Centrifugal pump impeller disassembling and assembling tool

Abstract

The utility model belongs to the technical field of centrifugal pump impeller dismounting, and mainly relates to a centrifugal pump impeller dismounting tool which comprises a mounting plate, the mounting plate is provided with receding holes for screws on an impeller to penetrate out, the mounting plate is further provided with at least three stop blocks distributed in a circumferential mode, and the stop blocks are located on the outer sides of the receding holes. The check blocks are used for being arranged in gaps between every two adjacent blades on the impeller so as to be matched with the impeller in a rotation stopping mode. The impeller is stopped from rotating through the three stop blocks, and meanwhile, the screw for fastening the impeller extends out of the formed avoiding hole, so that the screw is convenient to disassemble or assemble, and the impeller is prevented from rotating when the screw is operated; and meanwhile, manual contact with the impeller is not needed, and the safety is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of centrifugal pump impeller disassembly, and mainly relates to a centrifugal pump impeller disassembly and assembly tool. Background Art

[0002] In the beer and beverage industry, centrifugal pumps are used for the transportation of materials and products. The operation of disassembling and assembling the impeller is relatively frequent during the maintenance of the pump. However, after the centrifugal pump has been used for a period of time, the clamping force of the impeller fixing screws will increase, making the screws difficult to remove. During the maintenance process, the impeller is generally clamped manually by hand, and then the screws are tightened or loosened with a wrench to disassemble and assemble the impeller. However, the above-mentioned method of manually clamping the impeller by hand is relatively laborious and inconvenient to use, and it also poses certain risks to the hands of the staff. Utility Model Content

[0003] The utility model provides a centrifugal pump impeller disassembly and assembly tool to solve the problem in the prior art that it is inconvenient to manually clamp the centrifugal pump impeller by hand and disassemble and assemble it, and there is a certain safety risk.

[0004] In order to solve the above problems, the utility model adopts the following technical solutions:

[0005] A centrifugal pump impeller disassembly and assembly tool comprises a mounting plate, wherein the mounting plate is provided with an avoidance hole for allowing screws on the impeller to pass through, and the mounting plate is also provided with at least three circumferentially distributed stoppers, the stoppers are located outside the avoidance hole, and the stoppers are used to be arranged in the gap between two adjacent blades on the impeller to cooperate with the impeller to stop rotation.

[0006] The invention has the following beneficial effects: the impeller is stopped from rotating by three blocks, and the screws for fastening the impeller extend from the set avoidance holes, so that the screws can be easily removed or installed, and the impeller is prevented from rotating when the screws are operated; at the same time, there is no need for manual contact with the impeller, thereby improving safety.

[0007] Furthermore, the position of the stopper on the mounting plate is adjustable.

[0008] Furthermore, the mounting plate is provided with at least three waist-shaped holes, each of which is penetrated by a bolt and threadedly connected to the corresponding stopper.

[0009] The invention has the following beneficial effects: the bolt passes through the waist-shaped hole to fix the stopper, so that the fastening position of the bolt can be changed along the length direction of the waist-shaped hole, thereby making the tooling adaptable to the disassembly and assembly of impellers of different sizes.

[0010] Furthermore, the block is provided with a through hole, the bolt has a screw and a head, the screw passes through the through hole and the waist-shaped hole in sequence, and the block is fixedly connected to the mounting plate by a nut, and the block is provided with a step hole which is interconnected with the through hole and coaxial; the head is located in the step hole, and the depth of the step hole is not less than the height of the head.

[0011] The invention has the following beneficial effects: the head of the bolt is completely located in the step hole, so when the impeller is disassembled, the head of the bolt in the stopper will not collide with the impeller, thereby avoiding damage to the impeller by the bolt.

[0012] Furthermore, the mounting plate comprises a circular plate segment and a handle plate segment connected together, and the stopper is mounted on the circular plate segment.

[0013] Furthermore, the number of the waist-shaped holes is three, and the three waist-shaped holes are evenly distributed on the circular plate segment at equal intervals, and the length direction of each waist-shaped hole extends along the radial direction of the circular plate segment.

[0014] Furthermore, the circular plate segment and the handle plate segment are an integrally formed structure.

[0015] The invention has the following beneficial effects: the integrally formed structure can increase the strength of the tooling and reduce the probability of damage to the tooling when the impeller is disassembled and assembled.

[0016] Furthermore, the stopper is a component made of high molecular nylon material.

[0017] The invention has the following beneficial effects: because the stopper is in direct contact with the impeller, and the stopper made of high molecular nylon material can reduce the damage of the stopper to the impeller when the impeller is disassembled and assembled by the tooling. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] By reading the detailed description below with reference to the accompanying drawings, the above and other purposes, features and advantages of the exemplary embodiments of the present invention will become easy to understand. In the accompanying drawings, several embodiments of the present invention are shown in an exemplary and non-limiting manner, and the same or corresponding reference numerals represent the same or corresponding parts, wherein:

[0019] Figure 1 This is a schematic diagram of the structure of the first viewing angle of the embodiment 1 of the utility model;

[0020] Figure 2 This is a schematic diagram of the structure of the second viewing angle of Embodiment 1 of the present utility model;

[0021] Figure 3 This is a schematic structural diagram of the first perspective when disassembling and assembling the impeller of Embodiment 1 of the utility model;

[0022] Figure 4 This is a structural schematic diagram of the second viewing angle when the impeller is disassembled and assembled in Embodiment 1 of the utility model;

[0023] Figure 5 is a schematic structural diagram of the stopper in Example 1;

[0024] Figure 6 is a cross-sectional view of the stopper in Example 1;

[0025] Figure 7 It is a schematic diagram of the structure of the bolt in Example 1;

[0026] Figure 8 This is a structural schematic diagram of the first perspective when the bolt is passed through the stopper in Example 1;

[0027] Fig. 9 It is a structural schematic diagram of a second viewing angle when the bolt is passed through the stopper in Example 1;

[0028] Fig.10 This is a structural schematic diagram of the arrangement position of the first hole on the mounting plate in Example 2.

[0029] Description of reference numerals:

[0030] 1. Handle plate section; 2. Circular plate section; 3. Screw; 4. Avoidance hole; 5. Stopper; 6. Waist-shaped hole; 7. Bolt; 8. Nut; 9. Impeller; 10. Blade; 11. Screw; 12. Through hole; 13. Step hole; 14. Head; 15. First hole. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Those skilled in the art should know that the embodiments described below are part of the embodiments of the present disclosure, rather than all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the utility model.

[0032] Various non-limiting embodiments of the present invention are described in detail below. Any number of elements in the accompanying drawings is for illustration and not for limitation, and any naming is only for distinction and does not have any limiting meaning. It should be noted that the embodiments and features in the embodiments of the present application can be combined with each other without conflict.

[0033] Example 1

[0034] like Figure 1-Figure 4As shown, a centrifugal pump impeller disassembly and assembly tool includes bolts 7, a mounting plate and a stopper 5 for preventing the impeller 9 from rotating, wherein the mounting plate includes a circular plate segment 2 and a handle plate segment 1 connected together, and a avoidance hole 4 for avoiding a screw 11 is provided at the center of the circular plate segment 2, so that the screw 11 for fastening the impeller 9 can extend from the avoidance hole 4, making it convenient for the staff to use a wrench to disassemble and assemble the screw 11, and the handle plate segment 1 is convenient for the staff to hold the tool with their hands.

[0035] In this embodiment, three waist-shaped holes 6 are evenly spaced around the avoidance hole 4 on the circular plate segment 2, and the length direction of each waist-shaped hole 6 extends along the radial direction of the circular plate segment 2. A bolt 7 is passed through each waist-shaped hole 6 and is threadedly connected to the corresponding stopper 5. The bolt 7 passes through the waist-shaped hole 6 to fix the stopper 5, so that the bolt 7 can change the fastening position along the length direction of the waist-shaped hole 6, so that the tooling can adapt to the disassembly and assembly of impellers 9 of different sizes.

[0036] In this embodiment, there are three stoppers 5, which is the same as the number of waist-shaped holes 6. The three stoppers 5 are all installed on the circular plate segment 2, and the three stoppers 5 are arranged around the circumference of the avoidance hole 4. The three stoppers 5 are used to stop the impeller 9 from rotating, and the screws 11 for fastening the impeller 9 extend from the set avoidance hole 4, so that the screws 11 are easy to remove or install, and the impeller 9 is prevented from rotating when the screws 11 are operated; at the same time, there is no need for manual contact with the impeller 9, which improves safety.

[0037] like Figure 5-Figure 9 As shown, the block 5 is provided with a through hole 12, the bolt 7 has a screw rod 3 and a head 14, the head 14 of the bolt 7 has an inner hexagonal structure, the screw rod 3 passes through the through hole 12 and the waist-shaped hole 6 in sequence, and the block 5 is fixedly connected to the circular plate segment 2 through the nut 8, and the block 5 is provided with a step hole 13 connected to the through hole 12, the axial direction of the through hole 12 is consistent with the axial direction of the step hole 13, the head 14 is located in the step hole 13, and the depth of the step hole 13 is not less than the height of the head 14. The head 14 of the bolt 7 is completely located in the step hole 13, so that when the impeller 9 is disassembled, the head 14 of the bolt 7 in the block 5 will not collide with the impeller 9, thereby avoiding the damage of the bolt 7 to the impeller 9.

[0038] In order to increase the strength of the tooling and reduce the probability of damage to the tooling when disassembling and assembling the impeller 9, the circular plate segment 2 and the handle plate segment 1 are integrally formed.

[0039] In order to reduce the damage of the block 5 to the impeller 9 when the tool is disassembling and assembling the impeller 9, the block 5 is a component made of polymer nylon because the block 5 directly contacts the impeller 9. At the same time, polymer nylon has good wear resistance, and the use of polymer nylon material increases the service life of the tool.

[0040] When in use, the three blocks 5 will be close to the three blades 10 of the impeller 9. The staff will hold the handle plate section 1 and apply force to prevent the tooling from rotating through the blocks 5 and the impeller 9. After that, the staff can use a wrench to disassemble and assemble the screws 11 that fasten the impeller 9.

[0041] When the disassembly tool in this embodiment is needed to disassemble impellers 9 of different specifications, the nut 8 is loosened and the position of the stopper 5 in the waist-shaped hole 6 is adjusted so that the three stoppers 5 can adapt to the specification changes of the blades 10 on the impeller 9.

[0042] Example 2

[0043] The difference between this embodiment and embodiment 1 is that Fig.10 As shown, the circular plate segment 2 in this embodiment is provided with more than four first holes 15 distributed in a circumference, and the first holes 15 are light holes, wherein the number of the first holes 15 is preferably a multiple of three, such as 6, 9 or 12, etc.

[0044] At least two first holes 15 are located in the same radial direction. When the position of the stopper 5 needs to be adjusted to adapt to impellers 9 of different specifications, the stopper 5 needs to be installed in the first holes 15 at different positions in the same radial direction.

[0045] Example 3

[0046] The difference between this embodiment and the first embodiment is that the position of the stopper 5 in this embodiment cannot be adjusted, three threaded holes distributed in a circumference are provided on the circular plate segment 2, and the bolts 7 pass through the stopper 5 and are threadedly connected to the threaded holes.

[0047] Example 4

[0048] The difference between this embodiment and embodiment 1 is that the position of the stopper 5 in this embodiment cannot be adjusted, and three second holes distributed in a circumference are provided on the circular plate segment 2. The second holes are light holes, and the bolts 7 pass through the stopper 5 and the second holes in sequence and are threadedly connected with the nuts 8.

Claims

1. A centrifugal pump impeller disassembly and assembly tool, characterized in that: The invention comprises a mounting plate, wherein the mounting plate is provided with an escape hole (4) for allowing a screw (11) on an impeller (9) to pass through, and the mounting plate is also provided with at least three stoppers (5) distributed in a circumferential manner, wherein the stoppers (5) are located outside the escape hole (4), and the stoppers (5) are used to be arranged in the gap between two adjacent blades (10) on the impeller (9) to cooperate with the impeller (9) to stop rotation.

2. The centrifugal pump impeller disassembly and assembly tool according to claim 1, characterized in that: The position of the stopper (5) on the mounting plate is adjustable.

3. The centrifugal pump impeller disassembly and assembly tool according to claim 2, characterized in that: At least three waist-shaped holes (6) are provided on the mounting plate, and a bolt (7) is passed through each waist-shaped hole (6) and is threadedly connected to the corresponding stopper (5).

4. The centrifugal pump impeller disassembly and assembly tool according to claim 3, characterized in that: The stopper (5) is provided with a through hole (12); the bolt (7) comprises a screw rod (3) and a head (14); the screw rod (3) passes through the through hole (12) and the waist-shaped hole (6) in sequence, and the stopper (5) is fixedly connected to the mounting plate through a nut (8); the stopper (5) is provided with a step hole (13) which is interconnected with the through hole (12) and coaxial; the head (14) is located in the step hole (13); and the depth of the step hole (13) is not less than the height of the head (14).

5. The centrifugal pump impeller disassembly and assembly tool according to claim 4, characterized in that: The mounting plate comprises a circular plate segment (2) and a handle plate segment (1) connected together, and the stopper (5) is mounted on the circular plate segment (2).

6. The centrifugal pump impeller disassembly and assembly tool according to claim 5, characterized in that: The number of the waist-shaped holes (6) is three, and the three waist-shaped holes (6) are evenly distributed on the circular plate segment (2) at equal intervals, and the length direction of each waist-shaped hole (6) extends along the radial direction of the circular plate segment (2).

7. The centrifugal pump impeller disassembly and assembly tool according to claim 6, characterized in that: The circular plate segment (2) and the handle plate segment (1) are an integrally formed structure.

8. A centrifugal pump impeller disassembly and assembly tool according to any one of claims 1 to 7, characterized in that: The stopper (5) is a component made of high molecular nylon.

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