阅读说明：本技术 一种冲压件离心叶轮 (Stamping part centrifugal impeller ) 是由 杨晓东 王兴 李家兴 胡海 王常乐 王全聪 于 2019-10-14 设计创作，主要内容包括：本发明涉及一种冲压件离心叶轮,包括轮毂、冲压而成的前盖和后盖,前盖中心位置设置有翻边的进水孔,后盖中心位置开设有用于连接轮毂的中心孔,还包括若干叶片；叶片包括长叶片和短叶片,长叶片和短叶片呈弧形条状,且短叶片是为长叶片长度的2/3,长叶片和短叶片长短相间、均匀的设置在前盖和后盖之间,长叶片一端与前盖和后盖的圆周齐平,另一端与中心孔圆周齐平,短叶片一端与前盖和后盖的圆周齐平。本发明采用冲压工件制作,密度更小,强度更高,更耐腐蚀性,工件表面更加平滑,每相邻两个原叶片之间增加一个短叶片,该结构更加提高了工作效率,水泵供液能力大大增加,同样,增加了叶轮的使用寿命,降低了使用成本。(The invention relates to a stamping part centrifugal impeller, which comprises a hub, a front cover and a rear cover which are formed by stamping, wherein a flanged water inlet hole is formed in the central position of the front cover, a central hole for connecting the hub is formed in the central position of the rear cover, and the stamping part centrifugal impeller also comprises a plurality of blades; the blade includes long blade and short blade, and long blade and short blade are arc strip, and short blade is 2/3 for long blade length, and long blade and short blade alternate, even setting are between protecgulum and hou gai, and long blade one end flushes with the circumference of protecgulum and hou gai, and the other end flushes with the centre bore circumference, and short blade one end flushes with the circumference of protecgulum and hou gai. The invention is made of a stamping workpiece, has smaller density, higher strength and corrosion resistance, has smoother workpiece surface, and adds a short blade between every two adjacent original blades, thereby improving the working efficiency, greatly increasing the liquid supply capacity of the water pump, prolonging the service life of the impeller and reducing the use cost.)

1. A stamping part centrifugal impeller comprises a hub, a front cover and a rear cover which are formed by stamping, wherein a flanged water inlet hole is formed in the center of the front cover, a center hole used for connecting the hub is formed in the center of the rear cover, and the stamping part centrifugal impeller is characterized by further comprising a plurality of blades;

the blades comprise long blades and short blades, the long blades and the short blades are arc-shaped strips, the long blades and the short blades are arranged between the front cover and the rear cover at intervals and uniformly, one ends of the long blades are flush with the circumferences of the front cover and the rear cover, the other ends of the long blades are flush with the circumference of the central hole, and one ends of the short blades are flush with the circumferences of the front cover and the rear cover;

the rear cover center hole penetrates through the hub and is fixed on the hub, meanwhile, the water inlet hole of the front cover penetrates through the hub, a gap for water inlet exists between the water inlet hole and the outer circumference of the hub, and the front cover is connected with the rear cover through the blades.

2. A stamped centrifugal impeller in accordance with claim 1 wherein the short blades are 2/3 the length of the long blades, in which condition the centrifugal effect is optimal.

3. A stamped centrifugal impeller in accordance with claim 1 wherein the back cover is welded to the hub by energy storage welding.

4. A stamped centrifugal impeller according to claim 1 wherein the front and rear covers are 286mm in diameter, the water inlet radius is greater than the central bore radius, the water inlet radius is 110.4mm and the central bore is 66.7 mm.

5. The centrifugal impeller with stamping parts as claimed in claim 1, wherein the hub is centrally provided with a shaft hole for connecting a driving shaft, and the inner surface of the shaft hole is provided with a key groove.

Technical Field

The invention belongs to the technical field of water pumps, and particularly relates to a stamping part centrifugal impeller.

Background

The impeller is a key part of the water pump, and the optimization design is mainly the impeller in the aspect of improving the efficiency of the water pump, wherein the blades are particularly key, and in all aspects of the blade shapes, a plurality of ancestors perform long-term exploration and obtain a plurality of excellent and effective effects. The water pump impeller in the prior art generally comprises a front cover, a rear cover and a plurality of blades which are arranged between the front cover and the rear cover and distributed along the circumferential direction, wherein the front cover, the blades and the rear cover are integrally formed through a casting process, so that a water flow channel is formed between any two adjacent impellers. Although the conventional water pump impeller can meet the requirement of actual production, the integral casting process is adopted, so that the product is inevitably provided with more or less sand holes, the strength of the blade is poor, and the blade is damaged after long-term use, which is one of the reasons for limiting the service life of the water pump impeller. In addition, because the surface accuracy of the blade surface and the inner surfaces of the front and rear covers is poor due to the integral casting, the resistance to the flow of water in the water flow channel is large, which not only reduces the efficiency of water flow pumping but also increases the load force of the water pump, thereby causing the actual water supply amount of the water pump with the same power to be obviously less than the theoretical value.

Disclosure of Invention

In view of this, the present invention provides a stamping centrifugal impeller, which aims to overcome the defects of uneven impeller surface, low strength, heavy weight, poor corrosion resistance and low working efficiency.

In order to achieve the purpose, the technical scheme is as follows:

a stamping part centrifugal impeller comprises a hub, a front cover and a rear cover which are formed by stamping, wherein a flanged water inlet hole is formed in the center of the front cover, a center hole used for connecting the hub is formed in the center of the rear cover, and the stamping part centrifugal impeller also comprises a plurality of blades;

the blades comprise long blades and short blades, the long blades and the short blades are arc-shaped strips, the long blades and the short blades are arranged between the front cover and the rear cover at intervals and uniformly, one ends of the long blades are flush with the circumferences of the front cover and the rear cover, the other ends of the long blades are flush with the circumference of the central hole, and one ends of the short blades are flush with the circumferences of the front cover and the rear cover;

the rear cover center hole penetrates through the hub and is fixed on the hub, meanwhile, the front cover water inlet hole penetrates through the hub, a gap for water inlet exists between the water inlet hole and the outer circumference of the hub, and the front cover is connected with the rear cover through the blades.

As a further improvement of the invention, the short blade is 2/3 which is the length of the long blade, and the centrifugal effect is the best in the state.

As a further improvement of the invention, the rear cover is welded to the hub by energy storage welding.

As a further improvement of the invention, the diameters of the front cover and the rear cover are 286mm respectively, the radius of the water inlet hole is larger than that of the central hole, the radius of the water inlet hole is 110.4mm, and the central hole is 66.7 mm.

As a further improvement of the invention, the center of the hub is provided with a shaft hole for connecting the driving shaft, and the inner surface of the shaft hole is provided with a key groove.

The invention has the beneficial effects that: the impeller is manufactured by stamping a workpiece, so that the strength is higher, the impeller cannot be easily deformed, the impeller is more corrosion-resistant, the corrosion of impurities in liquid is effectively prevented, the surface of the workpiece is smoother, a short blade (the length of which is two thirds of that of the original blade) is added between every two adjacent original blades, the short blade performs secondary centrifugation on the liquid, the lift can be improved by 20 percent, the structure improves the working efficiency, the liquid supply capacity of a water pump is greatly improved, and the service life of the impeller is prolonged.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the invention and, together with the description, serve to explain the invention and not to limit the invention. In the drawings:

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a top view of the present invention.

Detailed Description

It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.

In order to make the technical solutions better understood by those skilled in the art, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only partial embodiments of the present application, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

A stamping centrifugal impeller comprises a hub 1, a front cover 2 and a rear cover 3 which are formed by stamping, wherein the center of the hub 1 is provided with a shaft hole 11 for connecting a driving shaft, the inner surface of the shaft hole is provided with a key groove 12, the center of the front cover 2 is provided with a water inlet hole 21, the center of the rear cover 3 is provided with a center hole 31 for connecting the hub 1, and the stamping centrifugal impeller also comprises a plurality of blades 4;

the blades 4 comprise long blades 41 and short blades 42, the long blades 41 and the short blades 42 are arc-shaped strips, the short blades 42 are 2/3 the length of the long blades 41, the long blades 41 and the short blades 42 are arranged between the front cover 2 and the rear cover 3 at intervals and uniformly, one end of each long blade 41 is flush with the circumferences of the front cover 2 and the rear cover 3, the other end of each long blade 41 is flush with the circumference of the central hole 31, and one end of each short blade 42 is flush with the circumferences of the front cover 2 and the rear cover 3;

rear cover 3 centre bore 31 wears on wheel hub 1 and welds on wheel hub 1 through the energy storage welding, and simultaneously, the inlet opening 21 of protecgulum 2 wears on wheel hub 1, and has the clearance that is used for into water between inlet opening 21 and the outer circumference of wheel hub 1, and protecgulum 2 is connected with rear cover 3 through blade 4, the diameter of protecgulum 2 and rear cover 3 is 286mm respectively, the inlet opening 21 radius is greater than centre bore 31 radius, and the radius of inlet opening 21 is 110.4mm, and centre bore 31 is 66.7 mm.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.