A vertical shaft flow pump impeller quick dismounting and mounting tool

Abstract

The utility model discloses a vertical axial flow pump impeller quick dismounting tool relates to axial flow pump technical field, aims at solving the current vertical axial flow pump impeller dismounting easy collision scratch damaged technical problem, including mobile mechanism and the hoisting mechanism of mobile mechanism upper setting, mobile seat bottom surface is provided with the connecting column, the hoisting mechanism includes first mounting disc, second mounting disc and the first winding machine and second winding machine of first mounting disc and second mounting disc bottom surface setting, be provided with connecting rod between first mounting disc and second mounting disc, the hoisting mechanism still includes positioning assembly, and the positioning assembly includes support column, limiting ring and the positioning rod and positioning plate of vertical axial flow pump impeller positioning, the utility model discloses have through positioning assembly accurate positioning, make impeller dismounting when can vertical lifting hoisting, prevent impeller swing collision scratch, cooperate mobile mechanism and quickly shift, and the efficient operation of dismounting is simple, and the advantage of guaranteeing the perfect part.

Description

Technical Field

[0001] This utility model relates to the field of axial flow pump technology, and more specifically, to a quick assembly and disassembly tool for a vertical axial flow pump impeller. Background Technology

[0002] A vertical axial flow pump is a fluid transport machine characterized by axial flow. It is named for its vertically mounted pump shaft and is widely used in water conservancy projects, industrial production, and municipal construction. Its core structure consists of an inlet bell, impeller, guide vanes, pump shaft, bearings, and motor. The impeller adopts a streamlined blade design, which generates axial thrust during rotation, propelling the fluid to flow efficiently along the pump shaft.

[0003] Large vertical axial flow pumps require disassembly and reassembly for maintenance and repair. Currently, the main method for disassembling and reassembling vertical axial flow pumps is to use hoisting equipment to vertically pull the impeller out of the casing. During this process, the wire rope is prone to swaying, causing the impeller to collide and scrape against the inner wall of the casing, guide vanes, and other components, resulting in chipped impeller blades and scratches on the inner wall of the pump casing. Therefore, we propose a quick disassembly and reassembly fixture for vertical axial flow pump impellers. Utility Model Content

[0004] The purpose of this utility model is to overcome the shortcomings of the existing technology, adapt to the needs of reality, and provide a quick disassembly and assembly tooling for vertical axial flow pump impellers to solve the technical problem that current vertical axial flow pump impellers are easily damaged by collisions and scratches during disassembly and assembly.

[0005] To solve the above-mentioned technical problems, this utility model provides the following technical solution: a quick disassembly and assembly tooling for a vertical axial flow pump impeller, including a moving mechanism and a hoisting mechanism provided on the moving mechanism; The moving mechanism includes a track beam and a movable seat slidably mounted on the track beam, and a connecting column is provided on the bottom surface of the movable seat; The hoisting mechanism includes a first mounting plate, a second mounting plate, and a first winch and a second winch installed on the bottom surfaces of the first and second mounting plates. The top surface of the first mounting plate is connected to a connecting column, and a connecting rod is provided between the first and second mounting plates. The hoisting mechanism also includes a positioning component, which includes a support column, a limiting ring, and a positioning rod and positioning plate for positioning the impeller of the vertical axial flow pump.

[0006] Preferably, the top surface of the track beam is symmetrically provided with a track groove, the bottom surface of the movable seat is symmetrically provided with a limit slider, the limit slider is slidably disposed in the track groove, the track beam is provided with an installation port, a lead screw is provided in the installation port, a motor for driving the lead screw is provided at the side end of the track beam, and the bottom surface of the movable seat protrudes into the installation port and is threadedly connected to the lead screw.

[0007] Preferably, the second winch is provided with a first wire rope, and the end of the first wire rope is provided with a connecting plate for connecting with the impeller hub.

[0008] Preferably, the first winch is provided with a plurality of second wire ropes, and the first mounting plate and the limiting ring are both provided with holes for the second wire ropes to pass through, and the positioning rod is provided at the end of the second wire rope.

[0009] Preferably, the positioning rod includes a first positioning part and a guide part along its long axis. The guide part is curved outward in an arc shape. A sliding groove is provided on the first positioning part. A sliding block is slidably installed in the sliding groove. The positioning plate is disposed on the front side of the sliding block.

[0010] Preferably, the positioning plate includes an installation part, a connecting part, a second positioning part, and a limiting part along its long axis. The connecting part is inclined, the second positioning part is curved into an arc shape that fits the outer surface of the impeller hub, and a plurality of the second positioning parts form a ring. The limiting part is located at the top of the second positioning part and is curved into an arc shape along its long axis.

[0011] Compared with the prior art, the beneficial effects of this utility model are: 1. This utility model, through the design of the positioning component structure, ensures that the guide part of the positioning rod contacts the pump body shell first to guide it when the positioning component descends. The first positioning part is close to the shell to complete the precise positioning of the shaft center. The second positioning part of the positioning plate is arc-shaped and forms a ring, which can closely fit the outer surface of the impeller hub. During the hoisting process, the impeller is always limited and constrained, effectively avoiding impeller swaying and ensuring its vertical lifting and lowering. This fundamentally eliminates the risk of collision and scratching, protects the integrity of the impeller blades and related pump body components, and makes the impeller disassembly and assembly process both stable and efficient. At the same time, it reduces the difficulty of operation and solves the technical problem that the impeller is prone to hard collision and scratching with the inner wall of the shell and the guide vane body due to the swaying of the wire rope during the disassembly and assembly of the existing vertical axial flow pump impeller, resulting in chipped impeller blades and scratches on the inner wall of the pump shell.

[0012] 2. This utility model also features a sliding adjustable positioning plate and positioning rod cooperating structure (the positioning rod has a sliding groove, and the positioning plate is installed in the sliding groove through a sliding block), as well as a segmented special structure of the positioning plate itself (including an inclined connecting part, an arc-shaped second positioning part, and a limiting part). The flexible movement of the sliding block in the sliding groove allows the positioning plate to adaptively adjust its position according to the impeller hub height. The inclined connecting part can adapt to the transition structure between the pump body and the hub. The arc-shaped second positioning part can fit against the outer surface of the impeller hub. The annular structure formed by several second positioning parts can stably wrap around the hub. The limiting part can also accurately limit the downward stroke of the positioning plate, quickly complete the positioning operation of the shaft center, and allow the impeller to be quickly disassembled and assembled, further improving maintenance efficiency. Attached Figure Description

[0013] Figure 1 This is a front view structural diagram of the present utility model; Figure 2 This is a schematic diagram of the hoisting mechanism and positioning components of this utility model; Figure 3 This is a schematic diagram of the hoisting mechanism structure of this utility model; Figure 4 This is a schematic diagram of the partial positioning component structure of this utility model; Figure 5 This is a schematic diagram of the partial positioning rod and positioning plate structure of this utility model; Figure 6 This is a schematic diagram of one usage state of the present invention.

[0014] The following are the labeling instructions in the diagram: 100, Moving mechanism; 101, Track beam; 102, Mounting port; 103, Track groove; 104, Motor; 105, Moving seat; 106, Connecting column; 200, Lifting mechanism; 201, First mounting plate; 202, Connecting rod; 203, Second mounting plate; 204, First winch; 205, Second winch; 206, First wire rope; 207, Connecting plate; 300, Positioning assembly; 301, Support column; 302, Limiting ring; 303, Positioning rod; 3031, First positioning part; 3032, Guide part; 3033, Sliding groove; 3034, Sliding block; 304, Positioning plate; 3041, Mounting part; 3042, Connecting part; 3043, Second positioning part; 3044, Limiting part. Detailed Implementation

[0015] like Figures 1 to 6 As shown, the present invention relates to a quick assembly and disassembly tooling for a vertical axial flow pump impeller, including a moving mechanism 100 and a hoisting mechanism 200 provided on the moving mechanism 100; The moving mechanism 100 includes a track beam 101 and a movable seat 105 slidably mounted on the track beam 101, with a connecting column 106 provided on the bottom surface of the movable seat 105. The hoisting mechanism 200 includes a first mounting plate 201, a second mounting plate 203, and a first winch 204 and a second winch 205 disposed on the bottom surfaces of the first mounting plate 201 and the second mounting plate 203. The top surface of the first mounting plate 201 is connected to the connecting column 106, and a connecting rod 202 is disposed between the first mounting plate 201 and the second mounting plate 203. The hoisting mechanism 200 also includes a positioning component 300, which includes a support column 301, a limiting ring 302, and a positioning rod 303 and a positioning plate 304 for positioning the vertical axial flow pump impeller. This invention uses the positioning component 300 for precise positioning, enabling the impeller to be vertically lifted and hoisted during assembly and disassembly, preventing impeller swaying, collision, and scratches. Combined with the moving mechanism 100, it allows for rapid relocation, resulting in efficient assembly and disassembly, simple operation, and ensures the integrity of components.

[0016] Specifically, the top surface of the track beam 101 is symmetrically provided with a track groove 103, and the bottom surface of the movable seat 105 is symmetrically provided with a limit slider, which is slidably disposed within the track groove 103. The track beam 101 is provided with an installation port 102, within which a lead screw is installed. A motor 104 for driving the lead screw is located at the side end of the track beam 101. The bottom surface of the movable seat 105 protrudes into the installation port 102 and is threadedly connected to the lead screw. The track groove 103 and the limit slider restrict the movement trajectory of the movable seat 105. Driven by the motor 104, the lead screw is activated, allowing the movable seat 105 to move along the track, thus moving the lifting mechanism 200 to the corresponding working area.

[0017] Furthermore, the second winch 205 is equipped with a first wire rope 206, and the end of the first wire rope 206 is equipped with a connecting plate 207 for connecting to the impeller hub. The connecting plate 207 is provided with bolts for connecting to the vertical axial flow pump impeller hub, which can be hoisted by the operation of the second winch 205.

[0018] It is worth noting that the first winch 204 is equipped with several second wire ropes. Both the first mounting plate 201 and the limiting ring 302 have holes for the second wire ropes to pass through, and the positioning rod 303 is located at the end of the second wire rope. The first mounting plate 201 and the limiting ring 302 can limit the second wire ropes, so that the several second wire ropes are distributed in a ring.

[0019] It is worth mentioning that the positioning rod 303 includes a first positioning part 3031 and a guide part 3032 along its long axis. The guide part 3032 is curved outward in an arc shape. A sliding groove 3033 is provided on the first positioning part 3031, and a sliding block 3034 is slidably installed in the sliding groove 3033. The positioning plate 304 is disposed on the front side of the sliding block 3034. When the positioning assembly 300 descends, the guide part 3032 first contacts the outer surface of the vertical axial flow pump housing. Guided by several guide parts 3032, as it continues to descend, the first positioning parts 3031 of several positioning rods 303 can be pressed against the outer surface of the vertical axial flow pump housing, thereby performing axial positioning, so that the second positioning parts 3043 of several positioning plates 304 can be pressed against the outer surface of the impeller hub.

[0020] It is worth noting that the positioning plate 304 includes a mounting part 3041, a connecting part 3042, a second positioning part 3043 and a limiting part 3044 along the long axis. The connecting part 3042 is inclined, the second positioning part 3043 is curved into an arc shape to fit the outer surface of the impeller hub, and several second positioning parts 3043 form a ring. The limiting part 3044 is located at the top of the second positioning part 3043 and is curved into an arc shape along the long axis. When the second positioning part 3043 of several positioning plates 304 is in contact with the outer surface of the impeller hub, the limiting part 3044 is set to restrict the positioning plate 304 from continuing to descend. Then, the hub can be connected by the connecting plate 207 for hoisting. During the hoisting process, the impeller rises and pulls the limiting part 3044 to raise the positioning plate 304. During the rising process, the positioning plate 304 moves along the sliding groove 3033 of the positioning rod 303 by the sliding block 3034, ensuring that the vertical axial flow pump impeller will not shake under the action of the second positioning part 3043, so that it can rise vertically and prevent the impeller from having a hard collision or scratch with the inner wall of the casing, the guide vane body and other components.

[0021] Working Principle: This embodiment provides a quick-assembly and disassembly fixture for a vertical axial flow pump impeller. In use, the motor 104 first drives the lead screw inside the mounting port 102 of the track beam 101 to rotate. Since the protruding part of the bottom surface of the movable seat 105 is threadedly connected to the lead screw, and the limiting slider on the bottom surface of the movable seat 105 is slidably positioned within the track groove 103 on the top surface of the track beam 101, the movable seat 105 slides stably along the track groove 103 under the action of the lead screw rotation. This, in turn, moves the hoisting mechanism 200, connected via the connecting column 106, to the corresponding working area directly above the vertical axial flow pump impeller. Then, the first winch 204 is operated to release the second wire rope, causing the positioning assembly 300 to descend as a whole. During the descent, the positioning rod... The guide part 3032 of 303 first contacts the outer surface of the vertical axial flow pump housing. Several guide parts 3032 that bend outward in an arc shape play a guiding role. As the positioning assembly 300 continues to descend, the first positioning part 3031 of the positioning rod 303 gradually presses against the outer surface of the vertical axial flow pump housing, achieving precise positioning of the shaft center. At this time, the second positioning part 3043 of several positioning plates 304 just fits against the outer surface of the impeller hub, while the limiting part 3044 of the positioning plate 304 contacts the top of the impeller hub, restricting the positioning assembly 300 from descending further. Then, the connecting plate 207 at the end of the first wire rope 206 on the second winch 205 is fixedly connected to the impeller hub with bolts. After the connection is completed, the second winch 205 is started. 5. The second winch 205 retracts the first wire rope 206. During the hoisting process, as the impeller rises, it drives the limiting part 3044, which in turn pulls the positioning plate 304 to rise synchronously. The positioning plate 304 slides stably along the sliding groove 3033 on the first positioning part 3031 of the positioning rod 303 via the sliding block 3034 on its back. At the same time, several second positioning parts 3043, arranged in a ring and fitting against the outer surface of the impeller hub, constantly limit the impeller, effectively preventing the impeller from shaking during the rise and ensuring that the impeller can maintain a stable vertical rise, avoiding hard collisions and scratches with the inner wall of the casing, guide vanes, and other components. After the impeller is completely pulled out of the casing, the first winch 204 operates to make the positioning assembly 300... The impeller is lifted, and the moving base 105 is moved again by the motor 104 to transfer the impeller to the designated maintenance position to complete the disassembly operation. When installing the impeller, the above operation is repeated in reverse. First, the impeller is transferred to the top of the pump body by the moving mechanism 100. The shaft is positioned by the guide part 3032 and the first positioning part 3031 of the positioning component 300 so that the impeller is accurately aligned with the installation position. Then, the impeller is slowly lowered by the second winch 205. The positioning plate 304 slowly descends along the sliding groove 3033 under the action of the impeller's gravity, always limiting and guiding the impeller to ensure that the impeller is installed smoothly in the preset position. Finally, the connection between the connecting plate 207 and the impeller hub is removed, the positioning component 300 is retrieved, and the entire installation process is completed.

[0022] The embodiments disclosed herein are preferred embodiments, but are not limited thereto. Those skilled in the art can readily grasp the spirit of this utility model based on the above embodiments and make different extensions and variations. However, as long as they do not depart from the spirit of this utility model, they are all within the protection scope of this utility model.

Claims

1. A vertical shaft flow pump impeller quick dismounting and mounting tool, characterized in that, Includes a mobile mechanism (100) and a hoisting mechanism (200) mounted on the mobile mechanism (100); The moving mechanism (100) includes a track beam (101) and a movable seat (105) slidably mounted on the track beam (101), and a connecting column (106) is provided on the bottom surface of the movable seat (105). The hoisting mechanism (200) includes a first mounting plate (201), a second mounting plate (203), and a first winch (204) and a second winch (205) disposed on the bottom surfaces of the first mounting plate (201) and the second mounting plate (203). The top surface of the first mounting plate (201) is connected to a connecting column (106), and a connecting rod (202) is disposed between the first mounting plate (201) and the second mounting plate (203). The hoisting mechanism (200) also includes a positioning component (300), which includes a support column (301), a limiting ring (302), a positioning rod (303) and a positioning plate (304) for positioning the vertical axial flow pump impeller.

2. The quick dismounting tool for the vertical axial flow pump impeller according to claim 1, characterized in that, The top surface of the track beam (101) is symmetrically provided with a track groove (103), and the bottom surface of the movable seat (105) is symmetrically provided with a limiting slider. The limiting slider is slidably disposed in the track groove (103). The track beam (101) is provided with an installation port (102), and a lead screw is provided in the installation port (102). The side end of the track beam (101) is provided with a motor (104) for driving the lead screw. The bottom surface of the movable seat (105) protrudes into the installation port (102) and is threadedly connected to the lead screw.

3. The quick dismounting tool for vertical axial flow pump impeller according to claim 2, characterized in that, The second winch (205) is provided with a first wire rope (206), and the end of the first wire rope (206) is provided with a connecting plate (207) for connecting with the impeller hub.

4. The quick dismounting tool for vertical axial flow pump impeller according to claim 3, characterized in that, The first winch (204) is provided with several second wire ropes. The first mounting plate (201) and the limiting ring (302) are both provided with holes for the second wire ropes to pass through. The positioning rod (303) is located at the end of the second wire rope.

5. The quick dismounting tool for vertical axial flow pump impeller according to claim 4, characterized in that, The positioning rod (303) includes a first positioning part (3031) and a guide part (3032) along its long axis. The guide part (3032) is curved outward in an arc shape. A sliding groove (3033) is provided on the first positioning part (3031). A sliding block (3034) is slidably installed in the sliding groove (3033). The positioning plate (304) is disposed on the front side of the sliding block (3034).

6. The quick dismounting tool for vertical axial flow pump impeller according to claim 5, characterized in that, The positioning plate (304) includes a mounting part (3041), a connecting part (3042), a second positioning part (3043), and a limiting part (3044) along its long axis. The connecting part (3042) is inclined. The second positioning part (3043) is curved into an arc shape that fits the outer surface of the impeller hub. Several second positioning parts (3043) form a ring. The limiting part (3044) is located at the top of the second positioning part (3043). The limiting part (3044) is curved into an arc shape along its long axis.

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