A filtration device for preparing polishing resin regenerator

Abstract

This invention relates to the field of polishing resin regenerator preparation technology, specifically proposing a filtration device for polishing resin regenerator preparation; comprising: a base with a turntable rotatably mounted on its top about a vertical axis; an outer cylinder fixed to the top of the base; an inner cylinder detachably fixed to the turntable; multiple guide cylinders evenly distributed circumferentially and inserted into the outer wall of the inner cylinder; multiple filter cylinders, alternating with the multiple guide cylinders; each filter cylinder includes a filter cylinder body and an outer clamping frame, and a vibration assembly assembled on the outer cylinder; when any filter cylinder rotates intermittently with the turntable until it contacts the vibration assembly, the vibration assembly vibrates the outer clamping frame, indirectly causing the secondary filter screen to vibrate accordingly; the device provided by this invention has an inward-inward-outward filtration layout, and the alternating distribution of guide cylinders and filter cylinders reduces filtration resistance, improves filter surface utilization and filtration efficiency, and allows for independent cleaning of each filter cylinder without stopping the machine, enabling efficient continuous filtration.

Description

Technical Field

[0001] This invention relates to the field of polishing resin regenerator preparation technology, and specifically proposes a filtration device for preparing polishing resin regenerator. Background Technology

[0002] Polishing resin is a high-precision ion exchange resin used in the preparation of ultrapure water. It is mainly used to remove trace ions, organic matter, and particulate matter from water to achieve extremely high water purity. Polishing resin regenerator is a chemical agent used to restore the ion exchange capacity of failed polishing resin. Its core function is to replace the impurity ions adsorbed by the polishing resin during use through a chemical reaction, so that the resin can regain its ability to adsorb trace ions in water, thereby prolonging the adsorption effect of the polishing resin.

[0003] Polishing resin regenerators usually need to be prepared into solutions before use. However, when the purity of the polishing resin regenerator itself is not high, it may contain solid impurities such as mud, metal oxide particles, or unreacted raw material residues. Alternatively, the polishing resin regenerator may precipitate during dissolution due to temperature changes, excessively high concentration, or impurity reactions. When these impurities enter the polishing resin bed with the solution, they can clog the gaps between resin particles, affecting the uniform distribution of the regenerated solution; they can adhere to the resin surface, hindering ion exchange reactions; they can contaminate the polishing resin, reducing its adsorption capacity and weakening its adsorption effect; and they may even clog the piping system of ultrapure water preparation equipment. Therefore, polishing resin regenerator solutions containing a large number of impurities or with precipitates after dissolution need to be filtered.

[0004] In current technology, polishing resin regenerators are generally filtered using a combination of screens and membranes. First, coarse filtration is performed using a screen to remove larger particles, followed by fine filtration using a membrane to remove even the smallest impurities. Therefore, two sets of equipment are typically used: a screen coarse filtration system and a membrane fine filtration system. Existing screen coarse filtration equipment generally incorporates multiple screen stages to improve filtration efficiency. However, existing screen filtration equipment is too simple in construction and suffers from the following problems: 1. The screen layout has a small effective filtration area, resulting in relatively high resistance during filtration and affecting the filtration effect.

[0005] 2. Most of them rely on the gravity of the solution for filtration, so the directional flow of the solution is poor during filtration and it affects the uniform passage of the solution across the entire filtration surface.

[0006] 3. The equipment is not equipped with a mechanism for automatic cleaning of the filter screen and collection of impurities. As filtration proceeds, the filter screen will gradually become clogged, which will affect the filtration efficiency. If necessary, the machine needs to be stopped to clean and maintain the filter screen, which greatly affects the continuity of filtration production. Summary of the Invention

[0007] To address the aforementioned problems, the present invention provides a filtration device for preparing polishing resin regenerator, which solves the problems mentioned in the background art.

[0008] To achieve the above objectives, the present invention employs the following technical solution: a filtration device for preparing a polishing resin regenerator, comprising: a base, on which a turntable is rotatably mounted about a vertical axis; an outer cylinder, fixed to the top of the base, with the turntable coaxially located inside the outer cylinder; an inner cylinder, coaxially disposed inside the outer cylinder and detachably fixed to the turntable; multiple drainage cylinders, evenly distributed circumferentially and inserted into the outer wall of the inner cylinder; multiple filter cylinders, alternately distributed with the multiple drainage cylinders; the drainage cylinders attract liquid from the inner cylinder to the filter cylinders; each filter cylinder includes a filter cylinder body and an outer clamping frame, the filter cylinder body including an arc frame, a bottom frame, and an inner clamping frame, the arc frame being inserted into adjacent... The drainage tubes are positioned between and in contact with the outer wall of the inner tube; the bottom frame of the tube has a U-shaped structure and is fixed to the outer arc surface of the arc frame near the bottom end, the inner frame is fixed to its top along the inner edge of the bottom frame, and both ends of the inner frame are fixed to the outer arc surface of the arc frame; a primary filter screen is fixed on the arc frame, and a secondary filter screen with smaller filter holes than the primary filter screen is vertically inserted into the bottom frame; the outer clamping frame is movably assembled on the bottom frame and located on the outer periphery of the inner frame, and the secondary filter screen is clamped between the inner frame and the outer clamping frame; the excitation assembly is assembled on the outer tube; when any filter tube rotates intermittently with the turntable until it contacts the excitation assembly, the excitation assembly excites the outer clamping frame, indirectly causing the secondary filter screen to vibrate accordingly.

[0009] Preferably, the outer clamping frame includes a front frame and two side frames; the front frame is horizontally slidably mounted on the bottom frame at the side end opposite to the arc frame, and the two side frames are horizontally slidably mounted on the bottom frame at the other two side ends; flexible connecting strips are fixedly connected between the two side frames and the front frame, as well as between the two side frames and the arc frame; arc-shaped guide grooves are opened at both ends of the top of the front frame, and pins are vertically fixed at the top of the two side frames, the pins are inserted into the adjacent guide grooves, and the pins move along the guide grooves.

[0010] Preferably, an arc-shaped ear plate is fixed on the outer side wall of the front frame near the top, and multiple balls are movably embedded on the side wall of the ear plate to roll in contact with the inner wall of the outer cylinder; when the balls contact the inner wall of the outer cylinder, both the front frame and the side frame are clamped on the secondary filter screen.

[0011] Preferably, the front frame has multiple first frame strips distributed inside, and the side frame has multiple second frame strips distributed inside; both the first and second frame strips are fixed with flexible actuating strips, and the actuating strips have multiple flexible contact points distributed along their length, which contact the secondary filter.

[0012] Preferably, the outer cylinder has a notch at the top, and an extension chamber is fixed on the outer wall of the outer cylinder at the notch; the excitation assembly is assembled on the extension chamber, and the excitation assembly includes an ultrasonic motor fixed on the outer wall of the extension chamber and an excitation block fixed on the output shaft of the ultrasonic motor. The excitation block is horizontally slidably installed in the extension chamber along the axial direction of the outer cylinder, and the excitation block is in contact with the ball bearing vibration.

[0013] Preferably, the drainage tube includes a connector that is vertically inserted into the inner tube and a square tube fixed to the connector; the square tube has grid holes on the sides located on both radial sides of the inner tube, and a partition that separates the two sides where the grid holes are located is vertically inserted into the square tube; an arc frame is inserted between two adjacent connectors.

[0014] Preferably, the contact surface between the exciter block and the ball is an arc surface with the same curvature as the inner wall of the outer cylinder. When the exciter block slides to the position closest to the center of the outer cylinder, the arc surface of the exciter block coincides with the inner wall of the outer cylinder.

[0015] Preferably, the bottom end of the cylinder frame is provided with a waste discharge connector that is inserted through the turntable; a waste discharge cylinder is coaxially fixed at the bottom end of the turntable, and a plurality of waste discharge pipes are assembled on the waste discharge cylinder, one end of which is connected to a plurality of waste discharge connectors, and the other end of the waste discharge pipes is inserted into the waste discharge cylinder; a waste discharge hole is provided on the turntable to connect the inner cylinder and the waste discharge cylinder.

[0016] Preferably, the bottom end of the square cylinder is provided with a drain connector that is inserted through the turntable, and the bottom end of the partition is provided with a notch that avoids the inner port of the drain connector; the waste discharge cylinder is equipped with a drain pipe assembly, which includes a circular pipe fixed on the outer wall of the waste discharge cylinder, and the circular pipe is provided with multiple branch pipes that correspond one-to-one with multiple drain connectors.

[0017] Preferably, a crimping cylinder is detachably fixed to the top of the built-in cylinder, and the flow guide cylinder and the filter cylinder are clamped between the crimping cylinder and the turntable.

[0018] The above technical solution has the following advantages or beneficial effects: This invention provides a filtration device for preparing polishing resin regenerator, which is equipped with an inner cylinder that rotates with a turntable. Multiple guide cylinders and filter cylinders are installed alternately around the inner cylinder, forming an inward-inward-outward filtration layout. The filter cylinders not only have the function of multi-stage gradient filtration, but also increase the overall filtration area, relatively reducing the filtration resistance. The alternately dispersed guide design can provide each filter cylinder with a wrap-around, undifferentiated, and uniformly dispersed guiding force, which can enhance the uniform flow rate of the solution across the entire filtration surface, avoid localized overloading of the filter screen, enhance solution flow, and improve the solution filtration efficiency. This design improves the overall utilization efficiency of the filter screen. The outer cylinder is equipped with a vibration component that works with each filter cartridge. This allows the filter cartridges to be cleaned at high frequency by the vibration component under the intermittent drive of the turntable. While cleaning each filter cartridge individually, the drainage tube helps to isolate the filter cartridges from adjacent ones, allowing other filter cartridges to continue filtering. The filter cartridges can be cleaned in a timely manner without stopping the machine, and impurities can be discharged promptly, enabling efficient and continuous filtration. In addition, the device uses a positioning plug-in quick-release structure, which facilitates filter screen replacement and regular disassembly and cleaning of the device. Attached Figure Description

[0019] The invention, its features, shape, and advantages will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings. Like reference numerals denote like parts throughout the drawings, which are not intentionally drawn to scale; the focus is on illustrating the spirit of the invention.

[0020] Figure 1 This is a three-dimensional structural schematic diagram of a filtration device for preparing polishing resin regenerator provided by the present invention.

[0021] Figure 2 This is a perspective cross-sectional view of a filtration device for preparing polishing resin regenerator provided by the present invention.

[0022] Figure 3 yes Figure 2 A magnified view of a portion of point A in the middle.

[0023] Figure 4 This is a three-dimensional structural diagram of a filtration device for preparing polishing resin regenerator provided by the present invention, after removing the base, rotary bearing, and outer cylinder.

[0024] Figure 5 It is a three-dimensional structural diagram of the turntable, drainage tube assembly, internal cylinder, and multiple drainage cylinders assembled together.

[0025] Figure 6 It is a three-dimensional structural diagram of the turntable, waste discharge pipe, waste discharge cylinder, internal cylinder, and multiple filter cartridge bodies assembled together.

[0026] Figure 7 It is a three-dimensional structural diagram of the assembly of the positioning plate and the turntable.

[0027] Figure 8 This is a three-dimensional structural diagram of the internal cylinder.

[0028] Figure 9 This is a three-dimensional sectional view of the drainage tube.

[0029] Figure 10 This is a 3D structural diagram of the filter cartridge.

[0030] Figure 11 This is a three-dimensional structural diagram of the filter cartridge body.

[0031] Figure 12 It is a three-dimensional structural diagram of the outer frame.

[0032] Figure 13 yes Figure 12 A magnified view of a section at point B in the middle.

[0033] Figure 14 It is a 3D structural diagram of the front frame and the touch strip assembly.

[0034] Figure 15 It is a three-dimensional structural diagram of the side frame and the touch strip assembly.

[0035] In the diagram: 1. Base; 11. Rotary bearing; 12. Turntable; 121. Positioning plate; 122. Waste discharge hole; 123. Positioning groove; 13. Waste discharge cylinder; 14. Drainage pipe assembly; 141. Circular pipe; 142. Branch pipe; 15. Waste discharge pipe; 2. Outer cylinder; 21. Extended chamber; 3. Inner cylinder; 31. Liquid outlet window; 32. Positioning part; 321. Insert strip; 322. Axial groove; 33. Crimping cylinder; 4. Drainage cylinder; 41. Insert frame; 411. Cover plate; 42. Square cylinder; 421. Grille hole; 422. Drainage connector; 423. Scraper; 43. Partition plate; 5. Filter cartridge; 6. Filter cartridge body; 61. Arc frame; 62. Bottom frame; 621. Filter screen slot; 622. Waste discharge connector; 63. Inner frame; 631. Inner frame strip; 64. Primary filter screen; 65. Secondary filter screen; 7. Outer clamp frame; 71. Front frame; 711. Ear plate; 712. Ball bearing; 713. First frame strip; 714. Guide groove; 72. Side frame; 721. Second frame strip; 722. Pin; 73. Connecting strip; 74. Actuating strip; 741. Contact point; 8. Vibration assembly; 81. Ultrasonic motor; 82. Vibration block. Detailed Implementation

[0036] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0037] To enable those skilled in the art to better understand the present invention, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0038] like Figure 1 , Figure 2 , Figure 4 , Figure 7 and Figure 8As shown, a filter device for preparing polishing resin regenerator includes a base 1. A rotary bearing 11 is horizontally fixed to the top of the base 1 by bolts. A turntable 12 is sealed and welded to the inner ring of the rotary bearing 11. A positioning plate 121 is coaxially fixed to the upper end face of the turntable 12 by bolts. A waste discharge cylinder 13 is coaxially fixed to the bottom end of the turntable 12 by bolts. A circular waste discharge hole 122 is provided through the center of both the turntable 12 and the positioning plate 121, and the waste discharge hole 122 connects to the waste discharge cylinder 13. An electric butterfly valve can be installed in the waste discharge hole 122 to control the opening and closing of the channel. An outer cylinder 2 is fixed to the top of the base 1 by bolts. The turntable 12 is coaxially located inside the outer cylinder 2. It should be noted that, in order to ensure sealing, the rotary bearing 11 is an existing sealed bearing. In addition, the side wall of the turntable 12 is in rotational contact with the inner wall of the outer cylinder 2. Eight positioning grooves 123 are evenly distributed circumferentially on the side wall of the positioning plate 121. The axial ends are open; the positioning plate 121 is equipped with an inner cylinder 3, and eight liquid outlet windows 31 are evenly distributed circumferentially on the cylinder wall of the inner cylinder 3. The inner cylinder 3 is also provided with eight positioning parts 32, which are evenly distributed circumferentially with the eight liquid outlet windows 31. The positioning parts 32 are provided with insert strips 321 protruding from the inner wall of the inner cylinder 3. The positioning parts 32 are provided with axial grooves 322 extending axially to both ends on the outer wall of the inner cylinder 3. The axial grooves 322 are equidistantly arranged between two adjacent liquid outlet windows 31 in the circumferential direction of the inner cylinder 3. The inner cylinder 3 is inserted into the eight positioning grooves 123 of the positioning plate 121 one by one through the eight insert strips 321. The inner wall of the inner cylinder 3 is in contact with the side wall of the positioning plate 121. When the inner cylinder 3 is inserted to the bottom end and contacts the upper end face of the turntable 12, the inner cylinder 3 can be locked and fixed on the positioning plate 121 by screws. Obviously, the inner cylinder 3 is coaxially arranged in the outer cylinder 2. In this embodiment, the turntable 12 is configured to rotate intermittently. In order to drive the turntable 12 to rotate, a gear ring can be fixedly mounted on the waste discharge cylinder 13. A servo motor can be mounted on the base 1 via a motor frame, and a gear that meshes with the gear ring is mounted on the output shaft of the servo motor. The turntable 12 is indirectly driven to rotate by driving the waste discharge cylinder 13 through the servo motor. In this embodiment, the turntable 12 rotates one-eighth of a revolution intermittently each time. The above-mentioned implementation method of driving the turntable 12 to rotate through the cooperation of the servo motor and the gear ring is an optional implementation method. Its driving structure is not shown in the figure.

[0039] like Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 9As shown, in this invention, when filtering the polishing resin regenerator preparation solution, the solution is introduced from the inner cylinder 3. In order to enhance the initiative of the solution flowing outward from the inner cylinder 3 during filtration, eight guide cylinders 4 are evenly distributed on the outer wall of the inner cylinder 3, and the eight guide cylinders 4 are installed one-to-one at the eight axial grooves 322. The drainage tube 4 includes a connector 41 vertically inserted into the axial groove 322 and a square tube 42 fixed to the connector 41 by screws. The top of the square tube 42 is open, and the bottom of the square tube 42 is provided with a drainage connector 422 that is inserted through the turntable 12. The drainage connector 422 and the through hole of the turntable 12 are reinforced with a rubber sleeve. In addition, the drainage connector 422 has a square tube structure, which plays a positioning role in the assembly of the drainage tube 4. The square tube 42 has grid holes 421 on the sides located on both radial sides of the inner tube 3. A partition 43 is vertically inserted into the square tube 42, which equidistantly separates the two sides where the grid holes 421 are located. The partition 43 divides the inner cavity of the square tube 42 into two equal parts that cooperate with the two sides where the grid holes 421 are located. In this embodiment, the drainage connector 422 is also centrally located relative to the two grid holes 421 on the side of the relatively independent drainage chamber. To ensure the synchronous communication between the two drainage chambers and the drainage connector 422, a notch is provided on the partition plate 43 directly above the inner port of the drainage connector 422. A cover plate 411 is welded to the top of the plug-in bracket 41 to cover the top of the square cylinder 42, and the cover plate 411 presses the partition plate 43 into the square cylinder 42. A scraper 423 is also welded to the outer wall of the square cylinder 42 away from the center of the inner cylinder 3. The blade of the scraper 423 contacts the inner wall of the outer cylinder 2. When cleaning the device, the scraper 423 can assist in cleaning the inner wall of the outer cylinder 2 as the drainage cylinder 4 rotates with the inner cylinder 3 and the turntable 12.

[0040] like Figure 4 and Figure 5 As shown, the waste discharge cylinder 13 is equipped with a drainage pipe assembly 14. The drainage pipe assembly 14 includes a circular annular pipe 141 fixed to the outer wall of the waste discharge cylinder 13 by a fixing block. The circular annular pipe 141 is circumferentially evenly distributed with eight branch pipes 142 that correspond one-to-one with eight drainage connectors 422. In this embodiment, the circular annular pipe 141 can be further connected to a right-angle bend, and one end of the right-angle bend is connected to a rotary pipe joint. The rotary pipe joint is coaxially arranged with the turntable 12. The rotary pipe joint is further connected to an existing water pump through a hose. The water pump provides driving force to enhance the fluidity of the solution during filtration. In addition, in order to facilitate quick disassembly and assembly, the end of the branch pipe 142 connected to the drainage connector 422 is equipped with a sealing ring. When the drainage connector 422 is inserted into the branch pipe 142 along with the drainage cylinder 4 inserted into the inner cylinder 3, a sleeve-type sealing connection is achieved.

[0041] like Figure 3 , Figure 6 , Figure 10 and Figure 11 As shown, eight filter cylinders 5 are circumferentially distributed on the outer wall of the inner cylinder 3, evenly spaced with eight drainage cylinders 4. The eight filter cylinders 5 correspond one-to-one with the eight liquid outlet windows 31. The filter cylinder 5 includes a filter cylinder body 6 and an outer clamping frame 7. The filter cylinder body 6 includes an arc frame 61, a bottom frame 62, and an inner support frame 63. The arc frame 61 is inserted between adjacent insertion brackets 41 and fits against the outer wall of the inner cylinder 3. The bottom frame 62 has a U-shaped structure and is welded to the outer arc surface of the arc frame 61 near the bottom end. The bottom ends of the bottom frame 62 and the arc frame 61 are flush. The inner support frame 63 is welded to the top of the bottom frame 62 along the inner edge line of the bottom frame 62, and both ends of the inner support frame 63 are welded to the outer arc surface of the arc frame 61. The arc frame 61 has a frame opening with a circumference of 61. A primary filter 64 is embedded and fixed in the groove of the arc frame 61. A filter slot 621 is provided on the bottom frame 62 from top to bottom. The filter slot 621 extends along the edge contour of the bottom frame 62. A secondary filter 65 with a smaller filter hole than the primary filter 64 is vertically inserted into the filter slot 621. In order to improve the stability and sealing of the secondary filter 65 in the filter slot 621, the filter slot 621 is covered with a rubber layer. It should be noted that the main impurities contained in different types of polishing resin regenerators are different, and the particle size of the impurities is also different. Therefore, when selecting the primary filter 64 and the secondary filter 65, the filter hole size of the two filters depends on the type of polishing resin regenerator being filtered.

[0042] like Figure 4 , Figure 10 , Figure 11 , Figure 12 , Figure 13 , Figure 14 and Figure 15 As shown, the outer clamping frame 7 is movably mounted on the bottom frame 62 and located on the periphery of the inner frame 63. The secondary filter screen 65 is clamped between the inner frame 63 and the outer clamping frame 7. The outer clamping frame 7 includes a front frame 71 and two side frames 72. The front frame 71 is horizontally slidably mounted on the bottom frame 62 at the side end opposite to the arc frame 61. The two side frames 72 are horizontally slidably mounted on the bottom frame 62 at the other two side ends. Two sliding grooves are provided on the bottom frame 62 at the side ends that mate with the front frame 71 and the side ends that mate with the side frames 72. The two side frames 72 and Flexible connecting strips 73 are glued and fixedly connected between the front frame 71 and the arc frame 61. The connecting strips 73 are made of rubber, have high elasticity, and can respond quickly to vibration. It should be noted that the connecting strips 73 provide a certain sealing effect, but here, the connecting strips 73 are mainly used to provide an elastic force equivalent to a spring. The top two ends of the front frame 71 are provided with arc-shaped guide grooves 714. The top of the two side frames 72 are vertically welded with pins 722. The pins 722 are inserted into the adjacent guide grooves 714 and move along the guide grooves 714.

[0043] like Figure 10 , Figure 12 , Figure 14 and Figure 15 As shown, multiple first frame strips 713 are distributed within the front frame 71, and multiple second frame strips 721 are distributed within the side frame 72. Flexible actuating strips 74 are glued and fixed to both the first frame strips 713 and the second frame strips 721. The actuating strips 74 are made of the same material as the connecting strips 73. Multiple flexible contact points 741 are distributed along the length of the actuating strips 74. The contact points 741 contact the secondary filter 65. To prevent the secondary filter 65 from being excessively deformed, an inner frame strip 631 is provided on the inner frame 63 corresponding to each first frame strip 713 and second frame strip 721. The inner frame strip 631 provides a fulcrum for the contact points 741 to press against the secondary filter 65. An arc-shaped ear plate 711 is welded to the outer side wall of the front frame 71 near the top. Multiple balls 712 are movably embedded in the side wall of the ear plate 711 and roll in contact with the inner wall of the outer cylinder 2. When the balls 712 contact the inner wall of the outer cylinder 2, the front frame 71 and the side frame 72 are clamped on the secondary filter screen 65. The secondary filter screen 65 is attached to the inner frame 63. At this time, the connecting strip 73 and the contact point 741 are in a compressed state.

[0044] like Figure 6 As shown, a waste discharge connector 622 is provided at the bottom end of the bottom frame 62 and is inserted through the turntable 12. The waste discharge connector 622 and the through hole of the turntable 12 are also reinforced with a rubber sleeve for sealing. The waste discharge connector 622 is a square tube structure, which plays a positioning role in the insertion and assembly of the filter cylinder 5. The waste discharge cylinder 13 is equipped with eight waste discharge pipes 15, one end of which is connected to the eight waste discharge connectors 622. The other end of the waste discharge pipe 15 is inserted into the waste discharge cylinder 13. Here, the end of the waste discharge pipe 15 that is connected to the waste discharge connector 622 has a built-in sealing ring. In order to facilitate quick disassembly, the waste discharge connector 622 is inserted into the waste discharge pipe 15 synchronously with the insertion and installation of the filter cylinder 5. In addition, each waste discharge pipe 15 is equipped with an independently controlled solenoid valve.

[0045] like Figure 1 , Figure 2 and Figure 3 As shown, to ensure the stability of the insertion and installation of the diversion cylinder 4 and the filter cylinder 5, a crimping cylinder 33 is detachably fixed to the top of the inner cylinder 3 by bolts. The diversion cylinder 4 and the filter cylinder 5 are clamped between the crimping cylinder 33 and the turntable 12. Through the above quick-release structure combination design, when the filtration device needs to be cleaned regularly, or when the primary filter screen 64 and the secondary filter screen 65 need to be replaced, each diversion cylinder 4 and filter cylinder 5 can be quickly removed and cleaned individually. In addition, the tops of both the square cylinder 42 and the filter cylinder 5 are open, which also facilitates internal cleaning.

[0046] When filtering the polishing resin regenerator solution, the solution is injected into the inner cylinder 3 from the crimping cylinder 33. The solution enters each filter cylinder 5 through the outlet window 31, then passes through the primary filter screen 64 and the secondary filter screen 65 and flows in the outer space of the inner cylinder 3. As the solution is continuously injected, the liquid level in the outer cylinder 2 will reach a certain height, thus completing the pre-injection of the solution. Subsequently, the water pump connected to the drainage pipe will start. Driven by the water pump, the solution that has completed two stages of filtration in the outer space of the inner cylinder 3 will pass through the grid holes 421 into the inner cavity of the square cylinder 42, and further enter the annular pipe 141 through the branch pipe 142, and finally be discharged from the water pump. The solution discharged by the water pump has completed two stages of filtration. In order to ensure filtration... The solution can be further refined through a membrane filtration device to meet filtration requirements. With the continuous injection of solution and the continuous extraction of solution from the periphery of the inner cylinder 3, the solution in the inner cylinder 3 will actively pass through the primary filter 64 and the secondary filter 65 in sequence under this driving force. In this invention, the uniform alternating distribution of the diversion cylinder 4 and the filter cylinder 5 ensures that each filter cylinder 5 is located between two diversion cylinders 4. The grid holes 421 are vertically distributed on the square cylinder 42, providing a wrapping and uniformly dispersed diversion driving force for each filter cylinder 5. This can improve the filtration penetration rate of the solution on the entire mesh surface of both the primary filter 64 and the secondary filter 65, ensuring the overall utilization rate of the filter screen. The uniformly dispersed diversion setting enhances the efficiency of solution filtration.

[0047] Each filter cartridge 5 employs a two-stage filtration setup with a primary filter screen 64 and a secondary filter screen 65, forming a cascade filtration system. This improves upon the issues of low filtration accuracy, high filtration resistance, and poor performance associated with single-layer filter structures. Furthermore, the circumferential arrangement of multiple filter cartridges 5, along with the near-square cylindrical design of the filter cartridges 5 themselves, significantly increases the filtration area comprised of the primary filter screen 64 and the secondary filter screen 65, thereby reducing the relative resistance during filtration.

[0048] The outer cylinder 2 has a notch at the top, and an extension chamber 21 is welded to the outer wall of the outer cylinder 2 at the notch. The extension chamber 21 is equipped with an excitation assembly 8 that cooperates with each filter cartridge 5. The excitation assembly 8 includes an ultrasonic motor 81 that is fixed to the outer wall of the extension chamber 21 by bolts and an excitation block 82 that is welded to the output shaft of the ultrasonic motor 81. The excitation block 82 is horizontally slidably installed in the chamber of the extension chamber 21 along the axial direction of the outer cylinder 2, and the excitation block 82 makes vibration contact with the ball bearing 712. The ultrasonic motor 81 is an existing motor whose output shaft can perform micro-distance reciprocating linear motion and indirectly generate high-frequency vibration. Subsequently, the ultrasonic motor 81 can drive the exciter block 82 to perform high-frequency reciprocating sliding. The contact surface between the exciter block 82 and the ball 712 is an arc surface with the same curvature as the inner wall of the outer cylinder 2. In this invention, when the exciter block 82 slides to the position closest to the center of the outer cylinder 2, the output shaft of the ultrasonic motor 81 extends to the maximum extent. At this time, the arc surface of the exciter block 82 coincides with the inner wall of the outer cylinder 2.

[0049] In the actual filtration process, after the water pump starts, the turntable 12 starts intermittently, rotating intermittently and driving the filter cylinder 5 to rotate synchronously around the center of the turntable 12. After the intermittent rotation stops, one of the filter cylinders 5 is in a position opposite to the excitation assembly 8. After the ultrasonic motor 81 starts, it drives the excitation block 82 to perform high-frequency vibration in a reciprocating sliding manner. When the excitation block 82 slides away from the center of the outer cylinder 2, the connecting strip 73 and the contact point 741 are released from the squeezed state, forcing the front frame 71 to slide away from the center of the outer cylinder 2. Since the pin 722 slides along the guide groove 714, they restrain each other, causing the two side frames 72 to move away from each other. The gap between the outer clamping frame 7 and the inner frame 63 gradually increases. When the excitation block 82 slides closer to the center of the outer cylinder 2, the excitation block 82 contacts the ball bearing 712 and pushes the front frame 71 to slide in the opposite direction, synchronously driving the two side frames 72 to slide closer to each other. The gap between the outer clamping frame 7 and the inner frame 63 gradually decreases. During the high-frequency vibration process, the above process is repeated, causing the outer clamping frame 7 to vibrate the secondary filter screen 65 at high frequency through the evenly distributed contact points 741. During the vibration, the vibration can be transmitted on the filter cartridge body 6 and further generate a weaker vibration on the primary filter screen 64 compared to the secondary filter screen 65. Due to the high-frequency vibration perpendicular to the filter screen surface, the filter holes of the secondary filter screen 65 are smaller and more prone to clogging during filtration. The high-frequency vibration mainly cleans the secondary filter screen 65 and also assists in cleaning the primary filter screen 64. During the cleaning process, under the intermittent rotation of the turntable 12, the vibration assembly 8 cleans each filter cartridge 5 independently one by one, while the filter cartridge 5 in the non-cleaning state still maintains the filtration working state. In addition, the drainage tubes 4 on both sides of the filter cartridge 5 effectively isolate the filter cartridge 5 from the adjacent filter cartridge 5 through the built-in baffles 43, which greatly reduces the disturbance to the adjacent water area during the high-frequency vibration process and maintains the normal filtration state of the adjacent filter cartridge 5. It should be noted that during the vibration process, the connecting strip 73, through its own elasticity and in conjunction with the excitation component 8, achieves the vibration effect on the secondary filter 65. Although the ultrasonic motor 81 generates high-frequency vibration, the ultrasonic motor 81 starts intermittently and the continuous output time is short enough to achieve the vibration cleaning effect on the filter. Therefore, the fatigue cumulative damage to the connecting strip 73 is greatly reduced, and the connecting strip 73 can maintain long-term vibration response function without causing the elasticity of the connecting strip 73 to fail in a short period of time.

[0050] After the filter cartridge 5 undergoes a short period of rapid vibration cleaning by the excitation assembly 8, the solution returns to a relatively calm state. The impurities vibrated off the secondary filter screen 65 will settle on the inner end face of the bottom frame 62, while the impurities on the primary filter screen 64 will gradually settle on the surface of the positioning plate 121. After settling, the solenoid valve on the waste discharge pipe 15 installed on the corresponding filter cartridge 5 will open, allowing the impurities settled in the bottom frame 62 to be partially discharged through the waste discharge pipe 15 under the auxiliary drive of the drainage action. After a brief discharge, the solenoid valve will close. For the impurities settled in the inner cartridge 3, after the turntable 12 has rotated intermittently several times, the electric butterfly valve at the waste discharge hole 122 will open to discharge the impurities. This active waste discharge maintains the cleanliness of the device during the filtration process and prevents the impurities from being stirred up again during high-frequency vibration cleaning. Of course, after the batch filtration process is completed, the entire filtration device can also be actively cleaned periodically. It should be added here that during the active waste discharge process of filtration, the settled impurities will be discharged through the flow of the solution. Therefore, some polishing resin regenerator solution will be discharged. The discharged solution can be collected and injected back into the filtration device for filtration again to avoid waste.

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

[0052] In the description of this invention, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "connected," "installed," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art will understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0053] The preferred embodiments of the present invention have been described above. It should be understood that the present invention is not limited to the specific embodiments described above, and the devices and structures not described in detail should be understood as being implemented in a manner common to the art; any possible variations and modifications made by those skilled in the art without departing from the technical solution of the present invention, or equivalent embodiments with equivalent changes, do not affect the essential content of the present invention. Therefore, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention still fall within the protection scope of the technical solution of the present invention.

Claims

1. A filtration device for preparing a polishing resin regenerator, characterized in that, include: The base has a turntable mounted on its top that rotates around a vertical axis. The outer cylinder is fixed to the top of the base, and the turntable is coaxially located inside the outer cylinder; The inner cylinder is coaxially mounted inside the outer cylinder and can be detachably fixed to the turntable; Multiple drainage tubes are evenly distributed around the circumference and inserted into the outer wall of the inner tube; Multiple filter cartridges are distributed alternately with multiple drainage cartridges. The drainage cartridges draw liquid from the inner cartridge to the filter cartridge. Each filter cartridge includes a filter cartridge body and an outer clamping frame. The filter cartridge body includes an arc frame, a bottom frame, and an inner frame. The arc frame is inserted between adjacent drainage cartridges and fits against the outer wall of the inner cartridge. The bottom frame has a U-shaped structure and is fixed to the outer arc surface of the arc frame near the bottom end. The inner frame is fixed to the top of the bottom frame along its inner edge, and both ends of the inner frame are fixed to the outer arc surface of the arc frame. A primary filter screen is fixed on the arc frame, and a secondary filter screen with smaller pores than the primary filter screen is vertically inserted into the bottom frame. The outer clamping frame is movably assembled on the bottom frame and located outside the inner frame. The secondary filter screen is clamped between the inner frame and the outer clamping frame. The excitation assembly is mounted on the outer cylinder. When any filter cylinder rotates intermittently with the turntable until it comes into contact with the excitation assembly, the excitation assembly excites the outer clamping frame, indirectly causing the secondary filter screen to vibrate.

2. The filtration device for preparing polishing resin regenerator according to claim 1, characterized in that: The outer clamping frame includes a front frame and two side frames; the front frame is horizontally slidably mounted on the bottom frame at the side end opposite to the arc frame, and the two side frames are horizontally slidably mounted on the bottom frame at the other two side ends; flexible connecting strips are fixedly connected between the two side frames and the front frame, as well as between the two side frames and the arc frame; arc-shaped guide grooves are opened at both ends of the top of the front frame, and pins are vertically fixed at the top of the two side frames, the pins are inserted into the adjacent guide grooves, and the pins move along the guide grooves.

3. The filtration device for preparing polishing resin regenerator according to claim 2, characterized in that: An arc-shaped ear plate is fixed on the outer side wall of the front frame near the top. Multiple balls are movably embedded on the side wall of the ear plate and roll in contact with the inner wall of the outer cylinder. When the balls contact the inner wall of the outer cylinder, both the front frame and the side frame are clamped on the secondary filter screen.

4. The filtration device for preparing polishing resin regenerator according to claim 2, characterized in that: The front frame has multiple first frame strips distributed inside, and the side frame has multiple second frame strips distributed inside. Flexible actuation strips are fixed on both the first and second frame strips, and multiple flexible contact points are distributed along the length of the actuation strips. The contact points are in contact with the secondary filter.

5. The filtration device for preparing polishing resin regenerator according to claim 3, characterized in that: The outer cylinder has a notch at the top, and an extension chamber is fixed on the outer wall of the outer cylinder at the notch. The excitation assembly is assembled on the extension chamber. The excitation assembly includes an ultrasonic motor fixed on the outer wall of the extension chamber and an excitation block fixed on the output shaft of the ultrasonic motor. The excitation block is horizontally slidably installed in the extension chamber along the axial direction of the outer cylinder and makes contact with the ball bearings.

6. The filtration device for preparing polishing resin regenerator according to claim 1, characterized in that: The drainage tube includes a connector that is vertically inserted into the inner tube and a square tube fixed to the connector; the square tube has grid holes on the sides located on both radial sides of the inner tube, and a partition that separates the two sides where the grid holes are located is vertically inserted into the square tube; an arc frame is inserted between two adjacent connectors.

7. The filtration device for preparing polishing resin regenerator according to claim 5, characterized in that: The contact surface between the exciter and the ball is an arc surface with the same curvature as the inner wall of the outer cylinder. When the exciter slides to the position closest to the center of the outer cylinder, the arc surface of the exciter coincides with the inner wall of the outer cylinder.

8. The filtration device for preparing polishing resin regenerator according to claim 6, characterized in that: The bottom end of the cylinder frame is provided with a waste discharge connector that is inserted through the turntable; a waste discharge cylinder is coaxially fixed at the bottom end of the turntable, and multiple waste discharge pipes are mounted on the waste discharge cylinder, with one end connected to multiple waste discharge connectors, and the other end of the waste discharge pipes is inserted into the waste discharge cylinder; a waste discharge hole is opened on the turntable to connect the inner cylinder and the waste discharge cylinder.

9. A filtration device for preparing a polishing resin regenerator according to claim 8, characterized in that: The bottom end of the square cylinder is provided with a drain connector that is inserted through the turntable, and the bottom end of the partition is provided with a notch that avoids the inner port of the drain connector; the waste discharge cylinder is equipped with a drain pipe assembly, which includes a circular pipe fixed on the outer wall of the waste discharge cylinder, and the circular pipe is provided with multiple branch pipes that correspond one-to-one with multiple drain connectors.

10. A filtration device for preparing a polishing resin regenerator according to claim 1, characterized in that: The top of the built-in cylinder is detachably fixed with a crimping cylinder, and the diversion cylinder and the filter cylinder are clamped between the crimping cylinder and the turntable.

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