Centrifugal pump with circulating filtering structure

Abstract

The utility model belongs to the technical field of centrifugal pumps, and particularly relates to a centrifugal pump with a circulating filtering structure, which comprises a base, a motor body, a pump body, a water inlet pipe and a water outlet pipe, the motor body is mounted on the surface of the base, the pump body is connected to the output end of the motor body, and the water inlet pipe is connected to the outer side of the pump body. When water enters the filter box through the conveying pipe, large particle impurities in the water are primarily filtered through the first filter element, small particle impurities in the water are secondarily filtered through the second filter element, and the water filtered by the second filter element can be conveyed into the water inlet pipe through the butt joint pipe. The circulating pump can convey water between the second filter element and the butt joint pipe to the position between the first filter element and the conveying pipe through the circulating pipe, so that the water filtered by the second filter element can be filtered again, and the water can be circularly filtered through the circulating pump.

Description

Technical Field

[0001] This utility model relates to the field of centrifugal pump technology, specifically a centrifugal pump with a circulating filter structure. Background Technology

[0002] Centrifugal pumps are common fluid transport devices widely used in shipbuilding, petroleum, chemical, environmental protection, water conservancy, heating, and water supply and drainage industries. In the shipbuilding industry, centrifugal pumps can transport seawater.

[0003] Horizontal centrifugal pumps are a common type of centrifugal pump, playing a vital role on ships. Their performance stability and reliability directly affect the safe operation of the vessel. Existing centrifugal pumps, however, cannot circulate and filter the water they pump, allowing impurities to accumulate inside and damage the pump. Furthermore, these impurities can contaminate downstream water-using equipment. Summary of the Invention

[0004] The purpose of this invention is to provide a centrifugal pump with a circulating filtration structure to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a centrifugal pump with a circulating filtration structure, comprising a base, a motor body, a pump body, an inlet pipe, and an outlet pipe. The motor body is mounted on the surface of the base, and the output end of the motor body is connected to the pump body. The inlet pipe is connected to the outside of the pump body, and the outlet pipe is connected to the top of the pump body. A filter box is mounted on the base near the top of the inlet pipe. Two sets of circulating pipes are connected to the bottom of the filter box, and the ends of the two sets of circulating pipes are connected to a circulating pump. A delivery pipe is connected to one side of the filter box, and a connecting pipe is connected to the other side of the filter box. Two sets of retainers are installed inside the filter box. A first filter element is inserted into one set of retainers, and a second filter element is inserted into the other set of retainers. A sealing cover is provided on the top of the first and second filter elements. A sealing gasket is adhered to the sealing cover near the bottom of the filter box. A bolt is connected to the top of the filter box, and a nut is threaded onto the outside of the bolt.

[0006] Preferably, the sealing cover has a through groove inside that matches the bolt size, and the bolt and the sealing cover form a sliding structure through the through groove.

[0007] Preferably, the pore size of the second filter element is smaller than that of the first filter element.

[0008] Preferably, a support frame is mounted on the surface of the base, and a fixing rod is connected inside the support frame.

[0009] Preferably, two sets of sliders are slidably connected to the outer side of the fixing rod, one set of sliders is connected to a first fixing plate at its end, and the other set of sliders is connected to a second fixing plate at its end.

[0010] Preferably, rubber sheets are adhered to the arc-shaped inner walls of both the second fixing plate and the first fixing plate, and a movable block is movably connected inside the first fixing plate via a rotating shaft.

[0011] Preferably, a compression spring is internally connected to the second fixing plate, and one end of the compression spring is connected to a locking block.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0013] 1. In use, when water enters the filter box through the delivery pipe, the first filter element performs initial filtration of larger particulate impurities in the water, and the second filter element performs secondary filtration of smaller particulate impurities. The water filtered by the second filter element can be delivered to the inlet pipe through the connecting pipe. The circulation pump can deliver the water between the second filter element and the connecting pipe to the area between the first filter element and the delivery pipe through the circulation pipe, so that the water filtered by the second filter element can be filtered again. Thus, the circulation pump can circulate and filter the water, which helps to improve filtration efficiency and media quality, making it less likely for impurities in the water to damage the centrifugal pump. When a lot of impurities accumulate on the surface of the first and second filter elements, the sealing cover can move the sealing gasket. When the sealing cover is moved from the outside of the bolt, the filter box can be opened, and the first and second filter elements can be removed from the filter box for cleaning.

[0014] 2. In use, the first and second fixing plates are pushed closer to each other. When the first and second fixing plates move, they can drive the corresponding sliders to slide through the fixing rods. When the arc-shaped inner walls of the first and second fixing plates move to the outer surface of the connected pipe, the rubber sheets on the first and second fixing plates can be squeezed and deformed with the connected pipe. When the locking block moves, it can compress the compression spring. When the compression spring is compressed to its maximum extent, it can pull the moving block towards the inside of the moving block. When the moving block rotates and moves into the inside of the second fixing plate, the locking block can be released. At this time, the compression spring can be reset, so that the locking block can be reset. When the locking block is reset, its end can be inserted into the inside of the moving block. The first and second fixing plates can limit and fix the connected pipe, so that the connected pipe can be stably installed on the top of the water outlet pipe and is not easy to shake, thereby improving the connection between the water outlet pipe and the pipe. Attached Figure Description

[0015] Figure 1This is a schematic diagram of the main structure of this utility model;

[0016] Figure 2 This is a schematic diagram of the main cross-sectional structure of the filter box of this utility model;

[0017] Figure 3 This is a top view cross-sectional structural diagram of the first fixing plate of this utility model.

[0018] Figure 4 This is a three-dimensional structural diagram of the first fixing plate of this utility model.

[0019] In the diagram: 1. Base; 2. Motor body; 3. Pump body; 4. Inlet pipe; 5. Outlet pipe; 6. Filter box; 7. Circulation pipe; 8. Circulation pump; 9. Delivery pipe; 10. Connecting pipe; 11. Card holder; 12. First filter element; 13. Second filter element; 14. Sealing cover; 15. Sealing gasket; 16. Bolt; 17. Nut; 18. Support frame; 19. Fixing rod; 20. Slider; 21. First fixing plate; 22. Second fixing plate; 23. Rubber sheet; 24. Moving block; 25. Compression spring; 26. Locking block. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] Please see Figure 1 and Figure 2It is understood that this utility model provides a technical solution: a centrifugal pump with a circulating filtration structure, including a base 1, a motor body 2, a pump body 3, an inlet pipe 4, and an outlet pipe 5. The motor body 2 is mounted on the surface of the base 1, and the output end of the motor body 2 is connected to the pump body 3. The inlet pipe 4 is connected to the outside of the pump body 3, and the outlet pipe 5 is connected to the top of the pump body 3. A filter box 6 is mounted on the base 1 near the top of the inlet pipe 4. Two sets of circulation pipes 7 are connected to the bottom of the filter box 6, and the ends of the two sets of circulation pipes 7 are connected to a circulating pump 8. A delivery pipe 9 is connected to one side of the filter box 6, and a connecting pipe 10 is connected to the other side of the filter box 6. Two sets of retainers 11 are installed inside the filter box 6, and a first... The filter element 12 has a second filter element 13 inserted into the other set of brackets 11. The top of the first filter element 12 and the second filter element 13 are jointly provided with a sealing cover 14. A sealing gasket 15 is glued to the bottom of the sealing cover 14 near the filter box 6. The sealing gasket 15 is made of silicone. The top of the filter box 6 is connected with a bolt 16. A nut 17 is threaded on the outside of the bolt 16. A through groove matching the size of the bolt 16 is opened through the inside of the sealing cover 14. The bolt 16 and the sealing cover 14 form a sliding structure through the through groove. The pore size of the second filter element 13 is smaller than that of the first filter element 12. The pore size range of the first filter element 12 is 40-90μm, and the pore size range of the second filter element 13 is 1-10μm.

[0022] In practical implementation, centrifugal pumps can transport various liquid media. Traditional centrifugal pumps are not easy to circulate and filter, making them prone to internal damage from impurities in the water. When water enters the filter box 6 through the delivery pipe 9, it undergoes initial filtration of larger particles by the first filter element 12 and secondary filtration of smaller particles by the second filter element 13. The water filtered by the second filter element 13 can be transported to the inlet pipe 4 through the connecting pipe 10. Simultaneously, the circulation pump 8 can be started. The circulation pump 8, through the circulation pipe 7, can transport the water between the second filter element 13 and the connecting pipe 10 to the water between the first filter element 12 and the delivery pipe 9, thus ensuring that the water filtered by the second filter element 13 is filtered. The water filtered by the second filter element 13 can be filtered again, and the water can be circulated and filtered by the circulation pump 8. The circulation filtration helps to improve the filtration efficiency and media quality, making it less likely for impurities in the water to damage the centrifugal pump. When a lot of impurities accumulate on the surface of the first filter element 12 and the second filter element 13, the water supply can be stopped first, and then the two sets of nuts 17 can be loosened respectively, so that the nuts 17 can slide out of the threads of the corresponding bolts 16. At this time, the nuts 17 no longer press on the surface of the sealing cover 14, so that the sealing cover 14 can be pulled away from the filter box 6. When the sealing cover 14 moves, it can drive the sealing gasket 15 to move.

[0023] See Figure 1 and Figure 2It can be seen that when the sealing cover 14 is removed from the outside of the bolt 16, the filter box 6 can be opened, and the first filter element 12 and the second filter element 13 can be taken out from the inside of the filter box 6 and cleaned.

[0024] See Figure 1 , Figure 3 and Figure 4 It can be seen that a support frame 18 is installed on the surface of the base 1, and a fixed rod 19 is connected inside the support frame 18. Two sets of sliders 20 are slidably connected to the outside of the fixed rod 19. The end of one set of sliders 20 is connected to a first fixed plate 21, and the end of the other set of sliders 20 is connected to a second fixed plate 22. Rubber sheets 23 are glued to the arc-shaped inner walls of the second fixed plate 22 and the first fixed plate 21. A moving block 24 is movably connected inside the first fixed plate 21 through a rotating shaft. A compression spring 25 is connected inside the second fixed plate 22. One end of the compression spring 25 is connected to a locking block 26. A locking groove matching the size of the locking block 26 is opened inside the moving block 24.

[0025] In practical implementation, when this utility model is used, after the pipe connected to the water outlet pipe 5 is installed, the first fixing plate 21 and the second fixing plate 22 can be pushed closer to each other. When the first fixing plate 21 and the second fixing plate 22 move, they can drive the corresponding slider 20 to slide through the fixing rod 19. When the arc-shaped inner walls of the first fixing plate 21 and the second fixing plate 22 move to the outer surface of the connected pipe, the rubber sheet 23 on the first fixing plate 21 and the second fixing plate 22 can be squeezed and deformed with the connected pipe. At this time, the locking block 26 can be pushed closer to the support frame 18. When the locking block 26 moves, it can compress the compression spring 25. When the compression spring 25 is compressed to its maximum extent, it can pull the moving block 24 towards the inside of the moving block 24. When the moving block 24 moves, it can rotate through the pivot. When the moving block 24 rotates and moves into the second fixed plate 22, the locking block 26 can be released. At this time, the compression spring 25 can be reset, so that the locking block 26 can be reset. When the locking block 26 is reset, its end can be inserted into the moving block 24, so that the first fixed plate 21 and the second fixed plate 22 are not easy to loosen.

[0026] See Figure 1 , Figure 3 and Figure 4 It can be seen that the first fixing plate 21 and the second fixing plate 22 can limit and fix the connected pipe, so that the connected pipe can be stably installed on the top of the water outlet pipe 5 and is not easy to shake, thereby improving the connection between the water outlet pipe 5 and the pipe.

[0027] In summary, when this utility model is used, the first filter element 12 performs initial filtration of larger particulate impurities in the water, and the second filter element 13 performs secondary filtration of smaller particulate impurities in the water. The water filtered by the second filter element 13 can be transported to the inlet pipe 4 through the connecting pipe 10. At the same time, the circulation pump 8 can be started. The circulation pump 8 can transport the water between the second filter element 13 and the connecting pipe 10 to the water between the first filter element 12 and the delivery pipe 9 through the circulation pipe 7, so that the water filtered by the second filter element 13 can be filtered again. Thus, the circulation pump 8 can circulate and filter the water. The circulation filtration measure helps to improve the filtration efficiency and media quality. The first fixing plate 21 and the second fixing plate 22 can limit and fix the connected pipe, so that the connected pipe can be stably installed on the top of the outlet pipe 5 and is not easy to shake, thereby improving the connection between the outlet pipe 5 and the pipe. The contents not described in detail in this description are the prior art known to those skilled in the art.

[0028] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A centrifugal pump with a circulating filtration structure, comprising a base (1), a motor body (2), a pump body (3), an inlet pipe (4), and an outlet pipe (5), characterized in that: The base (1) is equipped with a motor body (2), the output end of the motor body (2) is connected to a pump body (3), the outside of the pump body (3) is connected to a water inlet pipe (4), and the top of the pump body (3) is connected to a water outlet pipe (5). A filter box (6) is installed above the base (1) near the water inlet pipe (4). Two sets of circulation pipes (7) are connected to the bottom of the filter box (6). The ends of the two sets of circulation pipes (7) are connected to a circulation pump (8). A conveying pipe (9) is connected to one side of the filter box (6). A connecting pipe (10) is connected to the other side of the filter box (6). Two sets of card holders (11) are installed inside the filter box (6). A first filter element (12) is inserted into one set of card holders (11). A second filter element (13) is inserted into the other set of card holders (11). A sealing cover (14) is provided on the top of the first filter element (12) and the second filter element (13). A sealing gasket (15) is glued to the bottom of the filter box (6) near the sealing cover (14). A bolt (16) is connected to the top of the filter box (6). A nut (17) is threaded onto the outside of the bolt (16).

2. A centrifugal pump with a circulating filter structure according to claim 1, characterized in that: The sealing cap (14) has a through groove inside that matches the size of the bolt (16), and the bolt (16) and the sealing cap (14) are connected by the through groove to form a sliding structure.

3. A centrifugal pump with a circulating filter structure according to claim 1, characterized in that: The pore size of the second filter element (13) is smaller than that of the first filter element (12).

4. A centrifugal pump with a circulating filter structure according to claim 1, characterized in that: A support frame (18) is mounted on the surface of the base (1), and a fixing rod (19) is connected inside the support frame (18).

5. A centrifugal pump with a circulating filter structure according to claim 4, characterized in that: Two sets of sliders (20) are slidably connected to the outside of the fixed rod (19). The end of one set of sliders (20) is connected to a first fixed plate (21), and the end of the other set of sliders (20) is connected to a second fixed plate (22).

6. A centrifugal pump with a circulating filter structure according to claim 5, characterized in that: The arc-shaped inner walls of the second fixing plate (22) and the first fixing plate (21) are both bonded with rubber sheets (23), and the interior of the first fixing plate (21) is movably connected to a moving block (24) via a rotating shaft.

7. A centrifugal pump with a circulating filter structure according to claim 6, characterized in that: The second fixing plate (22) is internally connected to a compression spring (25), and one end of the compression spring (25) is connected to a locking block (26).

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