A high flux micro-porous filter

Abstract

The application discloses a high-flux microporous filter and belongs to the filter field.The high-flux microporous filter comprises a shell, a liquid inlet and a liquid outlet are arranged on the top wall and the bottom wall of the shell respectively, a shunt pipe and a filter core are fixedly installed in the inner cavity of the shell, the shunt pipe and the filter core are both tubular structures with an open top end and a closed bottom end, the top end opening of the shunt pipe is in communication with the liquid inlet, and the scheme utilizes the kinetic energy of the filtered fluid to impact and drive the wing plate. min When the fluid impact moment M drive of the driving wing plate is greater than the total system static friction resistance moment M f of the ball screw pair, the guide rod and the guide hole and the magnetic coupling assembly, the mechanism can be started. By matching the inclination angle θ of the driving wing plate and the water area S, the kinetic energy of the fluid is converted into mechanical power to overcome the resistance moment; meanwhile, the external circular ring sleeve is driven to perform up-down linear reciprocating motion through the reciprocating screw rod, and the local flow field distribution of the fluid penetrating the filter core is dynamically changed.

Description

Technical Field

[0001] This invention relates to the field of filters, and more specifically, to a high-flux microporous filter. Background Technology

[0002] Microfiltration filters are widely used in water treatment, chemical, food, and pharmaceutical industries. However, when filtering high-turbidity fluids, the filter element is prone to micropore clogging, leading to a decrease in filtration flux. Existing filters typically employ timed global backwashing or backwashing technology based on overall pressure differential. Considering the structure of existing filters, these methods mainly have the following drawbacks:

[0003] Microfiltration filters are widely used in water treatment, chemical industry, and other fields. However, when filtering high-turbidity fluids, existing filters typically have fixed inlet and outlet channels and a static internal structure, resulting in a constant and rigid flow field distribution within the chamber. In this case, impurities in the fluid preferentially and continuously concentrate on impacting and penetrating a specific part of the filter element, causing premature and rapid high-load clogging in that localized area. Once local micropores are clogged, the fluid is forced to migrate to the surrounding areas, causing the clogging to spread and resulting in a rapid decrease in overall filtration flux. Conventional backwashing techniques are unlikely to fundamentally clean this type of stubborn, high-load clogging.

[0004] To address this, a high-throughput microporous filter is proposed. Summary of the Invention

[0005] To address the problems existing in the prior art, the purpose of this invention is to provide a high-throughput microporous filter that can reduce the degree of filter element clogging by changing the position of the annular sleeve.

[0006] To solve the above problems, the present invention adopts the following technical solution.

[0007] A high-flux microporous filter, comprising a housing;

[0008] The top and bottom walls of the shell are respectively provided with liquid inlet and liquid outlet;

[0009] A diversion pipe and a filter element are fixedly installed in the inner cavity of the shell. Both the diversion pipe and the filter element are tubular structures with an open top and a closed bottom.

[0010] The top opening of the diverter tube is connected to the inlet, and the side wall of the diverter tube has multiple diverting holes that penetrate the tube wall.

[0011] The filter element is fitted onto the outside of the distribution pipe;

[0012] A circular sleeve is slidably installed axially inside the housing. The circular sleeve is fitted over the outside of the filter element, and a through hole is provided on the side wall of the circular sleeve.

[0013] The top and bottom ends of the annular sleeve are respectively sealed with an upper bellows and a lower bellows. The end of the upper bellows away from the annular sleeve is fixed and sealed to the inner top wall of the shell, and the end of the lower bellows away from the annular sleeve is fixed and sealed to the inner bottom wall of the shell.

[0014] The housing is equipped with a drive mechanism for moving the circular sleeve up and down;

[0015] The drive mechanism includes a reciprocating screw that is vertically and rotatably mounted on the top wall of the housing, and an outlet that is eccentrically located on the bottom wall of the housing; the axis of the reciprocating screw coincides with the axis of the outlet and is eccentrically located outside the filter element, and the bottom end of the reciprocating screw extends into the outlet.

[0016] A first slider is sleeved on the reciprocating lead screw. The first slider is driven by the reciprocating lead screw and is fixedly connected to the outer wall of the annular sleeve.

[0017] Furthermore, the ratio of the filter element's inner diameter to the distributor's outer diameter is 1.5 to 1.8;

[0018] The ratio of the inner diameter of the annular sleeve to the outer diameter of the filter element is 1.8 to 2.0.

[0019] Furthermore, the drive assembly includes multiple drive vanes fixedly installed on the side wall of the reciprocating screw. The multiple drive vanes are evenly distributed in a ring array on the outer periphery of the reciprocating screw, and the surface of the drive vanes is inclined relative to the axis of the reciprocating screw, and the drive vanes are located in the liquid outlet.

[0020] A guide rod is vertically fixed between the top wall and the bottom wall of the shell. A guide hole is provided on the annular sleeve to slide with the guide rod, and the guide rod is inserted into the guide hole.

[0021] Furthermore, the outer sliding sleeve of the diverter is provided with an annular sleeve;

[0022] Flexible bristles are evenly distributed on the outer wall of the annular sleeve, and the end of the flexible bristles away from the annular sleeve abuts against the inner wall of the filter element.

[0023] The housing is equipped with a linkage mechanism for driving the ring sleeve to move synchronously with the circular ring sleeve.

[0024] Furthermore, a dovetail groove is provided axially on the outer wall of the diverter, and a second slider is slidably installed in the dovetail groove, with the side wall of the second slider slidingly fitting against the side wall of the dovetail groove.

[0025] The linkage mechanism includes a driven magnet disposed between the second slider and the inner wall of the annular sleeve;

[0026] An active magnet corresponding to the position of the driven magnet is fixedly installed on the inner wall of the ring sleeve;

[0027] The active magnet and the driven magnet attract each other and form a magnetic coupling.

[0028] Furthermore, an installation groove facing the second slider is provided on the inner side wall of the annular sleeve, and an elastic pad is fixedly installed on the inner end wall of the installation groove.

[0029] One end of the driven magnet is fixedly connected to the side wall of the second slider, and the other end is inserted into the mounting groove and fixedly connected to the elastic pad;

[0030] The ratio of the inner diameter of the mounting slot to the outer diameter of the driven magnet end face is 1.3 to 1.5;

[0031] The ratio of the free length of the flexible bristles to the radial distance between the inner wall of the filter element and the outer wall of the annular sleeve is 1.3 to 1.5.

[0032] Furthermore, an adaptive pressure relief hole is provided through the surface of the drive wing plate, and an elastic diaphragm is fixedly installed inside the adaptive pressure relief hole. The central area of ​​the elastic diaphragm has a pre-set straight cut in a normally closed state.

[0033] Furthermore, multiple transmission blocks are fixedly installed on the outer wall of the filter element at axial intervals. The transmission blocks are frustum-shaped structures with an outer diameter that gradually decreases from the filter element outward.

[0034] A push rod is fixedly installed at the end of the active magnet facing the filter element, which slides against the side wall of the transmission block.

[0035] Furthermore, a guide hole is radially formed on the inner wall of the ring sleeve, the active magnet is slidably inserted in the guide hole, and a return spring is fixedly connected between the active magnet and the bottom of the guide hole.

[0036] Furthermore, a drain pipe is vertically fixed through the bottom wall of the housing, with the top end of the drain pipe extending upwards through the bottom wall of the filter element, and the top end of the drain pipe being flush with the inner bottom surface of the filter element; a drain valve is fixedly installed at the bottom end of the drain pipe.

[0037] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0038] (1) This scheme utilizes the kinetic energy of the filtered fluid discharge to impact and drive the wing plate. To ensure stable start-up of the self-driving mechanism, the minimum working pressure difference P of the fluid is limited. min When the driving wing experiences a fluid impact torque M drive The static frictional resistance torque M of the entire system, including the ball screw assembly, guide rod and guide hole, and magnetic coupling assembly, is greater than the total static frictional resistance torque M of the entire system. fThe mechanism can only be activated when the angle θ of the drive vane is matched with the water-facing area S, the fluid kinetic energy is converted into mechanical power to overcome the resistance torque; at the same time, the reciprocating screw drives the outer ring sleeve to perform up-and-down linear reciprocating motion, dynamically changing the local flow field distribution when the fluid penetrates the filter element, so that the impact points of the fluid on the filter element are constantly alternating, avoiding rapid clogging of micropores in specific filtration areas due to long-term high-load scouring, and extending the service life of the filter element.

[0039] (2) This solution uses an active magnet and a driven magnet between the circular sleeve and the annular sleeve to penetrate the filter element wall by using magnetic coupling, so as to realize the power transmission of the internal cleaning mechanism without damaging the sealing of the shell. When the circular sleeve moves up and down, the magnetic force pulls the annular sleeve with flexible bristles inside to perform a stable reciprocating motion along the dovetail groove of the diversion pipe, so as to perform real-time and comprehensive dynamic brushing of the inner wall of the filter element, preventing the adhesion and scaling of high turbidity impurities on the inner wall of the filter element, and ensuring the long-term stable flow of the filter.

[0040] (3) This solution utilizes the cooperation between the frustum-shaped transmission block on the outer wall of the filter element and the push rod at the end of the active magnet. During the up and down strokes of the annular sleeve, the active magnet is forced to continuously overcome the return spring and generate radial displacement fluctuations. The push rod slides over the transmission block, forcing the active magnet to generate radial displacement, which in turn causes periodic changes in the magnetic force intensity on the driven magnet. The inner annular sleeve is pulled by this changing magnetic force to generate radial vibration, which, together with the flexible bristles, continuously scrapes and cleans the inner wall of the filter element. Attached Figure Description

[0041] Figure 1 This is a cross-sectional view of the housing of the present invention;

[0042] Figure 2 For the present invention Figure 1 Enlarged structural diagram at point A;

[0043] Figure 3 This is a schematic diagram of the combined structure of the diversion pipe, dovetail groove, and diversion hole of the present invention;

[0044] Figure 4 This is a schematic diagram of the combined structure of the reciprocating lead screw and the drive vane of the present invention;

[0045] Figure 5 This is a cross-sectional structural schematic diagram of the drive wing plate of the present invention;

[0046] Figure 6 This is a schematic diagram of the structure of the present invention with the straight cut open.

[0047] Figure 7 This is a schematic diagram of the front structure of the elastic diaphragm of the present invention.

[0048] Explanation of the labels in the diagram:

[0049] 1. Housing; 101. Inlet; 102. Outlet; 2. Diverter pipe; 201. Diverter hole; 202. Dovetail groove; 3. Filter element; 4. Circular sleeve; 401. Through hole; 5. Upper bellows; 6. Lower bellows; 7. Reciprocating screw; 8. First slider; 9. Drive wing plate; 901. Adaptive pressure relief hole; 10. Guide rod; 11. Circular sleeve; 1101. Mounting groove; 12. Flexible bristles; 13. Second slider; 14. Driven magnet; 15. Active magnet; 16. Elastic pad; 17. Elastic diaphragm; 18. Straight cut; 19. Transmission block; 20. Push rod; 21. Return spring; 22. Drain pipe; 23. Drain valve. Detailed Implementation

[0050] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0051] Example 1:

[0052] Please see Figures 1 to 7 A high-flux microporous filter includes a housing 1;

[0053] The top and bottom walls of the housing 1 are respectively provided with a liquid inlet 101 and a liquid outlet 102;

[0054] A diversion pipe 2 and a filter element 3 are fixedly installed in the inner cavity of the housing 1. Both the diversion pipe 2 and the filter element 3 are tubular structures with open tops and closed bottoms.

[0055] The top opening of the diversion tube 2 is connected to the liquid inlet 101, and multiple diversion holes 201 penetrating the tube wall are provided on the side wall of the diversion tube 2; the impurity-containing fluid injected into the diversion tube 2 is diverted through the diversion holes 201 so that it is in uniform contact with the inner wall of the filter element 3.

[0056] Filter element 3 is fitted onto the outside of the diversion pipe 2;

[0057] A circular ring sleeve 4 is slidably installed inside the housing 1 along the axial direction. The circular ring sleeve 4 is sleeved on the outside of the filter element 3, and a through hole 401 is opened on the side wall of the circular ring sleeve 4.

[0058] The top and bottom ends of the annular sleeve 4 are respectively sealed with an upper bellows 5 and a lower bellows 6. The end of the upper bellows 5 away from the annular sleeve 4 is fixed and sealed to the inner top wall of the housing 1, and the end of the lower bellows 6 away from the annular sleeve 4 is fixed and sealed to the inner bottom wall of the housing 1.

[0059] The housing 1 is provided with a drive mechanism for driving the ring sleeve 4 to move up and down;

[0060] The drive mechanism includes a reciprocating screw 7 that is vertically and rotatably mounted on the top wall of the housing 1, and an outlet 102 that is eccentrically opened on the bottom wall of the housing 1; the axis of the reciprocating screw 7 coincides with the axis of the outlet 102 and is eccentrically located outside the filter element 3, and the bottom end of the reciprocating screw 7 extends into the outlet 102.

[0061] A first slider 8 is fitted onto the reciprocating screw 7, and the first slider 8 is driven by the reciprocating screw 7. The first slider 8 is fixedly connected to the outer wall of the annular sleeve 4. In order to reduce the transmission resistance and ensure that the fluid kinetic energy can drive the mechanism to run, a ball screw pair is preferably used between the reciprocating screw 7 and the first slider 8. The surfaces of the annular sleeve 4 and the outer wall of the filter element 3 that slide relative to each other are coated with a low friction resistance coating such as polytetrafluoroethylene. The part of the reciprocating screw 7 located inside the liquid outlet 102 is connected to a drive component that rotates under the impact of the fluid. The drive component uses the kinetic energy of the outflowing fluid to drive the reciprocating screw 7 to rotate, so as to dynamically change the local scouring flow field of the fluid on the filter element through the reciprocating motion of the annular sleeve, thereby achieving anti-clogging.

[0062] The transmission cooperation between the reciprocating lead screw 7 and the first slider 8 is existing technology and will not be described in detail here.

[0063] The ratio of the inner diameter of filter element 3 to the outer diameter of distribution pipe 2 is 1.5 to 1.8, creating a gap between the inner wall of filter element 3 and the outer wall of distribution pipe 2 for the flow of the fluid to be filtered. This gap ratio ensures the radial dynamic pressure P generated by the fluid to be filtered after entering distribution pipe 2. d Uniform distribution avoids scouring damage to the inner wall of filter element 3 caused by excessively high local flow rates;

[0064] The ratio of the inner diameter of the ring sleeve 4 to the outer diameter of the filter element 3 is 1.8 to 2.0, which creates a gap between the inner wall of the ring sleeve 4 and the outer wall of the filter element 3 for the flow of filtered fluid. This ensures that when the filtered fluid expands and contracts in the upper corrugated pipe 5 and the lower corrugated pipe 6, causing local space compression, the pressure fluctuation difference ΔP on the outlet side is limited to a safe range, preventing reverse rupture of the filter element.

[0065] The drive assembly includes multiple drive vanes 9 fixedly mounted on the side wall of the reciprocating screw 7. The multiple drive vanes 9 are evenly distributed in a ring array on the outer periphery of the reciprocating screw 7, and the surface of the drive vanes 9 is inclined relative to the axis of the reciprocating screw 7. The drive vanes 9 are located in the liquid outlet 102. When the filtered fluid flows out, the inclined drive vanes 9 are impacted by the kinetic energy of the fluid and generate a deflection force, thereby driving the reciprocating screw 7 to rotate. A guide rod 10 is vertically fixedly mounted between the inner top wall and the inner bottom wall of the housing 1. A guide hole is opened on the annular sleeve 4 to slide with the guide rod 10. The guide rod 10 is inserted into the guide hole, restricting the circumferential rotation of the annular sleeve 4 and forcing it to move only in a straight line up and down.

[0066] At the start of the filtration process, the impurity-laden fluid is injected into the diversion pipe 2 through the inlet 101. Since the ratio of the inner diameter of the filter element 3 to the outer diameter of the diversion pipe 2 is set between 1.5 and 1.8, a gap is formed between them for the fluid to be filtered to flow. The fluid is evenly distributed through multiple diversion holes 201 on the side wall of the diversion pipe 2, thereby enabling it to contact the inner wall of the filter element 3 evenly and avoiding local overload caused by concentrated fluid impact from the source.

[0067] The filtered clean fluid enters the gap between the filter element 3 and the annular sleeve 4, with an inner-outer diameter ratio of 1.8 to 2.0, ensuring sufficient flow space.

[0068] When the filtered fluid flows out of the outlet 102, it impacts the inclined drive vane 9 downwards. The impact force of the fluid is thus decomposed into vertical and horizontal components, which are converted into driving force, causing the drive vane 9 to rotate the reciprocating screw 7. In this process, the kinetic energy of the fluid itself at the outlet is converted into mechanical power, realizing self-drive without the need for an external power source.

[0069] As the reciprocating screw 7 continues to rotate, the first slider 8 on it is driven, which in turn drives the annular sleeve 4 to move within the housing 1. With the guide rod 10 inserted into the guide hole, the circumferential rotation of the annular sleeve 4 is strictly limited, forcing it to only perform vertical reciprocating motion. At the same time, the upper bellows 5 and lower bellows 6 extend and retract, and the continuous up-and-down sliding of the annular sleeve 4 and the side wall through hole 401 outside the filter element 3 dynamically changes the local flow field distribution when the fluid penetrates the filter element 3, thereby playing a guiding role. This ensures that the filtration impact points of the fluid on the filter element 3 are constantly alternating, reducing the time that the fluid continuously impacts a certain part of the filter element 3. By avoiding a specific filtration area from being subjected to high-load fluid scouring and impurity accumulation for a long time, it prevents the rapid clogging and failure propagation of local micropores, while reducing the risk of physical fatigue of the local structure of the filter element 3, ensuring the long-term flow stability and ultra-long service life of the filter; and in the subsequent backwashing process, it plays a role in improving the cleaning effect.

[0070] like Figure 1 , Figure 2 , Figure 3 As shown, the outer sliding sleeve of the diversion pipe 2 is provided with an annular sleeve 11;

[0071] In order to clean the inner surface of the filter element 3, flexible bristles 12 are evenly distributed on the outer wall of the annular sleeve 11, and the end of the flexible bristles 12 away from the annular sleeve 11 abuts against the inner wall of the filter element 3.

[0072] The housing 1 is equipped with a linkage mechanism for driving the annular sleeve 11 to move synchronously with the circular sleeve 4.

[0073] A dovetail groove 202 is provided axially on the outer side wall of the diversion pipe 2. A second slider 13 is slidably installed in the dovetail groove 202. The side wall of the second slider 13 is slidably attached to the side wall of the dovetail groove 202.

[0074] The linkage mechanism includes a driven magnet 14 disposed between the second slider 13 and the inner wall of the annular sleeve 11;

[0075] An active magnet 15, corresponding to the position of the driven magnet 14, is fixedly installed on the inner wall of the ring sleeve 4;

[0076] The active magnet 15 and the driven magnet 14 attract each other and form a magnetic coupling, so that the annular sleeve 11 slides synchronously with the circular sleeve 4. To ensure the transmission of magnetic coupling, the filter element 3 is made of non-ferromagnetic material, such as 304 stainless steel, engineering plastic or ceramic material, and the wall thickness of the filter element 3 must be less than the critical distance for effective magnetic coupling between the active magnet 15 and the driven magnet 14.

[0077] In actual operation, when the filtered fluid flows out, it impacts the drive vane 9 at the bottom, which in turn drives the outer annular sleeve 4 to perform a linear reciprocating motion up and down via the reciprocating screw 7. At this time, the active magnet 15 fixed on the inner wall of the annular sleeve 4 moves accordingly, and through magnetic coupling, it penetrates the filter element 3, pulling the driven magnet 14 on the inner annular sleeve 11 to follow it in synchronous motion.

[0078] During the process of the inner annular sleeve 11 being pulled up and down, the second slider 13 slides along the dovetail groove 202 on the outer wall of the diversion pipe 2, providing axial guidance and preventing the annular sleeve 11 from deflecting or getting stuck when pulled unidirectionally by magnetic force, thus ensuring the stability of the overall movement.

[0079] At the same time, the flexible bristles 12 on the outside of the annular sleeve 11 continuously and thoroughly brush the inner wall of the filter element 3, achieving real-time dynamic cleaning of the inner wall of the filter element 3, preventing the adhesion and local blockage of high turbidity impurities on the inner wall of the filter element 3, extending the operating cycle of the filter and maintaining a stable high throughput.

[0080] like Figure 2 As shown, an installation groove 1101 facing the second slider 13 is provided on the inner side wall of the annular sleeve 11, and an elastic pad 16 is fixedly installed on the inner end wall of the installation groove 1101.

[0081] One end of the driven magnet 14 is fixedly connected to the side wall of the second slider 13, and the other end is inserted into the mounting groove 1101 and fixedly connected to the elastic pad 16.

[0082] The ratio of the inner diameter of the mounting groove 1101 to the outer diameter of the end face of the driven magnet 14 is 1.3 to 1.5, so as to form a clearance between the two.

[0083] The ratio of the free length of the flexible bristles 12 to the radial distance between the inner wall of the filter element 3 and the outer wall of the annular sleeve 11 is 1.3 to 1.5, so that the end of the flexible bristles 12 away from the annular sleeve 11 is elastically bent and always maintains interference contact with the inner wall of the filter element 3 during high-frequency micro-vibration.

[0084] When the active magnet 15 pulls the driven magnet 14 up and down, the dynamic balance between the fluid resistance fluctuations and magnetic traction on the annular sleeve 11 forces the elastic pad 16 to undergo intermittent compression and recovery alternating deformation in the clearance gap within the mounting groove 1101. This causes the annular sleeve 11 to vibrate while moving axially. This vibration is transmitted to the flexible bristles 12, and within the deformation margin of the interference fit, it enhances the peeling effect on the stubborn deposits on the inner wall of the filter element 3 with a composite motion.

[0085] like Figure 4 , Figure 5 , Figure 6 As shown, an adaptive pressure relief hole 901 is provided through the surface of the drive vane 9. An elastic diaphragm 17 is fixedly installed inside the adaptive pressure relief hole 901. The central area of ​​the elastic diaphragm 17 has a pre-set straight cut 18 that is normally closed. When the flow rate is low, the fluid impact force on the drive vane 9 is small. The straight cut 18 is kept closed by the elasticity of the material, ensuring sufficient driving torque at low flow rates. Under extremely high flow conditions, the elastic diaphragm 17 is compressed and deformed. The straight cut 18 expands to both sides under tension, forming a lip-shaped pressure relief channel, diverting part of the impact fluid, preventing the reciprocating screw 7 from overspeeding and causing magnetic loss of synchronization, and avoiding cut tearing failure due to stress concentration.

[0086] like Figure 1 , Figure 2 As shown, multiple transmission blocks 19 are fixedly installed on the outer wall of the filter element 3 at intervals along the axial direction. The transmission block 19 is a frustum-shaped structure with an outer diameter that gradually decreases from the filter element 3 outwards.

[0087] A push rod 20 is fixedly installed at one end of the active magnet 15 facing the filter element 3, which slides against the side wall of the transmission block 19;

[0088] As the ring sleeve 4 moves up and down, the push rod 20 moves along the frustum-shaped inclined surface of the transmission block 19. By utilizing the cam-shaped conformal cooperation between the two, the active magnet 15 is forced to generate radial displacement fluctuations.

[0089] like Figure 2 As shown, a guide hole is radially opened on the inner side wall of the ring sleeve 4, the active magnet 15 is slidably inserted in the guide hole, and a return spring 21 is fixedly connected between the active magnet 15 and the bottom of the guide hole.

[0090] In actual operation, when the ring sleeve 4 moves up and down linearly along the outside of the filter element 3 under the drive of the drive mechanism, the active magnet 15 installed in the guide sliding hole of the ring sleeve 4 and the push rod 20 at its end will also move up and down synchronously.

[0091] At this time, the push rod 20 will continuously cross multiple transmission blocks 19 fixed on the outer wall of the filter element 3. Since the transmission block 19 adopts a frustum-shaped structure with the outer radial direction gradually decreasing, its surface forms a smooth guide slope. When the push rod 20 slides over the slope surface, the push rod 20 will be pushed outward radially, overcoming the elastic force of the return spring 21, and driving the active magnet 15 to retract outward in the guide slide hole. The outermost edge of the transmission block 19 and the two side slopes are provided with a smooth transition arc surface to eliminate the boundary points on the movement trajectory. When the push rod 20 passes the outermost edge of the transmission block 19 through the arc surface, it will smoothly return to the inward under the action of the return spring 21, and the active magnet 15 will quickly return to the inward, avoiding mechanical jamming and self-locking hard impact caused by fluid fluctuations.

[0092] As the annular sleeve 4 continuously moves up and down, the active magnet 15 is repeatedly pushed up and bounced back within the guide hole, causing a periodic change in the physical distance between the active magnet 15 and the driven magnet 14 inside the filter element 3. This, in turn, generates a high-frequency vibration "magnetic pulsation effect" in the magnetic field penetrating the filter element 3 wall. During the macroscopic up-and-down sliding process under magnetic traction, the inner annular sleeve 11 absorbs this magnetic pulsation, forcing the annular sleeve 11 and the flexible bristles 12 on its outer side to vibrate mechanically.

[0093] At this time, not only is the adhesion balance of high-viscosity impurities on the surface of the micropores of filter element 3 broken, but the vibration also loosens, breaks, and peels off the stubborn scale structure. At the same time, the high-frequency vibration causes the bristles to be in a state of frequent impact with the inner wall of filter element 3, reducing the pure mechanical friction resistance during the brushing process and protecting the micropores of filter element 3 from hard scratch damage, thereby ensuring the stable flow rate of the filter over a long period of time when treating high turbidity fluids.

[0094] like Figure 1As shown, a drain pipe 22 is vertically fixed through the bottom wall of the housing 1. The top end of the drain pipe 22 extends upward through the bottom wall of the filter element 3, and the top end of the drain pipe 22 is flush with the inner bottom surface of the filter element 3 to eliminate dead corners at the bottom. A drain valve 23 is fixedly installed at the bottom end of the drain pipe 22. When cleaning the filter element 3, clean fluid can be introduced through the backwash flow path or directly through the liquid inlet 101 to perform hydraulic flushing on the inner wall of the filter element 3. Then, the drain valve 23 is opened, and the impurities that were previously peeled off by the flexible bristles 12 and settled at the bottom of the filter element 3 are smoothly discharged to the outside of the housing 1 using the fluid pressure inside the equipment, thus completing the cleaning and draining.

[0095] The above description is merely a preferred embodiment of the present invention; however, the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and its improved concepts, should be covered within the scope of protection of the present invention.

Claims

1. A high-flux microporous filter, comprising a housing (1); Its features are: The top and bottom walls of the shell (1) are respectively provided with a liquid inlet (101) and a liquid outlet (102). The inner cavity of the housing (1) is fixedly installed with a diversion pipe (2) and a filter element (3). Both the diversion pipe (2) and the filter element (3) are tubular structures with open tops and closed bottoms. The top opening of the diversion pipe (2) is connected to the liquid inlet (101), and the side wall of the diversion pipe (2) is provided with a plurality of diversion holes (201) that penetrate the pipe wall. The filter element (3) is sleeved on the outside of the diversion pipe (2); A circular sleeve (4) is slidably installed in the housing (1) along the axial direction. The circular sleeve (4) is sleeved on the outside of the filter element (3), and a through hole (401) is opened on the side wall of the circular sleeve (4). The top and bottom ends of the ring sleeve (4) are respectively sealed with an upper corrugated pipe (5) and a lower corrugated pipe (6). The end of the upper corrugated pipe (5) away from the ring sleeve (4) is fixed and sealed to the inner top wall of the shell (1), and the end of the lower corrugated pipe (6) away from the ring sleeve (4) is fixed and sealed to the inner bottom wall of the shell (1). The housing (1) is provided with a driving mechanism for driving the ring sleeve (4) to move up and down; The drive mechanism includes a reciprocating screw (7) that is vertically and rotatably mounted on the top wall of the housing (1); the liquid outlet (102) is eccentrically opened on the bottom wall of the housing (1); and the axis of the reciprocating screw (7) coincides with the axis of the liquid outlet (102) and is eccentrically located outside the filter element (3); The bottom end of the reciprocating screw (7) extends into the liquid outlet (102); a first slider (8) is sleeved on the reciprocating screw (7), the first slider (8) is driven by the reciprocating screw (7), and the first slider (8) is fixedly connected to the outer wall of the ring sleeve (4); the part of the reciprocating screw (7) located inside the liquid outlet (102) is connected to a drive component that rotates under the impact of fluid.

2. The high-flux microporous filter according to claim 1, characterized in that: The ratio of the inner diameter of the filter element (3) to the outer diameter of the diversion pipe (2) is 1.5 to 1.8; The ratio of the inner diameter of the ring sleeve (4) to the outer diameter of the filter element (3) is 1.8 to 2.

0.

3. A high-flux microporous filter according to claim 2, characterized in that: The drive assembly uses the kinetic energy of the outflowing fluid to drive the reciprocating screw (7) to rotate, so as to dynamically change the local scouring flow field of the fluid on the filter element (3) through the reciprocating motion of the annular sleeve (4). The drive assembly includes multiple drive wing plates (9) fixedly installed on the side wall of the reciprocating screw (7). The multiple drive wing plates (9) are evenly distributed in a ring array on the outer periphery of the reciprocating screw (7). The plate surface of the drive wing plate (9) is inclined relative to the axis of the reciprocating screw (7). The drive wing plate (9) is located in the liquid outlet (102). A guide rod (10) is vertically fixed between the inner top wall and the inner bottom wall of the housing (1). A guide hole is provided on the annular sleeve (4) to slide with the guide rod (10), and the guide rod (10) is inserted into the guide hole.

4. A high-flux microporous filter according to claim 3, characterized in that: The outer sliding sleeve of the diverter (2) is provided with an annular sleeve (11). Flexible bristles (12) are evenly distributed on the outer wall of the annular sleeve (11), and the end of the flexible bristles (12) away from the annular sleeve (11) abuts against the inner wall of the filter element (3). The housing (1) is provided with a linkage mechanism for driving the annular sleeve (11) to move synchronously with the circular sleeve (4).

5. A high-flux microporous filter according to claim 4, characterized in that: A dovetail groove (202) is provided on the outer side wall of the diversion pipe (2) along the axial direction. A second slider (13) is slidably installed in the dovetail groove (202). The side wall of the second slider (13) is slidably attached to the side wall of the dovetail groove (202). The linkage mechanism includes a driven magnet (14) disposed between the second slider (13) and the inner wall of the annular sleeve (11). An active magnet (15) corresponding to the position of the driven magnet (14) is fixedly installed on the inner wall of the ring sleeve (4). The active magnet (15) and the driven magnet (14) attract each other and form a magnetic coupling.

6. A high-flux microporous filter according to claim 5, characterized in that: An installation groove (1101) facing the second slider (13) is provided on the inner side wall of the annular sleeve (11), and an elastic pad (16) is fixedly installed on the inner end wall of the installation groove (1101). One end of the driven magnet (14) is fixedly connected to the side wall of the second slider (13), and the other end is inserted into the mounting groove (1101) and fixedly connected to the elastic pad (16); The ratio of the inner diameter of the mounting groove (1101) to the outer diameter of the end face of the driven magnet (14) is 1.3 to 1.5; The ratio of the free length of the flexible bristles (12) to the radial distance between the inner wall of the filter element (3) and the outer wall of the annular sleeve (11) is 1.3 to 1.

5.

7. A high-flux microporous filter according to claim 6, characterized in that: The surface of the drive wing plate (9) is provided with an adaptive pressure relief hole (901), and an elastic diaphragm (17) is fixedly installed inside the adaptive pressure relief hole (901). The central area of ​​the elastic diaphragm (17) has a straight cut (18) that is normally closed.

8. A high-flux microporous filter according to claim 7, characterized in that: Multiple transmission blocks (19) are fixedly installed on the outer wall of the filter element (3) at intervals along the axial direction. The transmission blocks (19) are frustum-shaped structures with an outer diameter that gradually decreases from the filter element (3) outward. The active magnet (15) is fixedly mounted with a push rod (20) that slides against the side wall of the transmission block (19) at one end facing the filter element (3).

9. A high-flux microporous filter according to claim 8, characterized in that: The inner wall of the ring sleeve (4) is provided with a guide sliding hole along the radial direction. The active magnet (15) is slidably inserted in the guide sliding hole, and a reset spring (21) is fixedly connected between the active magnet (15) and the bottom of the guide sliding hole.

10. A high-flux microporous filter according to claim 1, characterized in that: A drain pipe (22) is vertically fixed through the bottom wall of the housing (1). The top end of the drain pipe (22) extends upward through the bottom wall of the filter element (3), and the top end of the drain pipe (22) is flush with the inner bottom surface of the filter element (3). A drain valve (23) is fixedly installed at the bottom end of the drain pipe (22).

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