (5) is provided with a guide (6), the rear end of the guide (6) is provided with a separation tube (7), the lower side of the separation tube (7) is provided with a secondary sewage outlet (11), the front section of the separation tube (7) and the rear end of the guide (6) are provided with a flow bypass (8), the middle section of the separation tube (7) and the rear end of the flow bypass (8) are provided with a dehydrator (9), the rear end of the dehydrator (9) is provided with a water baffle (10), the rear end of the water baffle (10) is provided with a shock absorber (12), and the rear end of the shock absorber (12) is provided with a centrifugal fan (13). The flow guide (6) includes a left-hand flow guide (61) and a right-hand flow guide (62), and the dewatering device (9) includes a right-hand dewatering device (91) and a left-hand dewatering device (92). The right-hand dewatering device (91) and the left-hand dewatering device (92) include a front dewatering baffle (911), a middle dewatering baffle (912), a dewatering grid baffle (913), and a rear baffle (914).
2. The wet negative pressure dust filter according to claim 1, characterized in that: The spray assembly (2) is disposed between the air inlet assembly (1) and the mist breaker (3), and the mist breaker (3) is disposed between the spray assembly (2) and the guide tube (5).
3. A wet negative pressure dust filter according to claim 2, characterized in that: The flow guide (6) is located on the front side of the separation cylinder (7) and inside the flow guide cylinder (5).
4. A wet negative pressure dust filter according to claim 3, characterized in that: The flow deflector (8), dewaterer (9) and water baffle (10) are located inside the separator (7), and the flow guide (5) is located in front of the separator (7). The shock absorber (12) is fixedly connected to the rear end of the separator (7).
5. A wet negative pressure dust filter according to claim 4, characterized in that: The flow bypass (8) is located at the front end of the dewatering device (9), the dewatering device (9) is located between the flow bypass (8) and the water baffle (10), and the water baffle (10) is located at the rear end of the dewatering device (9).
6. A wet negative pressure dust filter according to claim 5, characterized in that: The separation cylinder (7) is fixedly connected to the upper end of the base (14).
7. A wet negative pressure dust filter according to claim 6, characterized in that: The centrifugal fan (13) is fixedly connected to the upper end of the base (14), and the centrifugal fan (13) is located at the rear end of the shock absorber (12).