High-consistency workpiece surface treatment and geometrical shape control method and equipment

Abstract

The invention relates to the field of magnetic material grinding procedures, and discloses a high-consistency workpiece surface treatment and geometrical shape control method and equipment. Comprising an automatic weighing system used for weighing workpieces, automatic feeding equipment used for conveying the workpieces, automatic carrying equipment, an automatic grinding machine used for conducting surface treatment and geometrical shape control on the workpieces, an automatic discharging device, an automatic conveying device, an automatic screening device and a full-automatic central control system. A full-automatic reuse water circulation system and an automatic flushing system; the full-automatic central control system controls all the devices and systems to be matched with one another, and high-consistency surface treatment and geometrical shape control over workpieces are achieved. Through the automatic use of the procedure, the neodymium iron boron workpiece can be automatically ground, the process is solidified, the quality is stable, the number of workers is greatly reduced, the production cost is reduced, and the product quality and the production efficiency are improved.

Description

Technical Field

[0001] The present invention relates to the field of magnetic material grinding processes, and in particular to a method and equipment for high-consistency workpiece surface treatment and geometric shape control. Background Art

[0002] In modern industrial production, workpiece surface treatment and geometric shape control play a key role in product quality and performance. However, existing technologies have many problems that need to be solved. In terms of grinding accuracy, traditional technology is difficult to achieve high-precision positioning and process optimization, resulting in defects such as edge chipping and burrs on the workpiece during the grinding process. It is impossible to ensure that the grinding size and surface quality meet the high-precision requirements, which seriously affects the product's performance and assembly accuracy. In terms of production efficiency, existing equipment is unable to achieve efficient and continuous workpiece grinding production, and it is difficult to meet the growing demand for large-scale production, which has become a bottleneck restricting the company's production capacity improvement. Manual grinding requires superb manual skills and rich experience, and the talent training cycle is long, which is difficult to meet the needs of large-scale and standardized production in modern industry. At the same time, the existing equipment has poor adaptability to workpieces of different specifications and materials. A lot of adjustments are required when changing the processing object, which consumes time and labor costs. To this end, we propose a high-consistency workpiece surface treatment and geometric shape control method and equipment to solve the problems raised in the above background technology. Summary of the Invention

[0003] The present invention mainly solves the technical problems existing in the above-mentioned prior art and provides a method and equipment for high-consistency workpiece surface treatment and geometric shape control.

[0004] In order to achieve the above-mentioned purpose, the present invention adopts the following control method, a high-consistency workpiece surface treatment and geometric shape control method, comprising the following steps: Step 1: The mechanical claw of the automatic weighing system grabs the material basin and places it on the conveyor belt. The conveyor belt transports the material basin to the discharge port for weighing. When the sensor detects that the weight of the material in the material basin reaches the set weight, the conveyor belt transports the material basin to the discharge location; Step 2: The crane of the automatic feeding equipment hangs the material pot above the designated grinder. After lowering the material pot to the designated position, the material pot cylinder lifts up and opens the material pot, and the material enters the grinder; Step 3: The automatic conveying equipment controls the crane to transport the material pot through the PLC controller. After placing it at the designated position, the conveying conveyor belt starts to transport the material pot to the lower abrasive port. The cylinder automatically senses the lifting of the material pot and automatically rotates it 360° to complete the abrasive placement and weighing; Step 4: The automatic grinder controls the crane to transport the material pot through the PLC The controller sets the process parameters and grinds the edge of the workpiece; Step 5: When the automatic unloading device reaches the set time, the unloading port of the grinder automatically opens, and the abrasive and product enter the automatic conveyor belt; Step 6: The automatic conveying device conveys the workpiece to the automatic screening device; Step 7: The automatic screening device screens the workpiece, and the screened abrasive is conveyed to the material pot, and the screened product is conveyed to the automatic weighing system for weighing; Step 8: The fully automatic central control system automatically manages and controls the entire production process by collaborating with various equipment and sensors, and performs real-time process optimization based on visual inspection and sensor data; Step 9: The fully automatic recycled water circulation system recycles, treats and recycles the grinding water; Step 10: The automatic flushing system flushes the drainage trough through the sprinkler head at the set interval, so that the grinding water and mud enter the return water storage tank.

[0005] In order to achieve the above-mentioned objectives, the present invention adopts the following technical solutions, high-consistency workpiece surface treatment and geometric shape control equipment, including an automatic weighing system for weighing workpieces, automatic feeding equipment for conveying workpieces, automatic handling equipment, an automatic grinder for surface treatment and geometric shape control of workpieces, an automatic unloading device, an automatic conveying device, an automatic screening device, a fully automatic central control system, a fully automatic recycled water circulation system and an automatic flushing system; the fully automatic central control system controls the various devices and systems to cooperate with each other to achieve high-consistency surface treatment and geometric shape control of workpieces.

[0006] Preferably, the automatic weighing system includes a mechanical claw, a conveyor belt, a discharge port, a weighing device and a sensor; the mechanical claw is used to grab the material basin containing the material and move the material basin to the conveyor belt; the conveyor belt is driven by a motor to automatically move the material basin to the discharge port, and the weighing device at the discharge port weighs the material in the material basin; the sensor is used to sense the position and weight information of the material basin and transmit the signal to the control system. When the weight of the material in the material basin reaches the set weight, the conveyor belt transports the material basin to the discharge port.

[0007] Preferably, the automatic feeding equipment hangs the material pot above the designated grinder by a crane, and a cylinder is provided under the material pot. When the material pot is lowered to the designated position, the cylinder lifts up and opens the material pot, allowing the material to enter the grinder from under the material pot.

[0008] Preferably, the automatic handling equipment sets the process through a PLC controller. After the automatic handling equipment uses a crane to transport the material pot to a designated position, the conveyor belt is started to transport the material pot to the lower abrasive port. A cylinder is provided at the lower abrasive port for automatically sensing and lifting the material pot, and automatically rotating the material pot 360° so that the abrasive can be automatically placed in and automatically weighed.

[0009] Preferably, the automatic grinder uses a PLC controller to control the working process for grinding the edge of the workpiece; the PLC controller is used to set the grinding angle, depth, feed speed, cutting speed, processing sequence, cycle times and the collaborative working logic of related equipment.

[0010] Preferably, the automatic unloading device is provided with a timing process. When the set time is reached, the unloading port of the grinder is automatically opened by the cylinder control, so that the abrasive and the product enter the automatic conveying device; the automatic conveyor belt drives the belt transmission components through the motor to realize the automatic transmission of the workpiece between different positions.

[0011] Preferably, the automatic screening device includes two screening layers. The first layer of screening mesh is replaced according to the material properties and size and is used to screen the material; the second layer of screening mesh is used to screen the abrasive; the screened abrasive is transported to the material pot, and the screened product is transported to the automatic weighing system for weighing.

[0012] Preferably, the fully automatic central control system is used to carry out comprehensive automated management and regulation of the entire production process; the fully automatic central control system realizes the automation of the entire process of product grinding processing by collaborating with the CNC grinder, crane and intelligent sensor; the fully automatic central control system integrates a visual inspection module, and performs real-time process optimization based on visual inspection and data obtained by intelligent sensors; the fully automatic central control system supports multi-device linkage, and coordinates and controls the CNC grinder, crane, and intelligent sensor equipment to work together; the water used for grinding is centrally recovered into the return water storage tank, and after being processed by the filter press, the clean water is pumped into the filter press storage tank, and then the water in the filter press storage tank is pumped back to the production line for continued use through a high-pressure pump; the grinding water and mud in the production process of the grinder flow into the drainage trough, and the automatic flushing system is provided with a spray head. By setting the interval time, the spray head flushes the drainage trough, so that the water and mud are flushed into the return water storage tank. Beneficial effects

[0013] The present invention provides a method and equipment for high-consistency workpiece surface treatment and geometric shape control, which has the following beneficial effects: (1) The fully automatic grinding process of the present invention can realize automatic and effective grinding of workpieces, solving the problems of the existing manual feeding, unstable unloading, labor shortage of existing semi-automatic grinding technicians, and normal application of the consistency of workpieces.

[0014] (2) Through the automation of this process, the grinding of NdFeB workpieces can be automated, the process can be solidified, the quality can be stable, the number of workers can be greatly reduced, the production efficiency can be improved, and the production cost can be reduced.

[0015] (3) The high-consistency workpiece surface treatment and geometric shape control method and equipment optimizes the original semi-automatic grinding process, which is complex to operate and difficult to control, into one that is easy to operate and simple to control, thereby improving product quality, strengthening production standardization, and having a good driving effect on the realization of full-sequence automation. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the automatic grinding device of the present invention; Figure 2 This is a side view of the automatic grinding device of the present invention; Figure 3 It is a schematic top view of the automatic grinding of the present invention.

[0017] Legend: 11. Automatic weighing system; 12. Automatic feeding equipment; 13. Automatic handling equipment; 14. Automatic grinding machine; 16. Automatic conveying device; 17. Automatic screening device. DETAILED DESCRIPTION

[0018] The method for high-consistency workpiece surface treatment and geometric shape control includes the following steps: Step 1: The mechanical claw of the automatic weighing system 11 grabs the material basin and places it on the conveyor belt. The conveyor belt transports the material basin to the discharge port for weighing. When the sensor detects that the weight of the material in the material basin reaches the set weight, the conveyor belt transports the material basin to the discharge location; Step 2: The crane of the automatic feeding equipment 12 hangs the material pot above the designated grinder, and after lowering the material pot to the designated position, the material pot cylinder lifts up and opens the material pot, and the material enters the grinder; Step 3: The automatic handling equipment 13 controls the crane to transport the material pot through the PLC controller. After placing it at the designated position, the conveyor belt starts to transport the material pot to the lower abrasive port. The cylinder automatically senses the lifting of the material pot and automatically rotates it 360° to complete the abrasive placement and weighing; Step 4: The automatic grinder 14 controls the crane to transport the material pot through the PLC controller. The controller sets the process parameters and grinds the edge of the workpiece; Step 5: When the automatic unloading device reaches the set time, the unloading port of the grinder automatically opens, and the abrasive and product enter the automatic conveyor belt; Step 6: The automatic conveying device 16 conveys the workpiece to the automatic screening device 17; Step 7: The automatic screening device 17 screens the workpiece, and the screened abrasive is transported to the material pot, and the screened product is transported to the automatic weighing system 11 for weighing; Step 8: The fully automatic central control system automatically manages and controls the entire production process by cooperating with various equipment and sensors, and performs real-time process optimization based on visual inspection and sensor data; Step 9: The fully automatic recycled water circulation system recycles, treats and recycles the grinding water; Step 10: The automatic flushing system flushes the drainage trough through the sprinkler head at the set interval, so that the grinding water and mud enter the return water storage tank.

[0019] like Figure 1-3 As shown: The high-consistency workpiece surface treatment and geometric shape control technology and equipment of the present invention, the device consists of ten main bodies, among which the first main body is the automatic weighing system 11 of the device, the second main body is the automatic feeding equipment 12, the third main body is the automatic handling equipment 13, the fourth main body is the automatic grinder 14, the fifth main body is the automatic unloading device, the sixth main body is the automatic conveying device 16, the seventh main body is the automatic screening device 17, the eighth main body is the fully automatic central control system, the ninth main body is the fully automatic recycled water circulation system, and the tenth main body is the automatic flushing system.

[0020] The first component is the automatic weighing system 11, whose primary function is to automatically weigh workpieces. The automatic weighing system 11 begins operation by grasping the material basin with a mechanical gripper. The mechanical gripper, a device that mimics the grasping function of a human hand, accurately grasps the material basin. The material basin is a container for holding materials, and the gripping action of the mechanical gripper ensures smooth movement of the material basin. The material basin is then transferred to a conveyor belt. After the mechanical gripper grasps the material basin, it is moved and placed on the conveyor belt. A conveyor belt is a continuous conveying device, typically driven by a motor, capable of carrying and transporting the material basin. The conveyor belt automatically moves the material basin to the discharge port and weighs it. Once activated, the conveyor belt automatically runs along a set path and speed, transporting the material basin to the discharge port. A weighing device is installed at the discharge port. When the material basin reaches the discharge port, the weighing device weighs the material within the basin and obtains the current weight data. Sensors are also provided: The system is equipped with sensors that monitor the status and position of the material basin in real time. For example, they can detect whether the basin has reached the discharge port, whether the weighing process is completed, etc. The sensor transmits the signal to the control system by sensing the quantity of various workpieces (such as position, weight, distance, etc.) so that the system can make corresponding decisions and operations. The material is transported to the discharge point at the set weight: the control system compares the actual weight obtained by the weighing device with the pre-set target weight. When the sensor detects that the weight of the material in the basin has reached the set weight, the conveyor belt will continue to run and transport the basin to the discharge point. At the discharge point, the material will be released from the basin and enter the subsequent production link or storage area.

[0021] The automatic feeding device 12 is suspended above the designated grinder through the crane pot, and the pot is slowly lowered. When the pot reaches a certain position, the pot cylinder is lifted up to open the pot and the grinder is placed under the pot.

[0022] The automatic handling equipment 13 sets the process through the PLC controller. After the discharge pot is transported to the main body three by the crane and placed in, the conveyor belt is started to the lower abrasive port. The cylinder automatically senses the lifting and lowering of the discharge pot and automatically rotates the abrasive pot 360° to automatically place the abrasive and automatically weigh it.

[0023] The fourth component, the automatic grinder 14, is a device used to grind workpiece edges. It automatically completes the grinding process, eliminating the need for extensive manual operation and improving processing efficiency and precision. The automatic grinder 14 utilizes a PLC controller to control its operation. The PLC controller allows for setting various process parameters for the automatic grinder 14, such as grinding angle, depth, feed rate, and cutting speed. It also allows for settings such as the processing sequence, number of cycles, and logical relationships with other devices.

[0024] When the process of the fifth main body automatic unloading device is completed, the unloading port of the grinding machine will automatically open (mainly controlled by a cylinder), and the abrasive and the product will be transferred to the sixth main body.

[0025] The sixth main body automatic conveying device 16 is a device for conveying workpieces. It drives transmission components such as belts or chains through a motor to realize automatic transmission of workpieces between different positions, which can save manpower and improve production efficiency.

[0026] The seventh main body automatic screening device 17 requires a two-layer screening system. For example, the first layer of screening mesh needs to be replaced with a vibrating screen based on the material characteristics and size (density, magnetism, and particle size). For example, abrasives below D3 are screened on the second layer of screening mesh and collected from the screening pipe. After screening, the abrasive is conveyed to the material pot, and the screened product is conveyed to the first main weighing machine.

[0027] The eighth component is the fully automated central control system, which serves as the core control system and provides comprehensive automated management and control of the entire production process. The entire product grinding process is automated through the collaboration of CNC grinders, cranes, and intelligent sensors. Cranes, in this context, refer to lifting equipment that can be moved within a certain space, used for product handling. Under the coordination of the fully automated central control system, the cranes and other equipment work together. Intelligent sensors sense various product information, such as position and status, and provide real-time feedback to the central control system. Based on sensor data, the central control system precisely controls the operation of the CNC grinders, cranes, and other equipment, ensuring automated operation from the start to the end of the product grinding process without excessive human intervention. Integrated visual inspection and real-time process optimization: Based on data collected by visual inspection and intelligent sensors, the central control system analyzes the current production process in real time. If process parameters are found to be unreasonable or to affect product quality and production efficiency, the system automatically adjusts and optimizes these parameters to ensure optimal production. Support for multi-device linkage: This fully automatic central control system can coordinate and control a variety of different equipment, such as CNC grinders, cranes, and intelligent sensors, enabling them to work together and collaborate. Through the linkage between equipment, a seamless production process is achieved, improving the continuity and smoothness of production.

[0028] The ninth part is a fully automatic recycled water circulation system. The water used for grinding is collected and recycled into the return water storage tank. After passing through the filter press, the clean water is pumped into the filter press storage tank. The water in the filter press tank is pumped back to the production line for continued use through a high-pressure pump.

[0029] The tenth main body is the automatic flushing system. The grinding water and mud in the production process of the grinder flow into the drainage trough. The grinding water contains mud, which is easy to precipitate and clog. The water and mud are flushed into the return water storage tank with a sprinkler head (the interval time is set by yourself).

[0030] In this solution, there are alternatives to the above device body: Automatic weighing system (first subject) Alternative solution: Use a smart basin with automatic weighing. The basin itself has a load cell and wireless transmission capabilities, eliminating the need for mechanical grippers and conveyor belts. When the basin is placed in the designated position, the weight data is automatically transmitted to the control system. Once the set weight is reached, other devices directly transfer the material in the basin to the unloading area.

[0031] Automatic feeding equipment (automatic feeding equipment) Alternative solution: Use a vacuum suction device instead of a crane to lift the material pot. The material pot is picked up by a vacuum suction cup and moved to the top of the designated grinder by a robotic arm. The material pot is then slowly lowered and positioned by controlling the descending speed and position of the robotic arm.

[0032] Automatic handling equipment (automatic handling equipment) Alternative: Use AGVs (Automated Guided Vehicles) instead of cranes for handling. AGVs automatically move the pot to a designated location according to a pre-set path and program. They then connect to conveyors or other equipment to automatically load and unload the pot.

[0033] Automatic grinding machine (fourth body) Alternative: Using laser grinding technology instead of mechanical grinding. Laser grinding utilizes the high energy density of the laser beam to melt and vaporize the workpiece edge, achieving the grinding process. Laser grinding can precisely control the laser power, scanning speed, and path through a CNC system, achieving high-precision grinding.

[0034] Automatic unloading device (fifth body) Alternative solution: Use an electric push rod or auger instead of a pneumatic cylinder to control the opening of the discharge port. The electric push rod can be driven by a motor to achieve precise linear motion, thereby controlling the opening and closing of the discharge port. The auger can also play a certain stirring and mixing role while pushing the material out, ensuring uniform material discharge.

[0035] Automatic screening device (seventh body) Alternative solution: Use airflow screening technology instead of vibrating screen screening. Use high-speed airflow to bring the workpiece into the screening chamber, and separate and screen different particles under the action of airflow according to the size and density of the workpiece particles.

[0036] Fully automatic recycled water circulation system (ninth body) Alternative solution: Use reverse osmosis membrane filtration combined with ion exchange resin adsorption technology to treat and reuse grinding wastewater. Reverse osmosis membranes effectively remove most impurities and salts from wastewater, while ion exchange resins further remove trace ions, ensuring that the treated water meets reuse standards.

[0037] Automatic flushing system (tenth body) Alternative: Use a high-pressure water gun combined with a rotating nozzle instead of a conventional flushing device. The high-pressure water gun can generate a high-pressure water flow to powerfully flush the surface of equipment and products, while the rotating nozzle can cover a wider area with water flow, improving the flushing effect.

[0038] By using alternative solutions, it is also possible to achieve automatic and efficient grinding of workpieces.

[0039] The basic principles, main features and advantages of the present invention are shown and described above. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and modifications may be made to the present invention without departing from the spirit and scope of the present invention, and such changes and modifications fall within the scope of the invention as claimed.

Claims

1. A method for high consistency workpiece surface treatment and geometric shape control, characterized in that: The following steps are involved: Step 1: The mechanical claw of the automatic weighing system (11) grabs the material basin and places it on the conveyor belt. The conveyor belt transports the material basin to the discharge port for weighing. When the sensor detects that the weight of the material in the material basin reaches the set weight, the conveyor belt transports the material basin to the discharge port; Step 2: The automatic feeding device (12) is used to hoist the pot above the designated grinder. After lowering the pot to the designated position, the pot cylinder is lifted to open the pot, and the material enters the grinder. Step 3: The automatic handling equipment (13) controls the crane to carry the material pot through the PLC controller. After it is placed at the designated position, the conveyor belt starts to transport the material pot to the lower abrasive port. The cylinder automatically senses the lifting of the material pot and automatically rotates it 360 degrees to complete the placement and weighing of the abrasive. Step 4: The automatic grinding machine (14) sets the process parameters through the PLC controller and grinds the edge of the workpiece; Step 5: When the automatic unloading device reaches the set time, the unloading port of the grinder automatically opens, and the abrasive and product enter the automatic conveyor belt; Step 6: The conveyor belt of the automatic conveying device (16) conveys the workpiece to the automatic screening device (17); Step 7: The automatic screening device (17) screens the workpiece, and the screened abrasive is transported to the material pot. The screened product is transported to the automatic weighing system (11) for weighing; Step 8: The fully automated central control system collaborates with various devices and sensors to automatically manage and control the entire production process, performing real-time process optimization based on visual inspection and sensor data. Step 9: The fully automatic water recycling system recycles, treats and recycles the grinding water; Step 10: The automatic flushing system flushes the drainage trough through the sprinkler head at the set interval time, so that the grinding water and mud enter the return water storage tank.

2. High consistency workpiece surface treatment and geometry control equipment, characterized by: It includes an automatic weighing system (11) for weighing the workpiece, an automatic feeding device (12) for conveying the workpiece, an automatic handling device (13), an automatic grinding machine (14) for surface treatment and geometric shape control of the workpiece, an automatic unloading device, an automatic conveying device (16), an automatic screening device (17), a fully automatic central control system, a fully automatic recycled water circulation system and an automatic flushing system; The fully automatic central control system controls the various devices and systems to cooperate with each other to achieve highly consistent surface treatment and geometric shape control of the workpiece.

3. The high-consistency workpiece surface treatment and geometry control equipment according to claim 2, characterized in that: The (11) includes a mechanical claw, a conveyor belt, a discharge port, a weighing device and a sensor; the mechanical claw is used to grab the material basin containing the material and move the material basin to the conveyor belt; the conveyor belt is driven by a motor to automatically move the material basin to the discharge port, and the weighing device at the discharge port weighs the material in the material basin; the sensor is used to sense the position and weight information of the material basin and transmit the signal to the control system. When the weight of the material in the material basin reaches the set weight, the conveyor belt transports the material basin to the discharge port.

4. The high-consistency workpiece surface treatment and geometry control equipment according to claim 2, characterized in that: The automatic feeding device (12) is used to suspend the material pot above the designated grinder by means of a crane. A cylinder is provided below the material pot. When the material pot is lowered to a designated position, the cylinder lifts up and opens the material pot, allowing the material to enter the grinder from below the material pot.

5. The high-consistency workpiece surface treatment and geometry control equipment according to claim 2, characterized in that: The automatic handling equipment (13) sets the process through the PLC controller. After the automatic handling equipment uses a crane to transport the material pot to a designated position, the conveyor belt is started to transport the material pot to the lower abrasive port. The lower abrasive port is provided with a cylinder for automatically sensing and lifting the material pot, and automatically rotating the material pot 360 degrees so that the abrasive can be automatically placed in and automatically weighed.

6. The high-consistency workpiece surface treatment and geometry control equipment according to claim 2, characterized in that: The automatic grinding machine (14) uses a PLC controller to control the working process and is used to grind the edge of the workpiece; the PLC controller is used to set the grinding angle, depth, feed speed, cutting speed, processing sequence, cycle number and the coordinated working logic of related equipment.

7. The high-consistency workpiece surface treatment and geometry control equipment according to claim 2, characterized in that: The automatic unloading device is provided with a timing process. When the set time is reached, the unloading port of the grinding machine is automatically opened by the cylinder control, so that the abrasive and the product enter the automatic conveying device (16); the automatic conveying device (16) drives the belt transmission component through the motor to realize the automatic transmission of the workpiece between different positions.

8. The high-consistency workpiece surface treatment and geometry control equipment according to claim 2, characterized in that: The automatic screening device (17) includes two screening layers. The first screening layer is replaced according to the material properties and size and is used to screen the material. The second screening layer is used to screen the abrasive. The screened abrasive is transported to the material pot, and the screened product is transported to the automatic weighing system (11) for weighing.

9. The high-consistency workpiece surface treatment and geometry control equipment according to claim 2, characterized in that: The fully automatic central control system is used to carry out comprehensive automated management and regulation of the entire production process; the fully automatic central control system realizes the automation of the entire process of product grinding processing by collaborating with the CNC grinder, crane and intelligent sensors; the fully automatic central control system integrates a visual inspection module, and performs real-time process optimization based on visual inspection and data obtained by intelligent sensors; the fully automatic central control system supports multi-device linkage, and coordinates and controls the CNC grinder, crane, and intelligent sensor equipment to work together; the water used for grinding is centrally recovered into the return water storage tank, and after being processed by the filter press, the clean water is pumped into the filter press storage tank, and then the water in the filter press storage tank is pumped back to the production line for continued use through a high-pressure pump; the grinding water and mud in the production process of the grinder flow into the drainage trough, and the automatic flushing system is provided with a spray head. By setting the interval time, the spray head flushes the drainage trough, so that the water and mud are flushed into the return water storage tank.

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