A high efficiency single stage end suction centrifugal pump

Abstract

The application belongs to the technical field of centrifugal pumps, in particular to a high-efficiency single-stage end centrifugal pump, which comprises a centrifugal pump main body, a liquid inlet pipe is vertically arranged on one side of the top of the centrifugal pump main body, a liquid outlet pipe is horizontally arranged on one side of the centrifugal pump main body, a filter plate for filtering impurities in liquid is fixedly connected to one side of the inner wall of the liquid inlet pipe, a plurality of rows of filter holes are uniformly arranged on the filter plate in the circumferential direction, and an intermittent dredging assembly for preventing the filter holes from being blocked is arranged on the liquid inlet pipe. The intermittent dredging assembly can continuously reciprocate up and down through the dredging column during the liquid conveying process, lift the impurities covered on the surface of the filter plate or adhered to the inner wall of the filter hole, and make the impurities away from the filter hole, so as to avoid the impurities from blocking the filter hole and ensure the smooth passing of the liquid. In addition, the above-mentioned dredging process does not need to stop the centrifugal pump, thereby ensuring the continuity of the liquid conveying.

Description

Technical Field

[0001] This invention belongs to the field of centrifugal pump technology, specifically a high-efficiency single-stage centrifugal pump. Background Technology

[0002] A single-stage centrifugal pump is a common centrifugal pump design that contains only one impeller through which liquid flows and is then transported. It is widely used in cooling water circulation, water supply, fire fighting, heating, and industrial water applications.

[0003] In existing technologies, when using a centrifugal pump to transport liquids, the liquid may contain a certain amount of solid impurities. To prevent these impurities from bumping or scratching the impeller or becoming stuck in the impeller's flow channels and causing blockages, filter plates are installed on the inner wall of the inlet pipe to filter out impurities and prevent them from directly contacting the impeller. However, during actual use, impurities accumulate on the surface of the filter plates or adhere to the inner wall of the filter holes, causing blockages and affecting the efficiency of subsequent liquid flow. Furthermore, even if the filter plates can be cleaned by disassembling them, this process interrupts the operation of the centrifugal pump, affecting continuous transport efficiency to some extent. Summary of the Invention

[0004] To overcome the shortcomings of the prior art and solve at least one of the technical problems mentioned in the background art, the present invention proposes a high-efficiency single-stage centrifugal pump.

[0005] The technical solution adopted by the present invention to solve its technical problem is: a high-efficiency single-stage centrifugal pump, including a centrifugal pump body, an inlet pipe vertically arranged on one side of the top of the centrifugal pump body, an outlet pipe horizontally arranged on one side of the centrifugal pump body, a filter plate for filtering impurities in the liquid fixedly connected to one side of the inner wall of the inlet pipe, multiple rows of filter holes evenly arranged along the circumference of the filter plate, and an intermittent unblocking component for preventing the filter holes from clogging on the inlet pipe;

[0006] The intermittent unblocking assembly includes a lifting frame located below the filter plate. Multiple rows of unblocking columns matching the filter hole specifications are evenly distributed and fixed to the upper surface of the lifting frame along the circumference. Each row of unblocking columns is aligned with a row of filter holes. When the unblocking columns rise, they pass through the filter holes and push out the impurities clogging the filter holes.

[0007] Preferably, the liquid inlet pipe is provided with a first transmission component for driving the lifting frame to move up and down reciprocally;

[0008] The first transmission assembly includes a lower shell fixedly connected to one side of the inner wall of the liquid inlet pipe. The lower shell is located below the filter plate. Two sliding rods are slidably inserted vertically through the top of the lower shell. The tops of the two sliding rods are fixedly connected to the lower surface of the lifting frame.

[0009] Preferably, a worm gear and a cam are rotatably arranged on one side of the inner wall of the lower shell. The cam and the worm gear are aligned on the same axis and are fixedly connected. The lower ends of the two slide rods are fixedly connected to a pressing plate. The cam is in contact with the lower surface of the pressing plate. A worm gear is rotatably inserted through the side wall of the liquid inlet pipe. One end of the worm gear is rotatably inserted through the side wall of the lower shell, and the helical teeth on the worm gear are located in the inner cavity of the lower shell.

[0010] Preferably, one end of the slide rod is fitted with a second spring, one end of which is fixedly connected to the upper surface of the pressing plate, and the other end is fixedly connected to the inner wall of the lower shell.

[0011] Preferably, the inlet pipe is equipped with a scraping and collecting component;

[0012] The scraping and collecting assembly includes a middle shell, a collection box, and a rotating shaft. The lower end of the rotating shaft is fixedly connected to one side of the outer wall of the middle shell. The collection box is fixedly connected to one side of the top of the centrifugal pump body. The lower edge of the middle shell is attached to the upper surface of the filter plate. A collection trough for collecting impurities is provided on one side of the upper end of the filter plate. A conveying pipe is fixedly connected to one side of the side wall of the inlet pipe. The port of the conveying pipe near the inlet pipe is connected to the inside of the collection trough. A second conveying pipe is fixedly connected to the upper side of the end of the conveying pipe near the collection box. The upper side of the second conveying pipe is connected to the inner cavity of the collection box through a sludge outlet pipe.

[0013] Preferably, a support rod is fixedly connected to one side of the inner wall of the liquid inlet pipe, and an upper shell is fixedly connected to the middle of the upper end face of the support rod. The upper end of the rotating shaft rotatably passes through the upper shell and the support rod.

[0014] Preferably, a worm gear is fixedly sleeved on the upper end of the rotating shaft, the worm gear is located in the inner cavity of the upper shell, a worm is rotatably arranged on one side of the side wall of the liquid inlet pipe, one end of the worm is rotatably arranged on the side wall of the upper shell, and the helical teeth on the worm are located in the inner cavity of the upper shell and mesh with the worm gear. A motor is fixedly connected to one side of the outer wall of the liquid inlet pipe, and the output end of the motor is fixedly connected to one end of the worm.

[0015] Preferably, the scraping and collecting assembly includes a conveying structure for transferring impurities;

[0016] The conveying structure includes a horizontal conveying screw and a vertical conveying screw. The horizontal conveying screw is located in the inner cavity of the first conveying pipe and the collection tank, with one end of the horizontal conveying screw rotatably mounted on the inner wall of the collection tank and the other end rotatably mounted on the inner wall of the first conveying pipe. A fourth motor is fixedly connected to one side of the outer wall of the collection box, and the output end of the fourth motor is fixedly connected to one end of the horizontal conveying screw. The vertical conveying screw is located in the inner cavity of the second conveying pipe, with its upper end rotatably mounted on the upper end of the inner wall of the second conveying pipe. A third motor is fixedly connected to one side of the upper end of the collection box, and the output end of the third motor is fixedly connected to one end of the vertical conveying screw.

[0017] Preferably, the middle shell is provided with a transfer pipeline anti-blocking component;

[0018] The transfer pipeline anti-clogging assembly includes multiple blades arranged laterally, and a number of gears equal to the number of blades. Each blade is aligned with the axis of a gear and the two are fixedly connected. The gears are rotatably mounted on the outer wall of the middle shell, and the blades are rotatably mounted on the outer wall of the middle shell.

[0019] Preferably, a rack is slidably connected to one side of the inner cavity of the middle shell, and the teeth on the rack mesh with multiple gears. A spring is fixedly connected to one end of the rack, and the end of the spring away from the rack is fixedly connected to the inner wall of the middle shell. Multiple protrusions are intermittently fixed along the circumferential direction on the inner wall of the liquid inlet pipe. When the end of the rack contacts the inclined surface of the protrusion, the rack will slide due to the pressure of the protrusion.

[0020] The beneficial effects of this invention are as follows:

[0021] 1. The high-efficiency single-stage centrifugal pump of this invention utilizes an intermittent unblocking component. During liquid transport, the continuous up-and-down reciprocating motion of the unblocking column lifts impurities covering the filter plate surface or adhering to the inner wall of the filter holes, moving the impurities away from the filter holes and thus preventing impurities from clogging the filter holes, ensuring smooth liquid passage. Furthermore, the unblocking process does not require the centrifugal pump to stop, ensuring continuous liquid transport. On the other hand, the continuous unblocking of the filter holes effectively suppresses the increase in pump inlet negative pressure and fluid flow resistance caused by filter hole blockage. Compared to the situation where filter hole blockage requires increasing pump speed or consuming additional power to compensate for flow loss, the filter plate in this application operates under a low flow resistance stable condition, thus avoiding unnecessary pump work, significantly reducing the ineffective energy consumption of the transport system, and achieving energy saving during operation.

[0022] 2. The high-efficiency single-stage centrifugal pump of the present invention utilizes a scraping and collecting component to transfer impurities remaining on the surface of the filter plate to a collection box while the cleaning column clears the filter holes. This avoids the situation where impurities lifted by the cleaning column remain on the surface of the filter plate and continue to accumulate, eventually obscuring the filter holes. This ensures the cleanliness of the filter plate surface in real time and further improves the liquid delivery efficiency.

[0023] 3. The high-efficiency single-stage centrifugal pump of the present invention utilizes a transfer pipeline anti-clogging component. During the process of scraping impurities in the middle shell, multiple blades reciprocate simultaneously through intermittent contact between the rack and multiple protrusions. The blades cut the impurities scraped by the middle shell, thereby breaking up clumps or agglomerates of impurities, reducing their volume, and preventing impurities from clogging multiple pipelines during subsequent transfer processes, which would otherwise affect the normal operation of the transfer work. Attached Figure Description

[0024] The invention will now be further described with reference to the accompanying drawings.

[0025] Figure 1 This is a schematic diagram of the complete three-dimensional structure of the present invention;

[0026] Figure 2 This is a three-dimensional structural diagram of the inlet pipe and the collection box;

[0027] Figure 3 yes Figure 2 Enlarged view of a portion of point A in the middle;

[0028] Figure 4 This is a schematic diagram of the three-dimensional structure of the collection tank;

[0029] Figure 5 This is a schematic diagram of the three-dimensional structure of the upper shell;

[0030] Figure 6 yes Figure 5 Enlarged view of a section at point B in the middle;

[0031] Figure 7 This is a schematic diagram of the three-dimensional structure of the filter plate.

[0032] Figure 8 yes Figure 7 Enlarged view of a section at point C;

[0033] Figure 9 This is a schematic diagram of the three-dimensional structure of the protrusion.

[0034] In the diagram: 1. Centrifugal pump body; 2. Inlet pipe; 3. Outlet pipe; 4. Collection box; 5. Motor 1; 6. Motor 2; 7. Upper shell; 8. Middle shell; 9. Filter plate; 10. Lower shell; 11. Worm gear 1; 12. Worm gear 2; 13. Conveying pipe 1; 14. Motor 3; 15. Conveying pipe 2; 16. Vertical conveying screw; 17. Sewage outlet pipe; 18. Motor 4; 19. Horizontal conveying screw; 20. Collection tank; 21. Filter holes; 22. Worm gear 1; 23. Gear; 24. Support rod; 25. Rotating shaft 1; 26. Blade; 27. Rack; 28. Protrusion; 29. ​​Spring 1; 30. Spring 2; 31. Unblocking column; 32. Lifting frame; 33. Worm gear 2; 34. Cam; 35. Extrusion plate; 36. Slide rod. Detailed Implementation

[0035] The technical solution of the present invention will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0036] Example 1:

[0037] Please refer to Figures 1-9 The present invention provides a technical solution: a high-efficiency single-stage centrifugal pump, including a centrifugal pump body 1, an inlet pipe 2 vertically arranged on one side of the top of the centrifugal pump body 1, and an outlet pipe 3 horizontally arranged on one side of the centrifugal pump body 1, characterized in that: a filter plate 9 for filtering impurities in the liquid is fixedly connected to one side of the inner wall of the inlet pipe 2, the filter plate 9 is uniformly arranged with multiple rows of filter holes 21 along the circumference, and an intermittent unblocking component for preventing the filter holes 21 from being blocked is provided on the inlet pipe 2;

[0038] The intermittent unblocking assembly includes a lifting frame 32 located below the filter plate 9. Multiple rows of unblocking columns 31 that match the specifications of the filter holes 21 are evenly distributed and fixed on the upper surface of the lifting frame 32 along the circumference. Each row of unblocking columns 31 is aligned with a row of filter holes 21. When the unblocking columns 31 rise, they will pass through the filter holes 21 and push out the impurities that are blocking the filter holes 21.

[0039] like Figure 7 and Figure 8 As shown, the inlet pipe 2 is equipped with a first transmission component for driving the lifting frame 32 to move up and down reciprocally.

[0040] The first transmission assembly includes a lower shell 10 fixedly connected to one side of the inner wall of the liquid inlet pipe 2. The lower shell 10 is located below the filter plate 9. Two slide rods 36 are slidably inserted vertically through the top of the lower shell 10. The tops of the two slide rods 36 are fixedly connected to the lower surface of the lifting frame 32.

[0041] like Figure 2 , Figure 7 , Figure 8 As shown, a worm gear 33 and a cam 34 are rotatably mounted on one side of the inner wall of the lower shell 10. The cam 34 and the worm gear 33 have the same axis and are fixedly connected. The lower ends of the two slide rods 36 are fixedly connected to the extrusion plate 35. The cam 34 is in contact with the lower surface of the extrusion plate 35. A worm gear 12 is rotatably mounted through the side wall of the liquid inlet pipe 2. One end of the worm gear 12 located in the inner cavity of the liquid inlet pipe 2 is rotatably mounted through the side wall of the lower shell 10. The helical teeth on the worm gear 12 are located in the inner cavity of the lower shell 10 and mesh with the worm gear 33. A motor 6 is fixedly connected to one side of the outer wall of the liquid inlet pipe 2. The output end of the motor 6 is fixedly connected to one end of the worm gear 12.

[0042] like Figure 8 As shown, a spring 30 is sleeved on one end of a sliding rod 36. One end of the spring 30 is fixedly connected to the upper surface of the pressing plate 35, and the other end is fixedly connected to the inner wall of the lower shell 10.

[0043] Specifically, in existing technologies, when using a centrifugal pump to transport liquids, the liquid may contain a certain amount of solid impurities. To prevent these impurities from bumping or scratching the impeller, or from getting stuck in the impeller's flow channel and causing blockage, a filter plate 9 is installed on the inner wall of the inlet pipe 2 to filter out impurities and prevent them from directly contacting the impeller. However, during actual use, impurities accumulate on the surface of the filter plate 9 or adhere to the inner wall of the filter holes 21, causing blockage and affecting the efficiency of subsequent liquid flow. Furthermore, even if the filter plate 9 can be cleaned by disassembling it, this method will interrupt the operation of the centrifugal pump, affecting the continuous transport efficiency to some extent.

[0044] Therefore, in order to solve the above problems, the working principle of this embodiment is as follows:

[0045] Install the centrifugal pump body 1 in a suitable position, and connect the inlet pipe 2 and outlet pipe 3 to the external pipeline through the flange. Then, use the drive motor on the centrifugal pump body 1 to drive the internal impeller to rotate, thereby realizing the transportation of liquid.

[0046] When the liquid enters the inlet pipe 2, the filter plate 9 intercepts solid impurities in the liquid, and the liquid passes through multiple filter holes 21. This avoids the situation where solid impurities come into contact with the impeller, causing damage such as impacts or scratches, or becoming stuck in the impeller's flow channel and causing blockages.

[0047] Simultaneously, motor 6 drives worm gear 12 to rotate, which in turn causes cam 34 to rotate continuously under the transmission cooperation of worm gear 12 and worm wheel 33. When the proximal end of cam 34 contacts the lower surface of extrusion plate 35, extrusion plate 35 is at its lowest point, and unblocking column 31 is away from filter hole 21, allowing liquid to pass through normally. As cam 34 continues to rotate, when the distal end of cam 34 contacts the lower surface of extrusion plate 35, extrusion plate 35 is at its highest point. During the upward movement of extrusion plate 35, unblocking column 31 will pass through filter hole 21 until the upper end face of unblocking column 31 is flush with the upper surface of filter plate 9.

[0048] The unblocking column 31 will lift up any impurities covering the filter hole 21 or adhering to its inner wall, at which point the second spring 30 is in a compressed state. Therefore, when the cam 34 rotates to contact the lower surface of the extrusion plate 35 at its proximal end, the extrusion plate 35 will return to its original position under the action of the second spring 30, the unblocking column 31 will move away from the filter hole 21, and the liquid can be transported normally.

[0049] By repeating the above operation, during the liquid transportation process, the unblocking column 31 continuously lifts up impurities covering or adhering to the inner wall of the filter holes 21, keeping them away from the filter holes 21 and thus preventing them from clogging the filter holes 21, ensuring smooth liquid passage. Furthermore, the above unblocking process does not require the centrifugal pump to be stopped, ensuring the continuity of liquid transportation. On the other hand, the continuous unobstructed flow of the filter holes 21 effectively suppresses the increase in negative pressure at the pump inlet and the rise in fluid flow resistance caused by clogging of the filter holes 21. Compared to the condition where the pump speed needs to be increased or additional power consumed to compensate for flow loss when the filter holes 21 are clogged, the filter plate 9 in this application operates under a low flow resistance and stable condition, thus avoiding unnecessary work by the pump body, significantly reducing the ineffective energy consumption of the transportation system, and achieving energy saving during operation.

[0050] Example 2:

[0051] like Figures 2-5 As shown, the inlet pipe 2 is equipped with a scraping and collecting component;

[0052] The scraping and collecting assembly includes a middle shell 8, a collection box 4, and a rotating shaft 25. The lower end of the rotating shaft 25 is fixedly connected to one side of the outer wall of the middle shell 8. The collection box 4 is fixedly connected to one side of the top of the centrifugal pump body 1. The lower edge of the middle shell 8 is attached to the upper surface of the filter plate 9. A collection trough 20 for collecting impurities is provided on one side of the upper end of the filter plate 9. A conveying pipe 13 is fixedly connected to one side of the side wall of the inlet pipe 2. The port of the conveying pipe 13 near the inlet pipe 2 is connected to the inside of the collection trough 20. A conveying pipe 25 is fixedly connected to the upper side of the end of the conveying pipe 13 near the collection box 4. The upper side of the conveying pipe 25 is connected to the inner cavity of the collection box 4 through a sludge outlet pipe 17.

[0053] As shown in Figure 5, a support rod 24 is fixedly connected to one side of the inner wall of the liquid inlet pipe 2. An upper shell 7 is fixedly connected to the middle of the upper end face of the support rod 24. The upper end of the rotating shaft 25 rotates through the upper shell 7 and the support rod 24.

[0054] Such as 2 and Figure 5 As shown, a worm gear 22 is fixedly sleeved on the upper end of the rotating shaft 25. The worm gear 22 is located in the inner cavity of the upper shell 7. A worm 11 is rotatably installed on one side of the side wall of the liquid inlet pipe 2. One end of the worm 11 is rotatably installed on the side wall of the upper shell 7, and the helical teeth on the worm 11 are located in the inner cavity of the upper shell 7 and mesh with the worm gear 22. A motor 5 is fixedly connected to one side of the outer wall of the liquid inlet pipe 2. The output end of the motor 5 is fixedly connected to one end of the worm 11.

[0055] like Figure 3 As shown, the scraping and collecting assembly includes a conveying structure for transferring impurities;

[0056] The conveying structure includes a horizontal conveying screw 19 and a vertical conveying screw 16. The horizontal conveying screw 19 is located inside the conveying pipe 13 and the collection tank 20. One end of the horizontal conveying screw 19 is rotatably mounted on the inner wall of the collection tank 20, and the other end is rotatably mounted on the inner wall of the conveying pipe 13. A motor 4 18 is fixedly connected to one side of the outer wall of the collection box 4. The output end of the motor 4 18 is fixedly connected to one end of the horizontal conveying screw 19. The vertical conveying screw 16 is located inside the conveying pipe 2 15. The upper end of the vertical conveying screw 16 is rotatably mounted on the upper end of the inner wall of the conveying pipe 2 15. A motor 3 14 is fixedly connected to one side of the upper end of the collection box 4. The output end of the motor 3 14 is fixedly connected to one end of the vertical conveying screw 16.

[0057] Specifically, in the above embodiment, although the filter hole 21 can be cleared by the unblocking column 31, impurities will still remain on the upper surface of the filter plate 9. As impurities accumulate, even if the impurities are pushed up again, they will still cover the filter hole 21, thus affecting the smooth passage of subsequent liquids.

[0058] Therefore, in order to solve the above problems, the working principle of this embodiment is as follows:

[0059] In its initial state, the middle shell 8 is positioned above the collection tank 20, forming a closed cavity. When the upper surface of the unblocking column 31 is flush with the upper surface of the filter plate 9, the unblocking column 31 briefly stops moving. The motor 5 drives the worm gear 11 to rotate, which in turn causes the shaft 25 to rotate under the transmission cooperation of the worm gear 11 and the worm wheel 22. The middle shell 8 then rotates along the upper surface of the filter plate 9. Since the lower edge of the middle shell 8 is in contact with the upper surface of the filter plate 9, the middle shell 8 scrapes the impurities from the upper surface of the filter plate 9 and those lifted by the unblocking column 31. When the middle shell 8 moves to the collection tank 20, the impurities fall into the collection tank 20, and the middle shell 8 stops above the collection tank 20 again.

[0060] At this time, the middle shell 8 seals the upper end of the collection tank 20, so the impurities in the collection tank 20 will not return to the filter plate 9 due to the impact of the liquid. Therefore, when the motor 4 18 drives the horizontal conveying screw 19 to rotate, the impurities will enter the first conveying pipe 13 through the collection tank 20. When the impurities reach the end of the first conveying pipe 13, the motor 3 14 drives the vertical conveying screw 16 to rotate, so the impurities will enter the second conveying pipe 15. When the impurities reach the top of the second conveying pipe 15, the impurities will enter the collection box 4 through the sludge outlet pipe 17 for collection. Furthermore, since the second conveying pipe 15 is vertically set, some of the liquid that moves with the impurities will not enter the collection box 4.

[0061] By repeating the above operation, while clearing the filter holes 21, the impurities remaining on the surface of the filter plate 9 can be transferred to the collection box 4. This avoids the situation where impurities lifted by the clearing column 31 remain on the surface of the filter plate 9 and continue to accumulate, thus ensuring the cleanliness of the surface of the filter plate 9 in real time and further improving the liquid delivery efficiency.

[0062] In addition, the unblocking column 31 and the middle shell 8 work in a regular intermittent manner. The unblocking column 31 blocks the filter hole 21 for a short time, and the impact on the conveying efficiency is negligible.

[0063] Example 3:

[0064] like Figure 5 , Figure 6 , Figure 9 As shown, the middle shell 8 is equipped with a transfer pipeline anti-blocking component;

[0065] The transfer pipeline anti-clogging assembly includes multiple blades 26 arranged laterally, and the same number of gears 23 as the blades 26. Each blade 26 is aligned with the axis of a gear 23 and the two are fixedly connected. The gears 23 are rotatably mounted on the outer wall of the middle shell 8, and the blades 26 are rotatably mounted on the outer wall of the middle shell 8.

[0066] like Figure 6 , Figure 9 As shown, a rack 27 is slidably connected to one side of the inner cavity of the middle shell 8. The teeth on the rack 27 mesh with multiple gears 23. A spring 29 is fixedly connected to one end of the rack 27. The end of the spring 29 away from the rack 27 is fixedly connected to the inner wall of the middle shell 8. Multiple protrusions 28 are intermittently fixed along the circumference of the inner wall of the liquid inlet pipe 2. When the end of the rack 27 contacts the inclined surface of the protrusion 28, the rack 27 will slide due to the pressure of the protrusion 28.

[0067] Specifically, in the above embodiments, although the scraping and collecting components can be used to transfer the impurities remaining on the surface of the filter plate 9 to the collection box 4, since the impurities need to pass through the first conveying pipe 13, the second conveying pipe 15, and the sewage outlet pipe 17, if some of the impurities are lumpy or agglomerated, they are likely to block the above-mentioned pipes during the conveying process, thereby affecting the normal transfer of impurities.

[0068] Therefore, in order to solve the above problems, the working principle of this embodiment is as follows:

[0069] When the middle shell 8 scrapes impurities along the surface of the filter plate 9, the rack 27 also makes a circular motion and intermittently contacts multiple protrusions 28. When the end of the rack 27 is squeezed by the protrusions 28, the rack 27 slides laterally, which drives multiple gears 23 to rotate simultaneously, and the blades 26 will also rotate synchronously. When the rack 27 moves away from the protrusions 28, the rack 27 returns to its original position under the action of the spring 29, and the blades 26 will rotate in the other direction. Thus, through the intermittent contact between the rack 27 and multiple protrusions 28, multiple blades 26 rotate simultaneously and reciprocate. By using the blades 26 to cut the impurities scraped by the middle shell 8, the clumps or agglomerated impurities can be broken up, thereby reducing the volume of impurities and avoiding the situation where impurities easily block multiple pipelines during subsequent transfer, thus affecting the normal operation of the transfer work.

[0070] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A high-efficiency single-stage centrifugal pump, comprising a centrifugal pump body (1), wherein an inlet pipe (2) is vertically arranged on one side of the top of the centrifugal pump body (1), and an outlet pipe (3) is horizontally arranged on one side of the centrifugal pump body (1), characterized in that: A filter plate (9) for filtering impurities in the liquid is fixedly connected to one side of the inner wall of the liquid inlet pipe (2). Multiple rows of filter holes (21) are evenly arranged on the filter plate (9) along the circumference. An intermittent unblocking component is provided on the liquid inlet pipe (2) to prevent the filter holes (21) from being blocked. The intermittent unblocking assembly includes a lifting frame (32) located below the filter plate (9). The upper surface of the lifting frame (32) is evenly distributed and fixed with multiple rows of unblocking columns (31) that match the specifications of the filter holes (21). Each row of unblocking columns (31) is aligned with a row of filter holes (21). When the unblocking columns (31) rise, they will pass through the filter holes (21) and push out the impurities that block the filter holes (21).

2. The high-efficiency single-stage centrifugal pump according to claim 1, characterized in that: The inlet pipe (2) is provided with a first transmission component for driving the lifting frame (32) to move up and down reciprocally; The first transmission assembly includes a lower shell (10) fixedly connected to one side of the inner wall of the liquid inlet pipe (2). The lower shell (10) is located below the filter plate (9). Two sliding rods (36) are slidably inserted vertically through the top of the lower shell (10). The tops of the two sliding rods (36) are fixedly connected to the lower surface of the lifting frame (32).

3. The high-efficiency single-stage centrifugal pump according to claim 2, characterized in that: A worm gear (33) and a cam (34) are rotatably arranged on one side of the inner wall of the lower shell (10). The cam (34) and the worm gear (33) are axially aligned and fixedly connected. The lower ends of the two slide rods (36) are fixedly connected to a pressing plate (35). The cam (34) is in contact with the lower surface of the pressing plate (35). A worm gear (12) is rotatably inserted through the side wall of the liquid inlet pipe (2). One end of the worm gear (12) located in the inner cavity of the liquid inlet pipe (2) is rotatably inserted through the side wall of the lower shell (10). The helical teeth on the worm gear (12) are located in the inner cavity of the lower shell (10), and the helical teeth mesh with the worm gear (33). A motor (6) is fixedly connected to one side of the outer wall of the liquid inlet pipe (2). The output end of the motor (6) is fixedly connected to one end of the worm gear (12).

4. A high-efficiency single-stage centrifugal pump according to claim 2, characterized in that: One end of the slide rod (36) on one side is fitted with a spring (30), one end of the spring (30) is fixedly connected to the upper surface of the extrusion plate (35), and the other end is fixedly connected to the inner wall of the lower shell (10).

5. A high-efficiency single-stage centrifugal pump according to claim 1, characterized in that: The inlet pipe (2) is equipped with a scraping and collecting component; The scraping and collecting assembly includes a middle shell (8), a collection box (4), and a rotating shaft (25). The lower end of the rotating shaft (25) is fixedly connected to one side of the outer wall of the middle shell (8). The collection box (4) is fixedly connected to one side of the top of the centrifugal pump body (1). The lower edge of the middle shell (8) is attached to the upper surface of the filter plate (9). A collection trough (20) for collecting impurities is provided on one side of the upper end of the filter plate (9). A conveying pipe (13) is fixedly connected to one side of the side wall of the inlet pipe (2). The port of the conveying pipe (13) near the inlet pipe (2) is connected to the inside of the collection trough (20). A conveying pipe (25) is fixedly connected to one side of the upper end of the conveying pipe (13) near the collection box (4). The upper end of the conveying pipe (25) is connected to the inner cavity of the collection box (4) through a sewage outlet pipe (17).

6. A high-efficiency single-stage centrifugal pump according to claim 5, characterized in that: A support rod (24) is fixedly connected to one side of the inner wall of the liquid inlet pipe (2). An upper shell (7) is fixedly connected to the middle of the upper end face of the support rod (24). The upper end of the rotating shaft (25) rotates through the upper shell (7) and the support rod (24).

7. A high-efficiency single-stage centrifugal pump according to claim 6, characterized in that: The upper end of the rotating shaft (25) is fixedly fitted with a worm gear (22), which is located in the inner cavity of the upper shell (7). A worm (11) is rotatably arranged on one side of the side wall of the liquid inlet pipe (2). One end of the worm (11) is rotatably arranged on the side wall of the upper shell (7), and the helical teeth on the worm (11) are located in the inner cavity of the upper shell (7) and mesh with the worm gear (22). A motor (5) is fixedly connected to one side of the outer wall of the liquid inlet pipe (2), and the output end of the motor (5) is fixedly connected to one end of the worm (11).

8. A high-efficiency single-stage centrifugal pump according to claim 5, characterized in that: The scraping and collecting assembly includes a conveying structure for transferring impurities; The conveying structure includes a horizontal conveying screw (19) and a vertical conveying screw (16). The horizontal conveying screw (19) is located in the inner cavity of the first conveying pipe (13) and the collection trough (20). One end of the horizontal conveying screw (19) is rotatably set on the inner wall of the collection trough (20), and the other end is rotatably set on the inner wall of the first conveying pipe (13). A motor four (18) is fixedly connected to one side of the outer wall of the collection box (4). The output end of the motor four (18) is fixedly connected to one end of the horizontal conveying screw (19). The vertical conveying screw (16) is located in the inner cavity of the second conveying pipe (15). The upper end of the vertical conveying screw (16) is rotatably set on the upper end of the inner wall of the second conveying pipe (15). A motor three (14) is fixedly connected to one side of the upper end of the collection box (4). The output end of the motor three (14) is fixedly connected to one end of the vertical conveying screw (16).

9. A high-efficiency single-stage centrifugal pump according to claim 5, characterized in that: The middle shell (8) is provided with a transfer pipeline anti-blocking component; The transfer pipeline anti-blocking assembly includes multiple blades (26) arranged laterally, and gears (23) of the same number as the blades (26). Each blade (26) is aligned with the axis of a gear (23) and the two are fixedly connected. The gears (23) are rotatably mounted on the outer wall of the middle shell (8), and the blades (26) are rotatably mounted on the outer wall of the middle shell (8).

10. A high-efficiency single-stage centrifugal pump according to claim 9, characterized in that: A rack (27) is slidably connected to one side of the inner cavity of the middle shell (8). The teeth on the rack (27) mesh with multiple gears (23). A spring (29) is fixedly connected to one end of the rack (27). The end of the spring (29) away from the rack (27) is fixedly connected to the inner wall of the middle shell (8). Multiple protrusions (28) are intermittently fixed along the circumferential direction on the inner wall of the liquid inlet pipe (2). When the end of the rack (27) contacts the inclined surface of the protrusion (28), the rack (27) will slide due to the pressure of the protrusion (28).

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