A filtering device for separating impurities from liquid

Abstract

The present invention discloses a filtering device for separating impurities from liquid, comprising a box body, wherein a first support plate and a second support plate are fixedly disposed up and down in the box body, wherein an intermittently rotating support column is penetrated on the second support plate, wherein a mounting block is fixedly disposed on the upper end of the support column, wherein two shafts capable of being reset are rotatably connected to the mounting block, wherein a supporting ring is fixedly disposed at the opposite ends of the two shafts, wherein the reflux pipe and the sewage pipe are respectively disposed opposite to two filter cartridges, wherein a first piston cylinder is mounted on the first support plate, and the end of the first piston cylinder is fixedly sealed by a sealing plate. The present invention sets two filter cartridges for alternating use, wherein the filter membrane in the other filter cartridge can be backwashed while filtering the liquid, thereby avoiding the disadvantage that the filter membrane can only be cleaned by closing the filter mechanism in the prior art, thereby reducing the efficiency of liquid filtration and increasing the workload of the staff.

Description

Technical Field

[0001] The invention relates to the technical field of filtration, and in particular to a filtration device for separating impurities from liquid. Background Art

[0002] At present, membrane filtration has been widely used in various industries. For example, it is used in the water treatment field to treat various types of water, including tap water, sewage, seawater, etc.; in the biopharmaceutical manufacturing field, it is used to separate or concentrate microorganisms, such as cells, bacteria, viruses, etc., so as to obtain pure biological products; in the food manufacturing field, it is used to remove suspended matter, bacteria, viruses and other microorganisms, as well as dissolved substances, to ensure the safety and quality of food; in the medical field, it is used in hemodialysis, protein purification, pharmaceutical manufacturing, etc., to remove suspended matter, microorganisms and other harmful substances.

[0003] The utility model patent with announcement number CN216755998U relates to the technical field of medical equipment, and in particular to a safe and effective dialysate filtration device, which includes a coarse filter tank, a filter tank and a safety filter tank which are connected in sequence, a liquid storage chamber is arranged inside the filter tank, a first groove is arranged at the bottom of the filter tank, a filter mechanism is detachably installed between the liquid storage chamber and the first groove, a second groove is arranged on the side wall of the first groove, a slider which is sealed and fitted with the inner wall of the second groove is arranged in the second groove, one end of the slider is connected with the first groove, and the other end of the slider is elastically connected to the side wall of the second groove, the slider slides and blocks the overflow port connected with the waste liquid pool, a liquid inlet connected with the coarse filter tank is arranged at the top of the filter tank, and a liquid outlet connected with the safety filter tank is arranged at the bottom of the first groove.

[0004] The utility model patent with announcement number CN220070942U discloses a microbial sample membrane filtration device, which belongs to the field of sterility inspection membrane filtration devices, including: a filtration device, wherein a stirring box is fixedly connected to the lower end of the top plate of the filtration device, a plurality of drainage ports are fixedly connected to the lower end surface of the stirring box, a stirring shaft is rotatably connected between the inner walls on both sides of the stirring box, a plurality of stirring rods are fixedly connected to the outer wall of the stirring shaft, buffer grooves are fixedly opened on the inner walls on both sides of the filtration device, a buffer rod is fixedly connected between the upper and lower inner walls of the two buffer grooves, a slider is slidably sleeved on the outer surface of the two buffer rods, a moving plate is fixedly connected to the outer walls of the two sliders, a filter box is fixedly connected between the two moving plates, and a filter membrane is fixedly arranged in the filter box.

[0005] The above-mentioned prior art has the disadvantage that the filter membrane will become clogged after being used for a long time, and the filter membrane can only be cleaned by closing the filter mechanism or stopping the filtration, which reduces the filtration efficiency and increases the workload of the staff; for this reason, the present application proposes a filtration device for separating impurities from liquid. Summary of the invention

[0006] The purpose of the present invention is to solve the above technical problems and to propose a filtering device for separating impurities from liquid.

[0007] In order to achieve the above object, the present invention adopts the following technical solutions:

[0008] A filtering device for separating impurities from liquid comprises a box body, a first supporting plate and a second supporting plate are fixed in the box body and are distributed up and down, a supporting column that rotates intermittently is penetrated on the second supporting plate, a mounting block is fixed on the upper end of the supporting column, two shafts that can be reset are rotatably connected to the mounting block, a supporting ring is fixed on the opposite ends of the two shafts, a filter cartridge that is slidably arranged and can be reset is penetrated on the support ring, a conical rubber sheet is fixed on the upper end of the filter cartridge, a filter membrane is fixed in the filter cartridge, a return pipe and a sewage pipe are installed through the second supporting plate, and the return pipe and the sewage pipe are respectively arranged opposite to the two filter cartridges A first piston cylinder is installed on the first supporting plate, and the end of the first piston cylinder is fixedly sealed by a sealing plate. A first movable piston that reciprocates is slidably connected in the first piston cylinder. A second piston cylinder and a third piston cylinder are fixed on the first supporting plate. A driving mechanism is installed in the second piston cylinder and the third piston cylinder. The reciprocating movement of the first movable piston can realize the downward movement of the two driving mechanisms, push the two filter cylinders downward and respectively abut against the return pipe and the sewage pipe. The filter membrane in the filter cylinder opposite to the return pipe can filter the liquid, and the filter cylinder opposite to the sewage pipe can be backwashed and cleaned after being flipped 180°.

[0009] Preferably, the bottom of the support column is rotatably connected to the inner bottom of the box body through a damping shaft, a reduction box is installed at the bottom of the second support plate, a short shaft is installed at the shaft end of the reduction box, the inner bottom of the box body is rotatably connected to a vertical rod, and transmission wheels are installed on the vertical rod and the short shaft, and the two transmission wheels are connected by a belt, a first gear is fixed on the vertical rod, and the first gear is an incomplete gear, and a second gear is fixed on the support column, and the first gear is meshed with the second gear.

[0010] Preferably, a torsion spring is installed between the shaft and the mounting block.

[0011] Preferably, a fixing ring is fixed on the filter cartridge, a first spring is fixed on the fixing ring, the other end of the first spring is fixedly connected to the supporting ring, and the first spring is sleeved on the outside of the filter cartridge.

[0012] Preferably, it also includes a power mechanism for driving the first movable piston to reciprocate, the power mechanism includes a mounting plate fixed on the first support plate, a motor is mounted on the mounting plate, the output end of the motor is fixedly connected to a drive shaft, a disc is fixed on the drive shaft, a connecting rod is hingedly connected to the disc, a round rod is fixed to the other end of the connecting rod, the round rod passes through the sealing plate and is slidably connected to it, and the round rod is fixedly connected to the first movable piston.

[0013] Preferably, the driving mechanism includes a second movable piston sliding in a second piston cylinder and a third piston cylinder, a fixed movable tube passes through the second movable piston, a pressure relief valve is fixed in the movable tube, a second spring is fixed between the second movable piston and the second piston cylinder and the third piston cylinder, and a rubber plug is fixed at the bottom of the movable tube.

[0014] Preferably, it also includes a pipeline mechanism connecting the first piston cylinder, the second piston cylinder, and the third piston cylinder, the pipeline mechanism includes a first liquid inlet pipe and a first liquid outlet pipe installed on the first piston cylinder, a liquid storage tank and a backwash water tank are installed on the box body, the first liquid inlet pipe is connected to the liquid storage tank, and a first one-way valve is installed on the first liquid inlet pipe, the first liquid outlet pipe is connected to the second piston cylinder, a second liquid inlet pipe and a second liquid outlet pipe connected to the first piston cylinder are installed through the sealing plate, the second liquid inlet pipe is connected to the backwash water tank, a second one-way valve is installed on the second liquid inlet pipe, and the second liquid outlet pipe is connected to the third piston cylinder.

[0015] Preferably, it also includes a transmission mechanism for driving the reduction box to rotate, the transmission mechanism includes a transmission rod that penetrates the first support plate and the second support plate for rotation, the transmission rod is fixedly connected to the shaft end of the reduction box, and bevel gears are installed on the transmission rod and the driving shaft, and the two bevel gears are meshed.

[0016] Preferably, it also includes a rotating mechanism for driving the shaft rod to rotate, the rotating mechanism includes a support rod fixed on the second support plate, an arc-shaped rack plate is fixed on the support rod, and a transmission gear meshing with the arc-shaped rack plate is fixed on the shaft rod.

[0017] Compared with the prior art, the present invention has the following beneficial effects: 1. The pressure can be used to move the moving tube, rubber plug, etc. downward and against the filter cartridge, so that the liquid can be filtered and backwashed without leakage and without the need for additional power equipment.

[0018] 2. When the pressure is greater than the threshold of the pressure relief valve, the pressure relief valve opens to deliver clean water to the filter cartridge to backwash the filter membrane in the filter cartridge. Since the clean water has a certain pressure, the backwashing effect on the filter membrane is better.

[0019] 3. The first piston cylinder can realize the flow supply of liquid for filtering, and can also realize the supply of clean water to backwash the filter membrane.

[0020] 4. The rotation of the support column drives the mounting block, shaft, support ring and filter cartridge to rotate. When the transmission gear on the right shaft disengages from the arc-shaped rack plate, the shaft and filter cartridge are reset under the action of the torsion spring. The transmission gear on the left shaft engages with the arc-shaped rack plate, so that the shaft drives the filter cartridge to rotate 180°. In this way, the filter cartridge for filtering liquid and the filter cartridge after backwashing and cleaning the filter membrane can be swapped to clean the filter membrane that has been used for a long time.

[0021] 5. As the rubber plug moves downward and is inserted into the filter cartridge, it will squeeze the conical rubber sheet downward and make it concave. During the process of the filter cartridge rotating 180°, the residual liquid in the filter cartridge will be blocked by the conical rubber sheet, so that it will not drip into the box and cause pollution to the equipment inside the box.

[0022] 6. When the filter membrane in the filter cartridge is flushed, the impact of clean water can cause the conical rubber sheet to reset and bulge, thereby flushing the remaining liquid and preventing clean water from remaining on the conical rubber sheet.

[0023] In summary, the present invention sets two filter cartridges for alternate use, and can filter the liquid while backwashing the filter membrane in the other filter cartridge, thereby avoiding the disadvantage of the prior art that the filter membrane can only be cleaned by closing the filter mechanism, which reduces the efficiency of liquid filtration and increases the workload of the staff. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a schematic diagram of the structure of a filtering device for separating impurities from liquid proposed by the present invention;

[0025] Figure 2 This is a schematic diagram of the structure of a box in a filtering device for separating impurities from liquid proposed by the present invention;

[0026] Figure 3 This is a schematic structural diagram of a reduction gearbox in a filtering device for separating impurities from liquid proposed by the present invention;

[0027] Figure 4 This is a schematic structural diagram of a second support plate in a filtering device for separating impurities from a liquid proposed by the present invention;

[0028] Figure 5 This is a schematic structural diagram of a filter cartridge in a filter device for separating impurities from a liquid proposed by the present invention;

[0029] Figure 6A cross-sectional view of a filter cartridge in a filter device for separating impurities from a liquid proposed by the present invention;

[0030] Figure 7 This is a schematic structural diagram of a first support plate in a filtering device for separating impurities from liquid proposed by the present invention;

[0031] Figure 8 A rear view of a first support plate in a filtering device for separating impurities from a liquid proposed by the present invention;

[0032] Fig. 9 This is a cross-sectional view of a second piston cylinder and a third piston cylinder in a filtering device for separating impurities from a liquid proposed by the present invention;

[0033] Fig.10 The cross-sectional view of the first piston cylinder in the filtering device for separating impurities from liquid proposed by the present invention.

[0034] In the figure: 1 box, 2 liquid collection box, 3 sewage tank, 4 liquid storage box, 5 backwash water tank, 6 first liquid inlet pipe, 7 first support plate, 8 second support plate, 9 return pipe, 10 sewage pipe, 11 support column, 12 shaft rod, 13 filter cylinder, 14 first piston cylinder, 15 second piston cylinder, 16 third piston cylinder, 17 reduction box, 18 short shaft, 19 transmission wheel, 20 belt, 21 vertical rod, 22 first gear, 23 second gear, 24 support rod, 25 arc rack plate, 26 transmission gear, 2 7 mounting block, 28 torsion spring, 29 supporting ring, 30 fixing ring, 31 first spring, 32 conical rubber sheet, 33 filter membrane, 34 transmission rod, 35 first liquid outlet pipe, 36 first movable piston, 37 first one-way valve, 38 second liquid inlet pipe, 39 second liquid outlet pipe, 40 motor, 41 disc, 42 second one-way valve, 43 pressure relief valve, 44 sealing plate, 45 round rod, 46 driving shaft, 47 bevel gear, 48 connecting rod, 49 second movable piston, 50 second spring, 51 movable pipe, 52 rubber plug. DETAILED DESCRIPTION

[0035] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0036] Reference Figure 1-Figure 10 A filtering device for separating impurities from liquid comprises a box body 1 on which a switch door is installed; a first support plate 7 and a second support plate 8 are fixed in the box body 1 and are distributed up and down; an intermittently rotating support column 11 is penetrated by the second support plate 8; the bottom of the support column 11 is rotatably connected to the inner bottom of the box body 1 through a damping shaft, and the support column 11 can be limited; wherein the rotation resistance of the damping shaft is greater than the torsion of the torsion spring 28.

[0037] A reduction box 17 is installed at the bottom of the second support plate 8, and a short shaft 18 is installed at the shaft end of the reduction box 17. The inner bottom of the box body 1 is rotatably connected to a vertical rod 21. Transmission wheels 19 are installed on the vertical rod 21 and the short shaft 18. The two transmission wheels 19 are connected by a belt 20. A first gear 22 is fixed on the vertical rod 21, and the first gear 22 is an incomplete gear. A second gear 23 is fixed on the support column 11, and the first gear 22 is meshed with the second gear 23. Therefore, the continuous rotation of the first gear 22 can drive the second gear 23 to rotate intermittently.

[0038] It also includes a transmission mechanism for driving the reduction box 17 to rotate, the transmission mechanism includes a transmission rod 34 that penetrates the first support plate 7 and the second support plate 8 to rotate, the transmission rod 34 is fixedly connected to the shaft end of the reduction box 17, and bevel gears 47 are installed on the transmission rod 34 and the drive shaft 46, and the two bevel gears 47 are meshed.

[0039] It also includes a rotating mechanism for driving the shaft rod 12 to rotate, the rotating mechanism includes a support rod 24 fixed on the second support plate 8, an arc-shaped rack plate 25 is fixed on the support rod 24, and a transmission gear 26 meshing with the arc-shaped rack plate 25 is fixed on the shaft rod 12; a mounting block 27 is fixed to the upper end of the support column 11, and two shaft rods 12 that can be reset are rotatably connected to the mounting block 27, and a torsion spring 28 is installed between the shaft rod 12 and the mounting block 27. When the shaft rod 12 is not driven by external force, that is, the arc-shaped rack plate 25 is not meshed with the transmission gear 26, the shaft rod 12 can be reset under the action of the torsion spring 28.

[0040] A support ring 29 is fixed to the opposite ends of the two shafts 12, and a slidable and resettable filter cartridge 13 is passed through the support ring 29. A fixing ring 30 is fixed to the filter cartridge 13, and a first spring 31 is fixed to the fixing ring 30. The other end of the first spring 31 is fixedly connected to the support ring 29. The first spring 31 is sleeved on the outside of the filter cartridge 13, and the filter cartridge 13 can be reset by using the first spring 31.

[0041] A conical rubber sheet 32 ​​is fixed to the upper end of the filter cartridge 13, a filter membrane 33 is fixed inside the filter cartridge 13, a return pipe 9 and a sewage pipe 10 are installed through the second support plate 8, a liquid collection box 2 and a sewage tank 3 are installed on the box body 1, the return pipe 9 is connected to the liquid collection box 2, and the sewage pipe 10 is connected to the sewage tank 3.

[0042] The return pipe 9 and the sewage pipe 10 are respectively arranged opposite to the two filter cylinders 13. The first piston cylinder 14 is installed on the first support plate 7. The end of the first piston cylinder 14 is fixedly sealed by a sealing plate 44. A first movable piston 36 is slidably connected in the first piston cylinder 14 and moves back and forth. It also includes a power mechanism for driving the first movable piston 36 to move back and forth. The power mechanism includes a mounting plate fixed on the first support plate 7, and a motor 40 is mounted on the mounting plate. A driving shaft 46 is fixedly connected to the output end of the motor 40. A disc 41 is fixed on the driving shaft 46. A connecting rod 48 is hingedly connected to the disc 41. A round rod 45 is fixed to the other end of the connecting rod 48. The round rod 45 passes through the sealing plate 44 and is slidably connected to it. The round rod 45 is fixedly connected to the first movable piston 36.

[0043] The second piston cylinder 15 and the third piston cylinder 16 are fixed on the first support plate 7, and a driving mechanism is installed in the second piston cylinder 15 and the third piston cylinder 16. The driving mechanism includes a second movable piston 49 sliding in the second piston cylinder 15 and the third piston cylinder 16, and a fixed movable tube 51 is passed through the second movable piston 49, and a pressure relief valve 43 is fixed in the movable tube 51. A second spring 50 is fixed between the second movable piston 49 and the second piston cylinder 15 and the third piston cylinder 16, and a rubber plug 52 is fixed to the bottom of the movable tube 51.

[0044] The utility model also includes a pipeline mechanism connecting the first piston cylinder 14, the second piston cylinder 15, and the third piston cylinder 16, the pipeline mechanism includes a first liquid inlet pipe 6 and a first liquid outlet pipe 35 installed on the first piston cylinder 14, a liquid storage tank 4 and a backwashing water tank 5 are installed on the box body 1, the first liquid inlet pipe 6 is connected to the liquid storage tank 4, and a first non-return valve 37 is installed on the first liquid inlet pipe 6, and the first non-return valve 37 only allows the liquid in the liquid storage tank 4 to flow into the first piston cylinder 14; the first liquid outlet pipe 35 is connected to the second piston cylinder 15, and a second liquid inlet pipe 38 and a second liquid outlet pipe 39 connected to the first piston cylinder 14 are installed on the sealing plate 44, the second liquid inlet pipe 38 is connected to the backwashing water tank 5, a second non-return valve 42 is installed on the second liquid inlet pipe 38, and the second liquid outlet pipe 39 is connected to the third piston cylinder 16, and the second non-return valve 42 only allows the water in the backwashing water tank 5 to enter the first piston cylinder 14 through the second liquid inlet pipe 38.

[0045] The reciprocating movement of the first movable piston 36 can realize the downward movement of the two driving mechanisms, push the two filter cartridges 13 downward and respectively abut against the return pipe 9 and the sewage pipe 10. The filter membrane 33 in the filter cartridge 13 opposite to the return pipe 9 can filter the liquid, and the filter cartridge 13 opposite to the sewage pipe 10 can be flipped 180° to backwash and clean the filter membrane 33 in the filter cartridge 13.

[0046] The liquid of the present invention flows from the body to the liquid storage box 4, is stored in the liquid storage box 4, and the motor 40 is started; it should be noted that at this time, the two filter cylinders 13 are opposite to the return pipe 9, the sewage pipe 10, the second piston cylinder 15, and the third piston cylinder 16, so that Figure 2 As shown, the support column 11 can be positioned by using the damping shaft so that it is not easy to rotate;

[0047] The motor 40 rotates slowly to drive the driving shaft 46 to rotate, and the rotation of the driving shaft 46 drives the disc 41 to rotate, and the round rod 45 is driven by the connecting rod 48 to reciprocate. The reciprocating movement of the round rod 45 drives the first movable piston 36 to reciprocate. When the first movable piston 36 moves close to the motor 40, the liquid in the second piston cylinder 15 can be sucked into the first piston cylinder 14. Under the action of the second spring 50, the second movable piston 49 cannot move. That is to say, at this time, the second movable piston 49 drives the movable tube 51 and the rubber plug 52 to move upward, and at the same time, the liquid in the liquid storage tank 4 can be sucked into the first piston cylinder 14 through the first liquid inlet pipe 6; the movement of the first movable piston 36 can squeeze the water stored in the first piston cylinder 14 between the sealing plate 44 and the first movable piston 36 to the first movable piston 36. The pressure in the third piston cylinder 16 increases, thereby driving the second movable piston 49 to move downward. The second movable piston 49 moves downward, driving the movable tube 51 and the rubber plug 52 to move downward, and finally the rubber plug 52 abuts against the inverted filter cartridge 13. As the movable tube 51 and the rubber plug 52 move downward, the filter cartridge 13 can be driven to move downward, and finally the filter cartridge 13 is inserted into the sewage pipe 10 and cannot move downward. As the water pressure in the movable tube 51 increases, when the pressure is greater than the threshold of the pressure relief valve 43, the pressure relief valve 43 opens to transport clean water into the filter cartridge 13, and backwashes the filter membrane 33 in the filter cartridge 13. Since the clean water has a certain pressure, the backwashing effect on the filter membrane 33 is better. Finally, the clean water flows through the filter cartridge 13 to the sewage pipe 10 and is collected in the sewage tank 3.

[0048] When the first movable piston 36 moves away from the motor 40, the liquid in the first piston cylinder 14 can be transported to the second piston cylinder 15 through the first liquid outlet pipe 35, and the pressure in the second piston cylinder 15 increases, which is the same as the principle of the rubber plug 52 in the third piston cylinder 16 moving downward, and finally drives the filter cylinder 13 to move downward and make the filter cylinder 13 and the return pipe 9 collide. When the pressure is greater than the threshold value of the pressure relief valve 43, the pressure relief valve 43 opens to allow the liquid to be transported to the filter cylinder 13 through the movable pipe 51, and the liquid can be filtered by the filter membrane 33 in the filter cylinder 13. The filtered liquid flows back to the liquid collection box 2 through the return pipe 9, and the liquid in the liquid collection box 2 can be transported to the patient's body.

[0049] At the same time, the first movable piston 36 moves to suck the clean water remaining in the third piston cylinder 16 into the first piston cylinder 14, and the second movable piston 49 moves up until it cannot move, and at the same time, the clean water in the backwash water tank 5 is sucked into the first piston cylinder 14 through the second liquid inlet pipe 38 for use in the next backwashing;

[0050] In this way, the first movable piston 36 moves back and forth to filter the liquid, and at the same time, the filter membrane 33 in the filter cartridge 13 on the other side can be backwashed and cleaned multiple times;

[0051] The rotation of the driving shaft 46 drives the bevel gear 47 to rotate, and the rotation of the bevel gear 47 drives the transmission rod 34 to rotate, thereby driving the reduction box 17 to rotate. The reduction box 17 reduces the speed of the transmission rod 34. The small gear in the reduction box 17 can drive the large gear to reduce speed, or the worm gear can reduce speed; the reduction box 17 reduces the speed and drives the short shaft 18 and the transmission wheel 19 to rotate, and under the transmission of the belt 20, the vertical rod 21 and the first gear 22 are rotated. When the liquid is filtered and the filter membrane 33 is backwashed, the first gear 22 is not meshed with the second gear 23. When the first movable piston 36 moves and the two rubber plugs 52 are not in contact with the filter cylinder 13, the first gear 22 is meshed with the second gear 23 at this time (the results obtained here can be obtained by selecting the appropriate reduction box 17, the first gear 22, and the second gear 23 through multiple tests). The rotation of the first gear 22 drives the second gear 23 to rotate, thereby realizing the rotation of the support column 11, and the rotation angle is 180°, after which the first gear 22 is not meshed with the second gear 23;

[0052] The support column 11 rotates to drive the mounting block 27, the shaft 12, the support ring 29 and the filter cartridge 13 to rotate. Figure 5 As shown, when the transmission gear 26 on the right shaft rod 12 is separated from the arc-shaped rack plate 25, the shaft rod 12 and the filter cartridge 13 are reset under the action of the torsion spring 28, and the transmission gear 26 on the left shaft rod 12 is meshed with the arc-shaped rack plate 25, so that the shaft rod 12 drives the filter cartridge 13 to rotate 180 degrees, so that the filter cartridge 13 for filtering liquid and the filter cartridge 13 after backwashing and cleaning the filter membrane 33 can be exchanged in position, so as to clean the filter membrane 33 that has been used for a long time;

[0053] As the rubber plug 52 moves downward and is inserted into the filter cartridge 13, the conical rubber sheet 32 ​​is pressed downward and recessed. Figure 6 As shown, in this way, when the filter cartridge 13 rotates 180°, the residual liquid in the filter cartridge 13 will be blocked by the conical rubber sheet 32, so that it will not drip into the box body 1, causing pollution to the equipment in the box body 1. When the filter membrane 33 in the filter cartridge 13 is rinsed, the conical rubber sheet 32 ​​can be reset to the protrusion under the impact of clean water, as shown in FIG. Figure 5As shown in the tapered rubber sheet 32 ​​at the lower right end, the remaining liquid can be flushed, and no clear water will remain on the tapered rubber sheet 32;

[0054] The liquid can be filtered in this reciprocating manner, and the filter membrane 33 can be cleaned at the same time without causing clogging of the filter membrane 33, thereby filtering the liquid more effectively.

[0055] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A filtering device for separating impurities from a liquid, comprising a housing (1), characterized in that: A first support plate (7) and a second support plate (8) are fixed in the box body (1) and are distributed in an upper and lower manner. An intermittently rotatable support column (11) is passed through the second support plate (8). A mounting block (27) is fixed to the upper end of the support column (11). Two shafts (12) that can be reset are rotatably connected to the mounting block (27). A support ring (29) is fixed to the opposite ends of the two shafts (12). A sliding and resettable filter cartridge (13) is passed through the support ring (29). A conical rubber sheet (32) is fixed to the upper end of the filter cartridge (13). A filter membrane (33) is fixed in the filter cartridge (13). A return pipe (9) and a sewage pipe (10) are passed through the second support plate (8). The return pipe (9) and the sewage pipe (10) are respectively arranged opposite to the two filter cartridges (13). The first support plate (7) A first piston cylinder (14) is installed on the support plate (7), the end of the first piston cylinder (14) is fixedly sealed by a sealing plate (44), a first movable piston (36) is slidably connected in the first piston cylinder (14), a second piston cylinder (15) and a third piston cylinder (16) are fixed on the first support plate (7), a driving mechanism is installed in the second piston cylinder (15) and the third piston cylinder (16), the first movable piston (36) reciprocating movement can realize the downward movement of the two driving mechanisms, push the two filter cylinders (13) downward and respectively push against the return pipe (9) and the sewage pipe (10), the filter membrane (33) in the filter cylinder (13) opposite to the return pipe (9) can filter liquid, and the filter cylinder (13) opposite to the sewage pipe (10) is turned (180) degrees, so that the filter membrane (33) in the filter cylinder (13) can be backwashed and cleaned; The bottom of the support column (11) is rotatably connected to the inner bottom of the box body (1) via a damping shaft; a reduction box (17) is installed at the bottom of the second support plate (8); a short shaft (18) is installed at the shaft end of the reduction box (17); a vertical rod (21) is rotatably connected to the inner bottom of the box body (1); a transmission wheel (19) is installed on the vertical rod (21) and the short shaft (18); the two transmission wheels (19) are connected via a belt (20); a first gear (22) is fixed on the vertical rod (21); the first gear (22) is an incomplete gear; a second gear (23) is fixed on the support column (11); the first gear (22) meshes with the second gear (23); It also includes a power mechanism for driving the first movable piston (36) to reciprocate, the power mechanism including a mounting plate fixed on the first support plate (7), a motor (40) being mounted on the mounting plate, an output end of the motor (40) being fixedly connected to a drive shaft (46), a disk (41) being fixed to the drive shaft (46), a connecting rod (48) being hingedly connected to the disk (41), a round rod (45) being fixed to the other end of the connecting rod (48), the round rod (45) penetrating the sealing plate (44) and being slidably connected thereto, and the round rod (45) being fixedly connected to the first movable piston (36); The driving mechanism comprises a second movable piston (49) sliding in a second piston cylinder (15) and a third piston cylinder (16); a movable tube (51) fixedly arranged therethrough is provided on the second movable piston (49); a pressure relief valve (43) is fixed in the movable tube (51); a second spring (50) is fixed between the second movable piston (49) and the second piston cylinder (15) and the third piston cylinder (16); and a rubber plug (52) is fixed at the bottom of the movable tube (51); The invention also comprises a pipeline mechanism for connecting the first piston cylinder (14), the second piston cylinder (15) and the third piston cylinder (16), the pipeline mechanism comprising a first liquid inlet pipe (6) and a first liquid outlet pipe (35) mounted on the first piston cylinder (14); a liquid storage tank (4) and a backwashing water tank (5) are mounted on the box body (1); the first liquid inlet pipe (6) is connected to the liquid storage tank (4), and a first non-return valve (37) is mounted on the first liquid inlet pipe (6); the first liquid outlet pipe (35) is connected to the second piston cylinder (15); a second liquid inlet pipe (38) and a second liquid outlet pipe (39) in communication with the first piston cylinder (14) are mounted through the sealing plate (44); the second liquid inlet pipe (38) is connected to the backwashing water tank (5); a second non-return valve (42) is mounted on the second liquid inlet pipe (38); and the second liquid outlet pipe (39) is connected to the third piston cylinder (16).

2. A filtering device for separating impurities from liquid according to claim 1, characterized in that: A torsion spring (28) is installed between the shaft rod (12) and the mounting block (27).

3. A filtering device for separating impurities from liquid according to claim 1, characterized in that: A fixing ring (30) is fixed on the filter cartridge (13), a first spring (31) is fixed on the fixing ring (30), the other end of the first spring (31) is fixedly connected to the support ring (29), and the first spring (31) is sleeved on the outside of the filter cartridge (13).

4. A filtering device for separating impurities from liquid according to claim 1, characterized in that: It also includes a transmission mechanism for driving the reduction box (17) to rotate, the transmission mechanism including a transmission rod (34) that penetrates the first support plate (7) and the second support plate (8) to rotate, the transmission rod (34) being fixedly connected to the shaft end of the reduction box (17), and bevel gears (47) are installed on the transmission rod (34) and the drive shaft (46), and the two bevel gears (47) are meshed with each other.

5. The filtering device for separating impurities from liquid according to claim 1, characterized in that: It also includes a rotation mechanism for driving the shaft rod (12) to rotate, the rotation mechanism including a support rod (24) fixed on the second support plate (8), an arc-shaped rack plate (25) fixed on the support rod (24), and a transmission gear (26) meshing with the arc-shaped rack plate (25) fixed on the shaft rod (12).

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