A filtering device with a polymer sintered microporous filter element

Abstract

The present invention discloses a filtering device with a polymer sintered microporous filter element, which relates to the technical field of solid-liquid separation, and comprises an outer shell, wherein a water inlet pipe and a water outlet pipe are fixedly installed on the top and bottom of the outer shell respectively, a separation cylinder is fixedly connected to the interior of the outer shell, and a polymer sintered filter element is arranged inside the separation cylinder, and also comprises a driving mechanism, wherein the driving mechanism comprises a motor fixedly installed inside the outer shell, a turntable is fixedly connected to the driving shaft of the motor, and a connecting piece is rotatably connected inside the outer shell, and a periodic pressurizing component is provided to periodically pressurize the interior of the separation cylinder after the polymer sintered filter element is blocked to a certain extent, so that the water flow is more evenly distributed in various parts of the polymer sintered filter element, thereby increasing the water flow impact on the seriously blocked area on the polymer sintered filter element, breaking the blockage balance of the polymer sintered filter element, thereby restoring a part of the filtering channel of the polymer sintered filter element, and extending the service life of the polymer sintered filter element.

Description

Technical Field

[0001] The invention relates to the technical field of solid-liquid separation, and in particular to a filtering device with a polymer sintered microporous filter element. Background Art

[0002] The polymer sintered microporous filter element is a filter element made of polymer materials (such as ultra-high molecular weight polyethylene, etc.) as the main raw material through a special sintering process. The filter element has a large number of tiny interconnected pores inside, and complex microporous channels are formed between the pores, which can effectively intercept tiny particles, impurities and suspended matter in liquids or gases. In addition, due to the sintering process, the polymer material undergoes physical and chemical changes at high temperatures, which makes the filter element have higher strength and hardness and can withstand certain pressure and mechanical shock. Compared with common paper filter elements, polymer sintered microporous filter elements have the advantages of high filtration efficiency, easy cleaning and good chemical stability, and are widely used in pharmaceutical, chemical and food industries.

[0003] The traditional filtering device that uses polymer sintered microporous filter element for solid-liquid separation is mainly composed of filter element, shell, inlet and outlet water pipes and backwashing components. When in use, the pump conveys water to the shell through the water inlet pipe. Under the action of pressure, the water flows into the filter element through the microporous channel of the filter element. The impurities in the water are intercepted by the filter element to achieve water filtration. When the filter element is blocked, the flushing medium is injected into the interior of the filter element through the backwashing component, so that the impurities in the microporous channel of the filter element are taken out by the flushing medium, and the filter element is cleaned and unblocked.

[0004] During use, the existing filtering device will cause differences in the degree of blockage at different locations on the filter element surface due to factors such as uneven distribution of impurities in the water and water flow distribution. In areas where the filter element is severely blocked, impurities can easily form a relatively stable blockage structure on the surface or inside the filter element. The filtering device is generally connected to a water pipe, and the water pressure inside the device will not change significantly. During filtering, water will pass through the channel with the least resistance in the filter element under pressure, that is, it will pass through the lightly blocked area. The severely blocked area can no longer exert the filtering effect, which shortens the service life of the filter element. Summary of the invention

[0005] The purpose of the present invention is to solve the problem that the degree of blockage at various places on the surface of the filter element varies. During filtration, water will preferentially pass through the channel with the least resistance in the filter element under pressure, and the severely blocked area can no longer exert the filtering effect, resulting in a shortened service life of the filter element. A filtering device with a polymer sintered microporous filter element is proposed.

[0006] In order to achieve the above-mentioned purpose, the present invention adopts the following technology: a filtering device with a polymer sintered microporous filter element: comprising an outer shell, a water inlet pipe and a water outlet pipe are fixedly installed on the top and bottom of the outer shell respectively, a separation cylinder is fixedly connected to the inside of the outer shell, and a polymer sintered filter element is arranged inside the separation cylinder, and further comprising:

[0007] A driving mechanism, wherein the driving mechanism comprises a motor fixedly mounted inside the outer shell, a rotating disk is fixedly connected to the driving shaft of the motor, a connecting piece is rotatably connected inside the outer shell, a transmission belt is transmission-connected between the rotating disk and the connecting piece, a connecting cylinder communicating with the inside of the polymer sintered filter element is slidably connected inside the connecting piece, a guide groove is provided on the outside of the connecting cylinder, a fixing sleeve sleeved on the outside of the connecting sleeve is fixedly connected inside the outer shell, a convex block embedded in the guide groove is provided on the inner wall of the fixing sleeve, an end cap is fixedly connected to the top of the connecting cylinder, and a cleaning assembly is provided on the outside of the polymer sintered filter element;

[0008] A periodic pressurizing assembly, the periodic pressurizing assembly comprising a spring telescopic rod fixedly connected to the end cover, the top end of the spring telescopic rod being rotatably connected to a pressure plate;

[0009] The motor drives the connecting cylinder to rotate through a turntable, a transmission belt and a connecting piece. When the connecting cylinder rotates, it moves up and down through the limit of the protrusion, so that the polymer sintered filter element moves during filtering and backwashing, and the pressure plate moves up and down during filtering to periodically pressurize the water.

[0010] As a further description of the above technology, a filtering device with a polymer sintered microporous filter element is provided: the top of the separating cylinder is fixedly connected to a top cover, the bottom of the top cover is fixedly connected to a sleeve and a hollow positioning rod that passes through the sleeve and is connected to the water inlet pipe, the interior of the sleeve is slidably connected to a piston plate, a support spring is provided between the piston plate and the top cover, a magnetic block 1 is fixedly embedded on the outer side of the piston plate, a support pin is slidably connected to the outer side of the sleeve, a reset spring is provided between the support pin and the sleeve, and a magnetic block 2 is fixedly connected to the interior of the support pin.

[0011] As a further description of the above technology, a filtering device with a polymer sintered microporous filter element is provided: the bottom of the outer side of the support pin is inclined, and an extension rod penetrating the top cover and the outer shell is fixedly connected to the piston plate.

[0012] As a further description of the above technology, a filtering device with a polymer sintered microporous filter element is provided: the cleaning component includes a connecting cover rotatably connected to the inside of the end cover, the bottom of the connecting cover and the inside of the end cover are fixedly connected with a convex plate, and a scraper is arranged on the outside of the polymer sintered filter element.

[0013] As a further description of the above technology, a filtering device with a polymer sintered microporous filter element is provided: the outside of the end cover is fixedly connected to a mounting bar 1, the inside of the mounting bar 1 is slidably connected to a mounting bar 2, and a spring 1 is provided between the mounting bar 2 and the mounting bar 1.

[0014] As a further description of the above technology, a filtering device with a polymer sintered microporous filter element is provided: the scraper is slidably connected to the inside of the second mounting bar and a second spring is provided between the scraper and the second mounting bar.

[0015] As a further description of the above technology, a filtering device with a polymer sintered microporous filter element also includes a sealing unit, which includes a push block slidably connected to the inside of a connecting cover, the inside of the connecting cover is slidably connected to a gasket located above the push block, the connecting cover is sleeved on the end of the polymer sintered filter element, and a sealing ring is arranged between the polymer sintered filter element and the gasket.

[0016] As a further description of the above technology, a filtering device with a polymer sintered microporous filter element is provided: a card slot is provided on the inner wall of the connecting cover, a spring piece is fixedly connected to the bottom of the pushing block, and the bottom end of the spring piece is embedded in the card slot.

[0017] As a further description of the above technology, a filtering device with a polymer sintered microporous filter element is provided: a backwash outlet pipe penetrating the outer shell is fixedly connected to the bottom of the separation cylinder, a backwash inlet pipe is fixedly connected to one side of the outlet pipe, and valves are installed on both the backwash outlet pipe and the backwash inlet pipe.

[0018] As a further description of the above technology, a filtering device with a polymer sintered microporous filter element is provided: the bottom of the connecting cylinder is rotatably connected to a telescopic tube fixed to the water outlet pipe.

[0019] In summary, due to the use of the above-mentioned technology, a filtering device with a polymer sintered microporous filter element has the following beneficial effects:

[0020] By providing a periodic pressurizing component, the interior of the separation cylinder can be periodically pressurized after the polymer sintered filter element is blocked to a certain extent, so that the water flow is more evenly distributed in various parts of the polymer sintered filter element, increasing the water flow impact on the seriously blocked area of ​​the polymer sintered filter element, breaking the blockage balance of the polymer sintered filter element, thereby restoring part of the filtration channel of the polymer sintered filter element and extending the service life of the polymer sintered filter element. Under pressure, water can also be filtered by the polymer sintered filter element more quickly, alleviating the problem of flux reduction caused by the increased blockage of the polymer sintered filter element, and improving the water filtration efficiency. In this process, the spring telescopic rod can limit the maximum pressure during pressurization to avoid the damage of the polymer sintered filter element due to excessive pressure. At the same time, after the polymer sintered filter element is unblocked, the periodic pressurizing component can automatically reset, which is convenient for repeated use. The height of the piston plate can also be judged by the extension rod, so as to intuitively understand the blockage degree of the polymer sintered filter element, which is convenient for timely backwashing and replacement of the polymer sintered filter element.

[0021] If the filter element is unclogged by high pressure all the time, the filter element will be damaged due to long-term exposure to excessive pressure. This periodic pressurization design can avoid continuous pressure accumulation. By periodically applying pressure, the polymer sintered filter element has buffer recovery time after each pressure, reducing the damage of pressure to the material structure of the polymer sintered filter element, maintaining the integrity and filtration performance of the polymer sintered filter element, and thus improving the filtration effect of the polymer sintered filter element;

[0022] During the filtration process, the polymer sintered filter element rotates slowly, which improves the fluidity of the surrounding water and enables various parts of the polymer sintered filter element to continuously switch positions, so that various positions on the surface of the polymer sintered filter element are evenly used, improving the uniformity of the overall filtration of the polymer sintered filter element, reducing local blockage of the polymer sintered filter element, and extending the service life of the polymer sintered filter element. In addition, during the backwashing process, the high rotation of the polymer sintered filter element can also use centrifugal force to throw out impurities adhering to its surface, and switch the backwashing to make the flushing medium act on the position of the polymer sintered filter element, thereby enhancing the shear force on the impurities, improving the cleaning effect of backwashing, and reducing the frequency of frequent cleaning or replacement of the polymer sintered filter element due to blockage;

[0023] The polymer sintered filter element can also undergo longitudinal reciprocating motion during the rotation process, which promotes the distribution of water flow at different heights during filtration, and makes the distribution of impurities on the surface of the polymer sintered filter element more dispersed, reduces the probability of local blockage, balances the blockage degree at different positions on the polymer sintered filter element, improves the filtration effect and further extends the service life of the polymer sintered filter element. In addition, during backwashing, the up and down vibration of the polymer sintered filter element can provide vibration force, so that the impurities adhered to the microporous inner wall of the polymer sintered filter element are separated from the polymer sintered filter element under the action of vibration, so that they are more easily taken away by the flushing medium, thereby improving the dredging effect. In addition, the up and down movement of the polymer sintered filter element can continuously change the angle of the flushing medium flushing the polymer sintered filter element during backwashing, so that the impurities inside the polymer sintered filter element are subjected to force in different directions, thereby promoting the separation of impurities from the polymer sintered filter element.

[0024] Each time the motor is started and shut down, the scraper and the polymer sintered filter element will be misaligned, so that large-volume impurities adhering to the outside of the polymer sintered filter element can be removed to prevent the polymer sintered filter element from being blocked by large-volume impurities. In addition, when the polymer sintered filter element moves up and down, the scraper will not only move up and down under the action of inertia, but also collide with the connection cover to generate vibration, so as to prevent the impurities scraped by the scraper from accumulating around the scraper, further improving the cleaning effect.

[0025] After the scraper rotates with the polymer sintered filter element, it will be separated from the surface of the polymer sintered filter element under the action of centrifugal force, thereby avoiding the surface of the polymer sintered filter element from being blocked, so that the surface of the polymer sintered filter element can play a filtering effect everywhere, ensuring the use effect of the polymer sintered filter element, and making the pressure around the polymer sintered filter element more balanced, thereby improving the filtering effect;

[0026] During the rotation of the connecting cover, the push block will squeeze the gasket and the sealing ring under the action of centrifugal force, so that the sealing ring and the polymer sintered filter element are more tightly connected, to prevent the polymer sintered filter element from loosening after the sealing ring is aged, resulting in water being discharged directly without being filtered by the polymer sintered filter element; at the same time, the extrusion of the sealing ring can also reinforce the polymer sintered filter element and improve the stability of the polymer sintered filter element during movement; at the same time, the push block can also be locked by the spring piece to prevent the push block from resetting after the polymer sintered filter element stops rotating, resulting in looseness between the sealing ring and the polymer sintered filter element again; the faster the rotation speed, the greater the centrifugal force applied to the push block, and the greater the force with which the push block squeezes the gasket and the sealing ring; therefore, the faster the rotation speed of the push block, the more firmly the polymer sintered filter element is squeezed by the sealing ring, so that the polymer sintered filter element can rotate stably when impurities are thrown out by centrifugal force. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 An overall schematic diagram provided according to an embodiment of the present invention is shown;

[0028] Figure 2 An internal schematic diagram provided according to an embodiment of the present invention is shown;

[0029] Figure 3 It shows a schematic diagram of the interior of a separation cylinder provided according to an embodiment of the present invention;

[0030] Figure 4 A schematic diagram of a piston plate provided according to an embodiment of the present invention is shown;

[0031] Figure 5 The embodiment of the present invention provides Figure 4 The enlarged schematic diagram at A in the middle;

[0032] Figure 6 It shows an exploded schematic diagram of a fixing sleeve provided in an embodiment of the present invention;

[0033] Figure 7 It shows an exploded schematic diagram of a connection cover provided according to an embodiment of the present invention;

[0034] Figure 8 A schematic cross-sectional view of an end cover provided in an embodiment of the present invention is shown;

[0035] Fig. 9 The embodiment of the present invention provides Figure 8 The enlarged schematic diagram of point B in the middle;

[0036] Fig.10 A schematic diagram of the top of a scraper provided according to an embodiment of the present invention is shown.

[0037] Legend:

[0038] 10. Outer shell; 11. Water inlet pipe; 12. Water outlet pipe; 13. Backwash inlet pipe; 14. Backwash outlet pipe; 15. Polymer sintered filter element; 16. Separation tube; 17. Telescopic tube;

[0039] 20. Driving mechanism; 21. Motor; 22. Turntable; 23. Driving belt; 24. Connecting piece; 25. Fixing sleeve; 26. Connecting tube; 261. Guide groove; 27. Bump; 28. End cover; 29. ​​Cleaning assembly; 291. Bump plate; 292. Connecting cover; 293. Mounting strip 1; 294. Mounting strip 2; 295. Spring 1; 296. Spring 2; 297. Scraper;

[0040] 30. Periodic pressurizing assembly; 31. Spring telescopic rod; 32. Pressing plate; 33. Top cover; 34. Sleeve; 35. Hollow positioning rod; 36. Support spring; 37. Piston plate; 38. Magnetic block 1; 39. Support pin; 310. Magnetic block 2; 311. Reset spring; 312. Extension rod;

[0041] 40. Sealing unit; 41. Card slot; 42. Push block; 43. Spring piece; 44. Gasket; 45. Sealing ring. DETAILED DESCRIPTION

[0042] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technology in the embodiments of the present invention, a filtering device with a polymer sintered microporous filter element. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0043] like Figure 1-Figure 10 As shown, the present invention provides a filtering device with a polymer sintered microporous filter element: comprising an outer shell 10, a water inlet pipe 11 and a water outlet pipe 12 are fixedly installed on the top and bottom of the outer shell 10, a plurality of separation cylinders 16 are fixedly connected to the inside of the outer shell 10, and a polymer sintered filter element 15 is arranged inside the separation cylinder 16, and further comprising:

[0044] The driving mechanism 20 includes a motor 21 fixedly mounted inside the outer shell 10, a turntable 22 is fixedly connected to the driving shaft of the motor 21, a plurality of connectors 24 arranged in a straight line and equidistant from each other are rotatably connected inside the outer shell 10, a transmission belt 23 is drivingly connected between the turntable 22 and the connectors 24 and between adjacent connectors 24, a connecting cylinder 26 communicating with the inside of the polymer sintered filter element 15 is slidably connected inside the connector 24, a guide groove 261 is provided on the outside of the connecting cylinder 26, a fixing sleeve 25 sleeved on the outside of the connecting cylinder 26 is fixedly connected inside the outer shell 10, a convex block 27 embedded in the guide groove 261 is provided on the inner wall of the fixing sleeve 25, an end cap 28 is fixedly connected to the top of the connecting cylinder 26, the end caps 28 are sleeved on the top and bottom of the polymer sintered filter element 15, and a cleaning component 29 is provided on the outside of the polymer sintered filter element 15;

[0045] The periodic pressurizing assembly 30 includes a spring telescopic rod 31 fixedly connected to the end cover 28, and the top of the spring telescopic rod 31 is rotatably connected to a pressure plate 32. The end cover 28 will drive the pressure plate 32 to move up and down through the spring telescopic rod 31 during the up and down movement. When the pressure plate 32 moves down, it will pressurize the water in the separation cylinder 16, which has the effect of unblocking the polymer sintered filter element 15 and accelerating the filtration. Moreover, under the action of the spring telescopic rod 31, when the spring telescopic rod 31 is pressed down to make the internal pressure of the separation cylinder 16 reach a certain level, it is difficult for the pressure plate 32 to continue to press down. At this time, the spring telescopic rod 31 will extend to prevent the pressure plate 32 from continuing to press down, resulting in excessive internal pressure in the separation cylinder 16 and damaging the polymer sintered filter element 15.

[0046] The motor 21 drives the connecting tube 26 to rotate through the turntable 22, the transmission belt 23 and the connecting piece 24. When the connecting tube 26 rotates, it moves up and down through the protrusion 27 to limit the movement, so that the polymer sintered filter element 15 moves during filtering and backwashing, thereby improving the uniformity of filtration of the polymer sintered filter element 15, avoiding local blockage, and improving the backwashing cleaning effect of the polymer sintered filter element 15, so that the pressure plate 32 moves up and down during filtration to periodically pressurize the water.

[0047] Reference Figure 2-Figure 5 The top of the separation cylinder 16 is fixedly connected with a top cover 33, the bottom of the top cover 33 is fixedly connected with a sleeve 34 and a hollow positioning rod 35 that passes through the sleeve 34 and is connected to the water inlet pipe 11, and the water inlet pipe 11 is provided with a water outlet that is connected to the inside of the separation cylinder 16. The bottom end of the hollow positioning rod 35 is inserted into the end cover 28 that is sleeved on the top end of the polymer sintered filter element 15, which plays a positioning effect and prevents the polymer sintered filter element 15 from tilting due to the thrust of the water flow. The inside of the sleeve 34 is slidably connected with a piston plate 37, and the piston plate 37 is sleeved on the outside of the hollow positioning rod 35. A support spring 36 is provided between the piston plate 37 and the top cover 33, and a magnetic block 38 is fixedly embedded on the outer side of the piston plate 37. The outer side of the sleeve 34 is slidably connected with a support pin 39. A return spring 311 is provided between the support pin 39 and the sleeve 34, and a magnetic block 2 310 is fixedly connected to the inside of the support pin 39. When the polymer sintered filter element 15 is slightly blocked, the pressure plate 32 will not move up and down under the limitation of the support pin 39 and the ring on the outer wall of the sleeve 34. When the polymer sintered filter element 15 is seriously blocked, the internal pressure of the separation cylinder 16 will increase. At this time, the piston plate 37 drives the magnetic block 1 38 to move upward under pressure until the magnetic attraction of the magnetic block 1 38 sucks the magnetic block 2 310 and the support pin 39 into the interior of the sleeve 34. At this time, the pressure plate 32 loses the support of the support pin 39, and the up and down movement of the polymer sintered filter element 15 and the end cover 28 can drive the pressure plate 32 to move through the spring telescopic rod 31, thereby realizing periodic pressurization.

[0048] Reference Figure 3 and Figure 5The bottom of the outer side of the support pin 39 is inclined. After the polymer sintered filter element 15 is partially unblocked under pressure, the internal pressure of the separation cylinder 16 is reduced, which will cause the piston plate 37 to reset under the elastic force of the support spring 36. At this time, the pressure plate 32 will squeeze the inclined surface of the support pin 39 by itself after moving upward, so that the support pin 39 will retract into the sleeve 34, and the pressure plate 32 will enter between the support pin 39 and the outer ring of the sleeve 34 again and be locked, waiting for the separation cylinder 16 to be periodically pressurized again. An extension rod 312 that passes through the top cover 33 and the outer shell 10 is fixedly connected to the piston plate 37. When the internal pressure of the separation cylinder 16 increases, the piston plate 37 moves upward, which will drive the extension rod 312 to move upward. Therefore, the internal pressure of the separation cylinder 16 can be judged by observing the height of the extension rod 312, thereby judging the degree of blockage of the polymer sintered filter element 15, so as to facilitate timely replacement or backwashing of the polymer sintered filter element 15.

[0049] Reference Figure 3 , Figure 6 and Figure 7 The cleaning assembly 29 includes a connecting cover 292 rotatably connected to the inside of the end cover 28. The bottom of the connecting cover 292 and the inside of the end cover 28 are fixedly connected with a convex plate 291. When the end cover 28 rotates with the connecting cylinder 26, the convex plate 291 inside it is driven to rotate. At this time, the connecting cover 292 does not rotate. When the convex plate 291 inside the end cover 28 rotates to contact the convex plate 291 at the bottom of the connecting cover 292, the rotation of the end cover 28 will push the connecting cover 292 to rotate through the convex plate 291. Therefore, before the polymer sintered filter element 15 rotates, the end cover 28 and the connecting cover 292 will be misaligned. The outside of the polymer sintered filter element 15 is provided with The scraper 297 will move with the end cover 28, and the connecting cover 292 will move with the polymer sintered filter element 15. Therefore, the polymer sintered filter element 15 will be misaligned with the scraper 297 before it rotates, so that the scraper 297 can remove the external impurities of the polymer sintered filter element 15, and after the end cover 28 stops rotating, the polymer sintered filter element 15 will continue to rotate under its own inertia. At this time, the scraper 297 will be misaligned with the polymer sintered filter element 15 again, which not only cleans the polymer sintered filter element 15 again, but also ensures that when the end cover 28 rotates again, the scraper 297 will be misaligned with the polymer sintered filter element 15 to achieve a cleaning effect.

[0050] Reference Figure 6 and Fig.10The outside of the end cover 28 is fixedly connected with a mounting bar 293, and the inside of the mounting bar 293 is slidably connected with a mounting bar 294. A spring 295 is provided between the mounting bar 294 and the mounting bar 293. When the end cover 28 drives the mounting bar 293 to move up and down, the mounting bar 294 will slide up and down inside the mounting bar 293 under the action of its own inertia. The spring 295 is used to reset the mounting bar 294 when it stops inertial sliding. The up and down movement of the mounting bar 294 will drive the scraper 297 to move together, thereby causing the scraper 297 to vibrate and shake off the impurities accumulated in the angle between the outside of the scraper 297 and the polymer sintered filter element 15, thereby avoiding the accumulation of impurities on the surface of the polymer sintered filter element 15.

[0051] Reference Fig.10 The scraper 297 is slidably connected to the inside of the second mounting bar 294 and a spring 296 is provided between the scraper 297 and the second mounting bar 294. At the beginning of the start-up of the motor 21, the scraper 297 rotates slowly. At this time, the centrifugal force exerted on the scraper 297 is not enough to compress the spring 296. The scraper 297 contacts the outer wall of the polymer sintered filter element 15. Therefore, after the scraper 297 and the polymer sintered filter element 15 are misaligned, the impurities on the surface of the polymer sintered filter element 15 can be scraped off. When the driving shaft of the motor 21 reaches the target speed, the scraper 297 is driven to rotate and the centrifugal force generated causes it to compress the spring 296. At this time, the scraper 297 is separated from the outer wall of the polymer sintered filter element 15, so that there is no obstruction on the surface of the polymer sintered filter element 15 when the filtering effect is exerted.

[0052] Reference Fig. 9 , and also includes a sealing unit 40, which includes a push block 42 slidably connected to the inside of the connecting cover 292, and the inside of the connecting cover 292 is slidably connected to a gasket 44 located above the push block 42, and the connecting cover 292 is sleeved on the end of the polymer sintered filter element 15, and a sealing ring 45 is arranged between the polymer sintered filter element 15 and the gasket 44. When the end cover 28 drives the connecting cover 292 to rotate through the convex plate 291, the push block 42 squeezes the gasket 44 under the action of centrifugal force, so that the gasket 44 moves upward to squeeze the sealing ring 45 on the polymer sintered filter element 15, so as to prevent water from flowing out from between the sealing ring 45 and the polymer sintered filter element 15 without being filtered, and because the faster the rotation speed, the greater the centrifugal force applied to the push block 42, so that it is convenient to make the polymer sintered filter element 15 rotate stably when cleaning impurities by centrifugal force, so as to cooperate with backwashing.

[0053] A card slot 41 is provided on the inner wall of the connecting cover 292, and a spring piece 43 is fixedly connected to the bottom of the push block 42. The bottom end of the spring piece 43 is embedded in the card slot 41. In the process of the push block 42 squeezing the gasket 44, the spring piece 43 will change the position of the embedded inside the card slot 41. The support and locking of the spring piece 43 can prevent the push block 42 from resetting when the centrifugal force is lost, so that the gasket 44, the sealing ring 45 and the polymer sintered filter element 15 can maintain a stable extrusion state.

[0054] Reference Figure 1 and Figure 3 A backwash outlet pipe 14 that penetrates the outer shell 10 is fixedly connected to the bottom of the separation cylinder 16. The inner area of ​​the outer shell 10 is evenly divided by multiple separation cylinders 16, so that the polymer sintered filter element 15 located in each separation cylinder 16 is evenly used. A backwash inlet pipe 13 is fixedly connected to one side of the outlet pipe 12. Valves are installed on the backwash outlet pipe 14 and the backwash inlet pipe 13. During backwashing, a flushing medium is injected into the interior of the polymer sintered filter element 15 through the backwash inlet pipe 13 and the outlet pipe 12. The flushing medium takes away the impurities and then discharges them through the backwash outlet pipe 14.

[0055] Reference Figure 2 The bottom of the connecting tube 26 is rotatably connected to a telescopic tube 17 fixed to the water outlet pipe 12, so that the water filtered by the polymer sintered filter element 15 can be directly discharged through the water outlet pipe 12, thereby improving the discharge efficiency of the filtered water.

[0056] Working principle: the starter motor 21 drives the turntable 22 to rotate, and drives all the connecting parts 24 to rotate under the transmission of the transmission belt 23. The rotation of the connecting part 24 causes the connecting tube 26 and the end cover 28 to rotate. When the connecting tube 26 rotates, the protrusion 27 slides inside the guide groove 261, so that the connecting tube 26 and the end cover 28 fixed thereto perform reciprocating motion in the vertical direction. The rotation of the end cover 28 drives the convex plate 291, the mounting strip 1 293, the mounting strip 294 and the scraper 297 fixed thereto to move together. After the convex plate 291 on the end cover 28 contacts the convex plate 291 on the connecting cover 292, the end cover 28 drives the connecting cover 292 to rotate together through the convex plate 291. The connecting cover 292 and the polymer sintered filter element 15 will not perform relative motion. Therefore, during this period, the scraper 297 will be misaligned with the polymer sintered filter element 15, and impurities on the surface of the polymer sintered filter element 15 will be scraped off.

[0057] The connection cover 292 rotates to make the push block 42 move outward under the action of centrifugal force, squeezing the gasket 44 and the sealing ring 45, so that the sealing ring 45 is connected and fastened to the polymer sintered filter element 15. The movement of the push block 42 drives the spring sheet 43 to slide on the card slot 41. The spring sheet 43 will be embedded in the card slot 41 after sliding under the action of its own elastic force, so as to support the push block 42 and prevent the push block 42 from resetting.

[0058] When the end cap 28 drives the mounting bar 1 293 fixed thereto to move up and down, the mounting bar 1 293 will vibrate up and down under its own inertia, driving the scraper 297 to move together to shake off the impurities accumulated in the angle between the scraper 297 and the polymer sintered filter element 15. At the same time, when the mounting bar 294 rotates to drive the scraper 297 to rotate, the scraper 297 will compress the spring 296 under the action of its own centrifugal force. At this time, the scraper 297 does not contact the polymer sintered filter element 15, so that the polymer sintered filter element 15 can fully exert its filtering effect.

[0059] When the pressure plate 32 is locked, the end cover 28 can only stretch and compress the spring telescopic rod 31 when it moves up and down. As the polymer sintered filter element 15 is blocked, the pressure in the separation cylinder 16 gradually increases, and the pressure causes the piston plate 37 to drive the magnet block 1 38 to move upward until the magnet block 1 38 pulls the magnet block 2 310 and the support pin 39 into the sleeve 34 through the magnetic attraction force. At this time, the pressure plate 32 loses the support of the support pin 39, and the end cover 28 moves up and down to drive the pressure plate 32 to move up and down through the spring telescopic rod 31. When the pressure plate 32 moves downward, the inside of the separation cylinder 16 is pressurized to promote water filtration and break The internal pressure of the separation cylinder 16 is balanced, and the polymer sintered filter element 15 is unblocked. When the blockage degree of the polymer sintered filter element 15 is reduced, the internal pressure of the separation cylinder 16 is reduced, and the piston plate 37 and the magnetic block 38 are reset under the elastic force of the support spring 36. At this time, the support pin 39 pops out under the elastic force of the reset spring 311. When the pressure plate 32 rises with the spring telescopic rod 31, the support pin 39 is squeezed into the sleeve 34, and the pressure plate 32 enters above the support pin 39 again. The support pin 39 pops out under the elastic force of the reset spring 311 to lock the pressure plate 32, so that the pressure plate 32 can play a role again.

[0060] The above description is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field within the technical scope disclosed by the present invention can make equivalent replacements or changes to a filtering device with a polymer sintered microporous filter element and its inventive concept according to the technology of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A filtering device with a polymer sintered microporous filter element, comprising an outer shell (10), wherein a water inlet pipe (11) and a water outlet pipe (12) are fixedly mounted on the top and bottom of the outer shell (10), respectively, a separator cylinder (16) is fixedly connected to the interior of the outer shell (10), and a polymer sintered filter element (15) is arranged inside the separator cylinder (16), characterized in that: Also includes: A driving mechanism (20), the driving mechanism (20) comprising a motor (21) fixedly mounted inside an outer shell (10), a rotating disk (22) fixedly connected to a driving shaft of the motor (21), a connecting piece (24) rotatably connected inside the outer shell (10), a transmission belt (23) drivingly connected between the rotating disk (22) and the connecting piece (24), a connecting cylinder (26) communicating with the inside of a polymer sintered filter element (15) slidably connected inside the connecting piece (24), a guide groove (261) being provided on the outside of the connecting cylinder (26), a fixing sleeve (25) sleeved on the outside of the connecting cylinder (26) being fixedly connected inside the outer shell (10), a convex block (27) embedded in the guide groove (261) being provided on the inner wall of the fixing sleeve (25), an end cap (28) being fixedly connected to the top of the connecting cylinder (26), and a cleaning assembly (29) being provided on the outside of the polymer sintered filter element (15); A periodic pressurizing assembly (30), the periodic pressurizing assembly (30) comprising a spring telescopic rod (31) fixedly connected to the end cover (28), the top end of the spring telescopic rod (31) being rotatably connected to a pressure plate (32); The motor (21) drives the connecting cylinder (26) to rotate via the rotating disk (22), the transmission belt (23) and the connecting piece (24); when the connecting cylinder (26) rotates, it moves up and down through the limit of the protrusion (27), so that the polymer sintered filter element (15) moves during filtering and backwashing, and the pressing plate (32) moves up and down during filtering to periodically pressurize the water.

2. A filter device with a polymer sintered microporous filter element according to claim 1, characterized in that: The top of the separation cylinder (16) is fixedly connected to a top cover (33), the bottom of the top cover (33) is fixedly connected to a sleeve (34) and a hollow positioning rod (35) that passes through the sleeve (34) and is connected to the water inlet pipe (11), the interior of the sleeve (34) is slidably connected to a piston plate (37), a support spring (36) is provided between the piston plate (37) and the top cover (33), a magnetic block 1 (38) is fixedly embedded on the outer side of the piston plate (37), a support pin (39) is slidably connected to the outer side of the sleeve (34), a return spring (311) is provided between the support pin (39) and the sleeve (34), and a magnetic block 2 (310) is fixedly connected to the interior of the support pin (39).

3. A filter device with a polymer sintered microporous filter element according to claim 2, characterized in that: The bottom of the outer side of the support pin (39) is inclined, and an extension rod (312) penetrating the top cover (33) and the outer shell (10) is fixedly connected to the piston plate (37).

4. The filtering device with a polymer sintered microporous filter element according to claim 1, characterized in that: The cleaning assembly (29) comprises a connection cover (292) rotatably connected to the interior of the end cover (28), a convex plate (291) being fixedly connected to the bottom of the connection cover (292) and the interior of the end cover (28), and a scraper (297) being arranged on the exterior of the polymer sintered filter element (15).

5. A filter device with a polymer sintered microporous filter element according to claim 4, characterized in that: The outside of the end cover (28) is fixedly connected to a first mounting strip (293), the inside of the first mounting strip (293) is slidably connected to a second mounting strip (294), and a first spring (295) is provided between the second mounting strip (294) and the first mounting strip (293).

6. A filter device with a polymer sintered microporous filter element according to claim 5, characterized in that: The scraper (297) is slidably connected to the inside of the second mounting strip (294), and a second spring (296) is provided between the scraper (297) and the second mounting strip (294).

7. The filtering device with a polymer sintered microporous filter element according to claim 4, characterized in that: The invention also comprises a sealing unit (40), wherein the sealing unit (40) comprises a push block (42) slidably connected to the interior of a connection cover (292), the interior of the connection cover (292) being slidably connected to a gasket (44) located above the push block (42), the connection cover (292) being sleeved on the end of a polymer sintered filter element (15), and a sealing ring (45) being provided between the polymer sintered filter element (15) and the gasket (44).

8. The filtering device with a polymer sintered microporous filter element according to claim 7, characterized in that: The inner wall of the connection cover (292) is provided with a slot (41), the bottom of the push block (42) is fixedly connected with a spring sheet (43), and the bottom end of the spring sheet (43) is embedded in the slot (41).

9. The filtering device with a polymer sintered microporous filter element according to claim 1, characterized in that: A backwash outlet pipe (14) penetrating the outer shell (10) is fixedly connected to the bottom of the separation cylinder (16), a backwash inlet pipe (13) is fixedly connected to one side of the outlet pipe (12), and valves are installed on both the backwash outlet pipe (14) and the backwash inlet pipe (13).

10. The filtering device with a polymer sintered microporous filter element according to claim 1, characterized in that: The bottom of the connecting cylinder (26) is rotatably connected to a telescopic tube (17) fixed to the water outlet pipe (12).

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