A centrifugal pump dismounting tool

Abstract

The utility model relates to tool technology field, and disclose a kind of centrifugal pump dismounting tool, including screw rod, the mobile block of being equipped with with its thread cooperation is set on screw rod, the clamping jaw piece of being equipped with multiple parts to the grabbing of mobile block, the clamping jaw piece includes the claw body that can be adjusted in length, the utility model can be adjusted by the length of claw body, can adapt to different sizes of centrifugal pump bearing, bearing seat and coupling and other parts, greatly improve the versatility of tool, reduce the trouble of maintenance personnel for responding different size parts and preparing multiple tools, reduce maintenance cost.

Description

Technical Field

[0001] This utility model relates to the field of disassembly and assembly tools, and in particular to a centrifugal pump disassembly and assembly tool. Background Technology

[0002] Centrifugal pumps, as a common and important fluid transport device, are widely used in many industries such as chemical, power, water supply and drainage, and petroleum. In daily production and operation, centrifugal pumps require regular maintenance, inspection, and troubleshooting, and the disassembly and installation of centrifugal pumps are key aspects of these tasks.

[0003] In the structure of a centrifugal pump, the bearing housing and coupling are important components. The bearing housing supports the pump's bearings, ensuring stable shaft operation; the coupling connects the pump shaft and the motor shaft, transmitting power. However, removing the bearing housing and coupling during the disassembly of a centrifugal pump often presents significant difficulties.

[0004] Currently, traditional centrifugal pump disassembly and assembly primarily rely on manual operation. Because bearing housings and couplings are typically tightly fitted to the pump body or shaft, and over long-term use, corrosion and wear can further tighten this fit, making manual removal by hand extremely difficult. Forcibly disassembling by hand not only wastes significant manpower and time, reducing work efficiency, but can also damage components such as bearing housings, couplings, and the pump body due to uneven force, affecting the centrifugal pump's performance and lifespan.

[0005] To address the difficulty of manual disassembly, some disassembly and assembly tools have emerged on the market. However, most of these tools have limitations. For example, the length of the pull claws on some tools is fixed, making it impossible to flexibly adjust them according to the size of different centrifugal pumps and the specific installation positions of bearing housings and couplings. This results in a narrow range of applications, requiring the preparation of multiple tools of different sizes when dealing with centrifugal pumps of different specifications, increasing maintenance costs and management difficulty. Utility Model Content

[0006] This utility model addresses the shortcomings of existing technologies by providing a centrifugal pump assembly and disassembly tool. This tool has adjustable-length grippers that can accommodate centrifugal pump parts of different sizes and can grip the parts more stably, thereby improving the efficiency and convenience of centrifugal pump assembly and disassembly.

[0007] To achieve the above objectives, the present invention adopts the following technical solution:

[0008] A centrifugal pump disassembly and assembly tool includes a screw, a movable block that is threadedly engaged with the screw, and a plurality of grippers for gripping parts on the movable block, the grippers including claw bodies that can be adjusted in length.

[0009] Preferably, the movable block is provided with multiple connection ends connected to the gripper components. The multiple gripper components are rotatably connected to the multiple connection ends respectively. The multiple gripper components can rotate independently, and the position of each gripper can be flexibly adjusted to achieve a more uniform force distribution, thereby further improving the stability and reliability of the disassembly process.

[0010] Preferably, the gripper further includes a hinge plate, one end of which is rotatably connected to the connecting end on the moving block, and the other end of which is rotatably connected to the gripper body. The hinge plate further optimizes the structure and function of the gripper. Through the rotatable connection at both ends, the hinge plate plays a flexible transmission and adjustment role.

[0011] Preferably, the first connecting end is provided with a mounting groove, and a torsion spring is provided in the mounting groove. The two ends of the torsion spring are respectively connected to the hinge plate and the first connecting end. The combined design of the mounting groove and the torsion spring on the first connecting end provides additional assistance and stability for the operation of the gripper.

[0012] Preferably, the claw body includes a first claw bar, and the first claw bar is provided with a second claw bar whose length is adjustable. The end of the second claw bar away from the moving block is provided with a clamping end. The adjustable length of the second claw bar can meet the disassembly requirements of centrifugal pump parts of different sizes. Whether it is a large bearing seat of a large industrial centrifugal pump or a compact coupling of a small centrifugal pump, precise gripping can be achieved by adjusting the length of the second claw bar.

[0013] Preferably, the first claw bar is provided with a second connecting end, and the hinge plate is rotatably connected to the second connecting end on the first claw bar. The second connecting end is provided with a second mounting groove, and a second torsion spring is provided in the second mounting groove. The two ends of the second torsion spring are respectively connected to the hinge plate and the second connecting end. The second torsion spring provides additional elastic force for the connection between the hinge plate and the first claw bar, enhancing the stability and adaptability of the claw body when gripping parts.

[0014] Preferably, both ends of the hinge plate are rotatably connected to end one and end two respectively by connecting pins.

[0015] Preferably, the first claw bar is provided with a movable hole, and the side of the second claw bar away from the clamping end is located in the movable hole. The movable hole provides precise guidance for the movement of the second claw bar, ensuring that the second claw bar maintains linear movement during the length adjustment process, avoiding deviation or shaking, thereby ensuring the accuracy and stability of the clamping end after the position is adjusted.

[0016] Preferably, the first claw bar is provided with a connecting hole, and a bolt that is threaded into the connecting hole is provided therein. The second claw bar is provided with multiple through holes at equal intervals. The bolt passes through one of the through holes. The lengths of the first and second claw bars are fixed by the cooperation of the bolt and the through holes. The multiple through holes provide more options for adjusting the length of the second claw bar.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] This utility model, with its adjustable claw length, can adapt to centrifugal pump bearings, bearing housings, couplings, and other parts of different sizes, greatly improving the versatility of the tool, reducing the trouble for maintenance personnel to prepare multiple tools for different sized parts, and lowering maintenance costs.

[0019] The gripper is rotatably connected to the moving block via a hinge plate, and torsion springs are installed at both ends of the hinge plate. This allows the gripper to automatically adjust its posture according to the shape and position of the part, facilitating gripping from different angles. Simultaneously, the elasticity provided by the torsion springs enhances the gripping force and stability of the gripper, making operation easier and smoother. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the embodiments 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.

[0021] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0022] Figure 2 This is a separate view of the moving block and gripper of this utility model;

[0023] Figure 3 This is an exploded view of the gripper structure of this utility model;

[0024] Figure 4 This is an exploded view of the claw structure of this utility model.

[0025] Drawing number explanation: 1. Screw; 2. Moving block; 21. Connecting end one; 211. Mounting slot one; 3. Clamping claw; 31. Hinge plate; 32. Torsion spring one; 33. Claw body; 331. Claw rod one; 3311. Connecting end two; 3312. Mounting slot two; 3313. Moving hole; 3314. Connecting hole; 332. Claw rod two; 3321. Clamping end; 3322. Through hole; 34. Torsion spring two; 35. Connecting pin; 36. Bolt. Detailed Implementation

[0026] The present invention will now be described in further detail with reference to the accompanying drawings.

[0027] The following description is intended to disclose the present invention so that those skilled in the art can implement it. The preferred embodiments described below are merely examples, and other obvious modifications will be apparent to those skilled in the art. The basic principles of the present invention defined in the following description can be used in other embodiments, modifications, improvements, equivalents, and other technical solutions that do not depart from the spirit and scope of the present invention.

[0028] Those skilled in the art should understand that in the disclosure of this utility model, the terms "longitudinal", "lateral", "up", "down", "left", "right", "front", "rear", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or position based on the orientation or positional relationship shown in the accompanying drawings. They are only for the purpose of simplifying the description of this utility model and do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the above terms should not be construed as limitations on this utility model.

[0029] It is understood that the term "a" should be understood as "at least one" or "one or more", that is, in one embodiment, the number of an element can be one, while in another embodiment, the number of the element can be multiple, and the term "a" should not be understood as a limitation on the number.

[0030] Example:

[0031] Please see Figure 1-4 A centrifugal pump disassembly and assembly tool includes a screw 1, a movable block 2 that is threadedly engaged with the screw 1, and a plurality of grippers 3 for gripping parts on the movable block 2. The grippers 3 include claw bodies 33 that can be adjusted in length.

[0032] The movable block 2 is provided with multiple connection ends 21 connected to the gripper 3. The multiple gripper 3 are rotatably connected to the multiple connection ends 21 respectively. The multiple gripper 3 can rotate independently, and the position of each gripper can be flexibly adjusted to achieve a more uniform force distribution, further improving the stability and reliability of the disassembly process.

[0033] The gripper 3 also includes a hinge plate 31. One end of the hinge plate 31 is rotatably connected to the connecting end 21 on the moving block 2, and the other end of the hinge plate 31 is rotatably connected to the gripper body 33. The setting of the hinge plate 31 further optimizes the structure and function of the gripper 3. Through the rotatable connection at both ends, the hinge plate 31 plays a flexible transmission and adjustment role.

[0034] The connecting end 21 is provided with a mounting slot 211, and a torsion spring 32 is provided in the mounting slot 211. The two ends of the torsion spring 32 are respectively connected to the hinge plate 31 and the connecting end 21. The combined design of the mounting slot 211 and the torsion spring 32 on the connecting end 21 provides additional assistance and stability for the operation of the gripper 3.

[0035] The claw body 33 includes a first claw bar 331, on which a second claw bar 332 with adjustable length is provided. The end of the second claw bar 332 away from the moving block 2 is provided with a clamping end 3321. The adjustable length of the second claw bar 332 can meet the disassembly requirements of centrifugal pump parts of different sizes. Whether it is the large bearing housing of a large industrial centrifugal pump or the compact coupling of a small centrifugal pump, precise gripping can be achieved by adjusting the length of the second claw bar 332.

[0036] The claw bar 331 is provided with a connecting end 3311. The hinge plate 31 is rotatably connected to the connecting end 3311 on the claw bar 331. The connecting end 3311 is provided with a mounting groove 3312. The mounting groove 3312 is provided with a torsion spring 34. The two ends of the torsion spring 34 are respectively connected to the hinge plate 31 and the connecting end 3311. The torsion spring 34 provides additional elastic force for the connection between the hinge plate 31 and the claw bar 331, enhancing the stability and adaptability of the claw body 33 when gripping parts.

[0037] Both ends of the hinge plate 31 are rotatably connected to end 21 and end 3311 respectively by connecting pins 35.

[0038] The first claw 331 is provided with a moving hole 3313. The side of the second claw 332 away from the clamping end 3321 is located in the moving hole 3313. The moving hole 3313 provides precise guidance for the movement of the second claw 332, ensuring that the second claw 332 maintains linear movement during the length adjustment process, avoiding deviation or shaking, thereby ensuring the accuracy and stability of the clamping end 3321 after the position is adjusted.

[0039] The first claw 331 is provided with a connecting hole 3314, and a bolt 36 is provided in the connecting hole 3314 for threaded engagement. The second claw 332 is provided with multiple through holes 3322 at equal intervals. The bolt 36 passes through one of the through holes 3322. The lengths of the first claw 331 and the second claw 332 are fixed by the engagement of the bolt 36 and the through hole 3322. The multiple through holes 3322 provide more options for adjusting the length of the second claw 332.

[0040] When removing the bearings, bearing housings, and couplings from a centrifugal pump, the end of screw 1 is pressed against the end of the centrifugal pump's rotating shaft. Claws 331 and 332 can be opened via a rotatable connection with the hinge plate 31, thus widening the spacing. Multiple claws 33 are adjusted according to the size of the parts, ensuring the clamping end 3321 on claw 332 is inside the part to be removed. One hand holds the claw 33 to limit its position, while the other hand rotates screw 1. Moving block 2 moves linearly through its threaded connection with screw 1, causing it to move outwards. As moving block 2 moves, the hinge plate 31 pulls claw 331, which in turn pulls claw 332, allowing claw 332 to pull the gripped part outwards. This facilitates the user's quick removal of the bearings, bearing housings, and couplings from the centrifugal pump.

[0041] After the bolt 36 is rotated and removed from the through hole 3322, its claw bar 332 can move in the moving hole 3313, thereby adjusting the extension length of the claw bar 332. The extension length of the claw bar 332 is adjusted according to the size of the part to be disassembled, thereby expanding the application range of the puller. After adjusting the length of the claw bar 332, one of the through holes 3322 corresponds to the bolt 36. Then, the bolt 36 is rotated and inserted into the through hole 3322, fixing the claw bar 332 and the claw bar 331 together.

[0042] Those skilled in the art should understand that the embodiments of the present invention described above and shown in the accompanying drawings are merely examples and do not limit the present invention. The purpose of the present invention has been fully and effectively achieved. The functions and structural principles of the present invention have been shown and explained in the embodiments. Without departing from the stated principles, the implementation of the present invention may have any variations or modifications.

Claims

1. A centrifugal pump disassembly and assembly tool, characterized in that, The device includes a screw (1), on which a movable block (2) is provided for threaded engagement. The movable block (2) is provided with multiple gripper parts (3) for gripping parts. Each gripper part (3) includes a claw body (33) capable of length adjustment. The movable block (2) is provided with multiple connecting ends (21) connected to the gripper parts (3). The multiple gripper parts (3) are rotatably connected to the multiple connecting ends (21). Each gripper part (3) also includes a hinge plate (31), one end of which is connected to the connecting end (21) on the movable block (2). 21) Rotary connection, the other end of the hinge plate (31) is rotatably connected to the claw body (33); the first connection end (21) is provided with a first placement groove (211), the first placement groove (211) is provided with a first torsion spring (32), the two ends of the first torsion spring (32) are respectively connected to the hinge plate (31) and the first connection end (21); the claw body (33) includes a first claw bar (331), the first claw bar (331) is provided with a second claw bar (332) that can be adjusted in length, and the second claw bar (332) is provided with a clamping end (3321) at the end away from the moving block (2).

2. The centrifugal pump disassembly and assembly tool according to claim 1, characterized in that: The claw rod (331) is provided with a connecting end (3311). The hinge plate (31) is rotatably connected to the connecting end (3311) on the claw rod (331). The connecting end (3311) is provided with a mounting groove (3312). The mounting groove (3312) is provided with a torsion spring (34). The two ends of the torsion spring (34) are respectively connected to the hinge plate (31) and the connecting end (3311).

3. A centrifugal pump disassembly and assembly tool according to claim 2, characterized in that: Both ends of the hinge plate (31) are rotatably connected to end one (21) and end two (3311) respectively by connecting pins (35).

4. A centrifugal pump disassembly and assembly tool according to claim 3, characterized in that: The first claw (331) is provided with a movable hole (3313), and the side of the second claw (332) away from the clamping end (3321) is located in the movable hole (3313).

5. A centrifugal pump disassembly and assembly tool according to claim 4, characterized in that: The first claw (331) is provided with a connecting hole (3314), and a bolt (36) is provided in the connecting hole (3314) for threaded engagement. The second claw (332) is provided with multiple through holes (3322) at equal intervals, and the bolt (36) passes through one of the through holes (3322).

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