CN101566149A - Master-auxiliary vane pump and stator decompression method - Google Patents
Master-auxiliary vane pump and stator decompression method Download PDFInfo
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- CN101566149A CN101566149A CNA2009100984156A CN200910098415A CN101566149A CN 101566149 A CN101566149 A CN 101566149A CN A2009100984156 A CNA2009100984156 A CN A2009100984156A CN 200910098415 A CN200910098415 A CN 200910098415A CN 101566149 A CN101566149 A CN 101566149A
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Abstract
The invention relates to a master-auxiliary vane pump and a stator decompression method, being designed to solve the technical problems of the prior vane pump or master-auxiliary vane pump of inconvenient maintenance, large working pressure of vanes and short service life. The vane pump is characterized in that a second O-shaped ring is arranged at the joint of a front cover and a rear cover; a first O-shaped ring and a second polyfluortetraethylene retainer ring are arranged at the joint of a pump core and the front cover; the pump core is inserted in a pump body by a pin; a transmission shaft is supported in the pump body by a rolling bearing and a sliding bearing on a rear oil-distributing disc; and a front oil-distributing disc is in a taper shape and is in clearance fit with the front cover. In the stator decompression method, a middle pressure chamber is formed between the master vane and the auxiliary vane in a cavity between a rotor and a stator, and the width of the auxiliary vane is 1/3-1/4 of that of the master vane. The invention has simple structure, reasonable design, convenient maintenance, assembly and disassembly of the pump core, low working pressure of vanes, long service life, obvious effect of the decompression method and low pressing force of stators, thereby being suitable for transferring various fluids and improving like products.
Description
Technical field
The present invention relates to oil hydraulic pump, is a kind of complex master and auxiliary vane pump and stator decompression method.
Background technique
At present, the oil hydraulic pump product of selling on the market is a lot, generally is divided into gear pump, vane pump and plunger pump according to its structural type.Wherein, the blade in the vane pump transfer pilot trench contacts with pump case (track ring), with the liquid of suction by the oil-feed side pressure to the oil extraction side.CN86203316U as the Chinese patent literature publication, June 11 1987 day for announcing, model utility title " high pressure vane pump ", this vane pump has Auxiliary valves, in rated pressure 200 Palestine and Israels, oil suction district root of blade pressure can be regulated with Auxiliary valves in the course of the work at any time easily, generally has only 4% to 6% of working pressure, and the root of blade pressure ratio vane tip pressure of any angular orientation is big slightly in 360 degree scopes.But this vane pump is a single vane pump, and the impacting force of its stator is bigger, and blade working pressure is bigger, influences its working life.
For overcoming the problems referred to above, some vane pumps are set to double-leaf.Patent No. ZL200720186800.2 as the Chinese patent literature publication, November 5 2008 notice of authorization day, model utility title " a kind of embedded vane pump of motor ", the embedded vane pump of motor of this vane pump three of drive motor, higher pressure subsidiary parent form vane pump, centrifugal service pump independently element become one from structure.But its structure is comparatively complicated, comparatively inconvenience of maintenance and loading and unloading.
Summary of the invention
For overcoming above-mentioned deficiency, the present invention seeks to provides a kind of complex master and auxiliary vane pump and stator decompression method to related domain, solves the technical problem that existing vane pump or complex master and auxiliary vane pump inconvenient maintenance, blade working pressure are big, working life is short.Specifically realize by the following technical solutions.
A kind of complex master and auxiliary vane pump, this vane pump comprise transmission shaft, rotor, stator, inlet port, oil drain out, primary and secondary blade, preceding oil distribution casing, back oil distribution casing, rolling bearing, protecgulum, bonnet; Protecgulum and bonnet connect and compose the pump housing, and stator, rotor, primary and secondary blade pass are crossed the preceding oil distribution casing of screws clamp, the back oil distribution casing is formed the pump core; Forward and backward lid and forward and backward oil distribution casing are provided with into and out of hydraulic fluid port and runner.The pump core places in the pump housing, and transmission shaft and pump housing joint are provided with outside framework oil seal, and rolling bearing is fixed in the pump housing by first circlip, and rolling bearing and protecgulum joint are provided with pad; Transmission shaft is fixed in rolling bearing by second circlip, and transmission shaft is connected with coupling by flat key; Have the mounting flange face to be connected with the oil pump bearing on the protecgulum, coupling drives the rotor rotation, and liquid enters the pump housing from inlet port, discharges the pump housing from oil drain out.Its key points in design is that described pump core is plugged in the pump housing by pin, and transmission shaft is supported in the pump housing by the sliding bearing on rolling bearing, the back oil distribution casing; First circlip, second circlip play the axially locating effect, have made things convenient for the maintenance and the loading and unloading of pump.
Described protecgulum and bonnet joint are provided with the 2nd O shape circle, pump core and protecgulum joint are provided with O shape circle, the second teflon back-up ring, the one O shape circle, the 2nd O shape circle, the second teflon back-up ring seal, and above-mentioned O shape circle and teflon back-up ring have made things convenient for the maintenance and the loading and unloading of pump core.
Oil distribution casing is tapered before described, preceding oil distribution casing and protecgulum Spielpassung.Preceding oil distribution casing and protecgulum Placement are the plug-in type structure, only need change the pump core when normally keeping in repair, and have made things convenient for maintenance of pump core and loading and unloading.
The described first teflon back-up ring, the second teflon back-up ring, O shape circle place in the step hole of protecgulum.High and low pressure oil pocket in the pump housing is separated, again the pump core is fixed in the protecgulum of the pump housing, made things convenient for the maintenance and the loading and unloading of pump core.
According to above-mentioned structural feature, two oil-discharging cavities and two oil sucting cavity symmetric arrangement on the forward and backward oil distribution casing.Be provided with blades and female blade in the groove that its stator decompression method main points are described rotors, female blade is close to the inside diameter surface of stator, forms intermediate pressure cavity between blades and the female blade, and the blades width is 1/3～1/4 of female width of blade; Pressure oil is during by the runner between rotor and the stator, the bottom of the primary and secondary blade P1 that is stressed, the top of the female blade P1 that is stressed, the top of the blades P2 that is stressed; Female vane tip and bottom be subjected to force direction opposite, the power that the primary and secondary blade acts on the stator is that F=b * t * (p2-p1), t is a vane thickness.At oil suction district primary and secondary blade the impacting force of stator has been reduced by 2/3～3/4 than single blade.
Come to nothing for preventing blade in the oil extraction district, described intermediate pressure cavity is provided with the throttling damping with being communicated with of oil-discharging cavity in the oil duct.The pressure of intermediate pressure cavity was a little more than the pressure that acts on female vane tip when the throttling damping was entad moved blade, guarantee blade when the oil extraction district and stator fit tightly.
The present invention is simple in structure, and is reasonable in design, pump core maintenance, easy to loading and unloading, and blade working pressure is little, long service life, the stator decompression method effect is obvious, and the impacting force of stator is little, is suitable for the conveying of various liquid, and the improvement of like product.
Description of drawings
Fig. 1 is a fundamental diagram of the present invention, and P is a sense of rotation among the figure, and black arrow is the oil suction runner, and white arrow is the oil extraction runner, and t is a vane thickness.
Fig. 2 is the working principle sectional view of Fig. 1, and P1 is that female blade bottom and top are subjected to force direction among the figure, and P2 is that blades is subjected to force direction, and b is the blades width, and B is female width of blade.
Fig. 3 is a structural drawing of the present invention, has made A-A among the figure and has analysed and observe.
Fig. 4 is the A-A sectional view of Fig. 3.
Above figure number and title: 1, transmission shaft, 2, rotor, 3, stator, 4, pressure compensation opening, 5, the pressure oil duct, 6, inlet port, 7, oil drain out, 8, the primary and secondary blade, 801, blades, 802, female blade, 9, intermediate pressure cavity, 10, preceding oil distribution casing, 11, outside framework oil seal, 12, rolling bearing, 13, first circlip, 14, the first teflon back-up ring, 15, the one O shape circle, 16, protecgulum, 17, the second teflon back-up ring, 18, the 2nd O shape circle, 19, screw, 20, bonnet, 21, back oil distribution casing, 22, second circlip, 23, pad, 24, flat key, 25, sliding bearing, 26, pin.
Embodiment
Mode of execution is an example with structure of the present invention and working principle in conjunction with the accompanying drawings.Its structure as shown in Figure 3, Figure 4, protecgulum 16 connects and composes the pump housing with bonnet 20, has the mounting flange face to be connected with the oil pump bearing on the protecgulum, usefulness outside framework oil seal 11 seals between protecgulum and the transmission shaft.Oil distribution casing 10, back oil distribution casing 21 were formed the pump core before rotor 2, stator 3, primary and secondary blade 8 clamped by screw 19, and pump core and protecgulum are the plug-in type structure, and the pump core is plugged in the pump housing by pin 26.Between oil distribution casing and the protecgulum, seal before the first teflon back-up ring 14, O shape circle 15, the second teflon back-up ring 17, the 2nd O shape circle 18 lay respectively at, high and low pressure oil pocket in the pump housing is separated.Transmission shaft is supported by the sliding bearing 25 on rolling bearing 12 and the back oil distribution casing, and rolling bearing and protecgulum joint are provided with pad 23, and transmission shaft is connected with coupling by flat key 24, drives the rotor rotation.First circlip 13, second circlip 22 are respectively rolling bearing, transmission shaft plays the axially locating effect.Forward and backward lid and forward and backward oil distribution casing are provided with into and out of hydraulic fluid port and runner, and O shape circle, the second teflon retaining ring sealing and separate into and out of hydraulic fluid port and runner.
Its working principle as shown in Figure 1 and Figure 2, female blade slides in the groove of rotor, when transmission shaft 1 drove the rotor rotation, female blade was close to the inside diameter surface of stator, formed the several sealed volume between preceding oil distribution casing, back oil distribution casing, stator, rotor, the female blade.Because the curved profile of diameter of stator bore causes these sealed volume periodically to change, when sealed volume increases, form negative pressure, atmospheric pressure is pressed into the fluid in the fuel tank from inlet port 6, when sealed volume reduced, the fluid that has more was forced out from oil drain out 7.Rotor whenever circles, and female blade is reciprocal twice in groove, finishes the process of twice oil suction, oil extraction, so also be double-acting vane pump.Two oil-discharging cavities and two oil sucting cavity symmetric arrangement on its forward and backward oil distribution casing act on the mutual balance of epitrochanterian radial hydraulic pressure, so the long service life of transmission shaft and rolling bearing.
The rotor blade groove bottom leads to oil drain out, therefore after setting up the oil extraction high pressure, at oil extraction district vane tip also is high pressure oil, so hydraulic coupling is in a basic balance, have only blade to do the centrifugal force of circular movement and inertial force, the friction acting in conjunction that blade radially moves in blade groove, produce less impacting force and make blade be close to stator inner surface with rotor.Vane tip is a low pressure oil in the oil suction district, and blade bottom is a high pressure oil, and blade is close to stator inner surface with sizable impacting force, and vane tip slides at stator inner surface with higher relative velocity again, and operating conditions is very abominable.Reducing oil suction district blade is to improve the vane pump working pressure and the key in working life to the impacting force of stator.
Complex master and auxiliary vane pump is equipped with female blade 802 and blades 801 in the groove of rotor.Mother, blades be slide relative freely, and epitrochanterian pressure compensation opening 4 equates female vane tip and bottom liquid pressure.Oil extraction pressure preceding oil distribution casing of process and rotor pressure oil duct 5 are passed to the intermediate pressure cavity 9 of mother and sons' blade, and as not considering centrifugal force, inertial force effect, as seen from Figure 1, Figure 2, the power that the primary and secondary blade acts on the stator is: F=b * t * (p2-p1).
In the oil suction district, p1=0, then F=t * b * p2; In the oil extraction district, so p1=p2 is F=0.And blades width b is 1/3～1/4 of female width of blade B, so the primary and secondary blade has reduced by 2/3～3/4 to the impacting force of stator than single blade in the oil suction district.
Simultaneously,, come to nothing, on the oil duct that is communicated with intermediate pressure cavity and oil-discharging cavity, the throttling damping is set for preventing blade at oil extraction district F=0.The pressure of intermediate pressure cavity was a little more than the pressure that acts on female vane tip when the primary and secondary blade entad moved, make female blade when the oil extraction district and stator fit tightly.
Claims (6)
1, a kind of complex master and auxiliary vane pump, this vane pump comprise that this vane pump comprises transmission shaft (1), rotor (2), stator (3), inlet port (6), oil drain out (7), primary and secondary blade (8), preceding oil distribution casing (10), back oil distribution casing (21), rolling bearing (12), protecgulum (16), bonnet (20); Protecgulum and bonnet connect and compose the pump housing, and stator, rotor, primary and secondary blade pass are crossed screw (19) and clamped preceding oil distribution casing (10), back oil distribution casing (21) composition pump core; The pump core places in the pump housing, and transmission shaft and pump housing joint are provided with outside framework oil seal (11), and rolling bearing is fixed in the pump housing by first circlip (13), and rolling bearing and protecgulum joint are provided with pad (23); Transmission shaft is fixed in rolling bearing by second circlip (22), and transmission shaft is connected with coupling by flat key (24); It is characterized in that described pump core is plugged in the pump housing by pin (26); Transmission shaft (1) is supported in the pump housing by the sliding bearing (25) on rolling bearing (12), the back oil distribution casing (21); Be provided with blades (801) and female blade (802) in the groove of rotor (2), female blade is close to the inside diameter surface of stator (3).
2, complex master and auxiliary vane pump according to claim 1 is characterized in that described protecgulum (16) and bonnet (20) joint are provided with the 2nd O shape circle (18); Pump core and protecgulum joint are provided with O shape circle (15), the second teflon back-up ring (17).
3, complex master and auxiliary vane pump according to claim 1, it is characterized in that described before oil distribution casing (10) tapered, preceding oil distribution casing and protecgulum (16) Spielpassung.
4, complex master and auxiliary vane pump according to claim 1 is characterized in that the described first teflon back-up ring (14), the second teflon back-up ring (17), O shape circle (15) place in the step hole of protecgulum (16).
5, a kind of stator decompression method of complex master and auxiliary vane pump, this vane pump comprise transmission shaft (1), rotor (2), stator (3), inlet port (6), oil drain out (7), primary and secondary blade (8), preceding oil distribution casing (10), back oil distribution casing (21), rolling bearing (12), protecgulum (16), bonnet (20); Protecgulum and bonnet connect and compose the pump housing, and stator, rotor, primary and secondary blade pass are crossed screw (19) and clamped preceding oil distribution casing (10), back oil distribution casing (21) composition pump core; The pump core places in the pump housing, and transmission shaft and pump housing joint are provided with outside framework oil seal (11), and rolling bearing is fixed in the pump housing by first circlip (13); Transmission shaft is fixed in rolling bearing by second circlip (22), and transmission shaft is connected with coupling by flat key (24); Two oil-discharging cavities and two oil sucting cavity symmetric arrangement on the forward and backward oil distribution casing, this method is characterised in that in the groove of described rotor (2) and is provided with blades (801) and female blade (802), female blade is close to the inside diameter surface of stator (3), form intermediate pressure cavity (9) between blades and the female blade, blades width (b) is 1/3～1/4 of female width of blade (B); Pressure oil is during by the runner between rotor and the stator, the bottom of the primary and secondary blade P1 that is stressed, the top of the female blade P1 that is stressed, the top of the blades P2 that is stressed; Female vane tip and bottom be subjected to force direction opposite, the power that the primary and secondary blade acts on the stator is that F=b * t * (p2-p1), t is a vane thickness.
6, as the stator decompression method of complex master and auxiliary vane pump as described in the claim 1,5, this method is characterised in that described intermediate pressure cavity (9) and being communicated with of oil-discharging cavity are provided with the throttling damping in the oil duct.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2009100984156A CN101566149A (en) | 2009-05-07 | 2009-05-07 | Master-auxiliary vane pump and stator decompression method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2009100984156A CN101566149A (en) | 2009-05-07 | 2009-05-07 | Master-auxiliary vane pump and stator decompression method |
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| CN101566149A true CN101566149A (en) | 2009-10-28 |
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| CNA2009100984156A Pending CN101566149A (en) | 2009-05-07 | 2009-05-07 | Master-auxiliary vane pump and stator decompression method |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101975163A (en) * | 2010-10-15 | 2011-02-16 | 浙江台州先顶液压有限公司 | Hydraulic vane pump |
| CN102094816A (en) * | 2011-01-30 | 2011-06-15 | 浙江凯斯特液压有限公司 | Master and auxiliary pump |
| CN102877842A (en) * | 2012-10-11 | 2013-01-16 | 北方重工集团有限公司 | High pressure water flow conveying mechanism of cutting reducer of heading machine |
| CN103114993A (en) * | 2012-12-05 | 2013-05-22 | 浙江台州先顶液压有限公司 | Step blade type hydraulic machinery |
| CN103727028A (en) * | 2013-12-18 | 2014-04-16 | 宁波市鄞州金本机械有限公司 | Double-acting impeller pump |
| CN103982445A (en) * | 2014-05-14 | 2014-08-13 | 浙江大学宁波理工学院 | Liquid conveying system with single sealing surface |
| CN106662101A (en) * | 2014-08-19 | 2017-05-10 | 东京计器株式会社 | Vane pump |
| CN108894911A (en) * | 2018-07-13 | 2018-11-27 | 哈尔滨理工大学 | A kind of primary and secondary blade construction of hydraulic motor |
| CN117212143A (en) * | 2023-10-31 | 2023-12-12 | 福力德泰克(上海)泵业有限公司 | Vane pump capable of inhibiting clearance backflow |
-
2009
- 2009-05-07 CN CNA2009100984156A patent/CN101566149A/en active Pending
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101975163A (en) * | 2010-10-15 | 2011-02-16 | 浙江台州先顶液压有限公司 | Hydraulic vane pump |
| CN102094816A (en) * | 2011-01-30 | 2011-06-15 | 浙江凯斯特液压有限公司 | Master and auxiliary pump |
| CN102877842A (en) * | 2012-10-11 | 2013-01-16 | 北方重工集团有限公司 | High pressure water flow conveying mechanism of cutting reducer of heading machine |
| CN103114993B (en) * | 2012-12-05 | 2015-11-18 | 胡凯 | A kind of step blade type hydraulic machinery |
| CN103114993A (en) * | 2012-12-05 | 2013-05-22 | 浙江台州先顶液压有限公司 | Step blade type hydraulic machinery |
| CN103727028A (en) * | 2013-12-18 | 2014-04-16 | 宁波市鄞州金本机械有限公司 | Double-acting impeller pump |
| CN103727028B (en) * | 2013-12-18 | 2016-04-13 | 宁波市鄞州金本机械有限公司 | A kind of double-action wing pump |
| CN103982445A (en) * | 2014-05-14 | 2014-08-13 | 浙江大学宁波理工学院 | Liquid conveying system with single sealing surface |
| CN103982445B (en) * | 2014-05-14 | 2016-04-20 | 浙江大学宁波理工学院 | A kind of liquid conveying system of single sealing surface |
| CN106662101A (en) * | 2014-08-19 | 2017-05-10 | 东京计器株式会社 | Vane pump |
| CN106662101B (en) * | 2014-08-19 | 2018-12-04 | 东京计器株式会社 | Vane pump |
| CN108894911A (en) * | 2018-07-13 | 2018-11-27 | 哈尔滨理工大学 | A kind of primary and secondary blade construction of hydraulic motor |
| CN117212143A (en) * | 2023-10-31 | 2023-12-12 | 福力德泰克(上海)泵业有限公司 | Vane pump capable of inhibiting clearance backflow |
| CN117212143B (en) * | 2023-10-31 | 2024-02-13 | 福力德泰克(上海)泵业有限公司 | Vane pump capable of inhibiting clearance backflow |
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Open date: 20091028 |