CN109382785B - Molecular pump rotor dismantles frock and molecular pump - Google Patents
Molecular pump rotor dismantles frock and molecular pump Download PDFInfo
- Publication number
- CN109382785B CN109382785B CN201811110240.1A CN201811110240A CN109382785B CN 109382785 B CN109382785 B CN 109382785B CN 201811110240 A CN201811110240 A CN 201811110240A CN 109382785 B CN109382785 B CN 109382785B
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- Prior art keywords
- sleeve
- molecular pump
- screw
- claw
- pump rotor
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
- B25B27/00—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for
- B25B27/02—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for for connecting objects by press fit or detaching same
- B25B27/023—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for for connecting objects by press fit or detaching same using screws
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Details And Applications Of Rotary Liquid Pumps (AREA)
- Rotary Pumps (AREA)
- Applications Or Details Of Rotary Compressors (AREA)
Abstract
The invention provides a molecular pump rotor disassembling tool and a molecular pump. The connecting sleeve, the pull claw and the threaded sleeve are all T-shaped; the center of the connecting sleeve is provided with a through hole for penetrating and ejecting the screw rod, and both sides of the connecting sleeve are provided with a plurality of through holes for penetrating screws for connecting the threaded sleeves; the pull claw is used by combining a plurality of cut half T-shaped pull claws; the center of the screw sleeve is provided with an internal thread, and the outer side of the screw sleeve is also provided with an internal thread. The invention can make up the defect that the existing outer claw puller is used for disassembling the molecular pump rotor, can not damage the molecular pump rotor, and has the advantages of simple and compact structure, large pulling force, no slippage and the like.
Description
Technical Field
The invention relates to the field of vacuum obtaining equipment, in particular to a molecular pump rotor disassembling tool and a molecular pump.
Background
The molecular pump is used as a vacuum obtaining device, the working rotating speed of the molecular pump is generally up to tens of thousands of revolutions per minute, and the molecular pump is a high-rotating-speed and high-precision device. The high-speed rotor is an important high-precision part of the molecular pump.
At present, the existing disassembling tool is an outer claw puller, the inner hole of a molecular pump rotor is often small, and the existing outer claw puller cannot stretch into the inner hole; even if the specially-made miniature puller is used, the contact area is small, and the puller is easy to slip off, so that the rotor of the molecular pump is damaged.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide a molecular pump rotor disassembling tool and a molecular pump.
The invention provides a molecular pump rotor disassembling tool which mainly comprises an ejection screw rod, a screw, a connecting sleeve, a pulling claw and a threaded sleeve;
the center of the connecting sleeve is provided with a screw rod through hole, and an ejection screw rod penetrates through the screw rod through hole;
one or more screw through holes are formed in the two sides of the coupling sleeve, and screws penetrate through the screw through holes;
the connecting sleeve and the threaded sleeve are vertically arranged and are connected through a screw;
in the axial direction, the pulling claw is positioned between the coupling sleeve and the screw sleeve; the outermost side in the radial direction is a pull claw, and the inner side of the pull claw is a connecting sleeve and a screw sleeve.
Preferably, the pulling claw is mainly formed by combining a plurality of independent pulling claw pieces;
the end with the small diameter of the screw sleeve is placed in the middle of the plurality of pull claw pieces;
the center of the screw sleeve is provided with an internal thread in threaded connection with the screw, and the outer side of the screw sleeve is also provided with an internal thread in threaded connection with the pull claw;
the convex edge of the screw sleeve is limited by the pulling claw.
Preferably, the coupling sleeve, the pull claw and the screw sleeve are all T-shaped, and the pull claw piece is of a half T-shaped structure.
The molecular pump provided by the invention comprises a molecular pump rotor and the molecular pump rotor dismounting tool;
the convex edge of the screw sleeve is limited by the inner hole of the molecular pump rotor
Preferably, the convex edge of the pulling claw is embedded in the inner groove of the molecular pump rotor.
Compared with the prior art, the invention has the following beneficial effects:
the invention can make up the defect that the existing outer claw puller is used for disassembling the molecular pump rotor, reduces or does not damage the molecular pump rotor, and has the advantages of simple and compact structure, large pulling force, no slippage and the like. Meanwhile, the number of the molecular pump rotors is reduced or not damaged, so that the dynamic balance is reduced or not needed to be done again, and the working hours are saved.
Drawings
Other features, objects and advantages of the invention will become more apparent upon reading of the detailed description of non-limiting embodiments with reference to the following drawings:
FIG. 1 is a schematic structural view of a molecular pump rotor disassembly tool provided by the present invention;
the figures show that:
molecular pump rotor 1
Ejecting screw 2
Screw 3
Pulling claw 5
Screw sleeve 6
Molecular pump main shaft 7
Detailed Description
The present invention will be described in detail with reference to specific examples. The following examples will assist those skilled in the art in further understanding the invention, but are not intended to limit the invention in any way. It should be noted that it would be obvious to those skilled in the art that various changes and modifications can be made without departing from the spirit of the invention. All falling within the scope of the present invention.
The molecular pump provided by the invention comprises a molecular pump rotor and a molecular pump rotor dismounting tool, wherein the molecular pump rotor dismounting tool comprises a rotor mounting part and a rotor mounting part; the convex edge of the screw sleeve is limited by the inner hole of the molecular pump rotor; the convex edge of the pull claw is embedded in the inner groove of the molecular pump rotor. The molecular pump rotor disassembling tool mainly comprises an ejection screw rod, a screw, a connecting sleeve, a pulling claw and a threaded sleeve; the center of the connecting sleeve is provided with a screw rod through hole, and an ejection screw rod penetrates through the screw rod through hole; one or more screw through holes are formed in the two sides of the coupling sleeve, and screws penetrate through the screw through holes; the connecting sleeve and the threaded sleeve are vertically arranged and are connected through a screw; in the axial direction, the pulling claw is positioned between the coupling sleeve and the screw sleeve; the outermost side in the radial direction is a pull claw, and the inner side of the pull claw is a connecting sleeve and a screw sleeve.
Specifically, the pulling claw is mainly formed by combining a plurality of independent pulling claw parts; the end with the small diameter of the screw sleeve is placed in the middle of the plurality of pull claw pieces; the center of the screw sleeve is provided with an internal thread in threaded connection with the screw, and the outer side of the screw sleeve is also provided with an internal thread in threaded connection with the pull claw; the convex edge of the screw sleeve is limited by the pulling claw. The connecting sleeve, the pull claw and the threaded sleeve are all T-shaped, and the pull claw piece is of a half T-shaped structure.
The ejection screw rod is made of No. 45 steel and is subjected to quenching and tempering, so that the small residual stress, high structural precision stability and high strength are ensured; preferably, the thread is a fine thread and is uniformly stressed. The pull claw may be first machined and then wire cut to the desired shape. The coupling sleeve is made of soft materials such as nylon or polytetrafluoroethylene, and the upper surface of the molecular pump rotor cannot be scratched.
In a preferred embodiment, the installation process is as follows: the connecting sleeve penetrates through the ejection screw rod; putting the screw sleeve and leaving the mounting position of the pull claw; mounting the pulling claw in place; rotating the ejection screw rod to enable the threaded sleeve to be installed in place; the coupling sleeve is coupled with the screw sleeve by a screw.
The foregoing description of specific embodiments of the present invention has been presented. It is to be understood that the present invention is not limited to the specific embodiments described above, and that various changes or modifications may be made by one skilled in the art within the scope of the appended claims without departing from the spirit of the invention. The embodiments and features of the embodiments of the present application may be combined with each other arbitrarily without conflict.
Claims (4)
1. A molecular pump rotor disassembly tool is characterized by mainly comprising an ejection screw rod, a screw, a connecting sleeve, a pull claw and a threaded sleeve;
the center of the connecting sleeve is provided with a screw rod through hole, and an ejection screw rod penetrates through the screw rod through hole;
one or more screw through holes are formed in the two sides of the coupling sleeve, and screws penetrate through the screw through holes;
the connecting sleeve and the threaded sleeve are vertically arranged and are connected through a screw;
in the axial direction, the pulling claw is positioned between the coupling sleeve and the screw sleeve; in the radial direction, the outermost side is a pulling claw, and the inner side of the pulling claw is provided with a connecting sleeve and a threaded sleeve;
the pull claw is mainly formed by combining a plurality of independent pull claw parts;
the end with the small diameter of the screw sleeve is placed in the middle of the plurality of pull claw pieces;
the center of the screw sleeve is provided with an internal thread in threaded connection with the screw, and the outer side of the screw sleeve is also provided with an external thread in threaded connection with the pull claw;
the convex edge of the screw sleeve is limited by the pulling claw;
the structure of the molecular pump rotor disassembly tool can realize the installation process: the connecting sleeve penetrates through the ejection screw rod; putting the screw sleeve and leaving the mounting position of the pull claw; mounting the pulling claw in place; rotating the ejection screw rod to enable the threaded sleeve to be installed in place; connecting the connecting sleeve and the threaded sleeve by using a screw;
the coupling sleeve is made of nylon or polytetrafluoroethylene.
2. The molecular pump rotor disassembly tool of claim 1, wherein the coupling sleeve, the pull claw and the thread sleeve are all T-shaped, and the pull claw piece is of a half T-shaped structure.
3. A molecular pump, comprising a molecular pump rotor, characterized by comprising the molecular pump rotor disassembly tool of any one of claims 1 to 2;
the convex edge of the thread insert is limited by the inner hole of the molecular pump rotor.
4. The molecular pump of claim 3, wherein the raised edge of the pull tab is embedded in the inner groove of the molecular pump rotor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811110240.1A CN109382785B (en) | 2018-09-21 | 2018-09-21 | Molecular pump rotor dismantles frock and molecular pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811110240.1A CN109382785B (en) | 2018-09-21 | 2018-09-21 | Molecular pump rotor dismantles frock and molecular pump |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109382785A CN109382785A (en) | 2019-02-26 |
| CN109382785B true CN109382785B (en) | 2021-05-14 |
Family
ID=65417770
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811110240.1A Active CN109382785B (en) | 2018-09-21 | 2018-09-21 | Molecular pump rotor dismantles frock and molecular pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109382785B (en) |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3117713A (en) * | 1957-11-28 | 1964-01-14 | Degussa | Vacuum pump |
| US3611540A (en) * | 1969-07-28 | 1971-10-12 | Us Air Force | Seal puller |
| DE3728154C2 (en) * | 1987-08-24 | 1996-04-18 | Balzers Pfeiffer Gmbh | Multi-stage molecular pump |
| US4989311A (en) * | 1990-02-12 | 1991-02-05 | Rosin Leonard L | Bearing puller |
| US5894650A (en) * | 1997-06-05 | 1999-04-20 | Christina Louiza Barenburg | Universal gear puller |
-
2018
- 2018-09-21 CN CN201811110240.1A patent/CN109382785B/en active Active
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| Publication number | Publication date |
|---|---|
| CN109382785A (en) | 2019-02-26 |
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