CN206487614U - A kind of three effect vane pumps of the wide speed range of band compensation - Google Patents
A kind of three effect vane pumps of the wide speed range of band compensation Download PDFInfo
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- CN206487614U CN206487614U CN201720037627.3U CN201720037627U CN206487614U CN 206487614 U CN206487614 U CN 206487614U CN 201720037627 U CN201720037627 U CN 201720037627U CN 206487614 U CN206487614 U CN 206487614U
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- distribution casing
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- oil distribution
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- blade
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Abstract
The utility model is related to piston machinery or pump technical field, specifically a kind of three effect vane pumps of the wide speed range of band compensation, its oil distribution casing is provided with startup ring, the two ends of stator are connected with being located at the force feed oil distribution casing and oil suction oil distribution casing of stator both sides respectively by alignment pin, the quantity for starting ring is two, respectively on oil suction oil distribution casing and force feed oil distribution casing, rotor is provided with radially-arranged 18 blade grooves, in blade groove provided with can radially slidably blade, adjacent two blade and rotor outside, on the inside of stator, press oil oil distribution casing and oil suction oil distribution casing composition sealing transition region, check valve and damping block are provided with force feed oil distribution casing.Improvement rear blade pump product adapts to the high low-speed running of servo, variable-frequency motor and switching, low rate start, low speed heavy pressure operation and instant reversal unload pressure request, and stable working, life-span and performance surmount old infrastructure product significantly.And with simple in construction, easy to manufacture, the characteristics of easily producing in batches, should vigorously promote the use.
Description
[technical field]
The utility model is related to piston machinery or pump technical field, specifically a kind of wide speed range of band compensation
Three effect vane pumps.
[background technology]
Three effect vane pumps are a kind of positive displacement pumps of hydraulic drive.Three effect concepts：It is exactly blade pump rotor rotation
Suction in one week, oil extraction three times.Both single acting vane pump earliest as variable pump it had been different from, also different from occupying in the market very
The double acting constant flow paddle pump of big quantity.Its more compact structure, and double-acting vane pump ratio, under the identical line of apsides of stator,
Its discharge capacity can increase by 50%, and three effect vane pumps install that to start the range of speeds after rings wider, can be in 50-3000r/min scope works
Make.Therefore the need in the market servomotor, variable-frequency motor system variable speed operating mode being met, the purpose of efficient energy-saving is reached.
There is a kind of a kind of three effect vane pump such as Publication No. CN205533187U wide speed range in the prior art
Three effect vane pumps, the product can meet the requirement of the various operating modes such as servo, variable-frequency motor and hydraulic system, but still suffer from as follows
Problem：
1. the contour accuracy of stator and startup ring requires very high, country's numerical control stator profile grinder can process optimal wheel at present
Wide precision is in 0.05mm or so, along with the error of two side oil distribution casing positioning precisions, blade height error, it is difficult to ensure that blade with
Slight clearance 0.02-0.05mm between stator, startup ring, assembly qualified rate is very low.
2. product is in instant reversal pressure leak process, force feed cavity pressure is instantaneous to change to 0 from high pressure, in addition to negative pressure due to
Inhale, force feed oil distribution casing annular groove is communicated with pumping cavity, the oil pressure change procedure for holding up blade is identical with force feed cavity pressure, also instantaneously
0 is changed to from high pressure, or even to negative pressure.Inhale, the working condition for being close to stator all the time that the blade of pumping cavity is original is destroyed,
Both ensured that blade was pressed on the oil pressure of the root of blade of bore of stator and suddenly disappeared or become negative value, effect of the blade in stator curve
Descend or be suspended between startup ring and bore of stator or quickly rush at startup ring, send strong strike note；Simultaneously because the number of blade
The relation of amount, high and low pressure chamber transition zone sealing angle very little, when instant reversal angle is bigger than normal, high and low pressure chamber transition zone oil pressure mistake
Degree is too fast, and oil pressure instantaneously drops to 0 or negative pressure from high pressure, can produce huge hydraulic shock.Complete system after instant reversal pressure release
Seek quickness run-up pressure work, the rotating speed of motor is quickly raised to more than 2000r/min, during this rotating speed rapid mutation, take off again
Stator is rushed under the root of blade oil pressure double action set up from the blade of stator inner surface in centrifugal force and quickly, hydraulic pressure is produced
Impact and mechanical noise, it is impossible to meet the low noise job requirement of equipment.
[utility model content]
The purpose of this utility model be exactly in order to solve the above-mentioned technical problem there is provided a kind of structure it is novel, safe and reliable, fortune
Row is stable, three effect vane pumps of the wide speed range of the band of service life length compensation, including drive shaft, spline, stator, turns
Son, the oil distribution casing with annular groove, some blades, oil suction area, laminated oil zone, oil distribution casing is provided with startup ring, described oil distribution casing
Including force feed oil distribution casing and oil suction oil distribution casing, the two ends of stator are by alignment pin respectively with being located at the force feed oil distribution casings of stator both sides
With the connection of oil suction oil distribution casing, the quantity for starting ring is two, is respectively provided on oil suction oil distribution casing and force feed oil distribution casing, and described turns
Son is provided with radially-arranged blade groove, in blade groove provided with can radially slidably blade, the quantity of described blade groove
For 18, sealing transition region is in the region between oil suction area and laminated oil zone, and the angle between oil suction area and laminated oil zone subtracts rotor
The angle of two adjacent blades is sealing angle in groove, and the sealing angle of sealing transition region is 17 degree, in laminated oil zone and force feed with oil
Check valve and damping block are additionally provided between the annular groove of disk, when oil-discharging cavity oil pressure is mutated, annular groove oil pressure is ensured jack-up leaf
Piece is pressed on stator inner surface.
The inner chamber edge of stator is not advised by what three the first circular arcs, three the second circular arcs and six skew curves were constituted
Then shape arc-shaped, so as to constitute Inner arc, the diameter of the first circular arc is less than the second circular arc, each first circular arc and the second circular arc it
Between pass through skew curve and connect.
Shape, the central point for starting ring are consistent with stator, and the diameter for starting ring is less than the diameter of stator, thus starts ring
The size difference at outer and the inner chamber edge of stator forms the space of equidistant width.Start oil suction oil distribution casing and pressure that ring stretches out both sides
Oily oil distribution casing end face 1.5mm, holds up 18 blades.
Described drive shaft is connected by spline with rotor.
The method of work of the vane pump is：Drive shaft driving rotor rotation, in the slow-speed of revolution, blade is installed in oil distribution casing
Upper startup ring effect presses to stator under promoting, when blade is moved by the smaller part radial direction large radius of stator, between two blades and rotor
Outside, on the inside of stator and the sealed volumes of two side oil distribution casings compositions gradually increases, parital vacuum is formed and oil suction, when blade is by big
When being moved at half radial direction minor radius, the sealed volume that two blades are constituted with rotor outside, stator inner side and two side oil distribution casings is gradually
Diminish and oil extraction；After oil pressure is set up, Opening pressure that pressure oil is installed by pressing oil on disk minimum check valve and damping hole
Guide suction into, be press-fitted the annular groove of food tray, the oil pressure of annular groove holds up blade, and blade is tightly pressed against on stator inner surface, makes leaf
Piece root departs from starting ring, completes working cycles；Because bore of stator has three sections of orthodromes, three sections of small arc-shapeds, six sections of curves
Constitute, therefore rotor rotates a circle and can circulated while completing three tasks；In high rotating speed, blade is close to stator, blade all the time
Root is completely disengaged from starting ring, and the change of the oil pressure of its course of work and annular groove is identical with common blade pump, equally
Rotor rotates a circle can be while complete the circulation of three tasks；Product in instant reversal pressure leak process, force feed cavity pressure it is instantaneous from
High pressure changes to 0, or even to negative pressure, two check valves and damping hole on force feed oil distribution casing play a role, check valve
Quick closedown, the oil pressure of root of blade can only slowly be declined by damping hole, it is ensured that the oil pressure of root of blade is more than vane tip,
Blade is set to be close to bore of stator all the time, it is to avoid blade comes to nothing generation impact noise；Increase blade quantity makes the increase of sealed volume chamber,
Cavity volume reduces, and accordingly adds the sealing angle of transition zone between high-low pressure chamber, when instant reversal angle is big, and oil pressure change is flat
Slow, oil pressure drops to 0 or negative pressure from high pressure, the hydraulic shock that will not be produced.
Above-mentioned improved rear blade pump product adapts to the high low-speed running of servo, variable-frequency motor and switching, low rate start, low
Fast high-voltage operation and instant reversal unload pressure request, and stable working, life-span and performance surmount old infrastructure product significantly.And with knot
Structure is simple, and easy to manufacture, the characteristics of easily producing in batches should vigorously promote the use.
[brief description of the drawings]
Fig. 1 is the primary structure schematic diagram of the utility model embodiment；
Fig. 2 is the utility model Fig. 1 side view；
Fig. 3 is the utility model Fig. 1 A portions enlarged drawing；
Fig. 4 starts ring structure schematic diagram for three effects of the utility model embodiment；
As illustrated, in figure：1. after the effect of the oil suction oil distribution casing 3. 3 of the pump housing 2. start the blades 6. of ring 4. rotor 5. and determine
The effect of son 7. 3 starts the power transmission shaft 13. of the pump housing 12. before the force feed oil distribution casing 11. of damping block 10. of 8. check valve of ring 9. and pressed
Oil suction area 15. of the oily area 14. sealing sealing angle of transition zone ranges 16..
[embodiment]
The utility model is described in further detail below in conjunction with the accompanying drawings, the structure and principle of this device people professional to this
For be very clear.It should be appreciated that specific embodiment described herein is only to explain the utility model, and without
In restriction the utility model.
The utility model is a kind of three effect vane pumps of the wide speed range that band is compensated, mainly by increasing the number of blade
Amount, increase transition zone seal angle to 17 degree, change original oil distribution casing annular groove directly communicated with pumping cavity, pressing oil oil distribution casing
Upper ad-hoc location install check valve and damping block mode make vane pump product adapt to the high low-speed running of servo, variable-frequency motor and
Switching, low rate start, low speed heavy pressure operation and instant reversal unload pressure request, and stable working, life-span and performance surmount old knot significantly
Structure product, as shown in Figure 1.Vane pump is made up of parts such as rotor, stator, blade, oil distribution casing and end caps.The inner surface of stator
It is curved hole, rotor and stator are concentric.Stator design of the present utility model has three sections of orthodrome R into sub-elliptical, three sections small
Circular arc r, six sections of curve compositions.Drive shaft is connected by spline with rotor, there is radially-arranged 18 blade grooves on rotor,
Blade groove is built with blade that can radially slidably, and two ends of stator are connected by alignment pin with the oil distribution casing of two sides.Blade
Can flexibly it be radially slided in the groove of rotor, centrifugal force when rotor is rotated and the effect for being passed through root of blade pressure oil
Under, vane tip is adjacent on stator inner surface, and one is then just formd between two adjacent blades, oil distribution casing, stator and rotor
Individual sealed working chamber.Sealing transition region is in region between oil suction area and laminated oil zone, the angle between oil suction area and laminated oil zone
The angle for subtracting two adjacent blades in rotor slot is sealing angle, when the timing of sealing transition region angle one, blade quantity more two
The angle of adjacent blades is smaller, and opposing seal angle is bigger, and sealing angle increases to 17 degree.When axle driving rotor rotation,
Start the effect of ring on oil distribution casing, (or even more than ten turns per minute) blade is being opened on oil distribution casing in the slow-speed of revolution
Press to stator in the presence of rotating ring, start ring design into it is corresponding with stator profile by three small arc-shapeds r, three orthodrome R and
The external arc of six skew curve compositions, stretches out two side oil distribution casing end face 1.5mm or so, holds up 18 blades.When blade by
Stator minor radius r to large radius R move when, between two blades with the outside of rotor, on the inside of stator and two side oil distribution casings compositions it is closed
Volume gradually increases, and forms parital vacuum and oil suction, is oil suction area.Conversely, when blade from large radius R to minor radius r place movement
When, blade is retracted inward, on the outside of two blades and rotor, on the inside of stator and two side oil distribution casings compositions sealed volume taper into and
Fluid in oil extraction, annular seal space is forced out and is output in system, is laminated oil zone.
After oil pressure is set up, the minimum check valve of Opening pressure that pressure oil is installed by pressing oil on disk and damping hole are guided into
The annular groove of food tray is inhaled, is press-fitted, the oil pressure of annular groove holds up blade, blade is tightly pressed against on stator inner surface, makes blade root
Portion departs from starting ring, completes working cycles.Because bore of stator has three sections of orthodromes R, three sections of small arc-shaped r, six sections of curve groups
Into, thus rotor rotate a circle can and meanwhile complete three tasks circulation.In high rotating speed, blade is close to stator, blade root all the time
Portion is completely disengaged from starting ring, and the change of the oil pressure of its course of work and annular groove is identical with common blade pump, same to turn
Son, which rotates a circle, to be circulated while completing three tasks, no longer repeat here.Product is in instant reversal pressure leak process, pumping cavity
Pressure is instantaneous to change to 0 from high pressure, or even to negative pressure, two check valves and damping hole on force feed oil distribution casing, which are played, to be made
With check valve quick closedown, the oil pressure of root of blade can only slowly be declined by damping hole, it is ensured that the oil pressure of root of blade is more than
Vane tip, makes blade be close to bore of stator all the time, it is to avoid blade comes to nothing generation impact noise.Increase blade quantity makes closed appearance
Product chamber increase, cavity volume reduces, and accordingly adds the sealing angle of transition zone between high-low pressure chamber, when instant reversal angle is big,
Oil pressure change is gentle, and oil pressure drops to 0 or negative pressure from high pressure, the hydraulic shock that will not be produced.Due to increase blade quantity make it is closed
Cavity volume increase, makes startup ring and blade, the fit clearance of stator have the amplification of certain amplitude.Namely make startup ring curve wheel
Wide precision, the machining accuracy of bore of stator contour accuracy have very big decline.Contour accuracy reaches that ＜ 0.12mm just can meet production
Job requirement under each state of product.Domestic equipment is entirely capable of reaching this machining accuracy.Make it possible production in enormous quantities.
Complete in addition after instant reversal pressure release, the rotating speed of motor is quickly raised to more than 2000r/min, is quickly dashed forward in this rotating speed
During change, because centrifugal force and root of blade have oil pressure to head on all the time, vane tip just all the time with stator contact, also would not
The impulsive force to stator when blade comes to nothing is produced, the low noise job requirement of equipment is met.
Claims (4)
1. a kind of three effect vane pumps of the wide speed range of band compensation, including drive shaft, spline, stator, rotor, with annular
Oil distribution casing, oil suction area, laminated oil zone, sealing transition region, some blades of groove, oil distribution casing is provided with startup ring, described oil distribution casing
Including force feed oil distribution casing and oil suction oil distribution casing, the two ends of stator are by alignment pin respectively with being located at the force feed oil distribution casings of stator both sides
With the connection of oil suction oil distribution casing, the quantity for starting ring is two, is respectively provided on oil suction oil distribution casing and force feed oil distribution casing, and described turns
Son is provided with radially-arranged blade groove, in blade groove provided with can radially slidably blade, it is characterised in that described leaf
The quantity of film trap is 18, and the sealing angle of sealing transition region is 17 degree, between the annular groove of laminated oil zone and force feed oil distribution casing
It is additionally provided with check valve and damping block.
2. three effect vane pumps of the wide speed range of a kind of band compensation as claimed in claim 1, it is characterised in that described
The inner chamber edge of stator is the irregular shape circular arc being made up of three the first circular arcs, three the second circular arcs and six skew curves
Shape, so as to constitute Inner arc, the diameter of the first circular arc is less than the second circular arc, and one is passed through between each first circular arc and the second circular arc
Bar skew curve is connected.
3. three effect vane pumps of the wide speed range of a kind of band compensation as claimed in claim 1 or 2, it is characterised in that described
The startup shape of ring, central point it is consistent with stator, the diameter for starting ring is less than the diameter of stator, thus start ring outer and
The size difference at the inner chamber edge of stator forms the space of equidistant width, starts ring and stretches out the oil suction oil distribution casing and force feed of both sides with oil
Side surface 1.5mm, holds up 18 blades.
4. three effect vane pumps of the wide speed range of a kind of band compensation as claimed in claim 1, it is characterised in that described
Drive shaft is connected by spline with rotor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720037627.3U CN206487614U (en) | 2017-01-13 | 2017-01-13 | A kind of three effect vane pumps of the wide speed range of band compensation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720037627.3U CN206487614U (en) | 2017-01-13 | 2017-01-13 | A kind of three effect vane pumps of the wide speed range of band compensation |
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| Publication Number | Publication Date |
|---|---|
| CN206487614U true CN206487614U (en) | 2017-09-12 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720037627.3U Active CN206487614U (en) | 2017-01-13 | 2017-01-13 | A kind of three effect vane pumps of the wide speed range of band compensation |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106640634A (en) * | 2017-01-13 | 2017-05-10 | 宁波威克斯液压有限公司 | Three-action vane pump with complementary wide rotary speed range and working method thereof |
-
2017
- 2017-01-13 CN CN201720037627.3U patent/CN206487614U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106640634A (en) * | 2017-01-13 | 2017-05-10 | 宁波威克斯液压有限公司 | Three-action vane pump with complementary wide rotary speed range and working method thereof |
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