Impeller capable of reducing cavitation
By setting a buffer mechanism on the impeller and utilizing the wavy structure of the ring to decelerate the fluid, the cavitation problem caused by bubbles at the water pump inlet is solved, and the durability of the impeller and noise reduction are achieved.
Patent Information
- Application Number
- CN202422148381.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-03
- Publication Date
- 2025-10-28
- Estimated Expiration
- 2034-09-03
AI Technical Summary
When the negative pressure at the water pump inlet is too low, the high liquid temperature causes a large number of bubbles to be generated, resulting in serious cavitation and reducing the service life of the impeller.
A buffer mechanism is set on the impeller, including a disc and a deceleration mechanism. The wavy structure of the ring decelerates the fluid, reduces the fluid speed and turbulence, reduces bubbles, and reduces cavitation.
It effectively reduces bubbles in the fluid, reduces cavitation of the impeller, extends the service life of the impeller, reduces noise and simplifies production and processing.
Smart Images
Figure CN223482962U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of water pumps, and in particular to an impeller that reduces cavitation. Background Technology
[0002] The impeller is a crucial component of a water pump. Its rotation creates negative pressure at the pump inlet, drawing in liquid and thus transporting it. However, in certain situations, such as when the negative pressure at the pump inlet is too low, it can lower the boiling point of the liquid. Therefore, when the temperature of the liquid is high, a large amount of vapor is generated at the pump inlet, resulting in numerous air bubbles. When these bubble-containing liquids pass through the impeller, the pressure at the impeller increases rapidly, causing the bubbles to burst quickly. This impacts and damages the impeller, leading to cavitation and reducing its lifespan. Therefore, an impeller design that reduces cavitation is needed. Utility Model Content
[0003] To solve the above-mentioned technical problems, this utility model provides an impeller with reduced cavitation that can reduce air bubbles in the conveyed fluid, reduce the fluid velocity, reduce fluid cavitation on the impeller, ensure the service life of the impeller, is easy to use, and has high practicality.
[0004] This utility model discloses an impeller for reducing cavitation, comprising an impeller with a liquid inlet at its upper part; and a buffer mechanism installed at the upper end of the impeller, which has a buffering function. When the impeller is in use, as fluid enters the impeller through the upper part, it is buffered by the buffer mechanism, reducing the fluid velocity, local pressure drop and turbulence, and reducing air bubbles in the fluid. The fluid can then be used after entering the impeller. Due to the reduced fluid velocity and fewer air bubbles, cavitation is reduced, ensuring the impeller's service life. It is convenient to use and highly practical.
[0005] Preferably, the buffer mechanism includes a disc and a deceleration mechanism. The disc is fixedly installed on the upper end of the impeller, and the deceleration mechanism is installed on the upper end of the disc. The deceleration mechanism has a deceleration function. When the fluid passes through the deceleration mechanism, the deceleration mechanism reduces the speed of the fluid, reduces the degree of turbulence of the fluid, and reduces the number of bubbles in the fluid. After deceleration, the fluid enters the impeller and is continued to be transported, thereby reducing the cavitation of the impeller.
[0006] Preferably, the deceleration mechanism includes a ring, which is fixedly mounted on the upper end of the disc, and the upper end of the ring is wavy. With this configuration, when the fluid passes through the disc, the wavy upper end of the ring slows down the fluid upon contact with it, reducing air bubbles in the fluid and decreasing noise and cavitation during pump operation. Furthermore, the structure is simple, requiring only the addition of a corresponding structure to the injection mold during production, facilitating manufacturing and processing.
[0007] Preferably, the depth of the wave on the upper part of the ring is 0.2-0.4 mm.
[0008] Preferably, the depth of the wave on the upper part of the ring is 0.3 mm.
[0009] Preferably, the number of waves on the upper part of the ring is 20.
[0010] Compared with the prior art, the beneficial effects of this utility model are: it can reduce air bubbles in the conveyed fluid, reduce the fluid speed, reduce fluid cavitation on the impeller, ensure the service life of the impeller, and is convenient to use and highly practical. Attached Figure Description
[0011] Figure 1 This is an exploded view of this utility model;
[0012] Figure 2 This is a schematic diagram of the first isometric structure of this utility model;
[0013] Figure 3 This is a schematic diagram of the second isometric structure of this utility model;
[0014] Figure 4 This is a schematic diagram of the main structure of this utility model;
[0015] Figure 5 This is a top view of the structure of this utility model.
[0016] The attached diagram is labeled as follows: 1. Impeller; 2. Disk; 3. Ring. Detailed Implementation
[0017] To facilitate understanding of this utility model, a more complete description will be given below with reference to the accompanying drawings. This utility model can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to make the disclosure of this utility model more thorough and complete.
[0018] Example
[0019] like Figures 1 to 5The impeller of this utility model for reducing cavitation includes an impeller 1 and a buffer mechanism. The upper part of the impeller 1 is provided with a liquid inlet, and the buffer mechanism is installed at the upper end of the impeller 1. The buffer mechanism has a buffering function. When the impeller 1 is in use, when the fluid enters the impeller through the upper part of the impeller 1, the fluid is buffered by the buffer mechanism, which reduces the fluid velocity, reduces the local pressure drop and turbulence in the fluid, and reduces the number of air bubbles in the fluid. After that, the fluid can be used after entering the impeller 1. Because the fluid velocity is reduced and the number of air bubbles in the fluid is reduced, cavitation phenomenon is reduced, ensuring the service life of the impeller 1. It is convenient to use and highly practical.
[0020] like Figure 2 The buffer mechanism includes a disc 2 and a speed reduction mechanism. The disc 2 is fixedly installed on the upper end of the impeller 1, and the speed reduction mechanism is installed on the upper end of the disc 2. The speed reduction mechanism has a speed reduction function. When the fluid passes through the speed reduction mechanism, the speed of the fluid is reduced by the speed reduction mechanism, the turbulence of the fluid is reduced, and the bubbles in the fluid are reduced. After the fluid is slowed down, it enters the impeller 1 and is continued to be transported, which reduces the cavitation of the impeller 1.
[0021] like Figure 1 and Figure 2 The deceleration mechanism includes a ring 3, which is fixedly installed on the upper end of the disc 2. The upper end of the ring 3 is wavy. With the above arrangement, when the fluid passes through the disc 2, the upper end of the ring 3 is wavy, so the fluid is slowed down by the ring 3 when it comes into contact with the ring 3, reducing air bubbles in the fluid and reducing noise and cavitation during the operation of the water pump. Moreover, the structure is simple, and only the corresponding structure needs to be added to the injection mold during production, which is convenient for production and processing.
[0022] The depth of the upper wave of ring 3 is 0.3mm, and the number of upper waves of ring 3 is 20.
[0023] In summary, the main beneficial effects of this utility model are as follows:
[0024] 1. It reduces the fluid velocity, reduces air bubbles in the fluid, reduces pump noise, and reduces impeller cavitation.
[0025] 2. It is easy to produce and process; only the corresponding structure needs to be added to the injection mold.
[0026] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.
Claims
1. An impeller for reducing cavitation, comprising an impeller (1), wherein a liquid inlet is provided at the upper part of the impeller (1); characterized in that, It also includes a buffer mechanism, which is installed at the upper end of the impeller (1) and has a buffering function; The buffer mechanism includes a disc (2) and a deceleration mechanism. The disc (2) is fixedly installed on the upper end of the impeller (1), and the deceleration mechanism is installed on the upper end of the disc (2). The deceleration mechanism has a deceleration function. The deceleration mechanism includes a ring (3), which is fixedly installed on the upper end of the disc (2). The upper end of the ring (3) is wavy.
2. The impeller for reducing cavitation as described in claim 1, characterized in that, The depth of the wave on the upper part of the ring (3) is 0.2-0.4 mm.
3. The impeller for reducing cavitation as described in claim 2, characterized in that, The depth of the wave on the upper part of the ring (3) is 0.3 mm.
4. The impeller for reducing cavitation as described in claim 3, characterized in that, The number of waves on the upper part of the ring (3) is 20.