A slurry circulation temperature control device

Abstract

This application relates to the field of current collector production technology, specifically a slurry circulation temperature control device. The device includes a tray for holding the slurry to be coated. The bottom of the tray is fed by a slurry cart, and the tray and cart are connected by inlet and outlet pipes. The tray contains a first temperature sensor and a first level gauge for detecting the slurry temperature. The slurry cart is placed in a cooling liquid tank and contains a second temperature sensor and a second level gauge. The second temperature sensor is located at the outlet of the slurry cart. The inlet and outlet pipes include an inlet pipe and an outlet pipe, both equipped with flow valves and booster pumps. This application utilizes a slurry circulation temperature control device to maintain the slurry's performance and improve the yield of coated products.

Description

Technical Field

[0001] This application relates to the field of current collector production technology, and in particular to a slurry circulation temperature control device. Background Technology

[0002] When conducting small-batch coating experiments, the factory only needs a small amount of slurry to produce R&D samples. The slurry used for these samples is less than that used for mass-produced products, and its composition is generally different from that of slurry used for normal mass-produced carbon coating products. Moreover, when testing new slurry or new rollers, problems are often found that require machine shutdown for maintenance and confirmation. The slurry consumption rate in the tray varies, and the automatic slurry transport system of the normal mass production line cannot be used. Therefore, it is necessary to manually add slurry at the appropriate temperature to the tray so that the coating machine's pick-up roller can pick up the slurry from the tray to produce R&D samples.

[0003] During this process, the slurry is loaded into buckets at high temperature and transported by cart to an idle coating machine that is not currently in mass production. The slurry in the tray is then managed by designated personnel for use in R&D sample production. Excessive slurry temperature will affect coating quality; during slurry addition, the liquid surface may swell and splash upwards, causing uneven slurry pickup by the coating machine's pick-up roller; adding too much slurry will overflow the tray, leading to waste and impacting the workshop's 5S (Good Manufacturing Practice) standards; adding too little slurry will prevent the pick-up roller from picking up the material; when the coating machine is shut down for maintenance, if the slurry in the tray does not cool down in time, it may clump and become unusable. Manual management of the slurry in the tray can easily affect sample quality, with common anomalies including missed coating, white lines, and excessive areal density. Failure to meet performance standards will result in defective products, causing unnecessary losses and reducing the production cost of R&D samples.

[0004] Based on the above situation, the technical solution we propose later can solve this problem. Utility Model Content

[0005] In order to overcome the problems existing in the prior art, this application provides a slurry circulation temperature control device.

[0006] The slurry circulation temperature control device provided in this application adopts the following technical solution:

[0007] A slurry circulation temperature control device includes a tray for holding slurry to be coated. The bottom of the tray is fed by a slurry cart, and the tray and the slurry cart are connected by inlet and outlet pipes. The tray is equipped with a first temperature sensor and a first level gauge for detecting the slurry temperature. The slurry cart is placed in a cooling liquid tank and is equipped with a second temperature sensor and a second level gauge. The second temperature sensor is located at the outlet of the slurry cart. The inlet and outlet pipes include an inlet pipe and an outlet pipe, and both the inlet pipe and the outlet pipe are equipped with a flow valve and a booster pump.

[0008] By adopting the above technical solution, the slurry for coating in the tray is supplied via a slurry cart. The slurry cart is connected to the tray via two sets of inlet and outlet pipes. Each inlet and outlet pipe is equipped with a flow valve and a booster pump, enabling circulation between the tray and the slurry cart. The flow valves control the amount of slurry delivered through the inlet and outlet pipes. When the first temperature sensor in the tray detects that the slurry temperature is too high, the slurry cooled by the cooling liquid tank in the slurry cart is output to the tray through the inlet pipe, and the excessively hot slurry in the tray is transported back to the slurry cart through the outlet pipe. This rapidly lowers the temperature of the slurry in the tray, improving coating performance. The second temperature sensor in the slurry cart monitors the temperature of the slurry inside in real time. When the temperature is too high, the cooling liquid tank is controlled to cool the slurry, reducing the risk of the slurry reaching the tray being too hot. Meanwhile, the amount of slurry in the tray decreases after coating. Once the first level gauge in the tray detects this, liquid is supplied from the slurry cart to the tray through the inlet pipe to ensure sufficient coating slurry. The second level gauge installed in the slurry cart can monitor the amount of slurry in the cart in real time and remind the operator to replenish the slurry in time when the level is too low.

[0009] Preferably, the liquid inlet of the material tray is located at the bottom, and a buffer chamber is installed on the liquid inlet. The buffer chamber includes a cover set on the bottom surface of the material tray, wherein the top of the cover has a hemispherical space facing the liquid inlet, and several sets of staggered partition plates are provided around the bottom of the cover.

[0010] The partition plates are arranged in a circular array around the bottom of the cover. The partition plates adopt an arc-shaped structure, with the center of the liquid inlet as the center of the arc.

[0011] By adopting the above technical solution, the buffer chamber installed at the liquid inlet of the material tray can buffer the slurry introduced into the material tray, preventing the slurry from surging and affecting the coating quality. After the slurry is introduced from the liquid inlet, it directly enters the hemispherical cover for buffering. The slurry flows from the cover to the surrounding area. The partition plates set at the bottom of the cover can effectively slow down the flow rate of the slurry and allow it to flow smoothly from the surrounding area to the surrounding area.

[0012] Preferably, the coolant tank includes a tank body and an external cooling water tank, wherein the slurry trolley is located inside the coolant tank, wherein support blocks for supporting the slurry trolley are provided around the bottom of the tank body, a cover is provided at the feeding port at the top of the slurry trolley, and a stirring mechanism is installed at the bottom of the slurry trolley, including a stirring motor and stirring blades, wherein the stirring motor is located inside the bottom plate of the slurry trolley, the stirring blades are installed on the output shaft of the stirring motor, and the output shaft is connected to the bottom of the slurry trolley through a sealed bearing.

[0013] There is a gap between the tank body and the slurry trolley. The water inlet and outlet on both sides of the tank body are connected to the cooling water tank through water inlet pipe and water outlet pipe respectively. A water pump is installed at one end of the water inlet pipe in the cooling water tank. The water inlet is located at the bottom of the side of the tank body, and the water outlet is located on the side of the tank body away from the water inlet. There are multiple sets of outlets at different heights, and each outlet is equipped with a regulating valve.

[0014] By adopting the above technical solution, a cooling water tank is connected to the outside of the coolant tank. The inlet pipe, through a water pump located at one end of the cooling water tank, introduces cooling water into the coolant tank. Cooling water in the coolant tank is then discharged through an outlet pipe, and pumped back to the cooling water tank. Specifically, the slurry cart is first installed on a support block at the bottom of the tank, and the slurry cart is then erected. Cooling water is introduced into the cooling water tank from one side and discharged from the other side. A stirring mechanism is installed at the bottom of the slurry cart to stir the slurry. During the cooling process, the slurry is thoroughly stirred to prevent particle deposition and improve the cooling effect. When the second level gauge in the slurry cart detects insufficient slurry, the filler cap is opened to add more slurry. Furthermore, the tank has multiple outlets at different heights. Adjustable valves can be opened according to the temperature and quantity of the slurry in the slurry cart to adjust the cooling water level in the tank, achieving different cooling effects.

[0015] Preferably, the connection between the liquid outlet pipe and the material tray is connected to the float via a flexible hose, wherein the port of the liquid outlet pipe is located below the liquid surface of the float and the material tray, and the first temperature sensor is located at the port of the liquid outlet pipe.

[0016] By adopting the above technical solution, when the coating machine's pick-up roller picks up slurry from the tray, it first contacts the surface of the slurry in the tray. This patent places the port of the liquid outlet pipe below the liquid surface by setting a float ball at the edge of the tray, and the first temperature sensor at the port can monitor the temperature of the slurry in the tray, thereby discharging the slurry with a higher surface temperature from the tray for circulation cooling, thus improving the circulation cooling efficiency of the slurry.

[0017] Preferably, the coolant tank and the bottom of the coolant reservoir are both fixedly mounted on the movable base, wherein the bottom of the movable base is provided with several sets of casters, and a control box is also installed at one end of the movable base.

[0018] By adopting the above technical solution, the coolant tank and the cooling water tank are fixed on a movable base, and a control box is configured on the movable base, which facilitates the movement of the slurry circulation device within the plant area, thereby meeting the usage needs of the slurry tanks in different locations.

[0019] Preferably, the control box is equipped with a PLC controller and a power interface, and the PLC controller is electrically connected to the entire slurry circulation device consisting of the material tray, slurry trolley, coolant tank and cooling water tank.

[0020] By adopting the above technical solution, the PLC controller in the control box controls the operation of the entire slurry circulation device according to the set program, and the power interface on the control box facilitates the connection of power during operation, thereby supplying power to its various components.

[0021] In summary, this application includes at least one of the following beneficial technical effects:

[0022] 1. The slurry circulation device in this application keeps the slurry in a low-temperature and constant-temperature working environment, and can monitor and provide feedback on the temperature in real time to control the temperature to maintain the performance of the slurry and prevent it from being affected by the environment. This results in better appearance and performance of the coated products, which can improve production yield and first-pass yield, increase market competitiveness, reduce costs, and reduce losses.

[0023] 2. The stirring mechanism located at the bottom of the slurry cart in this application can fully stir the slurry during the cooling process, thereby preventing particle deposition in the slurry and improving the cooling effect.

[0024] 3. The buffer chamber installed at the liquid inlet of the material tray in this application can buffer the slurry introduced into the material tray, avoid the slurry from surging and affecting the coating quality, and the partition plates distributed in a staggered manner at the bottom of the cover can effectively slow down the flow rate of the slurry and allow it to flow smoothly from all sides to all sides.

[0025] 4. In this application, when the slurry in the material tray is transported to the slurry trolley, a float is installed on the side of the liquid outlet pipe located inside the material tray. By setting the float, the port of the liquid outlet pipe is placed below the liquid surface, so that the slurry with a higher temperature in the material tray can be discharged. This keeps the liquid surface flat and does not roll while pumping high-temperature liquid, effectively improving the circulation and cooling efficiency of the slurry. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the overall structure of a slurry circulation temperature control device;

[0027] Figure 2 This is a three-dimensional structural diagram of the buffer chamber in a slurry circulation temperature control device.

[0028] Explanation of reference numerals in the attached drawings: 1. Material tray; 11. First temperature sensor; 12. First liquid level sensor; 13. Buffer chamber; 131. Cover; 132. Divider plate; 2. Slurry trolley; 21. Cooling liquid tank; 211. Tank body; 2111. Support block; 2112. Inlet; 2113. Outlet; 2114. Regulating valve; 212. Cooling water tank; 2121. Inlet pipe; 2122. Outlet pipe; 2123. Water pump; 22. Second temperature sensor; 23. Second liquid level sensor; 24. Stirring mechanism; 241. Stirring motor; 242. Stirring blade; 25. Cover; 3. Inlet and outlet pipes; 31. Flow valve; 32. Booster pump; 35. Inlet pipe; 36. Outlet pipe; 361. Float; 4. Movable base; 41. Casters; 5. Control box. Detailed Implementation

[0029] The following is in conjunction with the appendix Figure 1-2 This application will be described in further detail.

[0030] This application discloses a slurry circulation temperature control device.

[0031] Reference Figure 1 and Figure 2A slurry circulation temperature control device includes a slurry tray 1 for holding slurry to be coated. The bottom of the slurry tray 1 is fed by a slurry cart 2, and the slurry tray 1 and the slurry cart 2 are connected by inlet and outlet pipes 3. The slurry tray 1 is equipped with a first temperature sensor 11 and a first level gauge 12 for detecting the temperature of the slurry. The slurry cart 2 is placed in a cooling liquid tank 21 and is equipped with a second temperature sensor 22 and a second level gauge 23. The second temperature sensor is located at the outlet of the slurry cart 2. The inlet and outlet pipes 3 include an inlet pipe 35 and an outlet pipe 36, and both the inlet pipe 35 and the outlet pipe 36 are equipped with a flow valve 31 and a booster pump 32. The slurry for coating in tray 1 is supplied via slurry cart 2. Slurry cart 2 is connected to tray 1 through two sets of inlet and outlet pipes 3. Each inlet and outlet pipe 3 is equipped with a flow valve 31 and a booster pump 32, enabling circulation between tray 1 and slurry cart 2. The flow valve 31 controls the amount of slurry delivered through the inlet and outlet pipes 3. When the first temperature sensor 11 in tray 1 detects that the slurry temperature is too high, the slurry cooled by the cooling liquid tank 21 in slurry cart 2 is output to tray 1 through inlet pipe 35, and the excessively hot slurry in tray 1 is transported to slurry cart 2 through outlet pipe 36, thereby rapidly reducing the temperature of the slurry in tray 1 and improving slurry coating. The second temperature sensor 22 in slurry cart 2 can monitor the temperature of the slurry inside in real time. When the temperature is too high, it controls the cooling liquid tank 21 to cool it down, reducing the possibility of the slurry delivered to tray 1 being too hot. Meanwhile, the amount of slurry in tray 1 decreases after coating. The first level gauge 12 in tray 1 detects this and supplies liquid from slurry cart 2 to tray 1 through liquid inlet pipe 35 to ensure sufficient coating slurry. The second level gauge 23 installed in slurry cart 2 can monitor the amount of slurry in slurry cart 2 in real time and remind the operator to replenish slurry in time when the liquid level is too low.

[0032] Reference Figure 1 and Figure 2The liquid inlet of the material tray 1 is located at the bottom, and a buffer chamber 13 is installed on the liquid inlet. The buffer chamber 13 includes a cover 131 set on the bottom surface of the material tray 1. The top of the cover 131 has a hemispherical space facing the liquid inlet, and several sets of staggered partition plates 132 are arranged around the bottom of the cover 131. The partition plates 132 are arranged in a circular array around the bottom of the cover 131, and the partition plates 132 adopt an arc-shaped structure, with the center of the liquid inlet as the center. The buffer chamber 13 installed at the liquid inlet of the material tray 1 can buffer the slurry introduced into the material tray 1, preventing the slurry from surging and affecting the coating quality. After the slurry is introduced from the liquid inlet, it directly enters the hemispherical cover 131 for buffering. The slurry flows from the cover 131 to the surrounding areas. The staggered partition plates 132 at the bottom of the cover 131 can effectively slow down the flow rate of the slurry and allow it to flow smoothly from the surrounding areas.

[0033] Reference Figure 1 and Figure 2The coolant tank 21 includes a tank body 211 and an external cooling water tank 212. The slurry cart 2 is located inside the coolant tank. Support blocks 2111 are provided around the bottom of the tank body 211 to support the slurry cart 2. A cover 25 is provided at the feeding port at the top of the slurry cart 2. A stirring mechanism 24 is installed at the bottom of the slurry cart 2, including a stirring motor 241 and stirring blades 242. The stirring motor 241 is located inside the bottom plate of the slurry cart 2. The stirring blades 242 are installed on the output shaft of the stirring motor 241. There are three sets of stirring blades 242, which are evenly distributed at the upper, middle and lower positions of the slurry cart 2, so as to fully stir the slurry in the slurry cart 2. The output shaft is connected to the bottom of the slurry cart 2 through a sealed bearing. There is a gap between the tank body 211 and the slurry trolley 2. The inlet 2112 and outlet 2113 on both sides of the tank body 211 are connected to the cooling water tank 212 through the inlet pipe 2121 and the outlet pipe 2122, respectively. The inlet pipe 2121 is equipped with a water pump 2123 at one end of the cooling water tank 212. The inlet 2112 is located at the bottom side of the tank body 211, and the outlet 2113 is located on the side of the tank body 211 away from the inlet 2112. There are multiple sets of outlets at different heights. Each outlet 2113 is equipped with a regulating valve 2114. Coolant tank 21 is connected to cooling water tank 212 outside tank body 211. The inlet pipe 2121, driven by a water pump 2123 located at one end of cooling water tank 212, introduces cooling water into the cooling tank. Cooling water in coolant tank 21 is discharged from outlet pipe 2122 and pumped back to cooling water tank 212 by the water pump 2123 on outlet pipe 2122. Specifically, the slurry cart 2 is first installed on the support block 2111 at the bottom of tank body 211, and the slurry cart 2 is raised. Cooling water is introduced into cooling water tank 212 from one side and discharged from the other side. A stirring mechanism 24 is installed at the bottom of slurry cart 2 to stir the slurry. During the cooling process, the slurry is thoroughly stirred to prevent particle deposition and improve the cooling effect. When the second level gauge 23 in slurry cart 2 detects insufficient slurry, the slurry is added by opening the cover 25 of the feeding port. Furthermore, the outlet 2113 of the tank 211 is set with multiple sets of different heights. The adjustment valve 2114 can be opened according to the temperature and amount of slurry in the slurry cart 2, thereby adjusting the height of the cooling water level in the tank 211 to achieve different cooling effects.

[0034] Reference Figure 1 and Figure 2The outlet pipe 36 is connected to the material tray 1 via a flexible hose to a float 361. The port of the outlet pipe 36 is located below the liquid surface of the float 361 and the material tray 1. The first temperature sensor 11 is located at the port of the outlet pipe 36. When the coating machine's pick-up roller picks up slurry from the material tray 1, it first contacts the surface of the slurry in the material tray 1. This patent places the port of the outlet pipe 36 below the liquid surface by setting a float 361 at the edge of the material tray 1, and the first temperature sensor 11 at the port can monitor the temperature of the slurry in the material tray 1. This allows the slurry with a higher surface temperature in the material tray 1 to be discharged for circulation cooling, improving the circulation cooling efficiency of the slurry. The first temperature sensor 11 is powered by a built-in power supply and is connected to the PLC controller in the control box 5.

[0035] Reference Figure 1 and Figure 2 The coolant tank 21 and the cooling water tank 212 are both fixedly mounted on the movable base 4. The movable base 4 is equipped with several sets of casters 41 at its bottom, and a control box 5 is also installed at one end of the movable base 4. By fixing the coolant tank 21 and the cooling water tank 212 to the movable base 4 and configuring the control box 5 on the movable base 4, the slurry circulation device can be easily moved within the plant area to meet the usage needs of the slurry tanks in different locations.

[0036] Reference Figure 1 and Figure 2 The control box 5 contains a PLC controller and a power interface. The PLC controller is electrically connected to the entire slurry circulation device, which consists of the material tray 1, the slurry trolley 2, the coolant tank 21, and the cooling water tank 212. The PLC controller in the control box 5 controls the operation of the entire slurry circulation device according to the set program, and the power interface on the control box 5 facilitates power connection during operation, thereby supplying power to its various components.

[0037] Working principle: Cooling water tank 212 is connected to the coolant tank 21. Coolant is introduced through the inlet pipe 2121 under the action of water pump 2123 for cooling. After cooling, the coolant is transported back to the cooling water tank 212 through the water pump 2123 on the outlet pipe 2122. The slurry cart 2 is placed in the coolant tank 21. When in use, open the cover 25 on the top of the slurry cart 2 and pour the slurry into the slurry cart 2 from the feeding port. The booster pump 32 and the flow valve 31 control the slurry to be injected into the material tray 1 from the liquid inlet pipe 35. When the liquid level in the material tray 1 is insufficient or higher than the set value, it can be detected by the first liquid level sensor 12 and the amount of slurry transported on the liquid inlet pipe 35 and the liquid outlet pipe 36 can be controlled by the controller to adjust the liquid level in the material tray 1. In actual operation, the entire slurry circulation temperature control device operates according to the program set by the PLC controller in the control box 5. The first temperature sensor 11 is installed in the slurry tray 1. When the slurry tray 1 is in the coating operation, the first liquid level sensor 12 in the slurry tray 1 monitors the amount of slurry in it. When the slurry in the slurry tray 1 is insufficient, slurry is added to the slurry tray 1 from the slurry cart 2 through the liquid inlet pipe 35. When the temperature of the slurry in the slurry tray 1 is detected to exceed the set value, slurry is conveyed to the slurry tray 1 from the slurry cart 2. At the same time, the slurry with a higher temperature in the material tray 1 is output to the slurry cart 2 through the liquid outlet pipe 36, and the slurry in the slurry cart 2 is cooled by the cooling liquid tank 21; when the temperature of the slurry in the material tray 1 is detected to be lower than the set value, while the slurry cart 2 is conveying slurry to the material tray 1, the slurry with a lower temperature in the material tray 1 is output to the slurry cart 2 through the liquid outlet pipe 36, and the stirring fan blades 242 in the slurry cart 2 are used to stir all the slurry in the slurry cart 2 to make the overall slurry temperature uniform. The second temperature sensor 22 and the second liquid level sensor 23 installed in the slurry trolley 2 monitor the temperature and volume of the slurry inside in real time. If the temperature is too high, the cooling liquid tank 21 can be controlled to cool it down. If the temperature is lower than the warning value, the water pump 2123 and the regulating valve 2114 of the cooling liquid tank 21 can be adjusted to stop the water intake, drain the water in time to stop the water circulation cooling and heat preservation, and adjust the temperature of the slurry introduced into the slurry tray 1 of the slurry trolley 2. When the slurry is insufficient, the operator can be reminded to add slurry in time.

[0038] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A slurry circulation temperature control device characterized by: include The material tray (1) is used to place the slurry to be coated. The bottom of the material tray (1) is fed by the slurry cart (2), and the material tray (1) and the slurry cart (2) are connected by the inlet and outlet liquid pipes (3). The material tray (1) is equipped with a first temperature sensor (11) and a first liquid level sensor (12) for detecting the temperature of the slurry. The slurry trolley (2) is placed in the coolant tank (21). The slurry trolley (2) is equipped with a second temperature sensor (22) and a second level gauge (23). The second temperature sensor (22) is located at the outlet of the slurry trolley (2). The inlet and outlet pipes (3) include an inlet pipe (35) and an outlet pipe (36). Both the inlet pipe (35) and the outlet pipe (36) are equipped with a flow valve (31) and a booster pump (32).

2. The slurry circulation temperature control device according to claim 1, characterized in that: The liquid inlet of the material tray (1) is located at the bottom, and a buffer chamber (13) is installed on the liquid inlet. The buffer chamber (13) includes a cover (131) located on the bottom surface of the material tray (1). The top of the cover (131) is provided with a hemispherical space facing the liquid inlet, and a number of sets of staggered partition plates (132) are provided around the bottom of the cover (131).

3. The slurry circulation temperature control device according to claim 2, characterized in that: The partition plates (132) are arranged in a circular array around the bottom of the cover (131). The partition plates (132) adopt an arc-shaped structure, with the partition plates (132) arranged in an arc shape with the center of the liquid inlet as the center.

4. The slurry circulation temperature control device according to claim 1, characterized in that: The coolant tank (21) includes a tank body (211) and an external cooling water tank (212). The slurry cart (2) is located inside the coolant tank (21). Support blocks (2111) for supporting the slurry cart (2) are provided around the bottom of the tank body (211). A cover (25) is provided at the feeding port at the top of the slurry cart (2). A stirring mechanism (24) is installed at the bottom of the slurry cart (2), including a stirring motor (241) and stirring blades (242). The stirring motor is located inside the bottom plate of the slurry cart (2). The stirring blades (242) are installed on the output shaft of the stirring motor (241), and the output shaft is connected to the bottom of the slurry cart (2) through a sealed bearing.

5. The slurry circulation temperature control device according to claim 4, characterized in that: The tank (211) has a gap between its perimeter and the slurry cart (2). The inlet (2112) and outlet (2113) on both sides of the tank (211) are connected to the cooling water tank (212) through the inlet pipe (2121) and outlet pipe (2122) respectively. The inlet pipe (2121) is located at one end of the cooling water tank (212) and the outlet pipe (2122) is equipped with a water pump (2123). The inlet (2112) is located at the bottom side of the tank (211), and the outlet (2113) is located on the side of the tank (211) away from the inlet (2112). There are multiple sets of outlets at different heights. Each outlet (2113) is equipped with a regulating valve (2114).

6. The slurry circulation temperature control device according to claim 1, characterized in that: The connection end between the liquid outlet pipe (36) and the material tray (1) is connected to a float (361) via a flexible hose. The port of the liquid outlet pipe (36) is located below the liquid surface of the float (361) and the material tray (1). The first temperature sensor (11) is located at the port of the liquid outlet pipe (36).

7. The slurry circulation temperature control device according to claim 1, characterized in that: The bottom of the coolant tank (21) and the coolant tank (212) are both fixedly installed on the movable base (4). The movable base (4) is provided with several sets of casters (41) at the bottom, and a control box (5) is also installed at one end of the movable base (4).

8. The slurry circulation temperature control device according to claim 7, characterized in that: The control box (5) is equipped with a PLC controller and a power interface, and the PLC controller is electrically connected to the entire slurry circulation device consisting of the material tray (1), slurry trolley (2), coolant tank (21) and cooling water tank (212).

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