A kind of thermal power plant slurry circulating pump impeller dismounting tooling

Abstract

The utility model belongs to mechanical equipment field relates to a kind of thermal power plant slurry circulating pump impeller dismounting tool, including impeller locking nut, notched, dismounting tool, tooth head and outer convex nut, multiple notches are provided in the outer ring of impeller locking nut, dismounting tool is provided in the outer side of impeller locking nut, for the dismounting of the impeller locking nut, multiple tooth heads are provided in the top outer ring of dismounting tool, outer convex nut is fixedly installed in the bottom of dismounting tool.The utility model is made into slurry circulating pump impeller dismounting special tool by using the existing waste pump shaft design, processing and manufacturing, and through the practice research such as continuous reform, trial, optimization design, tool strength and use safety are improved, security risk is eliminated, to reach the purpose of improving the nature of maintenance personnel work safety and work efficiency.

Description

Technical Field

[0001] This utility model belongs to the field of mechanical equipment and relates to a tooling for disassembling and assembling the impeller of a slurry circulation pump in a thermal power plant. Background Technology

[0002] In the daily operation and maintenance of power plant desulfurization systems, the disassembly and overhaul of slurry circulation pumps is an important and complex task. However, during this process, slurry can easily enter the gaps of the impeller locking nut. This corrosive slurry can cause severe corrosion to the pump shaft end. Once corrosion occurs, the locking nut will become tightly stuck to the pump shaft, significantly increasing the difficulty of disassembly.

[0003] Even more challenging is the "embedded" design of the impeller locking nut, which leaves extremely limited operating space, making conventional disassembly tools ineffective. Faced with this problem, maintenance personnel often resort to traditional tools such as copper bars, flat chisels, and sledgehammers for brute force disassembly. This method is not only time-consuming and labor-intensive but also inefficient. Furthermore, due to a lack of specialized tools, maintenance personnel often improvise, but these tools lack sufficient strength and pose significant safety hazards during use, creating a major safety risk for maintenance work. A safer and more efficient solution is urgently needed. Utility Model Content

[0004] The purpose of this utility model is to provide a tooling for disassembling and assembling the impeller of a slurry circulation pump in a thermal power plant. This tooling solves the problems that during the maintenance of the slurry circulation pump in the desulfurization system of a power plant, slurry can easily enter the gap of the impeller locking nut and corrode the shaft end. In addition, the embedded design has a small operating space, and violent disassembly is time-consuming and labor-intensive. Furthermore, homemade tools pose significant risks.

[0005] The technical solution adopted by this utility model is a tool for disassembling and assembling an impeller of a slurry circulation pump in a thermal power plant, comprising: an impeller locking nut, a groove, a disassembly and assembly tool, a toothed head, and an externally protruding nut. The outer ring of the impeller locking nut has multiple grooves. The disassembly and assembly tool is provided on the outside of the impeller locking nut for disassembling and assembling the impeller locking nut. The top outer ring of the disassembly and assembly tool has multiple toothed heads, and the bottom of the disassembly and assembly tool is fixedly installed with an externally protruding nut.

[0006] The features of this utility model also include:

[0007] Furthermore, the impeller locking nut has an inner ring inside, and the inner ring has a threaded layer.

[0008] Furthermore, there are nine slots and tooth heads, all arranged in a circumferential ring structure.

[0009] Furthermore, the diameter of the tooth head is the same as that of the groove.

[0010] Furthermore, the slot and the tooth head are matched and fitted together, and the tooth head is inserted and fixed to the slot.

[0011] Furthermore, anti-slip textures are provided on both sides of the inside of the groove and on both sides of the outer end of the tooth head.

[0012] Furthermore, the disassembly and assembly tool is a circular structure that is matched with the impeller locking nut, and the length and width of the disassembly and assembly tool are the same as those of the impeller locking nut.

[0013] Furthermore, the convex nut has a hexagonal structure and is designed to be used in conjunction with the socket of the electric wrench.

[0014] The beneficial effects of this utility model are as follows:

[0015] 1. This utility model utilizes existing waste pump shafts to design and process special tooling for disassembling and assembling slurry circulation pump impellers, which improves both tool strength and safety, eliminates safety hazards, and achieves the goal of improving the inherent work safety and work efficiency of maintenance personnel.

[0016] 2. The tooling designed in this utility model has high strength, which can make the force evenly distributed when the locking nut is disassembled and assembled, and is suitable for heavy disassembly and assembly. It has a high degree of fit with the locking nut and will not fall off, which can effectively ensure the safety of maintenance personnel. This tool can be used with an electric wrench, making it more convenient, efficient, quick and labor-saving, and improving the safety of use.

[0017] 3. This utility model design can shorten the maintenance period, improve personnel safety and maintenance efficiency. In addition, the device is simple and convenient, uses few materials, is easy to manufacture on site, is simple and reliable, and is easy to use. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a top sectional view of the impeller locking nut and disassembly tool of this utility model.

[0020] Figure 2 This is a top view cross-sectional diagram of the impeller locking nut of this utility model.

[0021] Figure 3 This is a front view structural diagram of the disassembly and assembly tool of this utility model.

[0022] Figure 4 This is a bottom view sectional diagram of the disassembly and assembly tool of this utility model.

[0023] Figure 5 This is a top view sectional diagram of the disassembly and assembly tool of this utility model.

[0024] In the diagram: 1. Impeller locking nut; 101. Inner ring; 102. Threaded layer; 103. Groove; 2. Disassembly / assembly tool; 201. Tooth head; 202. Outer convex nut. Detailed Implementation

[0025] The technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0026] The following is in conjunction with the appendix Figure 1 To be continued Figure 5 The present invention will be described in detail with reference to specific embodiments:

[0027] A tooling for disassembling and assembling the impeller of a slurry circulation pump in a thermal power plant, referenced. Figure 1 , 2 It includes: an impeller locking nut 1, a slot 103, a disassembly and assembly tool 2, a toothed head 201, and an externally protruding nut 202. The outer ring of the impeller locking nut 1 has multiple slots 103. The disassembly and assembly tool 2 is provided on the outside of the impeller locking nut 1 for disassembling and assembling the impeller locking nut 1. The top outer ring of the disassembly and assembly tool 2 has multiple toothed heads 201. The bottom of the disassembly and assembly tool 2 is fixedly installed with an externally protruding nut 202.

[0028] The impeller locking nut 1 has an inner ring 101 inside, and the inner ring 101 has a threaded layer 102. When the impeller locking nut 1 is in use, it can be installed on the rotating shaft of the circulating pump through the threaded layer 102 of the inner ring 101, between the front cover plate (suction side) and the wear-resistant plate (discharge side). The gap with the front cover plate is maintained by the axial adjustment mechanism (usually 3-5mm) to maintain safe operation.

[0029] There are nine slots 103 and tooth heads 201, all arranged in a circumferential ring structure. The tooth heads 201 have the same diameter as the slots 103. The slots 103 and tooth heads 201 are matched and inserted into each other for fixation.

[0030] The disassembly and assembly tool 2 uses a suitable old pump shaft with high on-site strength as the raw material. Combined with the nine "grooves 103" structure of the impeller locking nut 1, nine "tooth heads 201" are made on the disassembly and assembly tool 2 to fit tightly with the nine "grooves 103". In this embodiment, a special tool for disassembling and assembling the impeller of the slurry circulation pump is designed and manufactured by utilizing existing waste pump shafts. Through continuous modification, trial use, and design optimization, the tool's strength and safety are improved, eliminating safety hazards. This aims to improve the inherent work safety and efficiency of maintenance personnel. This device has low manufacturing cost, high safety factor, and is easy and convenient to use, enabling portable disassembly and assembly of the slurry circulation pump impeller.

[0031] refer to Figure 3 , 4 The groove 103 has anti-slip textures on both sides inside and on both sides of the toothed head 201 outside. When disassembling the impeller locking nut 1, insert the nine toothed heads 201 on the disassembly tool 2 into the nine grooves 103 of the impeller locking nut 1, so that the nine toothed heads 201 fit tightly with the nine grooves 103. Insert the socket end of the electric wrench into the protruding nut 202 and start the electric wrench to provide torque power to the protruding nut 202 and the disassembly tool 2, and quickly turn the impeller locking nut 1 off. When the nine toothed heads 201 fit tightly with the nine grooves 103, the anti-slip textures on both sides of the outer end of the toothed head 201 will fit tightly with the anti-slip textures on both sides of the inside of the groove 103, which can increase the firmness between the toothed head 201 and the groove 103 and prevent the disassembly tool 2 from slipping on the impeller locking nut 1.

[0032] The disassembly and assembly tool 2 is a circular structure that is matched with the impeller locking nut 1. The length and width of the disassembly and assembly tool 2 and the impeller locking nut 1 are the same. The protruding nut 202 is a hexagonal structure and is matched with the socket of the electric wrench.

[0033] The hexagonal convex nut 202 of the disassembly and assembly tool 2 can be used with the socket of the electric wrench to ensure that the tool has sufficient strength. At the same time, it can ensure that the impeller locking nut 1 is evenly stressed and not easy to fall off, thus ensuring safe and convenient use. In addition, the device is simple and convenient, uses few materials, is easy to make on site, is simple and reliable, easy to use, has low manufacturing cost, high safety factor, and good overall practicality.

[0034] The impeller disassembly and assembly tool for a slurry circulation pump in a thermal power plant provided by this utility model works as follows: First, preparation work is carried out by aligning the nine toothed tips 201 on the disassembly and assembly tool 2 with the nine slots 103 on the outer ring of the impeller locking nut 1. Next, a fitting and fixing operation is performed by inserting the toothed tips 201 into the slots 103, ensuring a tight fit. During this process, the anti-slip textures on both sides of the outer end of the toothed tips 201 closely adhere to the anti-slip textures on both sides of the inner side of the slots 103, thus preventing slippage between the disassembly and assembly tool 2 and the impeller locking nut 1. Finally, a torque-providing step is performed by inserting the socket end of an electric wrench into the hexagonal convex nut 202 at the bottom of the disassembly and assembly tool 2, which is matched with the electric wrench socket. The electric wrench is then activated, and torque is transmitted through the convex nut 202 and the disassembly and assembly tool 2, thereby quickly loosening and removing the impeller locking nut 1.

[0035] The advantages of the impeller disassembly and assembly tool for a thermal power plant slurry circulation pump provided by this utility model are:

[0036] It effectively solves the problem of pump shaft corrosion caused by slurry seeping into the impeller locking nut gap, making the locking nut difficult to disassemble. It eliminates the need for violent hammering disassembly, significantly reducing maintenance time and manpower. Specifically designed for "embedded" impeller locking nuts, the disassembly and assembly tools are matched with the impeller locking nut structure, adapting to confined operating spaces and solving the problem of traditional tools being unusable. The disassembly and assembly tools are made from high-strength old pump shafts, meeting strength standards. Combined with the tight fit between the toothed head and the groove and the anti-slip texture design, the robustness is enhanced, avoiding the risk of injury caused by insufficient strength of homemade simple tools, and improving the work safety of maintenance personnel. At the same time, the device requires few materials, is easy to manufacture on-site, has a simple and reliable structure, is convenient to use, and has a high overall practicality and safety factor.

[0037] The present invention has been further described above with reference to specific embodiments. However, it should be understood that the specific description herein should not be construed as limiting the substance and scope of the present invention. Various modifications made by those skilled in the art to the above embodiments after reading this specification are all within the scope of protection of the present invention.

Claims

1. A tooling for disassembling and assembling an impeller of a slurry circulation pump in a thermal power plant, characterized in that, It includes an impeller locking nut (1), a slot (103), a disassembly and assembly tool (2), a toothed head (201), and an externally protruding nut (202). The outer ring of the impeller locking nut (1) has multiple slots (103). The disassembly and assembly tool (2) is provided on the outside of the impeller locking nut (1) for disassembling and assembling the impeller locking nut (1). The top outer ring of the disassembly and assembly tool (2) has multiple toothed heads (201), and the bottom of the disassembly and assembly tool (2) is fixedly installed with an externally protruding nut (202).

2. The impeller disassembly and assembly tooling for a thermal power plant slurry circulation pump according to claim 1, characterized in that, The impeller locking nut (1) has an inner ring (101) inside, and the inner ring (101) has a threaded layer (102).

3. The impeller disassembly and assembly tooling for a thermal power plant slurry circulation pump according to claim 1, characterized in that, There are nine slots (103) and nine tooth heads (201), all arranged in a circumferential ring structure.

4. The impeller disassembly and assembly tooling for a thermal power plant slurry circulation pump according to claim 1, characterized in that, The tooth head (201) has the same diameter as the groove (103).

5. The impeller disassembly and assembly tooling for a thermal power plant slurry circulation pump according to claim 1, characterized in that, The slot (103) and the tooth head (201) are matched and the tooth head (201) is inserted and fixed to the slot (103).

6. The impeller disassembly and assembly tooling for a thermal power plant slurry circulation pump according to claim 1, characterized in that, Anti-slip textures are provided on both sides of the inside of the groove (103) and on both sides of the outside of the tooth head (201).

7. The impeller disassembly and assembly tooling for a thermal power plant slurry circulation pump according to claim 1, characterized in that, The disassembly and assembly tool (2) is a circular structure and is matched with the impeller locking nut (1). The length, width and diameter of the disassembly and assembly tool (2) are the same as those of the impeller locking nut (1).

8. The impeller disassembly and assembly tooling for a thermal power plant slurry circulation pump according to claim 1, characterized in that, The protruding nut (202) has a hexagonal structure and is matched with the socket of the electric wrench.

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