CN214304511U

CN214304511U - High temperature pump impeller connection structure

Info

Publication number: CN214304511U
Application number: CN202023230306.6U
Authority: CN
Inventors: 张明; 陈建章
Original assignee: Jiangsu Jiangda Pump Industry Manufacture Co ltd
Current assignee: Jiangsu Jiangda Pump Industry Manufacture Co ltd
Priority date: 2020-12-29
Filing date: 2020-12-29
Publication date: 2021-09-28
Anticipated expiration: 2030-12-29

Abstract

The utility model relates to a pump field provides a high temperature pump impeller connection structure. Aiming at the use occasion of the high-temperature pump, the aluminum gaskets with proper thickness are selected on the two end surfaces of the impeller, so that the high-temperature pump can well adapt to the high-temperature working condition, the manufacturing process of the aluminum gaskets is simple, the reliability is high, and the production cost is reduced; the impeller is matched with the shaft sleeve through the concave-convex mechanism, the shaft sleeve is simultaneously limited to the axis and the radial direction of the impeller, and the radial runout of the impeller is effectively prevented.

Description

High temperature pump impeller connection structure

Technical Field

The utility model relates to a pump field, concretely relates to high temperature pump impeller connection structure.

Background

The pump generally comprises components such as a pump shell, a pump shaft and an impeller, wherein the impeller is arranged on the pump shaft, and the pump shaft drives the impeller to rotate under the driving of a motor so as to realize the conveying of materials. A gasket is generally used between the impeller and the locking nut to increase friction force, so that vibration caused by the existence of a gap is avoided, and meanwhile, the nut is prevented from loosening. For a high-temperature pump for conveying a high-temperature medium, a common gasket is easy to corrode after being used for a period of time. Wear, leading to failure. Meanwhile, due to the clearance between the impeller and the shaft and the different expansion coefficients of the pump shaft and the impeller at high temperature, the impeller generates radial runout in the working process, so that vibration and abrasion are generated.

Disclosure of Invention

In order to overcome the defect that the gasket of the high-temperature pump impeller existing in the conveying of high-temperature media is easy to damage and has radial runout in the prior art, the utility model aims to provide a high-temperature pump impeller connecting structure.

In order to achieve the above purpose, the utility model adopts the technical proposal that:

a high-temperature pump impeller connecting structure comprises a pump shaft and an impeller, wherein a shaft sleeve is sleeved on the pump shaft and fixedly installed on the pump shaft through a screw, the impeller is installed on the pump shaft through a key, an impeller nut is installed at the shaft end of the pump shaft through an external thread, and two end faces of the impeller are axially limited by the impeller nut and the shaft sleeve respectively; an aluminum gasket is arranged between the end faces of the impeller nut and the impeller; an aluminum gasket is arranged between the end faces of the impeller and the shaft sleeve.

Furthermore, the inner wall of one end of the shaft sleeve is provided with a limit boss which is limited by a shaft shoulder of the pump shaft.

Further, the aluminum gasket is sleeved on the pump shaft.

And furthermore, the matching end faces of the impeller and the shaft sleeve are matched in a concave-convex structure, the end face of the impeller is provided with a boss, the end face of the shaft sleeve is provided with a groove, the boss is connected and matched with the groove, and the gasket is arranged at the bottom of the groove.

After taking above technical scheme, the beneficial effects of the utility model are that: aiming at the use occasion of the high-temperature pump, the aluminum gaskets with proper thickness are selected on the two end surfaces of the impeller, so that the high-temperature pump can well adapt to the high-temperature working condition, the manufacturing process of the aluminum gaskets is simple, the reliability is high, and the production cost is reduced; the impeller is matched with the shaft sleeve through the concave-convex mechanism, the shaft sleeve is simultaneously limited to the axis and the radial direction of the impeller, and the radial runout of the impeller is effectively prevented.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

Detailed Description

The following detailed description of the embodiments of the present invention is made with reference to the accompanying drawings:

as shown in the figure, the high-temperature pump impeller connecting structure comprises a pump shaft 1 and an impeller 2, wherein the pump shaft 1 is supported on a pump body 3 through a bearing and rotation, a shaft sleeve 4 is sleeved on the pump shaft 1, the shaft sleeve 4 is fixedly installed on the pump shaft 1 through a screw, a limiting boss 5 which is limited by a shaft shoulder of the pump shaft is arranged on the inner wall of one end of the shaft sleeve 4, and the shaft sleeve 4 is further limited. The impeller 2 is arranged on the pump shaft 1 through a key, and the end face of the inner side of the impeller 2 is in contact with and limited by the end face of the shaft sleeve 4. The end faces of the impeller 2 and the shaft sleeve 4 are matched in a concave-convex structure, the end face of the impeller 2 is provided with a boss 5, the end face of the shaft sleeve 4 is provided with a groove 6, the boss 5 is connected and matched with the groove 6, and the bottom of the groove 6 is provided with an aluminum gasket 7 with a certain thickness. An impeller nut 8 is arranged at the shaft end of the pump shaft 1 through external threads, and the end face of the impeller nut 8 axially limits the outer end face of the impeller 2; an aluminum gasket 9 with a certain thickness is also arranged between the end surfaces of the impeller nut 8 and the impeller 2.

Claims

1. A high-temperature pump impeller connecting structure comprises a pump shaft and an impeller, wherein a shaft sleeve is sleeved on the pump shaft and fixedly installed on the pump shaft through a screw, and the high-temperature pump impeller connecting structure is characterized in that the impeller is installed on the pump shaft through a key, an impeller nut is installed at the shaft end of the pump shaft through external threads, and two end faces of the impeller are axially limited by the impeller nut and the shaft sleeve respectively; an aluminum gasket is arranged between the end faces of the impeller nut and the impeller; an aluminum gasket is arranged between the end faces of the impeller and the shaft sleeve.

2. The impeller connecting structure of the high-temperature pump as claimed in claim 1, wherein a limit boss for limiting with a shoulder of the pump shaft is provided on an inner wall of one end of the shaft sleeve.

3. The impeller connecting structure of a high-temperature pump according to claim 1, wherein the aluminum gasket is sleeved on the pump shaft.

4. The connection structure of the impeller of the high-temperature pump as claimed in claim 1, wherein the matching end faces of the impeller and the shaft sleeve are matched in a concave-convex structure, the end face of the impeller is provided with a boss, the end face of the shaft sleeve is provided with a groove, the boss is connected and matched with the groove, and the gasket is mounted at the bottom of the groove.