Rotor structure for reducing vibration noise of water pump
By machining injection holes on the outer wall of the water pump rotor and inserting counterweights, the problem of dynamic balance adjustment of integrated water pump rotors was solved, resulting in a significant reduction in vibration and noise and an improvement in equipment stability.
Patent Information
- Application Number
- CN202520538230.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-26
- Publication Date
- 2025-12-19
- Estimated Expiration
- 2035-03-26
AI Technical Summary
The integrated water pump rotor cannot be dynamically balanced by removing mass, making vibration and noise problems difficult to solve.
Injection holes are machined on the outer wall of the water pump rotor, and counterweights, such as pins and ribs, are inserted into the holes to counteract the unbalanced mass and achieve dynamic balance.
It significantly reduces the vibration and noise of the water pump, especially the first and second order noise, and improves the rotor's operational stability and equipment lifespan.
Smart Images
Figure CN223690009U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to the technical field of rotor structure, in particular to a rotor structure of reducing water pump vibration noise. BACKGROUND
[0002] Water pump as a common fluid conveying equipment, plays an important role in industrial production, agricultural irrigation, building water supply and many other fields, however, water pump often produces vibration and noise in the operation process, which not only affects the working environment, but also can cause adverse effects on the performance and life of the equipment, therefore, it has important practical significance to study how to reduce the vibration noise of water pump.
[0003] Motor rotor dynamic balance refers to adjusting the mass distribution of the rotor, so that the resultant force of centrifugal force generated by the rotor in rotation is zero, or the vibration and noise caused by centrifugal force is controlled within the allowable range, which aims to ensure that the motor rotor can run smoothly at high speed, reduce vibration, noise and bearing wear, and improve the performance and service life of the motor.
[0004] And the method of reducing dynamic unbalance mass usually has two kinds, one is through the form of adding mass, and the other is through the way of removing mass, and the integrated water pump rotor is integrally plastic formed, so it cannot adopt the way of removing mass. UTILITY MODEL CONTENT
[0005] To solve the above technical problems, the utility model provides a rotor structure of reducing water pump vibration noise, which can reduce the unbalance mass, and after the unbalance mass is offset, the vibration noise of the water pump can be significantly reduced, especially the first and second order noise.
[0006] The rotor structure of reducing water pump vibration noise comprises a water pump rotor, the water pump rotor is integrally injection molded, a plurality of injection holes and a counterweight are further included, the plurality of injection holes are respectively arranged on the upper and lower parts of the outer side wall of the water pump rotor, and the counterweight is inserted into one of the injection holes; when the water pump rotor is processed and formed, a plurality of injection holes are respectively processed on the upper and lower sides of the outer side wall of the water pump rotor, then the position of the unbalance mass point of the water pump rotor is measured on the dynamic balance tester, the counterweight is pressed into the corresponding position, the unbalance mass is balanced by adding the mass of the counterweight, so as to reduce the unbalance mass, and after the unbalance mass is offset, the vibration noise of the water pump can be significantly reduced, especially the first and second order noise.
[0007] Preferably, the counterweight includes a pin and eight groups of convex ribs, which are arranged on the outer wall of the pin in a circumferential direction and are inserted into the injection holes; the pin is pressed into the injection holes in different positions to offset the unbalanced mass, and the eight groups of convex ribs are used to fasten the pin to ensure that the water pump rotor will not fail due to loosening during operation.
[0008] Preferably, the number of the injection holes is 240, and the injection holes are arranged on the upper and lower sides of the water pump rotor in a 40*6 manner.
[0009] Preferably, the injection holes are arranged on the upper and lower sides of the water pump rotor in a 40*6 manner.
[0010] Compared with the prior art, the utility model has the beneficial effects that when the water pump rotor is formed, a plurality of injection holes are formed on the upper and lower sides of the outer wall of the water pump rotor, then the position of the unbalanced mass point of the water pump rotor is measured on a dynamic balancing tester, the counterweight is pressed into the corresponding position, the unbalanced mass is balanced by adding the mass of the counterweight, so that the effect of reducing the unbalanced mass is achieved, and after the unbalanced mass is offset, the vibration noise of the water pump is significantly reduced, especially the first and second order noises. BRIEF DESCRIPTION OF DRAWINGS
[0011] Figure 1 is the axonometric structure schematic diagram of the utility model;
[0012] Figure 2 is the axonometric structure schematic diagram of the water pump rotor and the injection hole and the like connection;
[0013] Figure 3 is the structure schematic diagram of the injection hole and the counterweight and the like connection;
[0014] Figure 4 is the axonometric local structure schematic diagram of the pin and the convex rib;
[0015] Figure 5 is the enlarged local structure schematic diagram of A.
[0016] Markings in the drawings: 1, water pump rotor; 2, injection hole; 3, counterweight; 4, pin; 5, convex rib; 6, arc surface. DETAILED DESCRIPTION
[0017] In order to facilitate the understanding of the utility model, the utility model will be described more fully below with reference to the relevant drawings. The utility model can be realized in many different forms, and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the utility model more thorough and comprehensive.
[0018] Embodiment 1
[0019] As Figures 1 to 5 shown, the utility model discloses a rotor structure of reducing water pump vibration noise, including water pump rotor 1, and water pump rotor 1 is integrative injection molding, still include multiple sets of injection hole 2 and counterweight 3, and multiple sets of injection hole 2 are arranged respectively on the upper and lower two parts of the lateral wall of water pump rotor 1, and counterweight 3 is inserted into one set of injection hole 2 inside,
[0020] As Figure 4 shown, the counterweight 3 includes a pin 4 and eight groups of convex ribs 5, and the eight groups of convex ribs 5 are circumferentially arranged on the lateral wall of the pin 4, and the pin 4 is inserted into the injection hole 2,
[0021] In the embodiment, when the water pump rotor 1 is processed and formed, multiple injection holes 2 are processed on the upper and lower sides of the lateral wall of the water pump rotor 1, then the water pump rotor 1 is pressed into the counterweight 3 at the corresponding position by measuring the position of the unbalanced mass point on the dynamic balance tester, the unbalanced mass is balanced by adding the mass of the counterweight 3, thereby achieving the effect of reducing the unbalanced mass.
[0022] Example 2
[0023] On the basis of example 1, as Figure 2 shown, the utility model discloses a rotor structure of reducing water pump vibration noise, the number of injection hole 2 is 240, and is respectively evenly distributed in the upper and lower sides of water pump rotor 1 with 40 * 6,
[0024] As Figure 4 shown, it further includes an arc surface 6, and the arc surface 6 is arranged at the end of the pin 4,
[0025] In the embodiment, the pin 4 is pressed into the injection hole 2 at different positions to achieve the effect of offsetting the unbalanced mass, and the outer diameter of the pin 4 is processed with eight ribs to play a fastening role, so that the water pump rotor 1 does not fail due to loosening during operation, and the offsetting effect of the unbalanced mass is improved.
[0026] The utility model discloses a rotor structure of reducing water pump vibration noise, which, when working, when the water pump rotor 1 is processed and formed, multiple injection holes 2 are processed on the upper and lower sides of the lateral wall of the water pump rotor 1, then the water pump rotor 1 is pressed into the counterweight 3 at the corresponding position by measuring the position of the unbalanced mass point on the dynamic balance tester, the unbalanced mass is balanced by adding the mass of the counterweight 3, thereby achieving the effect of reducing the unbalanced mass.
[0027] The above merely is the preferred implementation manner of the present application, and it should be noted that, for the ordinary skilled in the art, without departing from the technical principles of the present application, a number of improvements and modifications can be made, and these improvements and modifications should also be considered as the protection scope of the present application.
Claims
1. A rotor structure for reducing vibration and noise in a water pump, comprising a water pump rotor (1), wherein the water pump rotor (1) is integrally injection molded; characterized in that, It also includes multiple sets of injection holes (2) and counterweights (3). The multiple sets of injection holes (2) are respectively set on the upper and lower parts of the outer side wall of the water pump rotor (1), and the counterweights (3) are inserted into one set of injection holes (2).
2. The rotor structure for reducing water pump vibration and noise as described in claim 1, characterized in that, The counterweight (3) includes a pin (4) and eight sets of ribs (5). The eight sets of ribs (5) are arranged circumferentially on the outer wall of the pin (4). The pin (4) is inserted into the injection hole (2).
3. The rotor structure for reducing water pump vibration and noise as described in claim 1, characterized in that, The number of injection holes (2) is 240, and they are evenly distributed on the upper and lower sides of the water pump rotor (1) in a 40*6 pattern.
4. The rotor structure for reducing water pump vibration and noise as described in claim 2, characterized in that, It also includes an arc-shaped surface (6), which is located at the end of the pin (4).