CN2532276Y - High-speed slide piece vacuum pump - Google Patents
High-speed slide piece vacuum pump Download PDFInfo
- Publication number
- CN2532276Y CN2532276Y CN 01257147 CN01257147U CN2532276Y CN 2532276 Y CN2532276 Y CN 2532276Y CN 01257147 CN01257147 CN 01257147 CN 01257147 U CN01257147 U CN 01257147U CN 2532276 Y CN2532276 Y CN 2532276Y
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- China
- Prior art keywords
- vacuum pump
- sliding vane
- vane vacuum
- communicated
- pump
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- Expired - Fee Related
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- Applications Or Details Of Rotary Compressors (AREA)
Abstract
Disclosed is a high-speed sliding vane vacuum pump which comprises a pump body, a rotor with sliding vanes, a pumping hole and an escape hole. At least one exhaust groove is arranged on the sliding vane vacuum pump body; one end of the exhaust groove is communicated with a compression work area of the sliding vane pump and the other end is communicated with the escape hole. An oil gas loop is arranged in the pump body, one end of the oil gas loop is communicated with a rotating shaft sealed oil cavity and the other end is communicated with an exhaust pipe; a check valve is arranged in the oil gas loop and is communicated with the exhaust pipe. The casing of the sliding vane vacuum pump is made from aluminum alloy die cast and the inner cavity is formed by abrasion-resistant metal powder. The utility model which has not the process for air compressing can overcome the faults including the breaking of the joint parts of a straight-toothed spline shaft, the abrasion of a pump rotor internal tooth spline, the breaking of the pump rotor, the damage to the motor by the lubricating oil in the pump cavity because the lubricating oil is leaked under high pressure extrusion and passes through a rubber oil seal washer. The utility model which has the advantages of high efficiency, low energy consumption, simple structure, convenient production and low cost is applicable to use in fit with a car generator.
Description
Technical field:
The utility model relates to a kind of vacuum pump, particularly relates to a kind of high speed sliding vane vacuum pump.
Background technique:
Sliding vane vacuum pump (Sliding Vane Rotary Vacuum Pump) is on nineteen seventies begins to appear at automobile by Japanese import.The sliding vane vacuum pump that this automobile current generator is equipped with, main effect is for improving the skidding performance of automobile, improved traveling security, alleviating driver's labor intensity, make motor car engine be in temporary transient idling or flame-out after, still can guarantee the repeatedly positive braking braking of automobile.This safe braking effect mainly is to provide more than or equal to 0.075MPa degree of vacuum energy assisted braking system after relying on vacuum pump to deflate, and guarantees the traffic safety braking.
This generator sliding vane vacuum pump structure is: by the work that is connected with the inner spline gear of pump rotor of the straight spline tooth axle of generator amature, the part of sliding vane vacuum pump is made up of the pump housing, rotor, slide plate, pump bottom seat, one-way valve joint, oil inlet pipe screw, exhaust joint and attachment screw etc.The rubber oil sea circle is housed in case the lubricant oil of on-slip sheet vacuum pump enters in the generator at commutator end bearing support bracket.
The working principle of this pump is that the rotor and the pump housing that four groups of slide plates are housed are eccentrics, the slide plate that embeds in the rotor rollaway nest is close to pump housing inwall, the rotor of band slide plate changes the volume between the interior two groups of slide plates of pump chamber when rotated, whenever rotate a circle reach bleed, the circulation of compression, exhaust, finish the sliding vane vacuum pump work of bleeding.The lubricant oil of sliding vane vacuum pump enters sliding vane vacuum pump by oil inlet pipe screw current limliting, plays lubricating component and seal action.
This kind generator sliding vane vacuum pump is used on the automobile, bear the jolting and will change of vibration, high temperature and driving of motor at 1000-4500, even be higher than 5000 and change in the no standard rotating speeds and work, bear the pressure etc. that increases sharply at a high speed, cause the following fault of generator sliding vane vacuum pump easily: 1, straight-tooth splined shaft joint fracture, 2, pump rotor internal spline wearing and tearing, 3, pump rotor breaks apart, 4, lubricant oil passes the rubber oil sea circle because of height extrusion seepage and damages generator etc. in the pump chamber.
Find out failure cause and solve the fault way from the working procedure principle analysis of sliding vane vacuum pump.By 90 degree, four equal five equilibrium sliding vane vacuum pump rotors is to reach the sliding vane vacuum pump working principle by the flexible locational space that changes of adjacent two slide plates: A takes out in the district full gas, B district pressurized gas, C has arranged gas in the district, and the D district enters bleeds, and key point is to change 90 ° to B zone position air compression process by the A district.By calculating as can be known, B district compression volume has only 1/5th of A district, and its air pressure is more than 5 times of A district.When high rotating speed, from gas pressure intensity formula P=1/3nmv
2, v wherein
2Speed rises to the principal element of pressure.The highpressure that this high speed produces is strong, and press physics pressure air characteristics: " liquids and gases are to all directions transmission." above failure cause is owing to there is the process of an air compression during sliding vane vacuum pump work.
Summary of the invention:
Technical problem to be solved in the utility model provides and a kind ofly can overcome above-mentioned fault, and efficient height, energy consumption are low, and simple in structure, easily manufactured high speed sliding vane vacuum pump.
The technical solution adopted in the utility model is such: be provided with an air vent on the sliding vane vacuum pump pump housing at least, air vent one end is communicated with the compression work district, and the other end is communicated with relief opening.
Owing on the sliding vane vacuum pump pump housing, be provided with an air vent at least, air vent one end is communicated with the compression work district, the other end is communicated with relief opening, make A, the pump chamber that B takes out in two districts full air in advance about 180 ° just enter exhaust condition, no gas compression processes, arranged gas in the C district, the D district enters bleeds, the real work program is only bled, the exhaust work cyclic program overcomes sliding vane vacuum pump and produce the highpressure thump when high speed operation, thereby has eliminated the factor that above-mentioned fault takes place, so the utility model does not have the pressurized gas process, can overcome above-mentioned fault, the efficient height, energy consumption is low, and simple in structure, easily manufactured, cheap.
Description of drawings:
Fig. 1 is the utility model structural front view;
Fig. 2 is the utility model pump housing inwall vent groove configuration schematic representation;
Fig. 3 is the utility model oil gas loop schematic representation.
Embodiment:
Referring to Fig. 1, on sliding vane vacuum pump pump bottom seat 8, be provided with an air vent 4 at least, air vent 4 one ends are communicated with the compression work district, and the other end is communicated with relief opening 3.The pump chamber that makes A, B two districts take out full air shifts to an earlier date about 180 ° and just enters exhaust condition, no gas compression state, and C has arranged gas in the district, and the D district enters bleeds, and the real work program is only bled, the exhaust work cyclic program.Overcome sliding vane vacuum pump and when high speed operation, produced the highpressure thump, eliminated the factor that breaks down.
Referring to Fig. 2, described air vent 4 also can be located on the sliding vane vacuum pump pump housing 1 inwall 9, and the one end is communicated with the compression work district, and the other end is communicated with relief opening 3.
Referring to Fig. 3, in the pump housing 1, be provided with an oil gas loop 10, oil gas loop 10 1 ends and vacuum pump rotating shaft 16 are communicated with seal oil chamber 13 between the generator 15, one end is communicated with outlet pipe 7, the safety check of being made up of steel ball 11, spring 12 that leads to outlet pipe 7 14 is housed in oil gas loop 10, press by oil gas loop 10 inflow outlet pipes 7 by the oil gas that the high speed sliding vane vacuum pump produces, can avoid passing rubber oil sea circle 17, stop to damage generator 15 phenomenons because of oil gas extrusion seepage.
The pump housing 1 shell adopts aluminum alloy die casting, and with the antifriction metal (AFM) powder forming pump housing 1 inner chamber, people's exquisite appearance, the meticulous perfect embodiment of endoplasm technology are given in a kind of like this combination.
The utility model is adapted to and the supporting use of automobile current generator.
Claims (5)
1, a kind of high speed sliding vane vacuum pump, the rotor (5), bleeding point (2), the relief opening (3) that comprise the pump housing (1), band slide plate (6), it is characterized in that: on described sliding vane vacuum pump pump bottom seat (8), be provided with an air vent (4) at least, described air vent (4) one ends are communicated with the compression work district of described sliding vane vacuum pump, and the other end is communicated with described relief opening (3).
2, a kind of high speed sliding vane vacuum pump according to claim 1 is characterized in that: described air vent (4) can be located on the inwall (9) of the described sliding vane vacuum pump pump housing (1).
3, a kind of high speed sliding vane vacuum pump according to claim 1 and 2, it is characterized in that: in the described sliding vane vacuum pump pump housing (1), be provided with an oil gas loop (10), described oil gas loop (10) one ends and vacuum pump rotating shaft (16) are communicated with seal oil chamber (13) between the generator (15), one end is communicated with outlet pipe (7), and the safety check (14) that leads to outlet pipe (7) is housed in oil gas loop (10).
4, a kind of high speed sliding vane vacuum pump according to claim 3 is characterized in that: the safety check of described safety check (14) for being made up of steel ball (11), spring (12).
5, a kind of high speed sliding vane vacuum pump according to claim 1 and 2 is characterized in that: the described sliding vane vacuum pump pump housing (1) shell adopts aluminum alloy die casting, and the described sliding vane vacuum pump pump housing (1) inner chamber is by the antifriction metal (AFM) powder forming.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01257147 CN2532276Y (en) | 2001-10-12 | 2001-10-12 | High-speed slide piece vacuum pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01257147 CN2532276Y (en) | 2001-10-12 | 2001-10-12 | High-speed slide piece vacuum pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2532276Y true CN2532276Y (en) | 2003-01-22 |
Family
ID=33665976
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 01257147 Expired - Fee Related CN2532276Y (en) | 2001-10-12 | 2001-10-12 | High-speed slide piece vacuum pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2532276Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101120174B (en) * | 2005-02-16 | 2010-12-01 | 大丰工业株式会社 | Vane pump |
| CN102270893A (en) * | 2011-07-08 | 2011-12-07 | 奇瑞汽车股份有限公司 | Oil return structure of power generator provided with vacuum pump |
| CN104879267A (en) * | 2015-06-15 | 2015-09-02 | 宁波市润桥工业设计有限公司 | Hydro-generator |
-
2001
- 2001-10-12 CN CN 01257147 patent/CN2532276Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101120174B (en) * | 2005-02-16 | 2010-12-01 | 大丰工业株式会社 | Vane pump |
| CN102270893A (en) * | 2011-07-08 | 2011-12-07 | 奇瑞汽车股份有限公司 | Oil return structure of power generator provided with vacuum pump |
| CN104879267A (en) * | 2015-06-15 | 2015-09-02 | 宁波市润桥工业设计有限公司 | Hydro-generator |
| CN104879267B (en) * | 2015-06-15 | 2019-04-09 | 宁波市润桥工业设计有限公司 | A kind of hydrogenerator |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |