CN216342830U

CN216342830U - Multistage centrifugal pump extracting tool

Info

Publication number: CN216342830U
Application number: CN202122489442.5U
Authority: CN
Inventors: 张宪冬; 唐俊; 周鸿雨; 李亚平
Original assignee: Sichuan Desheng Group Vanadium Titanium Co Ltd
Current assignee: Sichuan Desheng Group Vanadium Titanium Co Ltd
Priority date: 2021-10-15
Filing date: 2021-10-15
Publication date: 2022-04-19
Anticipated expiration: 2031-10-15

Abstract

The utility model discloses a multi-stage centrifugal pump disassembling tool, wherein the centrifugal pump comprises a plurality of pump bodies and a pump shaft which simultaneously penetrates through the pump bodies, the outer wall of each pump body is provided with two lug plates which are oppositely arranged, and the disassembling tool comprises a pull rod, a support rod and a telescopic driving mechanism; the two pull rods are arranged and respectively correspond to the two lug plates; one end of the pull rod is provided with a pull hole for being sleeved on the ear plate, and the other end of the pull rod is provided with a limiting hole; two ends of the supporting rod are respectively inserted into the corresponding limiting holes of the two pull rods; the telescopic driving mechanism is arranged between the pump shaft and the support rod and comprises a fixed end and a telescopic end, the fixed end is abutted against the support rod, and the telescopic end is used for applying thrust to the pump shaft. The multi-stage centrifugal pump with the lug plates is simple and reliable in structure, can be conveniently and quickly disassembled, is not easy to damage parts of the multi-stage centrifugal pump during disassembly, is convenient to operate, and can obviously improve the efficiency.

Description

Multistage centrifugal pump extracting tool

Technical Field

The utility model relates to a pump disassembling tool, in particular to a multistage centrifugal pump disassembling tool.

Background

The traditional method for disassembling the rotor pump from the rotor pump shaft is to use a large hammer to beat, the method is easy to cause the hidden danger of axial bending of the rotor pump shaft, and the operational reliability of the rotor pump is influenced after the rotor pump is assembled; in the worst case, the rotor pump shaft is scrapped, so that the subsequent maintenance cost intensity is high. A steel plant of vanadium-titanium Co., Ltd, the Sichuan Desheng group, uses 10 250SLD 500-57X 3T type multistage centrifugal pumps to supply water to a continuous casting machine. The multi-stage pump is a centrifugal pump combining a water inlet section and a water outlet section with a middle section through a pull rod, the output water pressure of the multi-stage pump can be very high, and the centrifugal force is obtained by the rotation of an impeller, so that materials are obtained. When the gas density reaches the working range of the mechanical vacuum pump, the gas is pumped out, so that high vacuum is gradually obtained. The multistage pump is a centrifugal pump which can change the volume because the volume of a pump cavity is changed to realize suction, compression and exhaust. Every pump is weight 377 kg's water pump, has a plurality of pump bodies and runs through the pump shaft of a plurality of pump bodies, and the both sides that the pump body surface is relative are equipped with an otic placode respectively, because do not have suitable instrument when dismantling greatly, lean on the manpower completely to carry out the dismantlement of the pump body through the mode of striking the otic placode and decompose, very easily cause the damage to water pump middle section, impeller and axle. Especially, when the parts are replaced, the water pump is taken to the ground to be disassembled as a whole due to the fact that no proper tool is provided, maintenance cost is greatly increased, labor efficiency is reduced, and labor intensity is increased. The problem that proper tools cannot be purchased in the market is always puzzled, so that a set of convenient and quick special tool is made to solve the problem of maintenance.

SUMMERY OF THE UTILITY MODEL

In view of this, the utility model provides a multi-stage centrifugal pump disassembling tool, which aims to overcome the defects that a multi-stage pump is difficult to disassemble and parts are easy to damage during disassembly in the prior art, so as to improve the maintenance efficiency of the multi-stage pump.

In order to solve the technical problems, the technical scheme adopted by the utility model is as follows:

a multi-stage centrifugal pump disassembling tool comprises a plurality of pump bodies and a pump shaft which penetrates through the pump bodies simultaneously, wherein the outer wall of each pump body is provided with two oppositely arranged lug plates; the two pull rods are arranged and respectively correspond to the two lug plates; one end of the pull rod is provided with a pull hole for being sleeved on the ear plate, and the other end of the pull rod is provided with a limiting hole; two ends of the supporting rod are respectively inserted into the corresponding limiting holes of the two pull rods; the telescopic driving mechanism is arranged between the pump shaft and the support rod and comprises a fixed end and a telescopic end, the fixed end is abutted against the support rod, and the telescopic end is used for applying thrust to the pump shaft.

As a further technical scheme of the scheme, a plurality of limiting holes are sequentially formed in the pull rod along the length direction of the pull rod.

As a further technical scheme of the above scheme, the limiting hole is triangular, rectangular, hexagonal or circular; the cross section profile of the supporting rod is consistent with the profile of the limiting hole.

As a further technical scheme of the above scheme, the disassembling tool further comprises a sleeve, wherein the sleeve is connected to the telescopic end of the telescopic driving mechanism and is sleeved on the pump shaft in a clearance mode.

As a further technical scheme of the scheme, the inner wall of the sleeve is provided with a protective sleeve.

As a further technical scheme of the scheme, the telescopic driving mechanism is a jack, a hydraulic cylinder, an air cylinder or an electric cylinder.

In summary, compared with the prior art, the utility model has the following advantages and beneficial effects: simple structure is reliable, but convenient and fast ground dismantles the multistage centrifugal pump that has the otic placode, and each spare part of not fragile multistage centrifugal pump when dismantling, convenient operation can show raises the efficiency.

Drawings

Fig. 1 is a schematic front view of the present invention.

Fig. 2 is a schematic top view of the present invention.

The explanation of each reference number in the figure is: the pump body 1, pump shaft 2, otic placode 3, pull rod 4, bracing piece 5, flexible actuating mechanism 6, sleeve pipe 7, spacing hole 8, trompil 9.

Detailed Description

In order that those skilled in the art will better understand the technical solutions of the present invention, the present invention will be further described in detail with reference to the following embodiments.

In the description of the present invention, it should be understood that the orientation or positional relationship referred to in the description of the orientation, such as the upper, lower, front, rear, left, right, etc., is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

In the description of the present invention, the meaning of a plurality of means is one or more, the meaning of a plurality of means is two or more, and larger, smaller, larger, etc. are understood as excluding the number, and larger, smaller, inner, etc. are understood as including the number. The terms first, second and the like, if any, are used for distinguishing technical features only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of technical features indicated.

In the description of the present invention, unless otherwise explicitly limited, terms such as arrangement, installation, connection and the like should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above terms in the present invention in combination with the specific contents of the technical solutions.

The utility model designs a special disassembling tool for a multistage centrifugal pump with lug plates 3, wherein the centrifugal pump comprises a pump shaft 2 and a plurality of pump bodies 1, and the outer wall of each pump body 1 is provided with two oppositely arranged lug plates 3. As shown in fig. 1 and 2, the removal tool includes a pull rod 4, a support rod 5, and a telescopic driving mechanism 6.

The pull rod 4 is formed by cutting a thick steel plate, a larger part is cut at one end of the pull rod 4, a pull hole 9 is cut at the part, and the size of the pull hole 9 is consistent with that of the lug plate 3 of the pump body 1 or slightly larger than that of the lug plate 3 of the pump body 1, so that the pull rod 4 is sleeved on the lug plate 3. Because the both sides of the pump body 1 all have otic placode 3, pull rod 4 processing has two to correspond two otic placodes 3 settings. The other end of two pull rods 4 has spacing hole 8, insert respectively two pull rods 4 corresponding spacing hole 8 at the both ends of bracing piece 5, bracing piece 5 is mainly used for supporting flexible actuating mechanism 6, and flexible actuating mechanism 6 locates pump shaft 2 with between the bracing piece 5, flexible actuating mechanism 6 has to support and leans on stiff end on the bracing piece 5 with be used for to the flexible end of thrust is applyed to pump shaft 2.

When the pump is used, the pull holes 9 of the two pull rods 4 are respectively sleeved on the two ear plates 3 of the pump body 1, then the support rod 5 is inserted into the limiting holes 8 of the two pull rods 4, and then the telescopic driving mechanism 6 is placed between the pump shaft 2 and the support rod 5, so that the telescopic end of the telescopic driving mechanism 6 is aligned with the pump shaft 2. Then the telescopic driving mechanism 6 is started to apply thrust to the pump shaft 2, and the pump body 1 sleeved by the pull rod 4 is separated under the driving of the reaction force, so that the disassembly of parts which are difficult to disassemble, such as a water pump coupling, a balance disc, an impeller, a middle section, a motor bearing and the like, is completed. After one pump body 1 is disassembled, other pump bodies 1 can be disassembled in sequence according to the method until the whole multistage centrifugal pump is disassembled.

For a multistage centrifugal pump with small specification, the whole multistage centrifugal pump can be disassembled only by arranging one limit hole 8, and the stroke of the telescopic driving mechanism 6 is enough to disassemble all the pump bodies 1. However, for a large-size and large-size multistage centrifugal pump, the stroke of the telescopic driving mechanism 6 is difficult to ensure that all the pump bodies 1 are disassembled, at this time, the length of the pull rod 4 needs to be extended, a plurality of limiting holes 8 are formed, and the proper limiting holes 8 are selected according to the length to disassemble the pump bodies 1.

Spacing hole 8 is for can be polygons such as triangle-shaped, rectangle, hexagon, also can be circular, circular arcs such as oval, and this application preferred is the square, and the square does benefit to processing, and bracing piece 5 in it can not take place to rotate, can provide stable support to flexible actuating mechanism 6. The cross section contour of the supporting rod 5 is consistent with the contour of the limiting hole 8.

Since there is no connection between the telescopic driving mechanism 6 and other components, the installation position thereof is not easy to control. Therefore, the disassembling tool further comprises a sleeve 7, wherein the sleeve 7 is connected to the telescopic end of the telescopic driving mechanism 6 in a welded mode and sleeved on the pump shaft 2 in a clearance mode. The sleeve 7 is used for being sleeved on the pump shaft 2, can be used for providing positioning for the position of the telescopic driving mechanism 6, and can also prevent the pump shaft 2 from being impacted. In order to further protect the pump shaft 2, the inner wall of the sleeve 7 is provided with a protective sleeve made of an elastic material, a flexible material or a plastic material with low hardness, such as polyurethane, so that the pump shaft 2 can be effectively protected from being damaged by impact.

In the application, the telescopic driving mechanism 6 is one of a jack, a hydraulic cylinder, a cylinder or an electric cylinder, and is characterized by outstanding portability, easy operation, easy disassembly, simple structure and the like, and is preferably the jack. The jack has no other matching parts, can be driven to extend only by hand, and has small volume and convenient carrying.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above preferred embodiments should not be considered as limiting the utility model, which is subject to the scope defined by the claims. It will be apparent to those skilled in the art that various modifications and adaptations can be made without departing from the spirit and scope of the utility model, and these modifications and adaptations should be considered within the scope of the utility model.

Claims

1. A multistage centrifugal pump extracting tool, the centrifugal pump includes a plurality of pump bodies (1) and runs through pump shaft (2) of a plurality of pump bodies (1) simultaneously, and the outer wall of every pump body (1) all has otic placode (3) of two relative settings, its characterized in that: the disassembling tool comprises a pull rod (4), a support rod (5) and a telescopic driving mechanism (6); the two pull rods (4) are arranged and respectively correspond to the two ear plates (3); one end of the pull rod (4) is provided with a pull hole (9) which is used for being sleeved on the ear plate (3), and the other end is provided with a limiting hole (8); two ends of the supporting rod (5) are respectively inserted into the corresponding limiting holes (8) of the two pull rods (4); the telescopic driving mechanism (6) is arranged between the pump shaft (2) and the support rods (5) and comprises a fixed end and a telescopic end, the fixed end is supported on the support rods (5), and the telescopic end is used for applying thrust to the pump shaft (2).

2. A multistage centrifugal pump disassembly tool of claim 1, wherein: the pull rod (4) is provided with a plurality of limiting holes (8) along the length direction in sequence.

3. A multistage centrifugal pump disassembly tool as claimed in claim 1 or 2, wherein: the limiting hole (8) is triangular, rectangular, hexagonal or circular; the cross section profile of the supporting rod (5) is consistent with the profile of the limiting hole (8).

4. A multistage centrifugal pump disassembly tool of claim 1, wherein: the disassembling tool further comprises a sleeve (7), and the sleeve (7) is connected to the telescopic end of the telescopic driving mechanism (6) and sleeved on the pump shaft (2) in a clearance mode.

5. A multistage centrifugal pump disassembly tool of claim 4, wherein: the inner wall of the sleeve (7) is provided with a protective sleeve.

6. A multistage centrifugal pump disassembly tool of claim 1, wherein: the telescopic driving mechanism (6) is a jack, a hydraulic cylinder, an air cylinder or an electric cylinder.