CN211009256U

CN211009256U - Mounting structure of centrifugal pump impeller and shaft

Info

Publication number: CN211009256U
Application number: CN201922008253.4U
Authority: CN
Inventors: 田佳圣; 曹春晓; 许伟峰
Original assignee: Hangzhou Chaolong Pump Co ltd
Current assignee: Hangzhou Chaolong Pump Co ltd
Priority date: 2019-11-20
Filing date: 2019-11-20
Publication date: 2020-07-14
Anticipated expiration: 2029-11-20

Abstract

The utility model discloses a mounting structure of centrifugal pump impeller and axle, include pump chamber, pivot, install the epaxial axle sleeve of rotating, be located pivot tip installation impeller in the pump chamber, set up adjusting shim and sealing washer between impeller and the axle sleeve. The utility model discloses installed the sealing washer additional between axle sleeve and impeller, effectively avoided the adjusting shim to use the back for a long time and then arouse the problem of medium leakage because of sealed effect variation.

Description

Mounting structure of centrifugal pump impeller and shaft

Technical Field

The utility model relates to a centrifugal pump especially relates to the mounting structure of centrifugal pump impeller and axle.

Background

Referring to fig. 1 and 2, the centrifugal pump has a pump chamber, a shaft sleeve 4 is installed at the pump chamber, a rotating shaft is installed on the shaft sleeve 4, an impeller 1 is installed in the pump chamber and positioned at the end of the rotating shaft, and in order to ensure a working gap between the impeller and a lining plate, an adjusting gasket 2 with different thicknesses is placed between the impeller 1 and the shaft sleeve 4 for sealing and adjusting the gap. Since the adjustment gasket 2 is not designed for sealing, the sealing effect may be deteriorated and even the medium may leak after a long period of use.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the above problem, providing a mounting structure of centrifugal pump impeller and axle, prevent that adjusting shim from using the back for a long time and then arousing the medium leakage because of sealed effect variation.

In order to achieve the above purpose, the utility model adopts the following technical scheme: the utility model provides a mounting structure of centrifugal pump impeller and axle, includes pump chamber, pivot, installs the epaxial axle sleeve of pivot, the pump chamber is located pivot tip installation impeller, its characterized in that, set up adjusting shim and sealing washer between impeller and the axle sleeve.

Further: the sealing ring is an O-shaped sealing ring.

Further: the pivot connecting portion of impeller has the shaft hole, and shaft hole entrance sets up the counter bore, and the axle sleeve sets up the bulge loop near the impeller end, and counter bore and bulge loop cooperation install adjusting shim between axle sleeve and the pivot connecting portion, and bulge loop and counter bore junction set up the sealing washer.

Further: a gap is arranged between the bottom of the counter bore and the top of the convex ring.

Compared with the prior art, the utility model discloses following beneficial effect has: the utility model discloses installed the sealing washer additional between axle sleeve and impeller, effectively avoided the adjusting shim to use the back for a long time and then arouse the problem of medium leakage because of sealed effect variation.

Drawings

Fig. 1 is a sectional view of a mounting structure of a centrifugal pump impeller and a shaft in the related art.

Fig. 2 is an enlarged view of S2 in fig. 1.

Fig. 3 is a sectional view showing an installation structure of an impeller and a shaft of a centrifugal pump.

Fig. 4 is an enlarged view of S1 in fig. 3.

Detailed Description

Referring to fig. 3 and 4, the centrifugal pump impeller and shaft mounting structure comprises a pump cavity, a rotating shaft 5 and a shaft sleeve 4 mounted on the rotating shaft 5, wherein an impeller 1 is mounted in the pump cavity and positioned at the end part of the rotating shaft 5, and an adjusting gasket 2 and a sealing ring 3 are arranged between the impeller 1 and the shaft sleeve 4.

In the embodiment, the sealing ring 3 is an O-ring.

In the embodiment, the rotating shaft connecting part of the impeller is provided with a shaft hole, a counter bore is arranged at the inlet of the shaft hole, a convex ring 41 is arranged at the end, close to the impeller, of the shaft sleeve 4, the counter bore is matched with the convex ring, an adjusting gasket 2 is arranged between the shaft sleeve 4 and the rotating shaft connecting part, and a sealing ring 3 is arranged at the joint of the convex ring 41 and the counter bore.

In the embodiment, a gap 6 is arranged between the bottom of the counter bore and the top of the convex ring. The assembly of the impeller and the shaft sleeve is facilitated.

The improved mounting structure adds an O-shaped sealing ring between the shaft sleeve and the impeller as sealing, so that the sealing effect can be still achieved even if the sealing of the adjusting gasket is failed, and the safety performance of the product is improved.

Above only do the preferred embodiment of the present invention, the protection scope of the present invention is not limited to the above embodiment, all belong to the technical scheme of the present invention all belong to the protection scope of the present invention. For those skilled in the art, several modifications can be made without departing from the principle of the present invention, and such modifications should also be considered as the protection scope of the present invention.

Claims

1. The utility model provides a mounting structure of centrifugal pump impeller and axle, includes pump chamber, pivot (5), installs axle sleeve (4) on pivot (5), be located pivot (5) tip installation impeller (1) in the pump chamber, its characterized in that, set up adjusting shim (2) and sealing washer (3) between impeller (1) and axle sleeve (4).

2. A centrifugal pump impeller and shaft mounting structure according to claim 1, wherein: the sealing ring (3) is an O-shaped sealing ring.

3. A centrifugal pump impeller and shaft mounting structure according to claim 1, wherein: the pivot connecting portion of impeller have the shaft hole, and shaft hole entrance sets up the counter bore, and axle sleeve (4) are close to the impeller end and set up bulge loop (41), and counter bore and bulge loop cooperation install adjusting shim (2) between axle sleeve (4) and the pivot connecting portion, and bulge loop (41) and counter bore junction set up sealing washer (3).

4. A centrifugal pump impeller and shaft mounting structure according to claim 1, wherein: a gap (6) is arranged between the bottom of the counter bore and the top of the convex ring.