Dust removal device for mine construction
By adopting a ring-shaped spray hood and inclined spray holes in the dust removal device used in mine construction, the problems of water pipe wear and airflow obstruction were solved, achieving efficient dust removal and system stability.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- PINGDINGSHAN COAL SHENMA CONSTR ENG GRP MINE CONSTR ENG CO LTD
- Filing Date
- 2025-04-14
- Publication Date
- 2026-05-15
AI Technical Summary
The water spray pipes of traditional wet dust collectors used in mine construction are easily worn down by dust, and the horizontal arrangement of the water spray pipes obstructs airflow, affecting dust removal efficiency and system stability.
The design adopts a ring-shaped spray hood, with the spray holes set at an angle and spraying circumferentially along the dust movement path. Combined with the guide net and flange connection, it ensures that the water spray pipe is in full contact with the dust and reduces wear.
This reduces wear on the water spray pipes, improves dust conveying efficiency and overall performance of the dust collector, and ensures stable operation of the dust removal system.
Smart Images
Figure CN224236422U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of dust removal technology in mines, and in particular to a dust removal device for mine construction. Background Technology
[0002] In mine construction, wet scrubbers are widely used for dust control. They work by spraying water mist into the dust-laden airflow, causing dust particles to wet, agglomerate, and settle, thus purifying the air. Traditional mine wet scrubbers typically employ a combination of a primary and a secondary dust collector. The primary dust collector has a dust collection spray unit at its inlet, which performs initial dust removal through water mist spraying. However, in existing technologies, the spray pipes in the dust collection spray unit are usually straight pipes, positioned perpendicular to the direction of dust airflow, i.e., perpendicular to the axis of the primary dust collector.
[0003] This arrangement presents several problems: First, the water spray pipes are susceptible to wear and tear from dust. Because the pipes are positioned perpendicular to the dust-laden airflow, high-speed dust particles continuously impact the pipe surface, leading to accelerated wear, shortening the pipe's lifespan, and increasing maintenance costs. Second, it hinders normal dust transport. The transverse arrangement of the water spray pipes obstructs the dust-laden airflow, affecting its smooth flow, reducing dust removal efficiency, and potentially causing localized dust accumulation, thus impacting the stable operation of the dust collection system.
[0004] Therefore, there is an urgent need for a dust removal device for mine construction with an optimized spray unit structure design to reduce the scouring and wear of the water spray pipes by dust, while ensuring the smooth transport of dust-laden airflow and improving the overall performance and reliability of the dust collector. Utility Model Content
[0005] The purpose of this invention is to provide a dust removal device for mine construction. By optimizing the design of the spray unit, the scouring and wear of the water spray pipe by dust can be reduced, while ensuring the smooth transport of dust-laden airflow and improving the overall performance and reliability of the dust collector.
[0006] The present invention adopts the following technical solution:
[0007] A dust removal device for mine construction includes a primary dust collector cylinder. A dust collection spray unit is installed at the inlet end of the primary dust collector cylinder. A secondary dust collector cylinder is conductively connected to the outlet end of the primary dust collector cylinder. A dewatering tank is conductively connected to the bottom of the secondary dust collector cylinder. The dust collection spray unit includes an annular spray hood coaxially disposed within the primary dust collector cylinder. An annular spray chamber is disposed within the annular spray hood. Multiple spray holes communicating with the spray chamber are formed along the circumferential direction on the inner wall of the annular spray hood. A water inlet communicating with the spray chamber is provided on the annular spray hood. The water inlet is connected to a water pipe disposed on the primary dust collector cylinder.
[0008] Preferably, the spray nozzles are inclined toward the direction of dust movement.
[0009] Preferably, a mesh cover is provided inside the spray hole.
[0010] Preferably, the outer diameter of the spray hood matches the inner diameter of the primary dust collector cylinder.
[0011] Preferably, the spray hood is provided with a flow guide net.
[0012] Preferably, the guide net is located inside the spray hole.
[0013] Preferably, a convex ring is provided on the inner side of the spray hood, the diameter of the convex ring is smaller than the diameter of the spray hood, and the guide net is provided at the end of the convex ring away from the spray hood; a drain port is provided on the convex ring.
[0014] Preferably, the drain outlet is located at the bottom of the convex ring.
[0015] Preferably, flanges are provided on the outside of the spray hood and at the inlet end of the primary dust collector, and the two flanges are connected by bolts.
[0016] Compared with the prior art, the beneficial effects of this utility model are as follows: By setting a spray chamber inside the spray hood and setting spray holes inside the spray hood that communicate with the spray chamber, this utility model can achieve circumferential spraying on the dust movement path during the dust removal process. This not only ensures the effect of wetting, agglomerating and settling of dust particles, but also reduces the erosion and corrosion caused by dust to the spray structure during the dust movement process, and realizes the smooth transportation of dust into the primary dust collector, thereby improving the efficiency of dust removal. Attached Figure Description
[0017] Figure 1 This is a schematic diagram of the structure of an embodiment of this application;
[0018] Figure 2 This is a schematic diagram of the structure of the spray hood in an embodiment of this application;
[0019] Figure 3 This is a cross-sectional view of the spray hood in an embodiment of this application. Detailed Implementation
[0020] The present invention will now be described clearly and completely with reference to the accompanying drawings and embodiments:
[0021] like Figures 1 to 3As shown, the dust removal device for mine construction described in this utility model includes a primary dust collector 1, with guide vanes installed inside the primary dust collector 1. The guide vanes are driven by a drive motor, and a protective shell is provided outside the drive motor. Vortex vanes are provided on the protective shell. A dust collection spray unit is provided at the inlet end of the primary dust collector 1, and a secondary dust collector 2 is conductively connected to the outlet end of the primary dust collector 1. A vortex dust removal unit and a sewage discharge and dewatering unit are provided inside the secondary dust collector 2, and a dewatering tank 3 is conductively connected to the sewage discharge and dewatering unit inside the secondary dust collector 2. Since the above structures are all conventional internal structures of wet vortex dust collectors in the prior art, and the working principle is well known to those skilled in the art, this part will not be described in detail.
[0022] Specifically, the dust collection spray unit in this embodiment includes an annular spray hood 4 coaxially disposed inside the primary dust collector 1. An annular spray chamber 5 is disposed inside the annular spray hood 4. Multiple spray holes 6 communicating with the spray chamber 5 are opened on the inner wall of the annular spray hood 4 along the circumferential direction. A water inlet 7 communicating with the spray chamber 5 is disposed on the annular spray hood 4. The water inlet 7 is connected to a water pipe 8 disposed on the primary dust collector 1. The water pipe 8 is connected to an external water source. In specific connection, conventional structural components such as flow meters, electric contact pressure gauges, solenoid valves and booster pumps are usually disposed on the water pipe 8. During operation, the rotation of the guide vanes draws external dust into the primary dust collector 1. The dust passes through the middle of the spray hood 4 located at the end of the primary dust collector 1. Simultaneously, the booster pump is activated, allowing water to enter the spray chamber 5 and be sprayed out through the spray holes 6. The spray holes 6 spray in a circular motion along the direction of dust movement, ensuring full contact with the dust and guaranteeing the effects of wetting, agglomerating, and settling the dust particles. Furthermore, since the spray structure of this application is located in the circumferential direction outside the dust movement path, it reduces the scouring caused by dust and avoids the obstruction of dust movement caused by the vertical placement of the water spray pipes along the dust movement path in the prior art, ensuring smooth dust movement and improving dust removal efficiency.
[0023] Furthermore, each spray hole 6 is inclined towards the direction of dust movement, which not only achieves spray contact with the dust but also provides a certain driving force for the dust movement through oblique spraying, reducing the resistance to dust movement caused by vertical spraying and helping the sprayed dust particles to move smoothly backward. Each spray hole 6 is equipped with a mesh cover 13, which helps to disperse the sprayed water, expanding the coverage area after spraying and improving the binding effect of water and dust.
[0024] Furthermore, in this embodiment, the outer diameter of the spray hood 4 matches the inner diameter of the primary dust collector 1 to ensure a tight connection between the two, allowing dust to pass through the middle of the spray hood 4 and preventing dust from entering the gap between the spray hood 4 and the primary dust collector 1. For easy installation and disassembly of the primary dust collector 1 and the spray hood 4, flanges 9 are provided on both the outer side of the spray hood 4 and the inlet end of the primary dust collector 1. The outer diameter of both flanges 9 is larger than the diameter of the ends of the spray hood 4 and the primary dust collector 1, allowing dust to pass smoothly through the middle of the spray hood 4. The two flanges 9 are connected by bolts. A guide net 10 is also provided on the spray hood 4, which disperses the dust entering the primary dust collector 1, ensuring that the dust enters the primary dust collector 1 evenly. The guide net 10 is located inside the spray hole 6, that is, on the side of the spray hole 6 away from the dust inlet. This setting can not only homogenize and disperse the dust entering the primary dust collector 1, but also allow some of the sprayed water to act on the guide net 10 to wash it during operation by utilizing the inclined setting of the spray hole 6, thus preventing dust from accumulating and adhering on the guide net 10 and affecting the efficiency of dust passage.
[0025] Furthermore, a convex ring 11 is provided on the inner side of the spray hood 4. The diameter of the convex ring 11 is smaller than the diameter of the spray hood 4. The guide net 10 is located at the end of the convex ring 11 away from the spray hood 4. A drain port 12 is provided on the convex ring 11, and the drain port 12 is preferably located at the bottom of the convex ring 11. The reduced diameter of the convex ring 11 and the opening of the drain port 12 help to discharge the wastewater containing solid particles cleaned from the guide net 10 into the subsequent dust collector. As the equipment is running, it is transported to the dewatering tank 3, which avoids the wastewater from failing to be discharged from the guide net 10 in time and flowing back to the outside of the primary dust collector 1, causing secondary pollution of the construction environment.
[0026] This invention optimizes the existing water spray pipe, which is positioned perpendicular to the dust movement direction, into a circular spray hood 4. A spray chamber 5 is opened inside the spray hood 4, and spray holes 6, which are connected to the spray chamber 5, are provided on the inner wall of the spray hood 4. This enables circumferential spraying along the dust conveying path. While ensuring the effects of wetting, agglomerating, and settling dust particles, it reduces the scouring caused by dust and avoids the obstruction of dust movement caused by the vertical dust movement path of the water spray pipe in the existing technology. This ensures the smooth movement of dust and improves dust removal efficiency.
Claims
1. A dust removal device for mine construction, comprising a primary dust collector, wherein a dust collection spray unit is provided at the inlet end of the primary dust collector, a secondary dust collector is conductively connected to the outlet end of the primary dust collector, and a dewatering tank is conductively connected to the bottom of the secondary dust collector, characterized in that: The dust collection spray unit includes an annular spray hood coaxially disposed inside the primary dust collector cylinder. An annular spray chamber is disposed inside the annular spray hood. Multiple spray holes communicating with the spray chamber are opened on the inner wall of the annular spray hood along the circumferential direction. A water inlet communicating with the spray chamber is disposed on the annular spray hood. The water inlet is connected to a water pipe disposed on the primary dust collector cylinder.
2. The dust removal device for mine construction according to claim 1, characterized in that: The spray nozzles are inclined toward the direction of dust movement.
3. The dust removal device for mine construction according to claim 2, characterized in that: A mesh cover is installed inside the spray hole.
4. The dust removal device for mine construction according to claim 1, characterized in that: The outer diameter of the spray hood matches the inner diameter of the primary dust collector cylinder.
5. The dust removal device for mine construction according to claim 4, characterized in that: The spray hood is equipped with a flow guide net.
6. The dust removal device for mine construction according to claim 5, characterized in that: The flow guide net is located inside the spray hole.
7. The dust removal device for mine construction according to claim 6, characterized in that: The inner side of the spray hood is provided with a convex ring, the diameter of which is smaller than the diameter of the spray hood, and the guide net is provided at the end of the convex ring away from the spray hood; a drain port is provided on the convex ring.
8. The dust removal device for mine construction according to claim 7, characterized in that: The drain outlet is located at the bottom of the convex ring.
9. The dust removal device for mine construction according to claim 1, characterized in that: Flanges are provided on the outside of the spray hood and at the inlet end of the primary dust collector, and the two flanges are connected by bolts.