Centrifugal pump volute for improving efficiency of water pump
By setting baffles, diversion blocks, bumps, drainage grooves and counter blocks in the volute shell of the centrifugal pump, the operational instability caused by radial force changes in the volute-type centrifugal pump is solved, and more efficient water flow transmission and stable pump operation are achieved.
Patent Information
- Application Number
- CN202421137069.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-23
- Publication Date
- 2025-02-28
- Estimated Expiration
- 2034-05-23
AI Technical Summary
In a volute-shell centrifugal pump, the direction and size of the radial force change under different working conditions, resulting in an increase in alternating stress and deflection of the water pump bearing, affecting the operating stability.
A centrifugal pump volute is designed, with the inner wall of the baffle, a flow guide block, a bump, a drainage groove and a counter-reverse block. Through these components, the inner part of the volute is formed into multiple volute chambers, balances the radial force, and increases the water flow rate through the flow guide block and bump, and prevents counter-reverse blocks through the counter-reverse block.
Effectively balance radial forces, improve the operating stability and efficiency of the water pump, and avoid disorderly flow or countercurrent water flow, especially when the water flow is small.
Smart Images
Figure CN222542710U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of centrifugal pump volutes, in particular to a centrifugal pump volute for improving water pump efficiency. Background Art
[0002] In a volute centrifugal pump, the radial force of the pump refers to the radial force exerted on the impeller by the flow field around the impeller. Under standard design conditions, the liquid pressure around the impeller should be symmetrically distributed, and the radial force is theoretically zero. However, in actual operation, the working conditions of the pump are usually different from the design conditions, which breaks the radial force balance considered in the design and actually generates radial force.
[0003] However, in actual operation, when the flow rate is small, the radial force points to the position of the baffle tongue; when the flow rate is large, the radial force points to the opposite direction of the baffle tongue, which means that the direction and magnitude of the radial force will change under different working conditions. The existence of radial force will bring alternating stress to the water pump bearing and increase the deflection of the pump shaft, which will directly affect the running stability of the water pump; in view of this, we propose a centrifugal pump volute that improves the efficiency of the water pump. Utility Model Content
[0004] The purpose of the utility model is to provide a centrifugal pump volute for improving the efficiency of the water pump, so as to solve the problems raised in the above-mentioned background technology.
[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solution: a centrifugal pump volute for improving the efficiency of a water pump, comprising a volute body and a baffle, wherein the inner wall of the volute body is provided with a stabilizing component, and the stabilizing component comprises:
[0006] A baffle, the inner cavity of the volute body is provided with a baffle, and a guide block is fixedly connected to one side of the baffle away from the center of the volute body;
[0007] A protrusion is fixedly connected to a side of the baffle away from the guide block, and a drainage groove is provided on a side of the protrusion away from the baffle.
[0008] Preferably, a check block is fixedly connected to the inner wall of the volute body in a direction away from the center of the volute body.
[0009] Preferably, the direction in which the drainage groove is opened is consistent with the direction of water flow, and water can pass through the drainage groove.
[0010] Preferably, the baffles are arranged in two groups, the two groups of baffles are arranged at equal intervals from the partition tongue, one end of the baffle is close to the center of the volute body, and the other end of the baffle is far away from the center of the volute body.
[0011] Preferably, the check blocks are arranged in several groups, and the check blocks in several groups are arranged on the inner wall of the volute body, and the check blocks gradually become narrower along the water flow direction.
[0012] Preferably, the guide block is arranged on the side wall of the baffle in a spindle shape, and the guide block widens the width of the baffle away from the center of the volute body, thereby increasing the flow rate of the water.
[0013] Compared with the prior art, the utility model provides a centrifugal pump volute that improves the efficiency of the water pump, and has the following beneficial effects:
[0014] 1. The centrifugal pump volute for improving the efficiency of the water pump is provided with a baffle, a guide block, a protrusion, and a drainage groove. The baffle and the partition tongue divide the interior of the volute body into three volute chambers, which plays a role in balancing the radial force. At the same time, the side wall of the guide block is fixedly connected with the guide block. The guide block is arranged in a spindle shape on the side wall of the baffle, so that the width of the baffle away from the center of the volute body becomes wider, thereby increasing the flow rate of the water. When the impeller of the centrifugal pump passes through the protrusion, a low-pressure area is formed near the protrusion, which realizes the suction of the water flow, increases the water flow rate, and thereby improves the efficiency of the water flow through the pump body.
[0015] 2. The centrifugal pump volute for improving the efficiency of the water pump is provided with a check block. When the water flows through the check block, the passage becomes narrower and the water flow behind pushes the water in front to prevent it from flowing in the reverse direction, thereby avoiding disordered flow or even reverse flow of the water flow in the volute body when the water flow is too small. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] Figure 1 This is a schematic diagram of the main structure of the utility model;
[0017] Figure 2 This is a schematic diagram of the cross-sectional structure of the main body of the utility model;
[0018] Figure 3 This is a schematic diagram of the baffle structure of the utility model.
[0019] In the figure: 1. volute body; 2. partition tongue; 3. baffle; 4. guide block; 5. protrusion; 6. drainage groove; 7. check block. DETAILED DESCRIPTION
[0020] like Figure 1-Figure 3 As shown, the utility model provides a technical solution: a centrifugal pump volute for improving the efficiency of a water pump, comprising a volute body 1 and a baffle 2, the inner wall of the volute body 1 is provided with a stabilizing component, the stabilizing component comprises a baffle 3, a guide block 4, a protrusion 5, a drainage groove 6, and a check block 7.
[0021] In one embodiment of the utility model, the inner cavity of the volute body 1 is provided with a baffle 3, the number of the baffle 3 is provided in two groups, the two groups of baffles 3 are arranged at equal intervals from the partition tongue 2, one end of the baffle 3 is close to the center of the volute body 1, and the other end of the baffle 3 is away from the center of the volute body 1. A guide block 4 is fixedly connected to the side of the baffle 3 away from the center of the volute body 1. The guide block 4 is arranged in a spindle shape on the side wall of the baffle 3, and the guide block 4 makes the width of the baffle 3 away from the center of the volute body 1 change. The side of the baffle 3 away from the guide block 4 is fixedly connected with a protrusion 5, and the side of the protrusion 5 away from the baffle 3 is provided with a drainage groove 6, and the direction of the drainage groove 6 is consistent with the direction of the water flow, and water can pass through the drainage groove 6. The inner wall of the volute body 1 is fixedly connected with a check block 7 in the direction away from the center of the volute body 1. The number of the check blocks 7 is arranged in several groups, and several groups of check blocks 7 are arranged on the inner wall of the volute body 1, and the check blocks 7 gradually narrow along the direction of the water flow.
[0022] When the centrifugal pump rotates, the centrifugal pump draws water into the volute body 1 through the gap in the middle of the centrifugal pump volute body 1. The baffle 3 and the partition tongue 2 divide the interior of the volute body 1 into three volute chambers, which balances the radial force. At the same time, the side wall of the guide block 4 is fixedly connected with the guide block 4. The guide block 4 is spindle-shaped and is arranged on the side wall of the baffle 3, so that the width of the baffle 3 away from the center of the volute body 1 becomes wider, thereby increasing the water flow rate. When the impeller of the centrifugal pump passes through the protrusion 5, a low-pressure area is formed near the protrusion 5, which realizes the suction of water flow, increases the water flow rate, and thereby improves the efficiency of water flow through the pump body.
[0023] In addition, a check block 7 is fixedly connected to the inner wall of the volute body 1 in a direction away from the center of the volute body 1. The number of check blocks 7 is set in several groups. Several groups of check blocks 7 are arranged on the inner wall of the volute body 1. The check blocks 7 gradually widen along the direction of water flow. After the water flows through the check blocks 7, the channel becomes narrower and is pushed by the water flow behind, so that the water in front cannot flow in the opposite direction, thereby avoiding disordered flow or even backflow of water in the volute body 1 when the water flow is too small.
[0024] In the utility model, during use, when the centrifugal pump rotates, the centrifugal pump draws water into the volute body 1 through the gap in the middle of the volute body 1 of the centrifugal pump, and the baffle 3 and the partition tongue 2 divide the interior of the volute body 1 into three volute chambers, which plays a role in balancing the radial force. At the same time, the side wall of the guide block 4 is fixedly connected with the guide block 4, and the guide block 4 is arranged in a spindle shape on the side wall of the baffle 3, so that the width of the baffle 3 away from the center of the volute body 1 becomes wider, thereby making the water flow faster. When the impeller of the centrifugal pump passes through the protrusion 5, a low-pressure area is formed near the protrusion 5, so that the water flow is sucked in and the water flow rate is increased. Furthermore, after the water flow passes through the check block 7, due to the narrowing of the channel and the push of the water flow behind, the water in the front cannot flow in the opposite direction, thereby avoiding the disordered flow or even backflow of the water flow in the volute body 1 when the water flow is too small.
[0025] The above generally describes the present invention in detail, but it is obvious to a person skilled in the art that some modifications or improvements can be made to the present invention. Therefore, modifications or improvements that do not deviate from the spirit of the present invention are within the scope of protection of the present invention.
Claims
1. A centrifugal pump volute for improving water pump efficiency, comprising a volute body (1) and a baffle (2), characterized in that: The inner wall of the volute body (1) is provided with a stabilizing component, and the stabilizing component comprises: A baffle (3), the inner cavity of the volute body (1) is provided with a baffle (3), and a guide block (4) is fixedly connected to a side of the baffle (3) away from the center of the volute body (1); A convex block (5) is fixedly connected to a side of the baffle plate (3) away from the guide block (4), and a drainage groove (6) is provided on a side of the convex block (5) away from the baffle plate (3).
2. A centrifugal pump volute for improving water pump efficiency according to claim 1, characterized in that: A check block (7) is fixedly connected to the inner wall of the volute body (1) in a direction away from the center of the volute body (1).
3. The centrifugal pump volute for improving water pump efficiency according to claim 1, characterized in that: The direction in which the drainage groove (6) is opened is consistent with the direction of water flow.
4. A centrifugal pump volute for improving water pump efficiency according to claim 2, characterized in that: The number of the check blocks (7) is arranged in a plurality of groups, and the plurality of groups of the check blocks (7) are arranged on the inner wall of the volute body (1), and the check blocks (7) gradually become narrower along the direction of water flow.