Filter cartridge replacement device and filter cartridge replacement method for a sand mill

Abstract

The application discloses a filter core replacing device and method for a sand mill, which comprises a material collecting tank, a pure water tank, and a discharge pipe. The material collecting tank is internally formed with a first cavity, and is provided with a feeding pipe which selectively communicates the first cavity with a discharging port of the sand mill. The pure water tank is internally formed with a second cavity, and is provided with a balance pipe which selectively communicates the first cavity with the second cavity and is adapted to flow liquid. The discharge pipe is connected to the bottom of the first cavity and the second cavity respectively, and selectively communicates with a feeding port of the sand mill. The filter core replacing device can quickly replace the filter core of the sand mill, greatly reducing the labor intensity of equipment personnel and production personnel, and improving work efficiency.

Description

Technical Field

[0001] This application relates to the field of sand mills, and in particular to a filter element replacement device and method for sand mills. Background Technology

[0002] In related technologies, the grinding process of lithium iron phosphate mainly relies on sand mills. However, in practical applications, sand mills have significant drawbacks: during material grinding, impurities easily mix in and gradually clog the filter element. Once the filter element is clogged, the material cannot pass through smoothly, causing a sharp increase in pressure inside the sand mill chamber, which in turn leads to overload shutdown, seriously affecting production continuity and equipment stability. To restore normal equipment operation, the filter element must be replaced, but the existing replacement method is extremely cumbersome. It requires disassembling the sand mill, transferring the internal material to the receiving box below, and finally removing the material to replace the filter element. This process is not only complex but also greatly increases the labor intensity of workers and reduces overall production efficiency. Summary of the Invention

[0003] This application aims to at least solve one of the technical problems existing in the prior art. Therefore, one objective of this application is to provide a filter element replacement device that enables rapid replacement of filter elements in a sand mill, significantly reducing the labor intensity of equipment and production personnel and improving work efficiency.

[0004] The second objective of this application is to propose a filter replacement method.

[0005] A filter element replacement device for a sand mill according to an embodiment of this application includes: a collection tank, wherein a first cavity is formed inside the collection tank, and a feed pipe is provided on the collection tank, the feed pipe selectively connecting the first cavity to the discharge port of the sand mill; a pure water tank, wherein a second cavity is formed inside the pure water tank, and a balance pipe is provided on the pure water tank, the balance pipe selectively connecting the first cavity to the second cavity, the balance pipe being adapted to allow liquid to flow through; and a discharge pipe, wherein the discharge pipe is respectively connected to the bottom of the first cavity and the second cavity, and the discharge pipe selectively connects to the feed port of the sand mill.

[0006] According to an embodiment of this application, a filter element replacement device for a sand mill can guide the material inside the sand mill through the discharge port to the collection tank and the pure water tank. After the material is discharged, the filter element of the sand mill can be replaced. After the filter element is replaced, the material in the collection tank and the pure water tank can be guided back into the sand mill through the discharge pipe, thereby completing the material transfer. Therefore, when the sand mill needs to replace the filter element, the filter element replacement device can facilitate the transfer of material, reduce the complexity of filter element replacement, thereby reducing the labor intensity of equipment personnel and production personnel and improving work efficiency.

[0007] In some embodiments of this application, the discharge pipe is provided with a discharge branch pipe, which is selectively connected to the feed port of the sand mill. The filter replacement device further includes a pump body, which is disposed on the discharge pipe and located upstream of the connection between the discharge branch pipe and the discharge pipe. The pump body is adapted to drive the liquid flow in the discharge pipe.

[0008] In some embodiments of this application, the discharge pipe includes a first pipe body and a second pipe body. The inlet end of the first pipe body is selectively connected to the first cavity, and the outlet end of the first pipe body is connected to the inlet end of the pump body. One inlet end of the second pipe body is selectively connected to the second cavity, and the other inlet end of the second pipe body is connected to the outlet end of the pump body. The outlet end of the second pipe body is provided with the discharge branch pipe.

[0009] In some embodiments of this application, the pure water tank is further provided with a vent pipe, which is selectively connected to the feed port or the filter cartridge outlet of the sand mill.

[0010] In some embodiments of this application, the pure water tank is further provided with a liquid level detection element, which extends into the second cavity and is adapted to detect the liquid level in the second cavity.

[0011] In some embodiments of this application, the collection tank is further provided with a feeding pipe and a venting pipe. The feeding pipe is connected to the first cavity and is adapted to deliver zirconium beads into the first cavity. The venting pipe is connected to the first cavity and is adapted to depressurize the first cavity.

[0012] In some embodiments of this application, the filter replacement device further includes: a base, on the upper surface of which the collection tank, the pure water tank and the pump body are disposed, and the base can selectively move between multiple sand mills; and a drive member disposed on the upper surface of the base, the drive member being adapted to drive the base to move between multiple sand mills.

[0013] The filter replacement method according to an embodiment of this application is described below.

[0014] According to the filter element replacement method of the present application embodiment, the filter element replacement method is applied to the filter element replacement device of the above embodiment. The filter element replacement method includes: determining whether the filter element is clogged; when the filter element is clogged, introducing the material in the sand mill into the collection tank and the pure water tank; replacing the filter element after the material in the sand mill is emptied; and after the filter element replacement is completed, introducing the material in the collection tank and the pure water tank into the sand mill.

[0015] According to the filter element replacement method of this application embodiment, the filter element replacement method can guide the material inside the sand mill to the collection tank and the pure water tank. After the material is discharged, the filter element of the sand mill can be replaced. After the filter element is replaced, the material in the collection tank and the pure water tank can be guided into the sand mill through the discharge pipe, thereby completing the material transfer. Therefore, when the sand mill needs to replace the filter element, the filter element replacement device can facilitate the transfer of material, reduce the complexity of filter element replacement, thereby reducing the labor intensity of equipment personnel and production personnel and improving work efficiency.

[0016] In some embodiments of this application, the step of introducing the material in the sand mill into the collection tank and the pure water tank when the filter element is clogged further includes: connecting the feed port of the sand mill to the second cavity to depressurize the sand mill; after depressurization is completed, connecting the discharge port of the sand mill to the feed pipe; and connecting the first cavity and the second cavity.

[0017] In some embodiments of this application, the step of introducing the material in the collection tank and the pure water tank into the sand mill after the filter element is replaced further includes: connecting the outlet of the filter element to the second cavity; connecting the discharge pipe to the feed port of the sand mill; and pressurizing the liquid and gas in the discharge pipe to mix them with the material and pressurize them into the sand mill.

[0018] Additional aspects and advantages of this application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of this application. Attached Figure Description

[0019] The above and / or additional aspects and advantages of this application will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which: Figure 1 This is a schematic diagram of the filter replacement device according to an embodiment of this application; Figure 2 This is a schematic diagram of the structure of a sand mill according to an embodiment of this application; Figure 3 This is a flowchart of a filter replacement method according to an embodiment of this application.

[0020] Figure label: 10. Filter replacement device; 11. Collection tank; 111. First cavity; 112. Feed pipe; 113. Feeding pipe; 114. Vent pipe; 12. Pure water tank; 121. Second chamber; 122. Balance tube; 123. Vent tube; 13. Discharge pipe; 131. Discharge branch pipe; 132. First pipe body; 133. Second pipe body; 14. Pump body; 15. Liquid level detection device; 16. Base; 17. Drive unit; 18. Central control room; 19. Air source; 20. Sand mill; 21. Discharge port; 22. Feed port; 23. Filter element; 24. Filter element discharge port; 25. Drive motor; 26. Reducer; 27. Pulley. Detailed Implementation

[0021] The embodiments of this application are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this application, and should not be construed as limiting this application.

[0022] The following is for reference. Figures 1-2 The present application describes a filter element replacement device 10 for a sand mill 20, comprising a collection tank 11, a pure water tank 12, and a discharge pipe 13.

[0023] The collecting tank 11 has a first cavity 111 inside, and a feed pipe 112 is provided on the collecting tank 11, selectively connecting the first cavity 111 to the discharge port 21 of the sand mill 20. The pure water tank 12 has a second cavity 121 inside, and a balance pipe 122 is provided on the pure water tank 12, selectively connecting the first cavity 111 to the second cavity 121. The balance pipe 122 is suitable for flowing liquid. The discharge pipe 13 is connected to the bottom of the first cavity 111 and the second cavity 121 respectively, and the discharge pipe 13 is selectively connected to the feed port 22 of the sand mill 20.

[0024] Currently, the grinding process of lithium iron phosphate mainly relies on sand mills. However, in practical applications, sand mills have significant drawbacks: during material grinding, impurities easily mix in and gradually clog the filter element. Once the filter element is clogged, material cannot pass through smoothly, causing a sharp increase in pressure inside the sand mill chamber, which in turn leads to overload shutdown, seriously affecting production continuity and equipment stability. To restore normal equipment operation, the filter element must be replaced, but the existing replacement method is extremely cumbersome. It requires disassembling the sand mill, transferring the internal material to the lower receiving box, and finally removing the material to replace the filter element. This process is not only complex but also greatly increases the labor intensity of workers and reduces overall production efficiency.

[0025] In response, this application provides a filter element replacement device 10, which can quickly replace the filter element 23 of the sand mill 20, greatly reducing the labor intensity of equipment personnel and production personnel and improving work efficiency.

[0026] Specifically, the filter replacement device 10 may include a collection tank 11, a pure water tank 12, and a discharge pipe 13. The collection tank 11 may have a first cavity 111 inside, and the collection tank 11 may be equipped with a feed pipe 112. The feed pipe 112 can selectively connect the first cavity 111 to the discharge port 21 of the sand mill 20. It is understood that the feed pipe 112 can guide the material inside the sand mill 20 into the first cavity 111 through the discharge port 21. The pure water tank 12 may have a second cavity 121 inside. Optionally, the second cavity... The volume of body 121 can be larger than the volume of the first cavity 111, and a balance pipe 122 can be provided on the pure water tank 12. The balance pipe 122 can selectively connect the first cavity 111 and the second cavity 121. The balance pipe 122 can be used for liquid flow. The balance pipe 122 can be connected to the upper part of the collection tank 11, thereby preventing the relatively dry material inside the collection tank 11 from entering the pure water tank 12. The top of the pure water tank 12 can be provided with a lid, and the operator can open the lid to connect the second cavity 121 to the outside.

[0027] In some embodiments, the volume of the collection tank 11 can be the same as the volume of the sand mill 20. When the sand mill 20 needs to replace the filter element 23, the wet material is first guided into the first chamber 111 through the feed pipe 112. The material and zirconium beads will sink to the bottom of the first chamber 111, and the water will float on the top of the first chamber 111. At this time, the water can enter the second chamber 121 through the balance pipe 122. Therefore, the second chamber 121 can play the role of storing water. This arrangement can avoid the problem of insufficient volume in the first chamber 111. For example, when there are not enough zirconium beads in the material, zirconium beads can be added to the first chamber 111. After adding zirconium beads, the volume of the material increases, and guiding the water into the second chamber 121 can avoid the problem of insufficient volume in the first chamber 111 causing the material in the sand mill 20 to be unable to be discharged. The material that sinks to the bottom of the first chamber 111 can be relatively dry material. In some embodiments, a valve may be provided on the balance pipe 122, and the valve may be opened or closed to connect or disconnect the first cavity 111 and the second cavity 121.

[0028] The discharge pipe 13 can be connected to the bottom of the first chamber 111 and the second chamber 121 respectively, and the discharge pipe 13 can be selectively connected to the feed port 22 of the sand mill 20. After the filter element 23 of the sand mill 20 is replaced, the material and water can be mixed in the discharge pipe 13 and guided into the interior of the sand mill 20 through the feed port 22. In some embodiments, the material and water can be pressurized by a power component to achieve flow. The power component can be a pump, a piston pressurizing device, an air compressor, or other structures. It is understood that the discharge pipe 13 can guide the material back into the interior of the sand mill 20.

[0029] In short, the filter element replacement device 10 of this application embodiment can guide the material inside the sand mill 20 to the collection tank 11 and the pure water tank 12 through the discharge port 21. After the material is discharged, the filter element 23 of the sand mill 20 can be replaced. After the filter element 23 is replaced, the material in the collection tank 11 and the pure water tank 12 can be guided back into the sand mill 20 through the discharge pipe 13, thereby completing the material transfer. Therefore, when the sand mill 20 needs to replace the filter element 23, the filter element replacement device 10 can facilitate the transfer of material, reduce the complexity of replacing the filter element 23, thereby reducing the labor intensity of equipment personnel and production personnel and improving work efficiency.

[0030] like Figure 1 As shown, in some embodiments of this application, the discharge pipe 13 may be provided with a discharge branch pipe 131. The discharge branch pipe 131 can be selectively connected to the feed port 22 of the sand mill 20. It can be understood that the discharge branch pipe 131 can connect the discharge pipe 13 to the feed port 22 of the sand mill 20. After the filter element 23 is replaced, the material and water can flow through the discharge pipe 13 to the discharge branch pipe 131, and then flow through the discharge branch pipe 131 into the sand mill 20. The discharge pipe 13 can play the role of mixing the material and water, and the discharge branch pipe 131 plays the role of guiding the mixed wet material into the sand mill 20. The filter element replacement device 10 can also include The pump body 14 can be installed on the discharge pipe 13 and can be located upstream of the connection between the discharge branch pipe 131 and the discharge pipe 13. The pump body 14 can drive the flow of liquid in the discharge pipe 13. By arranging the pump body 14 upstream of the connection between the discharge branch pipe 131 and the discharge pipe 13, it can be ensured that the pump body 14 can drive the water inside the discharge pipe 13 to flow, and prevent materials from entering the pump body 14 and affecting the normal operation of the pump body 14. The pump body 14 can pressurize the water inside the discharge pipe 13, thereby providing power for the flow of water. At the same time, it can also drive the material in the discharge branch pipe 131 to be discharged into the sand mill 20.

[0031] like Figure 1As shown, in some embodiments of this application, the discharge pipe 13 may include a first pipe body 132 and a second pipe body 133. The inlet end of the first pipe body 132 can selectively communicate with the first cavity 111, and the outlet end of the first pipe body 132 can communicate with the inlet end of the pump body 14. The first pipe body 132 can be connected to the inlet ends of the first cavity 111 and the pump body 14. The contents of the first pipe body 132 can be entirely liquid. The second pipe body 133 may have two inlet ends, namely a first inlet end and a second inlet end. The first inlet end of the second pipe body 133 can selectively communicate with the second cavity 121, and the second inlet end of the second pipe body 133 can communicate with the pump body 14. The outlet end of the pump body 14 is connected, and the outlet end of the second pipe body 133 can be provided with a discharge branch pipe 131. The drier material in the second cavity 121 can enter the interior of the second pipe body 133 through the first inlet end of the second pipe body 133. The water in the pump body 14 can enter the interior of the second pipe body 133 through the second inlet end of the second pipe body 133. The drier material can be mixed with water in the second pipe body 133. The pump body 14 pressurizes the mixture so that it can be guided through the second pipe body 133 to the discharge branch pipe 131, and then guided back to the interior of the sand mill 20 through the discharge branch pipe 131, thereby completing the material transfer.

[0032] like Figure 1As shown, in some embodiments of this application, a vent pipe 123 may also be provided on the pure water tank 12. A valve may be provided on the vent pipe 123. In some embodiments, the valve may be a stainless steel ball valve. The vent pipe 123 may be selectively connected to the feed port 22 or the filter cartridge outlet 24 of the sand mill 20. Before replacing the filter cartridge 23, the vent pipe 123 needs to be connected to the feed port 22 of the sand mill 20. Optionally, the vent pipe 123 and the feed port 22 of the sand mill 20 may be connected via a flexible hose. In this case, the pressure inside the sand mill 20 can be relieved through the vent pipe 123. It should be noted that, since the internal pressure of the sand mill 20 increases after the filter cartridge 23 is clogged, by connecting the vent pipe 123 to the feed port 22 of the sand mill 20, the gas inside the sand mill 20 can flow to the second chamber 121 through the flexible hose. Inside the sand mill 20, while the gas inside is being discharged into the second chamber 121, the operator can open the lid of the pure water tank 12 to release the gas from the second chamber 121, thus balancing the pressure inside the second chamber 121 and reducing the pressure inside the sand mill 20. This prevents the material from being discharged too quickly due to excessive pressure, which could damage the device. After the filter element 23 is replaced, the vent pipe 123 needs to be connected to the filter element outlet 24. It should be noted that after the filter element 23 is replaced, the material needs to be re-pumped into the sand mill 20. At this time, by connecting the vent pipe 123 to the filter element outlet 24, air inside the sand mill 20 can be introduced into the second chamber through the filter element outlet 24 when the material is fed into the sand mill 20. This avoids the problem of increased internal pressure when the material flows into the sand mill 20, which could make it difficult to feed the material. In some embodiments, the pure water tank 12 is also provided with a water pipe, which can be used to replenish water into the second cavity 121. Optionally, the water pipe and the air pipe 123 can be constructed as the same pipe to achieve integrated design.

[0033] like Figure 1 As shown, in some embodiments of this application, a liquid level detection element 15 is also provided on the pure water tank 12. The liquid level detection element 15 can extend into the second cavity 121 and can be used to detect the liquid level in the second cavity 121. In some embodiments, the liquid level detection element 15 can be a liquid level gauge. When the water in the first cavity 111 enters the second cavity 121 through the balance pipe 122, the liquid level detection element 15 can detect the liquid level in the second cavity 121 and determine whether the material in the sand mill 20 is emptied by the change in liquid level. When the liquid level detection element 15 no longer shows obvious changes, it can be determined that the mixture of material and zirconium beads has flowed into the collection tank 11. It should be noted that emptying can mean that all the material flows into the collection tank 11, or that part of the material flows into the collection tank 11, and the remaining material in the sand mill 20 does not affect the replacement of the filter element 23.

[0034] like Figure 1 As shown, in some embodiments of this application, the collection tank 11 may also be provided with a feeding pipe 113 and a venting pipe 114. The feeding pipe 113 can be connected to the first cavity 111 and can be used to deliver zirconium beads into the first cavity 111. When replacing the filter element 23, if there are not enough zirconium beads in the first cavity 111, the operator can deliver zirconium beads into the first cavity 111 through the feeding pipe 113. The venting pipe 114 can be connected to the first cavity 111 and can depressurize the first cavity 111. When the pressure in the first cavity 111 is detected to be too high, the operator can open the venting pipe 114 to release the air in the first cavity 111. Externally, this reduces the pressure inside the first chamber 111, ensuring that the material can flow into the first chamber 111 by gravity. In other embodiments, the operator can depressurize the sand mill 20 through the first chamber 111. Since the internal pressure of the sand mill 20 increases after the filter element 23 is blocked, by connecting the feed pipe 112 with the feed port 22 of the sand mill 20, the gas inside the sand mill 20 can flow into the first chamber 111 through the feed pipe 112. At this time, the operator opens the vent pipe 114 to discharge the gas in the first chamber 111, reducing the pressure inside the first chamber 111 and achieving the effect of depressurizing the inside of the sand mill 20.

[0035] like Figure 1 As shown, in some embodiments of this application, the filter element replacement device 10 further includes a base 16 and a drive element 17. The upper surface of the base 16 may be provided with a collection tank 11, a pure water tank 12 and a pump body 14. The base 16 can selectively move between multiple sand mills 20 to facilitate the replacement of the filter elements 23 of the multiple sand mills 20. The drive element 17 may be provided on the upper surface of the base 16 and can be used to drive the base 16 to move between multiple sand mills 20. Optionally, the drive element 17 may be a motor. In some embodiments, the bottom of the base 16 may be provided with a slide rail or pulley for mounting the base 16 on a fixed track, so that the base 16 can replace the filter element 23 of the sand mill 20 according to a certain trajectory. In this way, the material in the sand mill 20 can be collected simply by reversing the connector. Optionally, the base 16 can be remotely controlled to travel along a predetermined route. The base 16 can be connected according to the number of the sand mill 20 to switch the air source 19, which can facilitate the collection of materials from any sand mill 20 and save manpower.

[0036] like Figure 1 and Figure 2As shown, in some embodiments of this application, the filter element replacement device 10 further includes a central control room 18. The central control room 18 can control the drive component 17 to open, so that the motor drives the base 16 to repeatedly replace the remaining sand mills 20 according to the trajectory. This setting can save manpower, reduce labor intensity, and quickly meet production needs. The filter element replacement device 10 may also include multiple air sources 19, which can be connected to the pump body 14. The pump body 14 uses compressed air as a power source to provide power to the water in the first pipe 132, so that the water and materials can be fully mixed and transported into the sand mill. The sand mill 20 also includes a drive motor 25, a reducer 26, and a pulley 27. The drive motor 25 can drive the pulley 27 to move through the reducer 26. The sand mill 20 has a filter element 23, a feed port 22, and a discharge port 21. The filter element 23 has a filter element discharge port 24.

[0037] In a specific embodiment, when the material is being ground inside the sand mill, impurities in the material clog the filter element 23, causing the pressure in the sand mill 20 to rise and triggering an alarm. At this time, the filter element 23 of the sand mill 20 needs to be replaced. The operator first connects the vent pipe 123 to the feed port 22 of the sand mill 20. The vent pipe 123 and the feed port 22 of the sand mill 20 can be connected via a flexible hose, allowing the gas inside the sand mill 20 to flow through the hose into the second chamber 121. Simultaneously, while the gas inside the sand mill 20 is being discharged into the second chamber 121, the operator opens the lid of the pure water tank 12 to release the gas from the second chamber 121. At this time, the pressure inside the sand mill 20 can be reduced. Pressure can be released through the vent pipe 123, or the operator can connect the feed pipe 112 to the feed port 22 of the sand mill 20. Gas inside the sand mill 20 flows through the feed pipe 112 to the first chamber 111. Simultaneously, the operator opens the vent pipe 114 to release the gas from the first chamber 111. At this time, the pressure inside the sand mill 20 can be released through the vent pipe 114. After the pressure is released, the operator connects the feed pipe 112 to the discharge port 21 of the sand mill 20. The first chamber 111 and the second chamber 121 are connected through the balance pipe 122. The material inside the sand mill 20 is introduced into the first chamber 111 through the discharge port 21. It should be noted that the sand mill... The material in mill 20 can flow into the first chamber 111 by gravity. Operators can pump air into the feed port 22 of the mill 20 as needed to facilitate faster material flow into the first chamber 111. During this process, operators can judge whether the material in the mill 20 has been emptied by observing changes in the liquid level. When the liquid level detector 15 no longer shows significant changes, it can be determined that the mixture of material and zirconium beads has been successfully conveyed. At this point, the feed pipe 112 can be disconnected from the discharge port 21 of the mill 20 (i.e., the stainless steel ball valve at the discharge port 21). Operators can then disassemble and replace the filter element 23. After cleaning and replacing the filter element 23, it is installed in the mill. On the machine 20, the operator can connect the filter element outlet 24 to the air pipe 123. After the connection is completed, the operator connects the discharge pipe 13 to the feed port 22 of the sand mill 20 and notifies the central control room 18 to open the pneumatic valve connected to the pump body 14. The pump body 14 then presses the mixture of water, material and zirconium beads in the discharge pipe 13 into the sand mill 20. It should be noted that the water in the pure water tank 12 and the compressed air can impact the mixture of water, material and zirconium beads in the discharge pipe 13 under the drive of the pump body 14, causing it to flow back into the sand mill 20. The water level in the pure water tank 12 should not be higher than the outlet of the balance pipe 122 to prevent the water in the pure water tank 12 from flowing back into the collection tank 11.During this process, the central control room 18 needs to determine the material zirconium bead mixture based on the changes in the liquid level gauge. When the liquid level does not change, the pipeline between the inlet end of the pump body 14 and the second chamber 121 is disconnected, and the pump body 14 continues to pump for a period of time using its ability to run dry, thus ensuring a more thorough pumping. After all the material and zirconium bead mixture has been pumped into the sand mill 20, the central control room 18 shuts off the pump body 14 and valves, disconnects the connecting pipelines and other auxiliary parts, and uses remote control to guide the base 16 to travel along a specific track. The base 16 is connected according to the number of the sand mill 20, allowing for switching of the air source 19. This facilitates material collection from any sand mill 20, saving manpower, reducing labor intensity, and quickly meeting production needs.

[0038] The following is for reference. Figure 3 This application describes a filter replacement method according to an embodiment.

[0039] According to the filter element replacement method of this application embodiment, the filter element replacement method is applied to the filter element replacement device of the above embodiment. The filter element replacement method includes: S1, determining whether the filter element is clogged; S2, when the filter element is clogged, introducing the material in the sand mill into the collection tank and the pure water tank; S3, replacing the filter element after the material in the sand mill is emptied; S4, after the filter element replacement is completed, introducing the material in the collection tank and the pure water tank into the sand mill.

[0040] Specifically, the filter replacement method includes the following steps: S1. Determine if the filter element is clogged. Operators can accurately determine the clogging status of the sand mill filter element using early warning signals. When the filter element is working normally, system parameters such as pressure and flow rate are within a stable range. Once the filter element becomes clogged, fluid flow is obstructed, causing an abnormal increase in pressure and a decrease in flow rate at the sand mill's output pipe. The equipment's built-in pressure and flow sensors will detect these changes and quickly trigger early warning signals, such as flashing indicator lights, sounding alarms, or pop-up messages from the control system. Based on these intuitive early warning signals, operators can quickly determine if the filter element is clogged and take timely cleaning or replacement measures to ensure stable operation of the sand mill.

[0041] S2. When the filter element is clogged, the material inside the sand mill is directed into the collection tank and the pure water tank. When the filter element becomes clogged, the operator can control the filter element replacement device to direct the material inside the sand mill into the collection tank and the pure water tank, thereby emptying the material inside the sand mill.

[0042] S3. Replace the filter element after the material in the sand mill has been emptied. After the material in the sand mill has been emptied, the operator can use tools to disassemble the clogged filter element and install a new filter element.

[0043] S4. After the filter element is replaced, transfer the material from the collection tank and the pure water tank into the sand mill. Once the filter element is replaced, the operator can control the filter element replacement device to transfer the material from the collection tank and the pure water tank into the sand mill, thus completing the material transfer and providing a solid guarantee for subsequent stable and high-quality grinding operations.

[0044] In short, the filter element replacement method of this application embodiment can guide the material inside the sand mill to the collection tank and the pure water tank. After the material is discharged, the filter element of the sand mill can be replaced. After the filter element is replaced, the material in the collection tank and the pure water tank can be guided back into the sand mill through the discharge pipe, thereby completing the material transfer. Therefore, when the sand mill needs to replace the filter element, the filter element replacement device can facilitate the transfer of material, reduce the complexity of filter element replacement, thereby reducing the labor intensity of equipment personnel and production personnel and improving work efficiency.

[0045] In some embodiments of this application, S2, when the filter element is clogged, guiding the material in the sand mill into the collection tank and the pure water tank further includes: S21. Connect the feed port of the sand mill to the second chamber to release pressure inside the sand mill. Before replacing the filter element, the vent pipe needs to be connected to the feed port of the sand mill. At this time, the pressure inside the sand mill can be released through the vent pipe, thereby avoiding the problem of excessive pressure causing material to be discharged too quickly and damaging the device.

[0046] S22. After the pressure is released, connect the discharge port of the sand mill to the feed pipe. After the pressure is released, the operator can connect the discharge port of the sand mill to the feed pipe. The material in the sand mill can flow through the discharge port to the feed pipe, and then flow into the collection tank and the pure water tank.

[0047] S23. Connect the first and second chambers. Operators can open the balance pipe, which connects the first and second chambers. Wet material is guided into the first chamber through the feed pipe. The material and zirconium beads will sink to the bottom of the first chamber, while water will float to the top. At this point, water can enter the second chamber through the balance pipe. Therefore, the second chamber can function as a water reservoir, preventing insufficient volume in the first chamber. It should be noted that S22 and S23 do not have a specific order; they can be performed simultaneously.

[0048] In some embodiments of this application, S4, after the filter element is replaced, introducing the material from the collection tank and the pure water tank into the sand mill further includes: S41. Connect the filter element outlet to the second chamber. After replacing the filter element, the vent pipe needs to be connected to the filter element outlet to ensure that the internal pressure of the sand mill remains balanced when the material is transported into the sand mill.

[0049] S42. Connect the discharge pipe to the feed port of the sand mill. The discharge pipe can be equipped with a discharge branch pipe, which connects the discharge pipe to the feed port of the sand mill. After the filter element is replaced, the material and water can flow through the discharge pipe to the discharge branch pipe, and then through the discharge branch pipe into the sand mill. The discharge pipe can mix the material and water, while the discharge branch pipe can guide the mixed wet material into the sand mill.

[0050] S43. Pressurize the liquid and gas in the discharge pipe to mix them with the material and force them into the sand mill. The filter replacement device may also include a pump body, which drives the flow of liquid in the discharge pipe. By arranging the pump body upstream of the connection between the discharge branch pipe and the discharge pipe, it can be ensured that the pump body can drive the water inside the discharge pipe to flow, preventing material from entering the pump body and affecting its normal operation. The pump body can pressurize the water inside the discharge pipe, thereby providing power for the water flow, and can also drive the material in the discharge branch pipe to be discharged into the sand mill.

[0051] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0052] In the description of this application, "first feature" and "second feature" may include one or more of the features.

[0053] In the description of this application, "multiple" means two or more.

[0054] In the description of this application, the first feature being "above" or "below" the second feature may include the first and second features being in direct contact, or the first and second features being in contact through another feature between them.

[0055] In the description of this application, the terms "above," "over," and "on top" for the first feature and the second feature include the first feature being directly above or diagonally above the second feature, or simply indicate that the first feature is at a higher horizontal level than the second feature.

[0056] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0057] Although embodiments of this application have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of this application, the scope of which is defined by the claims and their equivalents.

Claims

1. A filter element replacement device for a sand mill, characterized in that, include: A collection tank (11) has a first cavity (111) inside it. A feed pipe (112) is provided on the collection tank (11). The feed pipe (112) selectively connects the first cavity (111) to the outlet (21) of the sand mill (20). A pure water tank (12) has a second cavity (121) inside it. A balance tube (122) is provided on the pure water tank (12). The balance tube (122) selectively connects the first cavity (111) and the second cavity (121). The balance tube (122) is suitable for the flow of liquid. The discharge pipe (13) is connected to the bottom of the first cavity (111) and the second cavity (121) respectively, and the discharge pipe (13) is selectively connected to the feed port (22) of the sand mill (20).

2. The filter element replacement device for a sand mill according to claim 1, characterized in that, The discharge pipe (13) is provided with a discharge branch pipe (131), which is selectively connected to the feed port (22) of the sand mill (20). The filter element replacement device further includes: Pump body (14) is disposed on the discharge pipe (13) and located upstream of the connection between the discharge branch pipe (131) and the discharge pipe (13). The pump body (14) is adapted to drive the flow of liquid in the discharge pipe (13).

3. The filter element replacement device for a sand mill according to claim 2, characterized in that, The discharge pipe (13) includes a first pipe body (132) and a second pipe body (133). The inlet end of the first pipe body (132) is selectively connected to the first cavity (111), the outlet end of the first pipe body (132) is connected to the inlet end of the pump body (14), one inlet end of the second pipe body (133) is selectively connected to the second cavity (121), the other inlet end of the second pipe body (133) is connected to the outlet end of the pump body (14), and the outlet end of the second pipe body (133) is provided with the discharge branch pipe (131).

4. The filter element replacement device for a sand mill according to claim 1, characterized in that, The pure water tank (12) is also provided with a vent pipe (123), which is selectively connected to the feed port (22) or the filter outlet (24) of the sand mill (20).

5. The filter element replacement device for a sand mill according to claim 4, characterized in that, The pure water tank (12) is also provided with a liquid level detection element (15), which extends into the second cavity (121) and is suitable for detecting the liquid level in the second cavity (121).

6. The filter element replacement device for a sand mill according to claim 1, characterized in that, The collection tank (11) is also provided with a feeding pipe (113) and a venting pipe (114). The feeding pipe (113) is connected to the first cavity (111) and is adapted to deliver zirconium beads into the first cavity (111). The venting pipe (114) is connected to the first cavity (111) and is adapted to depressurize the first cavity (111).

7. The filter element replacement device for a sand mill according to claim 2, characterized in that, Also includes: The base (16) has the collection tank (11), the pure water tank (12) and the pump body (14) disposed on its upper surface. The base (16) can be selectively moved between multiple sand mills (20). A drive member (17) is disposed on the upper surface of the base (16) and is adapted to drive the base (16) to move between the plurality of the sand mills (20).

8. A filter element replacement method, wherein the filter element replacement method is applied to the filter element replacement device as described in any one of claims 1-7, characterized in that, The filter replacement method includes: Determine if the filter is clogged; When the filter element is clogged, the material in the sand mill is directed into the collection tank and the pure water tank; Replace the filter element after the material inside the sand mill has been emptied. After the filter element is replaced, the materials in the collection tank and the pure water tank are introduced into the sand mill.

9. The filter element replacement method according to claim 8, characterized in that, The step of guiding the material in the sand mill into the collection tank and the pure water tank when the filter element is clogged also includes: The feed port of the sand mill is connected to the second cavity to relieve pressure inside the sand mill; After the pressure is released, connect the discharge port of the sand mill to the feed pipe; Connect the first cavity and the second cavity.

10. The filter element replacement method according to claim 8, characterized in that, After the filter element is replaced, the process of introducing the material from the collection tank and the pure water tank into the sand mill also includes: The outlet of the filter element is connected to the second cavity; Connect the discharge pipe to the feed port of the sand mill; The liquid and gas in the discharge pipe are pressurized to mix with the material and then forced into the sand mill.

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