CN212471315U

CN212471315U - Multistage centrifugal pump impeller disassembling tool

Info

Publication number: CN212471315U
Application number: CN202020777742.6U
Authority: CN
Inventors: 覃向东; 罗威; 雷建平; 郑辉
Original assignee: Yichang City Xixia Pump Co ltd
Current assignee: Yichang City Xixia Pump Co ltd
Priority date: 2020-05-12
Filing date: 2020-05-12
Publication date: 2021-02-05
Anticipated expiration: 2030-05-12

Abstract

The utility model discloses a frock is disassembled to multistage centrifugal pump impeller, it includes the mount, the middle part of mount has the pneumatic cylinder through locking bolt fixed mounting, the pull rod is installed to the bilateral symmetry that lies in the pneumatic cylinder on the mount, pull rod one end links to each other with the mount cooperation through flexible adjustment mechanism, the drag hook is installed through screw-thread fit to the other end of pull rod, the drag hook links with the cooperation of locating piece looks hook, the locating piece is fixed on the lateral wall of the middle section casing of the centrifugal pump of waiting to dismantle. This disassemble frock can be used for the dismantlement of multistage centrifugal pump impeller, and then great improvement disassemble efficiency, reduce unnecessary part and damage.

Description

Multistage centrifugal pump impeller disassembling tool

Technical Field

The utility model relates to a pump body examines and repair the instrument field, in particular to multistage centrifugal pump impeller disassembles frock.

Background

The multistage centrifugal pump is widely applied to pump industries such as excavation, mines, chemical engineering, municipal water supply and the like, and in order to ensure the use efficiency of the multistage centrifugal pump, wearing parts of the multistage centrifugal pump need to be maintained or replaced regularly, and the multistage centrifugal pump mainly comprises a balance disc, a balance ring, an impeller, a sealing ring, a guide vane sleeve and the like. When the impeller is disassembled, due to the lack of special tools, methods such as hammering, chiseling, gas cutting, welding and cutting are often adopted, which not only wastes labor and time, but also easily damages the main shaft and other parts which may be intact, and causes unnecessary waste. Therefore, a tool is needed to be designed to improve the efficiency of disassembling the multistage centrifugal pump impeller and reduce unnecessary part damage.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a multistage centrifugal pump impeller disassembles frock, this disassembles the dismantlement that the frock can be used for multistage centrifugal pump impeller, and then great improvement disassemble efficiency, reduce the unnecessary part and damage.

In order to realize the technical characteristics, the purpose of the utility model is realized as follows: the utility model provides a frock is disassembled to multistage centrifugal pump impeller, it includes the mount, the middle part of mount has the pneumatic cylinder through locking bolt fixed mounting, the pull rod is installed to the bilateral symmetry that lies in the pneumatic cylinder on the mount, pull rod one end is passed through flexible adjustment mechanism and is linked to each other with the mount cooperation, the drag hook is installed through screw-thread fit to the other end of pull rod, the drag hook links with the cooperation of locating piece looks hook, the locating piece is fixed on the lateral wall of the middle section casing of the centrifugal pump of waiting to dismantle.

The telescopic adjusting mechanism comprises an adjusting sleeve sleeved on the pull rod, and the adjusting sleeve is fixedly installed at the end position of the pull rod through a plurality of locking nuts.

The adjusting sleeve is provided with a plurality of different length specifications.

When the hydraulic cylinder is used, the end of the piston rod of the hydraulic cylinder is in contact fit with the end of the pump shaft.

The utility model discloses there is following beneficial effect:

1. the inserting tool utilizes hydraulic pressure to detach the impeller from the shaft, avoids using destructive methods such as hammering, chiseling, gas cutting, welding and cutting for detaching, can not only ensure that parts are not damaged, but also improve detaching efficiency by heating the impeller, reduce maintenance cost and improve economic benefit.

2. Through setting up flexible adjustment mechanism and can guarantee to disassemble after the middle section and the impeller of front end, can change the end drag hook extension length of pull rod, and then make it cooperate with next section middle section, finally realize disassembling of all impellers.

Drawings

The present invention will be further explained with reference to the drawings and examples.

Fig. 1 is a schematic view of the overall structure of the present invention.

In the figure: the pump shaft 1, the impeller 2, the middle section 3, the locating block 4, the drag hook 5, the pull rod 6, the fixed frame 7, the adjusting sleeve 8, the locking nut 9, the locking bolt 10, the hydraulic cylinder 11 and the piston rod 12.

Detailed Description

The following describes embodiments of the present invention with reference to the accompanying drawings.

Example 1:

as shown in fig. 1, a frock is disassembled to multistage centrifugal pump impeller, it includes mount 7, there is pneumatic cylinder 11 at the middle part of mount 7 through locking bolt 10 fixed mounting, the bilateral symmetry that is located pneumatic cylinder 11 on mount 7 installs pull rod 6, pull rod 6 one end is passed through flexible adjustment mechanism and is linked to each other with the cooperation of mount 7, drag hook 5 is installed through the screw-thread fit to the other end of pull rod 6, drag hook 5 and locating piece 4 hook-and-hook cooperation mutually, locating piece 4 is fixed on the lateral wall of the middle section 3 of the centrifugal pump of waiting to dismantle. Through adopting the frock of disassembling of above-mentioned structure, can be used for disassembling of multistage centrifugal pump impeller, it realizes the tight dismantlement in top of impeller and middle section with the help of pneumatic cylinder 11 to finally realize disassembling of all impellers.

Furthermore, flexible adjustment mechanism includes the adjusting collar 8 of suit on pull rod 6, adjusting collar 8 is through the end position of a plurality of lock nut 9 fixed mounting at pull rod 6. Through installation adjusting collar 8 mainly because impeller and middle section all comprise multistage, after dismantling a section, need change the length of pull rod 6 with another section middle section of hook, and then carry out the dismantling of next middle section and impeller.

Further, the adjusting sleeve 8 has a plurality of different length specifications. Can adapt to by adopting various different length specifications

Further, when in use, the end of the piston rod 12 of the hydraulic cylinder 11 is in contact fit with the end of the pump shaft 1. And further, the middle section 3 is pulled to slide along the pump shaft 1 through the pull rod 6 in the jacking process, and finally the pump shaft is withdrawn.

The utility model discloses a working process and principle do:

1. before disassembly, the tool is installed according to the position shown in the drawing, then the hydraulic cylinder 11 is manually started to extend the piston rod 12 of the hydraulic cylinder, at the moment, the pump shaft 1 is pressed, and the middle section and the impeller are pulled to move the impeller from the shaft until the impeller is disassembled;

2. after one middle section and the impeller are disassembled, the adjusting sleeve 8 is replaced again, so that the other end of the pull rod 6 is hooked and connected with the positioning block 4 on the middle section of the lower section again, and the rest of the middle section and the impeller are disassembled;

3. the impeller can be heated in an auxiliary mode in the disassembling process, so that the inner hole of the impeller is expanded, the friction resistance between the shaft and the impeller is reduced, and the disassembling efficiency is improved.

Claims

1. The utility model provides a frock is disassembled to multistage centrifugal pump impeller which characterized in that: it includes mount (7), the middle part of mount (7) has pneumatic cylinder (11) through locking bolt (10) fixed mounting, pull rod (6) are installed to the bilateral symmetry that is located pneumatic cylinder (11) on mount (7), pull rod (6) one end is passed through flexible adjustment mechanism and is linked to each other with mount (7) cooperation, drag hook (5) are installed through the screw-thread fit to the other end of pull rod (6), drag hook (5) and locating piece (4) hook mutually and hang the cooperation, locating piece (4) are fixed on the lateral wall of the middle section casing (3) of the centrifugal pump of treating the dismantlement.

2. The multistage centrifugal pump impeller disassembling tool according to claim 1, characterized in that: the telescopic adjusting mechanism comprises an adjusting sleeve (8) sleeved on the pull rod (6), and the adjusting sleeve (8) is fixedly installed at the end position of the pull rod (6) through a plurality of locking nuts (9).

3. The multistage centrifugal pump impeller disassembling tool according to claim 2, characterized in that: the adjusting sleeve (8) has a plurality of different length specifications.

4. The multistage centrifugal pump impeller disassembling tool according to claim 1, characterized in that: when the hydraulic pump is used, the end of a piston rod (12) of the hydraulic cylinder (11) is in contact fit with the end of the pump shaft (1).