Centrifugal pump filtering device

Abstract

The utility model provides a centrifugal pump filtering device which comprises a containing base, a pump body containing base, a working pump body and a filtering assembly. The inner wall of the filter cartridge is fixedly connected with a filter sieve tray; the bottom of the filter sieve tray is fixedly connected with a motor cylinder; a built-in motor is fixedly connected to the interior of the motor cylinder; an output shaft of the built-in motor is fixedly connected with a rotating shaft through a coupling; the top end of the rotating shaft sequentially penetrates through the motor cylinder and the filter sieve tray and extends to the top of the filter sieve tray; one end of the rotating shaft at the top of the filter sieve tray is fixedly connected with a rotating round block; the surface of the rotating round block is fixedly connected with a scraping plate; a supporting rod is fixedly connected to the surface of the rotating round block and located on one side of the scraper. According to the filtering device, the accumulation condition can be avoided, so that continuous filtering is achieved, meanwhile, the effect of cleaning internal impurities is achieved, the filtering chuck does not need to be replaced, the filtering cylinder does not need to be repeatedly disassembled and assembled, and the service life of the filtering device is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of centrifugal pumps, in particular to a centrifugal pump filtering device. Background Art

[0002] Centrifugal pumps are widely used in many industries such as electricity, metallurgy, building materials, chemical industry, petroleum, etc. They are used to transport various high-temperature, low-temperature, strong acid, strong alkali, highly corrosive, flammable and explosive substances. For example, thermal power plants use centrifugal pumps for hydraulic ash removal, and metallurgical mines use centrifugal pumps for slurry transportation. In addition, centrifugal pumps can also be used in cooling systems, industrial cleaning systems, aquaculture farms, industrial equipment and other fields.

[0003] A Chinese patent with publication number CN220378569U discloses a centrifugal pump bottom valve filter device and a centrifugal pump, wherein the centrifugal pump bottom valve filter device comprises a check valve and a filter structure; the check valve can be connected to the water inlet of the centrifugal pump; the filter structure is used to prevent foreign matter from entering the check valve. The use of the centrifugal pump bottom valve filter device can solve the problem that the existing centrifugal pump is easily damaged due to impurities or air entering the centrifugal pump when transporting gas field water.

[0004] As mentioned above, the patent provides a centrifugal pump bottom valve filter device and a centrifugal pump. Although it can solve the problem that the centrifugal pump is easily damaged due to impurities or air entering the centrifugal pump when transporting gas field water, it uses a filter net for filtering, and once impurities and foreign matter are present, they cannot be processed. As the centrifugal pump works for a long time, impurities and foreign matter will gradually accumulate. When the accumulation is serious, it will cause blockage on the filter net, and the centrifugal pump needs to be disassembled and the filter net replaced or the interior cleaned. This repeated disassembly and assembly can easily affect the service life of the centrifugal pump. Utility Model Content

[0005] The utility model provides a centrifugal pump filtering device to solve the problems raised in the background technology.

[0006] In order to solve the above problems, the utility model provides a centrifugal pump filter device, comprising a placement base, a pump body placement seat, a working pump body and a filter assembly, wherein the filter assembly comprises a filter cartridge; the inner wall of the filter cartridge is fixedly connected with a filter screen plate; the bottom of the filter screen plate is fixedly connected with a motor cartridge; the inside of the motor cartridge is fixedly connected with a built-in motor; the output shaft of the built-in motor is fixedly connected with a rotating shaft through a coupling; the top end of the rotating shaft sequentially penetrates the motor cartridge and the filter screen plate and extends to the top of the filter screen plate; the end of the rotating shaft located at the top of the filter screen plate is fixedly connected with a rotating circular block; the surface of the rotating circular block is fixedly connected with a scraper; the surface of the rotating circular block and one side of the scraper are fixedly connected with a support rod; the surface of the support rod is sleeved with a compression spring; one end of the compression spring is fixedly connected with a sliding snap ring; the surface of the support rod and the side of the sliding snap ring away from the compression spring are slidably connected with a piston block; the surface of the filter cartridge is provided with a discharge port adapted to the piston block; the surface of the discharge port is threadedly connected with a blocking block.

[0007] Preferably: the bottom of the filter cartridge is connected with a connecting pipe; the surface of the connecting pipe is threadedly connected to the top of the working pump body; the inner side of the sliding clamp is slidingly connected to the surface of the support rod; the end of the compression spring away from the sliding clamp is fixedly connected to the surface of the rotating block.

[0008] Preferably: the bottom of the pump body placement seat is fixedly connected to one side of the top of the placement base; the bottom of the working pump body is fixedly connected to the top of the pump body placement seat; the side of the top of the placement base away from the pump body placement seat is fixedly connected to a motor placement seat.

[0009] Preferably: the top of the motor placement seat is fixedly connected to a power supply motor; the output shaft of the power supply motor is fixedly connected to a transmission shaft via a coupling; the surface of the transmission shaft is rotatably connected to a shaft support frame; the bottom of the shaft support frame is fixedly connected to the top of the placement base.

[0010] Preferably: one end of the transmission shaft passes through the working pump body and extends to the inside of the working pump body; one end of the transmission shaft located inside the working pump body is fixedly connected to an impeller.

[0011] Preferably: the top of the filter cartridge is connected with a feed flange pipe; the side of the working pump body away from the energy supply motor is connected with a discharge flange pipe.

[0012] The beneficial effects of adopting the above technical solution are:

[0013] The impurities entering the centrifugal pump are filtered by setting a filter sieve plate, and at the same time, the built-in motor drives the rotating round block to start rotating through the rotating shaft, and the rotating round block drives the scraper to start rotating, thereby scraping off the impurities accumulated on the top of the filter sieve plate to avoid accumulation, thereby allowing continuous filtration. In addition, the blocked blocks inside the discharge port can be removed from time to time, and then with the rotation of the rotating round block, the support rod will rotate to the discharge port, and the piston block will be pushed out of the discharge port by the elastic force of the compression spring and the sliding retaining ring, while there is still a certain amount of liquid material flowing inside, thereby bringing the scraped impurities out of the discharge port, thereby cleaning the internal impurities, and there is no need to replace the filter chuck or repeatedly disassemble and assemble the filter cartridge, thereby ensuring its service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model.

[0015] Figure 2 It is a schematic diagram of part of the structure of the utility model.

[0016] Figure 3 This is an exploded view of the top structure of the working pump body of the utility model.

[0017] Figure 4 It is a schematic diagram of the cross-sectional structure of the filter cartridge in the utility model.

[0018] Figure 5 It is a schematic diagram of the top structure of the filter screen plate in the utility model.

[0019] Among them: 1. Placement base; 2. Pump body placement seat; 3. Working pump body; 4. Filter cartridge; 5. Filter sieve plate; 6. Motor cartridge; 7. Built-in motor; 8. Rotating shaft; 9. Rotating round block; 10. Scraper; 11. Support rod; 12. Compression spring; 13. Sliding clamp ring; 14. Piston block; 15. Discharge port; 16. Blocking block; 17. Connecting pipe; 18. Motor placement seat; 19. Power supply motor; 20. Transmission shaft; 21. Shaft support frame; 22. Impeller; 23. Feed flange pipe; 24. Discharge flange pipe. DETAILED DESCRIPTION

[0020] The embodiments of the present utility model are described in detail below with reference to the accompanying drawings.

[0021] In the description of the present invention, unless otherwise specified, "multiple" means two or more; the terms "upper", "lower", "left", "right", "inner", "outer", "front end", "rear end", "head", "tail" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", "third" and the like are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0022] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "connected" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, a movable connection or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0023] like Figure 1 - Figure 5 As shown, in this embodiment, a centrifugal pump filter device includes a placement base 1, a pump body placement seat 2, a working pump body 3 and a filter assembly, the filter assembly includes a filter cartridge 4; the inner wall of the filter cartridge 4 is fixedly connected to a filter sieve plate 5; the bottom of the filter sieve plate 5 is fixedly connected to a motor cartridge 6; the interior of the motor cartridge 6 is fixedly connected to a built-in motor 7; the output shaft of the built-in motor 7 is fixedly connected to a rotating shaft 8 through a coupling; the top end of the rotating shaft 8 sequentially penetrates the motor cartridge 6 and the filter sieve plate 5 and extends to the top of the filter sieve plate 5; the rotating shaft 8 is located at the top of the filter sieve plate 5 A rotating block 9 is fixedly connected to one end; a scraper 10 is fixedly connected to the surface of the rotating block 9; a support rod 11 is fixedly connected to the surface of the rotating block 9 and located on one side of the scraper 10; a compression spring 12 is sleeved on the surface of the support rod 11; a sliding snap ring 13 is fixedly connected to one end of the compression spring 12; a piston block 14 is slidably connected to the surface of the support rod 11 and located on the side of the sliding snap ring 13 away from the compression spring 12; a discharge port 15 adapted to the piston block 14 is provided on the surface of the filter cartridge 4; a blocking block 16 is threadedly connected to the surface of the discharge port 15.

[0024] Through the above technical scheme, the placement base 1 supports the pump body placement seat 2, and the pump body placement seat 2 supports the working pump body 3. When filtering, the filter cartridge 4 first filters the impurities entering the working pump body 3, and the impurities will remain on the filter sieve plate 5 on the inner wall of the filter cartridge 4. At this time, the built-in motor 7 works to drive the rotating round block 9 to start rotating through the rotating shaft 8, and the rotating round block 9 drives the scraper 10 to start rotating after the rotation, and then the impurities accumulated on the top of the filter sieve plate 5 are scraped off to avoid accumulation, so as to enable continuous filtering. In addition, the blocking block 16 inside the discharge port 15 can be removed from time to time, and then As the rotating ball 9 rotates, the support rod 11 is fixed on the rotating ball 9, so that the support rod 11 will rotate to the discharge port 15, and the piston block 14 will be pushed out from the discharge port 15 by the elastic force of the compression spring 12 and the sliding retaining ring 13. Here, the deformation state of the compression spring 12 is set to just push the sliding retaining ring 13 to contact the inner wall of the filter cartridge 4, while there is still a certain amount of liquid material flowing inside, and then the scraped impurities are brought out from the discharge port 15, thereby achieving the cleaning effect of internal impurities, without the need to replace the filter chuck, and without the need to repeatedly disassemble and assemble the filter cartridge 4, thereby ensuring its service life.

[0025] like Figure 3 and Figure 5 As shown, the bottom of the filter cartridge 4 is connected to a connecting pipe 17; the surface of the connecting pipe 17 is threadedly connected to the top of the working pump body 3; the inner side of the sliding retaining ring 13 is slidingly connected to the surface of the support rod 11; and the end of the compression spring 12 away from the sliding retaining ring 13 is fixedly connected to the surface of the rotating block 9.

[0026] Through the above technical scheme, the top end of the connecting tube 17 is fixed to the filter cartridge 4, and the surface of the bottom end is threadedly connected to the working pump body 3, so as to realize the function of connecting the filter cartridge 4 and the working pump body 3. The sliding clamp 13 can slide on the surface of the support rod 11, and the sliding clamp 13 and the rotating block 9 are respectively fixed at both ends of the compression spring 12, so that the compression spring 12 can limit the sliding clamp 13, and can push the sliding clamp 13 to contact with the inner wall of the filter cartridge 4, and then remove the piston block from the discharge port 15.

[0027] like Figure 1 and Figure 2As shown, the bottom of the pump body placement seat 2 is fixedly connected to one side of the top of the placement base 1; the bottom of the working pump body 3 is fixedly connected to the top of the pump body placement seat 2; the top of the placement base 1 is fixedly connected to a motor placement seat 18 on one side away from the pump body placement seat 2; the top of the motor placement seat 18 is fixedly connected to a power supply motor 19; the output shaft of the power supply motor 19 is fixedly connected to a transmission shaft 20 through a coupling; the surface of the transmission shaft 20 is rotatably connected to a shaft support frame 21; the bottom of the shaft support frame 21 is fixedly connected to the top of the placement base 1; one end of the transmission shaft 20 passes through the working pump body 3 and extends to the interior of the working pump body 3; the end of the transmission shaft 20 located inside the working pump body 3 is fixedly connected to an impeller 22; the top of the filter cartridge 4 is connected to a feed flange pipe 23; the side of the working pump body 3 away from the power supply motor 19 is connected to a discharge flange pipe 24.

[0028] Through the above technical scheme, the pump body placement seat 2 is fixed to the placement base 1, and the working pump body 3 is fixed to the pump body placement seat 2, so as to realize the function of fixing the working pump body 3. In addition, the motor placement seat 18 is fixed on the side of the top of the placement base 1 away from the pump body placement seat 2, which is used to fix the power supply motor 19. When the power supply motor 19 is working, the output shaft drives the transmission shaft 20 to start rotating, and the shaft support frame 21 supports the transmission shaft 20. When the transmission shaft 20 rotates, it can drive the impeller 22 to start rotating. The rotation of the impeller 22 utilizes the centrifugal force of its rotation to realize the centrifugal effect. Finally, the feed flange pipe 23 is connected to the top of the filter cylinder 4 for feeding during work, and the discharge flange pipe 24 is used for discharging, thereby completing a complete feeding function.

[0029] Finally, it should be noted that the above implementation cases are only used to illustrate the present invention, rather than to limit the technical solutions described in the present invention; therefore, although this specification has described the present invention in detail with reference to the above-mentioned embodiments, ordinary technicians in this field should understand that the present invention can still be modified or replaced by equivalents, and all technical solutions and improvements that do not depart from the spirit and scope of the present invention should be included in the scope of the claims of the present invention; the technology not described in detail in the present invention is implemented with the existing technology.

Claims

1. A centrifugal pump filter device, comprising a placement base (1), a pump body placement seat (2), a working pump body (3) and a filter assembly, characterized in that: The filter assembly comprises a filter cartridge (4); a filter sieve disc (5) is fixedly connected to the inner wall of the filter cartridge (4); a motor cartridge (6) is fixedly connected to the bottom of the filter sieve disc (5); a built-in motor (7) is fixedly connected to the interior of the motor cartridge (6); an output shaft of the built-in motor (7) is fixedly connected to a rotating shaft (8) via a coupling; the top end of the rotating shaft (8) passes through the motor cartridge (6) and the filter sieve disc (5) in sequence and extends to the top of the filter sieve disc (5); a rotating round block (9) is fixedly connected to one end of the rotating shaft (8) located at the top of the filter sieve disc (5); the surface of the rotating round block (9) A scraper (10) is fixedly connected; a support rod (11) is fixedly connected to the surface of the rotating circular block (9) and located on one side of the scraper (10); a compression spring (12) is sleeved on the surface of the support rod (11); a sliding retaining ring (13) is fixedly connected to one end of the compression spring (12); a piston block (14) is slidably connected to the surface of the support rod (11) and located on the side of the sliding retaining ring (13) away from the compression spring (12); a discharge port (15) adapted to the piston block (14) is provided on the surface of the filter cartridge (4); a blocking block (16) is threadedly connected to the surface of the discharge port (15).

2. A centrifugal pump filter device according to claim 1, characterized in that: The bottom of the filter cartridge (4) is connected to a connecting pipe (17); the surface of the connecting pipe (17) is threadedly connected to the top of the working pump body (3); the inner side of the sliding snap ring (13) is slidably connected to the surface of the support rod (11); and one end of the compression spring (12) away from the sliding snap ring (13) is fixedly connected to the surface of the rotating round block (9).

3. A centrifugal pump filter device according to claim 1, characterized in that: The bottom of the pump body placement seat (2) is fixedly connected to one side of the top of the placement base (1); the bottom of the working pump body (3) is fixedly connected to the top of the pump body placement seat (2); and a motor placement seat (18) is fixedly connected to the side of the top of the placement base (1) away from the pump body placement seat (2).

4. A centrifugal pump filter device according to claim 3, characterized in that: The top of the motor placement seat (18) is fixedly connected to a power supply motor (19); the output shaft of the power supply motor (19) is fixedly connected to a transmission shaft (20) via a coupling; the surface of the transmission shaft (20) is rotatably connected to a shaft support frame (21); the bottom of the shaft support frame (21) is fixedly connected to the top of the placement base (1).

5. A centrifugal pump filter device according to claim 4, characterized in that: One end of the transmission shaft (20) passes through the working pump body (3) and extends into the interior of the working pump body (3); one end of the transmission shaft (20) located inside the working pump body (3) is fixedly connected to an impeller (22).

6. A centrifugal pump filter device according to claim 1, characterized in that: The top of the filter cylinder (4) is connected to a feed flange pipe (23); the side of the working pump body (3) away from the energy supply motor (19) is connected to a discharge flange pipe (24).

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