Back-jacking dismounting device of condensate pump vertical motor coupling snap ring

Abstract

The utility model provides a back-jacking dismounting device of a condensate pump vertical motor coupling snap ring, the back-jacking dismounting device comprises a back-jacking sleeve, at least one positioning screw, a jacking disc and a jack, the back-jacking sleeve is provided with an accommodating cavity with an opening at one end, and the bottom surface of the accommodating cavity is provided with a first through hole; the jacking disc is arranged on the side, away from the opening of the containing cavity, of the back-jacking sleeve, and a second through hole and a third through hole are formed in the jacking disc; the number of the first through holes and the number of the second through holes are the same as the number of the positioning screw rods, the positioning screw rods sequentially penetrate through the second through holes and the first through holes, the positioning screw rods are sleeved with first fastening pieces, and the first fastening pieces are arranged on the side, away from the back-jacking sleeve, of the jacking disc; the jack penetrates through the third through hole. The back-jacking dismounting device is simple and safe to operate, and equipment cannot be damaged.

Description

Technical Field

[0001] This utility model relates to the field of coupling retaining ring disassembly, specifically to a top-removal disassembly device for a condensate pump vertical motor coupling retaining ring. Background Technology

[0002] like Figure 1 and Figure 2 As shown, in the existing vertical motor of the condensate pump, a retaining ring 13 is fitted on the motor shaft 11 during operation, and a coupling 12 is also fitted outside the motor shaft 11 and the retaining ring 13. After the work is completed, the retaining ring 13 needs to be disassembled.

[0003] The disassembly process of the existing retaining ring 13 is relatively complicated. It generally requires temporary assembly tools, and then using a jack to pull the coupling 12 away from the motor by applying force to the motor shaft or condensate pump housing before removing the retaining ring 13. This operation is not only inconvenient, but also poses a safety hazard because the force applied to the condensate pump is equivalent to pulling the coupling 12 out. It can also cause rotor movement and damage to the bearings, resulting in equipment damage.

[0004] Therefore, it is necessary to invent a disassembly device that is simple to operate, will not damage the equipment, and is safe to operate. Utility Model Content

[0005] The purpose of this invention is to provide a top-removal device for the retaining ring of a vertical motor coupling of a condensate pump, which solves the problems of existing disassembly devices being complex to operate, posing safety hazards, and easily damaging the equipment.

[0006] To achieve the purpose of this utility model, this utility model provides a top-return disassembly device for the retaining ring of a vertical motor coupling of a condensate pump. The top-return disassembly device includes a top-return sleeve, at least one positioning screw, a lifting plate, and a jack. The top-return sleeve is provided with a receiving cavity with one end open. A first through hole is provided on the bottom surface of the receiving cavity. The lifting plate is provided on the side of the top-return sleeve away from the opening of the receiving cavity. A second through hole and a third through hole are provided on the lifting plate. The number of the first through hole and the number of the second through hole are the same as the number of positioning screws. The positioning screw passes through the second through hole and the first through hole in sequence. A first fastener is sleeved on the positioning screw. The first fastener is provided on the side of the lifting plate away from the top-return sleeve. The jack passes through the third through hole.

[0007] As can be seen from the above solution, this utility model uses a positioning screw to achieve a stable connection between the return-top disassembly device and the motor shaft. When the return-top disassembly device is installed on the motor shaft, the opening of the return sleeve faces the motor shaft, and at least one surface of the return sleeve abuts against the coupling. Operating the jack, the jack acts on the return sleeve, and with the assistance of the positioning screw and the first fastener, pushes the coupling closer to the motor until the retaining ring is completely exposed from the coupling. Then, the return-top disassembly device is removed, allowing the retaining ring to be easily removed. During this process, the jack acts on the return sleeve without damaging the equipment. Since the coupling moves closer to the motor, unlike the pull-out operation in existing technologies, there are no safety hazards. Furthermore, the structure is simple, easy to install and operate. The positioning screw ensures connection stability while limiting the movement direction of the return sleeve; the first fastener ensures that the return sleeve moves closer to the motor.

[0008] A further option is to also provide a second fastener on the positioning screw. The second fastener is located on the side of the lifting plate near the return sleeve and can move along the axial direction of the positioning screw.

[0009] As can be seen from the above scheme, the setting of the second fastener increases the back-pushing force. When the hydraulic jack alone cannot meet the force requirements, the second fastener is made to abut against the back-pushing sleeve and apply force to achieve the effect of increasing the back-pushing force, thereby meeting the disassembly operations of various difficulties.

[0010] A further option is to use a nut as the second fastener.

[0011] As can be seen from the above scheme, using nuts as a second fastener is simple to operate, widely available, low in cost, and effective.

[0012] A further option is to provide a step inside the receiving cavity, with the inner diameter of the end of the receiving cavity away from the opening being smaller than the inner diameter of the end of the receiving cavity near the opening, and the inner diameter of the end of the receiving cavity away from the opening being smaller than the outer diameter of the coupling.

[0013] As can be seen from the above scheme, the relevant design of the step allows the return sleeve to be fitted outside the coupling, and the step surface abuts against the coupling, making the operation process more stable and safe.

[0014] A further option is to match the inner diameter of the cavity near the opening with the outer diameter of the coupling.

[0015] As can be seen from the above scheme, the size of the return sleeve matches the size of the coupling, ensuring that there will be no problem of uneven force causing displacement during operation, thereby further ensuring that the shaft surface will not be scratched.

[0016] A further option is to have the inner diameter of the receiving cavity smaller than the outer diameter of the coupling, and the inner diameter of the receiving cavity not smaller than the outer diameter of the motor shaft.

[0017] As can be seen from the above scheme, the coupling directly abuts against the surface at the opening of the return sleeve, reducing the size of the return sleeve and lowering the manufacturing cost.

[0018] A further option is that the jack includes a hydraulic lifting rod that passes through a third through hole.

[0019] A further proposed solution is to make the first through hole elliptical.

[0020] A further option is to use a nut as the first fastener, with the outer diameter of the nut being larger than the short diameter of the first through hole.

[0021] As can be seen from the above scheme, the above settings ensure the stability of the top dismantling device, reduce labor intensity, and improve work efficiency.

[0022] A further solution is to provide external threads on the positioning screw.

[0023] As can be seen from the above scheme, the positioning screw and the motor shaft are connected by a thread, which ensures a stable connection and is easy to operate. Attached Figure Description

[0024] Figure 1 This is a structural diagram of a vertical motor, coupling, and retaining ring for a condensate pump.

[0025] Figure 2 This is an exploded view of the vertical motor, coupling, and retaining ring of the condensate pump.

[0026] Figure 3 This is a schematic diagram of the structure of a top-removal disassembly device for a condensate pump vertical motor coupling retaining ring according to the present invention.

[0027] Figure 4 This is an exploded view of the structure of a top-removal disassembly device for a condensate pump vertical motor coupling retaining ring according to the present invention.

[0028] Figure 5 This is a cross-sectional view of a top-removal disassembly device for a condensate pump vertical motor coupling retaining ring, according to this utility model.

[0029] Figure 6 This is a cross-sectional view of a condensate pump vertical motor coupling retaining ring retraction and disassembly device that matches the condensate pump vertical motor coupling.

[0030] The present invention will be further described below with reference to the accompanying drawings and embodiments. Detailed Implementation

[0031] See Figures 1 to 6 The condensate pump vertical motor coupling retaining ring return and disassembly device provided in this embodiment includes a return sleeve 2, at least one positioning screw 3, a lifting plate 4, a jack 5, a first fastener 6, and a second fastener 7. In this embodiment, the jack 5 is a hydraulic jack.

[0032] The return sleeve 2 is provided with a receiving cavity 22 open at one end. In this embodiment, a step 23 is provided inside the receiving cavity 22. The inner diameter of the end of the receiving cavity 22 away from the opening is smaller than the inner diameter of the end of the receiving cavity 22 near the opening, and the inner diameter of the end of the receiving cavity 22 away from the opening is smaller than the outer diameter of the coupling 12. At the same time, in this embodiment, the inner diameter of the end of the receiving cavity 22 near the opening matches the outer diameter of the coupling 12. The step 23 allows the return sleeve 2 to be fitted onto the outside of the coupling 12, with the step surface abutting against the coupling 12. The matching size of the return sleeve 2 with the size of the coupling 12 ensures that uneven force will not cause displacement during operation, thereby further ensuring that the shaft surface will not be scratched. Of course, in practical applications, the inner diameter of the receiving cavity 22 can also be smaller than the outer diameter of the coupling 12, but it is required that the inner diameter of the receiving cavity 22 is not smaller than the outer diameter of the motor shaft 11. At this point, the coupling 12 directly abuts against the surface of the opening of the return sleeve 2, which reduces the size of the return sleeve 2. The specific design of the receiving cavity 22 can be determined according to actual needs.

[0033] A first through hole 21 is provided on the bottom surface of the receiving cavity 22. The lifting plate 4 is located on the side of the return sleeve 2 away from the opening of the receiving cavity 22. The lifting plate 4 is provided with a second through hole 42 and a third through hole 41. The number of the first through hole 21 and the second through hole 42 are the same as the number of positioning screws 3. In this embodiment, the number of the first through hole 21, the second through hole 42 and the positioning screws 3 are all 4.

[0034] The positioning screw 3 passes through the second through hole 42 and the first through hole 21 in sequence. In actual use, the positioning screw 3 is inserted into the hole 111 on the motor shaft 11, achieving a stable connection between the return disassembly device and the motor shaft 11. In this embodiment, the positioning screw 3 is provided with an external thread (not shown in the figure). The positioning screw 3 and the motor shaft 11 are connected by a thread, which is stable and easy to operate. A first fastener 6 is sleeved on the positioning screw 3. The first fastener 6 is located on the side of the lifting plate 4 away from the return sleeve 2. A second fastener 7 is also sleeved on the positioning screw 3. The second fastener 7 is located on the side of the lifting plate 4 near the return sleeve 2. The second fastener 7 can move along the axial direction of the positioning screw 3. In this embodiment, the first through hole 21 is elliptical. The outer diameter of the first fastener 6 is larger than the short diameter of the first through hole 21. Both the first fastener 6 and the second fastener 7 are nuts. Using nuts as the first fastener 6 and the second fastener 7 is simple to operate, widely available, low in cost, and has a good effect.

[0035] The hydraulic jack 5 passes through the third through hole 41. Specifically, the hydraulic jack 5 includes a hydraulic lifting rod 51, which passes through the third through hole 41.

[0036] See Figure 6 In this embodiment, the return-top disassembly device is fixed in the cavity 111 of the motor shaft 11 by the positioning screw 3, achieving a stable connection between the return-top disassembly device and the motor shaft 11. When the return-top disassembly device is installed on the motor shaft 11, the opening of the return sleeve 2 faces the motor shaft 11, and at least one surface of the return sleeve 2 abuts against the coupling 12. In this embodiment, the surface of the step 23 inside the receiving cavity 22 abuts against the coupling 12. In some other embodiments, the opening surface of the receiving cavity 22 may also abut against the coupling 12. Then, the second fastener 7 is installed on the positioning screw 3. Next, the lifting plate 4 and the first fastener 6 are installed on the positioning screw 3, and at the same time, the hydraulic jack 5 is installed on the lifting plate 4.

[0037] Operate the hydraulic jack 5, which acts on the return sleeve 2. With the assistance of the positioning screw 3 and the first fastener 6, the coupling 12 is pushed to move closer to the motor until the retaining ring 13 is completely exposed from the coupling 12. Then, remove the return disassembly device to smoothly remove the retaining ring 13.

[0038] During this process, the setting of the first fastener 6 ensures that the return sleeve 2 moves closer to the motor, and the setting of the second fastener 7 increases the return force. When the hydraulic jack 5 alone cannot meet the force requirements, the second fastener 7 is made to abut against the return sleeve 2 and apply force to achieve the effect of increasing the return force, thereby meeting the disassembly operations of various difficulties.

[0039] In this embodiment, the hydraulic jack 5 acts on the return sleeve 2, and the end face of the coupling 12 is subjected to force. This prevents the rotor or stator from moving and avoids damage to the equipment. Since the coupling 12 moves towards the motor, unlike the pull-out operation in the prior art, there are no safety hazards. Furthermore, the device has fewer working parts, a simpler structure, and is lightweight, making installation and operation convenient and simple, thus improving work efficiency and significantly reducing the labor intensity of disassembling the retaining ring 13. The positioning screw 3 ensures connection stability while limiting the movement direction of the return sleeve 2, effectively reducing the impact of human factors on the operation quality.

[0040] Finally, it should be emphasized that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. For those skilled in the art, the present utility model can have various changes and modifications. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A device for retracting and disassembling the retaining ring of a vertical motor coupling for a condensate pump, characterized in that: The top-return disassembly device includes a top-return sleeve, at least one positioning screw, a lifting plate, and a jack. The top-return sleeve is provided with a receiving cavity with one end open. A first through hole is provided on the bottom surface of the receiving cavity. The lifting plate is provided on the side of the top-return sleeve away from the opening of the receiving cavity. A second through hole and a third through hole are provided on the lifting plate. The number of the first through hole and the number of the second through hole are the same as the number of the positioning screws. The positioning screws pass through the second through hole and the first through hole in sequence. A first fastener is sleeved on the positioning screw. The first fastener is located on the side of the lifting plate away from the return sleeve. The jack passes through the third through hole.

2. The condensate pump vertical motor coupling retaining ring return and disassembly device as described in claim 1, characterized in that: The positioning screw is also fitted with a second fastener, which is located on the side of the lifting plate near the return sleeve. The second fastener can move along the axial direction of the positioning screw.

3. The condensate pump vertical motor coupling retaining ring return and disassembly device as described in claim 2, characterized in that: The second fastener is a nut.

4. The condensate pump vertical motor coupling retaining ring return and disassembly device as described in claim 1, characterized in that: The cavity is provided with a step, the inner diameter of the cavity at the end away from the opening is smaller than the inner diameter of the cavity at the end near the opening, and the inner diameter of the cavity at the end away from the opening is smaller than the outer diameter of the coupling.

5. The jacking and disassembly device for the retaining ring of a vertical motor coupling for a condensate pump as described in claim 4, characterized in that: The inner diameter of the cavity near the opening matches the outer diameter of the coupling.

6. The jacking and disassembly device for the retaining ring of a vertical motor coupling for a condensate pump as described in claim 1, characterized in that: The inner diameter of the receiving cavity is smaller than the outer diameter of the coupling, and the inner diameter of the receiving cavity is not smaller than the outer diameter of the motor shaft.

7. A device for retracting and disassembling the retaining ring of a vertical motor coupling for a condensate pump as described in any one of claims 1 to 6, characterized in that: The jack includes a hydraulic lifting rod that passes through the third through hole.

8. A device for retracting and disassembling the retaining ring of a vertical motor coupling for a condensate pump as described in any one of claims 1 to 6, characterized in that: The first through hole is elliptical.

9. The condensate pump vertical motor coupling retaining ring return and disassembly device as described in claim 8, characterized in that: The first fastener is a nut, and the outer diameter of the nut is larger than the short diameter of the first through hole.

10. A device for retracting and disassembling the retaining ring of a vertical motor coupling for a condensate pump as described in any one of claims 1 to 6, characterized in that: The positioning screw is provided with external threads.

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