Wet-type electric precipitation spraying sewage recycling system
By introducing a stirring sedimentation unit and a pumping control unit into the wet electrostatic precipitator system, the wastewater in the sewage tank can be recycled, which solves the problem of poor spraying effect caused by sludge sedimentation, improves the dust removal effect and reduces material loss and pollution.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- BEIJING RUIDA HONGXIN TECH CO LTD
- Filing Date
- 2025-04-27
- Publication Date
- 2026-05-15
AI Technical Summary
In existing wet electrostatic precipitators, sludge sedimentation in the wastewater tank leads to a reduction in tank volume and a decrease in spraying efficiency. Traditional cleaning methods are cumbersome and may cause pollution within the plant.
By using a stirring and sedimentation unit and a pumping and control unit in the sewage tank, sewage is directly supplied to the sintering mixer. Combined with an overflow valve and circulation pipeline, sewage can be recycled, reducing sludge treatment steps and preventing sludge sedimentation.
It improves the spraying and dust removal effects, reduces sludge treatment work, reduces material loss, avoids pollution within the plant, and simplifies operation and maintenance.
Smart Images
Figure CN224237678U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of industrial dust removal technology, and in particular to a wet electrostatic precipitator spray wastewater recycling system. Background Technology
[0002] The wastewater from wet electrostatic precipitator spraying mainly originates from the wastewater generated by dust removal within the electrostatic precipitator spraying chamber. This wastewater contains material dust generated during the conveyor belt transport of sintering batching materials. During the operation of the electrostatic precipitator, material dust in the wastewater tank settles at the bottom. Over time, the sludge at the bottom of the tank continuously increases, reducing the capacity of the wastewater tank and decreasing the amount of usable clean water in the spraying system, thus worsening the spraying effect and consequently reducing the dust removal efficiency of the electrostatic precipitator.
[0003] Existing technologies for treating sludge in wastewater ponds include methods such as using excavators in conjunction with transport vehicles for cleaning, and using sludge presses for cleaning. These traditional cleaning methods are cumbersome to operate, have high site requirements (the site must have sufficient space for vehicles to operate safely), and the cleaned sludge needs to be transported and processed again, which may cause pollution on the factory roads. Utility Model Content
[0004] To address the problems existing in the prior art, this utility model provides a wet electrostatic precipitator spray wastewater recycling system.
[0005] The wet electrostatic precipitator spray wastewater recycling system provided by this utility model adopts the following technical solution:
[0006] A wet electrostatic precipitator spray wastewater recycling system includes a wastewater tank, a stirring and sedimentation unit installed in the wastewater tank, a conveying pipeline connected to the wastewater tank, a pumping control unit installed on the conveying pipeline, the pumping control unit including a mud pump and matching valves, a conveying pipeline connected to the output end of the conveying pipeline, a second conveying pipeline connected to the output end of the second conveying pipeline, and matching valves installed on the second conveying pipeline.
[0007] By adopting the above technical solution, the wastewater after dust removal spraying in this utility model is used by the mixing machine. After using clean water, the dust removal spraying effect is better, the anode and cathode of the electrostatic precipitator are cleaner, the dust removal effect is better, the sludge treatment step in the wastewater is reduced, the subsequent sludge treatment work is avoided, and the loss of materials caused by dust during the belt transportation after batching is reduced. The dusty material is mixed into the sintering material of the mixing machine with the wastewater, reducing material loss.
[0008] Optionally, a circulation pipe is connected to the second conveying pipe via a tee. An overflow valve and matching valves are installed on the circulation pipe, and the output end of the circulation pipe is connected to the sewage tank.
[0009] By adopting the above technical solution, when the mixing machine does not require water supply, the valve on the second conveying pipeline is closed. At this time, the pressure in the second conveying pipeline and the circulation pipeline increases. When the pressure in the pipeline exceeds the set pressure of the overflow valve, the overflow valve automatically opens, and the sewage flows back to the sewage tank along the circulation pipeline. When the mixing machine needs water supply again, the valve is opened, the pressure in the second conveying pipeline decreases, and when it is lower than the set pressure of the overflow valve, the overflow valve automatically closes, thereby continuing to supply water to the mixing machine.
[0010] Optionally, at least two conveying pipelines are connected in parallel, and each conveying pipeline is equipped with a set of conveying pump control units. The conveying ends of multiple conveying pipelines are connected to conveying pipelines two through branch fittings.
[0011] By adopting the above technical solution, one component is kept in reserve, so if one component has a problem, it will not affect the normal use of the whole system, which facilitates operation and maintenance.
[0012] Optionally, a bottom valve is installed at the connection between the conveying pipeline and the sewage tank, and the bottom valve is located inside the sewage tank.
[0013] By adopting the above technical solution, the bottom valve can effectively prevent liquid backflow, ensuring that the conveying pipeline is always full of liquid, avoiding the mud pump from running dry or being damaged when it starts due to the lack of liquid in the pipeline. In addition, the filter screen of the bottom valve can prevent debris in the sewage tank from entering the conveying pipeline, reducing the risk of mud pump damage.
[0014] Optionally, the stirring sedimentation unit includes a drive motor, a reducer connected to the drive motor, a transmission shaft connected to the reducer, a rotating shaft connected to the transmission shaft, and stirring blades for stirring the wastewater mounted on the rotating shaft.
[0015] By adopting the above technical solution, the drive motor transmits power to the stirring blades in sequence through the reducer, transmission shaft and rotating shaft, so as to drive the stirring blades to stir the sewage and prevent sludge from settling and caking.
[0016] Optionally, the agitator blades are cross-shaped.
[0017] By adopting the above technical solution, the cross-shaped frame is easy to process and manufacture, and its performance is good.
[0018] Optionally, a grating platform is installed on the top of the sewage tank, and the reducer is fixed to the grating platform by a frame.
[0019] By adopting the above technical solutions, the grating platform, as an installation and protection platform, has achieved good results.
[0020] Optionally, a liquid level sensor is installed in the wastewater tank.
[0021] By adopting the above technical solution, the liquid level sensor is used to detect the sewage level. When the water level in the sewage tank is too high, the dust removal system is prohibited from spraying the dust removal box to avoid the sewage tank overflowing.
[0022] Optionally, a pressure transmitter is installed on the second conveying pipeline.
[0023] By adopting the above technical solution, the pressure transmitter is used to detect the pressure inside the pipeline.
[0024] Optionally, an electromagnetic flow meter is installed on the second conveying pipeline.
[0025] By adopting the above technical solution, the electromagnetic flowmeter is used to measure the amount of water transported by the mud pump. Attached Figure Description
[0026] Figure 1 This is a schematic diagram of the structure of a wet electrostatic precipitator spray wastewater recycling system according to an embodiment of this utility model.
[0027] Figure 2 This is a schematic diagram of the structure of the stirring and settling unit in an embodiment of this utility model.
[0028] Figure 3 This is a schematic diagram of the structure of the stirring blade in an embodiment of the present invention.
[0029] Explanation of reference numerals in the attached drawings: 1. Wastewater tank; 10. Grating platform; 11. Bottom valve; 12. Liquid level sensor; 2. Stirring and sedimentation unit; 20. Drive motor; 21. Reducer; 22. Frame; 23. Plum blossom type coupling; 24. Drive shaft; 25. HE coupling; 26. Rotating shaft; 27. Stirring blade; 3. Conveying pipeline one; 4. Pumping control unit; 40. Slurry pump; 41. Flexible connection; 42. Electric valve one; 43. Manual valve one; 5. Conveying pipeline two; 50. Pressure transmitter; 51. Manual valve two; 52. Electric valve two; 53. Electromagnetic flow meter; 6. Circulation pipeline; 60. Manual valve three; 61. Overflow valve. Detailed Implementation
[0030] The following is in conjunction with the appendix Figure 1 -Appendix Figure 3 The present invention will be described in further detail below.
[0031] This utility model discloses a wet electrostatic precipitator spray wastewater recycling system. (Refer to...) Figure 1 A wet electrostatic precipitator spray wastewater recycling system includes a wastewater tank 1, which is an electrostatic precipitator spray wastewater tank. The top of the wastewater tank 1 is covered with a grating platform 10, which serves as an installation and protection platform. A stirring and sedimentation unit 2 is installed on the grating platform 10 and suspended vertically inside the wastewater tank 1.
[0032] Reference Figure 1 and Figure 2 The stirring sedimentation unit 2 includes a drive motor 20, the output end of which is connected to a reducer 21. The reducer 21 is fixed on the grid plate platform 10 via a frame 22. The output end of the reducer 21 is connected to a drive shaft 24 via a plum blossom-shaped coupling 23 located inside the frame 22. The drive shaft 24 is connected to a rotating shaft 26 via a HE coupling 25.
[0033] Reference Figure 2 and Figure 3 Two stirring blades 27 are installed on the rotating shaft 26, arranged vertically. In this embodiment, the stirring blades 27 adopt a cross-shaped frame, and the two stirring blades 27 are spaced 800mm apart. The drive motor 20 transmits power to the stirring blades 27 in sequence through the reducer 21, the plum blossom coupling 23, the transmission shaft 24, the HE coupling 25 and the rotating shaft 26, so as to drive the stirring blades 27 to stir the sewage and prevent the sludge from settling and caking.
[0034] Reference Figure 1 The sewage tank 1 is connected to a conveying pipe 3. A pumping control unit 4 is installed on the conveying pipe 3. The pumping control unit 4 includes a mud pump 40 installed on the ground next to the sewage tank 1 by anchor bolts. A flexible connection 41, an electric valve 42, and a manual valve 43 are installed sequentially at the inlet and outlet ends of the mud pump 40 in the direction away from the mud pump 40. Two sets of conveying pipe 3, pumping control unit 4, and stirring sedimentation unit 2 are provided, one for standby and one for use.
[0035] Reference Figure 1 A bottom valve 11 is installed at the connection between the conveying pipe 3 and the sewage tank 1, located inside the sewage tank 1. The bottom valve 11 can effectively prevent liquid backflow, ensuring that the conveying pipe 3 is always full of liquid, avoiding the mud pump 40 from running dry or being damaged when it starts due to the lack of liquid in the pipe. In addition, the filter screen of the bottom valve 11 can prevent debris in the sewage tank 1 from entering the conveying pipe 3, reducing the risk of damage to the mud pump 40. The bottom valve 11 is 150mm above the bottom of the tank. A liquid level sensor 12 is also installed on the sewage tank 1 to detect the sewage level. When the water level in the sewage tank 1 is too high, the dust removal system is prohibited from spraying the dust removal box to prevent the sewage tank 1 from overflowing.
[0036] Reference Figure 1 The output ends of two conveying pipes 1 and 3 are connected to conveying pipe 2 and 5 via a tee. The output end of conveying pipe 2 and 5 is connected to the sintering mixer to provide the water required for mixing. A pressure transmitter 50, a manual valve 2 and 51, an electric valve 2 and 52 and an electromagnetic flow meter 53 are installed in sequence on conveying pipe 2 and 5. The pressure transmitter 50 is used to detect the pressure in the pipe and the electromagnetic flow meter 53 is used to measure the amount of water conveyed by the mud pump 40.
[0037] Reference Figure 1The second conveying pipeline 5 is also connected to the circulation pipeline 6 via a tee. The connection point between the circulation pipeline 6 and the second conveying pipeline 5 is located between the pressure transmitter 50 and the second manual valve 51. The output end of the circulation pipeline 6 is connected to the sewage tank 1. The circulation pipeline 6 is equipped with a third manual valve 60 and an overflow valve 61. When the pressure in the pipeline exceeds the set pressure of the overflow valve 61, the overflow valve 61 automatically opens, and the sewage flows back into the sewage tank 1 along the circulation pipeline 6.
[0038] The implementation principle of a wet electrostatic precipitator spray wastewater recycling system according to an embodiment of this utility model is as follows: When removing dust generated during the batching and transportation process by the electrostatic precipitator, as the dust adsorbed in the dust collector increases, the dust removal system needs to work with the spray system to spray the dust collector. After spraying, the wastewater flows into the wastewater tank 1 through the sewage pipe. At this time, the stirring and sedimentation unit 2 works to stir the wastewater in the tank to prevent sludge from settling and caking.
[0039] When one of the two pumping control units 4 is in operation, it opens the electric valve 42, the manual valve 43 and the mud pump 40 to transport the sewage in the sewage tank 1 to the sintering mixer. The electric valve 52 on the second conveying pipeline 5 is controlled by the sintering mixer system according to the amount of water required for mixing. The electromagnetic flow meter 53 feeds back the water supply flow to the mixing control system.
[0040] When the mixer does not require water supply, the electric valve 52 is completely closed. At this time, the pressure in the conveying pipe 5 and the circulation pipe 6 increases. When the pressure in the pipe exceeds the set pressure of the overflow valve 61, the overflow valve 61 automatically opens, and the sewage flows back to the sewage tank 1 along the circulation pipe 6. When the mixer needs water supply again, the electric valve 52 is opened, and the pressure in the conveying pipe 5 drops. When the pressure drops below the set pressure of the overflow valve 61, the overflow valve 61 automatically closes, thus continuing to supply water to the mixer. When the mixer stops working, the mud pump 40 and the matching valves are closed.
[0041] In this invention, the wastewater after dust removal spraying is used in the mixing machine. The dust removal spraying effect is better after using clean water, the anode and cathode of the electrostatic precipitator are cleaner, and the dust removal effect is better. It reduces the sludge treatment step in the wastewater, avoids subsequent sludge treatment work, and reduces the loss of materials caused by dust during the belt transportation after batching. The dusty material is mixed into the sintering material of the mixing machine with the wastewater, reducing material loss.
[0042] The above are all preferred embodiments of this utility model, and are not intended to limit the scope of protection of this utility model. Therefore, all equivalent changes made to the structure, shape and principle of this utility model should be covered within the scope of protection of this utility model.
Claims
1. A wet electrostatic precipitator spray wastewater recycling system, characterized in that: It includes a sewage tank (1), a stirring and sedimentation unit (2) is installed in the sewage tank (1), a conveying pipeline (3) is connected to the sewage tank (1), a pumping control unit (4) is installed on the conveying pipeline (3), the pumping control unit (4) includes a mud pump (40) and matching valves, the output end of the conveying pipeline (3) is connected to the second conveying pipeline (5), the output end of the second conveying pipeline (5) is connected to the sintering mixer, and matching valves are installed on the second conveying pipeline (5).
2. The wet electrostatic precipitator spray wastewater recycling system according to claim 1, characterized in that: The second conveying pipeline (5) is connected to the circulation pipeline (6) via a tee. The circulation pipeline (6) is equipped with an overflow valve (61) and matching valves. The output end of the circulation pipeline (6) is connected to the sewage tank (1).
3. The wet electrostatic precipitator spray wastewater recycling system according to claim 1 or 2, characterized in that: There are at least two conveying pipes (3) connected in parallel. Each conveying pipe (3) is equipped with a set of conveying pump control unit (4). The conveying ends of multiple conveying pipes (3) are connected to conveying pipes (5) through branch pipe fittings.
4. The wet electrostatic precipitator spray wastewater recycling system according to claim 1, characterized in that: A bottom valve (11) is installed at the connection between the conveying pipeline (3) and the sewage tank (1), and the bottom valve (11) is located inside the sewage tank (1).
5. The wet electrostatic precipitator spray wastewater recycling system according to claim 1, characterized in that: The stirring sedimentation unit (2) includes a drive motor (20), the drive motor (20) is connected to a reducer (21), the reducer (21) is connected to a drive shaft (24), the drive shaft (24) is connected to a rotating shaft (26), and the rotating shaft (26) is equipped with stirring blades (27) for stirring the sewage.
6. The wet electrostatic precipitator spray wastewater recycling system according to claim 5, characterized in that: The stirring blade (27) is a cross-shaped frame.
7. The wet electrostatic precipitator spray wastewater recycling system according to claim 5, characterized in that: The top of the sewage tank (1) is covered with a grating platform (10), and the reducer (21) is fixed on the grating platform (10) by a frame (22).
8. The wet electrostatic precipitator spray wastewater recycling system according to claim 1, characterized in that: A liquid level sensor (12) is installed in the sewage tank (1).
9. The wet electrostatic precipitator spray wastewater recycling system according to claim 1, characterized in that: A pressure transmitter (50) is installed on the second (5) conveying pipeline.
10. The wet electrostatic precipitator spray wastewater recycling system according to claim 1, characterized in that: An electromagnetic flowmeter (53) is installed on the second (5) conveying pipeline.