CN220389297U - Frock is dismantled to screw compressor's wear-resisting cover - Google Patents
Frock is dismantled to screw compressor's wear-resisting cover Download PDFInfo
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- CN220389297U CN220389297U CN202322053376.6U CN202322053376U CN220389297U CN 220389297 U CN220389297 U CN 220389297U CN 202322053376 U CN202322053376 U CN 202322053376U CN 220389297 U CN220389297 U CN 220389297U
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- holding ring
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- 238000006243 chemical reaction Methods 0.000 claims description 19
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- 238000000034 method Methods 0.000 abstract description 6
- 125000006850 spacer group Chemical group 0.000 description 7
- 239000002184 metal Substances 0.000 description 5
- 230000000694 effects Effects 0.000 description 3
- 230000000903 blocking effect Effects 0.000 description 2
- 230000006378 damage Effects 0.000 description 2
- 230000007704 transition Effects 0.000 description 2
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
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- 239000007788 liquid Substances 0.000 description 1
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Abstract
The utility model discloses a wear-resistant sleeve disassembly tool of a screw compressor, and belongs to the field of screw fitting disassembly. The device comprises a dismounting sleeve, a bolt and a holding ring; the disassembly sleeve is of a split structure symmetrically divided along the central axis of the disassembly sleeve and comprises a first sleeve outer circle, a first sleeve inner circle and a first sleeve end face, and a second sleeve end face is arranged on the upper side of the first sleeve inner circle; an external thread is arranged on the outer circle of the first sleeve, and a matched internal thread is arranged on the inner side of the holding ring; and a threaded hole matched with the screw thread of the bolt is formed in the end face of the second sleeve. The utility model can conveniently and rapidly realize the disassembly of the screw wear-resistant sleeve, reduce unnecessary workload in the disassembly process and improve the replacement efficiency of the wear-resistant sleeve.
Description
Technical Field
The utility model belongs to the field of screw fitting disassembly, and particularly relates to a tool for disassembling a wear-resistant sleeve of a screw compressor.
Background
In the field of screw compressors, the wear sleeve in the screw host is a wearing part which is damaged after the screw host is operated for a certain period of time. Because of the structural limitation of the screw host, the existing wear-resistant sleeve is generally designed to be thinner and is assembled on the input shaft of the screw host through interference, and is difficult to take off under normal conditions, and the existing wear-resistant sleeve is generally heated by open fire or is taken by a puller.
However, open fire heating requires special personnel to operate, is dangerous, is easy to cause injury to operators, is difficult to control, is easy to damage an input shaft of a host machine due to high temperature, causes the input shaft to be scrapped, and causes larger loss. In addition, when the wear-resistant sleeve is replaced under a specific working condition, open fire operation is not allowed, so that the whole screw main machine needs to be disassembled to work in other places, and large manpower and material resources are occupied, so that unnecessary cost expenditure is caused. The wear-resistant sleeve is taken out by the puller, so that proper stress points and positioning points are difficult to find, and the stress points of the puller are small, so that the wear-resistant sleeve is easy to be stressed unevenly and cannot be detached.
The Chinese patent application number is: CN201310692182.9, publication date: patent literature on 3 months and 5 days in 2014 discloses a single screw pump combined bushing pair, which comprises a stator, a metal bushing, a rubber bushing and a rotor, wherein the metal bushing is combined with the rubber bushing alternately and fixed in the stator, and the rotor is in interference fit with the rubber bushing and in clearance fit with the metal bushing. The metal bushing pair and the rubber bushing pair are combined mutually to make up for the defects, so that the performance and the service life of the single-screw pump are greatly improved. The metal bushing bears the overturning moment, extrusion force and friction force caused by eccentric rotation of the rotor, and plays a role in centralizing the stator. The rubber stator is in interference fit with the rotor, so that liquid leakage is reduced.
The Chinese patent application is as follows: CN201710721654.7, publication date: patent literature of 11 months and 30 days in 2018 discloses a pull rod of a shaft sleeve based on interference fit and an assembly method thereof, and relates to the technical field of mechanical assembly. Comprises a screw rod, wherein a first nut, a sleeve, a guide post, a blocking cover and a sleeve rod are sequentially matched from one end to the other end of the screw rod; one end of the loop bar is provided with an inner hexagonal loop head; the other end of the loop bar is provided with a second nut; a first through hole in clearance fit with the screw rod is formed in the center of the blocking plate; a first guide post is arranged on one end face of the guide post; the guide post is provided with a second through hole which is in clearance fit with the screw rod along the axial direction; the guide post is in sliding fit with the sleeve; a second guide post is arranged on one end face of the retaining cover; the baffle cover is provided with a third through hole which is in clearance fit with the screw rod along the axial direction; the second guide post and the first guide post are in sliding fit with a shaft sleeve.
Both schemes adopt interference fit to install the wear-resistant sleeve on the screw rod, and the wear-resistant sleeve installation mode can have the problem that the wear-resistant sleeve is difficult to disassemble as described above.
Disclosure of Invention
1. Problems to be solved
Aiming at the problem that the existing screw wear-resistant sleeve is difficult to detach when being mounted in interference fit, the utility model provides the tool for detaching the screw wear-resistant sleeve of the screw compressor, which can conveniently and rapidly detach the screw wear-resistant sleeve, reduce unnecessary workload in the detaching process and improve the replacing efficiency of the wear-resistant sleeve.
2. Technical proposal
In order to solve the problems, the utility model adopts the following technical scheme.
The utility model provides a wear-resisting cover dismantlement frock of screw compressor, includes dismantlement sleeve, bolt and holding ring; the disassembly sleeve is of a split structure symmetrically divided along the central axis of the disassembly sleeve and comprises a first sleeve outer circle, a first sleeve inner circle and a first sleeve end face, and a second sleeve end face is arranged on the upper side of the first sleeve inner circle; an external thread is arranged on the outer circle of the first sleeve, and a matched internal thread is arranged on the inner side of the holding ring; and a threaded hole matched with the screw thread of the bolt is formed in the end face of the second sleeve.
As a further improvement of the technical scheme, the device also comprises a conversion ring; the conversion circular ring is of a split structure symmetrically divided along the central axis of the conversion circular ring, and comprises a first circular ring inner circle, a second circular ring inner circle and a third circular ring inner circle which are sequentially arranged from top; the disassembly sleeve further comprises a second sleeve outer circle, and when the conversion ring is assembled on the disassembly sleeve, the second ring inner circle is assembled on the second sleeve outer circle.
As a further improvement of the technical scheme, the external thread of the dismounting sleeve and the internal thread of the holding ring are arranged at the upper end, and the sum of the height of the smooth surface of the holding ring and the height of the smooth surface of the inner circle of the first circular ring is smaller than the height of the outer circle of the first sleeve.
As a further improvement of the technical scheme, the effective length of the external thread of the dismounting sleeve is larger than that of the internal thread of the holding ring.
As a further improvement of the technical scheme, the light surface of the outer circle of the first sleeve is provided with a guide angle, and the light surface of the outer circle of the first sleeve is in clearance fit with the light surface of the holding ring.
As a further improvement of the technical scheme, the effective length of the external thread of the dismounting sleeve is larger than that of the internal thread of the holding ring.
As a further improvement of the technical scheme, the effective length of the external thread of the dismounting sleeve, which is larger than the internal thread of the holding ring, is 2-3 times of the thread pitch.
As a further improvement of the technical scheme, the outer surface of the holding ring is provided with flat surface structures which are uniformly distributed.
As a further improvement of the technical scheme, the partition surface of the disassembly sleeve is provided with a boss and a groove which are matched with each other.
As a further improvement of the technical scheme, the height of the outer circle of the first sleeve is larger than or equal to the height of the holding ring.
3. Advantageous effects
Compared with the prior art, the utility model has the beneficial effects that:
(1) According to the wear-resistant sleeve disassembly tool for the screw compressor, through the cooperation of the disassembly sleeve, the bolts and the holding ring, other special tools are not needed, and the screw host is not needed to be disassembled, so that the wear-resistant sleeve can be directly replaced on site, the problems that a special person is required to operate the open flame to take the wear-resistant sleeve, the open flame is dangerous to operate, the disassembly efficiency of the wear-resistant sleeve is low, the disassembly time is long and the cooperation of multiple persons is required are solved when the wear-resistant sleeve is conventionally disassembled, and the tool is convenient to carry and simple to operate, and can finish the operation by only few parts;
(2) According to the tool for disassembling the wear-resistant sleeve of the screw compressor, disclosed by the utility model, one tool can be used for disassembling the wear-resistant sleeve with various specifications by being provided with the conversion circular ring with corresponding specifications, so that the problem that the disassembling tool is not universal is solved;
(3) According to the wear-resistant sleeve disassembly tool for the screw compressor, the sum of the height of the inner circular light surface of the holding ring and the height of the light surface of the inner circular circle of the first sleeve is smaller than the height of the outer circle of the first sleeve, so that when the conversion ring is assembled, the holding ring can press the end face of the conversion first ring to fix the conversion ring with a split structure;
(4) According to the wear-resistant sleeve disassembly tool for the screw compressor, the effective length of the external threads of the disassembly sleeve is larger than that of the internal threads of the holding ring, so that the holding ring can be screwed to the end face of the third sleeve, and the fixation effect on the disassembly sleeve is improved;
(5) According to the wear-resistant sleeve disassembly tool for the screw compressor, the partition surface of the disassembly sleeve is provided with the boss and the groove which are matched with each other, so that the axial positioning during the assembly of the split structure of the disassembly sleeve can be easily realized during the use, and the assembly efficiency is improved;
(6) According to the wear-resistant sleeve disassembly tool for the screw compressor, the guide angle is formed on the light surface of the outer circle of the first sleeve, the light surface of the outer circle of the first sleeve is in clearance fit with the light surface of the holding ring, and the holding ring can be easily assembled;
(7) According to the wear-resistant sleeve disassembly tool for the screw compressor, the flat surface structures which are uniformly distributed are arranged on the outer surface of the holding ring, so that the screw threads matched with the holding ring and the disassembly sleeve can be conveniently rotated and screwed, and the split disassembly sleeve is fixed.
Drawings
FIG. 1 is an assembly schematic diagram of a disassembly tool;
FIG. 2 is a schematic view of the construction of the removal sleeve;
FIG. 3 is a cross-sectional view of a transition ring;
FIG. 4 is an assembled schematic view of a transition ring;
in the figure: 1. disassembling the sleeve; 11. an outer circumference of the first sleeve; 12. an inner circle of the first sleeve; 13. a first sleeve end face; 14. a second sleeve end face; 15. the outer circle of the second sleeve; 16. a third sleeve end face; 2. a bolt; 3. a holding ring; 4. converting a circular ring; 41. an inner circle of the first ring; 42. the inner circle of the second circular ring; 43. the inner circle of the third circular ring; 44. a first annular end face; 5. an input shaft; 6. a wear-resistant sleeve; 7. and a spacer bush.
Detailed Description
Exemplary embodiments of the present utility model are described in detail below. While these exemplary embodiments are described in sufficient detail to enable those skilled in the art to practice the utility model, it is to be understood that other embodiments may be realized and that various changes to the utility model may be made without departing from the spirit and scope of the utility model. The following more detailed description of the embodiments of the utility model is not intended to limit the scope of the utility model, as claimed, but is merely illustrative and not limiting of the utility model's features and characteristics in order to set forth the best mode of carrying out the utility model and to sufficiently enable those skilled in the art to practice the utility model. Accordingly, the scope of the utility model is limited only by the attached claims.
Example 1
As shown in fig. 1, the wear-resistant sleeve 6 is arranged on the input shaft 5 of the screw host of the screw compressor through interference fit, a spacer 7 which is arranged on the input shaft 6 in clearance fit is arranged below the wear-resistant sleeve 6, the upper end of the spacer 7 is tightly attached to the wear-resistant sleeve 5, and the side surface of the spacer 7 is provided with a groove. The wear-resistant sleeve disassembly tool for the screw compressor is used for disassembling the wear-resistant sleeve 6, and the specific structure and the working principle of the disassembly tool are described in detail below.
As shown in fig. 2, the disassembly tool comprises a disassembly sleeve 1, bolts 2, a holding ring 3 and a conversion ring 4. The disassembly sleeve 1 is of a split structure symmetrically split along the central axis of the disassembly sleeve, and comprises a first sleeve outer circle 11, a first sleeve inner circle 12 and a first sleeve end face 13, wherein the upper side of the first sleeve inner circle 12 is provided with a second sleeve end face 14. The first sleeve excircle 11 is provided with external threads, the inner side of the holding ring 3 is provided with matched internal threads, and meanwhile, the second sleeve end face 14 is provided with a threaded hole matched with the threads of the bolt 2.
As shown in fig. 1, when the wear-resistant sleeve 6 needs to be disassembled, the first sleeve inner circle 12 needs to be assembled at the upper end of the outer circle groove of the spacer 7, then the first sleeve outer circle 11 of the detachable sleeve 1 is sleeved with the holding ring 3 and locked and fixed through threads, and then the bolt 2 is assembled in the threaded hole of the first sleeve end face 13 and the bolt 2 is made to prop against the upper end face of the input shaft 5. After the assembly is completed, the bolt 2 is rotated, the upper end face of the input shaft 5 can prevent the bolt 2 from continuing to push downwards in the rotation process, and the bolt 2 and the input shaft 5 can not displace when the bolt 2 is continuously rotated because the input shaft 5 is fixed. At this time, the dismounting sleeve 1 can move upwards relative to the bolt 2 due to the acting force transmitted by the threads, and the second sleeve end face 14 can drive the spacer 7 and the wear-resistant sleeve 6 to move upwards together in the displacement process until the wear-resistant sleeve 6 falls off, and at this time, the dismounting of the wear-resistant sleeve is completed.
In this embodiment, the height of the outer circle 11 of the first sleeve is equal to or greater than the height of the holding ring 3. The effective length of the external thread of the dismounting sleeve 1 is larger than that of the internal thread of the holding ring 3, and is generally 2-3 times of the screw pitch, so that the holding ring 3 can be screwed to the third sleeve end face 16, and the fixing effect on the dismounting sleeve 1 is improved. Meanwhile, the external thread of the dismounting sleeve 1 and the internal thread of the holding ring 3 are both arranged at the upper end, the light surface of the first sleeve excircle 11 is provided with a guide angle, and the light surface of the first sleeve excircle 11 and the light surface of the holding ring 3 are in clearance fit, so that easy assembly of the holding ring can be realized. In addition, have boss and recess that mutually support on the split surface of dismantlement sleeve 1, can realize easily that the axial positioning when dismantling sleeve 1 split structure assembly improves assembly efficiency during the use.
Through the mode, other special tools are not needed, the screw main machine is not required to be disassembled, the wear-resistant sleeve can be directly replaced on site, the problems that the wear-resistant sleeve is required to be taken by special personnel to operate open fire when the wear-resistant sleeve is conventionally disassembled, the open fire is dangerous to operate, the wear-resistant sleeve is low in disassembly efficiency, long in disassembly time and needs to be cooperated by multiple persons are solved, and the operation can be completed by only few parts, so that the wear-resistant sleeve is convenient to carry and simple to operate.
However, since the diameter of the inner circle 12 of the first sleeve is fixed, when the wear-resistant sleeve 6 of a smaller model is disassembled, the larger diameter of the inner circle 12 of the first sleeve cannot be matched with the spacer 7 on the screw host machine, and the conversion ring 4 is needed to be added. As shown in fig. 3, the conversion ring 4 is a split structure symmetrically divided along its central axis, and includes a first ring inner circle 41, a second ring inner circle 42, and a third ring inner circle 43, which are sequentially disposed from above. In order to accommodate the assembly of the conversion ring 4, the disassembly sleeve 1 further comprises a second sleeve outer circumference 15, on which second sleeve outer circumference 15 the second ring inner circumference 42 is fitted when the conversion ring 4 is assembled on the disassembly sleeve 1.
Specifically, as shown in fig. 4, when the conversion ring 4 is assembled, the second ring inner circle 42 is assembled on the second sleeve outer circle 15, and then the first ring end surface 44 is pressed by the holding ring, so that the conversion ring 4 is fixed, and at this time, the operable inner diameter of the dismounting tool is converted from the diameter D of the first sleeve inner circle 12 to the diameter D of the third ring inner circle 43, so that the smaller-sized wear-resistant sleeve 6 can be dismounted.
In this embodiment, the sum of the height of the light surface of the holding ring 3 and the height of the light surface of the inner circle 41 of the first ring is smaller than the height of the outer circle 11 of the first sleeve, and is generally smaller than 3-5 times of the pitch, so that the holding ring can press the end surface of the first ring to fix the split-type converting ring when assembling the converting ring.
It is worth mentioning that the surface of holding ring 3 still is equipped with evenly distributed's flat face structure, is convenient for rotate and screw up holding ring 3 and dismantlement sleeve 1 complex screw thread to fix the dismantlement sleeve 1 of components of a whole that can function independently.
To sum up, the tool for disassembling the wear-resistant sleeve of the screw compressor can conveniently and rapidly disassemble the wear-resistant sleeve of the screw, reduce unnecessary workload in the disassembling process, and improve the replacement efficiency of the wear-resistant sleeve.
Claims (10)
1. The utility model provides a frock is dismantled to screw compressor's wear-resisting cover which characterized in that: comprises a disassembly sleeve (1), a bolt (2) and a holding ring (3); the disassembly sleeve (1) is of a split structure symmetrically split along the central axis of the disassembly sleeve, and comprises a first sleeve outer circle (11), a first sleeve inner circle (12) and a first sleeve end face (13), wherein the upper side of the first sleeve inner circle (12) is provided with a second sleeve end face (14); an external thread is arranged on the outer circle (11) of the first sleeve, and a matched internal thread is arranged on the inner side of the holding ring (3); and a threaded hole in threaded fit with the bolt (2) is formed in the end face (14) of the second sleeve.
2. The wear sleeve disassembly tool of a screw compressor according to claim 1, wherein: also comprises a conversion circular ring (4); the conversion circular ring (4) is of a split structure symmetrically divided along the central axis of the conversion circular ring, and comprises a first circular ring inner circle (41), a second circular ring inner circle (42) and a third circular ring inner circle (43) which are sequentially arranged from top; the disassembly sleeve (1) further comprises a second sleeve outer circle (15), and when the conversion ring (4) is assembled on the disassembly sleeve (1), the second ring inner circle (42) is assembled on the second sleeve outer circle (15).
3. The wear sleeve disassembly tool of a screw compressor according to claim 2, wherein: the external thread of the dismounting sleeve (1) and the internal thread of the holding ring (3) are arranged at the upper end, and the sum of the height of the smooth surface of the holding ring (3) and the height of the smooth surface of the first circular ring inner circle (41) is smaller than the height of the first sleeve outer circle (11).
4. A wear sleeve removal tooling for a screw compressor according to claim 3, wherein: the effective length of the external thread of the dismounting sleeve (1) is larger than that of the internal thread of the holding ring (3).
5. The tool for disassembling the wear-resistant sleeve of the screw compressor according to claim 4, wherein: the smooth surface of the first sleeve excircle (11) is provided with a guide angle, and the smooth surface of the first sleeve excircle (11) is in clearance fit with the smooth surface of the holding ring (3).
6. The wear sleeve removal tool for a screw compressor according to any one of claims 1-5, wherein: the effective length of the external thread of the dismounting sleeve (1) is larger than that of the internal thread of the holding ring (3).
7. The tool for disassembling the wear-resistant sleeve of the screw compressor according to claim 6, wherein: the external thread of the dismounting sleeve (1) is larger than the effective length of the internal thread of the holding ring (3) by 2-3 times of screw pitch.
8. The wear sleeve removal tool for a screw compressor according to any one of claims 1-5, wherein: the outer surface of the holding ring (3) is provided with flat surface structures which are uniformly distributed.
9. The wear sleeve removal tool for a screw compressor according to any one of claims 1-5, wherein: the partition surface of the disassembly sleeve (1) is provided with a boss and a groove which are matched with each other.
10. The wear sleeve removal tool for a screw compressor according to any one of claims 1-5, wherein: the height of the outer circle (11) of the first sleeve is larger than or equal to the height of the holding ring (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322053376.6U CN220389297U (en) | 2023-07-31 | 2023-07-31 | Frock is dismantled to screw compressor's wear-resisting cover |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322053376.6U CN220389297U (en) | 2023-07-31 | 2023-07-31 | Frock is dismantled to screw compressor's wear-resisting cover |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220389297U true CN220389297U (en) | 2024-01-26 |
Family
ID=89605936
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322053376.6U Active CN220389297U (en) | 2023-07-31 | 2023-07-31 | Frock is dismantled to screw compressor's wear-resisting cover |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220389297U (en) |
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2023
- 2023-07-31 CN CN202322053376.6U patent/CN220389297U/en active Active
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