High-strength mixed-flow pump impeller

Abstract

The utility model discloses a high-strength mixed-flow pump impeller, and relates to the technical field of high-strength mixed-flow pump impellers, the high-strength mixed-flow pump impeller comprises an impeller body and an impeller cover, the impeller cover is arranged on the outer surface of the impeller body and is spaced from the impeller body, a flow channel is formed between the impeller cover and the impeller body, and a plurality of arc-shaped grooves are formed in the outer side face of the lower end of the impeller cover; a rubber pad is bonded to the inner side wall of the upper end of the impeller cover, a plurality of deformation holes are formed in the rubber pad, a flow channel inlet is formed in the inner side wall of the impeller body, and a plurality of blades are arranged on the edge of the upper surface of the impeller body at intervals in the circumferential direction. Through the cooperation of the structure, the loss of the impeller body in the using process can be reduced, and then the using strength is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of high-strength mixed-flow pump impellers, in particular to a high-strength mixed-flow pump impeller. Background Art

[0002] Mixed flow pump is a type of pump, its performance and structure are between centrifugal pump and axial flow pump, it has the advantages of both centrifugal pump and axial flow pump, and compensates for the disadvantages of both; mixed flow pump has the characteristics of large range of flow rate and head variation, wide high-efficiency zone, etc., so it is widely used in various fields such as farmland irrigation and drainage, power station cooling system, aerospace, etc.; impeller refers to the wheel disc with moving blades, which is a component of impulse steam turbine rotor, and can also refer to the general term for the wheel disc and the rotating blades installed on it. Impellers can be classified according to shape and opening and closing conditions.

[0003] In traditional designs, the strength and stability of the impeller cover are usually achieved by adding materials, which leads to an increase in weight. In addition, the heat dissipation design of the impeller cover may not be optimized, and more metal materials are needed to enhance the heat dissipation effect, which leads to an increase in weight. This increases the resistance and power consumption of the impeller cover when it rotates, which causes losses to the impeller. The greater weight will also increase the friction and stress on the impeller cover when it rotates, increasing the risk of wear and breakage of mechanical parts. On the other hand, the existing mixed flow pump lacks a corresponding protective structure between the impeller blades and the inner wall of the impeller cover. During the operation of the mixed flow pump impeller, once the load is unevenly distributed, one of the impellers bears too much load, which can easily cause the blades to scratch and collide with the impeller cover, resulting in wear, thereby reducing the use intensity of the entire mixed flow pump.

[0004] For this purpose, a high-strength mixed-flow pump impeller is proposed. Utility Model Content

[0005] The purpose of the utility model is to provide a high-strength mixed flow pump impeller in order to reduce the loss of the impeller body during use and thereby improve the strength of use.

[0006] The technical solution adopted by the utility model is as follows:

[0007] A high-strength mixed-flow pump impeller comprises an impeller body and an impeller cover, wherein the impeller cover is arranged on the outer surface of the impeller body and is spaced therefrom, and a flow channel is formed between the impeller cover and the impeller body, a plurality of arc grooves are provided on the outer side surface of the lower end of the impeller cover, a rubber pad is bonded to the inner side wall of the upper end of the impeller cover, a plurality of deformation holes are provided inside the rubber pad, a flow channel inlet is installed on the inner side wall of the impeller body, and a plurality of blades are circumferentially spaced on the edge of the upper surface of the impeller body.

[0008] Furthermore, a mounting hole for mounting a rotating shaft is provided in the middle of the upper surface of the impeller body.

[0009] Furthermore, a flow channel inlet is formed between the impeller body and the top of the impeller cover.

[0010] Furthermore, a flow channel outlet is formed between the impeller body and the bottom of the impeller cover.

[0011] Furthermore, a plurality of the arc-shaped grooves are equidistantly arranged on the outer surface of the lower end of the impeller cover.

[0012] Furthermore, a plurality of the deformation holes are evenly arranged inside the rubber pad.

[0013] In summary, due to the adoption of the above technical solution, the beneficial effects of the utility model are:

[0014] In the utility model, by opening a plurality of arc grooves on the outer side wall of the lower end of the impeller cover, the weight of the impeller cover can be reduced, the load and power consumption of the machine can be reduced, and the working efficiency and service life of the machine can be improved; at the same time, the plurality of arc grooves can also increase the heat dissipation area of ​​the impeller cover, which is beneficial to reduce the heat transferred from the impeller body to the impeller cover; at the same time, the rubber pad has a certain flexibility to prevent the blades from directly rubbing against the inner wall of the impeller cover during rotation and causing wear; through the cooperation of the above structures, the loss of the impeller body during use can be reduced, thereby improving the intensity of use. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0016] Figure 2 This is a schematic diagram of the structure of the impeller cover in the utility model;

[0017] Figure 3 It is a cross-sectional view of the rubber pad in the utility model;

[0018] Figure 4 It is a cross-sectional view of the utility model.

[0019] Markings in the figure: 1-impeller body, 2-impeller cover, 3-rubber pad, 4-flow channel inlet, 5-flow channel outlet, 11-mounting hole, 12-blade, 21-arc groove, 31-deformation hole. DETAILED DESCRIPTION

[0020] In order to make the purpose, technical solution and advantages of the embodiments of the utility model clearer, the technical solution in the embodiments of the utility model will be clearly and completely described below in combination with the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model. Example

[0021] Reference Figure 1-Figure 4 The high-intensity mixed flow pump impeller comprises an impeller body 1 and an impeller cover 2. The impeller cover 2 is arranged on the outer surface of the impeller body 1 and is spaced therefrom. A flow channel is formed between the impeller cover 2 and the impeller body 1. A flow channel inlet 4 is formed between the impeller body 1 and the top of the impeller cover 2. A flow channel outlet 5 is formed between the impeller body 1 and the bottom of the impeller cover 2. A mounting hole 11 for mounting a rotating shaft is opened in the middle of the upper surface of the impeller body 1. Specifically, the impeller body 1 can be mounted on the mixed flow pump through the mounting hole 11. On the rotating shaft of the flow pump; a plurality of arc grooves 21 are provided on the outer side surface of the lower end of the impeller cover 2, and the plurality of arc grooves 21 are equidistantly arranged on the outer surface of the lower end of the impeller cover 2; specifically, the plurality of arc grooves 21 are provided on the outer side wall of the lower end of the impeller cover 2, which can reduce the weight of the impeller cover, reduce the load and power consumption of the machine, and help to improve the working efficiency and service life of the machine; at the same time, the plurality of arc grooves 21 can also increase the heat dissipation area of ​​the impeller cover, which is beneficial to reduce the heat transferred from the impeller body 1 to the impeller cover 2.

[0022] Reference Figure 1-Figure 4 A rubber pad 3 is bonded to the inner wall of the upper end of the impeller cover 2, and a plurality of deformation holes 31 are opened inside the rubber pad 3. A flow channel inlet 4 is installed on the inner wall of the impeller body 1, and a plurality of blades 12 are arranged at circumferential intervals on the edge of the upper surface of the impeller body 1; specifically, the rubber pad 3 has a certain flexibility, which can prevent the blades 12 from directly rubbing against the inner wall of the impeller cover 2 during rotation and causing wear; through the cooperation of the above structure, the loss of the impeller body 1 during use can be reduced, thereby improving the use strength.

[0023] Reference Figure 1-Figure 4 , a plurality of deformation holes 31 are evenly arranged inside the rubber pad 3; specifically, when the blade 12 contacts and squeezes the rubber pad 3, the rubber pad 3 can be deformed through the deformation holes 31 to avoid direct contact between the blade 12 and the inner wall of the impeller cover 2 to cause wear.

[0024] The implementation principle of the high-intensity mixed flow pump impeller embodiment of the present application is:

[0025] When using the mixed flow pump impeller, by opening a plurality of arc grooves 21 on the outer side wall of the lower end of the impeller cover 2, the weight of the impeller cover can be reduced, the load and power consumption of the machine can be reduced, and the working efficiency and service life of the machine can be improved; at the same time, the plurality of arc grooves 21 can also increase the heat dissipation area of ​​the impeller cover, which is beneficial to reduce the heat transferred from the impeller body 1 to the impeller cover 2; at the same time, the rubber pad 3 has a certain flexibility to prevent the blades 12 from directly rubbing against the inner wall of the impeller cover 2 during rotation and causing wear; through the cooperation of the above structures, the loss of the impeller body 1 during use can be reduced, thereby improving the intensity of use.

[0026] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A high-intensity mixed-flow pump impeller, comprising an impeller body (1) and an impeller cover (2), characterized in that: The impeller cover (2) is arranged on the outer surface of the impeller body (1) and is spaced therefrom, and a flow channel is formed between the impeller cover (2) and the impeller body (1); a plurality of arc-shaped grooves (21) are provided on the outer side surface of the lower end of the impeller cover (2); a rubber pad (3) is bonded to the inner side wall of the upper end of the impeller cover (2); a plurality of deformation holes (31) are provided inside the rubber pad (3); a flow channel inlet (4) is installed on the inner side wall of the impeller body (1); and a plurality of blades (12) are provided at circumferential intervals on the edge of the upper surface of the impeller body (1).

2. The high-intensity mixed flow pump impeller according to claim 1, characterized in that: A mounting hole (11) for mounting a rotating shaft is provided in the middle of the upper surface of the impeller body (1).

3. The high-intensity mixed flow pump impeller according to claim 1, characterized in that: A flow channel inlet (4) is formed between the impeller body (1) and the top of the impeller cover (2).

4. The high-intensity mixed flow pump impeller according to claim 1, characterized in that: A flow channel outlet (5) is formed between the impeller body (1) and the bottom of the impeller cover (2).

5. The high-intensity mixed flow pump impeller according to claim 1, characterized in that: A plurality of arc-shaped grooves (21) are arranged at equal intervals on the outer surface of the lower end of the impeller cover (2).

6. The high-intensity mixed flow pump impeller according to claim 1, characterized in that: A plurality of the deformation holes (31) are evenly arranged inside the rubber pad (3).

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