Centrifugal pump with stable fluid

Abstract

The utility model relates to the technical field of centrifugal pumps, in particular to a centrifugal pump with stable fluid. Comprising a base, a motor and a centrifugal pump body are fixed to the upper end of the base, an output shaft of the motor is concentrically and fixedly connected with a rotating shaft of the centrifugal pump body, a hollow cylindrical shell is fixed to the base, an inlet pipe is fixed to one side of the shell, a communicating pipe is fixed to the other side of the shell, the inlet pipe and the communicating pipe are communicated with the interior of the shell, and the communicating pipe and the inlet pipe are concentric; the communicating pipe is fixedly communicated with the inlet end of the centrifugal pump, a rotating disc is concentrically, rotationally and hermetically connected in the shell, a driving unit for driving the rotating disc to rotate is arranged on the shell, a plurality of threaded holes are uniformly formed in the circumference of the rotating disc, one threaded hole is concentric with the inlet pipe, and dispersing assemblies are hermetically connected in the threaded holes in a threaded manner. And the dispersing assembly can disperse the entered fluid and can reduce the change speed of the flowing direction of the fluid, so that the conveying stability of the fluid is controlled.

Description

Technical Field

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

[0002] The centrifugal pump forms effective rotation through the connection between the assembled impeller and the output shaft of the motor, and cooperates with the pressure difference generated by the rotation of the impeller inside the centrifugal pump housing to form effective extrusion, and conveys the fluid through the connected delivery pipe to the output pipe, which can effectively improve the stability of the device. However, there are still some problems in the existing centrifugal pumps during use.

[0003] A patent document with the publication number CN114135491A discloses a multistage centrifugal pump for transporting fluids. It includes a pump housing with an inlet and an outlet for the fluid, a first-stage impeller and a second-stage impeller for transporting the fluid from the inlet to the outlet, and a shaft for rotating each impeller around the axial direction. Each impeller is configured as a double-suction impeller, having a first suction side, a second suction side for receiving the fluid, and a discharge side for discharging the fluid. The discharge side of the first-stage impeller includes two separate discharge ports, namely a first discharge port for discharging the fluid into a first crossover pipeline and a second discharge port for discharging the fluid into a second crossover pipeline. The first crossover pipeline is in fluid communication with the first suction side of the second-stage impeller, and the second crossover pipeline is in fluid communication with the second suction side of the second-stage impeller. However, during use, due to the multi-stage pressurization method, it is easy to cause unstable fluid at the fluid inlet, affecting the smoothness during fluid transportation, prone to cavitation, and affecting the pressure at the water inlet.

[0004] To solve the above problems, a patent document with the publication number CN221257156U discloses a centrifugal pump with stable fluid. This centrifugal pump with stable fluid adjusts the position of the moving plate inside the support assembly through the cooperation of the assembled turntable, connecting rod, and moving rod, and then the grid grille assembled and clamped therein effectively disperses the incoming water flow and reduces the too-fast change in the flow direction of the water flow in the pipeline, thereby controlling the stability of fluid transportation. There is a manually adjustable moving block, which drives a clamping block in cooperation with the assembled control rod and is matched with the clamping groove on the grid grille to stably fix the grid grille on the moving plate. And when the grid grille is damaged or severely worn, it can be effectively replaced. Thus, when replacing, the use of the assembled ejector block is cooperated to facilitate the improvement of the convenience of grid grille disassembly. However, in the technical solution disclosed in this patent, when replacing the grid grille, the fluid enters the centrifugal pump through the through hole, and the incoming fluid cannot be dispersed during the process of cleaning or replacing the grid grille. Summary of the Utility Model

[0005] The technical problem to be solved by the utility model is a centrifugal pump that can disperse the incoming fluid when replacing or cleaning the grille plate. At the same time, it is relatively convenient to clean the grille plate without disassembling the grille plate.

[0006] In order to achieve the above object, the technical solution provided by the utility model is:

[0007] A centrifugal pump with stable fluid flow, including a base, on which an electric motor and a centrifugal pump body are fixedly arranged at the upper end. The output shaft of the electric motor is fixedly and concentrically connected to the rotating shaft of the centrifugal pump body. A hollow cylindrical shell is fixedly arranged on the base. A feed pipe is fixedly arranged on one side of the shell, and a communicating pipe is fixedly arranged on the other side of the shell. The feed pipe and the communicating pipe are communicated with the inside of the shell. The communicating pipe is concentric with the feed pipe and is fixedly and communicatively connected to the inlet end of the centrifugal pump body. A rotating disc is rotatably and sealingly connected concentrically in the shell. A driving unit for driving the rotating disc to rotate is arranged on the shell. A plurality of threaded holes are evenly distributed in a circumferential manner on the rotating disc. The axis of the feed pipe passes through the threaded holes and follows the movement track of the axis of the threaded holes when the rotating disc rotates. One of the threaded holes is concentric with the feed pipe. Dispersion components are threadedly and sealingly connected in the threaded holes. A sleeve is fixedly arranged on one side of the shell, and a discharge pipe is fixedly arranged on the other side of the shell. The sleeve and the discharge pipe are communicated with the inside of the shell. The sleeve is concentric with the discharge pipe and is concentric with one of the threaded holes. A flushing component is detachably, fixedly and sealingly connected in the sleeve. The axis of the sleeve passes through the threaded holes and follows the movement track of the axis of the threaded holes when the rotating disc rotates; It also includes a disassembly tool for disassembling the dispersion components.

[0008] Specifically, sealing gaskets are fixedly and sealingly connected to both the left and right end faces of the rotating disc. The rotating disc is rotationally and sealingly connected to the inner walls on both sides of the shell through the sealing gaskets. The sealing gaskets are provided with openings concentric with the threaded holes.

[0009] Specifically, the driving unit includes a motor, which is fixedly arranged on the shell, concentric with the rotating disc, and the output shaft of the motor is fixedly and concentrically connected to the rotating disc.

[0010] Specifically, the dispersion component includes a screw sleeve, which is threadedly and sealingly connected in the threaded hole, and a grille plate is fixedly arranged in the screw sleeve.

[0011] Specifically, a plurality of blind holes are evenly distributed in a circumferential manner at one end of the screw sleeve facing the sleeve.

[0012] Specifically, the disassembly tool includes an inserting disc, which can be inserted into the threaded hole concentric with the sleeve through the sleeve. Inserting rods corresponding to the blind holes on the screw sleeve are fixedly arranged on the inserting disc, and the inserting rods can be inserted into the blind holes. A handle is fixedly arranged on the inserting disc.

[0013] Specifically, the flushing assembly includes a distribution plate. The interior of the distribution plate is hollow. The distribution plate is hermetically inserted into the sleeve. One end of the flushing pipe is fixedly connected to the distribution plate concentrically. The flushing pipe is communicated with the interior of the distribution plate. The flushing pipe is concentric with the distribution plate. The other end of the flushing pipe extends to the outside of the sleeve. A plurality of spray holes are formed in one end of the distribution plate facing the threaded hole. A compression sleeve is threadedly and hermetically connected in the sleeve. The flushing pipe penetrates through the compression sleeve, and the flushing pipe is in sealing contact with the inner edge of the compression sleeve.

[0014] Specifically, a cover is detachably and fixedly sealed to the discharge pipe.

[0015] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0016] 1. By providing a turntable and a plurality of dispersion components on the turntable in this device, after the turntable rotates by a set angle, one dispersion component will be communicated with the inlet pipe. The dispersion component can disperse the incoming fluid, reduce the speed of the change in the fluid flow direction, and thus control the stability of the fluid transportation.

[0017] 2. When cleaning the grille plate, the grille plate to be cleaned is rotated to correspond to the sleeve, and then the cover is opened so that the water pump is communicated with the flushing pipe. The high-pressure water discharged from the water pump can flush the grille plate corresponding to the sleeve through the flushing pipe, the distribution plate and the spray holes, and the flushed water is discharged from the discharge pipe. When flushing the grille plate, another grille plate corresponds to the inlet pipe, and the grille plate corresponding to the inlet pipe can maintain the dispersion of the fluid.

[0018] 3. After removing the compression sleeve, the flushing pipe and the distribution plate can be taken out of the sleeve. The dispersion component corresponding to the sleeve can be disassembled by using a disassembly tool, and then a new dispersion component can be installed in the threaded hole corresponding to the sleeve. The dispersion component is convenient to replace.

[0019] 4. Since the turntable and the housing are rotationally and hermetically connected through a gasket, when flushing the dispersion component corresponding to the sleeve, the dispersion component corresponding to the inlet pipe can maintain the dispersion of the incoming fluid. When replacing or flushing the dispersion component, the downtime of the centrifugal pump body can be reduced, and the efficiency of the fluid transportation can be maintained. Description of the Drawings

[0020] Figure 1 is the front view of the present utility model.

[0021] Figure 2 is the left view of the housing.

[0022] Figure 3 is Figure 2 the sectional view taken along the line A-A in

[0023] Figure 4 is Figure 2 the sectional view taken along the line B-B in

[0024] Figure 5 It is a schematic diagram of a disassembling tool.

[0025] The names of the components in the attached drawings are as follows: 1. Base, 2. Motor, 3. Connecting pipe, 4. Housing, 5. Inlet pipe, 6. Motor, 7. Flushing pipe, 8. Compression sleeve, 9. Sleeve, 10. Drain pipe, 11. Cover, 12. Turntable, 13. Sealing gasket, 14. Threaded hole, 15. Threaded sleeve, 16. Grille plate, 17. Blind hole, 18. Plug rod, 19. Handle, 20. Distribution plate, 21. Spray hole, 22. Insertion plate; 23. Centrifugal pump body. Specific embodiments

[0026] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments.

[0027] Embodiment 1: Refer to Figures 1-4 As shown, a centrifugal pump with stable fluid includes a base 1. A motor 2 and a centrifugal pump body 23 are fixedly arranged at the upper end of the base 1. The output shaft of the motor 2 is fixedly and concentrically connected to the rotating shaft of the centrifugal pump body 23.

[0028] A hollow cylindrical housing 4 is fixedly arranged on the base 1. An inlet pipe 5 is fixedly arranged on one side of the housing 4, and a connecting pipe 3 is fixedly arranged on the other side of the housing 4. The inlet pipe 5 and the connecting pipe 3 are communicated with the inside of the housing 4. The connecting pipe 3 is concentric with the inlet pipe 5, and the connecting pipe 3 is fixedly and communicatively connected to the inlet end of the centrifugal pump body 23.

[0029] A turntable 12 is rotatably and sealingly connected concentrically inside the housing 4. Specifically, sealing gaskets 13 are fixedly and sealingly connected to the left and right end faces of the turntable 12, and the turntable 12 is rotatably and sealingly connected to the inner walls on the left and right sides of the housing 4 through the sealing gaskets 13.

[0030] A driving unit for driving the turntable 12 to rotate is arranged on the housing 4. Specifically, the driving unit includes a motor 6. The motor 6 is fixedly arranged on the housing 4. The motor 6 is concentric with the turntable 12, and the output shaft of the motor 6 is fixedly and concentrically connected to the turntable 12.

[0031] A plurality of threaded holes 14 are evenly distributed in a circumferential manner on the turntable 12, and through holes concentric with the threaded holes 14 are arranged on the sealing gasket 13. The axis of the inlet pipe 5 passes through the movement locus of the axis of the threaded hole 14 when the threaded hole 14 rotates with the turntable 12. One of the threaded holes 14 is concentric with the inlet pipe 5, and a dispersion assembly is threadedly and sealingly connected in each threaded hole 14.

[0032] The dispersion assembly includes a threaded sleeve 15. The threaded sleeve 15 is threadedly and sealingly connected in the threaded hole 14, and a grille plate 16 is fixedly arranged inside the threaded sleeve 15.

[0033] The fluid passes through the inlet pipe 5, the threaded hole 14 concentric with the inlet pipe 5, the grille plate 16 corresponding to the inlet pipe 5, the connecting pipe 3 and enters the centrifugal pump body 23. When the fluid passes through the grille plate 16 corresponding to the inlet pipe 5, the fluid is dispersed, so that the speed of the change in the fluid flow direction can be reduced, thereby controlling the stability of the fluid transportation. At the same time, the grille plate 16 can filter the fluid to prevent large impurities from entering the centrifugal pump body 23 and blocking the internal channels of the pump.

[0034] A sleeve 9 is fixedly provided on one side of the housing 4, and a discharge pipe 10 is fixedly provided on the other side of the housing 4. A cover 11 is detachably and fixedly sealed to the discharge pipe 10. The sleeve 9 and the discharge pipe 10 are communicated with the inside of the housing 4. The sleeve 9 and the discharge pipe 10 are concentric, the sleeve 9 and one of the threaded holes 14 are concentric, and a flushing assembly is detachably and fixedly sealed in the sleeve 9. The axis of the sleeve 9 passes through the threaded hole 14 and follows the movement track of the axis of the threaded hole 14 when the turntable 12 rotates.

[0035] The flushing assembly includes a distribution plate 20. The inside of the distribution plate 20 is hollow. The distribution plate 20 is hermetically inserted into the sleeve 9. One end of the flushing pipe 7 is fixedly connected concentrically with the distribution plate 20. The flushing pipe 7 is communicated with the inside of the distribution plate 20. The flushing pipe 7 and the distribution plate 20 are concentric. The other end of the flushing pipe 7 extends to the outside of the sleeve 9. A plurality of spray holes 21 are provided on one end of the distribution plate 20 facing the threaded hole 14. A compression sleeve 8 is threadedly and hermetically connected inside the sleeve 9. The flushing pipe 7 passes through the compression sleeve 8, and the flushing pipe 7 is in sealing contact with the inner edge of the compression sleeve 8.

[0036] When cleaning the grille plate 16, the motor 6 drives the turntable 12 to rotate, so that the grille plate 16 to be cleaned rotates to correspond to the sleeve 9.

[0037] In this embodiment, the number of the threaded holes 14 is three. After the motor 6 drives the turntable 12 to rotate 120 degrees, the grille plate 16 corresponding to the inlet pipe 5 is replaced.

[0038] Then, the cover 11 is opened so that the water pump is communicated with the flushing pipe 7. The high-pressure water discharged from the water pump can wash the grille plate 16 corresponding to the sleeve 9 through the flushing pipe 7, the distribution plate 20 and the spray holes 21, and the washed water is discharged from the discharge pipe 10. When washing the grille plate 16 corresponding to the sleeve 9, the grille plate 16 corresponding to the inlet pipe 5 can maintain the dispersion of the fluid.

[0039] Since the turntable 12 and the housing 4 are rotationally and hermetically connected through a gasket 13, when flushing the grille plate 16 corresponding to the sleeve 9, the grille plate 16 corresponding to the inlet pipe 5 can maintain the dispersion of the incoming fluid. When replacing or flushing the grille plate 16, the downtime of the centrifugal pump body 23 can be reduced, and the efficiency of fluid transportation can be maintained.

[0040] Embodiment 2: On the basis of Embodiment 1, with reference toFigure 4 and Figure 5 As shown in Figure 5 , a centrifugal pump with stable fluid also includes a disassembly tool for disassembling the dispersion component. A plurality of blind holes 17 are evenly distributed in the circumferential direction at one end of the screw sleeve 15 facing the sleeve 9. The disassembly tool includes an insertion plate 22. The insertion plate 22 can be inserted into the threaded hole 14 concentric with the sleeve 9 through the sleeve 9. Insertion rods 18 corresponding to the blind holes 17 on the screw sleeve 15 are fixed on the insertion plate 22. The insertion rods 18 can be inserted into the blind holes 17. A handle 19 is fixed on the insertion plate 22.

[0041] After the compression sleeve 8 is disassembled, the flushing pipe 7 and the distribution plate 20 can be taken out from the sleeve 9. The insertion plate 22 is inserted into the threaded hole 14 corresponding to the sleeve 9 through the sleeve 9. Then the insertion rods 18 are inserted into the blind holes 17 on the screw sleeve 15 corresponding to the sleeve 9. The insertion plate 22 is rotated through the handle 19. The insertion plate 22 drives the screw sleeve 15 corresponding to the sleeve 9 to rotate through the insertion rods 18. The dispersion component corresponding to the sleeve 9 can be disassembled by using the disassembly tool. Then a new dispersion component can be installed in the threaded hole 14 corresponding to the sleeve 9. The replacement of the dispersion component is convenient.

[0042] The above are only the preferred embodiments of the present invention, and are not intended to limit the present invention. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A fluid-stable centrifugal pump, comprising a base (1), a motor (2) and a centrifugal pump body (23) being fixed to the upper end of the base (1), an output shaft of the motor (2) being coaxially fixedly connected to a rotating shaft of the centrifugal pump body (23), characterized in that: A hollow cylindrical shell (4) is fixed on the base (1), an inlet pipe (5) is fixed on one side of the shell (4), and a connecting pipe (3) is fixed on the other side of the shell (4), the inlet pipe (5) and the connecting pipe (3) are connected to the inside of the shell (4), the connecting pipe (3) and the inlet pipe (5) are concentric, and the connecting pipe (3) is fixedly connected to the inlet end of the centrifugal pump body (23), a turntable (12) is coaxially connected to the shell (4) in a sealing manner, a driving unit for driving the turntable (12) to rotate is provided on the shell (4), a plurality of threaded holes (14) are evenly distributed on the circumference of the turntable (12), the axis of the inlet pipe (5) passes through the threaded holes (14), and when the turntable (12) rotates, the threaded holes (14) are rotated. ) axis movement trajectory, one of the threaded holes (14) is concentric with the inlet pipe (5), a dispersion component is threadedly sealed in the threaded holes (14), a sleeve (9) is fixed on one side of the shell (4), a discharge pipe (10) is fixed on the other side of the shell (4), the sleeve (9) and the discharge pipe (10) are connected to the inside of the shell (4), the sleeve (9) and the discharge pipe (10) are concentric, the sleeve (9) and one of the threaded holes (14) are concentric, a flushing component is detachably fixedly sealed in the sleeve (9), and the axis of the sleeve (9) passes through the threaded hole (14) and follows the movement trajectory of the axis of the threaded hole (14) when the rotating disk (12) rotates; and also includes a disassembly tool for disassembling the dispersion component.

2. A fluid-stable centrifugal pump according to claim 1, characterized in that: The left and right end surfaces of the turntable (12) are fixedly sealed with sealing gaskets (13). The turntable (12) is rotatably sealed with the inner walls of the left and right sides of the housing (4) through the sealing gaskets (13). The sealing gaskets (13) are provided with openings concentric with the threaded holes (14).

3. A fluid-stable centrifugal pump according to claim 1, characterized in that: The driving unit comprises a motor (6), the motor (6) is fixed on the housing (4), the motor (6) is concentric with the turntable (12), and the output shaft of the motor (6) is concentrically fixedly connected with the turntable (12).

4. A fluid-stable centrifugal pump according to claim 1, characterized in that: The dispersion component comprises a screw sleeve (15), the screw sleeve (15) is threadedly sealed in the threaded hole (14), and a grid plate (16) is fixed in the screw sleeve (15).

5. A fluid-stable centrifugal pump according to claim 4, characterized in that: The screw sleeve (15) has a plurality of blind holes (17) evenly distributed around one end thereof facing the sleeve (9).

6. A fluid-stable centrifugal pump according to claim 5, characterized in that: The disassembly tool comprises an insert plate (22), which can be inserted into a threaded hole (14) concentric with the sleeve (9) through a sleeve (9), an insert rod (18) corresponding to a blind hole (17) on a threaded sleeve (15) is fixed on the insert plate (22), the insert rod (18) can be inserted into the blind hole (17), and a handle (19) is fixed on the insert plate (22).

7. A fluid-stable centrifugal pump according to claim 1, characterized in that: The flushing assembly comprises a distribution plate (20), the distribution plate (20) is hollow inside, the distribution plate (20) is sealed and inserted in the sleeve (9), one end of the flushing pipe (7) is fixedly connected to the distribution plate (20) concentrically, the flushing pipe (7) is communicated with the inside of the distribution plate (20), the flushing pipe (7) is concentric with the distribution plate (20), the other end of the flushing pipe (7) extends to the outside of the sleeve (9), a plurality of spray holes (21) are opened on one end of the distribution plate (20) facing the threaded hole (14), the sleeve (9) is sealedly connected with a compression sleeve (8) through the internal thread, the flushing pipe (7) passes through the compression sleeve (8), and the flushing pipe (7) is in sealing contact with the inner edge of the compression sleeve (8).

8. A fluid-stable centrifugal pump according to claim 1, characterized in that: The row pipe (10) is detachably fixedly and hermetically connected to a sealing cover (11).

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