Multi-stage centrifugal pump impeller dismounting tool
By designing a multi-stage centrifugal pump impeller disassembly tool, using components such as frames, linear modules, concave blocks and bidirectional displacement mechanisms, the rapid disassembly of the impeller is achieved, and the problem of laborious and inefficient removal of the impeller in the prior art is solved.
Patent Information
- Application Number
- CN202420744434.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-11
- Publication Date
- 2025-04-22
- Estimated Expiration
- 2034-04-11
AI Technical Summary
The multi-stage centrifugal pump impeller is closely combined with the pump shaft, which is difficult to disassemble, and the prior art is laborious and inefficient.
A multi-stage centrifugal pump impeller removal tool is designed, including frame, linear module, concave block, bidirectional displacement mechanism and clamping mechanism. Through the synergy of these components, the rapid disassembly of the impeller is achieved.
By fixing the pump shaft with the clamping mechanism and the cylinder, the bidirectional displacement mechanism drives the linear module and the concave block to approach each other, quickly disassembly the impeller from the pump shaft, reducing the difficulty of disassembly of the impeller.
Smart Images
Figure CN222779494U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of impeller disassembly, in particular to a multi-stage centrifugal pump impeller disassembly tool. Background Art
[0002] A multistage centrifugal pump is a type of pump used to transport liquids. It is composed of a cascade of multiple centrifugal pumps. Each centrifugal pump accelerates the liquid and generates pressure through the impeller, and then sends the liquid to the next centrifugal pump. Its main structure is the pump body, impeller and pump shaft. Multistage centrifugal pumps are usually used in situations where high pressure is required, such as construction, municipal engineering, industrial production and other fields.
[0003] During the maintenance of a multi-stage centrifugal pump, the impeller may need to be repaired or replaced. However, the impeller and the pump shaft fit tightly together, and the contact part between the impeller and the pump shaft may rust due to water corrosion, causing the impeller and the pump shaft to be more tightly combined and difficult to disassemble. Direct manual disassembly of the impeller is very laborious and inefficient, which increases the difficulty of disassembling the impeller.
[0004] Therefore, a multi-stage centrifugal pump impeller disassembly tool is proposed to solve the above problems. Utility Model Content
[0005] The utility model aims to provide a multi-stage centrifugal pump impeller disassembly tool to solve the above problems.
[0006] To achieve this purpose, the utility model adopts the following technical solutions:
[0007] A multi-stage centrifugal pump impeller disassembly tool comprises a frame with an open front, linear modules are vertically arranged on both sides of the frame, a concave block is arranged at the movable end of the linear module, a bidirectional shifting mechanism is arranged between the frame and the linear module for adjusting the horizontal position of the linear module, a telescopic shaft extending to a cylinder inside the frame is arranged at the top, and a clamping mechanism is arranged at the lower end of the frame.
[0008] Preferably, the bidirectional shifting mechanism includes a vertical plate, a double-axis cylinder and a connecting shaft. Vertical plates are vertically provided on the left and right sides of the frame. The two linear modules are provided with connecting shafts on opposite sides with one end extending through the outside of the frame. The end of the connecting shaft extending through the outside of the frame is connected to the vertical plate on the same side. The back of the frame is provided with two double-axis cylinders with two telescopic ends respectively connected to the two vertical plates.
[0009] Preferably, the clamping mechanism includes a bidirectional screw, a guide shaft, an arc groove, a convex block and a rocker. Two convex blocks distributed on the left and right are provided at the lower part of the inside of the frame. The two convex blocks have corresponding convex ends and have arc grooves on the convex sides. A guide shaft passing through the rear end of the convex block is provided between the left and right sides of the frame. A threaded hole is provided at the front end of the convex block. The inner left side of the frame is rotatably connected with a bidirectional screw passing through the threaded hole and extending to the right side of the frame. The convex blocks are respectively located at both ends of the bidirectional screw, which is transmission-connected to the threaded hole. The bidirectional screw passes through the right end of the frame and is provided with a rocker.
[0010] Preferably, a circular hole corresponding to a telescopic axis of the cylinder is opened at the bottom of the frame, a concave-shaped support block is provided at the bottom of the frame, and a circular hole corresponding to the circular hole is opened on the inner bottom wall of the support block.
[0011] Preferably, a bottom plate is horizontally disposed at the bottom of the frame, a support column is disposed between the bottom plate and the frame, and a plurality of connection holes distributed in a rectangular array are opened on the top of the bottom plate.
[0012] Preferably, a limit drop plate is horizontally provided at the upper end of the inner part of the frame, a load-bearing shaft extending to the rear of the frame is provided on the back of the limit drop plate, and a cylinder 2 having a telescopic shaft extending therethrough and connected to the back of the limit drop plate is provided on the back of the frame.
[0013] Compared with the prior art, the beneficial effects of the utility model are as follows: the pump shaft is fixed by a clamping mechanism and a cylinder, and the linear modules and concave blocks on both sides are driven to approach each other through a bidirectional shifting mechanism, so that the two ends of the impeller are placed on the inner sides of the concave blocks on both sides, and the concave blocks can be driven to rise linearly through the linear module, thereby replacing manual labor and quickly removing the impeller from the pump shaft, thereby reducing the difficulty of removing the impeller. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] The accompanying drawings further illustrate the present invention, but the contents in the accompanying drawings do not constitute any limitation to the present invention.
[0015] Figure 1 This is a schematic diagram of the three-dimensional structure of the utility model Figure 1 ;
[0016] Figure 2 This is a schematic diagram of the three-dimensional structure of the utility model Figure 2 ;
[0017] Figure 3 This is a schematic diagram of the three-dimensional structure of the utility model Figure 3 ;
[0018] Figure 4 It is a three-dimensional sectional view of the frame of the utility model.
[0019] In the attached drawings: 1. frame; 2. linear module; 3. concave block; 4. bidirectional shift mechanism; 41. vertical plate; 42. double-axis cylinder; 43. connecting shaft; 5. cylinder one; 6. clamping mechanism; 61. bidirectional screw rod; 62. guide shaft; 63. arc groove; 64. convex block; 65. rocker; 71. support block; 72. circular hole; 81. support column; 82. bottom plate; 9. connecting hole; 101. drop limit plate; 102. cylinder two; 103. load-bearing shaft. DETAILED DESCRIPTION
[0020] The following describes the embodiments of the utility model in detail, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the utility model, and cannot be understood as limiting the utility model. In the description of the utility model, it should be understood that the orientation or position relationship indicated by the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", etc. is based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing the utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the utility model. In addition, the terms "first" and "second" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, the features defined as "first" and "second" can explicitly or implicitly include one or more of the features. In the description of the present invention, "multiple" means two or more, and "several" means one or more, unless otherwise clearly and specifically defined.
[0021] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or mutual communication; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.
[0022] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.
[0023] The disclosure below provides many different embodiments or examples for realizing different structures of the utility model. In order to simplify the disclosure of the utility model, the components and settings of specific examples are described below. Of course, they are merely examples, and the purpose is not to limit the utility model. In addition, the utility model may repeat reference numbers and / or reference letters in different examples, and such repetition is for the purpose of simplification and clarity, and does not itself indicate the relationship between the various embodiments and / or settings discussed. In addition, the utility model provides various specific examples of processes and materials, but those of ordinary skill in the art may be aware of the application of other processes and / or the use of other materials.
[0024] In this embodiment, Figure 1-4 A multi-stage centrifugal pump impeller disassembly tool is provided. The utility model includes a frame 1 with an opening at the front, linear modules 2 are vertically arranged on both sides inside the frame 1, a concave block 3 is arranged at the movable end of the linear module 2, a two-way shifting mechanism 4 is arranged between the frame 1 and the linear module 2, and is used to adjust the horizontal position of the linear module 2, a cylinder 5 with a telescopic shaft extending to the inside thereof is arranged on the top of the frame 1, and a clamping mechanism 6 is arranged at the lower end inside the frame 1.
[0025] In this embodiment, the lower end of the pump shaft is clamped by the clamping mechanism 6, and the telescopic shaft of the cylinder 5 can support the upper end of the pump shaft, and the linear modules 2 and the concave blocks 3 on both sides are driven to approach each other through the bidirectional shifting mechanism 4, so that the concave blocks 3 on both sides clamp the impeller, that is, the two ends of the impeller are placed on the inner side of the concave blocks 3 on both sides, and the concave blocks 3 can be driven to rise linearly through the linear module 2, thereby replacing manual and quickly removing the impeller from the pump shaft, thereby reducing the difficulty of removing the impeller.
[0026] Preferably, as another embodiment of the utility model, the bidirectional shift mechanism 4 includes a vertical plate 41, a double-axis cylinder 42 and a connecting shaft 43. Vertical plates 41 are vertically provided on the left and right sides of the frame 1, and the opposite sides of the two linear modules 2 are provided with connecting shafts 43 with one end extending through the outside of the frame 1. The end of the connecting shaft 43 extending through the outside of the frame 1 is connected to the vertical plate 41 on the same side, and the back of the frame 1 is provided with a double-axis cylinder 42 with two telescopic ends respectively connected to the two vertical plates 41.
[0027] It should be noted that there are multiple connecting shafts 43, which can provide sufficient support for the linear module 2. At the same time, it makes the connection between the linear module 2 and the vertical plate 41 more firm and stable. The two telescopic ends of the driving double-axis cylinder 42 are contracted, which can drive the vertical plates 41, the linear module 2, the concave blocks 3 and the connecting shafts 43 on both sides to approach each other, and then place the two ends of the impeller respectively in the interior of the concave blocks 3 on both sides.
[0028] Preferably, as another embodiment of the utility model, the clamping mechanism 6 includes a bidirectional screw 61, a guide shaft 62, an arc groove 63, a convex block 64 and a rocker 65. Two convex blocks 64 distributed on the left and right are provided at the lower part of the interior of the frame 1. The two convex blocks 64 have convex ends corresponding to each other and both convex sides are provided with an arc groove 63. A guide shaft 62 passing through the rear end of the convex block 64 is provided between the left and right sides of the frame 1. A threaded hole is provided at the front end of the convex block 64. The interior of the frame 1 is provided with a screw rod 61, a guide shaft 62 passing through the rear end of the convex block 64, and a screw rod 63 is provided at the front end of the convex block 64. A bidirectional screw rod 61 is rotatably connected on the left side, passing through a threaded hole and extending to the right side of the frame 1. Convex blocks 64 are respectively located at both ends of the bidirectional screw rod 61. The bidirectional screw rod 61 is transmission-connected to the threaded hole. The bidirectional screw rod 61 extends through the right end of the frame 1 and is provided with a rocker 65. A circular hole 72 corresponding to the telescopic axis of the cylinder 5 is provided at the bottom of the frame 1. A concave-shaped support block 71 is provided at the bottom of the frame 1. A circular hole corresponding to the circular hole 72 is provided on the inner bottom wall of the support block 71.
[0029] In this embodiment, the pump shaft with the impeller installed is inserted into the circular hole 72, and the bottom end of the pump shaft will abut against the circular hole on the support block 71 to limit and support the pump shaft to prevent the pump shaft from falling and shaking. The rotating rocker 65 can drive the bidirectional screw 61 to rotate. The thread rotation directions at both ends of the bidirectional screw 61 are opposite. In this process, the two ends of the bidirectional screw 61 will transmit with the threaded holes on the two convex blocks 64 to drive the convex blocks 64 on both sides to approach or move away from each other along the guide shaft 62. In the process of approaching each other, the arc groove 63 on the convex block 64 will clamp the lower end of the pump shaft to complete the fixation of the pump shaft, so that the pump shaft is fixed more firmly.
[0030] Preferably, as another embodiment of the utility model, a bottom plate 82 is horizontally provided at the bottom of the frame 1, and support columns 81 are provided between the bottom plate 82 and the frame 1, the number of the support columns 81 is at least 4, and a plurality of connection holes 9 distributed in a rectangular array are opened on the top of the bottom plate 82. The support columns 81 and the bottom plate 82 form a bracket to support the equipment, and the connection holes 9 on the bottom plate 82 can cooperate with fasteners to install and fix the equipment.
[0031] Preferably, as another embodiment of the utility model, a drop limiting plate 101 is horizontally provided at the upper end of the interior of the frame 1, a load-bearing shaft 103 penetrating to the rear of the frame 1 is provided on the back of the drop limiting plate 101, and a cylinder 2 102 is provided on the back of the frame 1 with a telescopic shaft penetrating into the interior thereof and connected to the back of the drop limiting plate 101.
[0032] It should be noted that when cylinder 2 102 is not in use, the telescopic shaft is in a retracted state, and after the linear module 2 and the concave block 3 remove the impeller from the pump shaft, they will be sleeved on the telescopic shaft of cylinder 1 5, and cylinder 2 102 can drive the limit plate 101 to move forward to be placed under the removed impeller, and in this process, the load-bearing shaft 103 on the limit plate 101 moves accordingly and supports the limit plate 101, and when the concave block 3 leaves the removed impeller, the impeller will be placed on the limit plate 101 to support and limit the impeller, and the limit plate 101 will limit the impeller from falling.
[0033] Working principle: the pump shaft with the impeller installed is vertically inserted into the circular hole 72, and the lower end of the pump shaft will be supported by the circular hole on the support block 71. At the same time, rotating the rocker 65 can drive the bidirectional screw 61 to rotate, and the bidirectional screw 61 will be transmitted through the threaded hole to drive the two convex blocks 64 to approach each other along the guide shaft 62, and then clamp the lower end of the pump shaft through the arc groove 63 on the convex block 64, and then fix the pump shaft to limit and support the pump shaft to prevent the pump shaft from falling and shaking. Then, the telescopic shaft of the driving cylinder 15 is extended and against the upper end of the pump shaft. At this time, the two telescopic ends of the driving double-axis cylinder 42 are contracted to drive the vertical plates 41, the linear module 2, the concave block 3 and the connecting shaft 43 on both sides to approach each other, so that the two ends of the impeller at the top of the pump shaft are respectively placed in the inside of the concave blocks 3 on both sides, and the concave block 3 can be driven to rise linearly through the linear module 2, thereby replacing manual and quickly removing the impeller from the pump shaft.
[0034] In the description of this specification, the description with reference to the terms "embodiment", "one embodiment", "certain embodiments", "illustrative embodiment", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.
[0035] The technical principle of the present invention is described above in combination with specific embodiments. These descriptions are only for explaining the principle of the present invention and cannot be interpreted as limiting the protection scope of the present invention in any way. Based on the explanations here, technicians in this field can think of other specific implementations of the present invention without creative work, and these equivalent variations or substitutions are all included in the scope defined by the claims of this application.
Claims
1. A multi-stage centrifugal pump impeller disassembly tool, characterized by: The invention comprises a frame (1) with an opening at the front, linear modules (2) being vertically arranged on both sides of the frame (1), a concave block (3) being arranged at the movable end of the linear module (2), a bidirectional shifting mechanism (4) being arranged between the frame (1) and the linear module (2) for adjusting the horizontal position of the linear module (2), a cylinder (5) having a telescopic shaft extending therefrom being arranged at the top of the frame (1), and a clamping mechanism (6) being arranged at the lower end of the frame (1).
2. The multi-stage centrifugal pump impeller disassembly tool according to claim 1, characterized in that: The bidirectional shift mechanism (4) comprises a vertical plate (41), a double-axis cylinder (42) and a connecting shaft (43); the left and right sides of the frame (1) are both vertically provided with vertical plates (41); the opposite sides of the two linear modules (2) are both provided with connecting shafts (43) with one end extending through the outside of the frame (1); the end of the connecting shaft (43) extending through the outside of the frame (1) is connected to the vertical plate (41) on the same side; the back side of the frame (1) is provided with two double-axis cylinders (42) with two telescopic ends respectively connected to the two vertical plates (41).
3. The multi-stage centrifugal pump impeller disassembly tool according to claim 1, characterized in that: The clamping mechanism (6) comprises a bidirectional screw (61), a guide shaft (62), an arc groove (63), a convex block (64) and a rocker (65). Two convex blocks (64) are arranged at the lower part of the interior of the frame (1) and are distributed on the left and right sides. The two convex blocks (64) have corresponding convex ends and both convex sides are provided with an arc groove (63). A guide shaft (62) passing through the rear end of the convex block (64) is arranged between the left and right sides of the frame (1). A threaded hole is arranged at the front end of the convex block (64). The left side of the inner part of the frame (1) is rotatably connected with a bidirectional screw (61) passing through the threaded hole and penetrating to the right side of the frame (1). The convex blocks (64) are respectively located at the two ends of the bidirectional screw (61). The bidirectional screw (61) is transmission-connected to the threaded hole. The bidirectional screw (61) passes through the right end of the frame (1) and is provided with a rocker (65).
4. The multi-stage centrifugal pump impeller disassembly tool according to claim 1, characterized in that: The bottom of the frame (1) is provided with a circular hole (72) which corresponds exactly to the telescopic axis of the cylinder (5), the bottom of the frame (1) is provided with a concave-shaped support block (71), and the inner bottom wall of the support block (71) is provided with a circular hole which corresponds exactly to the circular hole (72).
5. The multi-stage centrifugal pump impeller disassembly tool according to claim 1, characterized in that: A bottom plate (82) is horizontally arranged at the bottom of the frame (1), a support column (81) is arranged between the bottom plate (82) and the frame (1), and a plurality of connection holes (9) distributed in a rectangular array are opened at the top of the bottom plate (82).
6. The multi-stage centrifugal pump impeller disassembly tool according to claim 1, characterized in that: A drop limiting plate (101) is horizontally arranged at the upper end of the interior of the frame (1), a load-bearing shaft (103) penetrating to the rear of the frame (1) is arranged on the back of the drop limiting plate (101), and a cylinder 2 (102) is arranged on the back of the frame (1) with a telescopic shaft penetrating the interior thereof and connected to the back of the drop limiting plate (101).