Novel impeller dismounting tool

Abstract

The utility model discloses a novel impeller dismounting tool which comprises a back plate with the same size as an impeller wear-resisting plate, a strip-shaped groove with a single opening is formed in the surface of the back plate, and in the impeller dismounting process, a shaft is sleeved with the strip-shaped groove, and the back plate is attached to the impeller wear-resisting plate; the supporting pieces are symmetrically mounted on the two sides of the back plate; the jacking part is welded to the top of the supporting part, and the jacking part is moved in the direction away from the impeller through jacking of a jack or a steel cable or other structures, so that separation of the impeller is achieved; an annular cavity for placing an impeller is formed among the back plate, the supporting piece and the jacking piece, and the supporting piece comprises brackets symmetrically welded to the edges of the two sides of the back plate; according to the design, compared with a traditional jack support, the back plate is integrally attached to the impeller, the impeller is evenly stressed and easier to detach, the working efficiency is improved, and meanwhile the back plate is simple in structure, convenient to machine, low in manufacturing cost and high in practicability and generalization performance.

Description

Technical Field

[0001] The utility model belongs to the technical field of impeller disassembly of power plant pumps, and particularly relates to a novel impeller disassembly tool. Background Art

[0002] The impeller of the slurry circulating pump in a thermal power plant is fixed on the shaft. Sometimes, if the sealing effect of the sealing strip of the impeller is not good, the slurry will enter the joint surface between the impeller and the shaft. After long-term operation, it is very difficult to disassemble when the joint surface gap between the impeller and the shaft is filled with slurry. Currently, the conventional method is to directly disassemble by cooperating a jack with a bracket, but this method will cause uneven force on the impeller, the whole disassembly process is long, and the disassembly difficulty is also large. Therefore, there are great limitations in actual use and there is room for improvement. Content of the Utility Model

[0003] The purpose of the utility model is to provide a novel impeller disassembly tool to solve the problem of difficult disassembly in the disassembly of the impeller of the slurry circulating pump in a thermal power plant as mentioned in the above background art.

[0004] To achieve the above purpose, the utility model provides the following technical solution: A novel impeller disassembly tool, including a back plate having the same size as the wear-resistant plate of the impeller, with a strip-shaped groove having a single opening on its surface. During the disassembly of the impeller, the strip-shaped groove is sleeved on the shaft, and the back plate is attached to the wear-resistant plate of the impeller; support members symmetrically installed on both sides of the back plate; a jacking member welded to the top of the support members, and the jacking member is moved away from the impeller by jacking with a jack or structures such as steel cables to achieve the separation of the impeller; an annular cavity for placing the impeller is formed among the back plate, the support members and the jacking member.

[0005] Preferably, the support members include brackets symmetrically welded to the edges on both sides of the back plate, and there is a spacing between the brackets and the strip-shaped groove.

[0006] Preferably, the jacking member is an I-shaped steel beam welded to the tops of the two brackets. A moving groove is opened at the bottom of the I-shaped steel beam, and a limiting component is arranged in the moving groove. The limiting component is composed of a blocking member and an adjusting member. The blocking member is slidably arranged in the moving groove, one end of the adjusting member is fixed to the moving groove, and the other end is locked or slid with the blocking member. During use, the position is adjusted by sliding the blocking member in the moving groove, and the fixing of the blocking member after adjusting the position is achieved through the adjusting member.

[0007] Preferably, the blocking member is a limit block, and an adjustment groove is provided on the surface of the limit block. When the impeller is disassembled, the jack or the steel cable separated by external pulling is set between the two limit blocks, and the steel cable is limited by the limit blocks to avoid sliding and misalignment, ensuring that the position where the force is applied is in the center of the I-beam during separation. At the same time, the limit block can be adjusted according to the diameter of the jack or the steel cable separated by external pulling, and the adjustment member is connected with the adjustment groove.

[0008] Preferably, the adjusting member comprises a stud, one end of which is welded to the movable groove, and the other end of which is sleeved with a limiting nut, wherein the limiting nut abuts against the bottom end surface of the limiting block, and the limiting block is tightened by tightening the limiting nut.

[0009] Preferably, a lifting lug is fixed to the end surface of the back plate, and the lifting lug is arranged opposite to the opening of the strip groove.

[0010] Preferably, the strip-shaped groove is located in the middle of the back plate, and the closed end of the strip-shaped groove is semicircular, so as to be conveniently fitted with the shaft.

[0011] Compared with the prior art, the beneficial effects of the utility model are:

[0012] Through the design of the utility model, compared with the traditional jack bracket, the back plate is attached to the impeller as a whole, so that the impeller is evenly stressed as a whole, easier to disassemble, and improve work efficiency. At the same time, the utility model has a simple structure, convenient processing, low production cost, and high practicality and promotion. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the structure of the utility model;

[0014] Figure 2 It is a bottom view of the utility model;

[0015] Figure 3 For this utility model Figure 2 A magnified diagram of the middle A area;

[0016] Figure 4 It is a schematic diagram of the state of the utility model when in use.

[0017] In the figure:

[0018] 100, back plate; 100a, strip groove; 101, lifting ear;

[0019] 200, ox leg;

[0020] 300, I-beam; 300a, movable slot; 301, limit block; 301a, adjustment slot; 302, limit nut; 303, stud. DETAILED DESCRIPTION

[0021] Next, in combination with the accompanying drawings in the embodiments of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present invention.

[0022] Please refer to Figures 1 to 4 , the present invention provides a technical solution: a new type of impeller disassembly tool, including

[0023] a back plate 100 having the same size as the impeller wear plate, on the surface of which a strip-shaped groove 100a with a single opening is provided. During the disassembly of the impeller, the strip-shaped groove 100a is sleeved on the shaft, and the back plate 100 is attached to the wear plate of the impeller;

[0024] supporting members symmetrically installed on both sides of the back plate 100;

[0025] a jacking member welded to the top of the supporting member, and the jacking member is moved away from the impeller by jacking with a jack or structures such as steel cables to achieve the separation of the impeller;

[0026] An annular cavity for placing the impeller is formed among the back plate 100, the supporting members, and the jacking member.

[0027] In this embodiment, preferably, the supporting members include brackets 200 symmetrically welded to the two side edges of the back plate 100, and a gap is left between the brackets 200 and the strip-shaped groove 100a.

[0028] In this embodiment, preferably, the jacking member is an I-beam 300 welded to the tops of the two brackets 200. A moving groove 300a is provided at the bottom of the I-beam 300, and a limiting component is arranged in the moving groove 300a. The limiting component is composed of a blocking member and an adjusting member. The blocking member is slidably arranged in the moving groove 300a, one end of the adjusting member is fixed to the moving groove 300a, and the other end is locked or slid with the blocking member. During use, the position is adjusted by sliding the blocking member in the moving groove 300a, and then the position of the blocking member after adjustment is fixed by the adjusting member.

[0029] In this embodiment, preferably, the blocking member is a limit block 301. An adjustment groove 301a is formed on the surface of the limit block 301. During the disassembly of the impeller, a jack or a steel cable for external pulling separation is arranged between the two limit blocks 301. The limit block 301 is used to limit the steel cable, avoiding the phenomenon of sliding and misalignment, ensuring that the position where the force is applied is at the exact center of the I-beam 300 during separation. At the same time, the limit block 301 can be adjusted according to the diameter of the jack or the steel cable for external pulling separation, and the adjusting member is connected through the adjustment groove 301a.

[0030] In this embodiment, preferably, the adjusting member includes a stud 303. One end of the stud 303 is welded to the moving groove 300a, and the other end is sleeved with a limit nut 302. The limit nut 302 abuts against the bottom end surface of the limit block 301, and the limit block 301 is tightened by tightening the limit nut 302.

[0031] In this embodiment, preferably, a lifting lug 101 is further fixed to the end face of the back plate 100, and the lifting lug 101 is arranged opposite to the opening of the strip-shaped groove 100a.

[0032] In this embodiment, preferably, the strip-shaped groove 100a is located at the middle position of the back plate 100, and the closed end of the strip-shaped groove 100a is semicircular, which is convenient for fitting with the shaft.

[0033] Although the embodiments of the present invention have been shown and described (see the above detailed description), for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A novel impeller disassembly tool, characterized in that: including a backplane (100) with a strip-shaped groove (100a) having a single opening on its surface; support members symmetrically installed on both sides of the backplane (100); lifting members welded to the tops of the support members; an annular cavity for placing an impeller is formed among the backplane (100), the support members and the lifting members; the support members include brackets (200) symmetrically welded to the two side edges of the backplane (100), and there is a gap between the brackets (200) and the strip-shaped groove (100a); the lifting members are I-beams (300) welded to the tops of the two brackets (200), a moving groove (300a) is formed at the bottom of the I-beam (300), a limiting component is arranged in the moving groove (300a), and the limiting component is composed of a blocking member and an adjusting member, wherein the blocking member is slidably arranged in the moving groove (300a), one end of the adjusting member is fixed to the moving groove (300a), and the other end is locked or slid with the blocking member.

2. A novel impeller disassembly tool according to claim 1, characterized in that: the blocking member is a limiting block (301), an adjusting groove (301a) is formed on the surface of the limiting block (301), and the adjusting member is connected through the adjusting groove (301a).

3. A novel impeller disassembly tool according to claim 2, wherein: the adjusting member includes a stud (303), one end of the stud (303) is welded to the moving groove (300a), a limiting nut (302) is sleeved on the other end, and the limiting nut (302) abuts against the bottom end surface of the limiting block (301).

4. A novel impeller disassembly tool according to claim 1, wherein: a lifting lug (101) is further fixed to the end face of the backplane (100), and the lifting lug (101) is arranged opposite to the opening of the strip-shaped groove (100a).

5. A novel impeller disassembly tool according to claim 1, characterized in that: the strip-shaped groove (100a) is located in the middle of the backplane (100), and the closed end of the strip-shaped groove (100a) is semi-circular.

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