A slurry circulating pump impeller fastening nut dismounting tool

Abstract

The utility model relates to a tool technical field, especially a kind of slurry circulating pump impeller fastening nut dismounting tool, including disc, the edge of the upper surface of disc is equipped with multiple positioning columns along its circumferential equidistance, the middle part of disc lower surface is fixedly provided with connecting piece, the middle part of disc is equipped with the threaded hole that is penetrated disc and connecting piece in axial direction, threaded hole is threadedly connected with threaded rod. The utility model is equipped with multiple positioning columns along circumferential equidistance in the edge of disc, can be realized accurate clamping with the nut to be disassembled, effectively solved the problem that the existing tool is not firmly clamped and slips due to insufficient size matching degree. The tool is optimized by structure design, not only expands the stress contact area to disperse stress, but also simplifies the operation process, realizes single person efficient operation, significantly reduces the consumption of manpower, effectively improves the dismounting efficiency, provides more reliable, convenient tool support for the maintenance of desulfurization system.

Description

Technical Field

[0001] This utility model relates to the field of disassembly and assembly tools, and in particular to a tool for disassembling and assembling the fastening nut of a slurry circulation pump impeller. Background Technology

[0002] In the maintenance and repair of desulfurization systems, the disassembly and assembly of the impeller fastening nut of the desulfurization slurry circulation pump is a crucial step. However, existing tools for disassembling and assembling this impeller fastening nut have many obvious defects, which seriously affect work efficiency, maintenance quality, and operational safety. Specifically, the existing tools are not dimensionally compatible with the nuts to be installed or removed, easily leading to loose fastening and slippage. This inadequacy not only hinders disassembly and assembly operations and reduces efficiency, but also poses a direct safety threat to operators due to the impact force of tool slippage or accidental movement of parts, increasing the risk of injury. Furthermore, the existing tools have a small force-bearing point, requiring multiple people to operate, making the disassembly and assembly process laborious and further reducing work efficiency. Improper operation can also easily damage components during this process. In addition, due to the unreasonable design of the tools, the impeller fastening bolts often suffer from insufficient tightening force or incomplete tightening, which may lead to maintenance quality accidents and affect the normal operation of the desulfurization slurry circulation pump. Based on the problems of the existing tools mentioned above, and combined with multiple on-site disassembly and assembly experiences, it is particularly necessary to develop a special tool for disassembling and assembling the impeller fastening nut of the desulfurization slurry circulation pump. Utility Model Content

[0003] The purpose of this utility model is to provide a tool for disassembling and assembling impeller fastening nuts in slurry circulating pumps, especially suitable for solving the problem of impeller fastening nuts being difficult to tighten properly and prone to loosening during impeller disassembly and assembly. This utility model provides a tool for disassembling and assembling the fastening nut of a slurry circulation pump impeller, including a disc. Multiple positioning pins are evenly spaced along the circumference of the edge of the upper surface of the disc. A connecting piece is fixedly provided in the middle of the lower surface of the disc. A threaded hole is provided in the middle of the disc, penetrating the disc and the connecting piece in the axial direction. A threaded rod is threadedly connected in the threaded hole.

[0004] Furthermore, the number of positioning pins matches the number of notches around the impeller fastening nut of the slurry circulation pump.

[0005] Furthermore, the connector is a hexagonal head.

[0006] Furthermore, it also includes a hexagonal sleeve that matches the hexagonal head.

[0007] Furthermore, the hexagonal sleeve has a through hole along its radial direction, and a lever is inserted into the through hole.

[0008] Furthermore, the bottom of the hexagonal sleeve has a hexagonal structure.

[0009] Furthermore, a retaining block is fixedly sleeved on the threaded rod.

[0010] Furthermore, the card block has a hexagonal structure.

[0011] Furthermore, the locking block is welded together with the threaded rod.

[0012] Furthermore, the upper surface of the disc is provided with a groove in the middle that matches the protruding part of the slurry circulation pump impeller fastening nut.

[0013] Beneficial effects: This invention utilizes multiple positioning pins evenly spaced along the circumferential edge of a disc to precisely engage with the nut to be installed or removed, effectively solving the problem of insecure engagement and slippage caused by insufficient dimensional matching in existing tools. This design ensures the stability of the assembly and disassembly process, avoids operational obstruction due to tool slippage, and significantly improves work efficiency. The secure engagement between the positioning pins and the nut greatly reduces the possibility of impact force or accidental movement of parts when the tool slips, fundamentally reducing safety threats to operators, lowering the risk of injury, and providing more reliable safety assurance for maintenance work. The tool secures the disc and nut by passing a threaded rod through the threaded hole in the disc and the threaded hole in the nut itself. During assembly and disassembly, there is no need to hold the disc by hand; a single person can complete the operation without the need for multiple people, saving manpower and further improving work efficiency. Attached Figure Description

[0014] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0015] Figure 1 This is a schematic diagram of the overall tool of this utility model; Figure 2 A schematic diagram of the structure of the impeller fastening nut of a slurry circulation pump; Figure 3 This is a structural schematic diagram of the disc from the bottom view of this utility model; Figure 4 This is a schematic diagram illustrating the structure of the threaded hole at the bottom of the disc in this utility model; Figure 5 This is a schematic diagram of the tool in operation according to this utility model; Figure 6This is a schematic diagram of the sleeve structure in this utility model; Figure 7 This is a schematic diagram of the sleeve in operation in this utility model.

[0016] Explanation of reference numerals in the attached diagram: 1-disc, 2-locating pin, 3-hexagonal head, 4-threaded hole, 5-threaded rod, 6-notch, 7-hexagonal sleeve, 8-through hole, 9-lever, 10-hexagonal locking block, 11-groove. Detailed Implementation

[0017] The technical solution of this utility model will be clearly and completely described below with reference to the embodiments. Obviously, the described embodiments are only some embodiments of this utility model, 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.

[0018] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0019] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more of the stated features. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified. Furthermore, the terms "installed," "connected," and "linked" should be interpreted broadly; for example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0020] Example 1 First, a brief introduction to the structure of the impeller fastening nut of the slurry circulation pump will be given, such as... Figure 2As shown, the central protruding metal cylinder is its main body, and the flange-shaped disc with evenly distributed notches 6 connected to the end is its most prominent feature. The flange-shaped disc has an internal threaded hole in the center, which, by tightening onto the thread at the end of the pump shaft, plays the role of axially pressing the impeller and preventing the impeller from loosening during operation.

[0021] A tool for disassembling and assembling the impeller fastening nut of a slurry circulation pump, such as Figure 1 and 3 As shown in Figure 7, the tool includes a disc 1, which serves as the basic support component. Along its circumference, multiple locating posts 2 are spaced at equal intervals along the edge of its upper surface. These locating posts 2 are designed to precisely align with the notches on the slurry pump impeller fastening nut, ensuring the tool does not shift during use. A groove 11, matching the protrusion of the slurry pump impeller fastening nut, is located in the center of the upper surface of the disc. A hexagonal head 3 is fixedly mounted in the center of the lower surface of the disc; this hexagonal head is a key component for transmitting torque. Notably, a threaded hole 4 is located at the very center of the disc, extending axially through both the disc 1 and the hexagonal head 3 below it. Inside this threaded hole, a threaded rod 5 is threadedly connected, allowing the tool and the slurry pump impeller fastening nut to be joined together without manual intervention.

[0022] The number of positioning pins 2 is strictly matched with the number of 6 notches around the slurry circulation pump impeller fastening nut. This design ensures that each positioning pin can accurately fit into its corresponding notch during disassembly and assembly, forming a stable fit. This effectively prevents relative slippage between the tool and the nut, greatly improving the safety and stability of operation and avoiding component damage or operational errors caused by inaccurate positioning.

[0023] To complement the operation of the hexagonal head, this tool is also equipped with a matching hexagonal socket 7. The inner contour of the hexagonal socket 7 perfectly matches the outer contour of the hexagonal head 3, tightly enveloping the hexagonal head and ensuring effective force transmission when external force is applied, preventing slippage and making operation more effortless and efficient. The hexagonal socket also features a through hole 8 along its radial direction, into which a lever 9 can be inserted. The lever 9 amplifies the force applied by the operator by increasing the lever arm. According to the lever principle, the longer the lever arm, the smaller the force required, thus easily handling nuts with high tightness and reducing the operator's workload. Furthermore, the socket allows for operation outside the equipment. The bottom of the hexagonal socket has a hexagonal structure; in addition to using a lever, a wrench can also be used to rotate the socket through its bottom.

[0024] A hexagonal locking block 10 is also fixedly welded onto the threaded rod 5, serving as a force-bearing point. This facilitates the operator's rotation and adjustment of the threaded rod 5, ensuring that the tool can accurately engage with the nut. The hexagonal structure not only facilitates clamping and operation with tools such as wrenches, but its multiple planes also provide stable force-bearing points, preventing slippage during rotation of the threaded rod, ensuring smooth adjustment, and improving operational accuracy.

[0025] Working and usage process: Installation tool stage Alignment and positioning: The operator aligns the positioning post 2 on the upper surface of the tool disc 1 with the evenly distributed notches 6 on the flange of the slurry circulation pump impeller fastening nut, while making the groove 11 in the middle of the disc fit against the central protrusion of the nut, ensuring that the positioning post 2 is fully embedded in the notch 6, forming a preliminary circumferential fixation. Locking tool: By holding the hexagonal locking block 10 on the threaded rod 5 with a wrench, rotate the threaded rod 5 so that the front end of the threaded rod 5 gradually engages with the internal threaded hole of the nut until the tool and the nut are tightly fitted. At this time, the tool is firmly fixed to the nut by the locking action of the threaded rod 5 and can remain stable without manual support. Disassembly and assembly stage Tightening nut operation: Place the hexagonal sleeve 7 onto the hexagonal head 3 below the disc 1, ensuring that the inner contour of the sleeve perfectly matches the outer contour of the hexagonal head. If lever operation is selected, insert lever 9 into the radial through hole 8 of the hexagonal sleeve and fix it. The operator pulls the lever in the tightening direction, using the lever principle to amplify the force. Through the force transmission between the sleeve and the hexagonal head, the disc and nut rotate synchronously until the nut reaches the specified tightening degree. If using a wrench, engage the wrench with the hexagonal structure at the bottom of the hexagonal socket, and rotate the wrench in the tightening direction. The torque is transmitted through the socket to complete the tightening. Nut removal procedure: Similarly, fit the hexagonal sleeve 7 onto the hexagonal head 3, ensuring a tight fit. By using a lever or wrench to apply force in the disassembly direction, and with the help of the tool's positioning and locking structure and force transmission mechanism, the tightening friction of the nut is overcome, causing the nut to rotate synchronously until the nut is completely disengaged from the thread at the end of the pump shaft. Tool removal stage After completing the disassembly and assembly operation, use a wrench to rotate the hexagonal locking block 10 on the threaded rod 5 in the opposite direction to disengage the threaded rod 4 from the nut. Then, remove the entire tool from the nut to complete a complete disassembly and assembly operation. Throughout the entire process, the precise fit between the positioning pin 2 and the notch 6, the locking and fixing of the threaded rod 5, and the labor-saving force transmission design of the lever / wrench significantly improve the safety, stability, and efficiency of the operation, effectively avoiding component damage or operational errors caused by inaccurate positioning in traditional disassembly and assembly methods. Through optimized structural design, this tool not only expands the contact area to distribute stress but also simplifies the operation process, enabling efficient operation by a single person, significantly reducing manpower consumption, effectively improving disassembly and assembly efficiency, and providing more reliable and convenient tool support for the maintenance and repair of desulfurization systems.

[0026] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. A tool for disassembling and assembling the impeller fastening nut of a slurry circulation pump, characterized in that, The device includes a disc, with multiple positioning posts evenly spaced along the circumference of the edge of the upper surface of the disc, a connector fixedly provided in the middle of the lower surface of the disc, and a threaded hole in the middle of the disc penetrating the disc and the connector in the axial direction, with a threaded rod threadedly connected in the threaded hole.

2. The tool for disassembling and assembling the impeller fastening nut of the slurry circulation pump according to claim 1, characterized in that, The number of positioning pins matches the number of notches around the impeller fastening nut of the slurry circulation pump.

3. The tool for disassembling and assembling the impeller fastening nut of the slurry circulation pump according to claim 1, characterized in that, The connector is a hexagonal head.

4. The tool for disassembling and assembling the impeller fastening nut of the slurry circulation pump according to claim 3, characterized in that, It also includes a hexagonal sleeve that matches the hexagonal head.

5. The tool for disassembling and assembling the impeller fastening nut of the slurry circulation pump according to claim 4, characterized in that, The hexagonal sleeve has a through hole along its radial direction, and a lever is inserted into the through hole.

6. The tool for disassembling and assembling the impeller fastening nut of the slurry circulation pump according to claim 5, characterized in that, The bottom of the hexagonal sleeve has a hexagonal structure.

7. The tool for disassembling and assembling the impeller fastening nut of the slurry circulation pump according to claim 1, characterized in that, A retaining block is fixedly sleeved on the threaded rod.

8. The tool for disassembling and assembling the impeller fastening nut of the slurry circulation pump according to claim 7, characterized in that, The card block has a hexagonal structure.

9. The tool for disassembling and assembling the impeller fastening nut of the slurry circulation pump according to claim 8, characterized in that, The card block is welded together with the threaded rod.

10. The tool for disassembling and assembling the impeller fastening nut of the slurry circulation pump according to claim 1, characterized in that, The upper surface of the disc has a groove in the middle that matches the protruding part of the slurry circulation pump impeller fastening nut.

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