CN2578565Y - Vane rotary plunger pump with forced air cooling - Google Patents
Vane rotary plunger pump with forced air cooling Download PDFInfo
- Publication number
- CN2578565Y CN2578565Y CN 02224347 CN02224347U CN2578565Y CN 2578565 Y CN2578565 Y CN 2578565Y CN 02224347 CN02224347 CN 02224347 CN 02224347 U CN02224347 U CN 02224347U CN 2578565 Y CN2578565 Y CN 2578565Y
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- China
- Prior art keywords
- pump
- vacuum
- oil
- belt wheel
- lubrication
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- Expired - Fee Related
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Abstract
The utility model relates to a rotary vane roller pump having a forced air cooling function, which is used for manufacturing a vacuum pump and a vacuum pressure combination air pump. Radiating fins which are used for expanding heat dispersion area are cast on the outer surface of the rotary vane roller pump, and a belt wheel at the front end of the pump is additionally provided with a fan for forcibly cooling a pump body by air. The pump uses a double-circular-arc inner cavity to eliminate the idle space of the pump and to enhance the limiting vacuum degree of the pump. A pin valve type oil dripping cup is arranged on the pump, so that the effect of boundary lubrication in the pump can be achieved. The pump has the advantages of simple structure, low cost, good energy-saving effect and no pollution.
Description
Affiliated technical field
The utility model belongs to displacement pump, can be used for making vacuum pump and vacuum-pressure composite air pump.
Background technique
Existing sliding vane rotary vacuum pump and blade roller-type pump (patent No. 93233179.3, ZL99232727.x) are main by the pump housing, rotor, front and rear cover with cylindrical body is installed in the combined type blade that is assembled in the blade Baltimore groove forms.A rotor is installed in pump chamber prejudicially, rotor cylindrical and pump chamber internal surface are tangent, pump housing inner chamber is single cylindrical hole, there is clearance space in the Line of contact of rotor and pump chamber internal surface to the wedge angle area between the relief opening, gas herein is in can not discharge pump chamber under the drain pressure and be extruded in the suction chamber by the gap of blade by the rotor and the pump housing, thereby the existence of clearance space reduced the ultimate vacuum of pump, and increased power consumption.
The oil seal type sliding vane rotary vacuum pump is to fill clearance space by the oil in the pumping cylinder to discharge the interior gas of clearance space, reaches the purpose that improves pump degree of vacuum, but still because of discharging the many consumed powers of extending oil.
Under the coarse vacuum operating conditions, a large amount of air enters and causes the pump exhaust inlet oil spout in the pump easily.So oil lubrication vacuum pump and air pump have oil and gas separating system.In order to prevent oil spout, also production oil-free lubrication vacuum pump and oil-free lubrication vacuum-pressure composite air pump now, but because the existence of the clearance space of pump, reduced the limiting vacuum of pump, oil-free lubrication has simultaneously also increased surface friction drag.
The structure of the air pump product of domestic present production is identical with the product structure of its happy company in the Germany mostly, and pump is a direct connection, because of the rotating speed height of pump, thus the temperature rise of pump, the power consumpiton height.
Summary of the invention
It is big that the purpose of this utility model is to exist clearance space to reduce the ultimate vacuum and the surface friction drag of pump at the oil-free lubrication pump, monoblock pump temperature rise, the shortcoming that power consumption is big and the two circular arc inner chamber rotary vane roller pumps of forced air cooling that design.This pump can not only be eliminated the clearance space of pump, improves the limiting vacuum of pump, and main is the temperature rise that reduces pump, reduces power consumpiton.
The technological scheme that its technical problem that solves the utility model adopts is:
1. improve the limiting vacuum of pump
On the basis of blade roller-type pump, the single cylindrical cavity of the pump housing is designed to two circular arc inner chambers, wherein one section arc diameter equals root diameter, and rotor has one section circular arc to contact with the pump housing rather than tangent during the pump assembling.Increase the sealing between the intake and exhaust chamber of pump like this, eliminated the clearance space of pump, improved the ultimate vacuum of pump.
2. reduce surface friction drag
(2.1) needle valve drop-feed oil cup or wick formula lubricating cup are installed on the pump housing, are guaranteed that pump inside forms boundary lubrication and do not have the mist of oil discharge when pump work.
(2.2) utilize self-lubricating composite or oil-laden powder metallurgical material to make blade, dress up combined type roller blade with group of rollers again.
3. low pump temperature falls
(3.1) done radiating fin at pump housing outer surface and be used to enlarge heat diffusion area, the belt wheel that adopts the band fan is to pump housing forced air cooling.
(3.2) motor and pump direct connection not adopts the belt wheel transmission, and low pump temperature falls in the rotating speed of having a mind to reduce pump, but the volume and weight of pump is all less than monoblock pump (adopt the method that increases eccentricity of rotor, increase the pumping speed of pump).
4. install the structure of fan on the belt wheel additional
(4.1) with synchronizing jugged belt wheel transmission, it is configured to:
(4.1.1) on the end face of synchronizing jugged belt wheel, be cast with some blades.
(4.1.2) fan blade is installed on the end face of profile of tooth belt wheel.
(4.2) use the Vee pulley V transmission, it is configured to:
(4.2.1) on the wheel rim end face of Vee pulley V, be cast with some blades.
(4.2.2) the oval spoke of belt pulley is made into the shape of fan blade.
(4.2.3) the oval spoke of belt pulley is made into the shape of fan blade, on the end face of wheel rim, casts out some blades simultaneously.
(4.2.4) fan blade is installed on the disc.
5. when the ultimate vacuum of pump was had relatively high expectations, pump can adopt oil lubrication and sealing, and this moment, the pump planted agent installed oil and gas separating system.
Because the blade roller-type pump belongs to displacement pump, its working principle is that gas is sucked, and discharges after compression.According to the thermal engineering theory, the process of calming the anger is more near constant temperature process (temperature rise of pump is low), and wasted work is just few more.The utility model is owing to adopted the rotating speed that reduces pump, and lubricating in forced air cooling and the pump is so the temperature rise of pump is lower.Adopt two circular arc inner chamber pump housings, eliminated the clearance space of pump when oil-free lubrication, so the ultimate vacuum of pump improves.Because vacuum pump is in operation process, along with the reduction of the air-breathing pressure of pump, actual pumping speed descends gradually, and during near final presure, the actual pumping speed of pump will go to zero at inlet pressure.So the raising of the ultimate vacuum of pump, the pumping speed when in fact having strengthened pump work has improved the working efficiency of pump, has also reduced the power consumpiton of pump.
The beneficial effects of the utility model are to improve the limiting vacuum of pump, reduce the temperature rise of pump, reduce the power that pump consumed.
Description of drawings
Below in conjunction with drawings and Examples the utility model is further specified.
Accompanying drawing 1 is the longitudinal sectional view of the agent structure of the utility model pump, and Fig. 2 is the A-A sectional view of Fig. 1.
1. fan blade among the figure, 2. belt wheel, 3. rotor shaft, the 4. pump housing, 5. radiating fin, 6. lubricating cup, the 7. little circular arc that equates with root diameter, 8. roller type combination blade.
Embodiment
The little circular arc (7) that one of processing and rotor radius equate in the single cylindrical hole of pump housing inner chamber, the length of little circular arc is advisable with the clearance space of eliminating rotor body and pump.At the pump housing (4) a needle valve drop-feed oil cup (6) is installed upward and is regulated oil inlet quantity, guarantee lubricating in the pump, but pump not oil spout again.On the rotor shaft (3) of pump belt pulley (2) is installed, is cast with some blades (1) on the wheel rim end face of belt pulley, be cast with axial cooling fin (5) on pump housing outer surface, when belt pulley rotated, blade was to pump housing forced air cooling.
Claims (1)
1. air blast cooling rotary vane roller pump, comprise rotor, the pump housing, front and rear cover and cylindrical body is installed in the combined type blade that is assembled in the blade Baltimore groove, be used to make vacuum pump and vacuum-pressure composite air pump, pump adopts oil lubrication and oil-free lubrication, it is characterized in that: pump adopts the belt wheel transmission, install fan additional on the belt wheel on the rotor shaft of pump, pump housing inner chamber is two circular arc inner chambers, drop-feed oil cup can be installed carry out drop lubrication.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02224347 CN2578565Y (en) | 2002-06-26 | 2002-06-26 | Vane rotary plunger pump with forced air cooling |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02224347 CN2578565Y (en) | 2002-06-26 | 2002-06-26 | Vane rotary plunger pump with forced air cooling |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2578565Y true CN2578565Y (en) | 2003-10-08 |
Family
ID=33701784
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02224347 Expired - Fee Related CN2578565Y (en) | 2002-06-26 | 2002-06-26 | Vane rotary plunger pump with forced air cooling |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2578565Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104863854A (en) * | 2015-06-08 | 2015-08-26 | 江苏梅花机械有限公司 | Improved vacuum pump for automobile |
-
2002
- 2002-06-26 CN CN 02224347 patent/CN2578565Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104863854A (en) * | 2015-06-08 | 2015-08-26 | 江苏梅花机械有限公司 | Improved vacuum pump for automobile |
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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 |