CN202746199U - Hydraulic control mechanism - Google Patents
Hydraulic control mechanism Download PDFInfo
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- CN202746199U CN202746199U CN201220447929.5U CN201220447929U CN202746199U CN 202746199 U CN202746199 U CN 202746199U CN 201220447929 U CN201220447929 U CN 201220447929U CN 202746199 U CN202746199 U CN 202746199U
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Abstract
The utility model discloses a hydraulic control mechanism which is used for controlling a blade in a blade pump to slide on a rotor in a radial direction and solves the problems that the blade still stretches out of the outer side of the rotor when the existing common blade pump does not need to work so that the energy of the blade pump is greatly consumed. The blade pump comprises a shell, a stator and the rotor, wherein the rotor is rotatably arranged in the stator and the rotor is internally provided with a plurality of blade grooves in the radial direction and the blade grooves are internally and rotatably provided with blades; parts of the blades can stretch out of the radial outer side of the rotor or can be retracted into the rotor; a cavity is formed between the rotor and the stator; the cavity is provided with a fluid suction region, a fluid compression region and a blade retraction region; and the shell is internally provided with a chamber communicated with the cavity and the chamber is communicated with the outside through a flow inlet and a flow outlet. The hydraulic control mechanism structurally comprises a communication chamber and an external flow channel; and the hydraulic control mechanism selectively introduces pressure fluid into the chamber through the flow channel and ensures that the blades are stably retracted back into the rotor.
Description
Technical field
The utility model relates to a kind of hydraulic control for the vane pump Leaf is controlled along the slip on the rotor radial.
Background technique
Be used for the pump that convection cell carries out pump pressure and mainly contain three kinds of structural types, i.e. plunger pump, gear pump and vane pump, vane pump is widely used at many mechanical fields because it has good service behaviour.
Existing blade pump structure mainly comprises stator and rotor, and rotor is located in the stator rotationally, is formed with cavity between stator and the rotor.The internal face of stator is approximate ellipsoidal, thereby is formed with fluid suction area, fluid compression district and blade retraction district in cavity.In rotor, radially be provided with some blade grooves along it, in each blade groove, be provided with slidably a slice blade.After rotor rotated, under the effect of centrifugal force, the external lateral portion of blade can extend in this cavity.
(application number: disclose a kind of a kind of high-pressure hydraulic pressure vane pump of liquid capacity-fixed formula machinery 201110059277.8), be for solving in the existing similar VQ vane pump because the sudden changes in pressure in transition zone causes female blade technical problem that noise is larger with stator inner surface generation impact designs to Chinese invention patent application.This vane pump comprises bonnet, rear bearing sheet, bimetal side plate, blades, female blade, stator, rotor, front end panel, protecgulum, transmission shaft, its rotor is provided with blade groove, and the inclined hole that communicates with this blade groove, the bimetal side plate is provided with circular arc elongated slot, circular oil groove, and wherein two adjacent circular oil groove connect the arc lubrication groove; Its design main points are that described circular arc elongated slot two ends are provided with the transition slot that diminishes gradually, and described two adjacent circular oil groove connect the arc lubrication groove separately, and these two arc lubrication grooves are separated mutually.The utility model reasonable in design, pressure stability during work, pressure pulsation reduces, and the noise of pump obviously reduces, and has improved working pressure and the working life of pump.
Rotor in this hydraulic vane pump is as long as in rotation process, and under the effect of centrifugal force, the blade that is positioned at cavity inner fluid suction area and fluid compression zone position place all can extend into cavity, thereby the fluid that is positioned at cavity is promoted.But in the application of reality, as hydraulic jacking mechanism weight top lift put in place after, because itself being provided with the structure that limits the hydraulic oil reverse flow in the hydraulic jacking mechanism, sometimes not needing hydraulic vane pump to continue propelling fluid and flow to the top and lift on the direction of heavy thing.In the hydraulic system of vehicle, also such problem can appear sometimes.In these above-mentioned situations, if vane pump still in work with remaining valid, can increase energy consumption on the one hand, on the other hand also owing to the hydraulic oil in the whole hydraulic pipe line stops to flow, blade can continue to stir to a fraction of hydraulic oil that is detained in the vane pump cavity, this can bring variation to the physical property of this part hydraulic oil, raises such as reduced viscosity, temperature, and then the temperature of vane pump is raise.Physical parameter difference in the whole hydraulic oil system is larger, if things go on like this, can have influence on the whole service life of hydraulic oil.If by the mode that clutch is set rotor is stopped operating in above-mentioned these situations, then can make blade pump structure complicated on the one hand, also can have influence on the other hand the transmission of vane pump rotor, the stability when rotor rotates can not guarantee.
On the other hand, this hydraulic vane pump is in when work, and blade is the outside that reaches rotor under the effect of centrifugal force.Because vane pump carries out pump pressure for convection cell, generally be that the higher liquid of wet goods viscosity is carried out pump pressure, if in the oily gap that is immersed between blade and the blade groove, this can have influence on blade and normally stretch out in rotor, thereby can have influence on the working stability of vane pump.
Summary of the invention
For overcoming defects, the utility model technical issues that need to address are: a kind of hydraulic control is provided, be used for to the vane pump Leaf slip on rotor radial and control, thereby so that vane pump can be effectively saved the work energy consumption.
For solving above-mentioned technical problem, the technical solution of the utility model: a kind of hydraulic control, be used for the blade movement of vane pump is controlled, described vane pump comprises housing, stator and rotor, rotor is located in the stator rotationally, radially be provided with some blade grooves in the rotor, be provided with slidably blade in the blade groove, blade can partly reach the rotor radial outside or be retracted in the rotor; Form cavity between rotor and the stator, this cavity has fluid suction area, fluid compression district and blade retraction district, be provided with the chamber that communicates with described cavity in the housing, chamber is by the influent stream mouth and go out head piece and communicate with the external world, it is characterized in that, structure comprises links up chamber and extraneous runner, and hydraulic control passes into pressure fluid in the chamber selectively by runner stably is retracted in the rotor blade.
The indication fluid generally refers to liquid herein, refers to especially oil or water.
Rotor is cylindrical, the internal face of stator is approximate ellipse, described fluid suction area and fluid compression district are formed on the two end part of described cavity, rotor is when normal rotation, the high pressure oil that passes in the blade groove bottom, and under the effect of the suffered centrifugal force of blade, blade can extend in the cavity at fluid suction area and compressing area, and can the conflict inwall of cavity of the outer end of blade.Under the effect that reaches rotor outside blade, the fluid suction area can form a negative pressure, and fluid is inhaled in the fluid suction area.Under the further impetus of blade, fluid can be pressed into the fluid compression district, and the pressure of fluid obtains increasing.Blade retraction district is formed on the medium position place of cavity, and herein, the gap between rotor and the stator is very little, and under curved cavity inner wall effect, blade can be fully retracted in the rotor.
Do not need to have been pressurizeed by vane pump with the working medium in the vane pump hydraulic system, then this hydraulic control starts, pressure fluid with certain pressure enters in the cavity, and pressure fluid is pressed into blade in the rotor, and blade can stably be fully retracted in the rotor.If described working medium needs when pressurized, hydraulic control releasing work, at centrifugal force or act under the pressure fluid effect of root of blade, blade can in time extend in the cavity at described fluid suction area and fluid compression zone position place.When vane pump did not need work, the pressure of pressure fluid should guarantee to make blade stably to be retracted in the rotor, and namely pressure fluid should be able to overcome the suffered centrifugal force of rotor rotation process Leaf, and this can achieve the goal by limited test.
Under the vane pump normal working, chamber is because influent stream mouth and go out head piece and be in open mode, and chamber opens wide.When chamber is air-tight state, need to be provided with switching mechanism at influent stream mouth and the outside that goes out head piece, cutting off communicating between influent stream mouth and the fuel tank, and cut off out head piece and communicate with fuel-displaced pipeline in the hydraulic system.Chamber also can be opening-wide state, needs this moment to pass into the pressure fluid with certain pressure in chamber, in order to blade is pressed in the rotor.
After hydraulic control starts, the fluid applied force owing to be under pressure on the blade, blade is retracted in the rotor, centrifugal force is not enough to overcome this power and makes the blade that is retracted in the rotor be thrown out of the outside of rotor, rotor is under the idling conditions, and the energy that consumes in the rotor rotation process of this moment is low.The pressure of pressure fluid can be determined according to the actual needs.
As preferably, described runner with go out head piece or the influent stream mouth communicates.Runner directly with go out head piece or the influent stream mouth communicates, be conducive to simplify the structure of this hydraulic control, make things convenient for the setting to runner.
As preferably, the external fluid control device of described runner.Go out in the situation that head piece communicates with described at runner, when needing to pass into pressure fluid in chamber, adjust fluid control device, the high-pressure spray cognition that vane pump pumps enters in the chamber.After in vane pump, being full of pressure fluid, the closing control switch.For whether being full of pressure fluid in the vane pump, can judging by pressure transducer is set in vane pump, or be determined by the time that control switch is opened.For ease of realizing automation control, control switch generally is solenoid valve.
As preferably, described housing is split-type structural, and it is to be by the longitudinal section that " front cover of [" shape and rear end cover snap together and form, and the face of being fastened between front cover and the rear end cover is ladder surface, and described oil duct is located on the front cover.This is so that housing is convenient to moulding and assembling, and the sealability between the two end cap accesses assurance.
As preferably, the external fluid control device of described runner.The agent structure of this fluid control device is oil pump, and oil pump is connected with runner by pipeline.In the application of reality, oil pump can be always in running order on, also can be after pumping into a certain amount of pressure fluid, to quit work.If oil pump is when quitting work, generally control switch need to be set between oil pump and the runner, so that pressure fluid is trapped in the vane pump in the formed confined space, and give the pressure that blade continues.
As preferably, also comprise passage, passage is linked up the bottom of blade groove and the outside of vane pump, and passage is used for linking to each other with fluid control device.This fluid control device is generally pump type hydraulic mechanism, is used for passing into pressure fluid toward the bottom of blade groove, so that blade can in time reach the outside of rotor when needed, to guarantee the working stability of vane pump.
As preferably, the bottom of described blade groove is provided with chamber, the end, and the truncation surface size in chamber, the end is greater than the thickness of blade groove.This is convenient to the outside that pressure fluid can stably be released blade rotor.
As preferably, rotor is run through along rotor axial in chamber, the described end, is respectively equipped with oil-feed oil distribution casing and fuel-displaced oil distribution casing in the two ends of rotor in housing, and described passage passes the inside of oil-feed oil distribution casing; End face at fuel-displaced oil distribution casing is provided with annular groove, and groove is towards chamber, the end, and groove is corresponding with the position in chamber, the end.By two oil distribution casings being set, convenient setting to respective line.End face at fuel-displaced oil distribution casing arranges described groove, is convenient to the whole inner end that pressure fluid is full of blade, so that blade can reach with correct attitude the outside of rotor.And, when the needs blade stably is retracted in the rotor, also be convenient to the release to end cavity pressure fluid.
As preferably, described passage comprises that the outer circumferential face of being located at the oil-feed oil distribution casing is provided with circular groove, is located at L shaped duct in the oil-feed oil distribution casing, is located at going out oil groove, being located at the liquid entering hole on the housing of annular on the oil-feed oil distribution casing interior edge face, it is corresponding with the position in chamber, the end to go out oil groove, chamber, the end, goes out oil groove, duct, circular groove, liquid entering hole and communicates.Passage is formed by described these structures, and is simple in structure, is convenient to processing, and the communication seals between each structure is good.
Compared with prior art, the beneficial effects of the utility model are embodied in: because vane pump in the course of the work, under the restriction effect of this hydraulic control, epitrochanterian blade can reach selectively the rotor outside or be fully retracted in the rotor, working medium in the hydraulic system is not needing when pressurized, blade can be fully retracted in the rotor, rotor can be to continue to rotate under the state of idle running, the little energy that rotor under the idling conditions consumes, the work energy consumption that is conducive to save vane pump.Vane pump can with equipment on power mechanism directly be connected, and do not need realize to connect by the middle transition structure, be conducive to simplify the linkage structure between vane pump and the power mechanism.When the hydraulic system on equipment fulfiled assignment, blade can not produce hydraulic oil and continue anxious strong stirring, and this is conducive to the maintenance of hydraulic oil physical property, thereby can effectively guarantee the working life of hydraulic oil.Vane pump is in rotation process, and it is little to generate heat, and this has improved the working life of vane pump on the one hand, and is low to the liquid sealing structure seal request in the vane pump on the other hand.Need vane pump when work, pass into pressure fluid by described passage bottom the blade groove after, can impel blade in time stably to reach the outside of rotor, the working stability of vane pump is guaranteed.
Description of drawings
Fig. 1 is the longitudinal sectional view with the vane pump of the utility model hydraulic control.
Fig. 2 is along the A-A direction sectional view among Fig. 1.
Fig. 3 blade reaches the structural representation in the rotor outside, and the oblique line among the figure is the pressure fluid for injecting partly.
Fig. 4 is that blade is retracted into the structural representation in the rotor, and the oblique line among the figure is the pressure fluid for injecting partly.
Embodiment
The utility model hydraulic control is applied on the vane pump, is used for the vane pump Leaf and controls epitrochanterian radially sliding.The blade pump structure comprises housing, stator 12 and rotor 17.The both end sides of housing is respectively equipped with influent stream mouth 14 and goes out head piece 8, and influent stream mouth 14 is used for and fuel tank communicates, and goes out head piece 8 and is used for communicating with the fluid pipeline of hydraulic system.
Be arranged in the stator 12 to rotor 17 coaxial space, rotor 17 can be in stator 12 interior rotations, and rotor 17 and stator 12 all are arranged in the housing.Radially be provided with some blade grooves 16 along it on rotor 17, the opening of blade groove 16 is positioned on the outer circumferential face of rotor 17.Be provided with a slice blade 11 in each blade groove 16, blade 11 is equal to or slightly less than blade groove 16 along the axial size of rotor 17 along rotor 17 axial sizes.When rotor 17 rotates, under the effect of centrifugal force, the extended outside to rotor 17 of the outer end portion of blade 11.Be formed with cavity 15 between rotor 17 and the stator 12, the similar ellipse of the inwall of stator 12, in cavity 15, have fluid suction area, fluid compression district and blade 11 retraction districts, fluid suction area and fluid compression district are formed on the upper/lower terminal section of cavity 15, and blade 11 retraction districts are formed on the arranged on left and right sides at cavity 15 medium position places.At fluid suction area and place, fluid compression district, the interval between the outer circumferential face of rotor 17 and stator 12 internal faces is relatively large, at blade 11 retraction districts, the interval less between rotor 17 outer circumferential faces and stator 12 internal faces.When blade 11 moved to blade 11 retraction district, under the effect of stator 12 internal faces, blade 11 retracted in the rotor 17.
Be formed with chamber in the housing, chamber communicates with cavity 15 between stator 12 and the rotor 17.On fuel-displaced pipeline, and fuel tank and go out between the influent stream mouth 14 to be provided with switching mechanism, so that flowing of cutting-off liquid force feed in appropriate circumstances, thereby make chamber be in airtight state.
Be provided with hydraulic control on the vane pump, when not needing the vane pump convection cell to carry out supercharging, hydraulic control passes into pressure fluid in chamber, and under the effect of this pressure fluid, blade 11 stably retracts in the rotor 17.
Housing is split-type structural, and it is to be by two truncation surfaces that " front cover 1 and the rear end cover 5 of [" shape form by snapping together in opposite directions, and the snapping junction plane between front cover 1 and the rear end cover 5 is ladder surface, and operated by rotary motion has seal ring between this ladder surface.
Hydraulic control comprises the runner 2 of being located on front cover 1 sidewall, and runner 2 is linked up chamber and the external world of enclosure interior, and runner 2 is positioned at described influent stream mouth 14 1 sides.Runner 2 external pressure control mechanisms, runner 2 can be and go out head piece 8 and communicate, also can be to communicate with influent stream mouth 14, when runner 2 goes out head piece 8 and communicates, the high pressure liquid force feed that goes out head piece 8 interior outflows can enter in runner 2 in the cavity 15, this moment runner 2 and go out between the head piece 8 to be provided with control switch; Runner 2 also can be to communicate with external fluid control device, and the pressure fluid that fluid control device produces enters in the cavity 15 by runner 2.
For guaranteeing that when vane pump was worked, blade 11 can stably reach the outside of rotor 17, can promote the outside that blade 11 in time reaches rotor 17 by the mode that passes into pressure fluid toward blade groove 16 bottoms.Concrete structure is to be provided with the rounded chamber, the end 18 of truncation surface in the bottom of blade groove 16, and the truncation surface size in chamber, the end 18 is greater than the thickness of blade groove 16, and rotor 17 is axially run through along rotor 17 in chamber, the end 18, and chamber, the end 18 communicates with the external world by passage.For ease of the setting to passage, in housing, be respectively arranged with oil-feed oil distribution casing 7 and fuel-displaced oil distribution casing 3 in the two ends of rotor 17 and assemblying body that stator 12 consists of, oil-feed oil distribution casing 7 goes out head piece 8 one sides near described, fuel-displaced oil distribution casing 3 is near described influent stream mouth 14 1 sides, and channel setting is in oil-feed oil-outlet disk 7.Outer circumferential face at oil-feed oil distribution casing 7 is provided with circular groove 6, be provided with L shaped duct 9 in the oil-feed oil distribution casing 7, the interior edge face of oil-feed oil distribution casing 7 is provided with the oil-feed tank 10 of annular, on housing, go out head piece 8 one sides and be provided with liquid entering hole 4 in described, liquid entering hole 4 communicates with circular groove 6, the import in duct 9 is positioned on the bottom surface of circular groove 6, and outlet is positioned on the bottom surface of oil-feed tank 10.Rotor 17 is when rotating, and an end in chamber, the end 18 is positioned on the circumferential position of oil-feed tank 10 all the time, and chamber, the end 18 keeps communicating with oil-feed tank 10.Liquid entering hole 4, circular groove 6, duct 9, oil-feed tank 10 connections communicate and have consisted of described passage.
Interior edge face at fuel-displaced oil distribution casing 3 is provided with annular groove 13, and the position of groove 13 is corresponding with the position in chamber, the end 18, and when rotor 17 rotated, the other end in chamber, the end 18 was positioned at the position of groove 13 all the time.By at the similar oil duct of fuel-displaced oil distribution casing 3 interior settings and described passage, when vane pump did not need work, the pressure flows in the chamber, the end 18 were known from experience in this oil duct and are flowed out and release, so that the root of blade 11 enters in the chamber, the end 18.
During vane pump work, this hydraulic control does not start, and the blade 11 on the rotor 17 perhaps under the effect in conjunction with the pressure fluid that passes in the chamber, the end 18, can extend in the cavity 15 under the effect of centrifugal force, and blade 11 can carry out supercharging by convection cell.When vane pump does not need that hydraulic oil carried out supercharging, hydraulic control starts, in chamber, annotate to pressure fluid, the chamber of this moment is air-tight state, meanwhile, the pressure fluid in the chamber flows out from fuel-displaced oil distribution casing 3 places, under the effect of cavity indoor pressure fluid, blade 11 is retracted in the rotor 17, and the root of blade 11 extend in the chamber, the end 18.
Claims (8)
1. hydraulic control, be used for the blade movement of vane pump is controlled, described vane pump comprises housing, stator and rotor, rotor is located in the stator rotationally, radially be provided with some blade grooves in the rotor, be provided with slidably blade in the blade groove, blade can partly reach the rotor radial outside or be retracted in the rotor; Form cavity between rotor and the stator, this cavity has fluid suction area, fluid compression district and blade retraction district, be provided with the chamber that communicates with described cavity in the housing, chamber is by the influent stream mouth and go out head piece and communicate with the external world, it is characterized in that, structure comprises links up chamber and extraneous runner, and hydraulic control passes into pressure fluid in the chamber selectively by runner stably is retracted in the rotor blade.
2. hydraulic control according to claim 1 is characterized in that, described runner with go out head piece or the influent stream mouth communicates.
3. hydraulic control according to claim 1, it is characterized in that, described housing is split-type structural, it is to be by the longitudinal section that " front cover of [" shape and rear end cover snap together and form, the face of being fastened between front cover and the rear end cover is ladder surface, and described oil duct is located on the front cover.
4. hydraulic control according to claim 2 is characterized in that, the external fluid control device of described runner.
5. according to claim 1,2,3 or 4 described hydraulic controls, it is characterized in that also comprise passage, passage is linked up the bottom of blade groove and the outside of vane pump, passage is used for linking to each other with fluid control device.
6. hydraulic control according to claim 5 is characterized in that, the bottom of described blade groove is provided with chamber, the end, and the truncation surface size in chamber, the end is greater than the thickness of blade groove.
7. hydraulic control according to claim 6 is characterized in that, rotor is run through along rotor axial in chamber, the described end, is respectively equipped with oil-feed oil distribution casing and fuel-displaced oil distribution casing in the two ends of rotor in housing, and described passage passes the inside of oil-feed oil distribution casing; End face at fuel-displaced oil distribution casing is provided with annular groove, and groove is towards chamber, the end, and groove is corresponding with the position in chamber, the end.
8. hydraulic control according to claim 7, it is characterized in that, described passage comprises that the outer circumferential face of being located at the oil-feed oil distribution casing is provided with circular groove, is located at L shaped duct in the oil-feed oil distribution casing, is located at going out oil groove, being located at the liquid entering hole on the housing of annular on the oil-feed oil distribution casing interior edge face, it is corresponding with the position in chamber, the end to go out oil groove, chamber, the end, goes out oil groove, duct, circular groove, liquid entering hole and communicates.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220447929.5U CN202746199U (en) | 2012-09-05 | 2012-09-05 | Hydraulic control mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220447929.5U CN202746199U (en) | 2012-09-05 | 2012-09-05 | Hydraulic control mechanism |
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| Publication Number | Publication Date |
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| CN202746199U true CN202746199U (en) | 2013-02-20 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201220447929.5U Expired - Lifetime CN202746199U (en) | 2012-09-05 | 2012-09-05 | Hydraulic control mechanism |
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| CN (1) | CN202746199U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103363053A (en) * | 2013-05-15 | 2013-10-23 | 浙江台州先顶液压有限公司 | Hydraulic transmission device |
| CN111120300A (en) * | 2018-10-31 | 2020-05-08 | 中石化石油工程技术服务有限公司 | Hydraulic pump for downhole tool for drilling |
| CN111678705A (en) * | 2020-04-30 | 2020-09-18 | 中国航发南方工业有限公司 | Device for propeller sealing test and blade deflection angle adjustment test |
-
2012
- 2012-09-05 CN CN201220447929.5U patent/CN202746199U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103363053A (en) * | 2013-05-15 | 2013-10-23 | 浙江台州先顶液压有限公司 | Hydraulic transmission device |
| CN111120300A (en) * | 2018-10-31 | 2020-05-08 | 中石化石油工程技术服务有限公司 | Hydraulic pump for downhole tool for drilling |
| CN111678705A (en) * | 2020-04-30 | 2020-09-18 | 中国航发南方工业有限公司 | Device for propeller sealing test and blade deflection angle adjustment test |
| CN111678705B (en) * | 2020-04-30 | 2022-06-07 | 中国航发南方工业有限公司 | Device for propeller sealing test and blade deflection angle adjustment test |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C41 | Transfer of patent application or patent right or utility model | ||
| CB03 | Change of inventor or designer information |
Inventor after: Hu Kai Inventor after: Wang Xinbiao Inventor before: Wang Xinbiao Inventor before: Hu Kai |
|
| COR | Change of bibliographic data | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20161202 Address after: 315040 Zhejiang province Jiangdong District of Ningbo City Thunder Lane No. 116 Patentee after: Hu Yang Address before: 317000, No. 31 Chengbei West Road, Xianju County, Taizhou, Zhejiang Patentee before: ZHEJIANG XIANDING HYDRAULICS Co.,Ltd. |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130220 |