A dismounting single-stage pump impeller cap fixing device

Abstract

The utility model provides a kind of single-stage pump impeller spare cap fixing device of disassembly, including base, first fixed link and second fixed link are sequentially equipped in the top of base, third fixed link and fourth fixed link are equipped between the first fixed link and second fixed link, first hand wheel is equipped in the top of second fixed link, and both are connected by first screw rod, first screw rod first end is connected with first hand wheel, other end is equipped second fixed link and tail portion is equipped with upper impeller clamping piece, the position of first fixed link corresponding upper impeller clamping piece is equipped with lower impeller clamping piece.The utility model is by operating different hand wheel and adjusting fixed screw rod spacing, realize to the effective fixation of different size impeller around, and then after impeller does not rotate, using electric wrench removes impeller spare cap, effectively improves single-stage pump maintenance efficiency, reduces maintenance cost, guarantees production process continuity and stability.

Description

Technical Field

[0001] This utility model belongs to the technical field of auxiliary equipment for disassembling the spare cap of a single-stage pump impeller, and relates to a device for fixing the spare cap of a single-stage pump impeller. Background Technology

[0002] In various industrial production activities and daily life fluid transportation scenarios, single-stage pumps have become a widely used key device due to their advantages such as relatively simple structure, convenient operation, and low cost.

[0003] As one of the core components of a single-stage pump, the mechanical seal plays a crucial role in ensuring the pump's efficient and stable operation. Its main function is to prevent leakage of the fluid medium inside the pump, while preventing external impurities from entering the pump body, maintaining a stable pressure environment inside the pump, and ensuring the pump's normal operating efficiency. However, due to the long-term operation of single-stage pumps under complex and diverse working conditions, the mechanical seal will inevitably be affected by various factors and gradually become damaged.

[0004] When a mechanical seal is damaged and needs replacement, the impeller spare cap becomes an unavoidable obstacle during the replacement process due to its special installation position. Impeller spare caps are typically used to secure the impeller firmly to the pump shaft, ensuring its stability during high-speed rotation. When replacing the mechanical seal, without first removing the impeller spare cap, the impeller cannot be removed from the pump shaft, making effective removal and replacement of the mechanical seal located behind the impeller impossible. Traditional impeller spare caps often use conventional threaded connections. After long-term operation, the threads may rust or seize due to the combined effects of vibration, corrosion, and high temperatures, making it impossible to secure the impeller and significantly increasing the difficulty of removing the spare cap. Furthermore, some impeller spare caps are quite compact in size and installation space, making them difficult to access with conventional tools, further complicating the disassembly process. Utility Model Content

[0005] The purpose of this utility model is to address the problems existing in the prior art by providing a device for disassembling the impeller spare cap of a single-stage pump. This solves the problem that when the mechanical seal is damaged and needs to be replaced, the size and installation space of the impeller spare cap are relatively compact, and existing conventional tools are difficult or impossible to disassemble.

[0006] Therefore, the present invention adopts the following technical solution: A device for disassembling a single-stage pump impeller cap fixing device includes a base, on which a first fixing rod and a second fixing rod are arranged in parallel. A third fixing rod and a fourth fixing rod are arranged between the first fixing rod and the second fixing rod, and the third fixing rod and the fourth fixing rod are also arranged in parallel. A first handwheel is provided above the second fixing rod, and the two are connected by a first screw. The first screw is connected to the first handwheel at its head end, and the second fixing rod passes through the other end. An upper impeller clamp is provided at the tail end. A lower impeller clamp is provided at the position of the first fixing rod corresponding to the position of the upper impeller clamp. The third fixed rod is provided with a first movable rod sleeve, and the two are connected by a second screw. The third fixed rod is provided with a first sliding groove at the position corresponding to the second screw. The first movable rod sleeve contacts the outer wall of the third fixed rod through the third screw. The fourth fixed rod is provided with a second movable rod sleeve, and the two are connected by a fourth screw. The fourth fixed rod is provided with a second sliding groove at the position corresponding to the fourth screw. The second movable rod sleeve contacts the outer wall of the fourth fixed rod through a fifth screw.

[0007] The upper impeller clamp is arc-shaped, and the lower impeller clamp is the same size and shape as the upper impeller clamp; the upper impeller clamp and the lower impeller clamp are in a hugging shape.

[0008] The first, second, third, and fourth fixing rods form a frame, and the four are connected end to end by connecting rod sleeves.

[0009] A pad is provided in the gap between the base and the first fixing rod.

[0010] The beneficial effects of this utility model are as follows: This invention effectively fixes the upper and lower ends and left and right sides of impellers of different sizes by adjusting different operating handwheels and adjusting the spacing of fixing screws during use. After ensuring that the impeller does not rotate, the impeller spare cap can be removed with an electric wrench, which effectively improves the maintenance efficiency of single-stage pumps, reduces maintenance costs, and ensures the continuity and stability of the production process. Attached Figure Description

[0011] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0012] In the diagram, 1-base, 2-first fixing rod, 3-second fixing rod, 4-third fixing rod, 5-fourth fixing rod, 6-first handwheel, 7-first screw, 8-upper impeller clamp, 9-lower impeller clamp, 10-first movable rod sleeve, 11-second screw, 12-first sliding groove, 13-third screw, 14-connecting rod sleeve, 15-second movable rod sleeve, 16-fourth screw, 17-second sliding groove, 18-fifth screw, 19-pad, 20-second handwheel, 21-third handwheel. Detailed Implementation

[0013] The technical solution of this utility model will be described below with reference to the accompanying drawings and implementation methods.

[0014] like Figure 1 As shown, a device for fixing a single-stage pump impeller cap includes a base 1. A first fixing rod 2 and a second fixing rod 3 are sequentially arranged parallel to each other on the top of the base 1. A third fixing rod 4 and a fourth fixing rod 5 are arranged between the first fixing rod 2 and the second fixing rod 3, also parallel to each other. The first fixing rod 2, the second fixing rod 3, the third fixing rod 4, and the fourth fixing rod 5 form a frame, and are connected end-to-end by four connecting rod sleeves 14. Specifically, the two ends of the third fixing rod 4 and the fourth fixing rod 5 are fixedly connected to the connecting rod sleeves 14, while the two ends of the first fixing rod 2 and the second fixing rod 3 are movably connected to the connecting rod sleeves 14. That is, depending on the size of the single-stage pump impeller, the third fixing rod 4 and the fourth fixing rod 5 can move horizontally back and forth along the first fixing rod 2, and are fixed by bolts and nuts on the connecting rod sleeves 14.

[0015] A pad 19 is provided in the gap between the base 1 and the first fixing rod 2. The purpose of the pad 19 is to facilitate the displacement of the third fixing rod 4 and the fourth fixing rod 5.

[0016] A first handwheel 6 is provided above the second fixing rod 3, and the two are connected by a first screw 7. The first end of the first screw 7 is connected to the first handwheel 6, the other end passes through the second fixing rod 3, and the tail end is provided with an upper impeller clamp 8. A lower impeller clamp 9 is provided at the position of the first fixing rod 2 corresponding to the upper impeller clamp 8. Specifically, the upper impeller clamp 8 is arc-shaped, and the lower impeller clamp 9 is the same size and shape as the upper impeller clamp 8. The upper impeller clamp 8 and the lower impeller clamp 9 are in a hugging shape.

[0017] The third fixed rod 4 is provided with a first movable rod sleeve 10, and the two are connected by a second screw 11. The third fixed rod 4 is provided with a first sliding groove 12 at the position corresponding to the second screw 11, and the second screw 11 can move up and down along the first sliding groove 12. The first movable rod sleeve 10 contacts the outer wall of the third fixed rod 4 through the third screw 13. The third screw 13 is used to fix the relative position between the first movable rod sleeve 10 and the third fixed rod 4. The second screw 11 is provided with a second handwheel 20 on the side away from the upper impeller clamp 8.

[0018] The fourth fixed rod 5 is provided with a second movable rod sleeve 15, and the two are connected by a fourth screw 16. The fourth fixed rod 5 is provided with a second sliding groove 17 (not shown in the figure) at the position corresponding to the fourth screw 16. The second sliding groove 17 and the first sliding groove 12 are the same in shape and size. The fourth screw 16 can move up and down along the second sliding groove 17. The second movable rod sleeve 15 contacts the outer wall of the fourth fixed rod 5 through a fifth screw 18. The fifth screw 18 is used to fix the relative position between the second movable rod sleeve 15 and the fourth fixed rod 5. The side of the fourth screw 16 away from the upper impeller clamp 8 is provided with a third handwheel 21.

[0019] The surfaces of the first handwheel 6, the second handwheel 20, and the third handwheel 21 are provided with anti-slip textures, which makes it easier for operators to grip and rotate, reduces operator fatigue, and improves operating efficiency.

[0020] The usage process of this utility model is as follows: First, fix the single-stage pump impeller on the lower impeller clamp 9. Adjust the relative positions of the third fixing rod 4 and the fourth fixing rod 5, and fix them with the screw nut on the connecting rod sleeve 14. Then, rotate the second handwheel 20 and the third handwheel 21 to adjust the distance between the second screw 11 and the fourth screw 16 to clamp the single-stage pump impeller in the horizontal direction. Next, rotate the first handwheel 6 to adjust the position of the upper impeller clamp 8, which cooperates with the lower impeller clamp 9 to clamp the single-stage pump impeller in the vertical direction. Finally, after the impeller is effectively fixed, use an electric wrench to remove the single-stage pump impeller cap.

Claims

1. A device for disassembling and fixing the spare cap of a single-stage pump impeller, characterized in that, Includes a base (1), on which a first fixing rod (2) and a second fixing rod (3) are arranged in sequence and are parallel to each other. A third fixing rod (4) and a fourth fixing rod (5) are arranged between the first fixing rod (2) and the second fixing rod (3), and the third fixing rod (4) and the fourth fixing rod (5) are also arranged in parallel. The second fixing rod (3) is provided with a first handwheel (6) above it, and the two are connected by a first screw (7). The first screw (7) is connected to the first handwheel (6) at its head end, and the second fixing rod (3) is passed through the other end. The tail end is provided with an upper impeller clamp (8). The first fixing rod (2) is provided with a lower impeller clamp (9) at the position corresponding to the upper impeller clamp (8). The third fixed rod (4) is provided with a first movable rod sleeve (10), and the two are connected by a second screw (11). The third fixed rod (4) is provided with a first sliding groove (12) at the position corresponding to the second screw (11). The first movable rod sleeve (10) contacts the outer wall of the third fixed rod (4) through the third screw (13). The fourth fixed rod (5) is provided with a second movable rod sleeve (15), and the two are connected by a fourth screw (16). The fourth fixed rod (5) is provided with a second sliding groove (17) at the position corresponding to the fourth screw (16). The second movable rod sleeve (15) is in contact with the outer wall of the fourth fixed rod (5) through a fifth screw (18).

2. The device for disassembling a single-stage pump impeller cap fixing device according to claim 1, characterized in that, The upper impeller clamp (8) is arc-shaped, and the lower impeller clamp (9) is the same size and shape as the upper impeller clamp (8).

3. The device for disassembling a single-stage pump impeller cap fixing device according to claim 2, characterized in that, The upper impeller clamp (8) and the lower impeller clamp (9) are in a hugging shape.

4. The device for disassembling a single-stage pump impeller cap fixing device according to claim 1, characterized in that, The first fixing rod (2), the second fixing rod (3), the third fixing rod (4) and the fourth fixing rod (5) form a frame, and the four are connected end to end by a connecting rod sleeve (14).

5. A device for disassembling a single-stage pump impeller cap fixing device according to claim 1, characterized in that, A pad (19) is provided in the gap between the base (1) and the first fixing rod (2).

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