A filter cleaning machine for pressurized permanent magnet waste liquid recovery and treatment

Abstract

The present invention relates to the field of permanent magnet processing technology, and in particular to a filter cleaning machine for pressurized permanent magnet waste liquid recovery and treatment. The present invention adopts a switching pipeline design, adds a boosting cylinder, and sets a sealing plate based on magnetic adsorption at the inlet of the liquid guide tube. The filtered waste liquid causes the piston plate to move down first and drives the compression spring to compress. When the piston plate moves to a critical position, the pull rope pulls the sealing plate to open the liquid guide tube. In this way, while the boosting cylinder is filled with water at one end, the piston plate is moved up based on the action of the tension spring and another driving force for the liquid is formed, thereby increasing the water pressure of the waste liquid discharged from the liquid guide tube and enhancing the backwashing effect on the filter screen one. The present invention adopts a transmission design to match the connection state of the three-way valve with the position of the movable partition plate to achieve the switching of wastewater filtration and backwashing of the filter screen one, reducing the control difficulty of maintenance personnel.

Description

Technical Field

[0001] The invention relates to the technical field of permanent magnet processing, in particular to a pressurized filter cleaning machine for recycling and treating waste liquid of permanent magnets. Background Art

[0002] In the field of permanent magnet production, the surface of the sintered permanent magnet products is uneven and has poor finish, and needs to be polished on a water-based grinder. In the prior art, the wastewater flowing out of the grinder needs to be discharged into a wastewater pool for further treatment before it can be discharged. In this regard, our company has applied for an invention patent - "A wastewater treatment device after permanent magnet polishing" (application number CN201910466474.8) discloses a wastewater treatment device after permanent magnet polishing, which is used to recycle and reuse the residual residue in the wastewater after permanent magnet polishing.

[0003] However, when our company used this device, although it could improve the efficiency of wastewater filtration and purification, due to the large amount of wastewater, the purification components such as the steady flow filter plate would accumulate impurities and cause blockage after a certain period of time, which would reduce the filtration and purification efficiency. Since the existing structure does not have a convenient design for removing the purification components, maintenance personnel need to shut down the device and disassemble it, which is quite troublesome.

[0004] Therefore, our company considered using backwashing measures to clean the filter. After redesign, it was found that if a switching structure was used to divert wastewater to the other side of the filter for backwashing, due to the low wastewater flow rate, the water flow impact force would be insufficient, resulting in poor backwashing effect. Summary of the invention

[0005] Based on this, it is necessary to provide a pressurized permanent magnet waste liquid recovery and treatment filter cleaning machine to address the problem that the existing switching design has insufficient water flow impact force and poor backwashing effect.

[0006] The present invention is implemented by the following technical solutions:

[0007] The invention discloses a pressurized filter screen cleaning machine for recycling and treating waste liquid of a permanent magnet, comprising a waste liquid inlet pipe, a three-way valve, a treatment chamber, a switching component, a pressurizing cylinder and a pressurizing component.

[0008] The waste liquid inlet pipe is used to pass the waste liquid from the permanent magnet processing. The inlet end of the three-way valve is connected to the waste liquid inlet pipe, the outlet end 1 is connected to the branch pipe 1, and the outlet end 2 is connected to the branch pipe 2. The branch pipe 2 is provided with a filter screen 2. The processing chamber is a hollow cylindrical cavity arranged horizontally. One side of the top of the processing chamber is connected to the branch pipe 1. A movable partition is provided in the processing chamber, and a filter screen 1 is provided on one side of the movable partition for filtering the waste liquid. One side of the bottom of the processing chamber is connected to a liquid outlet pipe for recovering the filtered waste liquid. The other side of the bottom of the processing chamber is connected to a slag discharge pipe for discharging impurities after backwashing. The switching component is connected to the movable partition and the three-way valve in a transmission manner, which is used to drive the movable partition to rotate and synchronously switch the three-way valve position state to realize the switching of wastewater filtration and backwashing of filter screen 1. The top of the booster cylinder is connected to the branch pipe 2. The top of the booster cylinder is also connected to the other side of the top of the processing chamber through a liquid guide pipe for backwashing filter screen 1. The boosting assembly is arranged in the boosting cylinder and is used for boosting the backwashing pipe when the waste liquid inlet pipe is connected to the second branch pipe.

[0009] Among them, the boosting component includes a sealing plate, a piston plate, a pull rope, and a support rod. The sealing plate is used to perform active sealing on the backwash pipe. A magnetic ring is provided at the inner top of the boosting cylinder corresponding to the inlet of the backwash pipe, which is used to magnetically adsorb the sealing plate. A longitudinal slide rail is provided on the inner wall of the boosting cylinder, and the slide rail is located above the piston plate, and a limit block is provided at the bottom end thereof; a slider is provided on the slide rail, and the slider is connected to the sealing plate. The piston plate is connected to the inner bottom of the boosting cylinder through a compression spring, and is used to move up and down in the boosting cylinder under the action of hydraulic pressure and compression spring. One end of the pull rope is connected to the sealing plate, and the other end is connected to the piston plate, which is used to pull the sealing plate away from the magnetic ring when the liquid above the piston plate increases to a critical value. The support rod is used to lift the sealing plate when the tension spring is reset, and to allow the sealing plate to be adsorbed by the magnetic ring.

[0010] The pressurized permanent magnet waste liquid recovery and treatment filter cleaning machine is implemented according to the method or process of the embodiment of the present disclosure.

[0011] Compared with the prior art, the present invention has the following beneficial effects:

[0012] 1. The present invention adopts a switching pipeline design, adds a booster cylinder, and sets a sealing plate based on magnetic adsorption at the inlet of the liquid guide tube. The filtered waste liquid causes the piston plate to move down first and drives the compression spring to be compressed. When the piston plate moves to the critical position, the pull rope pulls the sealing plate to open the liquid guide tube. In this way, while the booster cylinder is filled with water at one end, the piston plate is moved up based on the action of the tension spring and forms another driving force for the liquid, thereby increasing the water pressure of the waste liquid discharged from the liquid guide tube and enhancing the backwashing effect on the filter screen.

[0013] 2. The present invention adopts a transmission design to match the connection state of the three-way valve with the position of the movable partition to achieve the switching of wastewater filtration and filter backwashing, reducing the control difficulty of maintenance personnel.

[0014] 3. The present invention also arranges a switch valve based on a transmission design on the slag discharge pipe, so that the switch state of the switch valve is configured with the position of the movable partition. When filtering wastewater, the switch valve is closed to prevent foreign matter from entering the processing bin from the slag discharge pipe. When the filter screen is backwashed, the switch valve is opened to ensure the smooth discharge of impurities. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a structural diagram of a pressurized filter cleaning machine for recycling and treating waste liquid of permanent magnets according to the present invention;

[0016] Figure 2 for Figure 1 The workstation diagram of the filter cleaning machine for wastewater treatment;

[0017] Figure 3 for Figure 2 A magnified view of the mid-boost assembly;

[0018] Figure 4 for Figure 1 The working position diagram of the filter cleaning machine in the backwashing stage;

[0019] Figure 5 for Figure 1 The working position diagram of the filter cleaning machine in the backwash stage 2;

[0020] Figure 6 for Figure 5 A magnified view of the mid-boost assembly;

[0021] Figure 7 for Figure 1 The working position diagram of the filter cleaning machine in the backwash stage three;

[0022] Figure 8 for Figure 7 Enlarged view of the boost assembly.

[0023] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0024] 100. Processing bin, 101. Waste liquid inlet pipe, 102. Branch one, 103. Liquid outlet pipe, 104. Slag discharge pipe, 105. Branch two, 106. Three-way valve, 107. Switch valve, 201. Booster cylinder, 202. Liquid guide pipe, 203. Filter screen two, 204. Slag discharge port, 300. Mounting shaft, 301. Movable partition, 302. Filter screen one, 303. Bevel gear two, 400. Piston plate, 401. Compression spring, 402. Sealing plate, 403. Magnetic ring, 404. Pull rope, 405. Support rod, 406. Sliding block, 407. Slide rail, 408. Limit block, 500. Driving motor, 501. Active shaft, 502. Bevel gear one, 600. Flow meter. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0026] It should be noted that when a component is referred to as being "mounted on" another component, it may be directly on the other component or there may be a central component. When a component is considered to be "set on" another component, it may be directly set on the other component or there may be a central component at the same time. When a component is considered to be "fixed to" another component, it may be directly fixed on the other component or there may be a central component at the same time.

[0027] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art to which the present invention belongs. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "or / and" used herein includes any and all combinations of one or more of the related listed items.

[0028] Please see Figure 1 , is a structural diagram of a pressurized permanent magnet waste liquid recovery and treatment filter screen cleaning machine of this embodiment. This embodiment discloses a pressurized permanent magnet waste liquid recovery and treatment filter screen cleaning machine, including a waste liquid inlet pipe 101, a three-way valve 106, a processing chamber 100, a switching component, a pressurizing cylinder 201, and a pressurizing component.

[0029] like Figure 1 As shown, the waste liquid inlet pipe 101 is used to pass the waste liquid from the permanent magnet processing. The inlet end of the three-way valve 106 is connected to the waste liquid inlet pipe 101, the outlet end 1 is connected to the branch pipe 102, and the outlet end 2 is connected to the branch pipe 2 105. The three-way valve 106 plays the role of switching the pipeline connection. It should be noted that in this embodiment, the three-way valve 106 is only used in two positions, that is, the inlet end is connected to the outlet end 1, and the inlet end is connected to the outlet end 2.

[0030] The processing chamber 100 is a hollow cylindrical cavity arranged horizontally. The top side of the processing chamber 100 is connected to the branch pipe 102. A movable partition 301 is installed in the processing chamber 100. Figure 2 The movable partition 301 is rotatably connected in the processing chamber 100 through the installation shaft 300, and divides the processing chamber 100 into semi-cylindrical chamber 1 and semi-cylindrical chamber 2.

[0031] A filter screen 302 is provided on one side of the movable partition 301 for filtering the waste liquid. Specifically, one end of the filter screen 302 is connected to the movable partition 301, and the other end is overlapped with the inner wall of the processing chamber 100. Of course, the other end of the filter screen 302 can also be set as a scraper, and the scraper is overlapped with the inside of the processing chamber 100.

[0032] A liquid outlet pipe 103 is connected to one side of the bottom of the processing chamber 100 for recovering the filtered waste liquid; a slag discharge pipe 104 is connected to the other side of the bottom of the processing chamber 100 for discharging impurities after backwashing.

[0033] The switching component is connected to the movable partition 301 and the three-way valve 106 for driving the movable partition 301 to rotate and synchronously switch the working state of the three-way valve 106 to achieve switching between wastewater filtration and backwashing of the filter screen 302.

[0034] Specifically, Figure 1 The switching assembly includes a driving motor 500, a driving shaft 501, and a bevel gear 1 502. The driving motor 500 is fixed to the outer wall of the processing chamber 100. The driving shaft 501 is connected to the output end of the driving motor 500. The bevel gear 1 502 is mounted on the driving shaft 501. The mounting shaft 300 extends out of the processing chamber 100 and is equipped with a bevel gear 2 303, which is vertically meshed with the bevel gear 1 502.

[0035] The valve stem of the three-way valve 106 is connected to the driving shaft 501 by transmission, and in this embodiment, a transmission wheel set and a transmission belt are used. Specifically, the driving shaft 501 and the valve stem of the three-way valve 106 are respectively equipped with a transmission wheel set 1, and the transmission wheel set 1 is connected by a transmission belt 1. Of course, in order to ensure the reliability of the transmission, the transmission wheel set 1 and the transmission belt 1 can be selected in the form of a sprocket or a chain.

[0036] In this way, when the driving motor 500 drives the driving shaft 501 to rotate with the bevel gear 1 503, the bevel gear 1 503 drives the bevel gear 2 303 to deflect the movable partition 301 through the mounting shaft 300. Figure 2 , Figure 4 For example, the former to the latter means that the movable partition 301 deflects clockwise, and the side of the filter screen 1 302 close to the end A of the movable partition deflects from upward to downward. Synchronously, the driving shaft 501 also drives the valve stem of the three-way valve 106 to rotate through the transmission wheel set 1 and the transmission belt 1, thereby realizing the switching of the connection state of the three-way valve 106.

[0037] The semi-cylindrical cavity 1 moves with the rotation of the movable partition 301. Figure 2, which is the daily work station (i.e., the waste water is filtered and then discharged). This station corresponds to the inlet end of the three-way valve 106 being connected to the outlet end 1, that is, the waste liquid inlet pipe 101 is connected to the branch pipe 102, and the waste liquid flows from the branch pipe 102 into the processing bin 100, flows through the filter screen 302 and is filtered. Specifically, at this time, the semi-cylindrical cavity 1 connects the branch pipe 102 and the liquid outlet pipe 103, and the slag discharge pipe 104 is connected to the semi-cylindrical cavity 2. The branch pipe 102 is located between the filter screen 1 302 and the A end of the movable partition 301, so that the waste liquid flows from the filter screen 1 302 facing the A end of the movable partition to the filter screen 1 302 facing the A end of the movable partition, that is, it is filtered through the filter screen 1 302 and discharged from the liquid outlet pipe 103 for recovery.

[0038] After a period of time in the daily work station, the filter screen 1 302 will be blocked, which is manifested as a decrease in the flow rate of the liquid outlet pipe 103. Therefore, a flow meter 600 can be installed on the liquid outlet pipe 103 to monitor the liquid outlet flow rate. When the liquid outlet flow rate is too small, it means that the filter screen 1 302 is blocked and backwashing is required.

[0039] The top of the booster cylinder 201 is connected to the branch pipe 2 105. The top of the booster cylinder 201 is also connected to the other side of the top of the processing chamber 100 through the liquid guide pipe 202, which is used to backwash the filter screen 1 302.

[0040] The booster assembly is disposed in the booster cylinder 201 and is used to boost the pressure of the backwash pipe when the waste liquid inlet pipe 101 is connected to the branch pipe 2 105. Figure 3 ,for Figure 2 The booster assembly includes a sealing plate 402 , a piston plate 400 , a pull rope 404 , and a support rod 405 .

[0041] The sealing plate 402 is used to actively seal the backwash pipe. Specifically, a magnetic ring 403 is provided at the inner top of the booster cylinder 201 corresponding to the inlet of the backwash pipe, which is used to magnetically adsorb the sealing plate 402. The inner wall of the booster cylinder 201 is provided with a longitudinal slide rail 407, which is located above the piston plate 400 and has a limit block 408 at its bottom. A slider 406 is provided on the slide rail 407, and the slider 406 is connected to the sealing plate 402, so that the sealing plate 402 moves along the slide rail 409.

[0042] The piston plate 400 is connected to the inner bottom of the booster cylinder 201 through the compression spring 401, and is used to move up and down in the booster cylinder 201 under the action of the hydraulic pressure and the compression spring 401. One end of the pull rope 404 is connected to the sealing plate 402, and the other end is connected to the piston plate 400, and is used to pull the sealing plate 402 away from the magnetic ring 403 when the liquid above the piston plate 400 increases to a critical value. The support rod 405 is used to lift the sealing plate 402 when the tension spring is reset, and make the sealing plate 402 adsorbed by the magnetic ring 403.

[0043] See also Figure 4 , that is, it is in the backwash stage one position (i.e., it has just switched to the waste liquid inlet pipe 101 and the branch pipe 106 being connected). This position corresponds to the connection between the inlet end and the outlet end 2 of the three-way valve 106, that is, the waste liquid inlet pipe 101 is connected to the branch pipe 105, and the waste liquid flows from the branch pipe 105 into the booster cylinder 201. The branch pipe 105 is equipped with a filter screen 203, which can filter the waste liquid as it flows through. At this time, the semi-cylindrical cavity 1 connects the liquid guide tube 202 and the slag discharge pipe 104, and the liquid outlet pipe 103 is connected to the semi-cylindrical cavity 2. It should be noted that, refer to Figure 5 The sealing plate 402 is still attracted by the magnetic ring 403, so that the inlet of the liquid guiding tube 202 is closed, thus forming a piston mechanism with a single liquid inlet.

[0044] Furthermore, the liquid guide tube 202 is located above the filter screen 1 302. Since the side of the filter screen 1 302 close to the end of the movable partition A faces downward, the impurities accumulated on the filter screen 1 302 will fall down due to the gravity.

[0045] See also Figure 5 , in the backwashing stage 2. In this position, the branch pipe 105 continuously fills the waste liquid above the piston plate 400, and the piston plate 400 moves downward under the hydraulic pressure, the support rod 405 moves away from the sealing plate 403, the compression spring 401 is deformed, and the pull rope 404 is gradually tightened. Figure 6 As shown, this is the critical state of the booster assembly, at which time the pull rope 404 has been tensioned and the sealing plate 406 is subjected to the pulling force of the pull rope 401.

[0046] See also Figure 7 , in the backwashing stage three position. In this position, the pull rope 404 pulls the sealing plate 402 apart, that is, separates it from the magnetic ring 403. It should be noted that the magnetic ring 403 can be made of permanent magnets, and the sealing plate 402 is made of a material that can be magnetically adsorbed, such as iron or iron alloy, so that the density of the sealing plate 402 is greater than the density of the waste liquid. Figure 8 After the sealing plate 402 is separated from the magnetic ring 403, it moves along the slide rail 407 with the slider 406 until it is stuck by the stop block 408, and the inlet of the liquid guide tube 202 is opened. For the booster cylinder 201, at this time, the top end is still taking in liquid, and the piston plate 400 moves upward due to the deformation recovery of the compression spring 401. The only outlet is the liquid guide tube 202, which is equivalent to boosting the pressure of the liquid guide tube 202 and increasing the flow rate of the liquid guide tube 202.

[0047] The waste liquid flow sprayed from the liquid guide pipe 202 flows in the reverse direction from the filter screen 106 (i.e., flows from the end side of the filter screen 302 facing away from the movable partition A to the end side of the filter screen 302 facing the movable partition A). Because some impurities on the filter screen 106 have fallen off naturally before, and the filter screen 106 is backwashed by the waste liquid flow, the impurities on the filter screen 106 can be taken away and directly discharged from the slag discharge pipe 104, which is quick and convenient.

[0048] It should be noted that, in this working position, there is a certain distance between the sealing plate 401 and the magnetic ring 407, which can prevent the sealing plate 401 from being re-adsorbed by the magnetic ring 407 too early when water flows out of the backwash pipe 401.

[0049] After a round of backwashing, the inlet and outlet of the three-way valve 106 are switched back to the original position. Figure 2 station, so as to filter and recycle the wastewater.

[0050] It should be noted that the piston plate 400 will move upward when the compression spring 401 is deformed and restored, so that the support rod 405 contacts the sealing plate 402 and lifts the sealing plate 402, so that the sealing plate 402 is close to the magnetic ring 403 and is adsorbed by the magnetic ring 403 again to achieve resetting.

[0051] In addition, a slag cleaning port with a cover is provided on the branch pipe 105, and the slag cleaning port is correspondingly arranged on the side of the filter screen 203 facing the three-way valve 106, and the cover can be opened to clean the filter screen 203 when the branch pipe 105 is not connected. It should be noted that compared with the wastewater filtration of the filter screen 1 302, the backwashing time is shorter, so the filter screen 203 accumulates for a longer time to be cleaned, and it does not need to be cleaned frequently, and for the maintenance personnel, this part of the workload is less.

[0052] Of course, in order to further reduce the workload of maintenance personnel, a remote electric control method can be adopted, for example, a controller is set. The controller is used to control the rotation of the drive motor 500 according to the monitoring data of the flow meter 600, switch the position of the movable partition 301 and the three-way valve 106, and realize the switching of wastewater filtration and backwashing of the filter screen 102. Specifically, if the flow meter 600 is installed in the liquid outlet pipe 103, the controller controls the rotation of the drive motor 500 according to the monitoring data of the flow meter 600: if the flow meter 600 detects that the outlet flow rate is lower than the set flow threshold, the drive motor 500 is controlled to rotate, and the position of the movable partition 301 and the three-way valve 106 is switched to switch from wastewater filtration to backwashing of the filter screen 106. After a delay of a period of Δt (i.e., a pressurized backwashing is completed), the controller controls the drive motor 500 to reverse, and switches from backwashing of the filter screen 106 to waste liquid filtration.

[0053] In another embodiment, a switch valve 107 is installed on the slag discharge pipe 104, and the valve stem of the switch valve 107 is also connected to the driving shaft 501. Similar to the three-way valve 107, the driving shaft 501 and the valve stem of the switch valve 107 are respectively equipped with a transmission wheel set 2, and the transmission wheel set 2 is connected to each other through a transmission belt 2. Similarly, in order to ensure the reliability of the transmission, the transmission wheel set 2 and the transmission belt 2 can be selected in the form of a sprocket or a chain.

[0054] In this way, when the driving shaft 501 rotates, the valve stem of the switch valve 107 is also driven to rotate through the second transmission wheel group and the second transmission belt, thereby switching the opening and closing of the switch valve 107. Specifically, in the daily working station, the switch valve 107 is closed to prevent foreign matter from entering the processing bin 100 from the slag discharge pipe 104. When switching to the backwashing station for the filter screen 106, the switch valve 107 is opened to ensure the smooth discharge of impurities.

[0055] The switch valve 107 can be an existing ball valve, which is rotated 90° to connect the inlet and outlet of the ball to the pipe port, thus opening; and reversed 90° to make the ball face the pipe port, thus cutting off the flow and closing. Of course, other types of valves can also be used, but they should be able to open and close when the valve stem is rotated forward and reversed.

[0056] Of course, in this embodiment, the remote electric control method can also be adopted as in the above embodiment, for example, a controller is set. The controller is used to control the rotation of the drive motor 500 according to the monitoring data of the flow meter 600, switch the working position of the movable partition 301, the three-way valve 106, and the switch valve 107, and realize the switching of the wastewater filtration and the backwashing of the filter screen 1 302. Specifically, if the flow meter 600 is installed in the liquid outlet pipe 103, the controller controls the rotation of the drive motor 500 according to the monitoring data of the flow meter 600: if the flow meter 600 detects that the outlet flow is lower than the set flow threshold, the drive motor 500 is controlled to rotate, and the working position of the movable partition 301, the three-way valve 106, and the switch valve 107 are switched to realize the switching from the wastewater filtration to the backwashing of the filter screen 106. After a delay of a period of Δt (i.e., a pressurized backwashing is completed), the controller controls the drive motor 500 to reverse, and switches from the backwashing of the filter screen 106 to the waste liquid filtration.

[0057] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0058] The above-mentioned embodiments only express several implementation methods of the present invention, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the invention patent. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be subject to the attached claims.

Claims

1. A pressurized permanent magnet waste liquid recovery and treatment filter screen cleaning machine, characterized in that: include: A waste liquid inlet pipe, which is used to introduce waste liquid from permanent magnet processing; The three-way valve has an inlet end connected to the waste liquid inlet pipe, an outlet end 1 connected to a branch pipe 1, and an outlet end 2 connected to a branch pipe 2; a filter screen 2 is arranged in the branch pipe 2; The processing chamber is a hollow cylindrical cavity arranged horizontally; one side of the top of the processing chamber is connected to the branch pipe 1; a movable partition is arranged in the processing chamber, and a filter screen 1 is arranged on one side of the movable partition for filtering the waste liquid; one side of the bottom of the processing chamber is connected to a liquid outlet pipe for recovering the filtered waste liquid; the other side of the bottom of the processing chamber is connected to a slag discharge pipe for discharging impurities after backwashing; A switching component is connected to the movable partition and the three-way valve in a transmission manner, and is used to drive the movable partition to rotate and synchronously switch the working state of the three-way valve to achieve the switching of wastewater filtration and backwashing of the filter screen; A booster cylinder, the top of which is connected to branch pipe 2; the top of the booster cylinder is also connected to the other side of the top of the processing bin through a liquid guide tube, for backwashing filter screen 1; as well as A booster assembly is arranged in the booster cylinder and is used to boost the backwash pipe when the waste liquid inlet pipe is connected to the second branch pipe; wherein the booster assembly includes: A sealing plate is used to flexibly seal the backwash pipe; a magnetic ring is provided on the inner top of the booster cylinder corresponding to the inlet of the backwash pipe, which is used to magnetically adsorb the sealing plate; a longitudinal slide rail is provided on the inner wall of the booster cylinder, the slide rail is located above the piston plate, and a limit block is provided at the bottom end thereof; a slider is provided on the slide rail, and the slider is connected to the sealing plate; The piston plate is connected to the inner bottom of the booster cylinder through a compression spring and is used to move up and down in the booster cylinder under the action of the hydraulic pressure and the compression spring; A pull rope, one end of which is connected to the sealing plate and the other end of which is connected to the piston plate, and is used to pull the sealing plate away from the magnetic ring when the liquid above the piston plate increases to a critical value; and The support rod is used to lift the sealing plate when the tension spring is reset and make the sealing plate be attracted by the magnetic ring.

2. The pressurized permanent magnet waste liquid recovery and treatment filter cleaning machine according to claim 1 is characterized in that: The movable partition is rotatably connected in the processing chamber via a mounting shaft, and divides the processing chamber into a semi-cylindrical cavity 1 and a semi-cylindrical cavity 2; The semi-cylindrical cavity 1 moves as the movable partition rotates; when the semi-cylindrical cavity 1 connects the branch pipe 1 and the liquid outlet pipe, the slag discharge pipe is connected to the semi-cylindrical cavity 2; when the semi-cylindrical cavity 1 connects the liquid guide pipe and the slag discharge pipe, the liquid outlet pipe is connected to the semi-cylindrical cavity 2.

3. The pressurized permanent magnet waste liquid recovery and treatment filter cleaning machine according to claim 2, characterized in that: The switching component comprises: A driving motor, which is fixed to the outer wall of the processing chamber; A driving shaft connected to the output end of the driving motor; and Bevel gear one is arranged on the driving shaft; the installation shaft extends out of the processing bin and is provided with bevel gear two, and bevel gear two is vertically meshed with bevel gear one.

4. The pressurized permanent magnet waste liquid recovery and treatment filter cleaning machine according to claim 3, characterized in that: The valve stem of the three-way valve is transmission-connected to the driving shaft; the driving shaft and the valve stem of the three-way valve are correspondingly provided with a transmission wheel set 1, and the transmission wheel set 1 is transmission-connected through a transmission belt 1.

5. The pressurized permanent magnet waste liquid recovery and treatment filter cleaning machine according to claim 4, characterized in that: When the semi-cylindrical cavity 1 connects the branch pipe 1 and the liquid outlet pipe, the three-way valve connects the waste liquid inlet pipe with the branch pipe 1, and the waste liquid flows out from the branch pipe 1, flows through the filter screen 1 and is filtered; When the semi-cylindrical cavity 1 connects the liquid guide pipe and the slag discharge pipe, the three-way valve connects the waste liquid inlet pipe with the branch pipe 2, and the waste liquid flows out from the liquid guide pipe, flows through the filter screen 1 in the reverse direction, and backwashes the filter screen 1.

6. The pressurized permanent magnet waste liquid recovery and treatment filter cleaning machine according to claim 1, characterized in that: The branch pipe 2 is provided with a slag cleaning port with a cover, and the slag cleaning port is correspondingly arranged on the side of the filter screen 2 facing the three-way valve.

7. The pressurized permanent magnet waste liquid recovery and treatment filter screen cleaning machine according to claim 3, characterized in that: The liquid outlet pipe is provided with a flow meter for monitoring the liquid outlet flow rate to reflect the blockage of the filter screen.

8. The pressurized permanent magnet waste liquid recovery and treatment filter screen cleaning machine according to claim 7, characterized in that: The pressurized permanent magnet waste liquid recovery and treatment filter cleaning machine also includes a controller, which is used to control the rotation of the drive motor according to the monitoring data of the flow meter, switch the working position of the movable partition and the three-way valve, and realize the switching of wastewater filtering and filter backwashing.

9. The pressurized permanent magnet waste liquid recovery and treatment filter screen cleaning machine according to claim 7, characterized in that: The slag discharge pipe is provided with a switch valve, and the valve stem of the switch valve is also drivingly connected to the driving shaft; The driving shaft and the valve stem of the switch valve are correspondingly provided with a second transmission wheel set, and the second transmission wheel set is connected through a second transmission belt.

10. A pressurized filter cleaning machine for recycling and treating waste liquid of permanent magnets according to claim 9, characterized in that: The pressurized permanent magnet waste liquid recovery and treatment filter cleaning machine also includes a controller, which is used to control the rotation of the drive motor according to the monitoring data of the flow meter, switch the working positions of the movable partition, the three-way valve, and the switch valve, and realize the switching of wastewater filtration and filter backwashing.

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