High-stability centrifugal pump

Abstract

The utility model provides a high-stability centrifugal pump, and belongs to the field of pumps. The problem that water seepage is prone to occurring between a water outlet port of an existing centrifugal pump and a pipeline connecting position is solved. The high-stability centrifugal pump comprises a pump body with a water inlet port, the water inlet port of the pump body is provided with a flow slowing device, the flow slowing device comprises a flow slowing plate, a plurality of buffering strips and a flow guiding unit, the inner diameter of the water inlet port is of a step-shaped structure from inside to outside, a plurality of flow dividing holes are formed in the flow slowing plate, and the flow dividing holes are of a honeycomb structure. Each flow guide unit sequentially comprises a fixing part, a plurality of guide vanes, a flow guide cylinder and a plurality of connecting ribs from inside to outside, the connecting ribs are of a curved structure and are sequentially distributed at intervals in a spiral structure mode along the outer wall of the flow guide cylinder, and the guide vanes are sequentially distributed at intervals in a spiral structure mode along the inner wall of the flow guide cylinder. A plurality of turbulent flow protrusions of a triangular structure are arranged on the fixing piece. The utility model has the advantages of high stability and slow flow.

Description

TECHNICAL FIELD

[0001] The utility model belongs to pump field relates to a centrifugal pump especially high stability centrifugal pump. BACKGROUND

[0002] The centrifugal pump outlet and the pipeline connection place are impacted by water flow for a long time, and the traditional flange connection relies on single rubber gasket, which is easy to cause sealing failure due to vibration or pressure fluctuation, and cause water seepage. The prior art increases the bolt pretightening force or thickens the gasket, but it will cause the deformation or fatigue fracture of the flange. SUMMARY

[0003] The utility model discloses a high stability centrifugal pump to solve the above problems.

[0004] The utility model discloses a high stability centrifugal pump, including the pump body with the water inlet port, the water inlet port of pump body is provided with the slow flow device for slowing down the flow velocity impact,

[0005] The slow flow device includes a slow flow plate that can slow down the flow rate, a plurality of buffer strips embedded in the inner wall of the water inlet port, and a flow guide unit for flow diffusion.

[0006] The slow flow plate is provided with a plurality of shunt holes, and the plurality of shunt holes are arranged in a honeycomb structure on the slow flow plate.

[0007] The flow guide unit includes a fixing member, a plurality of guide vanes, a flow guide cylinder and a plurality of connecting ribs.

[0008] The plurality of guide vanes are arranged and distributed along the inner wall of the flow guide cylinder in a spiral structure, and the fixing member is provided with a plurality of turbulence protrusions in a triangular structure.

[0009] In the high stability centrifugal pump, the turbulence protrusions are evenly distributed on the outer part of the fixing member, the guide vanes and the fixing member are integrally formed at the tail end, and the turbulence protrusions and the outer part of the fixing member are integrally formed.

[0010] In the high stability centrifugal pump, the plurality of buffer strips are arranged and distributed along the inner circumferential wall of the water inlet port of the pump body in a circumferential direction, and the buffer strips are made of elastic material.

[0011] In the high stability centrifugal pump, the buffer strips are made of rubber or polyurethane, and the thickness is 1-5mm.

[0012] Compared with the prior art, the high-stability centrifugal pump has simple structure design, after the fluid enters the water outlet port through the inside of the pump body, the fluid is divided and collided by the slow flow plate and the flow dividing hole, the kinetic energy is gradually attenuated, the high-frequency vibration is absorbed by the buffer strip structure, the laminar flow structure is destroyed by the turbulence protrusion, and is converted into heat energy to dissipate, the flow guiding and diffusion are realized by cooperating with the guide vane and the connecting rib structure, the slow flow effect is realized, at the same time, the stepped structure design of the water outlet port of the pump body is used to further consume the water flow energy, the impact force at the connection with the pipeline is minimized, and the problems of water seepage and loose connection are greatly prevented. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 is a schematic diagram of the three-dimensional structure of the high-stability centrifugal pump.

[0014] Figure 2 is a schematic diagram of the local cross-sectional three-dimensional structure of the water outlet port of the high-stability centrifugal pump.

[0015] In the figure, 1 is a pump body, 2 is a water inlet port, 3 is a slow flow plate, 4 is a buffer strip, 5 is a flow dividing hole, 6 is a fixing piece, 7 is a guide vane, 8 is a flow guiding cylinder, 9 is a connecting rib, and 10 is a turbulence protrusion. DETAILED DESCRIPTION

[0016] The following is a specific embodiment of the utility model and further describes the technical scheme of the utility model in combination with the drawings, but the utility model is not limited to these embodiments.

[0017] As shown in Figure 1 , Figure 2 , the high-stability centrifugal pump comprises a pump body 1 with a water inlet port 2, the water inlet port 2 of the pump body 1 is provided with a slow flow device for reducing the impact of flow velocity, the slow flow device comprises a slow flow plate 3 for reducing the flow velocity, a plurality of buffer strips 4 inlaid in the inner wall of the water inlet port 2, and a flow guiding unit for flow guiding and diffusion, the inner diameter of the water inlet port 2 is arranged in a stepped structure from inside to outside, which is convenient for step-by-step drop to consume the water flow energy, a plurality of flow dividing holes 5 are arranged on the slow flow plate 3 in a honeycomb structure, the slow flow plate 3 and the inner wall of the water inlet port 2 are arranged in an integral molding structure, the flow guiding unit comprises a fixing piece 6, a plurality of guide vanes 7, a flow guiding cylinder 8 and a plurality of connecting ribs 9 from inside to outside, the plurality of connecting ribs 9 are arranged in a curved structure and are arranged in a spiral structure along the outer wall of the flow guiding cylinder 8, the plurality of guide vanes 7 are arranged in a spiral structure along the inner wall of the flow guiding cylinder 8, and a plurality of turbulence protrusions 10 in a triangular structure are arranged on the fixing piece 6.

[0018] The working process is as follows: after the fluid enters the water outlet port through the inside of the pump body 1, the fluid is divided and collided by the slow flow plate 3 and the flow dividing hole 5, the kinetic energy is gradually attenuated, the high-frequency vibration is absorbed by the buffer strip 4 structure, the laminar flow structure is destroyed by the disturbance convex 10, and the laminar flow structure is converted into heat energy dissipation, the flow guiding and diffusion are realized by the structure of the guide vane 7 and the connecting rib 9, the slow flow effect is realized, at the same time, the step structure design of the water outlet port of the pump body 1 is used to further consume the water flow energy, the impact force at the connection place of the pipeline is minimized, and the problems of water seepage and loose connection are greatly prevented.

[0019] Preferably, the disturbance convex 10 is uniformly distributed on the outside of the fixed part 6, the guide vane 7 is integrally formed with the tail end of the fixed part 6, the disturbance convex 10 is integrally formed with the outside of the fixed part 6, and the structure design of the disturbance convex 10 and the guide vane 7 can further scatter the vortex flow and slow down the flow speed.

[0020] Preferably, the buffer strip 4 is arranged and distributed along the inner circumferential wall of the water inlet port 2 of the pump body 1 in the circumferential direction, the buffer strip 4 is made of elastic material, the material of the buffer strip 4 is rubber or polyurethane, and the thickness of the buffer strip 4 is 1-5mm. The buffer strip 4 can absorb the impact energy of the fluid and reduce the noise.

[0021] The specific embodiments described in the present application are only illustrative of the spirit of the present application. Those skilled in the art to which the present application belongs can make various modifications or supplements to the described specific embodiments or use similar ways to replace them, but will not deviate from the spirit of the present application or exceed the scope defined by the appended claims.

[0022] Although the terms are used more in the present application, the possibility of using other terms is not excluded. These terms are used only to more conveniently describe and explain the essence of the present application; any interpretation of them as any kind of additional limitation is contrary to the spirit of the present application.

Claims

1. A high-stable centrifugal pump, characterized by, The utility model provides an inlet port (2) is provided with the slow flow device for slowing down the flow velocity impact of pump body (1) with the inlet port (2) of pump body (1); The slow flow device includes a slow flow plate (3) that can slow down the flow velocity, a plurality of buffer strips (4) inlaid in the inner wall of the inlet port (2), and a flow guide unit for flow diffusion, and the inner diameter of the inlet port (2) is arranged in a stepped structure from the inside to the outside to facilitate step-by-step drop consumption of water flow energy. The slow flow plate (3) is provided with a plurality of shunt holes (5), and the plurality of shunt holes (5) are arranged in a honeycomb structure on the slow flow plate (3), and the slow flow plate (3) and the inner wall of the inlet port (2) are arranged in an integral molding structure. The flow guide unit sequentially includes a fixing member (6), a plurality of guide vanes (7), a flow guide cylinder (8) and a plurality of connecting ribs (9) from the inside to the outside, the plurality of connecting ribs (9) are arranged in a curved structure and are sequentially and spacedly distributed along the outer wall of the flow guide cylinder (8) in a spiral structure. The plurality of guide vanes (7) are sequentially and spacedly arranged and distributed along the inner wall of the flow guide cylinder (8) in a spiral structure, and the fixing member (6) is provided with a plurality of turbulence protrusions (10) in a triangular structure.

2. A high stability centrifugal pump according to claim 1, characterized in that The plurality of turbulence protrusions (10) are uniformly distributed on the outside of the fixing member (6), wherein the guide vane (7) and the tail end of the fixing member (6) are integrally formed, and the turbulence protrusion (10) and the outside of the fixing member (6) are integrally formed.

3. A high stability centrifugal pump as claimed in claim 1, wherein, The plurality of buffer strips (4) are sequentially and spacedly arranged and distributed in the circumferential direction along the inner peripheral wall of the inlet port (2) of the pump body (1), and the buffer strip (4) is made of an elastic material.

4. A high stability centrifugal pump according to claim 3, characterized in that The material of the buffer strip (4) is rubber or polyurethane, and the thickness is 1-5 mm.

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