CN103161791B - Bidirectional proportional pressure regulating mechanism - Google Patents
Bidirectional proportional pressure regulating mechanism Download PDFInfo
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- CN103161791B CN103161791B CN201310082471.7A CN201310082471A CN103161791B CN 103161791 B CN103161791 B CN 103161791B CN 201310082471 A CN201310082471 A CN 201310082471A CN 103161791 B CN103161791 B CN 103161791B
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- pressure
- oil outlet
- pressure point
- spool
- valve pocket
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- 230000001105 regulatory effect Effects 0.000 title abstract 6
- 230000002457 bidirectional effect Effects 0.000 title abstract 5
- 239000012530 fluid Substances 0.000 claims abstract description 18
- 230000033001 locomotion Effects 0.000 claims abstract description 11
- 239000000945 filler Substances 0.000 claims description 25
- 238000009530 blood pressure measurement Methods 0.000 claims description 6
- 230000035945 sensitivity Effects 0.000 abstract description 3
- 230000000149 penetrating effect Effects 0.000 abstract 1
- 238000000034 method Methods 0.000 description 14
- 238000010586 diagram Methods 0.000 description 3
- 238000010079 rubber tapping Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
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- Magnetically Actuated Valves (AREA)
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Abstract
A bidirectional proportional pressure regulating mechanism comprises a fluid laminar flow implementing mechanism, a first pressure measuring point, a second pressure measuring point and a pressure measuring point position regulating mechanism. The fluid laminar flow implementing mechanism comprises a valve core and a valve sleeve, wherein an oil inlet, a first oil outlet and a second oil outlet are formed in the valve sleeve, and the oil inlet is arranged between the first oil outlet and the second oil outlet. Working steps matched with the inner diameter of the valve sleeve are arranged at two ends of the valve core, and the clearances of the working steps of the valve core and the valve sleeve are communicated with the oil inlet, the first oil outlet and the second oil outlet. The first pressure measuring point and the second pressure measuring point are both pressure measuring holes penetrating through the valve sleeve, and the pressure measuring holes are communicated with the clearances. The pressure measuring point position regulating mechanism comprises the valve core and a pushing component pushing the valve core to move inside the valve sleeve, and the movement of the valve core enables an L1 and an L2 to change between 0 and L. The bidirectional proportional pressure regulating mechanism has the advantages that bidirectional rectilinear motion is adopted to achieve bidirectional differential-motion proportional stable pressure regulating, and control sensitivity is high.
Description
Technical field
The present invention relates to a kind of two-way proportional pressure-regulating device.
Background technique
Proportional pressure control valve is often used as pilot valve to form two-stage or three step valves.As electro-hydraulic proportion reversing valve is made up of electromagnetic force motor, proportional pressure-reducing valve and hydraulicchange-over valve exactly, proportional pressure-reducing valve is here as pilot stage, the outlet pressure controlled with it balances each other with the spring force of commutation main valve one end, thus controls the displacement openings amount of commutation main valve.General proportional reversing valve mostly is two-way proportional and controls, but there is the control problem that sensitivity is short of to some extent, difficulty of processing is large.
Summary of the invention
Controlling the problem of sensitivity shortcoming, pressure instability in order to solve current two-way valve, the present invention proposes and a kind ofly control highly sensitive, that pressure regulation is stablized, difficulty of processing is low two-way proportional pressure-regulating device.
The two-way proportional pressure-regulating device of the present invention's proposition adopts the laminar flow of fluid flowing to control along stroke pressure loss principle pressure, adopts to move left and right to realize two-way proportional control.For the flowing (see figure 1) of fluid at circle laminar flow in pipe, as length and the diameter ratio l/d>4 of pipe, be called elongated hole, the flowing flowing through elongated hole generally presents Laminar Flow, according to fluid stressed and circle laminar flow in pipe flow formula is in the duct:
Wherein, Q is the flow by aperture; D is pipe diameter; μ is oil viscosity coefficient; P
sfor the pressure of filler opening; P
ofor the pressure of oil outlet; L is pipe length.
Two-way proportional pressure-regulating device of the present invention, is characterized in that: comprise fluid laminar flow realization mechanism, the first pressure point, the second pressure point and pressure measurement points controlling mechanism;
Fluid laminar flow realization mechanism comprises spool and valve pocket, described valve pocket is arranged filler opening, the first oil outlet and the second oil outlet, and described filler opening is arranged between the first described oil outlet and the second oil outlet; The two ends of described spool arrange the working bank mated with the internal diameter of valve pocket; The working bank of described spool is communicated with filler opening, the first oil outlet and the second oil outlet with the gap of valve pocket, described gap is laminar flow layer runner, in described gap, fluid flowing presents laminar flow state, and the pressure distribution of filler opening and the first oil outlet, the second oil outlet presents stable linear distribution;
First pressure point and the second pressure point are the pressure-taking hole running through valve pocket, gap described in described pressure-taking hole is communicated with, the first described pressure point is arranged on the second pressure point between the first described oil outlet and described filler opening, described and is arranged between the second described oil outlet and described filler opening, and the distance between the first described pressure point and the second pressure point equals the length of described spool, the pressure at the first pressure point and the second pressure point place meets following formula:
Wherein, P
abe the pressure at the first pressure point place; P
bbe the pressure at the second pressure point place; P
sfor the pressure of filler opening; P
obe the pressure of the first oil outlet or the second oil outlet; L
1it is the distance between the first pressure point and the first oil outlet; L
2it is the distance between the second pressure point and the second oil outlet; L is the laminar flow layer flow channel length that each working bank and valve pocket are formed; And L
1and L
2span be 0 ~ L; P
aand P
bspan be P
o~ P
s;
Pressure measurement points controlling mechanism comprises the push mechanism that described spool moves in described valve pocket with promotion spool, and the movement of spool makes L
1and L
2change between 0-L.
Described gap can be gap or elongated hole and make fluid flowing be rendered as any runner of laminar flow state.
Described spool moves along the axial direction of valve pocket, described gap linearly directional spreding, outside the two ends that the first described oil outlet and the second oil outlet are arranged on described spool, described filler opening is arranged between two working banks of described spool.
The working bank at described spool two ends is symmetrical along the center center line of spool.
The first described pressure point and the second pressure point symmetrical along the revenue centre of valve pocket.
Working principle of the present invention is: when spool is along valve pocket in the first oil outlet direction sliding process, the gap length that the working bank of the spool near the first oil outlet place and valve pocket are formed is constant, and cross the second pressure point near the working bank of the spool at the second oil outlet place, the distance of first pressure point distance the first oil outlet is increased gradually, the distance of second pressure point distance the second oil outlet is always 0 simultaneously, thus the pressure realizing the first pressure point place increases gradually, the pressure at the second pressure point place is constant simultaneously, calculation of pressure formula according to the first pressure point and the second pressure point place: in the process that the pressure at the first pressure point place linearly changes with the distance between the first pressure point and the first oil outlet, the pressure at the second pressure point place is equal with the pressure at the second oil outlet place, otherwise, when spool is along valve pocket in the second oil outlet direction sliding process, the gap length that the working bank of the spool near the second oil outlet place and valve pocket are formed is constant, and cross the first pressure point near the working bank of the spool at the first oil outlet place, the distance of first pressure point distance the first oil outlet is made to be always 0, the distance of second pressure point distance the second oil outlet increases gradually, thus the pressure realizing the first pressure point place is constant, the pressure at the second pressure point place increases gradually, calculation of pressure formula according to the first pressure point and the second pressure point place: in the process that the pressure at the second pressure point place linearly changes with the distance between the second pressure point and the second oil outlet, the pressure at the first pressure point place is equal with the pressure at the first oil outlet place, thus in the movement process of whole spool, realize the steady voltage regulation function of two-way proportional pressure-regulating device.
Beneficial effect of the present invention shows: pressure-regulating device adopts left and right two-way linear motion to realize two-way proportional pressure regulation; Pressure regulation is stablized; Control highly sensitive; Difficulty of processing is low.
Accompanying drawing explanation
Fig. 1 is that (wherein, P is the pressure at pressure tappings place to fluid layer flowing pressure Distribution Principle figure; l
0distance between pressure tappings and oil outlet).
Fig. 2 is structural drawing of the present invention (four-headed arrow represents valve core movement direction).
Fig. 3 is working procedure schematic diagram (spool is in initial position) of the present invention.
Fig. 4 is working procedure schematic diagram of the present invention (valve core movement is to the first oil outlet side).
Fig. 5 is working procedure schematic diagram of the present invention (valve core movement is to the second oil outlet side).
Embodiment
The present invention is further illustrated below in conjunction with accompanying drawing
With reference to accompanying drawing:
Embodiment 1 two-way proportional pressure-regulating device of the present invention, comprises fluid laminar flow realization mechanism 1, first pressure point 2, second pressure point 3 and pressure measurement points controlling mechanism;
Fluid laminar flow realization mechanism 1 comprises spool 11 and valve pocket 12, described valve pocket 12 is arranged filler opening 121, first oil outlet 122 and the second oil outlet 123, and described filler opening 121 is arranged between the first described oil outlet 122 and the second oil outlet 123; The two ends of described spool 11 arrange the working bank 111 mated with the internal diameter of valve pocket 12, the working bank of described spool 11 is communicated with filler opening 121, first oil outlet 122 and the second oil outlet 123 with the gap 13 of valve pocket 12, described gap 13 is laminar flow layer runner, in described gap 13, fluid flowing presents laminar flow state, and the pressure distribution of filler opening 121 and the first oil outlet 122, second oil outlet 123 presents stable linear distribution;
First pressure point 2 and the second pressure point 3 are the pressure-taking hole running through valve pocket, gap 13 described in described pressure-taking hole is communicated with, the first described pressure point 2 is arranged on the second pressure point 3 between the first described oil outlet 122 and described filler opening 121, described and is arranged between the second described oil outlet 123 and described filler opening 121, and distance between the first described pressure point 2 and the second pressure point 3 is identical with the length of described spool 11, the pressure at the first pressure point 2 and the second pressure point 3 place meets following formula:
Wherein, P
abe the pressure at the first pressure point place; P
bbe the pressure at the second pressure point place; P
sfor the pressure of filler opening; P
obe the pressure of the first oil outlet or the second oil outlet; L
1it is the distance between the first pressure point and the first oil outlet; L
2it is the distance between the second pressure point and the second oil outlet; L is the length of the laminar flow layer runner that each working bank and valve pocket are formed; And L
1and L
2span be 0 ~ L; P
aand P
bspan be P
o~ P
s;
Pressure measurement points controlling mechanism comprises the push mechanism that described spool 11 moves in described valve pocket with promotion spool, and the movement of spool 11 makes L
1and L
2change between 0-L.
Described gap 13 can be gap or elongated hole and make fluid flowing be rendered as any runner of laminar flow state.
Described spool 11 moves along the axial direction of valve pocket 12, described gap 13 linearly directional spreding, outside the two ends that the first described oil outlet 122 and the second oil outlet 123 are arranged on described spool 11, described filler opening 121 is arranged between two working banks 111 of described spool 11.
The working bank 111 at described spool 11 two ends is symmetrical along the center center line of spool 11.
The first described pressure point 2 and the second pressure point 3 symmetrical along the revenue centre of valve pocket 12.
Working principle of the present invention is: when spool 11 is along valve pocket 12 in the first oil outlet 122 direction sliding process, gap 13 length that working bank 111 and the valve pocket 12 of the spool 11 near the first oil outlet 122 place are formed is constant, and cross the second pressure point 3 near the working bank 111 of the spool 11 at the second oil outlet 123 place, first pressure point 2 is increased gradually apart from the distance of the first oil outlet 122, second pressure point 3 is always 0 apart from the distance of the second oil outlet 123 simultaneously, thus the pressure realizing the first pressure point 2 place increases gradually, the pressure at the second pressure point 3 place is constant simultaneously, calculation of pressure formula according to the first pressure point 2 and the second pressure point 3 place: in the process that the pressure at the first pressure point 2 place linearly changes with the distance between the first pressure point 2 and the first oil outlet 122, the pressure at the second pressure point 3 place is equal with the pressure at the second oil outlet 123 place, otherwise, when spool 11 is along valve pocket 12 in the second oil outlet 123 direction sliding process, gap 13 length that working bank 111 and the valve pocket 12 of the spool 11 near the second oil outlet 123 place are formed is constant, and cross the first pressure point 2 near the working bank 111 of the spool 11 at the first oil outlet 122 place, the first pressure point 2 is made to be always 0 apart from the distance of the first oil outlet 122, second pressure point 3 increases gradually apart from the distance of the second oil outlet 123, thus the pressure realizing the first pressure point 2 place is constant, the pressure at the second pressure point 3 place increases gradually, calculation of pressure formula according to the first pressure point 2 and the second pressure point 3 place: in the process that the pressure at the second pressure point 3 place linearly changes with the distance between the second pressure point 3 and the second oil outlet 123, the pressure at the first pressure point 2 place is equal with the pressure at the first oil outlet 122 place, thus in the movement process of whole spool 11, realize the steady voltage regulation function of two-way proportional pressure-regulating device.
Content described in this specification embodiment is only enumerating the way of realization of inventive concept; should not being regarded as of protection scope of the present invention is only limitted to the concrete form that embodiment states, protection scope of the present invention also and conceive the equivalent technologies means that can expect according to the present invention in those skilled in the art.
Claims (5)
1. two-way proportional pressure-regulating device, is characterized in that: comprise fluid laminar flow realization mechanism, the first pressure point, the second pressure point and pressure measurement points controlling mechanism;
Fluid laminar flow realization mechanism comprises spool and valve pocket, described valve pocket is arranged filler opening, the first oil outlet and the second oil outlet, and described filler opening is arranged between the first described oil outlet and the second oil outlet; The two ends of described spool arrange the working bank mated with the internal diameter of valve pocket; The working bank of described spool is communicated with filler opening, the first oil outlet and the second oil outlet with the gap of valve pocket, described gap is laminar flow layer runner, in described gap, fluid flowing presents laminar flow state, and the pressure distribution of filler opening and the first oil outlet, the second oil outlet presents stable linear distribution;
First pressure point and the second pressure point are the pressure-taking hole running through valve pocket, gap described in described pressure-taking hole is communicated with, the first described pressure point is arranged on the second pressure point between the first described oil outlet and described filler opening, described and is arranged between the second described oil outlet and described filler opening, and the distance between the first described pressure point and the second pressure point equals the length of described spool, the pressure at the first pressure point and the second pressure point place meets following formula:
Wherein, P
abe the pressure at the first pressure point place; P
bbe the pressure at the second pressure point place; P
sfor the pressure of filler opening; P
obe the pressure of the first oil outlet or the second oil outlet; L
1it is the distance between the first pressure point and the first oil outlet; L
2it is the distance between the second pressure point and the second oil outlet; L is the laminar flow layer flow channel length that each working bank and valve pocket are formed; And L
1and L
2span be 0 ~ L; P
aand P
bspan be P
o~ P
s;
Pressure measurement points controlling mechanism comprises the push mechanism that described spool moves in described valve pocket with promotion spool, and the movement of spool makes L
1and L
2change between 0-L.
2. two-way proportional pressure-regulating device as claimed in claim 1, is characterized in that: described gap can be gap or elongated hole and make fluid flowing be rendered as any runner of laminar flow state.
3. two-way proportional pressure-regulating device as claimed in claim 2, it is characterized in that: described spool moves along the axial direction of valve pocket, described gap linearly directional spreding, outside the two ends that the first described oil outlet and the second oil outlet are arranged on described spool, described filler opening is arranged between two working banks of described spool.
4. two-way proportional pressure-regulating device as claimed in claim 3, is characterized in that: the working bank at described spool two ends is symmetrical along the center center line of spool.
5. two-way proportional pressure-regulating device as claimed in claim 3, is characterized in that: the first described pressure point and the second pressure point symmetrical along the revenue centre of valve pocket.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310082471.7A CN103161791B (en) | 2013-03-14 | 2013-03-14 | Bidirectional proportional pressure regulating mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310082471.7A CN103161791B (en) | 2013-03-14 | 2013-03-14 | Bidirectional proportional pressure regulating mechanism |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103161791A CN103161791A (en) | 2013-06-19 |
| CN103161791B true CN103161791B (en) | 2014-12-17 |
Family
ID=48585202
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310082471.7A Active CN103161791B (en) | 2013-03-14 | 2013-03-14 | Bidirectional proportional pressure regulating mechanism |
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| Country | Link |
|---|---|
| CN (1) | CN103161791B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4290447A (en) * | 1979-10-05 | 1981-09-22 | Dynex/Rivett Inc. | Electrohydraulic proportional valve |
| US4569273A (en) * | 1983-07-18 | 1986-02-11 | Dynex/Rivett Inc. | Three-way proportional valve |
| CN101858373A (en) * | 2010-06-10 | 2010-10-13 | 浙江工业大学 | High-frequency electrohydraulic fluttering generator |
| CN201844094U (en) * | 2010-10-22 | 2011-05-25 | 浙江工业大学 | Double-mode electrical digital valve |
| CN102537419A (en) * | 2011-12-26 | 2012-07-04 | 浙江工业大学 | Tee high-frequency electro-hydraulic exciting vibration valve |
| CN203189413U (en) * | 2013-03-14 | 2013-09-11 | 浙江工业大学 | Bidirectional proportional regulating mechanism |
-
2013
- 2013-03-14 CN CN201310082471.7A patent/CN103161791B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4290447A (en) * | 1979-10-05 | 1981-09-22 | Dynex/Rivett Inc. | Electrohydraulic proportional valve |
| US4569273A (en) * | 1983-07-18 | 1986-02-11 | Dynex/Rivett Inc. | Three-way proportional valve |
| CN101858373A (en) * | 2010-06-10 | 2010-10-13 | 浙江工业大学 | High-frequency electrohydraulic fluttering generator |
| CN201844094U (en) * | 2010-10-22 | 2011-05-25 | 浙江工业大学 | Double-mode electrical digital valve |
| CN102537419A (en) * | 2011-12-26 | 2012-07-04 | 浙江工业大学 | Tee high-frequency electro-hydraulic exciting vibration valve |
| CN203189413U (en) * | 2013-03-14 | 2013-09-11 | 浙江工业大学 | Bidirectional proportional regulating mechanism |
Non-Patent Citations (1)
| Title |
|---|
| 2D数字高频阀的设计和实验研究;沈建云等;《机床与液压》;20100430;第38卷(第7期);第79-81页 * |
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| Publication number | Publication date |
|---|---|
| CN103161791A (en) | 2013-06-19 |
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Application publication date: 20130619 Assignee: LISHUI ZHENGXIANG PEN INDUSTRY Co.,Ltd. Assignor: JIANG University OF TECHNOLOGY Contract record no.: X2023980037309 Denomination of invention: Bidirectional proportional pressure regulating mechanism Granted publication date: 20141217 License type: Common License Record date: 20230630 |
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Application publication date: 20130619 Assignee: QUZHOU KINGSOON PRECISION MACHINERY Co.,Ltd. Assignor: JIANG University OF TECHNOLOGY Contract record no.: X2023980039426 Denomination of invention: Bidirectional proportional pressure regulating mechanism Granted publication date: 20141217 License type: Common License Record date: 20230811 Application publication date: 20130619 Assignee: Zhejiang Quzhou Kangzhuang Electromechanical Technology Co.,Ltd. Assignor: JIANG University OF TECHNOLOGY Contract record no.: X2023980039423 Denomination of invention: Bidirectional proportional pressure regulating mechanism Granted publication date: 20141217 License type: Common License Record date: 20230811 |
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Application publication date: 20130619 Assignee: QUZHOU DONGGANG MACHINERY MANUFACTURING CO.,LTD. Assignor: JIANG University OF TECHNOLOGY Contract record no.: X2023980048486 Denomination of invention: Bidirectional proportional pressure regulating mechanism Granted publication date: 20141217 License type: Common License Record date: 20231127 Application publication date: 20130619 Assignee: Quzhou Hongyu Machinery Technology Co.,Ltd. Assignor: JIANG University OF TECHNOLOGY Contract record no.: X2023980048467 Denomination of invention: Bidirectional proportional pressure regulating mechanism Granted publication date: 20141217 License type: Common License Record date: 20231127 Application publication date: 20130619 Assignee: ZHEJIANG HAOMING MACHINERY TECHNOLOGY Co.,Ltd. Assignor: JIANG University OF TECHNOLOGY Contract record no.: X2023980048464 Denomination of invention: Bidirectional proportional pressure regulating mechanism Granted publication date: 20141217 License type: Common License Record date: 20231127 |