CN108131346B - A kind of threeway one-way speed-regulating valve - Google Patents
A kind of threeway one-way speed-regulating valve Download PDFInfo
- Publication number
- CN108131346B CN108131346B CN201711392240.0A CN201711392240A CN108131346B CN 108131346 B CN108131346 B CN 108131346B CN 201711392240 A CN201711392240 A CN 201711392240A CN 108131346 B CN108131346 B CN 108131346B
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- China
- Prior art keywords
- mouthfuls
- pressure compensation
- valve body
- hole
- compensation spool
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B13/00—Details of servomotor systems ; Valves for servomotor systems
- F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
- F15B13/029—Counterbalance valves
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B13/00—Details of servomotor systems ; Valves for servomotor systems
- F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
- F15B13/023—Excess flow valves, e.g. for locking cylinders in case of hose burst
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Safety Valves (AREA)
Abstract
The invention discloses a kind of threeway one-way speed-regulating valves, it include valve body, A mouthfuls, T mouthfuls and P mouthfuls are provided on valve body, pressure compensation spool is provided in valve body, the pressure compensation spool is equipped with the first through flow hole and upper part is equipped with throttling valve pocket, the throttling valve pocket is provided with throttle orifice, the second through flow hole and third through flow hole, throttles and is provided with control spring between valve pocket and pressure compensation spool；Bushing, spring base and unidirectional spring are provided with below pressure compensation spool, through-flow chamber is formed between throttling valve pocket and valve body, throttle orifice is communicated with A mouthfuls by through-flow chamber, and control chamber is formed between pressure compensation spool, spring base, bushing and valve interior wall, and control chamber is communicated with P mouthfuls.The present invention has the advantages that structure is simple, compact, and it is small in size, unidirectional speed-regulating function can be completed, and the constant of flow is able to maintain by pressure compensation.
Description
Technical field
The present invention relates to speed governing valve manufacturing technology field, a kind of especially threeway one-way speed-regulating valve.
Background technique
One-way speed-regulating valve is widely used in the speed control of machinery hydraulic system, and effect is that workpiece is made to realize and bear
Carry unrelated unidirectional stepless speed regulation；Existing tradition one-way speed-regulating valve mainly includes valve body, adjusting handle, flow control rod, section
Flow valve core, adjusts spiral shell seat and spring base at slide valve.
Hydraulic oil enters throttling chamber through oil inlet passage by pumping plant, by throttling valve core, flow control rod, adjusting handle and tune
The throttle mechanism that section spiral shell seat collectively forms enters operating cylinder by oil discharge passage, to make work after carrying out step-less adjustment flow
The speed for making oil cylinder carries out stepless speed regulation；Conversely, hydraulic oil flows into pumping plant after oil discharge passage opens slide valve, through oil inlet passage
Oil back chamber, such operating cylinder can quick counter motions.Although it is unidirectional that this one-way speed-regulating valve can be such that workpiece realizes
Stepless speed regulation, but when operating cylinder quickly returns, need a higher pressure to open slide valve, so should not be in low tension loop
Middle use.Simultaneously because throttle mechanism and slide valve are separately placed in valve body in cross bore, so that the speed governing valve volume is big, structure
It is sufficiently complex, but also mostly several fabrication holes are needed, outer leakage link is increased, manufacture difficulty is also big, at high cost, is using
It is then limited to huge shape in journey, can not be used in narrow installation space.
Summary of the invention
It is simple, compact that the technical problem to be solved by the invention for the present situation of prior art is to provide structures, volume
It is small, it can effectively keep a kind of constant threeway one-way speed-regulating valve of flow.
The technical scheme of the invention to solve the technical problem is:
A kind of threeway one-way speed-regulating valve includes valve body, is from top to bottom provided with A mouthfuls and T mouthfuls, valve body on the side wall of valve body
Lower end surface it is axially disposed have P mouthfuls, sliding is provided with the pressure compensation spool for axially penetrating through hole in valve body；Pressure is mended
The lower sides for repaying spool are equipped with the first through flow hole, and the inner hole top of the pressure compensation spool is equipped with throttling valve pocket, the throttling
From top to bottom be equipped with the throttle orifice and third through flow hole that communicate with its second through flow hole of center on the side wall of valve pocket, throttling valve pocket with
Control spring is provided between pressure compensation spool；It is provided with unidirectional spring below pressure compensation spool, the unidirectional spring one
End is withstood on the lower end surface of pressure compensation spool, and the other end is against on the spring base being located at below；Spring base inner hole is provided with
Bushing, the bushing upper end are pressed against at the step of pressure-compensated valve in-core hole, and bullet is inserted into after passing through pressure-compensated valve in-core hole in lower end
Spring abutment inner hole, the bushing are provided centrally with the 4th through flow hole；Throttling, it is through-flow to be formed between the outer wall of valve pocket and the inner wall of valve body
Chamber, throttle orifice are communicated with A mouthfuls by the through-flow chamber, are formed between pressure compensation spool, spring base, bushing and the valve interior wall
There is control chamber, the control chamber is communicated with P mouthfuls；When oil liquid is by P mouthfuls of inflows, enter A mouthfuls by throttle orifice, through-flow chamber, pressure is mended
Repay the opening size that spool can overcome the active force of control spring to slide up and down A mouthfuls of control according to the magnitude of pressure differential before and after throttle orifice
With the first through flow hole and T mouthfuls of on-off；When oil liquid is by A mouthfuls of inflows, pressure compensation spool overcomes the active force of unidirectional spring downward
Mobile to expose third through flow hole, oil liquid flows into P mouthfuls through third through flow hole by A mouthfuls.
The technical measures of optimization further include:
The upper end center of above-mentioned valve body is provided with adjusting rod, and the lower end of the adjusting rod is connected with throttle valve by retaining ring
Core adjusts the opening degree of throttle orifice by moving up and down for throttling valve core.
The upper end of above-mentioned throttling valve pocket, which extends radially outwardly, is formed with position-limited edge, and position-limited edge is against the gear set above it
On ring.
Above-mentioned throttle orifice is circle.
Damping hole is equipped in the middle part of above-mentioned bushing, control chamber is communicated by damping hole with P mouthfuls.
Above-mentioned adjusting rod and the valve body bolt.
External screw thread is formed on the middle part outer wall of above-mentioned valve body.
The externally threaded top is provided with sealing ring on above-mentioned valve body.
A kind of threeway one-way speed-regulating valve of the present invention, structure is simple, compact, small in size；It, which passes through, is arranged throttling valve pocket, and
The valve pocket that throttles is interior to be arranged throttle orifice, to play throttling action, and pressure compensation spool is arranged in valve body, passes through pressure compensation
A mouthfuls of openings of sizes is adjusted, when the pressure difference between P mouthfuls and A mouthfuls increases, pressure compensation spool is moved up, A mouthful of opening reduction,
When the pressure difference between P mouthfuls and A mouthfuls reduces, pressure compensation spool is moved down, and A mouthfuls of opening increases, if A mouthfuls of pressure declines are quickly,
Pressure compensation spool continues to move up, in this way can be in the aperture of throttle orifice by the first through flow hole and the logical progress bypass shunt of T oral groove
Under the premise of remaining unchanged, in the case where ensure that load variation, the flow constant exported by A mouthfuls is constant.And work as oil liquid
When by A mouthfuls P mouthfuls of inflow, A mouthfuls of oil liquid act directly on pressure compensation spool on overcome the active force of unidirectional spring to move down,
Third through flow hole is opened, oil liquid flows into P mouthfuls by third through flow hole.
Detailed description of the invention
Fig. 1 is structural schematic diagram of the invention；
Fig. 2 is hydraulic schematic diagram of the invention.
Specific embodiment
The present invention will be described in further detail below with reference to the embodiments of the drawings.
It is as shown in Figure 1 structural schematic diagram of the invention,
Appended drawing reference therein are as follows: A mouthfuls, T mouthfuls, P mouthfuls, valve body 1, through-flow chamber 1a, control chamber 1b, external screw thread 12, pressure benefit
Repay spool 2, the first through flow hole 21, throttling valve pocket 3, throttle orifice 31, the second through flow hole 33, third through flow hole 32, throttling valve core 4,
Bushing 5, the 4th through flow hole 51, damping hole 52, spring base 6, unidirectional spring 7, pressure compensation spring 8, baffle ring 9, adjusting rod 10, gear
Circle 11.
As shown in Figure 1 to Figure 2,
A kind of threeway one-way speed-regulating valve includes valve body 1, is from top to bottom provided with A mouthfuls and T mouthfuls, valve on the side wall of valve body 1
The lower end surface of body 1 is axially disposed P mouthfuls, and sliding is provided with the pressure compensation spool 2 for axially penetrating through hole in valve body 1；
The lower sides of pressure compensation spool 2 are equipped with the first through flow hole 21, and the inner hole top of the pressure compensation spool 2 is equipped with throttle valve
3 are covered, the throttle orifice 31 communicated with its second through flow hole of center 33 is from top to bottom equipped on the side wall of the throttling valve pocket 3 and third is logical
Discharge orifice 32 throttles and is provided with control spring 8 between valve pocket 3 and pressure compensation spool 2；The lower section of pressure compensation spool 2 is provided with
Unidirectional spring 7,7 one end of unidirectional spring are withstood on the lower end surface of pressure compensation spool 2, and the other end is against the bullet being located at below
On spring abutment 6；6 inner hole of spring base is provided with bushing 5, which is against at 2 inner hole step of pressure compensation spool, and lower end is inserted
Enter 6 inner hole of spring base, which is provided centrally with the 4th through flow hole 51；It throttles between the outer wall of valve pocket 3 and the inner wall of valve body 1
It is formed with through-flow chamber 1a, throttle orifice 31 is communicated with A mouthfuls by the through-flow chamber 1a, pressure compensation spool 2, spring base 6, bushing 5
Control chamber 1b is formed between 1 inner wall of valve body, control chamber 1b is communicated with P mouthfuls；When oil liquid is by P mouthfuls of inflows, by throttle orifice 31, lead to
Stream chamber 1a enters A mouthfuls, and pressure compensation spool 2 can overcome the active force of control spring 8 according to the magnitude of pressure differential of 31 front and back of throttle orifice
Slide up and down the opening size and the first through flow hole 21 and T mouthfuls of on-off of A mouthful of control；When oil liquid is by A mouthfuls of inflows, pressure-compensated valve
Core 2 overcomes the active force of unidirectional spring 7 to move down exposing third through flow hole 32, and oil liquid flows into P through third through flow hole 32 by A mouthfuls
Mouthful.
In embodiment, the upper end center of valve body 1 is provided with adjusting rod 10, and the lower end of adjusting rod 10 is connected with by retaining ring 11
Throttling valve core 4 adjusts the opening degree of throttle orifice 31 by moving up and down for throttling valve core 4.
Adjusting rod 10 is set, drives throttling valve core 4 to move up and down by adjusting rod 10, thus to adjust throttle orifice 31
Opening degree, when throttling valve core 41 moves down, the opening of throttle orifice 31 reduces, restriction effect enhancing, conversely, working as throttling valve core 4
When moving up, the opening of throttle orifice 31 increases, and restriction effect weakens.
In embodiment, the upper end of throttling valve pocket 3, which extends radially outwardly, is formed with position-limited edge 34, and position-limited edge 34, which is against, is located at it
On the baffle ring 9 of top.
In embodiment, throttle orifice 31 is circle, and easy to process in this way and control, production cost are low.
In embodiment, damping hole 52 is equipped in the middle part of bushing 5, control chamber 1b is communicated by damping hole 52 with P mouthfuls.Damping hole 52
Setting, the P mouthfuls of oil liquid for leading to control chamber 1b can be made by damping, the pressure compensation spool 2 when P mouthfuls of pressure oscillations
There is the effect of damping shock absorption.
In embodiment, adjusting rod 10 and 1 bolt of valve body.
In embodiment, external screw thread 12 is formed on the middle part outer wall of valve body 1.
In embodiment, the top of the external screw thread 12 is provided with sealing ring 13 on valve body 1.
When this one-way speed-regulating valve is installed, installation position is bolted in by external screw thread 11, and the setting of sealing ring 13 ensure that
Leakproofness between valve body 1 and installation position.
Working principle:
When oil liquid is from A mouthfuls of entrance, oil liquid enters in through-flow chamber 1a, the oil pressure with the accumulation of oil liquid, in through-flow chamber 1a
Increasing, oil pressure acts on pressure compensation spool 2, and the elastic force of unidirectional spring 7 is overcome to push down on pressure compensation spool 2, from
And the third through flow hole 32 for making to throttle on valve pocket 3 all exposes, through-flow chamber 1a inner fluid is through third through flow hole 32, the second through flow hole
33, the 4th through flow hole 51 is flowed out from P mouthfuls.
When oil liquid is from P mouthfuls of entrance, oil liquid enters the in throttling valve pocket 3 by the 4th through flow hole 51 at 5 center of bushing
Threeway discharge orifice 33, then oil liquid flows into through-flow chamber 1a through throttle orifice 31, and the oil liquid in through-flow chamber 1a is passed through to flow out from A mouthfuls.It is born when A mouthfuls
When load becomes smaller, the pressure difference between P mouthfuls and A mouthfuls increases, and differential pressure action will push pressure compensation spool 2 on pressure compensation spool 2
The active force of control spring 8 is overcome to move up, with moving up for pressure compensation spool 2, A mouthfuls of aperture reduces, if A mouthfuls are opened
Degree reduces the pressure difference for being also not enough to control P mouthfuls He A mouthfuls, and pressure compensation spool 2 continues to move up, by the first through flow hole 21 and T
Hole communicates, and is shunted by the T mouthfuls of oil liquid to P mouthfuls, until reaching equilibrium state；If A mouthfuls of loads are when becoming larger, P mouthful with A mouth
Between pressure difference reduce, upward resultant force of the differential pressure action on pressure compensation spool 2 reduces, and pressure compensation spool 2 is in control bullet
It is moved down under the active force of spring 8, A mouthfuls of aperture increases, until reaching equilibrium state.Pressure difference between P in this way mouthfuls and A mouthfuls can
In the case where guaranteeing the constant variation this guarantees load under the action of pressure compensation spool 2, if throttle orifice 31 is opened
Spend it is constant, by A mouthfuls export flow will keep constant it is constant.
Highly preferred embodiment of the present invention has illustrated, and the various change or remodeling made by those of ordinary skill in the art are not
It can depart from the scope of the present invention.
Claims (8)
1. a kind of threeway one-way speed-regulating valve includes valve body (1), it is characterized in that: on the side wall of the valve body (1) from top to bottom
A mouthfuls and T mouthfuls are provided with, the lower end surface of the valve body (1) is axially disposed there are P mouthfuls, sliding setting in the valve body (1)
Have with the pressure compensation spool (2) for axially penetrating through hole；It is through-flow that the lower sides of the pressure compensation spool (2) are equipped with first
Hole (21), the inner hole top of the pressure compensation spool (2) are equipped with throttling valve pocket (3), on the side wall of the throttling valve pocket (3) by up to
Have the throttle orifice (31) and third through flow hole (32) communicated with the second through flow hole of its center (33), the throttling valve pocket
(3) control spring (8) is provided between the pressure compensation spool (2)；The lower section of the pressure compensation spool (2) is arranged
There are unidirectional spring (7), which withstands on the lower end surface of pressure compensation spool (2), and the other end, which is against, is located at it
On the spring base (6) of lower section；Spring base (6) inner hole is provided with bushing (5), which is pressed against the pressure
At compensating spool (2) inner hole step, spring base (6) inner hole, the bushing are inserted into after passing through pressure compensation spool (2) inner hole in lower end
(5) it is provided centrally with the 4th through flow hole (51)；Shape between the outer wall of the throttling valve pocket (3) and the inner wall of the valve body (1)
At having through-flow chamber (1a), the throttle orifice (31) is communicated with A mouthfuls by the through-flow chamber (1a), the pressure compensation spool
(2), be formed with control chamber (1b) between spring base (6), bushing (5) and the valve body (1) inner wall, the control chamber (1b) with P mouthfuls
It communicates；When oil liquid is by P mouthfuls of inflows, enter A mouthfuls by throttle orifice (31), through-flow chamber (1a), pressure compensation spool (2) can be according to section
Magnitude of pressure differential before and after discharge orifice (31) overcomes the active force of control spring (8) to slide up and down A mouthfuls of opening size and first of control
Through flow hole (21) and T mouthfuls of on-off；When oil liquid is by A mouthfuls of inflows, pressure compensation spool (2) overcomes the active force of unidirectional spring (7)
It moves down and exposes third through flow hole (32), oil liquid flows into P mouthfuls through third through flow hole (32) by A mouthfuls.
2. a kind of threeway one-way speed-regulating valve according to claim 1, it is characterized in that: the upper end center of the valve body (1)
Adjusting rod (10) are provided with, the lower end of the adjusting rod (10) is connected with throttling valve core (4) by retaining ring (11), passes through throttling valve core
(4) move up and down to adjust the opening degree of throttle orifice (31).
3. a kind of threeway one-way speed-regulating valve according to claim 2, it is characterized in that: the upper end of the throttling valve pocket (3)
It extends radially outwardly and is formed with position-limited edge (34), the position-limited edge (34) is against on the baffle ring (9) set above it.
4. a kind of threeway one-way speed-regulating valve according to claim 1, it is characterized in that: the throttle orifice (31) is circle.
5. a kind of threeway one-way speed-regulating valve according to claim 1, it is characterized in that: being equipped with resistance in the middle part of the bushing (5)
Buddhist nun hole (52), the control chamber (1b) are communicated by damping hole (52) with P mouthfuls.
6. a kind of threeway one-way speed-regulating valve according to claim 2, it is characterized in that: the adjusting rod (10) and the valve
Body (1) bolt.
7. a kind of threeway one-way speed-regulating valve according to claim 6, it is characterized in that: the middle part outer wall of the valve body (1)
On be formed with external screw thread (12).
8. a kind of threeway one-way speed-regulating valve according to claim 7, it is characterized in that: described outer on the valve body (1)
Sealing ring (13) are provided with above screw thread (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711392240.0A CN108131346B (en) | 2017-12-21 | 2017-12-21 | A kind of threeway one-way speed-regulating valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711392240.0A CN108131346B (en) | 2017-12-21 | 2017-12-21 | A kind of threeway one-way speed-regulating valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108131346A CN108131346A (en) | 2018-06-08 |
| CN108131346B true CN108131346B (en) | 2019-11-22 |
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ID=62391101
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711392240.0A Active CN108131346B (en) | 2017-12-21 | 2017-12-21 | A kind of threeway one-way speed-regulating valve |
Country Status (1)
| Country | Link |
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| CN (1) | CN108131346B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110778555B (en) * | 2019-10-31 | 2021-03-05 | 徐州阿马凯液压技术有限公司 | Embedded pressure compensation valve rod |
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| CN204082744U (en) * | 2014-09-28 | 2015-01-07 | 北京建筑大学 | A kind of series flow control valve |
| CN204436924U (en) * | 2015-02-07 | 2015-07-01 | 东莞市嘉钢机电科技发展有限公司 | A kind of miniature one-way speed-regulating valve |
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| CN2127963Y (en) * | 1992-05-29 | 1993-03-10 | 刘书斌 | Single direction stroke speed adjusting valve |
| CN205423379U (en) * | 2016-03-16 | 2016-08-03 | 建湖县威力液压机械制造有限公司 | It is two by one -way governing valve |
| CN106907367A (en) * | 2017-04-17 | 2017-06-30 | 西华大学 | New Structure Speed Control Valve |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4219181A (en) * | 1977-10-03 | 1980-08-26 | Joelson Karl Evert | Fluid flow governing valve means |
| CN201047365Y (en) * | 2007-05-28 | 2008-04-16 | 上海立新液压有限公司 | Governing valve |
| JP2009008183A (en) * | 2007-06-28 | 2009-01-15 | Maruyama Mfg Co Ltd | Pressure regulating valve |
| CN101655111A (en) * | 2008-08-21 | 2010-02-24 | 上海立新液压有限公司 | Novel overlapped speed regulating valve |
| CN201363330Y (en) * | 2009-01-15 | 2009-12-16 | 曹忠泉 | Plate-type one-way speed-regulating valve |
| CN201687788U (en) * | 2010-05-26 | 2010-12-29 | 郑州宇通重工有限公司 | Synchronous control valve |
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| CN103867511A (en) * | 2014-02-25 | 2014-06-18 | 浙江大学 | Flow control valve |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN108131346A (en) | 2018-06-08 |
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Effective date of registration: 20191030 Address after: 317610 Taizhou City, Zhejiang Province, the functional area of the Ganjiang hardware industry (Salt Pan Village) Applicant after: Zhejiang Double-Lin Valves Co., Ltd. Address before: 315000 Zhejiang province Ningbo city Ningbo high tech Zone Juxian Road No. 555 building 035 room 18-1 No. 013 station Applicant before: Ningbo Wen fan electrical and Mechanical Technology Development Co., Ltd. |
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| GR01 | Patent grant |