CN216278638U

CN216278638U - Self-positioning impeller

Info

Publication number: CN216278638U
Application number: CN202122200694.1U
Authority: CN
Inventors: 彭定泽
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-09-13
Filing date: 2021-09-13
Publication date: 2022-04-12
Anticipated expiration: 2031-09-13

Abstract

The utility model relates to a self-positioning impeller, which is characterized in that a main body of the impeller is a cake-shaped body, a shaft hole is arranged at the center of the cake-shaped body, a plurality of blades are arranged on the periphery of the cake-shaped body at equal intervals, an overflowing surface is arranged between the blades and the shaft hole, an annular groove is arranged on the inner side of the overflowing surface, a plurality of annularly arranged grooves are arranged on the outer side of the overflowing surface, an inclined hole is arranged in each groove, and the other end of each inclined hole is connected with the bottom corner of the annular groove on the periphery of the shaft hole on the other side. The grooves on two sides of the cake-shaped body are equal in number to the inclined holes and are distributed in a staggered mode in a mirror image mode. The utility model has the advantages that: the self-positioning impeller has the advantages that self-positioning is realized on the premise that the requirement on the coaxiality of accessories is not high, the impeller can be kept upright in the middle under the high-speed rotating state, and the performance of the pump can be well exerted.

Description

Self-positioning impeller

Technical Field

The utility model relates to the technical field of vortex pumps, in particular to a self-positioning impeller of a vortex pump.

Background

The pump product is one of important general mechanical products in various fields of national economy, and the vortex pump occupies a large part of markets of the pump product by virtue of the advantages of high lift and strong self-suction capability. The vortex pump impeller is the power core of the vortex pump, and the impeller rotates at a high speed in a working state, so that the matching relation of the impeller and the pump is critical to the final performance and the service life of the pump. If the cooperation precision is not enough, can lead to the impeller to be in the positive direction operation between two parties of non-, and then lead to performance and life-span all to descend with pump body runner face interference friction, traditional technical scheme is that the axial fit clearance of impeller and the pump body has been increaseed (enough space is reserved for impeller angular deflection), reduce the fit clearance of pivot and impeller and add long shaft hole length simultaneously (utilize the pivot to carry out angle location to the impeller, make it can not radial slope), this can sacrifice the performance of pump to a great extent, and also greatly increased the required precision to accessories such as countershaft, casing simultaneously.

Disclosure of Invention

The utility model aims to provide a novel impeller for a vortex pump, which can perform self-positioning under the high-speed rotation of normal work and can run in the middle positive direction without increasing the axial fit clearance or reducing the fit clearance of a rotating shaft and the impeller.

The purpose of the utility model is realized by the following technical scheme:

a self-positioning impeller is a cake-shaped body, and is provided with a shaft hole, an annular groove, a flow surface and a plurality of blades from the center to the outside in sequence.

The annular overflowing surfaces are distributed on two sides of the impeller in a mirror image mode, a plurality of equidistant grooves which are not punched are arranged on the surfaces of the impeller, punched inclined holes are formed in the grooves, and the grooves on the two sides and the inclined holes are distributed in a mirror image mode and in a staggered mode.

Description of the drawings:

FIG. 1 is a cross-sectional view of an impeller of the present invention;

FIG. 2 is a perspective view of the impeller of the present invention;

in the figure:

1. a shaft hole; 2. an annular groove; 2.1, balance holes; 3. a flow surface; 3.1, grooves; 3.2, inclined holes; 4. a blade.

Detailed Description

The utility model relates to a self-positioning impeller. As shown in fig. 1 and 2, the main body of the impeller is a cake-shaped body, two sides of the end surface are approximately symmetrical, a plurality of blades 4 are arranged on the outermost side, a shaft hole 1 is arranged at the center, an overflowing surface 3 is arranged between the shaft hole 1 and the blades 4, an annular groove 2 is arranged on the inner side of the overflowing surface 3, and two symmetrical and perforated balance holes 2.1 are arranged on the annular groove 2 and used for balancing the pressure on two sides of the impeller; a plurality of grooves 3.1 which are arranged at equal intervals are arranged on the outer side of the flow surface 3, inclined holes 3.2 are arranged at the bottoms of the grooves 3.1, and the other ends of the inclined holes 3.2 are connected with the bottom corners of the annular grooves 2; the grooves 3.1 and the inclined holes 3.2 on the two sides are in mirror image and are distributed in a staggered mode.

The working principle of the utility model is briefly described as follows:

the vortex pump impeller is provided with a tiny axial moving space inside a flow channel, when the impeller works and rotates at a high speed, fluid is driven to rotate, the impeller is in an extremely unstable motion environment and often inclines to one side or even deviates, and interference friction with other parts of a pump body is caused. Set up recess 3.1 and inclined hole 3.2 back in this patent, the fluid will link to each other through inclined hole 3.2, and there is some fluid to store in recess 3.1, after the impeller high-speed rotation, the fluid that stores in recess 3.1 produces outside power, form one "barrier" between impeller and pump body flow path face, because the combined action of a plurality of recesses 3.1 in both sides, make the impeller atress upright in living in, realize "self-align", be in best operating condition at any time, this process need not rely on the axiality cooperation of accessory too much, when reducing the required precision of other accessories, still effectively guaranteed the performance of pump.

Claims

1. The utility model provides a self-align impeller, its main part is a cake body which characterized in that: the cake-shaped body is characterized in that a shaft hole (1) is formed in the center of the cake-shaped body, blades (4) are arranged on the outer side of the cake-shaped body, an overflowing surface (3) is arranged between the blades (4) and the shaft hole (1), an annular groove (2) is formed in the inner side of the overflowing surface (3), two symmetrical and perforated balance holes (2.1) are formed in the annular groove (2), a plurality of grooves (3.1) which are arranged at equal intervals are formed in the outer side of the overflowing surface (3), and inclined holes (3.2) are formed in the bottoms of the grooves (3.1).

2. The self-positioning impeller of claim 1, wherein: the grooves (3.1) and the inclined holes (3.2) are in mirror image and are distributed in a staggered manner.

3. The self-positioning impeller of claim 1, wherein: the other end of the inclined hole (3.2) is connected with the bottom corner of the annular groove (2).