Liquid impurity magnetic attraction type filtering device and filtering method using the same

Abstract

The application relates to a liquid impurity magnetic suction type filtering device and a filtering method using the same, and relates to the field of fluid pipeline iron removers. In order to solve the problem of low installation and dismounting efficiency of the existing iron removers, the application comprises a tee pipeline, a cover plate is arranged at the pipe opening of the tee pipeline, a plurality of sleeves are arranged through the cover plate, the end of the sleeve away from the cover plate is closed, a magnetic rod is arranged in each sleeve, and the end of the magnetic rod away from the cover plate extends to the intersection of the tee pipeline; an installation assembly is arranged on the magnetic rod and used for mounting the magnetic rod on the cover plate; the installation assembly is detachably connected with the cover plate; and a sealing assembly is arranged on the cover plate and used for sealing the cover plate and the tee pipeline. The application has the effect of improving the installation, dismounting and cleaning efficiency of the magnetic suction type filtering device.

Description

Technical Field

[0001] This application relates to the field of iron removal devices for fluid pipelines, and in particular to a magnetic filtration device for liquid impurities and a filtration method using the device. Background Technology

[0002] In industrial production, magnetic rods are used to adsorb metal particles from liquids, thus separating them from the liquid. However, metal particles adsorbed directly on the surface of the magnetic rod are difficult to clean. Usually, a sleeve is fitted over the magnetic rod, allowing the metal particles to adhere to the outside of the sleeve. During cleaning, the sleeve and magnetic rod are first removed from the liquid, and then the magnetic rod is separated from the sleeve to facilitate cleaning of the metal particles.

[0003] However, the existing iron separators require each set of sleeves and magnetic rods to be installed separately, which results in low installation and disassembly efficiency and thus low cleaning efficiency, so improvements are needed. Summary of the Invention

[0004] To improve the efficiency of installation, disassembly and cleaning of magnetic filter devices, this application provides a magnetic filter device for liquid impurities.

[0005] Firstly, the liquid impurity magnetic filtration device provided in this application adopts the following technical solution: A magnetic filtration device for liquid impurities includes a three-way pipe with a cover plate installed at the pipe opening. Several sleeves are installed through the cover plate, with the ends of the sleeves away from the cover plate closed. A magnetic rod is inserted into each sleeve, with the end of the magnetic rod away from the cover plate extending to the junction of the three-way pipe. An installation assembly is mounted on the magnetic rod for mounting it to the cover plate; the installation assembly is detachably connected to the cover plate. A sealing assembly is installed on the cover plate for sealing the cover plate and the three-way pipe.

[0006] By adopting the above technical solution, the operator welds the sleeve and cover plate together, and installs the sealing component on the cover plate. The operator controls the cover plate so that the end of the sleeve furthest from the cover plate enters the pipe; until the bottom wall of the cover plate abuts against the end wall at the pipe opening, the end of the sleeve furthest from the cover plate is inserted at the junction of the tee pipe, connecting the sealing component to the tee pipe, and the cover plate installation is complete. The installation component is then installed on one end of the magnetic rod, and the end of the magnetic rod furthest from the installation component passes through the through hole of the cover plate and is inserted into the sleeve, connecting the installation component to the cover plate, and the magnetic rod installation is complete. Metal particles in the liquid inside the tee pipe are attracted to the outer peripheral wall of the sleeve by the magnetic rod. When cleaning is required, the operator disconnects the sealing component from the tee pipe, controls the cover plate to move the sleeve and magnetic rod away from the tee pipe, and the metal particles remain attracted to the sleeve. The connection between the installation component and the cover plate is then released, the magnetic rod is removed, and the metal particles detach from the sleeve under the action of gravity. The cover plate improves the efficiency of installing and removing the sleeve and tee pipe, thereby improving the cleaning efficiency of the device.

[0007] Optionally, the mounting assembly includes several end caps, which are mounted on the end of the magnetic rod near the cover plate and are interference-fitted into the sleeve; a pull ring is mounted on the end wall of the end cap away from the magnetic rod.

[0008] Optionally, the sealing assembly includes a rubber gasket and several clamps. The rubber gasket is sandwiched between the cover plate and the end wall of the tee pipe opening. One end of the clamp is rotatably connected to the end wall of the cover plate away from the tee pipe, and the other end can be engaged and fixed to the outer peripheral wall of the tee pipe opening.

[0009] By employing the above technical solution, the operator first attaches the rubber gasket to the end wall of the tee pipe opening, then controls the cover plate to drive the sleeve into the tee pipe until the cover plate contacts the rubber gasket. Rotating the clamp engages with the end cap, pressing the rubber gasket firmly onto the tee pipe. The rubber gasket undergoes elastic deformation, forming a sealed space between the tee pipe, rubber gasket, cover plate, and sleeve. This allows for quick installation and removal of the cover plate, reducing the possibility of liquid leakage at the connection between the cover plate and the tee pipe. The operator then attaches the end cap to one end of the magnetic rod, holds the pull ring, and inserts the magnetic rod into the sleeve until the end cap is inside. This allows for quick installation and removal of the magnetic rod; the end cap and sleeve have an interference fit, making it difficult for the magnetic rod to detach. The above steps are repeated to install all magnetic rods sequentially. When it is necessary to remove the magnetic rod, the operator holds the pull ring to lift the end cap and magnetic rod together and completely detach them from the sleeve. The above steps are repeated to remove all magnetic rods sequentially.

[0010] Optionally, the mounting assembly includes a tooling plate and a plurality of first protrusions. The tooling plate covers the end wall of the cover plate away from the tee pipe. The end of the magnetic rod near the cover plate is detachably connected to the tooling plate. The plurality of first protrusions are mounted on the tooling plate and arranged in a circumferential array along the tooling plate. The cover plate is equipped with a plurality of second protrusions, and the first protrusions can engage with the second protrusions.

[0011] Optionally, a plurality of the sleeves are arranged in a circumferential array along the cover plate. A short rod is installed on the end wall of the magnetic rod near the cover plate, and a handle is installed on the end of the short rod away from the magnetic rod. The diameter of the handle is equal to the diameter of the magnetic rod and larger than the diameter of the short rod. A circular hole is formed on the tooling plate, and the diameter of the circular hole is larger than the diameter of the magnetic rod. A through groove is formed on one side of the circular hole on the tooling plate. The through groove penetrates both end walls in the thickness direction of the tooling plate and communicates with the circular hole. The short rod can be inserted into the through groove, and the diameter of the handle is larger than the width of the through groove.

[0012] By employing the above technical solution, the operator controls the tooling plate to approach the cover plate, aligning the first protrusion with the gap between two adjacent second protrusions until the tooling plate and cover plate are in contact, at which point the through slot and through hole are connected. The tooling plate is rotated clockwise until the first and second protrusions engage, and the tooling plate and cover plate engage; at this point, the round hole and through hole are connected. The operator holds the handle, allowing the magnetic rod to pass through the round hole, through the cover plate, and into the sleeve. The operator releases the handle, and the magnetic rod remains in the sleeve under gravity, completing the installation. When a single magnetic rod needs to be replaced, the operator simply holds the handle and pulls it out for replacement. When cleaning the sleeve, the tooling plate is rotated counterclockwise until the first protrusion disengages from the second protrusion, and the short rod moves from the round hole into the through slot, with the bottom wall of the handle near the short rod contacting the top wall of the tooling plate near the through slot; the operator then controls the tooling plate to rise, simultaneously raising all the magnetic rods and detaching them from the sleeve. It enables the detachment and connection of magnetic rods and sleeves, allowing for the simultaneous removal of all magnetic rods, thus improving the efficiency of magnetic rod removal and installation, and enhancing the efficiency of device cleaning.

[0013] Optionally, the sealing assembly includes a sealing ring and a plurality of third protrusions, the plurality of third protrusions being mounted on the peripheral wall of the cover plate and arranged in a circumferential array along the opening of the tee pipe; a groove is provided on the peripheral wall of the tee pipe at the opening, and the third protrusions can be inserted into the groove; the sealing ring is sandwiched between the cover plate and the end wall of the tee pipe at the opening.

[0014] By adopting the above technical solution, the operator attaches the sealing ring to the end wall of the tee pipe, aligns the third protrusion with the top of the slot, and controls the cover plate to approach the tee pipe until the third protrusion is inserted into the slot from above. While lowering the cover plate, it rotates counterclockwise, causing the third protrusion to slide towards the bottom of the slot until it reaches the very bottom, at which point the cover plate presses the sealing ring firmly against the tee pipe. The cover plate and tee pipe can be disassembled and connected with a single rotation, improving the efficiency of cover plate installation and disassembly, and enhancing the efficiency of device cleaning.

[0015] Optionally, the liquid impurity magnetic filtration device further includes a drive assembly, which includes a lifting member, a rotating rod, and a collar; a working frame is provided outside the three-way pipe, the fixed end of the lifting member is mounted on the working frame, and the movable end of the lifting member is rotatably connected to the rotating rod; the end of the rotating rod away from the lifting member is connected to a tooling plate; the collar is mounted on the working frame, and the rotating rod is inserted into the collar; a first rotating groove and a second rotating groove are formed on the inner wall of the collar, the first rotating groove and the second rotating groove are arranged circumferentially and upward, and the rotation directions are opposite; a first rotating block and a second rotating block are installed on the outer peripheral wall of the rotating rod, the first rotating block can be inserted into the first rotating groove and slide along the inner wall of the first rotating groove; the second rotating block can be inserted into the second rotating groove and slide along the inner wall of the second rotating groove.

[0016] By adopting the above technical solution, when the sleeve needs to be cleaned, the operator installs the rotating rod on the tooling plate, starts the lifting mechanism, and the first rotating block moves upward along the inner wall of the first rotating groove. The rotating rod drives the tooling plate to rise and rotate clockwise. The second protrusion abuts against the second protrusion and drives the cover plate to rise and rotate clockwise. The third protrusion rises in the slot and rotates clockwise. This continues until the first rotating block leaves the first rotating groove, the third protrusion leaves the slot at the same time, and the cover plate detaches from the end cap. The lifting mechanism drives the rotating rod to continue rising, driving the tooling plate and cover plate to rise vertically until the sleeve, with metal particles adsorbed, leaves the vertical pipe. The second rotating block moves upward along the inner wall of the second rotating groove; the rotating rod drives the tooling plate to rise and rotate counterclockwise, and the cover plate is fixed by the operator; the first protrusion detaches from the second protrusion, and the short rod is inserted into the through groove; the lifting mechanism drives the rotating rod to rise vertically, driving the tooling plate and all magnetic rods to rise vertically together until the magnetic rods are completely detached from the sleeve. The drive assembly is designed to enable quick disassembly and installation of the device using only one drive component, further improving the efficiency of disassembly and installation of the magnetic filter device; and it also solves the problem that the cover plate, sleeve and multiple magnetic rods are too heavy to be lifted manually.

[0017] Optionally, a cap is provided at the end of the magnetic rod away from the cover plate, and the sidewall of the cap is inclined to guide the magnetic rod into the sleeve.

[0018] By adopting the above technical solution, the operator attaches the gasket to one end of the magnetic rod and installs the mounting assembly on the other end. The operator controls the magnetic rod to align the gasket with the sleeve, and the inclined sidewall of the gasket guides the gasket to move the magnetic rod into the sleeve. This reduces the possibility of collision between the magnetic rod and the sleeve during installation; during use, the gasket can also absorb some of the vibration caused by water flow impacting the sleeve, reducing the possibility of damage to the magnetic rod due to vibration.

[0019] Secondly, this application also discloses a filtration method using the magnetic filtration device for liquid impurities, comprising the following steps: Cover plate assembly: Install several of the sleeves on the cover plate according to the design position, connect one end of the sealing component to the tee pipe and the other end to the cover plate, so that the cover plate is installed on the tee pipe; Magnetic rod installation: Insert the magnetic rod into the sleeve and connect the magnetic rod to the cover plate through the installation assembly; Liquid filtration: The liquid to be filtered is input from the first horizontal pipe of the three-way pipe, passes through the junction of the three-way pipe, and is output from the second horizontal pipe. The metal particles in the liquid are attracted to the outer wall of the sleeve by the magnetic rod. Impurity removal: Disconnect the cover plate from the sealing assembly, and after the cover plate drives the magnetic rod to detach from the tee pipe, disconnect the mounting assembly from the cover plate, pull the magnetic rod out of the sleeve, collect the metal particles that fall off on their own, and clean the metal particles attached to the outer peripheral wall of the sleeve.

[0020] By adopting the above technical solution, the cover plate is disassembled and installed on the tee pipe through the sealing component, and the magnetic rod is disassembled and connected to the cover plate through the installation component, so as to realize the quick installation of the magnetic rod and the sleeve, which facilitates the installation, disassembly and cleaning of the magnetic filter device.

[0021] Optionally, the sleeve and cover plate are welded together using brazing during the cover plate assembly step.

[0022] By adopting the above technical solution, the sleeve is welded to the cover plate by brazing. The joint surface of the sleeve and the cover plate is smooth and has high sealing performance, reducing the possibility of liquid leakage from the joint of the sleeve and the cover plate.

[0023] In summary, this application includes at least one of the following beneficial technical effects: 1. The operator welds the sleeve and cover plate together, and installs the sealing assembly on the cover plate. The operator controls the cover plate so that the end of the sleeve furthest from the cover plate enters the pipe; until the bottom wall of the cover plate abuts against the end wall at the pipe opening, the end of the sleeve furthest from the cover plate is inserted into the junction of the tee pipe, and the sealing assembly is connected to the tee pipe. The cover plate installation is complete. The installation component is installed on one end of the magnetic rod, and the end of the magnetic rod furthest from the installation component passes through the through hole of the cover plate and is inserted into the sleeve. The installation component is connected to the cover plate, and the magnetic rod installation is complete. Metal particles in the liquid inside the tee pipe are attracted to the outer peripheral wall of the sleeve by the magnetic rod. When cleaning is required, the operator disconnects the sealing assembly from the tee pipe, controls the cover plate to move the sleeve and magnetic rod away from the tee pipe, and the metal particles are still attracted to the sleeve. The connection between the installation component and the cover plate is released, the magnetic rod is removed, and the metal particles are detached from the sleeve under the action of gravity. The cover plate improves the efficiency of installation and disassembly of the sleeve and tee pipe, thereby improving the efficiency of the device cleaning. 2. The operator moves the tooling plate close to the cover plate, aligning the first protrusion with the gap between two adjacent second protrusions until the tooling plate is in contact with the cover plate, at which point the through slot and through hole are connected. Rotate the tooling plate clockwise until the first and second protrusions engage, and the tooling plate engages with the cover plate; at this point, the round hole and through hole are connected. The operator holds the handle, allowing the magnetic rod to pass through the round hole, through the cover plate, and into the sleeve. The operator releases the handle, and the magnetic rod remains in the sleeve under gravity, completing the installation. When a single magnetic rod needs to be replaced, simply hold the handle and pull out the magnetic rod for replacement. When cleaning the sleeve, rotate the tooling plate counterclockwise until the first protrusion disengages from the second protrusion, and the short rod moves from the round hole into the through slot, with the bottom wall of the handle near the short rod in contact with the top wall of the tooling plate near the through slot; the operator raises the tooling plate, causing all magnetic rods to rise simultaneously and disengage from the sleeve. It enables the detachment and connection of magnetic rods and sleeves, allowing for the simultaneous removal of all magnetic rods, thus improving the efficiency of magnetic rod removal and installation, and enhancing the efficiency of device cleaning. 3. When cleaning the sleeve is required, the operator installs the rotating rod on the tooling plate, activates the lifting mechanism, and the first rotating block moves upward along the inner wall of the first rotating groove. The rotating rod drives the tooling plate to rise and rotate clockwise. The second protrusion abuts against the second protrusion and drives the cover plate to rise and rotate clockwise. The third protrusion rises in the slot and rotates clockwise. This continues until the first rotating block leaves the first rotating groove, the third protrusion simultaneously leaves the slot, and the cover plate detaches from the end cap. The lifting mechanism drives the rotating rod to continue rising, driving the tooling plate and cover plate to rise vertically until the sleeve, with metal particles adsorbed, leaves the vertical pipe. The second rotating block moves upward along the inner wall of the second rotating groove; the rotating rod drives the tooling plate to rise and rotate counterclockwise, and the cover plate is fixed by the operator; the first protrusion detaches from the second protrusion, and the short rod is inserted into the through groove; the lifting mechanism drives the rotating rod to rise vertically, driving the tooling plate and all magnetic rods to rise vertically together until the magnetic rods are completely detached from the sleeve. The drive assembly is designed to enable quick disassembly and installation of the device using only one drive component, further improving the efficiency of disassembly and installation of the magnetic filter device; and it also solves the problem that the cover plate, sleeve and multiple magnetic rods are too heavy to be lifted manually. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the structure of the liquid impurity magnetic filtration device in Embodiment 1 of this application.

[0025] Figure 2 This is a cross-sectional view of the mounting assembly and sealing assembly of Embodiment 1 of this application.

[0026] Figure 3 This is a schematic diagram of the structure of the liquid impurity magnetic filtration device in Embodiment 2 of this application.

[0027] Figure 4 This is a cross-sectional view of the mounting assembly and sealing assembly of Embodiment 2 of this application.

[0028] Figure 5 yes Figure 3 A magnified view of A in the middle.

[0029] Explanation of reference numerals in the attached drawings: 1. T-junction pipe; 11. Vertical pipe; 12. End cap; 121. Slot; 13. First horizontal pipe; 14. Second horizontal pipe; 2. Cover plate; 21. Through hole; 22. Sleeve; 23. Handle; 3. Magnetic rod; 31. Gasket; 4. Mounting assembly; 41. End cap; 411. Pull ring; 42. Tooling plate; 421. Round hole; 422. Through groove; 43. First protrusion; 44. Second protrusion; 441. Groove; 45. Short rod; 46. Handle; 5. Sealing assembly; 51. Rubber gasket; 52. Clamp; 53. Sealing ring; 54. Third protrusion; 6. Drive assembly; 61. Lifting component; 62. Rotating rod; 621. First rotating block; 622. Second rotating block; 63. Collar; 631. First rotating groove; 632. Second rotating groove; 7. Work frame. Detailed Implementation

[0030] The following is in conjunction with the appendix Figure 1-5 This application will be described in further detail.

[0031] This application discloses a magnetic filtration device for liquid impurities.

[0032] Example 1 Reference Figure 1 and Figure 2 The magnetic filtration device includes a three-way pipe 1, which is placed on the ground. The three-way pipe 1 includes a first horizontal pipe 13, a second horizontal pipe 14, and a vertical pipe 11. Liquid flows in through the first horizontal pipe 13 and out through the second horizontal pipe 14. The filtration device is installed inside the vertical pipe 11. A cover plate 2 is installed at the opening of the vertical pipe 11, and a sealing component 5 is installed on the cover plate 2. The sealing component 5 is detachably connected to the outer peripheral wall of the vertical pipe 11 at the opening. A handle 23 is also installed on the cover plate 2.

[0033] The cover plate 2 has several through holes 21, which penetrate both end walls in the thickness direction of the cover plate 2 and are evenly distributed in an array around the circumference of the cover plate 2. Several sleeves 22 are installed through the cover plate 2. The outer peripheral wall of the opening at one end of the sleeve 22 is attached to the inner wall of the through hole 21 and fixed by welding. The end of the sleeve 22 away from the cover plate 2 is sealed by welding with a metal plate. The sleeves 22 are non-magnetic stainless steel sleeves 22. A magnetic rod 3 is inserted into each sleeve 22. An installation component 4 is installed at the end of the magnetic rod 3 near the cover plate 2. The installation component 4 is detachably connected to the cover plate 2. The end of the magnetic rod 3 away from the cover plate 2 extends to the junction of the tee pipe 1 to adsorb metal particles in the liquid through the sleeve 22.

[0034] When a filter needs to be installed, the operator should follow the instructions on cover 2 as follows: Figure 1 A through hole 21 is made at the design location shown. The outer peripheral wall of the opening of the sleeve 22 is welded to the inner wall of the through hole 21. The sealing component 5 is then installed on the cover plate 2. The operator holds the handle 23 and aligns the cover plate 2 and the sleeve 22 with the opening of the vertical pipe 11, allowing the end of the sleeve 22 away from the cover plate 2 to enter the vertical pipe 11 through the opening; until the bottom wall of the cover plate 2 abuts against the end wall of the opening of the vertical pipe 11, and the end of the sleeve 22 away from the cover plate 2 is inserted at the junction of the tee pipe 1, connecting the sealing component 5 to the vertical pipe 11. The cover plate 2 is now installed. The mounting component 4 is installed on one end of the magnetic rod 3, allowing the end of the magnetic rod 3 away from the mounting component 4 to pass through the through hole 21 through the cover plate 2 into the sleeve 22, until the magnetic rod 3 is inserted into the sleeve 22. The mounting component 4 is then connected to the cover plate 2, completing the installation of the magnetic rod 3.

[0035] The operator controls the liquid to flow in from the first horizontal pipe 13. When the liquid reaches the junction of the tee pipe 1, it evenly contacts the outer peripheral walls of the fifteen sleeves 22. Metal particles in the liquid are attracted to the outer peripheral walls of the sleeves 22 by the magnetic rods 3. The magnetically filtered liquid flows out from the second horizontal pipe 14. After a period of operation, a large number of metal particles are attracted to the outer side of the sleeves 22, requiring cleaning. The operator closes the valves of the first horizontal pipe 13 and the second horizontal pipe 14, disconnects the sealing assembly 5 from the vertical pipe 11, and removes the cover plate 2 by holding the handle 23. At this time, since the magnetic rods 3 are still inserted in the sleeves 22, the metal particles are still attracted to the sleeves 22 and leave the tee pipe 1 with the sleeves 22. The operator moves the cover plate 2 to the cleaning area, disconnects the mounting assembly 4 from the cover plate 2, removes the magnetic rods 3, and the metal particles detach from the sleeves 22 under the action of gravity and are collected by the operator. After cleaning the metal particles off the sleeve 22, the operator repeats the above steps to install the cover plate 2 and magnetic rod 3, and continues the magnetic filtration.

[0036] Reference Figure 2 An end cap 12 is installed on the outer peripheral wall of the vertical pipe 11 at the pipe opening. The end cap 12 is integrally formed with the vertical pipe 11, and the diameter of the cover plate 2 is the same as the outer diameter of the end cap 12. To prevent leakage at the connection between the cover plate 2 and the end cap 12 in the liquid, the sealing assembly 5 includes a rubber gasket 51, which is sandwiched between the cover plate 2 and the end cap 12. Several clamps 52 are installed on the cover plate 2. In embodiment 1, four clamps 52 are provided, and the four clamps 52 are arranged along the circumference of the cover plate 2. One end of the clamp 52 is rotatably connected to the cover plate 2 through a rotating shaft, and the other end is engaged with the end cap 12.

[0037] The operator first attaches the rubber gasket 51 to the top wall of the end cap 12, and then holds the handle 23 to control the cover plate 2 to drive the sleeve 22 into the vertical pipe 11 until the bottom wall of the cover plate 2 contacts the top wall of the rubber gasket 51. The clamp 52 is then rotated so that the end of the clamp 52 away from the cover plate 2 engages with the end cap 12. The cover plate 2 presses the rubber gasket 51 tightly onto the end cap 12, causing the rubber gasket 51 to undergo elastic deformation. A sealed space is formed by the inner wall of the tee pipe 1, the end wall of the end cap 12, the inner wall of the rubber gasket 51, the end wall of the cover plate 2, and the outer peripheral wall of the sleeve 22.

[0038] Reference Figure 2To facilitate the disassembly of the magnetic rod 3, the mounting assembly 4 includes several end caps 41, which are made of rubber in embodiment 1. The end caps 41 are fitted onto the end of the magnetic rod 3 near the cover plate 2, and are glued to the magnetic rod 3. The sidewalls of the end caps 41 are inclined inwards away from the cover plate 2 to guide the end caps 41 into the sleeve 22. The outer sidewall of the end cap 41 away from the magnetic rod 3 is press-fitted with the inner wall of the sleeve 22 to fix the magnetic rod 3 to the cover plate 2. A pull ring 411 is also installed on the end wall of the end cap 41 away from the magnetic rod 3, and the pull ring 411 passes through the end cap 41.

[0039] A cap 31 is provided at the end of the magnetic rod 3 away from the cover plate 2, and the magnetic rod 3 and the cap 31 are fixed together by adhesive. The side wall of the cap 31 is inclined inward away from the pull ring 411 to guide the cap 31 into the sleeve 22.

[0040] The operator attaches the gasket 31 to one end of the magnetic rod 3 and the end cap 41 to the other end. Holding the pull ring 411, the operator lifts the magnetic rod 3, aligning the gasket 31 with the through hole 21. The inclined sidewall of the gasket 31 guides the magnetic rod 3 through the through hole 21 and into the sleeve 22. The operator continues to lower the magnetic rod 3 until the inclined sidewall of the end cap 41 guides it into the sleeve 22. The operator applies vertical downward pressure to the pull ring 411, causing the end cap 41 to fit tightly against the sleeve 22. At this point, the bottom wall of the gasket 31, away from the pull ring 411, abuts against the bottom wall of the sleeve 22. The above steps are repeated to install all magnetic rods 3 in sequence. When it is necessary to remove the magnetic rod 3, the operator holds the pull ring 411 and lifts the end cap 41, the magnetic rod 3, and the gasket 31 together, completely detaching them from the sleeve 22. The above steps are repeated to remove all magnetic rods 3 in sequence.

[0041] The implementation principle of Example 1 is as follows: The operator makes a through hole 21 on the cover plate 2, connects the sleeve 22 to the cover plate 2 by welding, and rotates and installs four clamps 52 on the cover plate 2 respectively. The rubber gasket 51 is pasted onto the top wall of the end cap 12. Holding the handle 23, the operator controls the end of the sleeve 22 away from the cover plate 2 to enter the vertical pipe 11 through the pipe opening. The sleeve 22 is inserted at the junction of the tee pipe 1. Until the cover plate 2 contacts the rubber gasket 51, the clamps 52 are rotated and engaged with the end cap 12. The cover plate 2 presses the rubber gasket 51 tightly onto the end cap 12, and the cover plate 2 is installed. The gasket cap 31 and end cap 41 are pasted onto both ends of the magnetic rod 3 respectively. The operator holds the pull ring 411 to lift the magnetic rod 3 and align it with the through hole 21. The inclined sidewalls of the gasket cap 31 and end cap 41 guide the magnetic rod 3 into the sleeve 22. The end cap 41 and sleeve 22 are interference-fitted. After all magnetic rods 3 are installed, the operator controls the liquid to flow from the first horizontal pipe 13 into the junction of the tee pipe 1. Metal particles in the liquid are attracted to the outer peripheral wall of the sleeve 22 by the magnetic rods 3. The liquid, after magnetic filtration, flows out from the second horizontal pipe 14. When cleaning is required, the operator closes the valve, releases the clamp 52 from the end cap 12, and removes the cover plate 2. The metal particles remain attracted to the sleeve 22. The operator moves the cover plate 2 to the cleaning area, holds the pull ring 411, and removes all magnetic rods 3 in sequence, detaching the metal particles from the sleeve 22. This improves the efficiency of disassembling and installing the magnetic filtration device.

[0042] Example 2 Reference Figure 3 and Figure 4 The difference between this embodiment and embodiment 1 is that, in order to enable the simultaneous disassembly of multiple magnetic rods 3, no magnetic rod 3 is provided at the center of the cover plate 2. The mounting assembly 4 includes a tooling plate 42, which is detachably mounted on the cover plate 2 and located on the side of the cover plate 2 away from the sleeve 22. The diameter of the tooling plate 42 is smaller than the diameter of the cover plate 2. Several first protrusions 43 are installed on the outer peripheral wall of the tooling plate 42. In embodiment 2, ten first protrusions 43 are arranged in a circumferential array along the tooling plate 42 and are integrally formed with the tooling plate 42. A second protrusion 44 is installed on the cover plate 2 corresponding to the first protrusions 43. The second protrusions 44 are installed on the edge of the end wall of the cover plate 2 away from the sleeve 22. The second protrusions 44 have grooves 441 on the side wall of the cover plate 2 along the circumferential direction. The grooves 441 can accommodate the first protrusions 43, and the first protrusions 43 and the second protrusions 44 are engaged. Ten second protrusions 44 are arranged in a circumferential array along the cover plate 2 and are integrally formed with the cover plate 2.

[0043] The magnetic rod 3 is also detachably connected to the tooling plate 42. A short rod 45 is installed on the end wall of the magnetic rod 3 near the cover plate 2, and a handle 46 is installed on the end wall of the short rod 45 away from the magnetic rod 3. The handle 46 and the short rod 45 are integrally formed. The diameter of the short rod 45 is smaller than the diameter of the handle 46, and the diameter of the handle 46 is equal to the diameter of the magnetic rod 3. A circular hole 421 is formed on the tooling plate 42, and the diameter of the circular hole 421 is larger than the diameter of the magnetic rod 3. A through groove 422 is formed on one side of the circular hole 421 on the tooling plate 42. The through groove 422 penetrates the two end walls of the tooling plate 42 in the thickness direction and communicates with the circular hole 421. The diameter of the handle 46 is larger than the width of the through groove 422, and the short rod 45 can be inserted into the through groove 422 and move closer to or further away from the circular hole 421 along the length direction of the through groove 422.

[0044] When assembling the equipment, the operator controls the tooling plate 42 to approach the cover plate 2, aligning the first protrusion 43 with the gap between two adjacent second protrusions 44, until the bottom wall of the tooling plate 42 is in contact with the top wall of the cover plate 2. At this point, the through groove 422 is connected to the through hole 21. The tooling plate 42 is rotated clockwise until the first protrusion 43 enters the groove 441 of the second protrusion 44 and engages with the second protrusion 44, thus engaging the tooling plate 42 with the cover plate 2. At this point, the round hole 421 is connected to the through hole 21. The operator holds the handle 46 and guides the end of the magnetic rod 3 away from the handle 46 through the round hole 421 and the through hole 21 into the sleeve 22, until the magnetic rod 3 is fully inserted into the sleeve 22. The operator releases the handle 46, and the magnetic rod 3 remains in the sleeve 22 under gravity. The remaining magnetic rods 3 are then installed sequentially, completing the installation of the magnetic rods 3. When a single magnetic rod 3 needs to be replaced, simply grasp the handle 46 and pull out the magnetic rod 3 for replacement. When the magnetic rod 3 needs to be removed to clean the sleeve 22, rotate the tooling plate 42 counterclockwise until the first protrusion 43 disengages from the second protrusion 44, and the short rod 45 moves from the round hole 421 into the through groove 422. The bottom wall of the handle 46 near the short rod 45 is in contact with the top wall of the tooling plate 42 near the through groove 422. The operator controls the tooling plate 42 to rise, causing all the magnetic rods 3 to rise simultaneously and disengage from the sleeve 22.

[0045] Reference Figure 3 and Figure 4 The sealing assembly 5 includes several third protrusions 54, which are connected to the cover plate 2 via rods. In this embodiment, ten third protrusions 54 are provided, arranged circumferentially around the cover plate 2. A slot 121 is provided on the peripheral wall of the end cover 12 corresponding to the third protrusions 54. The end of the third protrusion 54 away from the cover plate 2 can be inserted into the slot 121 and slide along the length of the slot 121. The slot 121 is inclined clockwise upwards along the circumference of the end cover 12, and its top end penetrates the top wall of the end cover 12. A sealing ring 53 is sandwiched between the cover plate 2 and the end cover 12.

[0046] When it is necessary to connect the cover plate 2 and the end cap 12, the sealing ring 53 is attached to the end cap 12. The operator aligns the end of the third protrusion 54 away from the cover plate 2 with the top of the slot 121, and controls the cover plate 2 to move closer to the end cap 12 until the end of the third protrusion 54 away from the cover plate 2 is inserted into the slot 121 from above; while controlling the cover plate 2 to descend, it rotates counterclockwise, causing the third protrusion 54 to slide along the length of the slot 121 towards the bottom, until the third protrusion 54 moves to the bottom of the slot 121, and the cover plate 2 presses the sealing ring 53 onto the end cap 12.

[0047] Reference Figure 3 Because the cover plate 2, sleeve 22, and multiple magnetic rods 3 are quite heavy and difficult to lift manually, the liquid impurity magnetic filtration device also includes a drive assembly 6 to assist in the assembly and disassembly of the cover plate 2 and magnetic rods 3. The drive assembly 6 includes a lifting member 61, which in this embodiment is a vertically arranged cylinder. A work frame 7 is provided on the three-way pipe 1 and placed on the ground. The fixed end of the lifting member 61 is connected to the work frame 7 by bolts. The movable end of the lifting member 61 hangs above the three-way pipe 1 and is connected to a rotating rod 62. One end of the rotating rod 62 is rotatably connected to the movable end of the lifting member 61 through a rotating shaft, and the other end is connected to the tooling plate 42 by bolts. The axis of the rotating rod 62 coincides with the axis of the tooling plate 42, and the axis of the tooling plate 42 coincides with the axis of the cover plate 2 and the end cap 12. The lifting member 61 drives the tooling plate 42 and the cover plate 2 to rise or fall vertically through the rotating rod 62, and the rotating rod 62 can rotate along its axis.

[0048] Reference Figure 5A collar 63 is provided on the work frame 7, and the collar 63 is bolted to the work frame 7. The rotating rod 62 is always inserted into the collar 63. A first rotating groove 631 is formed on the inner wall of the collar 63, which is inclined clockwise downward along the circumference of the collar 63. A second rotating groove 632 is also formed on the inner wall of the collar 63, which is inclined clockwise upward along the circumference of the collar 63. Both the first rotating groove 631 and the second rotating groove 632 penetrate the two end walls of the collar 63 in the height direction. A first rotating block 621 and a second rotating block 622 are installed on the outer peripheral wall of the rotating rod 62. The end of the first rotating block 621 away from the rotating rod 62 can be inserted into the first rotating groove 631 and slide along the length direction of the inner wall of the first rotating groove 631. The end of the second rotating block 622 away from the rotating rod 62 can be inserted into the second rotating groove 632 and slide along the length direction of the inner wall of the second rotating groove 632. The first rotating block 621 is located at the end of the rotating rod 62 near the lifting member 61, and the second rotating block 622 is located at the end of the rotating rod 62 near the tooling plate 42. The inner peripheral wall of the collar 63, away from the first rotating groove 631 and the second rotating groove 632, is in contact with the outer peripheral wall of the rotating rod 62. To improve the stability of the rotation of the rotating rod 62, the number of the first rotating groove 631 and the second rotating groove 632 can be set to multiple without interference, and the first rotating block 621 and the second rotating block 622 are also set accordingly.

[0049] When the cover plate 2 installed on the end cover 12 needs to be removed for the first time, the movable end of the lifting member 61 descends to its lowest point. The operator then bolts the rotating rod 62 away from the bottom of the lifting member 61 to the center of the top wall of the tooling plate 42. At this time, the third protrusion 54 is inserted into the slot 121 and is located at the bottom of the slot 121, while the first protrusion 43 is inserted into the groove 441. The lifting member 61 is then activated, and the first rotating block 621 aligns with the first rotating groove 631. The movable end of the lifting member 61 drives the rotating rod 62 to rise, and the first rotating block 621 enters the first rotating groove 631 and moves upward along the inner wall of the first rotating groove 631. The rotating rod 62 then rotates clockwise. The rotating rod 62 rises and rotates clockwise, causing the tooling plate 42 to rise and rotate clockwise; the second protrusion 44 abuts against the inner wall of the groove 441 and causes the cover plate 2 to rise and rotate clockwise, and the third protrusion 54 rises along the inner wall of the slot 121 and rotates clockwise, and the cover plate 2 begins to leave the end cover 12. Until the first rotating block 621 leaves the first rotating groove 631, the third protrusion 54 simultaneously leaves the slot 121, and the cover plate 2 disengages from the end cover 12.

[0050] The movable end of the lifting component 61 drives the rotating rod 62 to continue rising. The rotating rod 62 drives the tooling plate 42 and the cover plate 2 to rise vertically until the sleeve 22, with metal particles adsorbed, leaves the vertical pipe 11. The operator places a box for collecting metal particles on the end cap 12, and temporarily places the cover plate 2 and the sleeve 22 on the box. At this time, the second rotating block 622 is aligned with the second rotating groove 632. The movable end of the lifting component 61 drives the rotating rod 62 to continue rising. The second rotating block 622 enters the second rotating groove 632 and moves upward along the inner wall of the second rotating groove 632. The rotating rod 62 rises and rotates counterclockwise. The rotating rod 62 drives the tooling plate 42 to rise and rotate counterclockwise. The cover plate 2 is fixed by the operator and does not rotate. The first protrusion 43 disengages from the inner wall of the groove 441 and begins to leave the second protrusion 44. The short rod 45 moves from the round hole 421 into the through groove 422. Until the second rotating block 622 leaves the second rotating groove 632, the first protrusion 43 completely disengages from the second protrusion 44 and moves between two adjacent second protrusions 44, and the short rod 45 is inserted into the through groove 422; the movable end of the lifting member 61 drives the rotating rod 62 to rise vertically, and the rotating rod 62 drives the tooling plate 42 and all the magnetic rods 3 to rise vertically together; until the rotating rod 62 is at its highest point, the magnetic rods 3 completely disengage from the sleeve 22, and the operator can easily clean and collect the metal particles outside the sleeve 22.

[0051] After cleaning is completed, the lifting component 61 drives the rotating rod 62 to descend, inserting the magnetic rod 3 into the sleeve 22, with the tooling plate 42 in contact with the cover plate 2. At this time, the second rotating block 622 enters the second rotating groove 632 from above, the rotating rod 62 descends and rotates clockwise, and the tooling plate 42 rotates clockwise accordingly, causing the first protrusion 43 to engage with the second protrusion 44, and the tooling plate 42 to engage with the cover plate 2. The operator moves the cleaning box, the rotating rod 62 descends vertically until the sleeve 22 is fully inserted into the vertical pipe 11, the third protrusion 54 is aligned with the top of the slot 121, and the tooling plate 42 drives the cover plate 2 to rotate counterclockwise and descend through friction, causing the third protrusion 54 to move to the bottom of the slot 121, and the cover plate 2 engages with the end cap 12.

[0052] The implementation principle of Example 2 is as follows: When assembling the filter device, the operator attaches the sealing ring 53 to the end cap 12, and controls the cover plate 2 to drive the sleeve 22 welded on it into the vertical pipe 11; the operator inserts the third protrusion 54 into the slot 121 from above, and the cover plate 2 rotates counterclockwise while descending, causing the third protrusion 54 to slide to the bottom of the slot 121, and the cover plate 2 is installed on the end cap 12. The operator controls the tooling plate 42 to be in contact with the cover plate 2 and rotates the tooling plate 42 clockwise, causing the first protrusion 43 to enter the groove 441 from one side of the second protrusion 44, and the tooling plate 42 and the cover plate 2 are engaged; at this time, the round hole 421 and the through hole 21 are connected. The operator holds the handle 46 and inserts the magnetic rod 3 into the sleeve 22 through the round hole 421 and the through hole 21.

[0053] When cleaning the sleeve 22 is required, the operator installs the rotating rod 62 on the tooling plate 42, activates the lifting component 61, and the first rotating block 621 moves upward along the inner wall of the first rotating groove 631. The rotating rod 62 drives the tooling plate 42 to rise and rotate clockwise. The second protrusion 44 presses against the inner wall of the groove 441 and drives the cover plate 2 to rise and rotate clockwise. The third protrusion 54 rises and rotates clockwise in the slot 121. This continues until the first rotating block 621 leaves the first rotating groove 631, the third protrusion 54 simultaneously leaves the slot 121, and the cover plate 2 detaches from the end cover 12. The lifting component 61 drives the rotating rod 62 to continue rising, causing the tooling plate 42 and the cover plate 2 to rise vertically until the sleeve 22, with metal particles adsorbed, leaves the vertical pipe 11. The second rotating block 622 moves upward along the inner wall of the second rotating groove 632; the rotating rod 62 drives the tooling plate 42 to rise and rotate counterclockwise, and the cover plate 2 is fixed by the operator; the first protrusion 43 disengages from the second protrusion 44, and the short rod 45 is inserted into the through groove 422; the lifting member 61 drives the rotating rod 62 to rise vertically, driving the tooling plate 42 and all the magnetic rods 3 to rise vertically together until the magnetic rods 3 are completely detached from the sleeve 22. This further improves the efficiency of disassembly and installation of the magnetic filter device.

[0054] This application also discloses a filtration method using a magnetic filtration device for liquid impurities. The filtration method includes: Cover plate assembly: The sleeve 22 is brazed onto the cover plate 2 according to the design position, and the cover plate 2 is completed. The sealing ring 53 is pasted on the top wall of the end cover 12, and the cover plate 2 is controlled to drive the sleeve 22 into the vertical pipe 11; the third protrusion 54 is aligned with the top of the slot 121, and the cover plate 2 is controlled to move closer to the end cover 12 until the third protrusion 54 is inserted into the slot 121 from above; while the cover plate 2 is lowered, it is controlled to rotate counterclockwise by 10°, so that the third protrusion 54 slides along the length of the slot 121 towards the bottom of the slot 121 until the third protrusion 54 moves to the bottom of the slot 121, and the cover plate 2 presses the sealing ring 53 tightly onto the end cover 12; the inner wall of the tee pipe 1, the top wall of the end cover 12, the inner wall of the sealing ring 53, the bottom wall of the cover plate 2 and the outer wall of the sleeve 22 form a sealed space.

[0055] Magnetic rod installation: Position the tooling plate 42 close to the cover plate 2, aligning the first protrusion 43 with the gap between two adjacent second protrusions 44, until the bottom wall of the tooling plate 42 is in contact with the top wall of the cover plate 2. At this point, the through groove 422 connects with the through hole 21. Rotate the tooling plate 42 clockwise by 10° until the first protrusion 43 enters the groove 441 of the second protrusion 44 and engages with it, thus engaging the tooling plate 42 with the cover plate 2. At this point, the round hole 421 connects with the through hole 21. Hold the handle 46 and guide the end of the magnetic rod 3 away from the handle 46 through the round hole 421 and the through hole 21 into the sleeve 22, until the magnetic rod 3 is fully inserted into the sleeve 22. The operator releases the handle 46, and the magnetic rod 3 remains in the sleeve 22 under gravity. Repeat this process for all magnetic rods 3.

[0056] Liquid filtration: The liquid to be filtered flows in from the first horizontal pipe 13. When the liquid reaches the junction of the three-way pipe 1, it comes into uniform contact with the outer peripheral walls of multiple sleeves 22. The metal particles in the liquid are attracted to the outer peripheral walls of the sleeves 22 by the magnetic rod 3. The liquid that has been magnetically filtered flows out from the second horizontal pipe 14.

[0057] Impurity removal: Lower the movable end of the lifting component 61 to its lowest point, and connect the bottom end of the rotating rod 62 to the tooling plate 42 with bolts. Start the lifting component 61 to drive the rotating rod 62 to rise. The first rotating block 621 enters the first rotating groove 631 and moves upward along the inner wall of the first rotating groove 631. The rotating rod 62 rises and rotates clockwise, driving the tooling plate 42 to rise and rotate clockwise. The second protrusion 44 abuts against the inner wall of the groove 441 and drives the cover plate 2 to rise and rotate clockwise. The third protrusion 54 rises along the inner wall of the slot 121 and rotates clockwise. The cover plate 2 begins to leave the end cover 12. Until the first rotating block 621 leaves the first rotating groove 631, the rotating rod 62, the tooling plate 42, and the cover plate 2 rotate clockwise 10° while rising. The third protrusion 54 leaves the slot 121, and the cover plate 2 disengages from the end cover 12. The lifting component 61 drives the rotating rod 62 to continue rising, and the rotating rod 62 drives the tooling plate 42 and the cover plate 2 to rise vertically until the sleeve 22 adsorbs the metal particles and leaves the vertical pipe 11.

[0058] A box for collecting metal particles is placed on the end cap 12, and the cover plate 2 and sleeve 22 are temporarily placed on the box. The lifting member 61 drives the rotating rod 62 to continue to rise, and the second rotating block 622 moves upward along the inner wall of the second rotating groove 632; the rotating rod 62 rises and rotates counterclockwise, and the rotating rod 62 drives the tooling plate 42 to rise and rotate counterclockwise, while the cover plate 2 is fixed and does not rotate. Until the second rotating block 622 leaves the second rotating groove 632, the rotating rod 62 and the tooling plate 42 rotate counterclockwise by 10° while rising, the first protrusion 43 completely disengages from the second protrusion 44 and moves between two adjacent second protrusions 44, and the short rod 45 is inserted into the through groove 422. The lifting member 61 drives the rotating rod 62 to rise vertically, and the rotating rod 62 drives the tooling plate 42 and all the magnetic rods 3 to rise vertically together; until the rotating rod 62 is at its highest point, the magnetic rods 3 completely disengage from the sleeve 22, cleaning the metal particles outside the sleeve 22.

[0059] The implementation principle of the filtration method of the liquid impurity magnetic filtration device in this application embodiment is as follows: the sleeve 22 is brazed onto the cover plate 2; the cover plate 2 is disassembled and installed onto the vertical pipe 11 by the snap-fit ​​of the third protrusion 54 and the end cap 12; the tooling plate 42 is disassembled and connected to the cover plate 2 by the snap-fit ​​of the first protrusion 43 and the second protrusion 44; and the magnetic rod 3 is disassembled and connected to the tooling plate 42. A lifting component 61 is provided to control the vertical movement and horizontal rotation of the tooling plate 42, realizing the disassembly of all magnetic rods 3 and the cleaning of the sleeve 22, which facilitates the disassembly and installation of the magnetic filtration device.

[0060] 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 magnetic filtration device for liquid impurities, characterized in that: The device includes a three-way pipe (1), a cover plate (2) installed at the opening of the three-way pipe (1), and several sleeves (22) installed through the cover plate (2). The end of each sleeve (22) away from the cover plate (2) is closed. A magnetic rod (3) is inserted into each sleeve (22). The end of the magnetic rod (3) away from the cover plate (2) extends to the intersection of the three-way pipe (1). An installation assembly (4) is installed on the magnetic rod (3) for installing the magnetic rod (3) on the cover plate (2). The installation assembly (4) is detachably connected to the cover plate (2). A sealing assembly (5) is installed on the cover plate (2) for sealing the cover plate (2) and the three-way pipe (1). The mounting assembly (4) includes a tooling plate (42) and a plurality of first protrusions (43). The tooling plate (42) covers the end wall of the cover plate (2) away from the tee pipe (1). The end of the magnetic rod (3) near the cover plate (2) is detachably connected to the tooling plate (42). A plurality of first protrusions (43) are mounted on the tooling plate (42) and arranged in a circumferential array along the tooling plate (42). A plurality of second protrusions (44) are mounted on the cover plate (2). The first protrusions (43) can engage with the second protrusions (44). Several sleeves (22) are arranged in a circumferential array along the cover plate (2). A short rod (45) is installed on the end wall of the magnetic rod (3) near the cover plate (2). A handle (46) is installed on the end of the short rod (45) away from the magnetic rod (3). The diameter of the handle (46) is equal to the diameter of the magnetic rod (3) and larger than the diameter of the short rod (45). A circular hole (421) is opened on the tooling plate (42). The diameter of the tooling plate (42) is larger than the diameter of the magnetic rod (3); a through groove (422) is provided on one side of the circular hole (421) on the tooling plate (42), the through groove (422) penetrates the two end walls in the thickness direction of the tooling plate (42), and the through groove (422) is connected to the circular hole (421). The short rod (45) can be inserted into the through groove (422), and the diameter of the handle (46) is larger than the width of the through groove (422).

2. The liquid impurity magnetic filtration device according to claim 1, characterized in that: The liquid impurity magnetic suction filter also includes a drive assembly (6), which includes a lifting component (61), a rotating rod (62), and a collar (63). A working frame (7) is provided outside the three-way pipe (1). The fixed end of the lifting component (61) is installed on the working frame (7), and the movable end of the lifting component (61) is rotatably connected to the rotating rod (62). The end of the rotating rod (62) away from the lifting component (61) is connected to the tooling plate (42). The collar (63) is installed on the working frame (7), and the rotating rod (62) is inserted into the collar (63). An opening is made on the inner wall of the collar (63). The device is provided with a first rotating groove (631) and a second rotating groove (632). The first rotating groove (631) and the second rotating groove (632) are arranged to rotate upward along the circumference of the collar (63) and rotate in opposite directions. A first rotating block (621) and a second rotating block (622) are installed on the outer peripheral wall of the rotating rod (62). The first rotating block (621) can be inserted into the first rotating groove (631) and slide along the inner wall of the first rotating groove (631). The second rotating block (622) can be inserted into the second rotating groove (632) and slide along the inner wall of the second rotating groove (632).

3. The liquid impurity magnetic filtration device according to claim 1, characterized in that: The magnetic rod (3) is provided with a pad (31) at the end away from the cover plate (2). The side wall of the pad (31) is inclined to guide the magnetic rod (3) into the sleeve (22).

4. A filtration method using the magnetic suction filtration device for liquid impurities as described in claim 1, characterized in that, Includes the following steps: Cover plate assembly: Install several of the sleeves (22) on the cover plate (2) according to the design position, connect one end of the sealing component (5) to the tee pipe (1) and the other end to the cover plate (2), so that the cover plate (2) is installed on the tee pipe (1); Magnetic rod installation: Insert the magnetic rod (3) into the sleeve (22) and connect the magnetic rod (3) and the cover plate (2) through the installation assembly (4); Liquid filtration: The liquid to be filtered is input from the first horizontal pipe (13) of the three-way pipe (1), passes through the junction of the three-way pipe (1), and is output from the second horizontal pipe (14). The metal particles in the liquid are adsorbed by the magnetic rod (3) onto the outer wall of the sleeve (22). Impurity removal: Disconnect the cover plate (2) from the sealing assembly (5), and after the cover plate (2) drives the magnetic rod (3) to detach from the tee pipe (1), disconnect the installation assembly (4) from the cover plate (2), pull the magnetic rod (3) out of the sleeve (22), collect the metal particles that fall off on their own, and clean the metal particles attached to the outer peripheral wall of the sleeve (22).

5. The filtration method according to claim 4, characterized in that: The sleeve (22) and the cover plate (2) are welded together using brazing in the cover plate assembly step.

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