CN104074822B - A kind of manual return check valve - Google Patents
A kind of manual return check valve Download PDFInfo
- Publication number
- CN104074822B CN104074822B CN201410289615.0A CN201410289615A CN104074822B CN 104074822 B CN104074822 B CN 104074822B CN 201410289615 A CN201410289615 A CN 201410289615A CN 104074822 B CN104074822 B CN 104074822B
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- China
- Prior art keywords
- valve core
- core rod
- oil
- rod chamber
- communicated
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- Expired - Fee Related
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- Fluid-Pressure Circuits (AREA)
Abstract
The invention discloses a kind of manual return check valve, the pressure oil filler opening being positioned at valve body left upper portion is set in valve body, the pressure oil oil outlet of lower right side, the piston cavity in left side, middle part and right hand valve core bar chamber, middle part, piston cavity is communicated with valve core rod chamber, and pressure oil filler opening is communicated with piston cavity by horizontal-extending oil inlet passage on the same line, pressure oil oil outlet is communicated with valve core rod chamber by oil discharge passage, pressure oil filler opening is communicated with valve core rod chamber by drainback passage, in the valve core rod chamber at the place be connected with piston cavity in valve core rod chamber, spring cavity volume is set, spring one end is fixed on the termination of valve core rod, valve core rod is provided with oil return runner, the zigzag that oil return runner becomes to fall.Present invention, avoiding use ultrahigh pressure being controlled to oil, and then avoid the damage that can cause is agree to valve body; The damage avoiding when liquid outlet channel one side pressure is maximum jack-up spool and then spool is caused.
Description
Technical field
The present invention relates to control valve manufacturing technology field, especially a kind of manual return check valve.
Background technique
Spool is arranged in oil inlet passage by traditional one-way valve usually, spool is compressed under the pressure of pressure oil and the elastic force effect of returning spring simultaneously, when oil-feed or oil return, the pressure of liquid outlet channel internal pressure oil and the restoring force of spring is overcome by piston and then by spool jack-up by controlling oil, realize being communicated with of feed pathway and liquid outlet channel, realize oil-feed or the backflow of pressure oil.Under elevated pressure conditions, the load of liquid outlet channel side is very large, and its pressure acting on spool is very large, and controlling liquid import needs superhigh pressure liquid could by spool jack-up, and traditional Pilot operated check valve is only applicable to the conventional control oil of mesolow, and the pressure that can carry is lower.
Summary of the invention
The present invention is directed to the deficiencies in the prior art, a kind of manual return check valve is proposed, avoid control oil overcome the pressure of spring-return power and pressure oil simultaneously could by this technical problem of spool jack-up, avoid use ultrahigh pressure being controlled to oil, and then avoid the damage that can cause is agree to valve body; When avoiding pressure oil oil return with piston by this step of spool jack-up, the damage avoiding when liquid outlet channel one side pressure is maximum jack-up spool and then spool is caused.
In order to realize foregoing invention object, the invention provides following technological scheme:
A kind of manual return check valve, comprises valve body, valve core rod and piston,
Arrange in described valve body be positioned at described valve body left upper portion pressure oil filler opening, the pressure oil oil outlet of lower right side, the piston cavity on the left of middle part and the valve core rod chamber on the right side of middle part,
Described piston cavity is communicated with described valve core rod chamber and horizontal-extending on the same line,
Pressure oil filler opening is communicated with piston cavity by oil inlet passage, and described pressure oil oil outlet is communicated with described valve core rod chamber by oil discharge passage,
Described pressure oil filler opening is communicated with described valve core rod chamber by drainback passage,
Described piston and described piston cavity are slidably matched, and described valve core rod and described valve core rod chamber are slidably matched, and the termination of described piston is relative with the hemispherical ends of described valve core rod,
In the valve core rod chamber of described valve core rod chamber and described piston cavity joint, spring cavity volume is set, the diameter of described piston cavity is less than the diameter of described spring cavity volume and is less than the diameter of described valve core rod, spring one end is fixed on the termination of described valve core rod, the other end of spring is that free-end is arranged near valve core rod chamber
Described valve core rod is provided with oil return runner, the zigzag that described oil return runner becomes to fall, it is corresponding that position and the described drainback passage of oil return runner oil outlet connect position, place, described valve core rod chamber,
Oil return runner filler opening is positioned at pressure oil oil outlet.
A kind of manual return check valve of the present invention, by the design to oil inlet passage, oil discharge passage and piston cavity position, avoiding the oily pressure simultaneously overcoming spring-return power and oil discharge passage pressure oil of control could by this technical problem of spool jack-up, avoid use ultrahigh pressure being controlled to oil, and then avoid the damage that may cause valve body; The particular design of valve core rod and drainback passage, when avoiding pressure oil oil return with piston by this step of spool jack-up, the damage avoiding when liquid outlet channel one side pressure is maximum jack-up spool and then spool is caused.
Accompanying drawing explanation
Fig. 1 is the cross-sectional schematic of a kind of manual return check valve of the present invention;
Fig. 2 is the cross-sectional schematic of valve core rod of the present invention.
Embodiment
Describe the present invention below in conjunction with accompanying drawing, the description of this part is only exemplary and explanatory, should not have any restriction to protection scope of the present invention.
The manual return check valve of one as depicted in figs. 1 and 2, comprises valve body 1, valve core rod 3 and piston 2,
Arrange in valve body 1 be positioned at valve body 1 left upper portion pressure oil filler opening 11, the pressure oil oil outlet 12 of lower right side, the piston cavity 16 on the left of middle part and the valve core rod chamber on the right side of middle part,
Piston cavity 16 is communicated with valve core rod chamber and horizontal-extending on the same line,
Pressure oil filler opening 11 is communicated with piston cavity 16 by oil inlet passage 14, and pressure oil oil outlet 12 is communicated with valve core rod chamber by oil discharge passage 15,
Pressure oil filler opening 11 is communicated with valve core rod chamber by drainback passage,
Piston 2 and piston cavity 16 are slidably matched, and valve core rod 3 and valve core rod chamber are slidably matched, and the termination of piston 2 is relative with the hemispherical ends of valve core rod 3,
In the valve core rod chamber of valve core rod chamber and piston cavity 16 joint, spring cavity volume 17 is set, the diameter of piston cavity 16 is less than the diameter of spring cavity volume 17 and is less than the diameter of valve core rod 3, spring one end is fixed on the termination of valve core rod 3, the other end of spring is that free-end is arranged near valve core rod chamber, the other end is that free-end is arranged near valve core rod chamber, when valve core rod 3 is pushed, between free-end and valve body 1, produce active force
Valve core rod 3 is provided with oil return runner, the zigzag that oil return runner becomes to fall, the position of oil return runner oil outlet is corresponding with position, place, drainback passage connection valve core bar chamber,
Oil return runner filler opening is positioned at pressure oil oil outlet 12.
During use, control oil from piston cavity 16 opening input control oil, overcome the restoring force of spring by valve core rod 3 jack-up, pressure oil oil inlet passage 14 is communicated with pressure oil oil discharge passage 15, due to the design of pressure oil oil inlet passage 14 and pressure oil oil discharge passage oil discharge passage 15 relative position, valve core rod 3 is just subject to the pressure of certain pressure oil from both sides, relatively little.During oil return, only need rotary valve core bar 3, the runner filler opening of oil return runner 31 is communicated with drainback passage 13 and realizes oil return, after oil return completes, close drainback passage 13 at rotary valve core bar 3.
A kind of manual return check valve of the present invention, by the design to oil inlet passage, oil discharge passage and piston cavity position, avoiding the oily pressure simultaneously overcoming spring-return power and oil discharge passage pressure oil of control could by this technical problem of spool jack-up, avoid use ultrahigh pressure being controlled to oil, and then avoid the damage that may cause valve body; The particular design of valve core rod and drainback passage, when avoiding pressure oil oil return with piston by this step of spool jack-up, the damage avoiding when liquid outlet channel one side pressure is maximum jack-up spool and then spool is caused.
Claims (1)
1. a manual return check valve, is characterized in that, comprises valve body, valve core rod and piston,
Arrange in described valve body be positioned at described valve body left upper portion pressure oil filler opening, the pressure oil oil outlet of lower right side, the piston cavity on the left of middle part and the valve core rod chamber on the right side of middle part,
Described piston cavity is communicated with described valve core rod chamber and horizontal-extending on the same line,
Pressure oil filler opening is communicated with piston cavity by oil inlet passage, and described pressure oil oil outlet is communicated with described valve core rod chamber by oil discharge passage,
Described pressure oil filler opening is communicated with described valve core rod chamber by drainback passage,
Described piston and described piston cavity are slidably matched, and described valve core rod and described valve core rod chamber are slidably matched, and the termination of described piston is relative with the hemispherical ends of described valve core rod,
In the valve core rod chamber of described valve core rod chamber and described piston cavity joint, spring cavity volume is set, the diameter of described piston cavity is less than the diameter of described spring cavity volume and is less than the diameter of described valve core rod, spring one end is fixed on the termination of described valve core rod, the other end of spring is that free-end is arranged near valve core rod chamber
Described valve core rod is provided with oil return runner, the zigzag that described oil return runner becomes to fall, it is corresponding that position and the described drainback passage of oil return runner oil outlet connect position, place, described valve core rod chamber,
Oil return runner filler opening is positioned at pressure oil oil outlet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410289615.0A CN104074822B (en) | 2014-06-26 | 2014-06-26 | A kind of manual return check valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410289615.0A CN104074822B (en) | 2014-06-26 | 2014-06-26 | A kind of manual return check valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104074822A CN104074822A (en) | 2014-10-01 |
| CN104074822B true CN104074822B (en) | 2016-03-23 |
Family
ID=51596338
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410289615.0A Expired - Fee Related CN104074822B (en) | 2014-06-26 | 2014-06-26 | A kind of manual return check valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104074822B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104653538B (en) * | 2015-02-06 | 2018-03-13 | 东西方(宁海)航空科技发展有限公司 | A kind of unstressed valve body structure |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002048006A (en) * | 2000-08-02 | 2002-02-15 | Walbro Japan Inc | Auxiliary fuel supply device of carburetor |
| CN2500852Y (en) * | 2001-07-20 | 2002-07-17 | 陈立华 | Ultra-high-pressure hand rotary valve |
| CN201310662Y (en) * | 2008-11-14 | 2009-09-16 | 中国航空工业第一集团公司第一飞机设计研究院 | Manual-control one-way valve |
| CN201407222Y (en) * | 2009-03-20 | 2010-02-17 | 严光贤 | Manual control one-way valve |
| CN201687789U (en) * | 2010-04-02 | 2010-12-29 | 富阳通力机械制造有限公司 | Manual one-way valve |
| CN202790833U (en) * | 2012-08-16 | 2013-03-13 | 上海华岛液压设备制造有限公司 | Hand control and hydraulic control one-way control valve |
| CN203248789U (en) * | 2013-05-02 | 2013-10-23 | 嵊州市鼎沃五金机械厂 | Manual control check valve |
| CN203308820U (en) * | 2013-05-07 | 2013-11-27 | 宋锦荣 | Manual control one-way valve |
-
2014
- 2014-06-26 CN CN201410289615.0A patent/CN104074822B/en not_active Expired - Fee Related
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002048006A (en) * | 2000-08-02 | 2002-02-15 | Walbro Japan Inc | Auxiliary fuel supply device of carburetor |
| CN2500852Y (en) * | 2001-07-20 | 2002-07-17 | 陈立华 | Ultra-high-pressure hand rotary valve |
| CN201310662Y (en) * | 2008-11-14 | 2009-09-16 | 中国航空工业第一集团公司第一飞机设计研究院 | Manual-control one-way valve |
| CN201407222Y (en) * | 2009-03-20 | 2010-02-17 | 严光贤 | Manual control one-way valve |
| CN201687789U (en) * | 2010-04-02 | 2010-12-29 | 富阳通力机械制造有限公司 | Manual one-way valve |
| CN202790833U (en) * | 2012-08-16 | 2013-03-13 | 上海华岛液压设备制造有限公司 | Hand control and hydraulic control one-way control valve |
| CN203248789U (en) * | 2013-05-02 | 2013-10-23 | 嵊州市鼎沃五金机械厂 | Manual control check valve |
| CN203308820U (en) * | 2013-05-07 | 2013-11-27 | 宋锦荣 | Manual control one-way valve |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104074822A (en) | 2014-10-01 |
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