CN203743057U - Adjustable locking device for impeller of vacuum pump - Google Patents
Adjustable locking device for impeller of vacuum pump Download PDFInfo
- Publication number
- CN203743057U CN203743057U CN201420134082.4U CN201420134082U CN203743057U CN 203743057 U CN203743057 U CN 203743057U CN 201420134082 U CN201420134082 U CN 201420134082U CN 203743057 U CN203743057 U CN 203743057U
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- CN
- China
- Prior art keywords
- impeller
- pump
- adjusting bolt
- vacuum pump
- regulating block
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn - After Issue
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- Applications Or Details Of Rotary Compressors (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The utility model provides an adjustable locking device for an impeller of a vacuum pump, and relates to the technical field of vacuum pumps. The vacuum pump comprises a pump body, a pump shaft, the impeller, an inlet and outlet pump body, an opening disk, a connecting disk and a motor. The adjustable locking device is characterized in that the pump shaft is sleeved with the impeller, the impeller can slide axially, a flat key is arranged between the impeller and the pump shaft, an adjusting bolt is arranged at the front end of the pump shaft, the adjusting bolt and the pump shaft are coaxial, and the middle of the adjusting bolt is sleeved with an annular adjusting block which is in thread connection with the impeller; an operation hole is formed in the front end of the annular adjusting block, a locking nut is arranged on the position, in front of the annular adjusting block, of the adjusting bolt, a locking groove is formed in the middle of the front side of the impeller, a sealing nut is arranged inside the locking groove and on the front portion of the adjusting bolt, and a sealing ring is arranged between the sealing nut and the impeller. The adjustable locking device is simple in structure and convenient to adjust, and the vacuum pump is high in performance, good in stability and long in service life.
Description
Technical field
The present invention relates to vacuum pump technology field, say in detail it is a kind of simple in structure, easy to adjust, 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, mouthful 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 and between the pump housing and the pump housing, to be provided with a mouthful dish, mouthful dish is provided with inlet hole and the exhaust port that suction port and relief opening are communicated with pump body, mouthful coils with the import and export pump housing to be fixedly connected with.Pump shaft is located in the pump housing, impeller is axially fixed on pump shaft through impeller nut, between impeller and pump shaft, is provided with flat key, and impeller often rotates a circle and realizes once to the suction of gas and discharge process, land is arranged on pump housing rearward end, as the link between rear end cover and the pump housing and motor.Between impeller and land, be provided with mechanical seal, motor is arranged on land rear side, and electric machine main shaft is connected with pump shaft.The impeller of this vacuum pump in the pump housing, land and mouthful dish between, gap between impeller and mouthful dish is extremely important, the too little friction easily causing between impeller and mouthful dish in gap, and gap is too large, easily cause pressurized gas and suck the backflow between gas, causing pump performance to decline.Existing vacuum pump, the gap between impeller and mouthful dish cannot regulate, it is determined by production size, and due to error, easily there is problem of friction or excesssive gap in the two, and vacuum pump performance is low.When vacuum pump operation a period of time, because the reasons such as wearing and tearing, corrosion cause gap between impeller and mouthful dish while changing, the working efficiency of vacuum pump is step-down gradually, and 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 simple in structure, 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 above-mentioned the deficiencies in the prior art employing 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, mouthful dish, land and motor, it is characterized in that impeller can be set on pump shaft in axial sliding, between impeller and pump shaft, be provided with flat key, pump shaft front end is provided with the adjusting bolt coaxial with pump shaft, adjusting bolt middle part (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, in the adjusting bolt of annular regulating block front side, establishes locking nut, and middle part, impeller front side is provided with locking groove, and locking groove is interior, the anterior sealing nut that is provided with of adjusting bolt, between sealing nut and impeller, is provided with seal ring.
Adjusting bolt described in the present invention is stud bolt, and stud bolt one side is connected with spindle thread.
When the present invention assembles at vacuum pump, rotate annular regulating block, because annular regulating block is threaded with impeller, can regulate the axial position of impeller on pump shaft, be adjusted to rotation lock nut behind appropriate location, annular regulating block is pressed on pump shaft front end, re-uses sealing nut annular regulating block, locking nut and adjusting bolt are sealed in the impeller of pump shaft front end, prevent that annular regulating block, locking nut from getting rusty rust extremely.Sealing nut and annular regulating block coordinate play simultaneously by impeller shaft to positioning and locking the function on main shaft.Can regulate accurately the gap between impeller and mouthful dish, avoid friction, improve vacuum pump performance high and working life.When vacuum pump operation a period of time, because the reasons such as wearing and tearing, corrosion cause gap between impeller and mouthful dish while changing, can regulate the gap between impeller and mouthful dish, continue use after improving its performance.The present invention is simple in structure, easy to adjust, and 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, the import and export pump housing 7, mouthful dish 11, land 2 and motor 1, it is characterized in that impeller 5 can be set on pump shaft 4 in axial sliding, between impeller and pump shaft, be provided with transmission flat key, pump shaft 4 front ends are provided with the adjusting bolt coaxial with pump shaft 6, adjusting bolt 6 middle parts are free to rotate is arranged with annular regulating block 10, annular regulating block 10 is provided with outside thread, impeller is provided with the internal thread matching with annular regulating block, and annular regulating block is threaded with impeller; Annular regulating block front end is provided with handle hole, and instrument is inserted in handle hole and rotates annular regulating block rotation, can impeller move axially on pump shaft.The adjusting bolt of annular regulating block front side is provided with locking nut 8, middle part, impeller front side is provided with locking groove, locking groove is interior, the anterior sealing nut 9 that is provided with of adjusting bolt, sealing nut 9 is sealed in annular regulating block, locking nut and adjusting bolt in the impeller of pump shaft front end, prevents that annular regulating block, locking nut from getting rusty rust extremely.As can be seen from the figure, adjusting bolt is stud bolt, and stud bolt one side is connected with spindle thread, and opposite side and locking nut and sealing nut are in mating connection.Be convenient to handling, easy to maintenance, quick.Between described sealing nut and impeller, establish seal ring.
When the present invention assembles at vacuum pump, rotate annular regulating block, because annular regulating block is threaded with impeller, can regulate the axial position of impeller on pump shaft, be adjusted to rotation lock nut behind appropriate location, annular regulating block is pressed on pump shaft front end, re-uses sealing nut annular regulating block, locking nut and adjusting bolt are sealed in the impeller of pump shaft front end, prevent that annular regulating block, locking nut from getting rusty rust extremely.Sealing nut and annular regulating block coordinate by impeller shaft to positioning and locking on main shaft, can prevent in using process loosening.The present invention can determine and regulate the gap between impeller and mouthful dish accurately, avoids friction, improves vacuum pump performance high and working life.When vacuum pump operation a period of time, because the reasons such as wearing and tearing, corrosion cause gap between impeller and mouthful dish while changing, can regulate the gap between impeller and mouthful dish by rotating annular regulating block, continue use after improving its performance.The present invention is simple in structure, easy to adjust, the axial position of energy precise positioning impeller, and 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, mouthful dish, land and motor, it is characterized in that impeller can be set on pump shaft in axial sliding, between impeller and pump shaft, be provided with flat key, pump shaft front end is provided with the adjusting bolt coaxial with pump shaft, and adjusting bolt middle part is arranged with annular regulating block, 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 adjusting bolt of annular regulating block front side is provided with locking nut, and middle part, impeller front side is provided with locking groove, and locking groove is interior, the anterior sealing nut that is provided with of adjusting bolt.
2. adjustable vacuum pump impeller locking device according to claim 1, is characterized in that described adjusting bolt is stud bolt, and stud bolt one 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 |
|---|---|---|---|
| CN201420134082.4U CN203743057U (en) | 2014-03-25 | 2014-03-25 | Adjustable locking device for impeller of vacuum pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420134082.4U CN203743057U (en) | 2014-03-25 | 2014-03-25 | Adjustable locking device for impeller of vacuum pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203743057U true CN203743057U (en) | 2014-07-30 |
Family
ID=51342865
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420134082.4U Withdrawn - After Issue CN203743057U (en) | 2014-03-25 | 2014-03-25 | Adjustable locking device for impeller of vacuum pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203743057U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103821761A (en) * | 2014-03-25 | 2014-05-28 | 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 CN201420134082.4U patent/CN203743057U/en not_active Withdrawn - After Issue
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103821761A (en) * | 2014-03-25 | 2014-05-28 | 山东双轮埃姆科泵业有限公司 | Adjustable locking device for impeller of vacuum pump |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20140730 Effective date of abandoning: 20160406 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |