CN105526174A - Mechanism for reducing quantity of oil accumulated in pump cavity of vacuum pump - Google Patents
Mechanism for reducing quantity of oil accumulated in pump cavity of vacuum pump Download PDFInfo
- Publication number
- CN105526174A CN105526174A CN201610083160.6A CN201610083160A CN105526174A CN 105526174 A CN105526174 A CN 105526174A CN 201610083160 A CN201610083160 A CN 201610083160A CN 105526174 A CN105526174 A CN 105526174A
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- CN
- China
- Prior art keywords
- pump
- drainage hole
- oil drainage
- oil
- vacuum pump
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- 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.)
- Pending
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C29/00—Component parts, details or accessories of pumps or pumping installations, not provided for in groups F04C18/00 - F04C28/00
- F04C29/02—Lubrication; Lubricant separation
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Applications Or Details Of Rotary Compressors (AREA)
Abstract
The invention discloses a mechanism for reducing a quantity of oil accumulated in a pump cavity of a vacuum pump. The mechanism comprises a pump body and an oil discharge hole; the oil discharge hole is formed in the pump body, and is communicated with the pump cavity of the pump body; an oil baffle plate matched with the oil discharge hole is arranged on the pump body; and a ventilation tank for communicating the oil discharge hole with external atmosphere is formed in the pump body. The mechanism for reducing the quantity of the oil accumulated in the pump cavity of the vacuum pump is added with the small-section ventilation tank in the oil discharge hole of the pump body, so that the atmosphere and the pump cavity are communicated through a small-section channel; negative pressure in the pump cavity is timely reduced and eliminated after stop to prevent oil pumping to the pump cavity due to the negative pressure, so that the oil accumulated in the pump cavity is reduced; and the mechanism is simple, easy to realize and skillful in design, effectively reduces the quantity of the oil accumulated in the pump cavity of the vacuum pump, and guarantees working reliability and stability of the vacuum pump.
Description
Technical field
The present invention relates to a kind of automobile vacuum pump, especially relate to a kind of mechanism for reducing vacuum pump pump chamber inner product oil mass.
Background technique
Automobile vacuum pump in the course of the work rotor drives slide plate to rotate, pump chamber extraction zone volume strengthens, form negative pressure, air in vacuum booster/gas holder is drawn into vacuum pump by tracheae, exhaust area volume reducing simultaneously, air pressure increases, and air and machine oil are discharged by the air outlet of vacuum pump discharges valve.
But vacuum pump operationally, in order to lubricate, sealing and cooling, need, from vacuum pump filler opening, the machine oil of motor oil outlet is introduced pump chamber, when vacuum pump stops operating, negative pressure (close to vacuum state) is there is in pump chamber, lubricant oil now in engine oil channel is under pump chamber suction function, can be pumped in pump chamber, many lubricant oil can be gathered in pump chamber, these lubricant oil gathered can increase slide plate resistance when vacuum pump starts, increase the starting torque of vacuum pump, especially when low temperature, oil body can increase, these lubricant oil gathered are under vacuum pump low-temperature cool starting, the resistance that slide plate bears can be increased considerably, the fracture of slide plate may be caused under extreme case, cause failure of vacuum pump.
Summary of the invention
The object of the present invention is to provide a kind of mechanism for reducing vacuum pump pump chamber inner product oil mass, it effectively can reduce vacuum pump pump chamber inner product oil mass, to solve the problems referred to above that in prior art, automobile vacuum pump exists.
For reaching this object, the present invention by the following technical solutions:
A kind of mechanism for reducing vacuum pump pump chamber inner product oil mass, it comprises the pump housing and oil drainage hole, described oil drainage hole is opened on the described pump housing and with the pump chamber of the pump housing and is connected, described oil drainage hole is coordinated to be provided with grease baffle on the described pump housing, wherein, the described pump housing offers the vent slot for being connected with outside atmosphere by oil drainage hole.
Especially, described oil drainage hole is arc-shaped structure, described grease baffle coordinates described oil drainage hole to be set to circular arc, its head end is fixed on the described pump housing by set screw, tail end is posted by the tail end of described oil drainage hole, and described vent slot is opened in the tail end of described oil drainage hole and its notch exposes outside described grease baffle.
Especially, described oil drainage hole is arc-shaped structure, and described grease baffle coordinates described oil drainage hole to be set to circular arc, and its head end is fixed on the described pump housing by set screw, tail end is posted by the tail end of described oil drainage hole, and described vent slot is opened on the pump housing of described oil drainage hole either side.
Especially, the cross section of described vent slot is any one of square, circular arc or circle.
Beneficial effect of the present invention is, compared with prior art the oil drainage hole place of the described mechanism for reducing vacuum pump pump chamber inner product oil mass on the pump housing increases the vent slot of small bore, make air and pump chamber through by the passage of small bore, reduce in time after a shutdown, eliminate negative pressure in pump chamber, prevent to pump chamber because negative pressure is pumped, thus reduce the long-pending oil of pump chamber, not only structure is simple, is easy to realize; And design ingenious, effectively reduce vacuum pump pump chamber inner product oil mass, ensure that the reliable and stable work of vacuum pump.
Accompanying drawing explanation
Fig. 1 is the structural representation of the non-mounting block oil sheet of the mechanism for reducing vacuum pump pump chamber inner product oil mass that the specific embodiment of the invention 1 provides;
Fig. 2 is the structural representation of the mounting block oil sheet for reducing vacuum pump pump chamber inner product oil mass that the specific embodiment of the invention 1 provides;
Fig. 3 is the structural representation of the non-mounting block oil sheet of the mechanism for reducing vacuum pump pump chamber inner product oil mass that the specific embodiment of the invention 2 provides;
Fig. 4 is the structural representation of the mounting block oil sheet of the mechanism for reducing vacuum pump pump chamber inner product oil mass that the specific embodiment of the invention 2 provides;
Fig. 5 is the structural representation of the non-mounting block oil sheet of the mechanism for reducing vacuum pump pump chamber inner product oil mass that the specific embodiment of the invention 3 provides;
Fig. 6 is the structural representation of the mounting block oil sheet of the mechanism for reducing vacuum pump pump chamber inner product oil mass that the specific embodiment of the invention 3 provides.
In figure:
1, the pump housing; 2, oil drainage hole; 3, grease baffle; 4, set screw; 5, vent slot; 6, position-limited edge; 7, restraining groove.
Embodiment
Technological scheme of the present invention is further illustrated by embodiment below in conjunction with accompanying drawing.
Embodiment one:
Refer to shown in Fig. 1 and Fig. 2, in the present embodiment, a kind of mechanism for reducing vacuum pump pump chamber inner product oil mass comprises the pump housing 1 and oil drainage hole 2, described oil drainage hole 2 to be opened on the described pump housing 1 and to be connected with the pump chamber of the pump housing, described oil drainage hole 2 is coordinated to be provided with grease baffle 3 on the described pump housing 1, described oil drainage hole 2 is arc-shaped structure, described grease baffle 3 coordinates described oil drainage hole 2 to be also set to circular arc, the head end of described grease baffle 3 is fixed on the described pump housing 1 as fixed end by set screw 4, tail end is posted by the tail end of described oil drainage hole 2 as on-fixed end, the pump housing 1 of described oil drainage hole 2 tail end offers the vent slot 5 that notch exposes the small bore outside described grease baffle 3, oil drainage hole 2 is connected with outside atmosphere by described vent slot 5, thus the pump chamber of the pump housing 1 is communicated with outside atmosphere.
The head end of described grease baffle 3 is extended with the position-limited edge 6 be convenient to grease baffle 3 and installed and locate laterally, coordinates described position-limited edge 6 to offer restraining groove 7 on the described pump housing 1.The cross section of described vent slot 5 can be set to any one of square, circular arc or circle as required.
Embodiment two:
Refer to shown in Fig. 3 and Fig. 4, the present embodiment is from the difference of embodiment one: vent slot 5 to offer position different, other structures are all identical.In the present embodiment, described oil drainage hole 2 is arc-shaped structure, and vent slot 5 is opened on the pump housing 1 outside described oil drainage hole 2, and is positioned at the head end position of described oil drainage hole 2.
Embodiment three:
Refer to shown in Fig. 5 and Fig. 6, the present embodiment is from the difference of embodiment one: vent slot 5 to offer position different, other structures are all identical.In the present embodiment, described oil drainage hole 2 is arc-shaped structure, and vent slot 5 is opened on the pump housing 1 inside described oil drainage hole 2, and is positioned at the head end position of described oil drainage hole 2.
Above embodiment has just set forth basic principle of the present invention and characteristic; the present invention does not limit by above-mentioned example; without departing from the spirit and scope of the present invention, the present invention also has various change and change, and these changes and change all fall in the claimed scope of the invention.Application claims protection domain is defined by appending claims and equivalent thereof.
Claims (4)
1. the mechanism for reducing vacuum pump pump chamber inner product oil mass, it comprises the pump housing and oil drainage hole, described oil drainage hole is opened on the described pump housing and with the pump chamber of the pump housing and is connected, described oil drainage hole is coordinated to be provided with grease baffle on the described pump housing, it is characterized in that, the described pump housing offering the vent slot for being connected with outside atmosphere by oil drainage hole.
2. the mechanism for reducing vacuum pump pump chamber inner product oil mass according to claim 1, it is characterized in that, described oil drainage hole is arc-shaped structure, described grease baffle coordinates described oil drainage hole to be set to circular arc, its head end is fixed on the described pump housing by set screw, tail end is posted by the tail end of described oil drainage hole, and described vent slot is opened in the tail end of described oil drainage hole and its notch exposes outside described grease baffle.
3. the mechanism for reducing vacuum pump pump chamber inner product oil mass according to claim 1, it is characterized in that, described oil drainage hole is arc-shaped structure, described grease baffle coordinates described oil drainage hole to be set to circular arc, its head end is fixed on the described pump housing by set screw, tail end is posted by the tail end of described oil drainage hole, and described vent slot is opened on the pump housing of described oil drainage hole either side.
4. according to any one of claim 1-3 for the mechanism for reducing vacuum pump pump chamber inner product oil mass, it is characterized in that, the cross section of described vent slot is any one of square, circular arc or circle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610083160.6A CN105526174A (en) | 2016-02-05 | 2016-02-05 | Mechanism for reducing quantity of oil accumulated in pump cavity of vacuum pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610083160.6A CN105526174A (en) | 2016-02-05 | 2016-02-05 | Mechanism for reducing quantity of oil accumulated in pump cavity of vacuum pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105526174A true CN105526174A (en) | 2016-04-27 |
Family
ID=55768604
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610083160.6A Pending CN105526174A (en) | 2016-02-05 | 2016-02-05 | Mechanism for reducing quantity of oil accumulated in pump cavity of vacuum pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105526174A (en) |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2138709Y (en) * | 1992-09-17 | 1993-07-21 | 徐宗富 | Automatic control protective net of Roots vacuum pump |
| CN2410489Y (en) * | 2000-02-25 | 2000-12-13 | 许文增 | Air ball valve |
| CN101203677A (en) * | 2005-07-07 | 2008-06-18 | 厄利孔莱博尔德真空技术有限责任公司 | Rotary vacuum pump |
| CN201535247U (en) * | 2009-07-31 | 2010-07-28 | 台州市星光真空设备制造有限公司 | Automatic inflation device for rotary-vane type vacuum pump |
| CN202579194U (en) * | 2012-04-27 | 2012-12-05 | 吴斌华 | Vacuum pump |
| CN202732342U (en) * | 2012-05-30 | 2013-02-13 | 长城汽车股份有限公司 | Single-vane vacuum pump for engine |
| CN202756248U (en) * | 2012-06-18 | 2013-02-27 | 浙江飞越机电有限公司 | Secondary oil return preventing structure of rotary-vane vacuum pump |
| CN204458361U (en) * | 2015-01-28 | 2015-07-08 | 浙江神工真空设备制造有限公司 | The vacuum pump of built-in oil mist eliminator |
| CN205401134U (en) * | 2016-02-05 | 2016-07-27 | 无锡明治泵业有限公司 | A mechanism for falling rough vacuum pump pump chamber inner product oil mass |
-
2016
- 2016-02-05 CN CN201610083160.6A patent/CN105526174A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2138709Y (en) * | 1992-09-17 | 1993-07-21 | 徐宗富 | Automatic control protective net of Roots vacuum pump |
| CN2410489Y (en) * | 2000-02-25 | 2000-12-13 | 许文增 | Air ball valve |
| CN101203677A (en) * | 2005-07-07 | 2008-06-18 | 厄利孔莱博尔德真空技术有限责任公司 | Rotary vacuum pump |
| CN201535247U (en) * | 2009-07-31 | 2010-07-28 | 台州市星光真空设备制造有限公司 | Automatic inflation device for rotary-vane type vacuum pump |
| CN202579194U (en) * | 2012-04-27 | 2012-12-05 | 吴斌华 | Vacuum pump |
| CN202732342U (en) * | 2012-05-30 | 2013-02-13 | 长城汽车股份有限公司 | Single-vane vacuum pump for engine |
| CN202756248U (en) * | 2012-06-18 | 2013-02-27 | 浙江飞越机电有限公司 | Secondary oil return preventing structure of rotary-vane vacuum pump |
| CN204458361U (en) * | 2015-01-28 | 2015-07-08 | 浙江神工真空设备制造有限公司 | The vacuum pump of built-in oil mist eliminator |
| CN205401134U (en) * | 2016-02-05 | 2016-07-27 | 无锡明治泵业有限公司 | A mechanism for falling rough vacuum pump pump chamber inner product oil mass |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20160427 |