CN108105436A - A kind of one-way speed-regulating valve - Google Patents
A kind of one-way speed-regulating valve Download PDFInfo
- Publication number
- CN108105436A CN108105436A CN201711391834.XA CN201711391834A CN108105436A CN 108105436 A CN108105436 A CN 108105436A CN 201711391834 A CN201711391834 A CN 201711391834A CN 108105436 A CN108105436 A CN 108105436A
- Authority
- CN
- China
- Prior art keywords
- valve
- valve body
- throttling
- mouthfuls
- way speed
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K17/00—Safety valves; Equalising valves, e.g. pressure relief valves
- F16K17/20—Excess-flow valves
- F16K17/22—Excess-flow valves actuated by the difference of pressure between two places in the flow line
- F16K17/24—Excess-flow valves actuated by the difference of pressure between two places in the flow line acting directly on the cutting-off member
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K15/00—Check valves
- F16K15/18—Check valves with actuating mechanism; Combined check valves and actuated valves
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K47/00—Means in valves for absorbing fluid energy
- F16K47/08—Means in valves for absorbing fluid energy for decreasing pressure or noise level and having a throttling member separate from the closure member, e.g. screens, slots, labyrinths
Abstract
The invention discloses a kind of one-way speed-regulating valves, include valve body, the lower end of valve body is provided with screw plug, the screw plug is provided centrally with A mouthfuls, B mouthfuls are provided in the middle part of valve body, pressure compensation spool is provided in valve body, which is provided centrally with nonreturn valve core, the nonreturn valve core is provided centrally with through flow hole, and the first spring is provided between nonreturn valve core and the screw plug；Bushing is provided with above pressure compensation spool, the through-flow slot being connected with B mouthfuls is offered on the bushing, throttling valve pocket is provided in the top of valve body, the lower end of the throttling valve pocket is provided with and the matched valve port of the nonreturn valve core, it throttles and is formed with through-flow chamber between the outer wall of valve pocket and the inner wall of the valve body, throttle valve puts on the throttling channel for being provided with and being connected with the through-flow chamber, and second spring is provided between bushing and the throttling valve pocket.The advantage of the invention is that：It is simple in structure, compact, it is small, and pass through pressure compensation and can keep the constant of flow.
Description
Technical field
The present invention relates to speed governing valve manufacturing technology field, a kind of especially one-way speed-regulating valve.
Background technology
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, guiding valve adjust spiral shell seat and spring base.
Hydraulic oil enters throttling chamber by pumping plant through oil inlet passage, by throttling valve core, flow control rod, adjusting handle and tune
The throttle mechanism that section spiral shell seat collectively forms, after carrying out step-less adjustment flow, enters operating cylinder, so that work by oil discharge passage
The speed for making oil cylinder carries out stepless speed regulation；Conversely, hydraulic oil flows into pumping plant after the open-top guiding valve of oil discharge passage, through oil inlet passage
Oil back chamber, such operating cylinder just can quick counter motions.It is unidirectional that although this one-way speed-regulating valve can realize workpiece
Stepless speed regulation, but when operating cylinder quickly returns, an open-top guiding valve of higher pressure is needed, so should not be in low tension loop
Middle use.Simultaneously because throttle mechanism is separately placed in valve body with guiding valve in cross bore so that the speed governing valve volume is big, structure
It is sufficiently complex, and mostly several fabrication holes are also needed to, outer leakage link is added, manufacture difficulty is also big, of high cost, is using
Huge shape is then limited in journey, can not be used in narrow installation space.
The content of the invention
The technical problem to be solved by the invention for the present situation of prior art is to provide simple in structure, compact, volumes
It is small, it can effectively keep a kind of constant one-way speed-regulating valve of flow.
Technical solution is used by the present invention solves above-mentioned technical problem：
A kind of one-way speed-regulating valve includes valve body, and the lower end of valve body is provided with screw plug, which is provided centrally with A mouthfuls,
B mouthfuls are provided in the middle part of valve body, pressure compensation spool is provided in valve body, which is provided centrally with check valve
Core, the nonreturn valve core are provided centrally with through flow hole, the first spring are provided between nonreturn valve core and the screw plug；Pressure compensation
Bushing is provided with above spool, the through-flow slot being connected with B mouthfuls is offered on the bushing, throttling is provided in the top of valve body
Valve pocket, the lower end of the throttling valve pocket are provided with and the matched valve port of the nonreturn valve core, the outer wall for the valve pocket that throttles and the valve
Through-flow chamber is formed between the inner wall of body, throttle valve puts on the throttling channel for being provided with and being connected with the through-flow chamber, bushing and institute
State throttling valve pocket between be provided with second spring.
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 throttling valve core, passes through section
The opening degree for moving up and down to adjust throttling channel of flow valve core.
The upper end of above-mentioned valve body is provided with adjusting set, and adjusting rod is assemblied in the center of the adjusting set.
The upper end of above-mentioned throttling valve pocket, which extends radially outwardly, is formed with position-limited edge, position-limited edge be fixed on the adjusting set with
Between valve body.
The upper end of above-mentioned nonreturn valve core is inclined-plane.
Gasket is arranged with outside the lower part of above-mentioned pressure compensation spool, the upper end of the first spring offsets with the gasket.
Above-mentioned adjusting set 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 one-way speed-regulating valve of the present invention, it is simple in structure, compact, it is small；It is being throttled by setting the valve pocket that throttles
Throttling channel in valve pocket is set, so as to play throttling action, and pressure compensation spool in valve body is set, is adjusted by pressure compensation
The openings of sizes of B mouthfuls of section, when the pressure difference increase between A mouthfuls and B mouthfuls, pressure compensation spool moves up, and B mouthfuls of opening reduces, when A mouthfuls
And the pressure difference between B mouthfuls reduces, pressure compensation spool moves down, and B mouthfuls of opening increase can so be kept in the aperture of throttling channel
On the premise of constant, in the case of ensure that load variation, the flow constant by B mouthfuls of outputs is constant.And when fluid is by B mouthfuls
When flowing into A mouthfuls, B mouthfuls of fluid, which are acted directly on the conical surface of nonreturn valve core, promotes nonreturn valve core to move down, and opens valve port, fluid
A mouthfuls are flowed by the through flow hole in nonreturn valve core.
Description of the drawings
Fig. 1 is the structure diagram of the present invention；
Fig. 2 is I portions enlarged drawing in Fig. 1.
Specific embodiment
The present invention is described in further detail below in conjunction with attached drawing embodiment.
It is as shown in Figure 1 to Figure 2 the structure diagram of the present invention,
Reference numeral therein is：A mouthfuls, B mouthfuls, valve body 1, through-flow chamber 1a, external screw thread 11, screw plug 2, pressure compensation spool 3,
Gasket 31, nonreturn valve core 4, through flow hole 4a, inclined-plane 4b, the first spring 41, bushing 5, through-flow slot 51, second spring 52, throttle valve
Set 6, throttling channel 61, position-limited edge 62, adjusting rod 7, adjusting set 8, sealing ring 9.
As shown in Figure 1 to Figure 2,
A kind of one-way speed-regulating valve includes valve body 1, and the lower end of valve body 1 is provided with screw plug 2, which is provided centrally with
A mouthfuls, the middle part of valve body 1 is provided with B mouthfuls, and pressure compensation spool 3 is provided in valve body 1, the pressure compensation spool 3 it is centrally disposed
There is nonreturn valve core 4, which is provided centrally with through flow hole 4a, first is provided between nonreturn valve core 4 and the screw plug 2
Spring 41；The top of pressure compensation spool 3 is provided with bushing 5, and the through-flow slot 51 being connected with B mouthfuls, valve are offered on the bushing 5
Throttling valve pocket 6 is provided in the top of body 1, the lower end of the throttling valve pocket 6 is provided with and the 4 matched valve of nonreturn valve core
Mouthful, throttle and be formed with through-flow chamber 1a between the outer wall of valve pocket 6 and the inner wall of the valve body 1, be provided on the valve pocket 6 that throttles with it is described
The throttling channel 61 that through-flow chamber 1a is connected is provided with second spring 52 between bushing 5 and the throttling valve pocket 6.
In embodiment, the upper end center of valve body 1 is provided with adjusting rod 7, and the lower end of the adjusting rod 7 is connected with throttling valve core
71, pass through the opening degree for moving up and down to adjust throttling channel 61 of throttling valve core 71.
In embodiment, the upper end of valve body 1 is provided with adjusting set 8, and adjusting rod 7 is assemblied in the center of the adjusting set 8.
Adjusting rod 7 is set, by adjusting rod 7 throttling valve core 71 is driven to move up and down, so as to adjust throttling channel 61
Opening degree, when throttling valve core 71 moves down, the opening of throttling channel 61 reduces, restriction effect enhancing, conversely, when throttling valve core 71
When moving up, the opening increase of throttling channel 61, restriction effect weakens.
In embodiment, the upper end of throttling valve pocket 6, which extends radially outwardly, is formed with position-limited edge 62, and position-limited edge 62 is fixed on described
Between adjusting set 8 and valve body 1.
In embodiment, the upper end of nonreturn valve core 4 is inclined-plane 4b.
In embodiment, gasket 31, upper end and the gasket of the first spring 41 are arranged with outside the lower part of pressure compensation spool 3
31 offset.
In embodiment, adjusting set 8 and 1 bolt of valve body.
In embodiment, external screw thread 11 is formed on the middle part outer wall of valve body 1.
In embodiment, the top of the external screw thread 11 is provided with sealing ring 9 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 9 ensure that valve
Leakproofness between body 1 and installation position.
Operation principle：
When fluid is from B mouthfuls into fashionable, the through-flow chamber 1a where through-flow slot 51 of the fluid through bushing 5 and then second spring 52
Interior, with the accumulation of fluid, oil pressure in through-flow chamber 1a increases, and oil pressure is acted on the inclined-plane 4b of nonreturn valve core 4, and overcomes the
The elastic force of one spring 41 pushes down on nonreturn valve core 4, so that the valve port on throttling valve pocket 6 is opened, through-flow chamber 1a inner fluids warp
The through flow hole 4a at 4 center of nonreturn valve core is flowed out from A mouthfuls.
When fluid is from A mouthfuls into fashionable, fluid is entered by the through flow hole 4a at 4 center of nonreturn valve core in throttling valve pocket 6, one
Point fluid flows into through-flow chamber 1a through throttling channel 61, and through-flow slot 51 of the fluid through bushing 5 in through-flow chamber 1a is flowed out from B mouthful.When B mouthfuls
Load becomes hour, and the pressure difference increase between A mouthfuls and B mouthfuls, differential pressure action will promote pressure-compensated valve on pressure compensation spool 3
Core 3 overcomes the active force of second spring 52 to move up, and with moving up for pressure compensation spool 3, B mouthfuls of aperture reduces, until
Reach equilibrium state；If B mouthfuls of loads become larger, the pressure difference between A mouthfuls and B mouthfuls reduces, and differential pressure action is on pressure compensation spool 3
It is upward make a concerted effort to reduce, pressure compensation spool 3 moves down under the active force of second spring 52, and B mouthful of aperture increases, directly
To reaching equilibrium state.Pressure difference between so A mouthfuls and B mouthfuls can ensure constant under the action of pressure compensation spool 3, this is just
In the case of ensure that load variation, if the aperture of throttling channel 61 is constant, it will be kept constant by the flow of B mouthfuls of outputs 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 (9)
1. a kind of one-way speed-regulating valve includes valve body (1), it is characterized in that：The lower end of the valve body (1) is provided with screw plug (2),
The screw plug (2) is provided centrally with A mouthfuls, and B mouthfuls are provided in the middle part of the valve body (1), pressure is provided in the valve body (1)
Force compensating spool (3), the pressure compensation spool (3) are provided centrally with nonreturn valve core (4), and the center of the nonreturn valve core (4) is set
Through flow hole (4a) is equipped with, the first spring (41) is provided between the nonreturn valve core (4) and the screw plug (2)；The pressure
Bushing (5) is provided with above force compensating spool (3), the through-flow slot (51) being connected with B mouthfuls, institute are offered on the bushing (5)
Throttling valve pocket (6) is provided in the top for the valve body (1) stated, the lower end of the throttling valve pocket (6) is provided with and the nonreturn valve core
(4) matched valve port is formed with through-flow chamber between the outer wall of the throttling valve pocket (6) and the inner wall of the valve body (1)
(1a) is provided with the throttling channel (61) being connected with the through-flow chamber (1a), the bushing on the throttling valve pocket (6)
(5) it is provided with second spring (52) between the throttling valve pocket (6).
2. a kind of one-way speed-regulating valve according to claim 1, it is characterized in that：The upper end center of the valve body (1) is set
Have adjusting rod (7), the lower end of the adjusting rod (7) is connected with throttling valve core (71), by throttling valve core (71) move up and down come
Adjust the opening degree of throttling channel (61).
3. a kind of one-way speed-regulating valve according to claim 2, it is characterized in that：The upper end of the valve body (1) is provided with tune
Section set (8), the adjusting rod (7) are assemblied in the center of the adjusting set (8).
4. a kind of one-way speed-regulating valve according to claim 3, it is characterized in that：The upper end of the throttling valve pocket (6) is radially
Position-limited edge (62) is extended outward to form, the position-limited edge (62) is fixed between the adjusting set (8) and valve body (1).
5. a kind of one-way speed-regulating valve according to claim 4, it is characterized in that：The upper end of the nonreturn valve core (4) is oblique
Face (4b).
6. a kind of one-way speed-regulating valve according to claim 5, it is characterized in that：The lower part of the pressure compensation spool (3)
Gasket (31) is arranged with outside, upper end and the gasket (31) of first spring (41) offset.
7. a kind of one-way speed-regulating valve according to claim 6, it is characterized in that：The adjusting set (8) and the valve body (1)
Bolt.
8. a kind of one-way speed-regulating valve according to claim 7, it is characterized in that：It is made on the middle part outer wall of the valve body (1)
There is external screw thread (11).
9. a kind of one-way speed-regulating valve according to claim 8, it is characterized in that：In the external screw thread on the valve body (1)
(11) sealing ring (9) is provided with above.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711391834.XA CN108105436A (en) | 2017-12-21 | 2017-12-21 | A kind of one-way speed-regulating valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711391834.XA CN108105436A (en) | 2017-12-21 | 2017-12-21 | A kind of one-way speed-regulating valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108105436A true CN108105436A (en) | 2018-06-01 |
Family
ID=62210661
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711391834.XA Withdrawn CN108105436A (en) | 2017-12-21 | 2017-12-21 | A kind of one-way speed-regulating valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108105436A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110242631A (en) * | 2019-05-27 | 2019-09-17 | 龙工（上海）精工液压有限公司 | Excavator speed governing valve |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20060266419A1 (en) * | 2003-10-01 | 2006-11-30 | Bosch Rexroth Ag | Feed pressure valve |
| CN201047365Y (en) * | 2007-05-28 | 2008-04-16 | 上海立新液压有限公司 | Governing valve |
| CN101655111A (en) * | 2008-08-21 | 2010-02-24 | 上海立新液压有限公司 | Novel overlapped speed regulating valve |
| CN102434517A (en) * | 2011-12-01 | 2012-05-02 | 宁波华液机器制造有限公司 | Speed adjusting valve |
| EP2518332A1 (en) * | 2011-04-28 | 2012-10-31 | CKD Corporation | Supply and discharge adjusting apparatus and supply and discharge adjusting system |
| CN205918957U (en) * | 2016-08-02 | 2017-02-01 | 台州市鹏和自动化设备有限公司 | One -way governing valve of liquid accuse |
-
2017
- 2017-12-21 CN CN201711391834.XA patent/CN108105436A/en not_active Withdrawn
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20060266419A1 (en) * | 2003-10-01 | 2006-11-30 | Bosch Rexroth Ag | Feed pressure valve |
| CN201047365Y (en) * | 2007-05-28 | 2008-04-16 | 上海立新液压有限公司 | Governing valve |
| CN101655111A (en) * | 2008-08-21 | 2010-02-24 | 上海立新液压有限公司 | Novel overlapped speed regulating valve |
| EP2518332A1 (en) * | 2011-04-28 | 2012-10-31 | CKD Corporation | Supply and discharge adjusting apparatus and supply and discharge adjusting system |
| CN102434517A (en) * | 2011-12-01 | 2012-05-02 | 宁波华液机器制造有限公司 | Speed adjusting valve |
| CN205918957U (en) * | 2016-08-02 | 2017-02-01 | 台州市鹏和自动化设备有限公司 | One -way governing valve of liquid accuse |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110242631A (en) * | 2019-05-27 | 2019-09-17 | 龙工（上海）精工液压有限公司 | Excavator speed governing valve |
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|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20180601 |
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| WW01 | Invention patent application withdrawn after publication |