Anti-reverse impeller

Abstract

The utility model relates to a kind of anti-reverse impeller, including impeller connecting part, flow limiting panel and more than one arc-shaped guiding water leaf panel. Impeller connecting part has mounting hole, can be installed on arbitrary shaft;Flow limiting panel is set on impeller connecting part;Arc-shaped guiding water leaf panel is vertically installed on flow limiting panel, and it is circumferentially distributed. Flow limiting panel is respectively provided with notch on the two sides of each arc-shaped guiding water leaf panel, to improve the elasticity of flow limiting panel. Compared with prior art, the utility model optimizes notch position, retains the connecting structure of the bottom of guide vane, improves the overall strength and impact resistance of guide vane, thereby improves anti-reverse effect and service life.

Description

Technical Field

[0001] This utility model relates to an impeller, specifically an anti-reverse impeller. Background Technology

[0002] As a key component in fluid equipment, the impeller is widely used in pumps, fans, and various rotating fluid devices. Its performance directly affects the efficiency and stability of the entire machine. In specific applications, especially those driven by synchronous motors, there is a risk of reverse rotation when the power supply is interrupted or a sudden failure occurs. This can lead to fluid backflow, system pressure fluctuations, or even damage to the impeller structure. Therefore, various impeller structures with anti-reverse rotation functions have emerged on the market. Their basic principle is to generate resistance during reverse rotation by setting guide and obstruction surfaces in a certain direction, thereby suppressing the reverse rotation phenomenon.

[0003] For example, existing technology discloses an impeller structure for preventing synchronous motor reversal (such as CN220396080U). This impeller includes an impeller connection part, a flow-limiting panel, and multiple arc-shaped guide vane panels. The arc-shaped guide vane panels are arranged along the circumference of the flow-limiting panel, and their bottoms are connected to the flow-limiting panel. To improve the elasticity of the flow-limiting panel, this solution provides a cut at the corresponding position at the bottom of each arc-shaped guide vane panel, thereby improving the overall flexibility to a certain extent and mitigating the impact caused by reversal. However, in this structure, the cut is located directly at the bottom connection of the arc-shaped guide vane panels, which can easily weaken the structural strength of this part, and may lead to potential cracks or breakages during long-term operation.

[0004] Meanwhile, traditional anti-reverse impellers primarily focus on flow restriction, neglecting the overall structural strength and service life of the impeller. Especially under continuous, high-frequency, and repetitive operating conditions, insufficient rigidity or structural fatigue often leads to guide vane deformation, jamming, or even loss of anti-reverse function. Therefore, effectively improving the strength and operational stability of the guide vane panel while ensuring anti-reverse performance has become a pressing issue for those skilled in the art. Utility Model Content

[0005] To address the aforementioned problems, this invention provides an anti-reverse impeller, which effectively overcomes the shortcomings of existing technologies.

[0006] This utility model is achieved through the following technical solution: an anti-reverse impeller, comprising:

[0007] An impeller connection portion having a mounting hole for mounting on any shaft;

[0008] A flow-limiting panel is mounted on the impeller connection portion;

[0009] One or more arc-shaped guide vane panels are arranged perpendicularly to the flow-limiting panel, and one or more arc-shaped guide vane panels are arranged in a circle around the flow-limiting panel.

[0010] The flow-limiting panel has cutouts on both sides of the arc-shaped guide vane panel to increase the elasticity of the flow-limiting panel.

[0011] As a preferred technical solution, the cut includes a first cut and a second cut respectively disposed on one side of the arc-shaped guide vane panel.

[0012] As a preferred technical solution, both the first cut and the second cut are arc-shaped.

[0013] As a preferred technical solution, each of the arc-shaped guide vane panels has an extension section formed on both sides, and the arc-shaped guide vane panel and the flow-limiting panel form a "T" shape.

[0014] As a preferred technical solution, the current-limiting panel is made of a flexible material.

[0015] The beneficial effects of this utility model are as follows: The anti-reverse impeller proposed in this utility model, by setting the cutouts on the flow-limiting panel on both sides of the arc-shaped guide vane panel, rather than setting them on the bottom of the arc-shaped guide vane panel, not only realizes the necessary elastic adjustment function of the flow-limiting panel, but also effectively avoids weakening the structural strength of the root of the arc-shaped guide vane panel. Since the complete "T"-shaped connection structure between the blade and the flow-limiting panel is retained, each arc-shaped guide vane panel has stronger impact resistance and stability during long-term operation, thereby extending the service life of the impeller and reducing the risk of damage.

[0016] Furthermore, the cutouts on the sides of the arc-shaped guide vane panel give the flow-limiting panel a certain degree of elasticity in certain areas, allowing it to better adapt to micro-deformations caused by water flow impact and enhancing the overall reliability of the anti-reverse structure in complex hydraulic environments. Compared with the existing technology where the bottom cutouts lead to blade fatigue and breakage, this invention has a more rational structure, superior mechanical properties, and is more suitable for stable operation under high-frequency start-up or high water pressure conditions, possessing better practical value and market application prospects. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a front structural diagram of the present invention;

[0019] Figure 2 This is a three-dimensional structural diagram of the present invention;

[0020] Explanation of reference numerals in the attached figures:

[0021] 1. Impeller connection; 2. Flow limiting panel; 4. Arc-shaped guide vane panel; 5. First cut; 6. Second cut; 3. Extension section. Detailed Implementation

[0022] All features disclosed in this specification, or all steps in all disclosed methods or processes, may be combined in any way, except for mutually exclusive features and / or steps.

[0023] Any feature disclosed in this specification (including any appended claims, abstract, and drawings) may be replaced by other equivalent or similar features for a similar purpose, unless specifically stated otherwise. That is, unless specifically stated otherwise, each feature is merely one example of a series of equivalent or similar features.

[0024] like Figures 1-2 As shown, this utility model discloses an anti-reverse impeller, comprising an impeller connecting part 1, a flow-limiting panel 2, and one or more arc-shaped guide vane panels 4. The impeller connecting part 1 has a central mounting hole, which can accommodate drive shafts of different diameters, for securely mounting the impeller to the shaft end of rotating equipment, ensuring stable torque transmission during rotation. The impeller connecting part 1 is typically manufactured using integral injection molding or metal processing, resulting in a compact structure, high strength, and effective resistance to water flow impact and motor drive force transmission.

[0025] The flow-limiting panel 2 is fixedly installed on the outer peripheral surface of the impeller connection part 1. It is a ring structure and is arranged horizontally as a whole.

[0026] The flow-limiting panel 2 can be made of flexible materials, such as elastic rubber, engineering plastics, or modified polymers. Its flexibility allows it to deform under water flow impact or localized stress, thereby effectively buffering water pressure impact, improving structural toughness, and enhancing its fatigue resistance. The outer area of ​​the flow-limiting panel 2 serves as the mounting base for multiple arc-shaped guide vane panels 4, providing good formability and mechanical support.

[0027] The arc-shaped guide vane panel 4 consists of multiple independently set hydraulic guiding structures, which are evenly distributed along the outer circumference of the flow-limiting panel 2, and each arc-shaped guide vane panel 4 is set perpendicular to the flow-limiting panel 2 to guide the water flow in a specific direction.

[0028] When the motor rotates in the forward direction, the water flow forms a stable flow field under the guidance, which helps to improve work efficiency. When the motor unexpectedly reverses, the water flow direction changes and is blocked by these arc-shaped guide vane panels 4, thereby effectively generating reverse resistance, reducing or suppressing the reverse speed of the impeller, and realizing the anti-reverse function.

[0029] In order to improve the elastic adjustment performance of the flow limiting panel 2, cuts are provided on both sides of each arc-shaped guide vane panel 4.

[0030] These cuts do not directly weaken the connection between the curved guide vane panel 4 and the flow-limiting panel 2. Instead, they are located on the side areas, specifically on the flow-limiting panels 2 on the left and right sides of the guide vane panel, and are referred to as the first cut 5 and the second cut 6, respectively. This structural arrangement helps to avoid the problem of insufficient strength at the root of the guide vane panel due to cuts at the bottom, thereby improving the overall durability and impact resistance of the structure.

[0031] Both the first cut 5 and the second cut 6 are arc-shaped structures. The arc-shaped cuts not only maintain the local elastic variation range of the flow-limiting panel 2, but also prevent stress concentration from causing crack propagation, further enhancing structural safety and fatigue life. Through the arc-shaped design, the stress transition at both ends of the cut is smooth, and the service life is significantly longer than that of traditional straight-cut structures.

[0032] To enhance the connection strength between the curved guide vane panel 4 and the flow-limiting panel 2, each curved guide vane panel 4 is provided with an extension section 3 at both its left and right ends. The extension section 3 is formed and connected to the flow-limiting panel 2, so that the curved guide vane panel 4 and the flow-limiting panel 2 form a "T"-shaped connection. This "T"-shaped structure can effectively resist the torsional and shear forces under water pressure during rotation, improving the overall stability of the blade.

[0033] Through the above structural arrangement, this utility model optimizes the connection method between the flow-limiting panel 2 and the guide vane panel without increasing the number of parts or manufacturing costs, and improves the cut position and structural form. It not only improves the anti-reverse performance of the whole machine, but also significantly enhances the structural strength and service life, and has good promotion and application value.

[0034] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any changes or substitutions conceived without inventive effort should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the scope defined in the claims.

Claims

1. An anti-reverse impeller, characterized in that, include: Impeller connecting part (1), the impeller connecting part (1) has a mounting hole for mounting on any shaft; A flow-limiting panel (2) is mounted on the impeller connection part (1); One or more arc-shaped guide vane panels (4) are arranged perpendicularly to the flow-limiting panel (2), and one or more arc-shaped guide vane panels (4) are arranged in a circular pattern around the flow-limiting panel (2); The flow-limiting panel (2) has cutouts on both sides of the arc-shaped guide vane panel (4) to increase the elasticity of the flow-limiting panel (2).

2. The anti-reverse impeller according to claim 1, characterized in that: The cut includes a first cut (5) and a second cut (6) respectively disposed on one side of the arc-shaped guide vane panel (4).

3. The anti-reverse impeller according to claim 2, characterized in that: Both the first cut (5) and the second cut (6) are arc-shaped.

4. The anti-reverse impeller according to claim 1, characterized in that: Each of the arc-shaped guide vane panels (4) has an extension section (3) formed on both sides, and the arc-shaped guide vane panels (4) and the flow-limiting panel (2) are in a "T" shape.

5. The anti-reverse impeller according to claim 1, characterized in that: The current limiting panel (2) is made of flexible material.

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