Impeller dismounting tool

Abstract

The utility model relates to the technical field of impeller dismounting, in particular to an impeller dismounting tool which comprises a base, a top plate, at least two vertical rods and a telescopic device, the bottom end of each vertical rod is vertically installed on the base, the top plate is installed at the top end of each vertical rod, and a body of the telescopic device is installed on the bottom face of the top plate. The telescopic end of the telescopic device is used for abutting against the impeller so as to disassemble the impeller installed on the shaft or the telescopic end of the telescopic device is installed on the bottom face of the top plate, and the body of the telescopic device abuts against the impeller so as to disassemble the impeller installed on the shaft. The impeller and the shaft on the long shaft can be rapidly separated, the impeller and the shaft on the shaft can be rapidly separated, and in the process, the moving space of the impeller coincides with the space occupied by the shaft, so that the impeller does not occupy more space to be disassembled.

Description

Technical Field

[0001] The utility model relates to the technical field of parts disassembly devices, and more specifically, to an impeller disassembly tool. Background Art

[0002] Long-shaft double-suction centrifugal pumps have the advantages of high head, large flow rate, and small axial force. In offshore oil and natural gas exploitation, they are widely used in oil and gas and chemical production processes to provide circulating water, fire water, and decarbonized MEDA medium circulation for platform production processes, and play an important role in oil and gas production processes. In a carbon dioxide decarbonization system in a certain factory, the decarbonized MEDA semi-lean liquid circulation pump uses a long-shaft double-suction centrifugal pump. The shaft 2 is about 2.5 meters long, and the impeller 6 is installed on a step of about 1.8 meters from the end face of the long shaft 2. The overhaul cycle of this type of pump is 5 years. The impeller needs to be disassembled and disassembled every time the pump is planned for overhaul. During the overhaul, it cannot be quickly disassembled to complete the maintenance. If the standby pump stops unexpectedly, it will not be able to continuously provide the decarbonized MEDA medium required for production, which will directly lead to the decarbonization effect of natural gas and affect the downstream gas supply. The pump shaft and impeller of the existing semi-lean liquid pump rotor are interference fit, and because the impeller installation position is far away from the shaft end, the traditional puller cannot meet the disassembly requirements. Maintenance personnel need to heat and knock the impeller to disassemble it in the traditional way. The disassembly process takes a lot of manpower and time, and often causes damage such as strain on the shaft diameter and hole matching surface and deformation of the impeller, which affects the dynamic and static balance accuracy of the impeller and makes it difficult to ensure the quality and efficiency of the installation. In addition, during the disassembly and installation process, the protection of spare parts cannot be guaranteed, and parts such as shafts and impellers are prone to tipping over and injuring people. Similarly, when installing the impeller, due to the existence of interference fit, and because there is no constant temperature heating furnace available on site to heat the impeller for installation, and it is difficult to control the heating temperature with oxygen acetylene heating, it is easy to cause changes in the impeller structure and generate stress, etc., affecting the performance. And due to the existence of the impeller's own weight, it is difficult to ensure that the shaft and impeller are concentric, so vertical assembly is adopted.

[0003] There is a Chinese invention with publication number CN117140047A, which discloses a tool for disassembling impellers of a stirrer, including a chassis, a chuck, a telescopic device and at least two connecting rods, the chuck having a first through hole, the first through hole can be penetrated on the rotating shaft, and the side of the chuck away from the motor of the stirrer abuts against the end of the sleeve of the impeller to be disassembled on the stirrer close to the motor of the stirrer, the chassis and the chuck are parallel and relatively arranged, one end of each connecting rod is connected to the chassis and the other end of each connecting rod is connected to the chuck, the telescopic device includes a first end and a second end, the first end can be moved relative to the second end, the first end is fixed to one side of the chassis and the second end abuts against the end of the rotating shaft of the stirrer away from the motor of the stirrer, and the outer diameter of the second end is smaller than the inner diameter of the sleeve of the impeller. The telescopic device drives the impeller to be disassembled away from the rotating shaft of the stirrer, making the disassembly of the impeller simpler and more convenient, and no traditional hammering is required, which reduces the damage to the impeller or the rotating shaft caused by hammering.

[0004] In the above technical solution, the telescopic device separates the shaft from the impeller by applying pressure to the shaft on which the impeller is installed. In this process, the shaft needs to be displaced considerably, and since the axial length of the shaft is large, the movement of the shaft requires a large space, which limits the use scenario. Utility Model Content

[0005] In order to solve the above problems, the utility model provides an impeller disassembly tool, which can quickly separate the impeller on the shaft from the shaft. Pressure is applied to the impeller through a telescopic device to cause relative movement between the impeller and the shaft to achieve disassembly. In this process, the moving space of the impeller coincides with the space occupied by the shaft, so that it will not occupy more space for disassembly.

[0006] In order to solve the above technical problems, the technical solution adopted by the utility model is: an impeller disassembly tool, comprising a base, a top plate, a vertical pole and a telescopic device, wherein at least two vertical poles are provided, the bottom end of each vertical pole is vertically installed on the base, the top plate is installed on the top end of each vertical pole, the body of the telescopic device is installed on the bottom surface of the top plate, the telescopic end of the telescopic device is used to abut against the impeller to disassemble the impeller installed on the shaft or the telescopic end of the telescopic device is installed on the bottom surface of the top plate, and the body of the telescopic device abuts against the impeller to disassemble the impeller installed on the shaft.

[0007] In the present technical scheme, the impeller is connected to the shaft by an interference fit. The shaft is composed of multiple sections with different diameters. If the shaft and impeller are to be disassembled and separated, force needs to be applied to the shaft or the impeller so that the impeller moves to a smaller diameter portion on the shaft. The base, the top plate and the vertical rod form the frame of the impeller removal tool. The top plate is arranged directly above the base, and the two ends of the vertical rod are respectively connected to the base and the top plate, so as to determine the relative position between the base and the top plate. When the impeller needs to be disassembled, the shaft with the impeller is placed between the base and the top plate. Among them, the end of the shaft with a reduced radius faces the direction of the base. A telescopic device is arranged on the lower surface of the top plate, and the bottom end of the telescopic device can abut against the impeller. When the shaft with the impeller is placed firmly, the telescopic device is started, and the telescopic device drives the impeller abutting therewith to move toward the base, while the shaft is placed on the base, and in this process, it conflicts with the base, so that the shaft remains in its original position and cannot move. As a result, the shaft and the impeller move relative to each other, and the interference fit between the shaft and the impeller is destroyed, resulting in looseness. Finally, the impeller moves to the part of the shaft with a smaller diameter, the interference fit between the shaft and the impeller disappears, and the impeller can be freely removed from the shaft, thereby realizing the disassembly of the impeller. At the same time, the telescopic device can also realize the assembly of the impeller and the shaft. The specific method is: place the shaft between the base and the top plate, wherein the end of the shaft with a larger diameter faces the direction of the base. Put the impeller on the shaft from the end of the shaft with a smaller diameter, so that the impeller abuts against the bottom end of the telescopic device. After the shaft is placed firmly, start the telescopic device, and the telescopic device drives the impeller to move toward the base. In this process, the impeller moves from the part of the shaft with a smaller diameter to the part of the shaft with a larger diameter, and finally the interference fit between the impeller and the shaft is realized, completing the assembly of the shaft and the impeller.

[0008] Preferably, the telescopic device is a telescopic rod, and a plurality of the telescopic rods are provided, and the plurality of telescopic rods are evenly arranged on the bottom surface of the top plate along the circumferential direction.

[0009] Preferably, a placement hole for the shaft to pass through is opened in the center of the top plate.

[0010] Preferably, a plurality of penetrating mounting holes are arranged around the top plate, the vertical poles are installed in the mounting holes, the outer peripheral surface of the upper end of the vertical poles is provided with threads, the upper end of the vertical poles is threadedly connected with a plurality of nuts, and each of the nuts is located on the upper and lower surfaces of the top plate to clamp the top plate.

[0011] Preferably, a threaded sleeve is provided on the upper surface of the base, a thread is provided on the outer peripheral surface of the lower end of the vertical pole, and the threaded sleeve is threadedly connected to the lower end of the vertical pole.

[0012] Preferably, the impeller disassembly tool further comprises a straightening assembly for straightening the shaft, wherein the straightening assembly is mounted on the vertical pole and is located between the base and the telescopic device in the vertical direction.

[0013] Preferably, the straightening assembly includes two supporting members, one end of each of the supporting members is connected to the vertical rod, and the other end of each of the supporting members is detachably connected and forms a clamping space for clamping the shaft.

[0014] Preferably, a semicircular ring is provided at one end of the supporting member away from the vertical pole, and the two semicircular rings form the clamping space. Connecting blocks are provided at both ends of the semicircular rings respectively, and connecting holes are provided on the connecting blocks, and the connecting holes in the connecting blocks on one semicircular ring are connected to the connecting holes in the connecting blocks on the other semicircular ring with fastening bolts.

[0015] Preferably, the straightening assembly further comprises a clamping plate, and a second semicircular member is provided at one end of the supporting member connected to the vertical pole, the second semicircular member is provided with a second connecting hole, and the second connecting hole is connected to the clamping plate bolt.

[0016] Preferably, a bent portion is provided in the middle of the clamping plate, and third connecting holes are provided at both ends of the clamping plate, and the third connecting holes are bolted to the second connecting holes.

[0017] Compared with the prior art, the beneficial effects of the utility model are as follows: in the utility model, the impeller and the shaft are disassembled by driving the impeller to move through a telescopic device, which saves the space required for the disassembly operation. The disassembly tool can not only realize the disassembly between the impeller and the shaft, but also realize the assembly between the impeller and the shaft, expanding the function of the impeller disassembly tool. The top plate and the vertical rod are slidably connected, the vertical rod is a threaded surface, and a nut is provided on the vertical rod. The position of the top plate can be adjusted by adjusting the nut to adapt to shafts of different lengths, so that the impeller disassembly tool has stronger versatility. A straightening assembly for supporting the shaft is provided on the vertical rod, which ensures that the shaft can be stable and not offset during the disassembly process. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a three-dimensional diagram of the impeller disassembly tool of the utility model;

[0019] Figure 2 It is a top view of the top plate of the impeller removal tool of the utility model;

[0020] Figure 3 It is a three-dimensional diagram of the supporting member of the impeller disassembly tool of the utility model;

[0021] Figure 4 It is a stereoscopic view of a clamping plate of the impeller disassembly tool of the utility model.

[0022] In the attached drawings: 1. base; 2. top plate; 3. vertical pole; 4. telescopic device; 5. straightening assembly; 6. impeller; 7. shaft; 11. threaded sleeve; 21. placement hole; 22. mounting hole; 31. nut; 51. support member; 52. splint; 511. semicircular ring; 512. connecting block; 513. connecting hole; 514. second semicircular member; 515. second connecting hole; 521. third connecting hole. DETAILED DESCRIPTION

[0023] The drawings are only for illustrative purposes and cannot be construed as limiting the present invention. To better illustrate the present embodiment, some parts of the drawings may be omitted, enlarged, or reduced, and do not represent the size of the actual product. For those skilled in the art, it is understandable that some well-known structures and their descriptions may be omitted in the drawings. The positional relationships described in the drawings are only for illustrative purposes and cannot be construed as limiting the present invention.

[0024] The same or similar numbers in the drawings of the embodiments of the present invention correspond to the same or similar parts; in the description of the present invention, it should be understood that if the terms "upper", "lower", "left", "right", "long", "short" and the like indicate directions or positional relationships based on the directions or positional relationships shown in the drawings, they are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, the terms describing the positional relationship in the drawings are only used for illustrative purposes and cannot be understood as limitations on this patent. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0025] The technical solution of the present invention is further described in detail below through specific embodiments and in conjunction with the accompanying drawings:

[0026] Example 1

[0027] like Figure 1As shown, an impeller removal tool comprises a base 1, a top plate 2, a vertical rod 3 and a telescopic device 4, wherein at least two vertical rods 3 are provided, the bottom end of each vertical rod 3 is vertically mounted on the base 1, the top plate 2 is mounted on the top of each vertical rod 3, the body of the telescopic device 4 is mounted on the bottom surface of the top plate 2, the telescopic end of the telescopic device 4 is used to abut against the impeller 6 to remove the impeller 6 installed on the shaft or the telescopic end of the telescopic device 4 is mounted on the bottom surface of the top plate 2, and the body of the telescopic device 4 abuts against the impeller 6 to remove the impeller 6 installed on the shaft. The impeller 6 is connected to the shaft 7 by interference fit. The shaft 7 is composed of multiple sections of different diameters. If the shaft 7 and the impeller 6 are to be disassembled and separated, a force needs to be applied to the impeller 6 so that the impeller 6 moves to a portion of the shaft 7 with a smaller diameter. The base 1, the top plate 2 and the vertical rod 3 form the frame of the impeller removal tool, the top plate 2 is arranged directly above the base 1, and the two ends of the vertical rod 3 are respectively connected to the base 1 and the top plate 2 to determine the relative position between the base 1 and the top plate 2. When the impeller 6 needs to be removed, the shaft 7 with the impeller 6 is placed between the base 1 and the top plate 2. The end of the shaft 7 with a reduced radius faces the base 1. The lower surface of the top plate 2 is provided with a telescopic device 4, and the bottom end of the telescopic device 4 can abut against the impeller 6. When the shaft 7 with the impeller 6 is placed firmly, the telescopic device 4 is started, and the telescopic device 4 drives the impeller 6 abutting therewith to move toward the base 1, and the shaft 7 is placed on the base 1, and in this process, it conflicts with the base 1, so that the shaft 7 remains in the original position and cannot move. As a result, the shaft 7 and the impeller 6 move relative to each other, and the interference fit between the shaft 7 and the impeller 6 is destroyed, resulting in looseness. Finally, the impeller 6 moves to a portion with a smaller diameter of the shaft 7, and the interference fit between the shaft 6 and the impeller 7 disappears, and the impeller 6 can be freely taken out of the shaft 7, thereby realizing the disassembly of the impeller 6. At the same time, the telescopic device 4 can also realize the assembly of the impeller 6 and the shaft 7. The specific method is as follows: the shaft 7 is placed between the base 1 and the top plate 2, with the end of the shaft 7 with a larger diameter facing the base 1. The impeller 6 is put on the shaft 7 from the end of the shaft 7 with a smaller diameter, so that the impeller 6 abuts against the bottom end of the telescopic device 4. After the shaft 7 is placed firmly, the telescopic device 4 is started, and the telescopic device 4 drives the impeller 6 to move toward the base 1. In this process, the impeller 6 moves from the part with a smaller diameter of the shaft 7 to the part with a larger diameter of the shaft 7, and finally an interference fit between the impeller 6 and the shaft 7 is achieved, and the assembly of the shaft 7 and the impeller 6 is completed.

[0028] like Figure 1As shown, the telescopic device 4 is a telescopic rod, and multiple telescopic rods are provided, and multiple telescopic rods are evenly arranged on the bottom surface of the top plate 2 along the circumferential direction. When not working, the telescopic rod is in a retracted state. When working, the lower end of the telescopic rod 4 contacts the upper surface of the impeller 6. At this time, the length of the telescopic rod is equal to the distance between the impeller 6 and the top plate 2. The telescopic rod begins to stretch, and the length of the telescopic rod becomes longer, so that the distance between the top plate 2 and the impeller 6 becomes larger. Since the top plate 2 is fixed by the vertical rod 3 and cannot move, the extended part of the telescopic rod will be used to push the impeller 6 to move on the shaft 7, and finally the impeller 6 is disassembled to the part with a smaller diameter of the shaft 7. Since the center position of the impeller 6 is connected to the shaft 7, the position where the telescopic rod abuts the impeller 6 can only be set at a position deviating from the center of the impeller. If there is only a single telescopic rod, in addition to applying a downward force to the impeller 6, a torque will be applied to the impeller 6 to tilt the impeller 6, causing the force direction of the telescopic rod 6 to deviate, affecting the disassembly effect, and there is a risk of damaging the impeller 6 and the shaft 7. Therefore, multiple telescopic rods are provided, evenly arranged on the bottom surface of the top plate 2, to ensure that each telescopic rod can offset the torque applied by other telescopic rods on the impeller 6, so that the direction of the force applied by the telescopic rods on the impeller 6 is only along the length direction of the shaft 7.

[0029] like Figure 2 As shown, a placement hole 21 for placing the shaft is provided in the center of the top plate 2. The distance that the telescopic device 4 can push the impeller 6 to move is certain, but the length of the shaft 7 is uncertain. Therefore, the top plate 2 needs to ensure that the distance from the impeller 6 is equal to the length of the telescopic device 4, while leaving space for placing the overlong portion of the shaft 7. A placement hole 22 is provided in the center of the top plate 2, and the overlong portion of the shaft 7 can be inserted into the placement hole 22.

[0030] like Figure 1 , Figure 2As shown, the top plate 2 is provided with a plurality of through-holes 22 around it, the vertical rod 3 is installed in the mounting holes 22, the outer peripheral surface of the upper end of the vertical rod 3 is provided with threads, and the upper end of the vertical rod 3 is threadedly connected with a plurality of nuts 31, and each nut 31 is located on the upper and lower surfaces of the top plate 2 to clamp the top plate 2. Since the size of the shaft 7 is uncertain, the distance between the impeller 6 installed on the shaft 7 and the base 1 is also uncertain. Therefore, in order to adapt to shafts 7 of different lengths, the position of the top plate 2 from the base 1 also needs to be adjustable. The mounting hole 22 is slidably connected to the vertical rod 3, so that the top plate 2 can move in the length direction of the vertical rod 3 to adapt to shafts 7 of different lengths. The size of the mounting hole 22 is smaller than the nut 31, so the nut 31 cannot enter the mounting hole 22. The nut 31 located below the mounting hole 22 supports the top plate 2, so that the top plate 2 slidably connected to the vertical rod 3 can be fixed at a preset position and will not move downward. After the position of the top plate 2 is adjusted into place, a nut 31 is screwed into the top of the top plate 2 so that the upper and lower ends of the mounting hole 22 are clamped by the nut 31. When the telescopic device 4 is working, the force applied by the telescopic device 4 to the impeller 6 will react on the top plate 2, pushing the top plate 2 to have a tendency to move upward, and the nut 31 located at the top of the mounting hole 22 has a blocking effect on the top plate 2, which can prevent the top plate 2 from moving upward. When the telescopic device 4 is working, the telescopic device 4 pushes the top plate 2, and the top plate 2 conflicts with the nut located at the upper end of the mounting hole 22, applying a vertical force to the nut 22. Since the movement of the nut 31 on the vertical pole 3 is achieved by rotation, directly applying a vertical force to the nut 22 cannot push the nut 31 to move, resulting in the top plate 2 being restricted below the nut 31, thereby ensuring that the telescopic device 4 can work normally.

[0031] Example 2

[0032] This embodiment is similar to the above-mentioned embodiment 1, except that: Figure 1 As shown, a threaded sleeve 11 is provided on the upper surface of the base 1, and a thread is provided on the outer peripheral surface of the lower end of the vertical rod 3, and the threaded sleeve 11 is threadedly connected with the lower end of the vertical rod 3. The base 1 is threadedly connected with the vertical rod 3 through the threaded sleeve 11, and the vertical rod 3 is easy to disassemble, so that the vertical rod 3 is easy to replace and the impeller telescopic device is easy to store by disassembly.

[0033] Example 3

[0034] This embodiment is similar to the above-mentioned embodiment 1, except that: Figure 1As shown, the impeller disassembly tool also includes a straightening assembly 5 for straightening the shaft 7, and the straightening assembly 5 is installed on the vertical pole 3, and the straightening assembly 5 is located between the base 1 and the telescopic device 4 in the vertical direction. During the disassembly of the impeller 6, it is necessary to ensure that the length direction of the shaft 7 is parallel to the length direction of the disassembly assembly 4, so as to ensure that the telescopic device 4 can drive the impeller 6 to move along the length direction of the shaft 7. If the shaft 7 is tilted, this will cause the direction of the force applied by the disassembly assembly 4 to the impeller 6 to deviate and point to the shaft 7, which may cause damage to the structure of the impeller 6 and the shaft 7. Therefore, it is necessary to ensure that the shaft 7 will not tilt during the disassembly process. The straightening assembly 5 is installed on the vertical pole 3, and the straightening assembly 5 has a supporting effect on the shaft 7. The straightening assembly 5 is located between the base 2 and the telescopic device 4, and will not affect the operation of the telescopic device 4.

[0035] like Figure 1 As shown, the straightening assembly 5 includes two supporting members 51, one end of each supporting member 51 is connected to the vertical pole 3, and the other end of each supporting member 51 is detachably connected and forms a clamping space for clamping the shaft 7. The length of the supporting member 51 is fixed, one end of the supporting member 51 is connected to the vertical pole 3, and the other end is connected to the shaft 7, so that the distance between the vertical pole 3 and the shaft 7 is fixed. A clamping space for clamping the shaft 7 is formed between the two supporting members. The clamping space is closed, so that the shaft 7 can only exist in the space. When the shaft 7 needs to be taken out, the supporting member 51 is disassembled to open the clamping space, and the shaft 7 can be taken out.

[0036] like Figure 3 As shown, a semicircular ring 511 is provided at one end of the support member 51 away from the upright pole 3, and a clamping space is formed by two semicircular rings 511. Connecting blocks 512 are provided at both ends of the semicircular rings 511, and connecting holes 513 are provided on the connecting blocks 512. The connecting holes 513 in the connecting blocks 512 on one semicircular ring 511 and the connecting holes 513 in the connecting blocks 512 on the other semicircular ring 511 are connected with fastening bolts. The semicircular rings 511 of the two support members 51 can be connected to form a full circular ring, and the diameter of the circular ring is the same as that of the supported part of the shaft 7, so that there is no gap between the support member 51 and the shaft 7 for the shaft 7 to tilt. Connecting blocks 512 are provided at both ends of the semicircular rings 511, and connecting holes 513 for installing bolts are provided on the connecting blocks 512. The semicircular rings 511 of the two support members 51 can be fixed by installing bolts in the connecting holes 513 to prevent the two support members 51 from being separated from each other during the disassembly process, resulting in loss of the supporting effect. At the same time, the use of bolts for fixing is easy to disassemble, and it is convenient to disassemble the two connected supporting members 51 when taking out the shaft 7 so that the originally closed clamping space is opened.

[0037] like Figure 3As shown, the straightening assembly 5 also includes a clamping plate 52, and a second semicircular member 514 is provided at one end of the supporting member 51 connected to the vertical pole 3, and the second semicircular member 514 is provided with a second connecting hole 515, and the second connecting hole 515 is bolted to the clamping plate 52. The second semicircular member 515 has an arc, so that the second semicircular member 514 can better fit the outer peripheral surface of the vertical pole 3, and at the same time, the vertical pole 3 can be fixed in the second semicircular member 514 without sliding outward. The second semicircular member 514 is provided with a second connecting hole 515 at both ends, and the second connecting hole 515 is bolted to the clamping plate 52. When the bolts are tightened, the second semicircular member 514 and the clamping plate 52 clamp the vertical pole 3 together, so that the supporting member 52 cannot move on the vertical pole 3, thereby achieving the effect of fixing the position of the supporting member 51. When the position of the supporting member 52 on the vertical pole 3 needs to be adjusted, it is only necessary to loosen the bolts connecting the second connecting hole 515 and the clamping plate 52, and the clamping member 51 can move in the length direction of the vertical pole 3. When the clamping member 51 is moved to a desired position, the bolt is tightened to complete the adjustment of the position of the supporting member 51 .

[0038] like Figure 4 As shown, the middle of the clamping plate 52 is provided with a curved portion that is curved away from the vertical pole 3, and both ends of the clamping plate 52 are provided with third connection holes 521, which are bolted to the second connection holes 515. The curved portion is provided in the middle of the clamping plate 52, so that the clamping plate 52 fits the outer peripheral surface of the vertical pole 3 more closely, thereby increasing the contact area between the clamping plate 52 and the vertical pole 3.

[0039] Obviously, the above embodiments of the utility model are only examples for clearly explaining the utility model, and are not intended to limit the implementation methods of the utility model. For ordinary technicians in the relevant field, other different forms of changes or modifications can be made on the basis of the above description. It is not necessary and impossible to list all the implementation methods here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the utility model should be included in the protection scope of the claims of the utility model.

Claims

1. An impeller disassembly tool, characterized in that: The invention comprises a base (1), a top plate (2), a vertical rod (3) and a telescopic device (4), wherein at least two vertical rods (3) are provided, the bottom end of each vertical rod (3) is vertically mounted on the base (1), the top plate (2) is mounted on the top end of each vertical rod (3), the body of the telescopic device (4) is mounted on the bottom surface of the top plate (2), the telescopic end of the telescopic device (4) is used to abut against an impeller (6) to remove the impeller (6) mounted on the shaft, or the telescopic end of the telescopic device (4) is mounted on the bottom surface of the top plate (2), the body of the telescopic device (4) abuts against the impeller (6) to remove the impeller (6) mounted on the shaft.

2. An impeller disassembly tool according to claim 1, characterized in that: The telescopic device (4) is a telescopic rod, and a plurality of the telescopic rods are provided. The plurality of telescopic rods are evenly arranged on the bottom surface of the top plate (2) along the circumferential direction.

3. An impeller removal tool according to claim 1, characterized in that: A placement hole (21) for the shaft (7) to pass through is provided in the center of the top plate (2).

4. An impeller removal tool according to claim 3, characterized in that: The top plate (2) is provided with a plurality of through-going mounting holes (22) around its periphery, the vertical rod (3) is installed in the mounting holes (22), the outer peripheral surface of the upper end of the vertical rod (3) is provided with a thread, the upper end of the vertical rod (3) is threadedly connected with a plurality of nuts (31), and each nut (31) is located on the upper and lower surfaces of the top plate (2) to clamp the top plate (2).

5. The impeller disassembly tool according to claim 1, characterized in that: A threaded sleeve (11) is provided on the upper surface of the base (1), a thread is provided on the outer peripheral surface of the lower end of the vertical rod (3), and the threaded sleeve (11) is threadedly connected to the lower end of the vertical rod (3).

6. An impeller removal tool according to claim 1, characterized in that: The impeller disassembly tool also includes a straightening assembly (5) for straightening the shaft (7), wherein the straightening assembly (5) is mounted on the vertical rod (3), and the straightening assembly (5) is located between the base (1) and the telescopic device (4) in the vertical direction.

7. An impeller removal tool according to claim 6, characterized in that: The straightening assembly (5) comprises two supporting members (51), one end of each supporting member (51) is connected to the vertical rod (3), and the other end of each supporting member (51) is detachably connected and forms a clamping space for clamping the shaft (7).

8. An impeller removal tool according to claim 7, characterized in that: A semicircular ring (511) is provided at one end of the supporting member (51) away from the vertical pole (3), and the two semicircular rings (511) form the clamping space. Connecting blocks (512) are provided at both ends of the semicircular rings (511), and connecting holes (513) are provided on the connecting blocks (512). The connecting holes (513) in the connecting blocks (512) on one semicircular ring (511) and the connecting holes (513) in the connecting blocks (512) on the other semicircular ring (511) are connected with fastening bolts.

9. An impeller removal tool according to claim 7, characterized in that: The straightening assembly (5) further comprises a clamping plate (52), and one end of the supporting member (51) connected to the upright pole (3) is provided with a second semicircular member (514), and the second semicircular member (514) is provided with a second connecting hole (515), and the second connecting hole (515) is bolted to the clamping plate (52).

10. An impeller removal tool according to claim 9, characterized in that: A bent portion is provided in the middle of the clamping plate (52) and is bent in a direction away from the upright pole (3). Third connection holes (521) are provided at both ends of the clamping plate (52), and the third connection holes (521) are bolted to the second connection holes (515).

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