A dust suppression technology for the reuse of coal-containing wastewater on large-flow conveyor belts
By designing a technology that uses water treated with coal-containing wastewater for spraying and dust suppression, the problem of difficult dust suppression in large flow conveyor belts is solved, effective dust suppression and resource reuse are achieved, and the difficulty of equipment technical transformation is reduced.
Patent Information
- Application Number
- CN202421475918.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-26
- Publication Date
- 2025-04-01
- Estimated Expiration
- 2034-06-26
AI Technical Summary
With high belt speed, large conveyor volume and inferior coal quality, existing dry fog dust suppression facilities cannot effectively suppress the outflow and spread of dust, resulting in dust spreading throughout the corridor and difficult equipment technical transformation.
A coal-containing wastewater reuse and dust suppression technology is designed. The water treated by the coal-containing wastewater treatment station reaches the upper part of the conveyor belt through the main spraying pipeline and branch pipes, and directly acts on the dust flying and impacting overflow positions through the spiral dust suppression spray head to achieve dust suppression effect. This system realizes automatic spraying and dust suppression of coal flow induction through the cooperation of infrared closed proximity switch and pneumatic valve.
It effectively suppresses the flying of the guide trough and dust along the line, reduces the dust concentration in the corridor, avoids dust explosion and fire hazards, and makes full use of coal-containing wastewater resources, making the system simple and easy to install.
Smart Images
Figure CN222699580U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of coal transportation, in particular to a dust suppression technology for recycling coal-containing wastewater in a large-flow conveyor belt. Background Art
[0002] At present, most of the coal transportation systems in the market use dry fog dust suppression facilities. However, for conveyor belts with high belt speed, large conveying volume and poor quality coal, the dry fog dust suppression system cannot effectively suppress the dust, causing the dust to continuously rush out of the dust suppression collision zone and then spread to the entire corridor. At present, for conveyor belts with high belt speed and large conveying volume in the market, only roller conveyor belts can be used, but such conveyor belts are expensive and difficult to modify in operation.
[0003] Because the coal transported by the truck is self-contained by the power plant, the incoming coal is relatively diversified, and the amount of coal powder carried by the coal is large, accounting for more than 30% of each ton of coal powder. The conveyor belt guide chute dust collector and dry fog dust suppression cannot meet all the coal powder suppression needs. The remaining uncontrollable coal powder is transported by belt speed and spreads to the entire closed corridor. In order to deal with this problem, it is difficult to carry out technical transformation of the operating equipment, which is not convenient for implementation. Therefore, a dust suppression technology for the reuse of coal-containing wastewater on large-flow conveyor belts is needed. Utility Model Content
[0004] The technical problem to be solved by the utility model is that the powder content of coal per unit of coal demand is large, and the dust generated by a large-flow conveyor belt cannot be effectively suppressed. A dust suppression technology for the reuse of coal-containing wastewater from a large-flow conveyor belt is provided.
[0005] In order to solve the above technical problems, the technical solution provided by the utility model is: a dust suppression technology for the reuse of coal-containing wastewater on a large-flow conveyor belt, including a conveyor belt main body and a spray main line, the conveyor belt main body is provided with a material guide trough, the water inlet of the spray main line is connected to a coal-containing wastewater treatment station, a plurality of branch pipes extending to the top of the conveyor belt main body are evenly arranged on the spray main line, a spiral dust suppression mist nozzle is rotatably provided at the top of the branch pipe, a pneumatic valve close to the material guide trough is provided on the spray main line, a coal drop pipe is provided in the material guide trough, an air lock body is provided in the coal drop pipe, an air lock counterweight rod cooperating with the air lock body is provided outside the coal drop pipe, an infrared closed proximity switch close to the air lock counterweight rod is provided in the material guide trough, and the infrared closed proximity switch is connected with the pneumatic valve.
[0006] As an improvement, the spiral dust suppression mist nozzles are distributed inside and along the material guide trough outlet direction, and adjacent spiral dust suppression mist nozzles are spaced 30m apart, thereby achieving dust suppression for the entire conveyor belt and directly acting on the dust flying and impact overflow positions.
[0007] As an improvement, the spiral dust suppression mist nozzle uses a 4-point nozzle, which can match the system pressure mist function.
[0008] As an improvement, a manual ball valve for a spiral mist nozzle branch is fixedly provided at one end of the branch pipe away from the spiral dust suppression spiral mist nozzle. The water volume is manually adjusted by using each manual ball valve for a spiral mist nozzle branch to avoid exceeding the moisture content of the coal.
[0009] Compared with the prior art, the utility model has the following advantages: the dust suppression spray water used by the device is taken from the coal-containing wastewater treatment station, so as to achieve the effect of recycling the coal-containing wastewater and make full use of resources;
[0010] The infrared closed proximity switch controls the pneumatic valve switch, and cooperates with the air lock body to realize coal flow sensing automatic spray dust suppression, effectively suppressing dust in the material guide trough and along the line, making the overall system of the device simple and easy to install. BRIEF DESCRIPTION OF THE DRAWINGS
[0011] Figure 1 The utility model is a structural schematic diagram of a dust suppression technology for recycling coal-containing wastewater on a large-flow conveyor belt.
[0012] As shown in the figure: 1. Conveyor belt body; 2. Spray main line; 3. Material guide trough; 4. Coal-containing wastewater treatment station; 5. Branch pipe; 6. Spiral dust suppression mist nozzle; 7. Pneumatic valve; 8. Coal drop pipe; 9. Air lock body; 10. Air lock counterweight rod; 11. Infrared closed proximity switch; 12. Manual ball valve for the mist nozzle branch. DETAILED DESCRIPTION
[0013] The utility model is further described in detail below in conjunction with the accompanying drawings.
[0014] Combined with Figure 1 As shown, a dust suppression technology for recycling coal-containing wastewater from a large-flow conveyor belt includes a conveyor belt body 1 and a spray main line 2. The conveyor belt body 1 is provided with a material guide trough 3. The water inlet of the spray main line 2 is connected to a coal-containing wastewater treatment station 4. This system uses the wastewater after flushing the coal conveying system to achieve auxiliary dust suppression measures. The water quality of the water treatment meets the particle size requirement of less than 600 mesh, and the system pressure should meet 1.0 MPa.
[0015] The spray main line 2 is evenly provided with a plurality of branch pipes 5 extending to the top of the conveyor belt body 1. The spray main line 2 is arranged with a φ50 seamless steel pipe, and the branch pipe 5 is configured with a φ25 seamless steel pipe. A spiral dust suppression rotary mist nozzle 6 is rotatably provided at the top of the branch pipe 5. A rotary mist nozzle branch manual ball valve 12 is fixed at one end of the branch pipe 5 away from the spiral dust suppression rotary mist nozzle 6. The spiral dust suppression rotary mist nozzle 6 uses a 4-split nozzle. The spiral dust suppression rotary mist nozzle 6 is divided into four parts inside and along the outlet direction of the guide trough 3. And the adjacent spiral dust suppression mist spray heads 6 are spaced 30m apart, the main spray line 2 is provided with a pneumatic valve 7 close to the material guide trough 3, the pneumatic valve 7 is a DN50 pneumatic valve 7, the material guide trough 3 is provided with a coal drop pipe 8, the coal drop pipe 8 is provided with an air lock body 9, the coal drop pipe 8 is provided with an air lock counterweight rod 10 matched with the air lock body 9, the material guide trough 3 is provided with an infrared closed proximity switch 11 close to the air lock counterweight rod 10, the infrared closed proximity switch 11 is connected with the pneumatic valve 7;
[0016] Through the above structure, the equipment is first assembled and installed, and the water inlet end of the spray main line 2 is connected to the coal-containing wastewater treatment station 4. When in use, the stable pressure inside the main pipeline is utilized, and the coal flow hits the air lock through the coal drop pipe 8. The air lock counterweight rod 10 leaves the infrared closed proximity switch 11, and the infrared closed proximity switch 11 opens the pneumatic valve 7. Then the dust suppression water is transported to each branch pipe 5 through the spray main line 2, and directly acts on the dust flying and impact overflow position through the spiral dust suppression mist nozzle 6 to achieve the dust reduction function; and before use, the manual ball valve 12 of each mist nozzle branch is used to manually adjust the water volume to avoid the occurrence of excessive water content in the coal quality.
[0017] During the specific implementation of the utility model, the water inlet end of the spray main line 2 is first connected to the coal-containing wastewater treatment station 4. When in use, the stable pressure inside the main pipeline is utilized to cause the coal flow to hit the air lock through the coal drop pipe 8, and the air lock counterweight rod 10 leaves the infrared closed proximity switch 11. The infrared closed proximity switch 11 opens the pneumatic valve 7. Subsequently, the dust suppression water is transported to each branch pipe 5 through the spray main line 2, and directly acts on the dust flying and impact overflow position through the spiral dust suppression mist nozzle 6, so as to realize the dust reduction function, effectively suppress the dust concentration inside the corridor, and avoid the occurrence of hidden dangers such as dust explosion and fire.
[0018] Before use, the water volume is manually adjusted using the manual ball valve 12 of each rotary spray nozzle branch to avoid excessive water content in the coal.
[0019] The above description of the utility model and its implementation methods is not restrictive. The drawings show only one implementation method of the utility model, and the actual structure is not limited thereto. In short, if ordinary technicians in this field are inspired by it and design structural methods and embodiments similar to the technical solution without creativity without departing from the purpose of the invention of the utility model, they should all fall within the protection scope of the utility model.
Claims
1. A dust suppression technology for recycling coal-containing wastewater from a large-flow conveyor belt, comprising a conveyor belt body (1) and a spray main line (2), characterized in that: The conveyor belt body (1) is provided with a material guide trough (3), the water inlet of the spray main line (2) is connected to a coal-containing wastewater treatment station (4), the spray main line (2) is evenly provided with a plurality of branch pipes (5) extending to the top of the conveyor belt body (1), the top of the branch pipe (5) is rotatably provided with a spiral dust suppression mist nozzle (6), the spray main line (2) is provided with a pneumatic valve (7) close to the material guide trough (3), a coal drop pipe (8) is provided in the material guide trough (3), a gas lock body (9) is provided in the coal drop pipe (8), a gas lock counterweight rod (10) matched with the gas lock body (9) is provided outside the coal drop pipe (8), an infrared closed proximity switch (11) close to the gas lock counterweight rod (10) is provided in the material guide trough (3), and the infrared closed proximity switch (11) is matched with the pneumatic valve (7).
2. According to claim 1, a dust suppression technology for recycling coal-containing wastewater from a large conveyor belt is characterized by: The spiral dust suppression mist spray heads (6) are located inside and along the outlet direction of the material guide trough (3), and adjacent spiral dust suppression mist spray heads (6) are spaced 30 m apart.
3. According to claim 1, a dust suppression technology for recycling coal-containing wastewater from a large conveyor belt is characterized by: The spiral dust suppression mist spray nozzle (6) is a 4-point nozzle.
4. The dust suppression technology for recycling coal-containing wastewater from large-flow conveyor belts according to claim 1 is characterized by: A manual ball valve (12) for branching the spiral dust suppression mist spray nozzle is fixedly provided at one end of the branch pipe (5) away from the spiral dust suppression mist spray nozzle (6).