A centrifugal pump structure with filter blocking prevention

Abstract

The present invention relates to the technical field of centrifugal pumps, and specifically to a centrifugal pump structure with anti-filter clogging, comprising a centrifugal pump body, a power shaft of the centrifugal pump body fixedly connected to an impeller, an outer wall of a connecting seat fixedly connected to a filter housing, an outer wall of the filter housing connected to a disc housing, an outer wall of a driving shaft fixedly connected to a main bidirectional threaded rod, and a filter plate provided below a rotating disc. The present invention can drive a reciprocating slag storage mechanism to intermittently store impurities on the surface of the filter plate through the rotation of the centrifugal pump body itself, and at the same time drive the opening and closing of a sealing mechanism. The opening and closing of the sealing mechanism can drive the dual-purpose mechanism to continuously rotate when water is flowing to prevent impurities from clogging the filter plate. When storing slag, the limiting mechanism cooperates to make the four dual-purpose plates form a plane, which can limit the movement of impurities and pile up the impurities together. There is no need to set up other driving structures, and impurities in the water can be intermittently stored and collected.

Description

Technical Field

[0001] The present invention relates to the technical field of centrifugal pumps, and in particular to a centrifugal pump structure with filter blocking prevention. Background Art

[0002] Centrifugal pumps operate by centrifugally moving water through the rotation of the impeller. Before starting the pump, the pump casing and suction pipe must be filled with water. The motor is then started, causing the pump shaft to drive the impeller and water into high-speed rotation. This centrifugal motion causes the water to be flung toward the outer edge of the impeller, flowing through the flow channel of the volute pump casing into the pump's pressure water line. Pumps are primarily used in areas such as domestic water supply, mine rescue, farmland irrigation, seawater lifting, and ship load regulation. Water often carries various plankton, sand, and other debris. Once these debris enter the pump, they not only affect the pump's efficiency but can also damage key components such as the impeller and bearings. Therefore, pumps that draw water from rivers are typically equipped with a filter at the water inlet of their suction pipe.

[0003] The patent with authorization announcement number CN118462666B discloses a water inlet filter and water pump, wherein the water inlet filter includes a water inlet pipe and a filter cover; a cleaning rod is rotatably installed on the surface of the filter cover; an energy storage mechanism is used to drive the cleaning rod; wherein the energy storage mechanism includes: a power assembly having a power shaft rotatably installed in the filter cover, the input end of the power shaft is fixed with fan blades located in the water inlet pipe; a reduction gear assembly is connected to the output end of the power shaft; the energy storage assembly is connected to the output end of the reduction gear assembly, and the output end of the energy storage assembly is connected to the cleaning rod.

[0004] However, the above invention patent still has some shortcomings in actual use: 1. After the first-stage gear set and the second-stage gear set are set to slow down, the transmission sleeve at the second end outputs power to the energy storage assembly; the transmission sleeve drives the rotating sleeve in the energy storage assembly to compress the mainspring; at a certain moment after the transmission sleeve rotates multiple times, the paddle in the intermittent control mechanism moves the transmission sleeve to separate the transmission sleeve from the rotating sleeve; the mainspring rebounds and drives the third shaft, and the third shaft drives the cleaning rod; when the cleaning rod rotates, it cooperates with the cleaning head to clean the debris attached to the outside of the filter cover; through the above series of transmissions, only the effect of the cleaning head intermittently rotating one circle is achieved, however, due to the negative pressure of the water pump, the impurities are temporarily separated from the filter cover, but will still be adsorbed back by the negative pressure, so that the impurities outside the filter cover will become more and more, and the blockage problem cannot be fundamentally solved. Therefore, a centrifugal pump structure with anti-filter blockage is proposed to solve the above-mentioned problem. Summary of the Invention

[0005] The purpose of the present invention is to solve the problems in the background technology and to propose a centrifugal pump structure with anti-filter clogging.

[0006] In order to achieve the above object, the present invention adopts the following technical solutions:

[0007] A centrifugal pump structure with anti-filter clogging includes a centrifugal pump body, a power shaft of the centrifugal pump body is fixedly connected to an impeller, an outer wall of the impeller is fixedly connected to a connecting shaft, an inner wall of the connecting shaft is plugged with a cross plug, an outer wall of the cross plug is fixedly connected to a driving shaft, an outer wall of the driving shaft is rotatably connected to a limiting bracket, an outer wall of the limiting bracket is fixedly connected to a connecting seat, the connecting seat and the centrifugal pump body are connected by screws, an outer wall of the connecting seat is fixedly connected to a filter housing, an outer wall of the filter housing is connected to a disc housing, a water pipe connector is fixedly connected to the top of the filter housing, an outer wall of the driving shaft is fixedly connected to a main bidirectional threaded rod, an inner wall of the disc housing is rotatably connected to a rotating disk, a filter plate is provided below the rotating disk, and the filter plate is fixedly connected to the inner wall of the filter housing, and further includes:

[0008] The dual-purpose mechanism is used to ensure the water permeability of the filter plate when water is flowing, and to prevent impurities from escaping into the water when collecting impurities. The dual-purpose mechanism is installed on the rotating disk;

[0009] The sealing mechanism is used to ensure the tightness of the filter housing when water flows. The sealing mechanism is installed on the rotating disk;

[0010] The limiting mechanism is used to cooperate with the sealing mechanism to form a complete plane when the dual-purpose mechanism collects impurities. The limiting mechanism is installed on the sealing mechanism;

[0011] And a reciprocating slag storage mechanism is used to cooperate with the rotation of the main bidirectional threaded rod so that the rotating disk can intermittently reciprocate, thereby intermittently collecting impurities.

[0012] Preferably, a connecting shell is fixedly connected between the filter housing and the disc housing, the bottom of the disc housing is connected to a slag storage chamber, the outer wall of the slag storage chamber is provided with a door panel, the door panel is connected to the slag storage chamber by screws, the outer wall of the main bidirectional threaded rod is threadedly connected to a sliding block, the inner wall of the sliding block is slidably connected to a limiting rod 1, the limiting rod 1 is fixedly connected to the filter housing, the end of the main bidirectional threaded rod away from the driving shaft is fixedly connected to a first shaft rod, and the first shaft rod is rotatably connected to the filter housing.

[0013] Preferably, the sealing mechanism includes a sealing rack, an upper moving disk, two connecting rods 2, two supporting frames, two sealing strips, two supporting gears and two supporting racks, the sealing rack is fixedly connected to the sliding block, the sealing rack is meshed with one of the supporting gears, the two supporting gears are fixedly connected by a set shaft rod, the two supporting gears are rotatably connected to the connecting shell by a set shaft rod, the two supporting racks are slidably connected to the connecting shell, the two supporting racks are respectively meshed with the two supporting gears, the two supporting racks are both slidably connected to the upper moving disk, the upper moving disk is arranged inside the connecting shell, the two connecting rods 2 are fixedly connected to the upper moving disk, the ends of the two connecting rods 2 are both fixedly connected to the two supporting frames, the two supporting frames are respectively fixedly connected to the two sealing strips, and the two sealing strips are both slidably connected to the rotating disk.

[0014] Preferably, the reciprocating slag storage mechanism includes a second limit rod, a main shaft rod, a reciprocating shaft, a first slider, a secondary bidirectional threaded rod, a reciprocating rack, a ratchet assembly and a second slider, the reciprocating rack is fixedly connected to the sliding block, the secondary bidirectional threaded rod is rotatably connected to the connecting shell, the second slider is threadedly connected to the outer wall of the secondary bidirectional threaded rod, one side outer wall of the ratchet assembly is fixedly connected to the secondary bidirectional threaded rod, the other side outer wall of the ratchet assembly is meshed with the reciprocating rack, the first slider is fixedly connected to the second slider, the first slider is slidably connected to the reciprocating shaft through a spiral groove, the reciprocating shaft is fixedly connected to the main shaft rod, the main shaft rod is fixedly connected to the rotating disk, the second limit rod is fixedly connected to the connecting shell, and the outer wall of the second limit rod is slidably connected to the second slider.

[0015] Preferably, the dual-purpose mechanism includes a transfer frame, a connecting cavity, a first chain, four dual-purpose plates, four second shafts and four second gears. The connecting cavity is fixedly connected to the main shaft, the connecting cavity is fixedly connected to the transfer frame, the four second shafts are rotatably connected to the transfer frame, the four dual-purpose plates are respectively fixedly connected to the four second shafts, the four second gears are respectively fixedly connected to the four dual-purpose plates, and the first chain is sleeved on the outer walls of the four second gears.

[0016] Preferably, the dual-purpose mechanism also includes a first sliding rod, a first fixed rod, a first sliding rail, a first spring, a third shaft rod, a first rack and two first gears, the first sliding rod is rotatably connected to the sealing bar, the outer wall of the first sliding rod is slidably connected to the first fixed rod, the two ends of the first spring are respectively fixedly connected to the first sliding rod and the first fixed rod, the first fixed rod is rotatably connected to the first rack, the first slide rail is fixedly connected to the transfer frame, the first rack is slidably connected to the first slide rail, the third shaft rod is rotatably connected to the transfer frame, and the two first gears are fixed at both ends of the third shaft rod, one of the first gears is meshed with the first rack, and the other first gear is movably connected to the first chain.

[0017] Preferably, two sealing mechanisms are provided, the two sealing mechanisms are symmetrically distributed, and a water-permeable groove is provided on the outer wall of the rotating disk.

[0018] Preferably, the limiting mechanism includes a sloped baffle and two second springs, the sloped baffle is fixedly connected to the transfer frame, the two second springs are fixedly connected to both sides of the sloped baffle, and one end of the two second springs away from the sloped baffle is fixedly connected to the inner wall of the transfer frame. There are eight limiting mechanisms, and a limiting mechanism is provided above each dual-purpose plate.

[0019] Compared with the existing technology, the advantages of this centrifugal pump structure with anti-filter clogging are:

[0020] The present invention can drive the reciprocating slag storage mechanism to intermittently store impurities on the surface of the filter plate through the rotation of the centrifugal pump body itself, and at the same time drive the opening and closing of the sealing mechanism. The opening and closing of the sealing mechanism can drive the dual-purpose mechanism to rotate continuously when water is flowing to prevent impurities from clogging the filter plate. When storing slag, the limiting mechanism is cooperated to make the four dual-purpose plates form a plane, which can limit the movement of impurities and pile up the impurities together. There is no need to set up other driving structures, and impurities in the water are intermittently stored and collected. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0022] Figure 2 It is a structural schematic diagram of the impeller of the centrifugal pump of the present invention;

[0023] Figure 3 It is a schematic diagram of the internal structure of the disc shell of the present invention;

[0024] Figure 4 It is a schematic diagram of the structure inside the filter housing of the present invention;

[0025] Figure 5 It is a structural diagram of the transfer frame of the present invention;

[0026] Figure 6 This invention Figure 5 A schematic diagram of the partially enlarged structure at center A;

[0027] Figure 7 It is a schematic diagram of the structure inside the transfer frame of the present invention;

[0028] Figure 8 This invention Figure 7 A schematic diagram of the partially enlarged structure at point B in the middle;

[0029] Figure 9 This is a partial structural diagram of the reciprocating slag storage mechanism of the present invention;

[0030] Figure 10 This invention Figure 9 A schematic diagram of the partially enlarged structure at point C in the middle;

[0031] Figure 11 It is a structural schematic diagram of the connection between the supporting rack and the upward moving plate of the present invention.

[0032] In the figure: 1. Centrifugal pump body; 2. Filter housing; 3. Connecting seat; 4. Water pipe connector; 5. Disc housing; 6. Cross plug; 7. Connecting shaft; 8. Impeller; 9. Limit bracket; 10. Drive shaft; 11. Dual-purpose plate; 12. Sealing strip; 13. Transfer frame; 14. Water-permeable trough; 15. Connecting chamber; 16. Rotating disc; 17. Limiting rod 1; 18. Residue chamber; 19. Main bidirectional threaded rod; 20. Filter plate; 21. First shaft; 22. Connecting housing; 23. Inclined baffle; 24. Support frame; 25. Second shaft; 26. First slide bar; 27. First fixing rod; 28. First slide rail. 29. First spring; 30. Third shaft; 31. First gear; 32. First rack; 33. Second gear; 34. First chain; 35. Second spring; 36. Second connecting rod; 37. Door panel; 38. Second limiting rod; 39. Main shaft; 40. Support rack; 41. Support gear; 42. Reciprocating shaft; 43. Sealing rack; 44. Sliding block; 45. First slider; 46. Second bidirectional threaded rod; 47. Ratchet assembly; 48. Reciprocating rack; 49. Upper plate; 50. Second slider; 101. Dual-purpose mechanism; 202. Sealing mechanism; 303. Limiting mechanism; 404. Reciprocating slag storage mechanism. DETAILED DESCRIPTION

[0033] The technical solutions in the embodiments of the present invention will be clearly and completely described 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.

[0034] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as limiting the present invention.

[0035] Reference Figures 1-11, a centrifugal pump structure with anti-filter clogging, including a centrifugal pump body 1, a power shaft of the centrifugal pump body 1 is fixedly connected to an impeller 8, the outer wall of the impeller 8 is fixedly connected to a connecting shaft 7, the inner wall of the connecting shaft 7 is plugged with a cross plug 6, the outer wall of the cross plug 6 is fixedly connected to a driving shaft 10, the outer wall of the driving shaft 10 is rotatably connected to a limiting bracket 9, the outer wall of the limiting bracket 9 is fixedly connected to a connecting seat 3, the connecting seat 3 and the centrifugal pump body 1 are connected by screws, the outer wall of the connecting seat 3 is fixedly connected to a filter housing 2, the outer wall of the filter housing 2 is connected to a disc housing 5, the top of the filter housing 2 is fixedly connected to a water pipe connector 4, the outer wall of the driving shaft 10 is fixedly connected to a main bidirectional threaded rod 19, the inner wall of the disc housing 5 is rotatably connected to a rotating disk 16, a filter plate 20 is provided below the rotating disk 16, and the filter plate 20 is fixedly connected to the inner wall of the filter housing 2, and also includes:

[0036] The dual-purpose mechanism 101 is used to ensure the water permeability of the filter plate 20 when water is flowing, and to prevent the impurities from escaping into the water when collecting impurities. The dual-purpose mechanism 101 is installed on the rotating disk 16;

[0037] The sealing mechanism 202 is used to ensure the tightness of the filter housing 2 when water flows. The sealing mechanism 202 is installed on the rotating disk 16;

[0038] The limiting mechanism 303 is used to cooperate with the sealing mechanism 202 to form a complete plane when the dual-purpose mechanism 101 collects impurities. The limiting mechanism 303 is installed on the sealing mechanism 202;

[0039] And the reciprocating slag storage mechanism 404 is used to cooperate with the rotation of the main bidirectional threaded rod 19 so that the rotating disk 16 can intermittently reciprocate, thereby intermittently collecting impurities.

[0040] Among them, a connecting shell 22 is fixedly connected between the filter housing 2 and the disc housing 5, the bottom of the disc housing 5 is connected to the slag storage chamber 18, the outer wall of the slag storage chamber 18 is provided with a door panel 37, the door panel 37 is connected to the slag storage chamber 18 by screws, the outer wall of the main two-way threaded rod 19 is threadedly connected to the sliding block 44, the inner wall of the sliding block 44 is slidably connected to the limit rod 17, the limit rod 17 is fixedly connected to the filter housing 2, and the end of the main two-way threaded rod 19 away from the driving shaft 10 is fixedly connected to the first shaft 21, and the first shaft 21 is rotatably connected to the filter housing 2.

[0041] In this embodiment, when in use, the cross plug 6 on the drive shaft 10 is inserted into the connecting shaft 7, the connecting seat 3 is connected to the shell of the centrifugal pump body 1 by screws, the water flows into the drive shaft 10 through the water pipe connector 4, the drive motor inside the centrifugal pump body 1 starts to rotate, and the water flows through the impeller 8. Figure 3As shown, the sealing strip 12 is inserted into the filter housing 2 to ensure the tightness. The water flows on the dual-purpose plate 11, driving the dual-purpose plate 11 to rotate continuously. Figure 6 As shown, at this time, the first rack 32 has moved to the top and will not engage with the third shaft 30. The dual-purpose plate 11 can rotate freely, and the impurities are intercepted by the filter plate 20. Since the water flow falls vertically on the filter plate 20, under the action of gravity and negative pressure, the impurities will stick to the outer wall of the filter plate 20, making the water permeability of the filter plate 20 worse. Therefore, the dual-purpose plate 11 continues to rotate, and the edge will contact the impurities on the filter plate 20, driving the impurities to temporarily leave the filter plate 20, thereby enhancing the water permeability of the filter plate 20.

[0042] Among them, the sealing mechanism 202 includes a sealing rack 43, an upper moving disk 49, two connecting rods 236, two support frames 24, two sealing strips 12, two support gears 41 and two support racks 40. The sealing rack 43 is fixedly connected to the sliding block 44, and the sealing rack 43 is meshed with one of the support gears 41. The two support gears 41 are fixedly connected through a set shaft rod. The two support gears 41 are rotatably connected to the connecting shell 22 through a set shaft rod. The two support racks 40 are slidingly connected to the connecting shell 22. The two support racks 40 are respectively meshed with the two support gears 41. The two support racks 40 are both slidingly connected to the upper moving disk 49. The upper moving disk 49 is arranged inside the connecting shell 22. The two connecting rods 236 are fixedly connected to the upper moving disk 49. The ends of the two connecting rods 236 are both fixedly connected to the two support frames 24. The two support frames 24 are respectively fixedly connected to the two sealing strips 12. The two sealing strips 12 are both slidingly connected to the rotating disk 16.

[0043] In this embodiment, since the impeller 8 is continuously rotating, the setting is as follows: Figure 4 In the direction shown, the sliding block 44 moves along the main bidirectional threaded rod 19 toward the drive shaft 10, as shown in FIG. Figure 10 As shown, the reciprocating rack 48 will not drive the ratchet assembly 47 to rotate at this time, the sealing rack 43 has driven the support gear 41, and the support rack 40 has been moved up. Therefore, when the support rack 40 moves back and forth close to the drive shaft 10 at this position, it is the process of water flow. Impurities will not be collected during this process. If the time of the impurity collection interval needs to be controlled, it is only necessary to replace the main bidirectional threaded rod 19 with a different pitch, and there is no need to set up a complicated transmission mechanism.

[0044] When the support rack 40 returns from the drive shaft 10, the sealing rack 43 will first drive the support gear 41 to rotate, so that the support gear 41 drives the support rack 40 to move downward, and the support rack 40 drives the upward moving plate 49 to move downward, and the main bidirectional threaded rod 19 drives the connecting rod 2 36, the support frame 24 and the sealing strip 12 to move downward, so that the sealing strip 12 is separated from the inner wall of the filter housing 2, and the sealing state is released.

[0045] Among them, the dual-purpose mechanism 101 includes a transfer frame 13, a connecting cavity 15, a first chain 34, four dual-purpose plates 11, four second shafts 25 and four second gears 33. The connecting cavity 15 is fixedly connected to the main shaft 39, the connecting cavity 15 is fixedly connected to the transfer frame 13, the four second shafts 25 are rotatably connected to the transfer frame 13, the four dual-purpose plates 11 are respectively fixedly connected to the four second shafts 25, the four second gears 33 are respectively fixedly connected to the four dual-purpose plates 11, and the first chain 34 is sleeved on the outer walls of the four second gears 33.

[0046] Among them, the dual-purpose mechanism 101 also includes a first sliding rod 26, a first fixed rod 27, a first sliding rail 28, a first spring 29, a third shaft rod 30, a first rack 32 and two first gears 31. The first sliding rod 26 is rotatably connected to the sealing bar 12, the outer wall of the first sliding rod 26 is slidably connected to the first fixed rod 27, the two ends of the first spring 29 are fixedly connected to the first sliding rod 26 and the first fixed rod 27 respectively, the first fixed rod 27 is rotatably connected to the first rack 32, the first sliding rail 28 is fixedly connected to the transfer frame 13, the first rack 32 is slidably connected to the first slide rail 28, the third shaft rod 30 is rotatably connected to the transfer frame 13, and the two first gears 31 are fixed at both ends of the third shaft rod 30, one of the first gears 31 is meshed with the first rack 32, and the other first gear 31 is movably connected to the first chain 34.

[0047] There are two sealing mechanisms 202 , which are symmetrically distributed. A water-permeable groove 14 is provided on the outer wall of the rotating disk 16 .

[0048] Among them, the limiting mechanism 303 includes a sloped baffle 23 and two second springs 35. The sloped baffle 23 is fixedly connected to the transfer frame 13. The two second springs 35 are fixedly connected on both sides of the sloped baffle 23. The ends of the two second springs 35 away from the sloped baffle 23 are fixedly connected to the inner wall of the transfer frame 13. There are eight limiting mechanisms 303, and a limiting mechanism 303 is provided above each dual-purpose plate 11.

[0049] In this embodiment, as the sealing strip 12 moves downward, the inclined baffle 23 will be squeezed out by the sealing strip 12, so that the inclined baffle 23 will hinder the rotation of the dual-purpose plate 11. At the same time, when the sealing strip 12 moves downward, the sealing strip 12 will drive the first rack 32 to move downward through the first slide bar 26 and the first fixed rod 27, so the downward movement of the first rack 32 will drive the third shaft rod 30 to move downward. Since a first spring 29 is provided between the first slide bar 26 and the first fixed rod 27, when the dual-purpose plate 11 conflicts with the inclined baffle 23, the first rack 32 has been stuck, so the downward movement distance of the sealing strip 12 is compensated by the stretching of the first spring 29. At this time, the four dual-purpose plates 11 have formed a plane together with the transfer frame 13 to limit the impurities on the upper surface of the filter plate 20.

[0050] Among them, the reciprocating slag storage mechanism 404 includes a limiting rod 2 38, a main shaft rod 39, a reciprocating shaft rod 42, a first slider 45, a secondary bidirectional threaded rod 46, a reciprocating rack 48, a ratchet assembly 47 and a second slider 50. The reciprocating rack 48 is fixedly connected to the sliding block 44, the secondary bidirectional threaded rod 46 is rotatably connected to the connecting shell 22, the second slider 50 is threadedly connected to the outer wall of the secondary bidirectional threaded rod 46, one side outer wall of the ratchet assembly 47 is fixedly connected to the secondary bidirectional threaded rod 46, and the other side outer wall of the ratchet assembly 47 is meshed with the reciprocating rack 48, the first slider 45 is fixedly connected to the second slider 50, the first slider 45 is slidingly connected to the reciprocating shaft rod 42 through the opened spiral groove, the reciprocating shaft rod 42 is fixedly connected to the main shaft rod 39, the main shaft rod 39 is fixedly connected to the rotating disk 16, the limiting rod 2 38 is fixedly connected to the connecting shell 22, and the outer wall of the limiting rod 2 38 is slidingly connected to the second slider 50.

[0051] In this embodiment, the reciprocating rack 48 then drives the ratchet assembly 47 to rotate, and the limit rod 17 drives the secondary bidirectional threaded rod 46 to rotate, so that the first slider 45 moves to the top of the reciprocating shaft 42 through the spiral groove on the reciprocating shaft 42, thereby driving the reciprocating shaft 42 to rotate half a circle, so that the reciprocating shaft 42 drives the main shaft 39, the rotating disk 16 and the two transfer frames 13 to rotate half a circle, and the transfer frame 13 originally located on the filter housing 2 moves to the slag storage chamber 18 with the accumulated impurities, and the impurities fall into the slag storage chamber 18 and are collected.

[0052] During the rotation of the rotating disk 16, the water flow can still be transported through the water-permeable groove 14 and the filter plate 20, and will not affect the transportation of the water flow. Due to the function of the reciprocating slag storage mechanism 404, even if the rotating disk 16 needs to rotate half a circle to transfer impurities on the filter plate 20, the function of the water-permeable groove 14 will not affect the circulation of water, and the water flow will not move into the slag storage chamber 18. The slag storage chamber 18 can be cleaned by removing the door panel 37.

[0053] Subsequently, when the sliding block 44 moves to the end of the main bidirectional threaded rod 19 and approaches the drive shaft 10 again, the sealing rack 43 drives the supporting gear 41 to rotate, so that the supporting rack 40 moves up again, and the supporting rack 40 drives the upward disk 49, the connecting rod 2 36 and the support frame 24 so that the sealing strip 12 is inserted into the filter housing 2 and sealed again.

[0054] The following is a detailed explanation of the specific working principle and method of use of the present invention: When in use, the cross plug 6 on the driving shaft 10 is inserted into the connecting shaft 7, the connecting seat 3 is connected to the shell of the centrifugal pump body 1 by screws, the driving shaft 10 water flows into the water pipe connector 4, the driving motor inside the centrifugal pump body 1 starts to rotate, and the water flows through the impeller 8, such as Figure 3As shown, the sealing strip 12 is inserted into the filter housing 2 to ensure the tightness. The water flows on the dual-purpose plate 11, driving the dual-purpose plate 11 to rotate continuously. Figure 6 As shown, at this time, the first rack 32 has moved to the top and will not engage with the third shaft 30. The dual-purpose plate 11 can rotate freely, and the impurities are intercepted by the filter plate 20. Since the water flow falls vertically on the filter plate 20, under the action of gravity and negative pressure, the impurities will stick to the outer wall of the filter plate 20, making the water permeability of the filter plate 20 worse. Therefore, the dual-purpose plate 11 continues to rotate, and the edge will contact the impurities on the filter plate 20, driving the impurities to temporarily leave the filter plate 20, thereby enhancing the water permeability of the filter plate 20.

[0055] Since the impeller 8 is continuously rotating, the setting is as follows Figure 4 In the direction shown, the sliding block 44 moves along the main bidirectional threaded rod 19 toward the drive shaft 10, as shown in FIG. Figure 10 As shown, the reciprocating rack 48 will not drive the ratchet assembly 47 to rotate at this time, the sealing rack 43 has driven the support gear 41, and the support rack 40 has been moved up. Therefore, when the support rack 40 moves back and forth close to the drive shaft 10 at this position, it is the process of water flow. Impurities will not be collected during this process. If the time of the impurity collection interval needs to be controlled, it is only necessary to replace the main bidirectional threaded rod 19 with a different pitch, and there is no need to set up a complicated transmission mechanism.

[0056] When the support rack 40 returns from the drive shaft 10, the sealing rack 43 will first drive the support gear 41 to rotate, so that the support gear 41 drives the support rack 40 to move downward, and the support rack 40 drives the upward moving plate 49 to move downward, and the main bidirectional threaded rod 19 drives the connecting rod 2 36, the support frame 24 and the sealing strip 12 to move downward, so that the sealing strip 12 is separated from the inner wall of the filter housing 2, and the sealing state is released.

[0057] Subsequently, as the sealing strip 12 moves downward, the inclined baffle 23 will be squeezed out by the sealing strip 12, so that the inclined baffle 23 will hinder the rotation of the dual-purpose plate 11. At the same time, when the sealing strip 12 moves downward, the sealing strip 12 will drive the first rack 32 to move downward through the first slide bar 26 and the first fixed rod 27. Therefore, the downward movement of the first rack 32 will drive the third shaft rod 30 to move downward. Since a first spring 29 is provided between the first slide bar 26 and the first fixed rod 27, when the dual-purpose plate 11 conflicts with the inclined baffle 23, the first rack 32 has been stuck. Therefore, the downward movement distance of the sealing strip 12 is compensated by the stretching of the first spring 29. At this time, the four dual-purpose plates 11 have formed a plane together with the transfer frame 13 to limit the impurities on the upper surface of the filter plate 20.

[0058] Then the reciprocating rack 48 drives the ratchet assembly 47 to rotate, and the limit rod 17 drives the secondary bidirectional threaded rod 46 to rotate, so that the first slider 45 moves to the top of the reciprocating shaft 42 through the spiral groove on the reciprocating shaft 42, thereby driving the reciprocating shaft 42 to rotate half a circle, so that the reciprocating shaft 42 drives the main shaft 39, the rotating disk 16 and the two transfer frames 13 to rotate half a circle, and the transfer frame 13 originally located on the filter housing 2 moves to the slag storage chamber 18 with the accumulated impurities, and the impurities fall into the slag storage chamber 18 and are collected.

[0059] During the rotation of the rotating disk 16, the water flow can still be transported through the water-permeable groove 14 and the filter plate 20, and will not affect the transportation of the water flow. Due to the function of the reciprocating slag storage mechanism 404, even if the rotating disk 16 needs to rotate half a circle to transfer impurities on the filter plate 20, the function of the water-permeable groove 14 will not affect the circulation of water, and the water flow will not move into the slag storage chamber 18. The slag storage chamber 18 can be cleaned by removing the door panel 37.

[0060] Subsequently, when the sliding block 44 moves to the end of the main bidirectional threaded rod 19 and approaches the drive shaft 10 again, the sealing rack 43 drives the supporting gear 41 to rotate, so that the supporting rack 40 moves up again, and the supporting rack 40 drives the upward disk 49, the connecting rod 2 36 and the support frame 24 so that the sealing strip 12 is inserted into the filter housing 2 and sealed again.

[0061] It is further explained that the above-mentioned fixed connection should be understood in a broad sense unless otherwise clearly specified and limited. For example, it can be welding, gluing, or one-piece molding, etc., which are common means well known to those skilled in the art.

[0062] The above description is only a preferred specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with the technical field, within the technical scope disclosed by the present invention, who makes equivalent replacements or changes based on the technical solution and inventive concept of the present invention, should be covered by the scope of protection of the present invention.

Claims

1. A centrifugal pump structure with filter blocking prevention, comprising a centrifugal pump body (1), wherein a power shaft of the centrifugal pump body (1) is fixedly connected to an impeller (8), an outer wall of the impeller (8) is fixedly connected to a connecting shaft (7), an inner wall of the connecting shaft (7) is plugged with a cross plug (6), an outer wall of the cross plug (6) is fixedly connected to a driving shaft (10), an outer wall of the driving shaft (10) is rotatably connected to a limiting bracket (9), an outer wall of the limiting bracket (9) is fixedly connected to a connecting seat (3), and the connecting seat (3) is connected to the centrifugal pump body (1) are connected by screws, the outer wall of the connecting seat (3) is fixedly connected to the filter housing (2), the outer wall of the filter housing (2) is connected to the disc housing (5), the top of the filter housing (2) is fixedly connected to the water pipe connector (4), the outer wall of the drive shaft (10) is fixedly connected to the main bidirectional threaded rod (19), the inner wall of the disc housing (5) is rotatably connected to the rotating disk (16), a filter plate (20) is provided below the rotating disk (16), and the filter plate (20) is fixedly connected to the inner wall of the filter housing (2), characterized in that, Also includes: A dual-purpose mechanism (101) is used to ensure the water permeability of the filter plate (20) when water is flowing, and to ensure that the impurities do not escape into the water when collecting impurities. The dual-purpose mechanism (101) is installed on the rotating disk (16); A sealing mechanism (202) is used to ensure the tightness of the filter housing (2) when water flows, and the sealing mechanism (202) is installed on the rotating disk (16); The limiting mechanism (303) is used to cooperate with the sealing mechanism (202) to form a complete plane when the dual-purpose mechanism (101) collects impurities. The limiting mechanism (303) is installed on the sealing mechanism (202); and a reciprocating slag storage mechanism (404) for cooperating with the rotation of the main bidirectional threaded rod (19) to enable the rotating disk (16) to intermittently reciprocate, thereby intermittently collecting impurities; The dual-purpose mechanism (101) includes a transfer frame (13), a connecting cavity (15), a first chain (34), four dual-purpose plates (11), four second shafts (25) and four second gears (33), wherein the connecting cavity (15) is fixedly connected to the main shaft (39), the connecting cavity (15) is fixedly connected to the transfer frame (13), the four second shafts (25) are rotatably connected to the transfer frame (13), the four dual-purpose plates (11) are respectively fixedly connected to the four second shafts (25), the four second gears (33) are respectively fixedly connected to the four dual-purpose plates (11), and the first chain (34) is sleeved on the outer walls of the four second gears (33); The dual-purpose mechanism (101) further comprises a first slide bar (26), a first fixed bar (27), a first slide rail (28), a first spring (29), a third shaft bar (30), a first rack (32) and two first gears (31), wherein the outer wall of the first slide bar (26) is slidably connected to the first fixed bar (27), the two ends of the first spring (29) are fixedly connected to the first slide bar (26) and the first fixed bar (27), the first fixed bar (27) is rotatably connected to the first rack (32), the first slide rail (28) is fixedly connected to the transfer frame (13), the first rack (32) is slidably connected to the first slide rail (28), the third shaft bar (30) is rotatably connected to the transfer frame (13), and the two first gears (31) are fixed to the two ends of the third shaft bar (30), one of the first gears (31) is meshed with the first rack (32), and the other first gear (31) is movably connected to the first chain (34).

2. A centrifugal pump structure with filter clogging prevention according to claim 1, characterized in that: A connecting shell (22) is fixedly connected between the filter housing (2) and the disc housing (5); the bottom of the disc housing (5) is connected to a slag storage chamber (18); the outer wall of the slag storage chamber (18) is provided with a door panel (37); the door panel (37) is connected to the slag storage chamber (18) by screws; the outer wall of the main bidirectional threaded rod (19) is threadedly connected to a sliding block (44); the inner wall of the sliding block (44) is slidably connected to a limiting rod (17); the limiting rod (17) is fixedly connected to the filter housing (2); the end of the main bidirectional threaded rod (19) away from the driving shaft (10) is fixedly connected to a first shaft (21); the first shaft (21) is rotatably connected to the filter housing (2).

3. A centrifugal pump structure with filter clogging prevention according to claim 2, characterized in that: The sealing mechanism (202) includes a sealing rack (43), an upward moving plate (49), two connecting rods (36), two support frames (24), two sealing bars (12), two supporting gears (41) and two supporting racks (40), wherein the sealing rack (43) is fixedly connected to the sliding block (44), the sealing rack (43) is meshed with one of the supporting gears (41), the two supporting gears (41) are fixedly connected via a set shaft, the two supporting gears (41) are rotatably connected to the connecting shell (22) via the set shaft, and the two supporting racks (40) are connected to the connecting shell ( 22) sliding connection, the two supporting racks (40) are respectively engaged with the two supporting gears (41), the two supporting racks (40) are both slidingly connected to the upper moving disk (49), the upper moving disk (49) is arranged inside the connecting shell (22), the two connecting rods (36) are fixedly connected to the upper moving disk (49), the ends of the two connecting rods (36) are both fixedly connected to the two supporting frames (24), the two supporting frames (24) are respectively fixedly connected to the two sealing strips (12), the two sealing strips (12) are both slidingly connected to the rotating disk (16), and the first sliding rod (26) is rotationally connected to the sealing strip (12).

4. A centrifugal pump structure with filter clogging prevention according to claim 3, characterized in that: The reciprocating slag storage mechanism (404) includes a second limiting rod (38), a main shaft rod (39), a reciprocating shaft rod (42), a first slider (45), a secondary bidirectional threaded rod (46), a reciprocating rack (48), a ratchet assembly (47) and a second slider (50), wherein the reciprocating rack (48) is fixedly connected to the sliding block (44), the secondary bidirectional threaded rod (46) is rotatably connected to the connecting shell (22), the second slider (50) is threadedly connected to the outer wall of the secondary bidirectional threaded rod (46), and one side outer wall of the ratchet assembly (47) is screwed to the secondary bidirectional threaded rod. (46) is fixedly connected, the outer wall of the other side of the ratchet assembly (47) is engaged with the reciprocating rack (48), the first slider (45) is fixedly connected to the second slider (50), the first slider (45) is slidably connected to the reciprocating shaft (42) through the opened spiral groove, the reciprocating shaft (42) is fixedly connected to the main shaft (39), the main shaft (39) is fixedly connected to the rotating disk (16), the limiting rod 2 (38) is fixedly connected to the connecting shell (22), and the outer wall of the limiting rod 2 (38) is slidably connected to the second slider (50).

5. The centrifugal pump structure with filter clogging prevention according to claim 1, characterized in that: Two sealing mechanisms (202) are provided, and the two sealing mechanisms (202) are symmetrically distributed. A water-permeable groove (14) is provided on the outer wall of the rotating disk (16).

6. The centrifugal pump structure with filter clogging prevention according to claim 1, characterized in that: The limiting mechanism (303) includes a slanted baffle (23) and two second springs (35), wherein the slanted baffle (23) is fixedly connected to the transfer frame (13), and the two second springs (35) are fixedly connected to both sides of the slanted baffle (23), and one end of the two second springs (35) away from the slanted baffle (23) is fixedly connected to the inner wall of the transfer frame (13). There are eight limiting mechanisms (303), and one limiting mechanism (303) is provided above each dual-purpose plate (11).

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