A volute pump

Abstract

The present invention belongs to the technical field of volute pumps and relates to a volute pump. The present invention includes a volute pump main body, and a filtering mechanism is arranged in the water inlet on the volute pump main body. The filtering mechanism includes a first connecting seat, a rotating member and a plurality of filter screen assemblies; a fixed ring is fixedly installed in the water inlet, and the first connecting seat is rotatably arranged in the fixed ring. During the operation of the volute pump main body, the first connecting seat rotates, the first connecting seat drives the winding spring to tighten, so that the driving column moves into the rotating cylinder, thereby releasing the limit on the rotating member, and when the winding spring resets and rotates, it drives the rotating member to rotate. Under the action of centrifugal force, the filter screen in the filter screen assembly that is not adsorbed to the connecting disc extends into the cleaning cavity for flushing. During the process of the driving column moving into the rotating cylinder, under the action of the transmission component, the connecting disc rotates, so that the first filter screen assembly and the second filter screen assembly can alternately enter the cleaning cavity for flushing, which is beneficial to improving the filtering efficiency.

Description

Technical Field

[0001] The present invention belongs to the technical field of volute pumps and relates to a volute pump. Background Art

[0002] In a volute pump, the liquid inside the pump rotates in the same direction as the rotating pump casing. After obtaining kinetic energy and pressure energy, it then rushes into a stationary diversion pipeline and outputs work along the diversion pipeline. Generally, the water source contains many impurities. After long-term use, it is easy to cause a large amount of impurities to deposit inside the volute pump, affecting the use of the volute pump.

[0003] Although a filter screen can be arranged inside the volute pump to filter the water source, after long-term use, a large amount of impurities will adhere to the filter screen, affecting the normal operation of the volute pump. Currently, during the use of the volute pump, the filter screen cannot be automatically cleaned and still requires manual control for cleaning, which affects the normal operation of the volute pump.

[0004] To solve the above problems, the present invention proposes a volute pump. Summary of the Invention

[0005] To solve the problems in the background art, the present invention proposes a volute pump.

[0006] To achieve the above object, the technical solution adopted by the present invention is as follows: A volute pump includes a volute pump main body. A filtering mechanism is arranged inside the water inlet on the volute pump main body. The filtering mechanism includes a first connection seat, a rotating member, and a plurality of filter screen assemblies. A fixed ring is fixedly installed inside the water inlet. The first connection seat is rotatably arranged inside the fixed ring. The rotating member is elastically rotatably connected to the first connection seat. A first limiting member is arranged between the rotating member and the fixed ring. An unlocking assembly for releasing the limitation of the rotating member by the first limiting member is arranged on the rotating member. A cleaning cavity is formed on the rotating member. An annular water cavity is formed on the fixed ring. The annular water cavity is communicated with the water outlet on the volute pump main body. Spray holes communicated with the cleaning cavity are formed on the inner wall of the cleaning cavity. Each filter screen assembly includes a sliding plate and a filter screen. The sliding plate is elastically slidably arranged on the rotating member. The sliding plate is fixedly connected to the filter screen. One end of the filter screen is connected with a baffle. The baffle slides into the cleaning cavity. The baffle cooperates with the spray holes. A second limiting member for limiting the sliding plate is arranged on the rotating member.

[0007] Further, the rotating member includes a rotating ring, a second connection seat, and a rotating cylinder. The rotating ring is rotatably connected to the fixed ring. The second connection seat and the rotating ring are fixedly connected through a connecting plate. The rotating cylinder is fixedly connected to the second connection seat. The rotating cylinder is elastically rotatably connected to the first connection seat.

[0008] Further, the first limiting member includes a second piston block which is slidably arranged on the swivel ring, and a clamping groove cooperating with the cleaning cavity is formed on the fixed ring.

[0009] Further, an installation cavity is formed in the first connecting seat, the rotating cylinder is rotatably arranged in the installation cavity, a coil spring is arranged in the rotating cylinder, one end of the coil spring is fixedly connected with the first connecting seat, the other end of the coil spring is fixedly connected with the rotating cylinder, and a driving column for driving the unlocking assembly to move is elastically movably arranged on the rotating cylinder.

[0010] Further, the unlocking assembly includes a first magnet, a guiding tube and a second magnet; the second magnet is elastically slidably arranged in the guiding tube, and the first magnet is fixed at one end of the driving column close to the guiding tube; a liquid cavity communicating with the guiding tube is formed in the second connecting seat, the liquid cavity penetrates through the connecting plate and extends to the swivel ring, and the second piston block is hermetically slidably arranged in the liquid cavity.

[0011] Further, a buffer member is arranged in the liquid cavity, and the buffer member includes a first fixing block; the first fixing block is fixedly arranged in the liquid cavity, a first channel and a second channel are formed in the first fixing block, and a one-way valve is installed in the second channel; the liquid on one side of the first fixing block close to the second magnet can flow to the other side through the one-way valve.

[0012] Further, the second limiting member includes a third magnet and a fourth magnet, a connecting disc is rotatably installed in the second connecting seat, the fourth magnet is fixedly installed on the circumferential surface of the connecting disc, the fourth magnet and the third magnet are adsorbed and cooperated, and a transmission assembly is arranged between the fourth magnet and the driving column.

[0013] Further, the transmission assembly includes a rack, a first gear, a worm and a worm wheel; the connecting disc is fixedly connected with a rotating shaft, the worm wheel is fixedly connected with the rotating shaft, the worm and the worm wheel are meshed, a second fixing block is fixedly connected in the rotating cylinder, the worm is rotatably installed on the second fixing block, the first gear is rotatably installed at one end of the worm through a one-way bearing, and the rack is fixedly connected with the driving column and meshed with the first gear.

[0014] Further, the volute pump main body is installed on the base, a driving motor is installed on the base, the rotating drum in the volute pump main body is connected with the output shaft of the driving motor through a bearing seat, a first bevel gear is fixedly connected to one side of the rotating drum, the first bevel gear is meshed with a second bevel gear, and the second bevel gear is fixedly connected with the first connecting seat; the first bevel gear is annular, and a through hole for liquid to pass through is formed in the second bevel gear.

[0015] Further, the water outlet is communicated with a connecting pipe, a water inlet hole communicating with the connecting pipe is formed on the fixed ring, and the water inlet hole is communicated with the annular water cavity.

[0016] Compared with the prior art, the present invention has the following beneficial effects: During the operation of the volute pump body, the first connecting seat rotates, driving the winding spring to tighten, causing the driving column to move into the rotating cylinder, thereby releasing the limit on the rotating member. When the winding spring resets and rotates, it drives the rotating member to rotate. Under the action of centrifugal force, the filter screen in the filter screen assembly that is not adsorbed to the connecting disk extends into the cleaning chamber for flushing.

[0017] During the movement of the driving column into the rotating cylinder, under the action of the transmission assembly, the connecting disk rotates, thereby switching the filter screen assembly adsorbed to the connecting disk. As a result, the first filter screen assembly and the second filter screen assembly can alternately enter the cleaning chamber for flushing, which is beneficial to improving the filtration efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is the overall structural schematic diagram of the present invention;

[0019] Figure 2 is the partial cross-sectional view of the present invention;

[0020] Figure 3 is in the present invention Figure 2 Enlarged view of part A;

[0021] Figure 4 is the external structural schematic diagram of the filtering mechanism in the present invention;

[0022] Figure 5 is the structural schematic diagram of the second bevel gear in the present invention;

[0023] Figure 6 is the cross-sectional view of the filtering mechanism in the present invention;

[0024] Figure 7 is in the present invention Figure 6 Enlarged view of part B;

[0025] Figure 8 is in the present invention Figure 6 Enlarged view of part C;

[0026] Figure 9 is the structural schematic diagram of the fixing ring in the present invention;

[0027] Figure 10 is the partial cross-sectional view of the fixing ring in the present invention;

[0028] Figure 11 is the structural schematic diagram of the rotating cylinder in the present invention;

[0029] Figure 12 is in the present invention Figure 11 Enlarged view of part D;

[0030] Figure 13 It is a schematic structural view of the driving column in the present invention;

[0031] Figure 14 It is a schematic structural view of the filter assembly in the present invention;

[0032] Figure 15 It is a schematic structural view of the connecting disk in the present invention.

[0033] In the figure: 1, driving motor; 2, bearing seat; 3, volute pump main body; 4, water inlet; 5, water outlet; 6, base; 7, drum; 8, pitot tube; 9, connecting pipe; 10, fixing ring; 11, first bevel gear; 12, second bevel gear; 13, water inlet hole; 14, first connecting seat; 15, coil spring; 16, second connecting seat; 17, filter screen; 18, baffle; 19, first spring; 20, sliding plate; 21, connecting disk; 22, connecting plate; 23, rotating cylinder; 24, driving column; 25, fixing plate; 26, second spring; 27, first magnet; 28, guiding tube; 29, liquid cavity; 30, second magnet; 31, first piston block; 32, third spring; 33, supporting plate; 34, first fixing block; 35, first channel; 36, second channel; 37, worm; 38, second fixing block; 39, worm gear; 40, rotating shaft; 41, rotating ring; 42, second piston block; 43, cleaning cavity; 44, annular water cavity; 45, spray hole; 46, first gear; 47, one-way bearing; 48, rack; 49, third magnet; 50, fourth magnet; 51, liquid discharge port; 52, installation cavity. Detailed implementation manners

[0034] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present invention.

[0035] As Figures 1-15 shown, the technical solution adopted by the present invention is as follows: A volute pump includes a volute pump main body 3 and a filtering mechanism.

[0036] The volute pump main body 3 is installed on the base 6, and a driving motor 1 for driving the volute pump main body 3 to work is installed on the base 6. The output shaft on the driving motor 1 is drivingly connected to the drum 7 in the volute pump main body 3 through the bearing seat 2. The pitot tube 8 in the volute pump main body 3 is communicated with the water outlet 5. The filtering mechanism is arranged in the water inlet 4 on the volute pump main body 3.

[0037] The filtering mechanism includes a rotating member, a first connecting seat 14, and a filter screen assembly. A fixing ring 10 is fixedly installed in the water inlet 4. The first connecting seat 14 is rotatably installed in the fixing ring 10. Specifically, a first bevel gear 11 is fixedly installed on one side of the drum 7. The first bevel gear 11 meshes with a second bevel gear 12, and the second bevel gear 12 is fixedly connected to the first connecting seat 14. The first bevel gear 11 is annular, and the second bevel gear 12 is provided with a through hole for liquid to pass through.

[0038] The rotating member and the first connecting seat 14 are elastically rotatably connected. A first limiting member is arranged between the rotating member and the fixing ring 10. When the first limiting member limits the fixing ring 10, when the first connecting seat 14 rotates, the rotating member does not move. The rotating member is provided with an unlocking assembly for releasing the limitation of the first limiting member on the rotating member. Under the action of the unlocking assembly, after the first limiting member releases the limitation on the rotating member, the first connecting seat 14 can drive the rotating member to rotate.

[0039] The rotating member includes a rotating ring 41, a second connecting seat 16, and a rotating cylinder 23. An installation cavity 52 is provided on the first connecting seat 14, and the rotating cylinder 23 is elastically rotatably installed in the installation cavity 52. A coil spring 15 is arranged in the installation cavity 52. One end of the coil spring 15 is fixedly connected to the rotating cylinder 23, and the other end of the coil spring 15 is fixedly connected to the first connecting seat 14. The rotating cylinder 23 is fixedly connected to the second connecting seat 16, and the second connecting seat 16 is fixedly connected with a connecting plate 22, and the connecting plate 22 is fixedly connected to the rotating ring 41. The rotating ring 41 is rotatably connected to the fixing ring 10. The rotating ring 41, the second connecting seat 16, the rotating cylinder 23, and the first connecting seat 14 are coaxially arranged.

[0040] The filter screen assembly includes a sliding plate 20 and a filter screen 17. In this embodiment, there are four filter screen assemblies, and the four filter screen assemblies are circumferentially evenly distributed according to the axis of the second connecting seat 16.

[0041] Four sliding grooves are provided on the outer circumference of the second connecting seat 16. The four sliding grooves correspond to the four filter screen assemblies one by one, and the sliding plate 20 is elastically slidably arranged in the corresponding sliding groove. Specifically, a spring groove is provided on the inner wall of the sliding groove, and a first spring 19 is arranged in the spring groove. One end of the first spring 19 is fixedly connected to one end wall of the spring groove, and the other end of the first spring 19 is fixedly connected to the sliding plate 20. An installation opening for installing the filter screen 17 is provided on the side of the sliding plate 20 facing away from the axis of the second connecting seat 16, and the filter screen 17 is fixedly arranged in the installation opening. A water passing opening is provided on the connecting plate 22 at a position corresponding to the filter screen 17. The filter screen 17 filters the water flowing through the water passing opening. The sliding plate 20 is slidably matched with the connecting plate 22. A cleaning cavity 43 is provided on the rotating ring 41 at a position corresponding to the filter screen 17, and a through hole adapted to the sliding plate 20 is provided on the cleaning cavity 43. One end of the sliding plate 20 close to the rotating ring 41 extends into the cleaning cavity 43 and is fixedly connected with a baffle 18, and the baffle 18 is slidably arranged in the cleaning cavity 43.

[0042] An annular water chamber 44 is provided on the fixed ring 10. Spray holes 45 communicating with the annular water chamber 44 are provided on the side wall of the cleaning chamber 43. The annular water chamber 44 communicates with the water outlet 5. Specifically, a water inlet hole 13 communicating with the annular water chamber 44 is provided on the fixed ring 10, and a connecting pipe 9 is connected between the water inlet hole 13 and the water outlet 5. One end of the connecting pipe 9 communicates with the water outlet 5, and the other end of the connecting pipe 9 communicates with the water inlet hole 13.

[0043] Initially, under the action of the first spring 19, the filter screen 17 is at the corresponding water passing port, and the baffle 18 blocks the corresponding spray holes 45. Water from the water source enters the rotating drum 7 through the water inlet 4 and the filter screen 17. The filter screen 17 filters impurities in the water to prevent impurities from entering the rotating drum 7. When the rotating member rotates, under the action of centrifugal force, the sliding plate 20 slides towards the cleaning chamber 43 against the elastic force of the first spring 19, causing the filter screen 17 to enter the cleaning chamber 43. The sliding plate 20 blocks the water passing port, and the spray holes 45 are opened. Water in the water outlet 5 enters the annular water chamber 44 through the connecting pipe 9. The water in the annular water chamber 44 is sprayed onto the filter screen 17 through the spray holes 45 to perform reverse flushing on the filter screen 17 and flush the filter screen 17 clean. And at this time, the sliding plate 20 blocks the through hole, so that the water in the cleaning chamber 43 will not flow out through the through hole.

[0044] It should be noted that the filter screen 17 is installed in the sliding plate 20. When the filter screen 17 moves into the cleaning chamber 43, the filter screen 17 does not contact the inner wall of the through hole, so as to prevent the inner wall of the through hole from scraping off the impurities on the filter screen 17.

[0045] A liquid discharge port 51 communicating with the outside is provided on the rotating ring 41. The rinsed water is discharged through the liquid discharge port 51.

[0046] A second limiting member is provided between the sliding plate 20 and the second connecting seat 16. The second limiting member includes a third magnet 49 and a fourth magnet 50. A rotating chamber communicating with the sliding groove is provided on the second connecting seat 16. A connecting disk 21 is rotatably installed in the rotating chamber. Two fourth magnets 50 are symmetrically installed on the outer circumference of the connecting disk 21. A third magnet 49 is fixedly connected to one end of each sliding plate 20 close to the connecting disk 21. The third magnet 49 and the fourth magnet 50 are adsorbed and matched. The connecting disk 21 adsorbs two of the sliding plates 20 through the fourth magnets 50. When the rotating member rotates, the sliding plates 20 not adsorbed to the connecting disk 21 slide into the corresponding cleaning chambers 43 under the action of centrifugal force. The sliding plates 20 adsorbed to the connecting disk 21 remain in the sliding grooves, and the corresponding filter screens 17 remain at the water passing ports, so that the volute pump main body 3 can continue to operate.

[0047] Rotate the connection plate 21 relative to the second connection seat 16. The fourth magnet 50 rotates with the connection plate 21, so that different sliding plates 20 are adsorbed onto the connection plate 21. Thus, the filter screen 17 can be alternately flushed while the spiral casing pump body 3 is continuously operating, which is beneficial to improving the filtration efficiency.

[0048] A driving column 24 is elastically slidably arranged on the rotating cylinder 23. The sliding direction of the driving column 24 is perpendicular to the axis of the rotating cylinder 23. Specifically, a sliding hole is formed in the rotating cylinder 23, and the driving column 24 is slidably arranged in the sliding hole. A receiving groove is formed in the driving column 24. A fixing plate 25 is fixedly connected to the rotating cylinder 23, and the fixing plate 25 extends into the receiving groove in the driving column 24. The fixing plate 25 is slidably matched with the receiving groove. A second spring 26 is arranged in the receiving groove. One end of the second spring 26 is fixedly connected to the fixing plate 25, and the other end of the second spring 26 is fixedly connected to the end wall of the receiving groove. Under the action of the second spring 26, one end of the driving column 24 extends outside the rotating cylinder 23.

[0049] A transmission assembly is arranged between the driving column 24 and the connection plate 21. When the driving column 24 slides into the rotating cylinder 23 along the sliding hole, the driving column 24 drives the connection plate 21 to rotate relative to the second connection seat 16 through the transmission assembly, and the connection plate 21 drives the fourth magnet 50 to rotate relative to the second connection seat 16, so that the fourth magnet 50 adsorbs to different sliding plates 20.

[0050] The transmission assembly includes a rack 48, a first gear 46, a worm 37 and a worm gear 39. The connection plate 21 is fixedly connected with a rotating shaft 40, and the rotating shaft 40 rotatably penetrates through the second connection seat 16 and then extends into the installation cavity 52. A second fixing block 38 is fixedly installed in the rotating cylinder 23, and the worm 37 is rotatably installed on the second fixing block 38. One end of the rotating shaft 40 extending into the installation cavity 52 is fixedly connected with the worm gear 39. The worm gear 39 and the worm 37 are meshed. The first gear 46 is rotatably installed at one end of the worm 37 through a one-way bearing 47. Specifically, the inner ring of the one-way bearing 47 is fixedly connected with the worm 37, and the outer ring of the one-way bearing 47 is fixedly connected with the first gear 46. The driving column 24 is fixedly connected with the rack 48, and the rack 48 and the first gear 46 are meshed.

[0051] The coil spring 15 gradually tightens, thereby gradually pressing the driving column 24, causing the driving column 24 to move into the rotating cylinder 23. The rack 48 drives the first gear 46 to rotate. The first gear 46 drives the worm 37 to rotate through the one-way bearing 47. The worm 37 drives the worm gear 39 to rotate, and then the rotating shaft 40 rotates. The rotating shaft 40 drives the connecting disk 21 to rotate relative to the second connecting seat 16. When the coil spring 15 gradually unfolds and releases the extrusion on the driving column 24, the driving column 24 moves out of the rotating cylinder 23. The rotating cylinder 23 drives the rack 48 to move. The rack 48 drives the first gear 46 to rotate, causing the outer ring of the one-way bearing 47 to rotate relative to the inner ring, and then the connecting disk 21 remains stationary relative to the second connecting seat 16.

[0052] A first limiting member is provided between the rotating ring 41 and the fixed ring 10. The first limiting member includes a second piston block 42. The second piston block 42 is slidably arranged on the rotating ring 41. A clamping groove cooperating with the second piston block 42 is formed on the fixed ring 10. When the second piston block 42 is inserted into the clamping groove, the second piston block 42 limits the rotating ring 41, making the rotating ring 41 unable to rotate relative to the fixed ring 10. When the first connecting seat 14 rotates, under the action of the second piston block 42, the rotating member cannot rotate accordingly. Thus, the first connecting seat 14 rotates relative to the rotating cylinder 23, causing the coil spring 15 to gradually tighten. When the fixed ring 10 is disengaged from the clamping groove, the coil spring 15 resumes deformation, causing the rotating cylinder 23 to rotate relative to the first connecting seat 14, and the rotating direction of the rotating cylinder 23 relative to the first connecting seat 14 is opposite to the rotating direction of the first connecting seat 14. The rotating cylinder 23 drives the second connecting seat 16 and the rotating ring 41 to rotate. At this time, two of the sliding plates 20 are adsorbed on the connecting disk 21, and the other two sliding plates 20 are not adsorbed on the connecting disk 21. Under the action of centrifugal force, the sliding plates 20 not adsorbed on the connecting disk 21 slide out of the sliding groove, causing the filter screen 17 to enter the corresponding cleaning cavity 43. The baffle 18 releases the blockage of the spray holes 45. Thus, the water in the annular water cavity 44 is sprayed onto the filter screen 17 through the spray holes 45 to wash the filter screen 17 and wash away the impurities on the filter screen 17. The filter screen 17 on the sliding plate 20 adsorbed on the connecting disk 21 still blocks the corresponding water inlet, maintaining the filtration of the water entering the drum 7.

[0053] An unlocking assembly is provided on the rotating member. Under the action of the unlocking assembly, the limitation of the first limiting member on the rotating member is released, enabling the rotating member to rotate relative to the fixed ring 10.

[0054] The unlocking component includes a first magnet 27, a guiding tube 28, and a second magnet 30. The guiding tube 28 is fixed within the rotating cylinder 23, and the axes of the guiding tube 28 and the driving column 24 are on the same straight line. A first piston block 31 is slidably and sealingly arranged within the guiding tube 28. The second magnet 30 is fixed to one end of the first piston block 31 close to the driving column 24. A support plate 33 is fixedly connected within the guiding tube 28, and a third spring 32 is fixedly connected between the support plate 33 and the first piston block 31. Both ends of the guiding tube 28 are open. The first magnet 27 is fixed at one end of the driving column 24 close to the guiding tube 28. The first magnet 27 and the guiding tube 28 are magnetically engaged.

[0055] A liquid cavity 29 is formed on the second connecting seat 16. One end of the liquid cavity 29 communicates with the guiding tube 28, and the other end of the liquid cavity 29 extends into the rotating ring 41 after passing through the connecting plate 22. A second piston block 42 is slidably and sealingly arranged within the rotating ring 41. The liquid cavity 29 is filled with liquid.

[0056] The driving column 24 moves into the rotating cylinder 23 and gradually approaches the guiding tube 28, causing the first magnet 27 to gradually approach the second magnet 30. Under the attraction of the first magnet 27, the second magnet 30 drives the first piston block 31 to move away from the support plate 33 against the elastic force of the third spring 32, and the second magnet 30 moves away from the liquid cavity 29. This causes the liquid within the liquid cavity 29 to flow into the guiding tube 28, and further causes the second piston block 42 to move into the rotating ring 41, disengaging the second piston block 42 from the card slot on the fixed ring 10, thereby releasing the limit on the rotating ring 41. When the driving column 24 moves towards the rotating cylinder 23, the first magnet 27 gradually moves away from the second magnet 30, and the suction force of the first magnet 27 on the second magnet 30 gradually decreases. Then, under the action of the third spring 32, the first piston block 31 moves close to the liquid cavity 29, and the liquid within the guiding tube 28 enters the liquid cavity 29, causing the second piston block 42 to gradually move out of the rotating ring 41.

[0057] A buffer member is arranged within the liquid cavity 29. The buffer member includes a first fixing block 34, which is fixedly arranged within the liquid cavity 29 on the second connecting seat 16. The first fixing block 34 is provided with a first channel 35 and a second channel 36. The inner diameter of the first channel 35 is smaller than that of the second channel 36. A one-way valve is installed within the second channel 36. When the second magnet 30 moves away from the liquid cavity 29, the liquid within the liquid cavity 29 flows into the guiding tube 28, in the Figure 7 direction shown. The liquid on the left side of the first fixing block 34 flows through the first channel 35 and the second channel 36 to the right side of the first fixing block 34, thereby enabling the second piston block 42 to quickly disengage from the card slot on the fixed ring 10. When the second magnet 30 moves close to the liquid cavity 29, the liquid within the guiding tube 28 flows into the liquid cavity 29, in the Figure 7In the shown direction, the liquid on the right side of the first fixing block 34 flows through the first channel 35 to the left side of the first fixing block 34, thereby causing the second piston block 42 to slowly move outward from the swivel ring 41. As a result, the corresponding filter screen 17 has sufficient time to be inside the first fixing block 34 for flushing. When the second piston block 42 is inserted into the card slot, the rotating member stops rotating, and the filter screen 17 in the cleaning chamber 43 moves toward the second connecting seat 16 under the action of the corresponding first spring 19, thereby moving the filter screen 17 to the corresponding water passing port.

[0058] Working principle: Initially, under the action of the second spring 26, one end of the driving column 24 extends outside the rotating cylinder 23. The torsion spring 15 is in a natural state, and the second piston block 42 extends into the card slot. The filter screen 17 is at the water passing port. The baffle 18 blocks the corresponding spray holes 45. For the convenience of description, the four filter screen assemblies are respectively named the first filter screen assembly and the second filter screen assembly. There are two first filter screen assemblies, and the two first filter screen assemblies are symmetrically arranged. There are two second filter screen assemblies, and the two second filter screen assemblies are symmetrically arranged. The first filter screen assembly is adsorbed to the connecting disk 21, and the second filter screen assembly is not adsorbed to the connecting disk 21.

[0059] During the working process of the volute pump body 3, the water in the water source enters the rotating drum 7 through the water inlet 4 and the filter screen 17, and the water in the rotating drum 7 enters the water outlet 5 through the pitot tube 8, and then is discharged through the water outlet 5.

[0060] The driving motor 1 drives the rotating drum 7 to rotate, the rotating drum 7 drives the first bevel gear 11 to rotate, the first bevel gear 11 drives the second bevel gear 12 to rotate, and the second bevel gear 12 drives the first connecting seat 14 to rotate. Under the limit of the second piston block 42, the rotating member cannot rotate relative to the fixed ring 10, and thus the torsion spring 15 is gradually tightened. As the torsion spring 15 is tightened, the torsion spring 15 presses inward on the driving column 24, causing the driving column 24 to move into the rotating cylinder 23.

[0061] When the driving column 24 moves into the rotating cylinder 23, the driving column 24 drives the rack 48 to move, the rack 48 drives the first gear 46 to rotate, the first gear 46 drives the worm 37 to rotate through the one-way bearing 47, the worm 37 drives the worm wheel 39 to rotate, causing the rotating shaft 40 to rotate, and the rotating shaft 40 drives the connecting disk 21 to rotate relative to the second connecting seat 16. The connecting disk 21 drives the fourth magnet 50 to rotate, and thus the fourth magnet 50 is gradually staggered from the third magnet 49 in the first filter screen assembly. When the end of the driving column 24 away from the guide tube 28 is flush with the outer surface of the rotating cylinder 23, the driving column 24 stops moving into the rotating cylinder 23. At this time, the fourth magnet 50 is opposite to the third magnet 49 in the second filter screen assembly, and the sliding plate 20 in the second filter screen assembly is adsorbed to the connecting disk 21, and the sliding plate 20 in the first filter screen assembly is not adsorbed to the connecting disk 21.

[0062] When the drive column 24 moves inside the inner rotating cylinder 23, the first magnet 27 gradually approaches the guide tube 28, causing the attractive force of the first magnet 27 on the second magnet 30 to gradually increase. Under the attraction of the first magnet 27, the second magnet 30 moves towards the drive column 24 against the elastic force of the third spring 32, and the first piston block 31 moves away from the liquid chamber 29. As a result, the liquid in the liquid chamber 29 flows into the guide tube 28, and then the second piston block 42 moves into the rotating ring 41, and the second piston block 42 disengages from the card slot on the fixed ring 10. The liquid in the liquid chamber 29 flows into the guide tube 28 through the first channel 35 and the second channel 36, enabling the second piston block 42 to quickly disengage from the card slot on the fixed ring 10, thereby releasing the limit on the rotating part.

[0063] After the second piston block 42 disengages from the card slot on the fixed ring 10, the torsion spring 15 resumes deformation and drives the rotating cylinder 23 to rotate in the reverse direction. The second connecting seat 16, the rotating ring 41, the sliding plate 20, the filter screen 17, and the connecting disk 21 all rotate with the rotating cylinder 23. Under the action of centrifugal force, the first filter screen assembly slides out of the sliding groove against the elastic force of the first spring 19. In the first filter screen assembly, the filter screen 17 slides into the corresponding cleaning chamber 43, the baffle 18 slides into the cleaning chamber 43 to release the blockage of the spray holes 45, and when the filter screen 17 moves into the cleaning chamber 43, the sliding plate 20 blocks the corresponding water inlet. The water in the water outlet 5 enters the annular water chamber 44 through the connecting pipe 9 and the water inlet hole 13. The water in the annular water chamber 44 is sprayed onto the filter screen 17 through the spray holes 45 to backwash the filter screen 17, cleaning the filter screen 17, which is beneficial to ensuring the filtering efficiency of the filter screen 17. The water rinsed in the cleaning chamber 43 is discharged through the drain port 51.

[0064] Since the sliding plate 20 in the second filter screen assembly is adsorbed on the connecting disk 21, the sliding plate 20 in the second filter screen assembly remains in the corresponding sliding groove, the filter screen 17 in the second filter screen assembly still blocks the corresponding water inlet, and the filter screen 17 in the second filter screen assembly continues to filter the water, enabling the volute pump main body 3 to continue operating.

[0065] As the torsion spring 15 resumes deformation, the torsion spring 15 releases the extrusion on the drive column 24. Under the action of the second spring 26, the drive column 24 moves out of the rotating cylinder 23.

[0066] When the drive column 24 moves out of the rotating cylinder 23, the drive column 24 drives the rack 48 to move, and the rack 48 drives the first gear 46 to rotate. Under the action of the one-way bearing 47, the first gear 46 does not drive the worm 37 to rotate, and the rotating shaft 40 and the connecting disk 21 do not rotate relative to the second connecting seat 16. As a result, the sliding plate 20 in the second filter screen assembly remains adsorbed on the connecting disk 21, and the sliding plate 20 in the first filter screen assembly is not adsorbed on the connecting disk 21.

[0067] As the drive post 24 moves outward from the rotary cylinder 23, the first magnet 27 moves away from the guide tube 28, and the attraction of the first magnet 27 to the second magnet 30 gradually decreases. Under the action of the third spring 32, the first piston block 31 gradually moves closer to the liquid chamber 29, causing the liquid in the guide tube 28 to flow into the liquid chamber 29. The liquid on the right side of the first fixed block 34 flows to the left side of the first fixed block 34 through the first channel 35. And the liquid slowly flows to the left side of the first fixed block 34, thereby causing the second piston block 42 to slowly move outside the rotary ring 41. So that the filter screen 17 in the first filter assembly has sufficient time to be in the cleaning chamber 43, which is conducive to flushing the filter screen 17 in the first filter assembly clean.

[0068] As the rotating member rotates and the second piston block 42 gradually moves outside the rotary ring 41, the second piston block 42 will be inserted into the rotary ring 41 again. When the second piston block 42 is inserted into the rotary ring 41, the rotating member stops rotating. The sliding plate 20 in the first filter assembly returns to the sliding groove, and the corresponding filter screen 17 returns to the water passing port for filtering work, and the corresponding baffle 18 seals the spray hole 45.

[0069] After that, as the first connecting seat 14 rotates, the first connecting seat 14 drives the winding spring 15 to gradually tighten, and the winding spring 15 presses the drive post 24 again, causing the drive post 24 to move into the rotary cylinder 23. The drive post 24 drives the connecting disk 21 to rotate through the transmission assembly, and then the connecting disk 21 adsorbs the first filter assembly, and the second filter assembly loses the adsorption of the connecting disk 21.

[0070] At the same time, as the drive post 24 moves into the rotary cylinder 23, under the action of the unlocking assembly, the second piston block 42 disengages from the card slot on the fixed ring 10. The winding spring 15 resumes deformation and drives the rotary cylinder 23, the second connecting seat 16 and the rotary ring 41 to rotate in the reverse direction. Under the action of centrifugal force, the sliding plate 20 in the second filter assembly moves outside the sliding groove, and the corresponding two filter screens 17 move into the cleaning chamber 43 for flushing. The filter screen 17 in the first filter assembly continues to perform the filtering work.

[0071] In this way, as the volute pump main body 3 operates, the first filter assembly and the second filter assembly alternately enter the cleaning chamber 43 for flushing, which is beneficial to improving the filtering efficiency and does not affect the normal operation of the volute pump main body 3.

[0072] Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A volute pump, comprising a volute pump main body (3), characterized in that: A filtering mechanism is arranged in the water inlet (4) on the volute pump body (3). The filtering mechanism includes a first connecting seat (14), a rotating member, and a plurality of filter screen assemblies. A fixing ring (10) is fixedly installed in the water inlet (4). The first connecting seat (14) is rotatably arranged in the fixing ring (10). The rotating member is elastically rotatably connected to the first connecting seat (14). A first limiting member is arranged between the rotating member and the fixing ring (10). An unlocking assembly for releasing the limitation of the first limiting member on the rotating member is arranged on the rotating member. A cleaning cavity (43) is formed in the rotating member. An annular water cavity (44) is formed in the fixing ring (10). The annular water cavity (44) is communicated with the water outlet (5) on the volute pump body (3). Spray holes (45) communicated with the cleaning cavity (43) are formed in the inner wall of the cleaning cavity (43). Each filter screen assembly includes a sliding plate (20) and a filter screen (17). The sliding plate (20) is elastically slidably arranged on the rotating member. The sliding plate (20) is fixedly connected to the filter screen (17). One end of the filter screen (17) is connected with a baffle (18). The baffle (18) slidably extends into the cleaning cavity (43). The baffle (18) cooperates with the spray holes (45). A second limiting member for limiting the sliding plate (20) is arranged on the rotating member. The rotating member includes a rotating ring (41), a second connecting seat (16), and a rotating cylinder (23). The rotating ring (41) is rotatably connected to the fixing ring (10). The second connecting seat (16) and the rotating ring (41) are fixedly connected through a connecting plate (22). The rotating cylinder (23) is fixedly connected to the second connecting seat (16). The rotating cylinder (23) is elastically rotatably connected to the first connecting seat (14). The first limiting member includes a second piston block (42). The second piston block (42) is slidably arranged on the rotating ring (41). A clamping groove cooperating with the cleaning cavity (43) is formed in the fixing ring (10). An installation cavity (52) is formed in the first connecting seat (14). The rotating cylinder (23) is rotatably arranged in the installation cavity (52). A coil spring (15) is arranged in the rotating cylinder (23). One end of the coil spring (15) is fixedly connected to the first connecting seat (14). The other end of the coil spring (15) is fixedly connected to the rotating cylinder (23). A driving column (24) for driving the unlocking assembly to move is elastically movably arranged on the rotating cylinder (23).

2. The volute pump according to claim 1, wherein: The unlocking assembly includes a first magnet (27), a guiding tube (28), and a second magnet (30). The second magnet (30) is elastically slidably arranged in the guiding tube (28). The first magnet (27) is fixed to one end of the driving column (24) close to the guiding tube (28). A liquid cavity (29) communicated with the guiding tube (28) is formed in the second connecting seat (16). The liquid cavity (29) penetrates through the connecting plate (22) and extends to the rotating ring (41). The second piston block (42) is hermetically slidably arranged in the liquid cavity (29).

3. The volute pump according to claim 2, characterized in that: A buffer member is disposed in the liquid chamber (29). The buffer member includes a first fixing block (34). The first fixing block (34) is fixedly disposed in the liquid chamber (29). A first channel (35) and a second channel (36) are formed in the first fixing block (34). A one-way valve is installed in the second channel (36). The liquid on one side of the first fixing block (34) close to the second magnet (30) can flow to the other side through the one-way valve.

4. The volute pump according to claim 1, characterized in that: The second limiting member includes a third magnet (49) and a fourth magnet (50). A connecting disk (21) is rotatably installed in the second connecting seat (16). The fourth magnet (50) is fixedly installed on the circumferential surface of the connecting disk (21). The fourth magnet (50) is adsorbed and matched with the third magnet (49). A transmission assembly is disposed between the fourth magnet (50) and the driving column (24).

5. The volute pump according to claim 4, wherein: The transmission assembly includes a rack (48), a first gear (46), a worm (37) and a worm gear (39). The connecting disk (21) is fixedly connected with a rotating shaft (40). The worm gear (39) is fixedly connected with the rotating shaft (40). The worm (37) is meshed with the worm gear (39). A second fixing block (38) is fixedly connected in the rotating cylinder (23). The worm (37) is rotatably installed on the second fixing block (38). The first gear (46) is rotatably installed at one end of the worm (37) through a one-way bearing (47). The rack (48) is fixedly connected with the driving column (24) and meshed with the first gear (46).

6. The volute pump according to claim 1, wherein: The volute pump main body (3) is installed on the base (6). A driving motor (1) is installed on the base (6). The drum (7) in the volute pump main body (3) is connected with the output shaft of the driving motor (1) through a bearing seat (2). A first bevel gear (11) is fixedly connected to one side of the drum (7). The first bevel gear (11) is meshed with a second bevel gear (12). The second bevel gear (12) is fixedly connected with the first connecting seat (14). The first bevel gear (11) is annular. A through hole for liquid to pass through is formed in the second bevel gear (12).

7. The volute pump according to claim 1, characterized in that: The water outlet (5) is communicated with a connecting pipe (9). A water inlet hole (13) communicated with the connecting pipe (9) is formed in the fixing ring (10). The water inlet hole (13) is communicated with the annular water chamber (44).

Images