CN103821761B - Adjustable vacuum pump impeller locking device - Google Patents
Adjustable vacuum pump impeller locking device Download PDFInfo
- Publication number
- CN103821761B CN103821761B CN201410110692.5A CN201410110692A CN103821761B CN 103821761 B CN103821761 B CN 103821761B CN 201410110692 A CN201410110692 A CN 201410110692A CN 103821761 B CN103821761 B CN 103821761B
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- impeller
- regulating block
- pump
- vacuum pump
- annular regulating
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- 230000001105 regulatory effect Effects 0.000 claims abstract description 41
- 238000007789 sealing Methods 0.000 claims abstract description 14
- 230000008676 import Effects 0.000 claims abstract description 9
- 238000005516 engineering process Methods 0.000 abstract description 2
- 230000007797 corrosion Effects 0.000 description 3
- 238000005260 corrosion Methods 0.000 description 3
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000007812 deficiency Effects 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
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- Applications Or Details Of Rotary Compressors (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
A kind of adjustable vacuum pump impeller locking device, relate to vacuum pump technology field, vacuum pump comprises the pump housing, pump shaft, impeller, the import and export pump housing, mouth dish, land and motor, it is characterized in that impeller can be set on pump shaft in axial sliding, flat key is provided with between impeller and pump shaft, pump shaft front end is provided with the adjusting bolt coaxial with pump shaft, is arranged with annular regulating block in the middle part of adjusting bolt, and annular regulating block is threaded with impeller; Annular regulating block front end is provided with handle hole, and the adjusting bolt on front side of annular regulating block establishes locking nut, and on front side of impeller, middle part is provided with locking groove, and locking groove is interior, adjusting bolt is anterior is provided with sealing nut, is provided with seal ring between sealing nut and impeller.Structure of the present invention is simple, and easy to adjust, vacuum pump performance is high, good stability, long service life.
Description
Technical field
The present invention relates to vacuum pump technology field, say it is that a kind of structure is simple, easy to adjust in detail, the axial position of energy precise positioning impeller, vacuum pump performance is high, good stability, long service life adjustable vacuum pump impeller locking device.
Background technique
We know, existing vacuum pump comprises the pump housing, pump shaft, impeller, the import and export pump housing, mouth dish, land and motor, the pump housing is cylindrical, import and export the pump housing and be provided with suction port and relief opening, import and export the pump housing and be arranged on pump housing front end, import and export between the pump housing and the pump housing and be provided with mouth dish, mouth dish is provided with the inlet hole and exhaust port that suction port and relief opening are communicated with pump body, and mouth dish is fixedly connected with the import and export pump housing.Pump shaft is located in the pump housing, impeller is axially fixed on pump shaft through impeller nut, is provided with flat key between impeller and pump shaft, and impeller often rotates a circle and realizes once to suction and the discharge process of gas, land is arranged on pump housing rearward end, as rear end cover and the link between the pump housing and motor.Be provided with mechanical seal between impeller and land, motor is arranged on on rear side of land, and electric machine main shaft is connected with pump shaft.The impeller of this vacuum pump is in the pump housing, between land and mouth dish, gap between impeller and mouth dish is extremely important, the too little friction easily caused between impeller and mouth dish in gap, and gap is too large, easily cause the backflow between pressurized gas and suction gas, cause pump performance to decline.Existing vacuum pump, the gap between impeller and mouth dish cannot regulate, it is determined by production size, and due to error, easily occur between the two rubbing or the problem of excesssive gap, vacuum pump performance is low.When vacuum pump operation a period of time, because of the reasons such as wearing and tearing, corrosion cause the gap between impeller and mouth dish to change time, the working efficiency step-down gradually of vacuum pump, working life is short.
Summary of the invention
The object of the invention is to solve above-mentioned the deficiencies in the prior art, provide a kind of structure simple, easy to adjust, vacuum pump performance is high, good stability, the adjustable vacuum pump impeller locking device of long service life.
The technological scheme that the present invention solves the employing of above-mentioned the deficiencies in the prior art is:
A kind of adjustable vacuum pump impeller locking device, vacuum pump comprises the pump housing, pump shaft, impeller, the import and export pump housing, mouth dish, land and motor, it is characterized in that impeller can be set on pump shaft in axial sliding, flat key is provided with between impeller and pump shaft, pump shaft front end is provided with the adjusting bolt coaxial with pump shaft, in the middle part of adjusting bolt, (free to rotate) is arranged with annular regulating block, annular regulating block is threaded with impeller; Annular regulating block front end is provided with handle hole, and the adjusting bolt on front side of annular regulating block establishes locking nut, and on front side of impeller, middle part is provided with locking groove, and locking groove is interior, adjusting bolt is anterior is provided with sealing nut, is provided with seal ring between sealing nut and impeller.
Adjusting bolt described in the present invention is stud bolt, and stud bolt side is connected with spindle thread.
The present invention is when vacuum pump is assembled, rotate annular regulating block, because annular regulating block is threaded with impeller, the axial position of impeller on pump shaft can be regulated, be adjusted to rotation lock nut behind appropriate location, annular regulating block is pressed on pump shaft front end, re-uses sealing nut and annular regulating block, locking nut and adjusting bolt are sealed in the impeller of pump shaft front end, prevent annular regulating block, the locking nut rust that gets rusty is dead.Sealing nut and annular regulating block coordinate and play impeller shaft to the function of positioning and locking on main shaft simultaneously.The gap between impeller and mouth dish can be regulated accurately, avoid friction, improve vacuum pump performance high and working life.When vacuum pump operation a period of time, because of the reasons such as wearing and tearing, corrosion cause the gap between impeller and mouth dish to change time, the gap between impeller and mouth dish can be regulated, improve after its performance and continue to use.Structure of the present invention is simple, and easy to adjust, vacuum pump performance is high, good stability, long service life.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
Fig. 2 is the A place partial enlarged drawing of Fig. 1.
Fig. 3 is the left view of Fig. 1.
Embodiment
Adjustable vacuum pump impeller locking device as shown in the figure, vacuum pump comprises the pump housing 3, pump shaft 4, impeller 5, imports and exports the pump housing 7, mouth dish 11, land 2 and motor 1, it is characterized in that impeller 5 can be set on pump shaft 4 in axial sliding, transmission flat key is provided with between impeller and pump shaft, pump shaft 4 front end is provided with the adjusting bolt 6 coaxial with pump shaft, free to rotately in the middle part of adjusting bolt 6 be arranged with annular regulating block 10, annular regulating block 10 is provided with outside thread, impeller is provided with the internal thread matched with annular regulating block, and annular regulating block is threaded with impeller; Annular regulating block front end is provided with handle hole, is inserted by instrument in handle hole and rotates the rotation of annular regulating block, can impeller move axially on pump shaft.Adjusting bolt on front side of annular regulating block is provided with locking nut 8, on front side of impeller, middle part is provided with locking groove, locking groove is interior, adjusting bolt is anterior is provided with sealing nut 9, annular regulating block, locking nut and adjusting bolt are sealed in the impeller of pump shaft front end by sealing nut 9, prevent annular regulating block, the locking nut rust that gets rusty is dead.As can be seen from the figure, adjusting bolt is stud bolt, and stud bolt side is connected with spindle thread, opposite side and locking nut and sealing nut in mating connection.Be convenient to handling, easy to maintenance, quick.Seal ring is established between described sealing nut and impeller.
The present invention is when vacuum pump is assembled, rotate annular regulating block, because annular regulating block is threaded with impeller, the axial position of impeller on pump shaft can be regulated, be adjusted to rotation lock nut behind appropriate location, annular regulating block is pressed on pump shaft front end, re-uses sealing nut and annular regulating block, locking nut and adjusting bolt are sealed in the impeller of pump shaft front end, prevent annular regulating block, the locking nut rust that gets rusty is dead.Sealing nut and annular regulating block coordinate by impeller shaft to positioning and locking on main shaft, can prevent from loosening in using process.The present invention can determine accurately and regulate the gap between impeller and mouth dish, avoids friction, improves vacuum pump performance high and working life.When vacuum pump operation a period of time, because of the reasons such as wearing and tearing, corrosion cause the gap between impeller and mouth dish to change time, gap between impeller and mouth dish can be regulated by rotating annular regulating block, continuing to use after improving its performance.Structure of the present invention is simple, easy to adjust, and the axial position of energy precise positioning impeller, vacuum pump performance is high, good stability, long service life.
Claims (3)
1. an adjustable vacuum pump impeller locking device, vacuum pump comprises the pump housing, pump shaft, impeller, the import and export pump housing, mouth dish, land and motor, it is characterized in that impeller can be set on pump shaft in axial sliding, flat key is provided with between impeller and pump shaft, pump shaft front end is provided with the adjusting bolt coaxial with pump shaft, is arranged with annular regulating block in the middle part of adjusting bolt, and annular regulating block is provided with outside thread, impeller is provided with the internal thread that annular regulating block matches, and annular regulating block is threaded with impeller; Annular regulating block front end is provided with handle hole, and the described adjusting bolt on front side of annular regulating block is provided with locking nut, and on front side of impeller, middle part is provided with locking groove, and locking groove is interior, adjusting bolt is anterior is provided with sealing nut.
2. adjustable vacuum pump impeller locking device according to claim 1, it is characterized in that described adjusting bolt is stud bolt, stud bolt side is connected with spindle thread.
3. adjustable vacuum pump impeller locking device according to claim 1 and 2, is characterized in that establishing seal ring between described sealing nut and impeller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410110692.5A CN103821761B (en) | 2014-03-25 | 2014-03-25 | Adjustable vacuum pump impeller locking device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410110692.5A CN103821761B (en) | 2014-03-25 | 2014-03-25 | Adjustable vacuum pump impeller locking device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103821761A CN103821761A (en) | 2014-05-28 |
| CN103821761B true CN103821761B (en) | 2016-04-06 |
Family
ID=50756991
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410110692.5A Active CN103821761B (en) | 2014-03-25 | 2014-03-25 | Adjustable vacuum pump impeller locking device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103821761B (en) |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2266749B (en) * | 1992-05-07 | 1995-09-06 | Falmer Investment Ltd | Centrifugal pumps |
| US5971704A (en) * | 1997-04-23 | 1999-10-26 | Toyo Pumps North America Corporation | Device for adjusting the running clearance of an impeller |
| CN2446315Y (en) * | 2000-09-27 | 2001-09-05 | 苏考文 | Eugle adjustable vane of mine aixal-flow fan |
| EP2119917A1 (en) * | 2008-05-16 | 2009-11-18 | IHC Holland IE B.V. | Connection arrangement, and centrifugal pump comprising such arrangement |
| CN202001368U (en) * | 2011-03-08 | 2011-10-05 | 宁波风机有限公司 | Blade width regulating mechanism |
| CN203743057U (en) * | 2014-03-25 | 2014-07-30 | 山东双轮埃姆科泵业有限公司 | Adjustable locking device for impeller of vacuum pump |
-
2014
- 2014-03-25 CN CN201410110692.5A patent/CN103821761B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN103821761A (en) | 2014-05-28 |
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Address after: No. 6 Dongxin Road, Huancui Tourist Resort, Weihai City, Shandong Province, 264200 Patentee after: Shandong Emco Pump Industry Co.,Ltd. Country or region after: China Address before: No. 6 Dongxin Road, Huancui Tourist Resort, Weihai City, Shandong Province, 264200 Patentee before: SHANDONG SHUANGLUN EMMECOM PUMPS Co.,Ltd. Country or region before: China |