Ash cleaning system for circulating pool of wet dust collector

Abstract

The utility model provides an ash removal system for a circulating pool of a wet dust collector. The ash removal system comprises an automatic control box, a desilting robot, a fire-fighting water bag, a stirring tank, a slag discharge pump, a plate-and-frame filter press and a flocculant dosing box, an ultrasonic liquid level meter and a pressure relief pipe are mounted at the upper part of the stirring tank in a matched manner; a mixer is mounted on the mixing pipeline in a matched manner; and a dosing metering pump is arranged between the slag discharge pump and the flocculant dosing tank in a matched manner. According to the utility model, ash deposition and ash removal of the circulating pool of the wet dust collector can be realized, manpower is saved, safety and reliability are realized, the ash removal efficiency is improved, various ash removal and ash separation processes can be carried out simultaneously, the deposited ash in the circulating pool is removed, the deposited ash is separated from water, the discharge of harmful sewage can be reduced, the water recycling is realized, and the water consumption is reduced. And the purposes of ash utilization, energy conservation and environmental protection are achieved.

Description

Technical Field

[0001] This utility model relates to the technical field of wet dust removal equipment, specifically to a wet dust collector circulating pool cleaning system. Background Technology

[0002] Steel mills and power plants employ various production processes involving ash removal. Different processes result in different dust characteristics. For example, slag dust from sintering and pelletizing processes, steelmaking processes, and salt-containing iron oxide dust from vortex diffuser processes generate dusty flue gas containing large amounts of water vapor. When using baghouse dust collectors or sintered plate dust collectors, the filter media easily clogs and becomes unusable. Only wet scrubbers can solve this problem. Wet scrubbers typically employ a spray atomization process, requiring a circulating pool for spray circulation and slag / water storage. Due to space limitations, the circulating pool is usually a flat-bottomed or slightly inclined pool. Since the pool area is small, using a traveling sludge suction machine or grab bucket crane would be too expensive and require too much space. Therefore, this invention proposes a wet scrubber circulating pool cleaning system to reduce project costs, protect the environment, improve working conditions for workers, and achieve high-efficiency dust removal. Summary of the Invention

[0003] To address the technical problems existing in the background art mentioned above, this utility model proposes a wet dust collector circulating pool cleaning system, which can realize the cleaning of accumulated ash in the circulating pool of the wet dust collector, save manpower, be safe and reliable, improve cleaning efficiency, and at the same time perform multiple cleaning and ash-slag separation processes, remove the accumulated ash in the circulating pool and realize the separation of ash and water, reduce the discharge of harmful wastewater, realize water recycling, reduce water consumption, achieve the goals of ash and slag utilization and energy conservation and environmental protection, and solve the problems of cleaning and slag-water separation in the circulating pool of the wet dust collector mentioned above.

[0004] To solve the above-mentioned technical problems, this utility model provides a wet dust collector circulating pool cleaning system, which includes an automatic control box, a sludge removal robot, a fire water bag, a mixing tank, a slag discharge pump, a plate and frame filter press, and a flocculant dosing tank;

[0005] The dredging robot is placed in the circulation pool and electrically connected to the automatic control box;

[0006] The mixing tank is located outside the circulation tank and is connected to the inside of the circulation tank through a sewage pipe;

[0007] One end of the fire water bag is connected to the fire water inlet of the mixing tank, and the other end is connected to the sewage outlet of the dredging robot.

[0008] An ultrasonic level gauge and a pressure relief pipe are also installed on the upper part of the mixing tank; the ultrasonic level gauge is electrically connected to the automatic control box.

[0009] The slag discharge pump is matched and installed on the side of the mixing tank and electrically connected to the automatic control box. Its input end is connected to the inner cavity of the mixing tank through a mixing pipe. A mixer is matched and installed on the mixing pipe.

[0010] The flocculant dosing tank is matched and installed next to the mixing tank; a dosing metering pump is also matched and installed between the slag discharge pump and the flocculant dosing tank; the dosing metering pump is electrically connected to the automatic control box; the input end of the dosing metering pump is connected to the inner cavity of the flocculant dosing tank through a pipe, and the output end of the dosing metering pump is connected to the mixer through the dosing pipeline; the flocculant dosing tank pumps the flocculant solution through the dosing metering pump and the dosing pipeline into the mixer to mix with the sludge in the slag discharge pipeline;

[0011] The plate and frame filter press is matched and installed on one side of the flocculant dosing tank and electrically connected to the automatic control box. Its input end is connected to the output end of the slag discharge pump through the slag discharge pipeline. The return end of the plate and frame filter press is connected to the inside of the circulation tank through the return pipe. The slag discharge pump pumps ash and slag into the plate and frame filter press through the slag discharge pipeline. The clear water separated by the plate and frame filter press is discharged back to the circulation tank through the return pipe.

[0012] The wet dust collector circulating pool cleaning system includes: a dosing hopper for adding chemicals, a chemical agitator for stirring chemicals, and a water supply pipe for supplying water, all installed on the flocculant dosing tank; the chemical agitator is electrically connected to the automatic control box.

[0013] The wet dust collector circulating pool cleaning system includes a sludge agitator installed on the mixing tank for stirring sludge; the sludge agitator is electrically connected to the automatic control box.

[0014] The wet dust collector circulating pool cleaning system further includes a cable reel box; the cable reel box is electrically connected to the automatic control box; and the cable reel box is also electrically connected to the dredging robot via a cable.

[0015] The wet dust collector circulating pool cleaning system includes: an automatic control box comprising an electrical control box, a PLC controller, and an AC contactor KM1; the electrical control box contains the AC contactor KM1 and circuit breakers QF0~QF1 connected in series; one end of the coil of the AC contactor KM1 is connected to the current output terminal of the circuit breaker QF1, and the other end of the coil of the AC contactor KM1 is electrically connected to the slag discharge pump; the contact switch of the AC contactor KM1 is electrically connected to the coil of the AC contactor KM1; terminal A1 of the AC contactor KM1 is connected to the neutral wire, and terminal A2 is electrically connected to the output port of the PLC controller 102; simultaneously, the PLC controller is connected to the neutral wire and the live wire; the input port of the PLC controller is electrically connected to the ultrasonic level gauge.

[0016] The wet dust collector circulating pool cleaning system includes a slag storage tank at the bottom of the plate and frame filter press.

[0017] By adopting the above technical solution, this utility model has the following beneficial effects:

[0018] This utility model's wet dust collector circulating pool cleaning system adopts a highly efficient cleaning process to achieve automatic cleaning and sludge-water separation in the dust collector's circulating water pool. The circulating pool cleaning uses an underwater dredging robot, which can effectively remove silt and debris from the bottom of the water, improving operational efficiency and safety. This utility model's cleaning system can ensure that it will not cause secondary pollution to the water area during the cleaning process.

[0019] While sludge-dredging robots offer many advantages, they also present challenges. Because the robots move continuously within the water tank, their sludge suction is not continuous, making direct connection to a plate and frame filter press impossible. The sludge must be stored in a mixing tank to a certain volume before being continuously pumped into the filter press via a discharge pump. Therefore, a fixed sludge removal system and a plate and frame filter press are required. The sludge is transferred from the storage tank to the mixing tank for storage and mixing before being pumped into the filter press to achieve sludge-water separation. Furthermore, the sludge discharged by the sludge-dredging robot has a very small particle size, easily clogging the filter plates of the plate and frame filter press. Therefore, flocculants need to be added for granulation, shaping the sludge into particles of a suitable size for filtration by the filter press before safely separating the sludge and water.

[0020] This utility model replaces the existing traveling suction sludge machine and grab bucket machine for ash removal, reduces project costs, protects the environment, improves workers' working conditions, effectively meets the requirements of high-efficiency ash removal, saves a lot of water and reduces water consumption, and achieves the goal of energy conservation and environmental protection. Attached Figure Description

[0021] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 This is a schematic diagram of the structure of the circulating tank cleaning system of the wet dust collector of this utility model;

[0023] Figure 2 This is a circuit diagram showing the connection principle of the ultrasonic level gauge, slag discharge pump, and automatic control box in the circulating pool cleaning system of the wet dust collector of this utility model.

[0024] In the diagram: 1-Automatic control box; 2-Cable reel box; 3-Dredging robot; 4-Fire water bag; 5-Mixing tank; 6-Sludge mixer; 7-Ultrasonic level gauge; 8-Pressure relief pipe; 9-Sludge pump; 10-Sludge discharge pipeline; 11-Sewage discharge pipeline; 12-Plate and frame filter press; 13-Return pipe; 14-Flocculant dosing tank; 15-Dosing hopper; 16-Drug mixer; 17-Water supply pipe; 18-Dosing metering pump; 19-Dosing pipe; 20-Mixer; 21-Flat-bottomed circulating tank; 22-Sludge storage bucket. Detailed Implementation

[0025] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0026] The present invention will be further explained below with reference to specific embodiments.

[0027] like Figure 1 As shown in the figure, the wet scrubber circulating pool cleaning system provided in this embodiment includes an automatic control box 1, a cable reel box 2, a sludge dredging robot 3, a fire water bag 4, a mixing tank 5, a sludge mixer 6, an ultrasonic level gauge 7, a pressure relief pipe 8, a slag discharge pump 9, a slag discharge pipeline 10, a sewage discharge pipeline 11, a plate and frame filter press 12, a return pipe 13, a flocculant dosing tank 14, a dosing hopper 15, a chemical mixer 16, a water supply pipe 17, a metering pump 18, a chemical dosing pipeline 19, and a mixer 20.

[0028] The automatic control box 1, cable reel box 2, and dredging robot 3 constitute the dredging unit. The dredging robot 3 is an intelligent ash-removing robot placed within the circulation pool 21 for underwater ash removal. The automatic control box 1 and cable reel box 2 are respectively positioned on the ground near the pool opening of the circulation pool 21. The cable reel box 2 is electrically connected to and controlled by the automatic control box 1. The cable reel box 2 is connected to the dredging robot 3 via a cable. In this embodiment, the dredging robot 3 is equipped with a built-in suction pump and a specially designed bucket, effectively removing silt and debris from the bottom of the water. The dredging robot 3 also features sensors such as lidar and underwater cameras, enabling autonomous positioning and location tracking, ensuring correct navigation in the underwater environment. Furthermore, the dredging robot 3, equipped with advanced control software, can optimize its path and automatically avoid obstacles to ensure task completion. It also provides real-time feedback on its position and status, facilitating remote monitoring and management by operators.

[0029] The mixing tank 5, sludge mixer 6, ultrasonic level gauge 7, pressure relief pipe 8, and sewage pipe 11 constitute a mixing unit and are located on one side of the sludge removal unit. The mixing tank 5 is installed on the ground on one side of the pool opening of the circulation pool 21. The upper part of the mixing tank 5 is provided with a fire water inlet near the circulation pool 21, and the lower side is connected to the sewage pipe 11, which leads into the interior of the circulation pool 21.

[0030] One end of the fire-fighting water bag 4 is connected to the fire-fighting water inlet of the mixing tank 5, and the other end is connected to the sewage outlet of the dredging robot 3.

[0031] The mixing tank 5 is equipped with a sludge agitator 6. The sludge agitator 6 is electrically connected to the automatic control box 1, with its main unit located on the top of the mixing tank 5 and its agitating part extending into the mixing tank 5. At the same time, the upper part of the mixing tank 5 is also equipped with an ultrasonic level gauge 7 and a pressure relief pipe 8. The ultrasonic level gauge 7 is electrically connected to the automatic control box 1, with one end extending into the mixing tank 5 and the other end located on the outside of the mixing tank 5. One end of the pressure relief pipe 8 extends into the mixing tank 5 and the other end is located on the outside of the mixing tank 5.

[0032] The slag discharge pump 9 is installed on the ground next to the mixing tank 5 and is electrically connected to the automatic control box 1. Its input end is connected to the lower inner cavity of the mixing tank 5 through a mixing pipe; and a mixer 20 is installed on the mixing pipe. The ultrasonic level gauge 7 is interlocked with the slag discharge pump 9. When the liquid level is high enough, the slag discharge pump 9 starts; when the liquid level is low enough, the slag discharge pump 9 stops.

[0033] The flocculant dosing tank 14, dosing hopper 15, agitator 16, water supply pipe 17, metering pump 18, and dosing pipeline 19 constitute a dosing unit located on one side of the mixing unit. The flocculant dosing tank 14 is positioned on the ground next to the mixing tank 5 of the mixing unit. The dosing hopper 15, agitator 16, and water supply pipe 17 are positioned above the flocculant dosing tank 14. The outlet of the dosing hopper 15 communicates with the inner cavity of the flocculant dosing tank 14. The agitator 16 is electrically connected to the automatic control box 1, with its main unit located on the top outer side of the flocculant dosing tank 14 and its mixing unit located inside the flocculant dosing tank 14. The water supply pipe 17 extends into the flocculant dosing tank 14 at one end and is connected to the external water supply system at the other end. The dosing metering pump 18 is matched and installed on the ground between the slag discharge pump 9 and the flocculant dosing tank 14. The dosing metering pump 18 is electrically connected to the automatic control box 1, and its input end is connected to the lower part of the inner cavity of the flocculant dosing tank 14 through a pipe. The output end of the dosing metering pump 18 is connected to the dosing pipeline 19 and is connected to the mixer 20 through the dosing pipeline 19.

[0034] The slag discharge pipeline 10, the plate and frame filter press 12, and the return pipe 13 constitute the slag discharge unit. The plate and frame filter press 12 is matched and installed on one side of the flocculant dosing tank 14 of the dosing unit and is electrically connected to the automatic control box 1. A slag storage tank 22 is installed at its lower part. The input end of the plate and frame filter press 12 is connected to the output end of the slag discharge pump 9 through the slag discharge pipeline 10, and the return end of the plate and frame filter press 12 is introduced into the interior of the circulation tank 21 through the return pipe 13.

[0035] The slag discharge pump 9 pumps the ash into the plate and frame filter press 12 via the slag discharge pipeline 10. The clean water separated by the plate and frame filter press 12 is discharged back into the circulation tank 21 via the return pipe 13.

[0036] The flocculant dosing tank 14 pumps the well-stirred flocculant solution through the dosing metering pump 18 and the dosing pipeline 19 into the mixer 20 to mix with the slurry in the slag discharge pipeline 10.

[0037] like Figure 2 As shown, the automatic control box 1 includes an electrical control box 101, a PLC controller 102, and an AC contactor KM1. The electrical control box 101 houses the AC contactor KM1 and circuit breakers QF0~QF1 connected in series. One end of the coil of the AC contactor KM1 is connected to the current output terminal of the circuit breaker QF1, and the other end of the coil is electrically connected to the slag discharge pump 9. The contact switch of the AC contactor KM1 is electrically connected to the coil of the AC contactor KM1. Terminal A1 of the AC contactor KM1 is connected to the neutral wire, and terminal A2 is electrically connected to the output port of the PLC controller 102. Simultaneously, the PLC controller 102 is connected to both the neutral and live wires. The input port of the PLC controller 102 is electrically connected to the ultrasonic level gauge 7.

[0038] The cable reel box 2, sludge mixer 6, slag discharge pump 9, plate and frame filter press 12, drug mixer 16, and dosing metering pump 18 are all electrically connected to the PLC controller 102 and are controlled by it.

[0039] This invention enables the cleaning and ash removal of the circulating pool in a wet dust collector, saving manpower, ensuring safety and reliability, and improving cleaning efficiency. It also enables various cleaning and ash-slag separation processes, removing accumulated ash from the circulating pool and separating the ash from the water. This reduces the discharge of harmful wastewater, achieves water recycling, lowers water consumption, and realizes the goals of ash and slag utilization, energy conservation, and environmental protection.

[0040] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. A wet dust collector circulating pond ash removal system characterized by: The system comprises an automatic control box (1), a dredging robot (3), a fire-fighting water bag (4), a stirring tank (5), a residue discharge pump (9), a plate-and-frame filter press (12) and a flocculant dosing tank (14); The dredging robot (3) is arranged in a circulating pool (21) and electrically connected with the automatic control box (1); The stirring tank (5) is located outside the circulating pool (21) and connected to the inside of the circulating pool (21) through a sewage discharge pipeline (11); One end of the fire-fighting water bag (4) is connected to a fire-fighting water inlet of the stirring tank (5), and the other end is connected to a sewage discharge port of the dredging robot (3); An ultrasonic liquid level meter (7) and a pressure relief pipe (8) are further matched and installed on the upper portion of the stirring tank (5); the ultrasonic liquid level meter (7) is electrically connected with the automatic control box (1); The residue discharge pump (9) is matched and arranged beside the stirring tank (5) and electrically connected with the automatic control box (1); an input end of the residue discharge pump (9) is communicated with an inner cavity of the stirring tank (5) through a mixing pipeline; and a mixer (20) is matched and installed on the mixing pipeline; The flocculant dosing tank (14) is matched and arranged beside the stirring tank (5); a dosing metering pump (18) is further matched and arranged between the residue discharge pump (9) and the flocculant dosing tank (14); the dosing metering pump (18) is electrically connected with the automatic control box (1); an input end of the dosing metering pump (18) is communicated with an inner cavity of the flocculant dosing tank (14) through a pipeline; and an output end of the dosing metering pump (18) is connected with the mixer (20) through a dosing pipeline (19); The plate-and-frame filter press (12) is matched and arranged on one side of the flocculant dosing tank (14) and electrically connected with the automatic control box (1); an input end of the plate-and-frame filter press (12) is connected with an output end of the residue discharge pump (9) through a residue discharge pipeline (10); a backflow end of the plate-and-frame filter press (12) is connected to the inside of the circulating pool (21) through a backflow pipe (13); the residue discharge pump (9) pumps ash into the plate-and-frame filter press (12) through the residue discharge pipeline (10); and clean water separated by the plate-and-frame filter press (12) is discharged back to the circulating pool (21) through the backflow pipe (13); The flocculant dosing tank (14) pumps liquid medicine into the mixer (20) and mud in the residue discharge pipeline (10) through the dosing metering pump (18) and the dosing pipeline (19).

2. The wet dust collector circulating tank ash cleaning system of claim 1, wherein: A dosing hopper (15) for adding medicine, a medicine stirrer (16) for stirring medicine and a water supply pipe (17) for water supply are further matched and installed on the flocculant dosing tank (14); the medicine stirrer (16) is electrically connected with the automatic control box (1).

3. The wet dust collector circulating tank ash cleaning system of claim 1, wherein: A sludge stirrer (6) for stirring sludge is further matched and installed on the stirring tank (5); the sludge stirrer (6) is electrically connected with the automatic control box (1).

4. The wet dust collector circulating tank ash cleaning system of claim 1, wherein: The system further comprises a cable winding box (2); the cable winding box (2) is electrically connected with the automatic control box (1); and the cable winding box (2) is further electrically connected with the dredging robot (3) through a cable.

5. The wet dust collector circulating tank ash cleaning system of claim 1, wherein: The automatic control box (1) comprises an electric control box (101), a PLC controller (102) and an alternating current contactor KM1; the electric control box (101) is internally arranged with the alternating current contactor KM1 and circuit breakers QF0-QF1 connected in series with each other; one end of a coil of the alternating current contactor KM1 is connected to a current output end of the circuit breaker QF1, and the other end of the coil of the alternating current contactor KM1 is electrically connected to the slag pump (9); an electric contact switch of the alternating current contactor KM1 is electrically connected to the coil of the alternating current contactor KM1; a wiring terminal A1 of the alternating current contactor KM1 is connected to a zero line, and a wiring terminal A2 is electrically connected to an output port of the PLC controller (102); meanwhile, the PLC controller (102) is connected to the zero line and a live line; an input port of the PLC controller (102) is electrically connected to the ultrasonic liquid level meter (7).

6. The wet dust collector circulating tank ash cleaning system of claim 1, wherein: The lower part of the plate-and-frame filter press (12) is further matched with a slag storage barrel (22).

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