CN108916147A - A kind of check valve of carry potential overflow function - Google Patents
A kind of check valve of carry potential overflow function Download PDFInfo
- Publication number
- CN108916147A CN108916147A CN201810830440.8A CN201810830440A CN108916147A CN 108916147 A CN108916147 A CN 108916147A CN 201810830440 A CN201810830440 A CN 201810830440A CN 108916147 A CN108916147 A CN 108916147A
- Authority
- CN
- China
- Prior art keywords
- cavity
- hydraulic fluid
- fluid port
- steel ball
- spring
- 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.)
- Pending
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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
- F15B13/021—Valves for interconnecting the fluid chambers of an actuator
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Safety Valves (AREA)
- Check Valves (AREA)
Abstract
The present invention provides a kind of check valve of carry potential overflow function, including valve body, the valve body side is equipped with the first hydraulic fluid port and the second hydraulic fluid port, third hydraulic fluid port and the 4th hydraulic fluid port, the valve inner successively has the first cavity, second cavity and third cavity, sliding has a spool to separate second cavity in second cavity, the first hydraulic fluid port is connected on the left of the spool, first cavity is connected to third hydraulic fluid port, the second hydraulic fluid port and the 4th hydraulic fluid port are respectively communicated on the right side of the spool, it is additionally provided with a steel ball, first steel ball is blocked and separates first cavity and the second cavity, it is additionally provided with the second steel ball, the second cavity and third cavity are blocked and separated to second steel ball.When the present invention uses; when oil cylinder right end oil circuit blocks; when second oil pocket right end pressure rises; the second steel ball will be opened; high pressure oil flows out directly from overflow hole; pressure release is carried out to oil cylinder right end to realize, the sealing element and other component of oil cylinder are protected, to protect the component in oil cylinder and pipeline.
Description
Technical field
The invention belongs to hydraulic valve technical field, especially a kind of check valve of carry potential overflow function.
Background technique
Oil cylinder can all be used in many fields, and the oil inlet end of oil cylinder and the piston cross-section of oil revolving end are different, oil inlet end
Section it is big, therefore oil cylinder is at work, and in case of the failure of oil return pipe oil circuit blocking, oil inlet end continues for high pressure oil, meeting
So that generating biggish pressure in oil cylinder oil revolving end, to damage the component in oil circuit, especially in-oil cylinder sealing element is conventional
Check valve be simple unidirectional logical liquid effect, have no the effect of protection pipeline, how to allow check valve that there is overload to protect
Protective function is required for Hydraulic Field.
Summary of the invention
In order to solve prior art problem, a kind of check valve of carry potential overflow function provided by the invention can be returned in oil cylinder
When oil pipe line blocks, overflow high pressure oil realizes pressure release, to protect the component in oil cylinder and pipeline.
To achieve the above object, technical solution provided by the present invention is：A kind of check valve of carry potential overflow function, including valve
Body, it is characterised in that：The valve body side be equipped with the first hydraulic fluid port and the second hydraulic fluid port, the valve body other side be equipped with third hydraulic fluid port and
4th hydraulic fluid port, the valve inner successively have the first cavity, the second cavity and third cavity, second cavity from left to right
Interior sliding has a spool to separate second cavity, is connected to the first hydraulic fluid port on the left of the spool, the first cavity connection the
Three hydraulic fluid ports, the spool right side are respectively communicated with the second hydraulic fluid port and the 4th hydraulic fluid port, are equipped with the first spring base, institute in first cavity
Valve body left end to be stated to seal first cavity equipped with a plug, the first spring base level sliding is set on the plug,
It is equipped with one first steel ball on the right side of first spring base, is equipped with the first spring between plug on the left of first spring base and forces
First cavity and the second cavity are blocked and separated to first steel ball, first steel ball, and the valve body right end is equipped with one
There is overflow hole to be connected to the third cavity, have second spring seat in the third cavity for emergency valve seat, the emergency valve seat,
Second spring seat left end is equipped with the second steel ball, and the second bullet is equipped between the second spring seat right end and the emergency valve seat
Spring, the second spring force the second steel ball to be blocked and separate the second cavity and third cavity.
Preferably, the plug and the emergency valve seat are threadingly attached to the valve body, ease of assembly.
Preferably, first hydraulic fluid port is connected with a quick pin end, and second hydraulic fluid port is connected with a quick maternal interface,
Convenient for assembling.
The present invention has the advantages that：
The present invention when the second oil pocket right end pressure rises, will open second in use, when oil cylinder right end oil circuit blocks
Steel ball, high pressure oil flow out directly from overflow hole, thus realize to oil cylinder right end carry out pressure release, protect oil cylinder sealing element and its
His component, to protect the component in oil cylinder and pipeline.
Detailed description of the invention
Fig. 1 is perspective view of the invention；
Fig. 2 is the partial sectional view of main view of the invention；
Fig. 3 is the face the A-A cross-sectional view of Fig. 2；
Fig. 4 is the connection schematic diagram of use state of the present invention.
Specific embodiment
With reference to the accompanying drawing and specific embodiment, the invention will be further described：
Referring to figs. 1 to Fig. 4, a kind of check valve of carry potential overflow function described in the present embodiment, including valve body 1,1 side of valve body
Equipped with the first hydraulic fluid port 2 and the second hydraulic fluid port 3,1 other side of valve body is equipped with third hydraulic fluid port 4 and the 4th hydraulic fluid port 5, in the valve body 1
Portion successively has the first cavity 6, the second cavity 7 and third cavity 8 from left to right, and sliding has a spool in second cavity 7
16 separate second cavity 7, and the first hydraulic fluid port 2 is connected on the left of the spool 16, and first cavity 6 is connected to third hydraulic fluid port 4,
It is respectively communicated with the second hydraulic fluid port 3 and the 4th hydraulic fluid port 5 on the right side of the spool 16, is equipped with the first spring base 9, institute in first cavity 6
It states 1 left end of valve body to seal first cavity 6 equipped with a plug 15, the horizontal sliding of first spring base 9 is set to described stifled
On first 15, it is equipped with one first steel ball 10 on the right side of first spring base 9, is set between 9 left side of the first spring base and plug 15
There is the first spring 17 to force first steel ball 10, first steel ball 10 is blocked and separates first cavity 6 and the second sky
Chamber 7,1 right end of valve body are equipped with an emergency valve seat 13, and there is the emergency valve seat 13 overflow hole 14 to be connected to the third cavity
8, there is in the third cavity 8 second spring seat 11,11 left end of second spring seat is equipped with the second steel ball 12, and described second
Second spring 18 is equipped between 11 right end of spring base and the emergency valve seat 13, the second spring 18 forces the second steel ball 12 stifled
Firmly and separate the second cavity 7 and third cavity 8.
Specifically, the plug 15 is threadingly attached to the valve body 1 with the emergency valve seat 13.
Specifically, first hydraulic fluid port 2 is connected with a quick pin end 19, it is quickly female that second hydraulic fluid port 3 is connected with one
Interface 20.
The present embodiment further includes having an oil cylinder 21, a fuel tank 22, and the left chamber of oil cylinder 21 is connected to third hydraulic fluid port 3, oil cylinder 21
Right chamber is connected to the 4th hydraulic fluid port 4, and when the left chamber oil inlet of oil cylinder 21, piston rod stretches out, and the first hydraulic fluid port 2 and the second hydraulic fluid port 3 are connected to
Fuel tank 22, when the present embodiment works, when the first 2 oil inlet of hydraulic fluid port, piston rod stretches out, when fuel cut-off, in the first spring 17
Under effect, the first steel ball 10 is moved to right, and has blocked oil circuit, and the oil of 21 left chamber of oil cylinder would not flow back, and such piston rod would not return
Fall drop；When the second 3 oil inlet of hydraulic fluid port, oil flows to the right chamber of oil cylinder 21 by the second cavity 7, and piston rod is withdrawn, meanwhile, second
The oil pressure of cavity 7 pushes spool 16 to move to left, and spool 16 opens the first steel ball 10, and the oil of 21 left chamber of oil cylinder is enabled to pass through third
Hydraulic fluid port 4 enters the left chamber of the second cavity 7 using the first cavity 6, then returns to fuel tank 22 from the first hydraulic fluid port 2.It needs exist for
Bright, the forced area of 16 left end of spool is smaller than the forced area of 16 right end of spool.Because there are areas for 21 or so chamber of oil cylinder
Difference, when the right end oil circuit of oil cylinder 21 blocks, left end is continued for high pressure oil, and at this time 21 right end of oil cylinder will form one
The state of super-pressure, the sealing element in oil cylinder 21 will damage, or even will appear and oil cylinder 21 is supportted bad situation, at this time, peace
Full valve seat 13 just plays a role, and the pressure of 21 right end of oil cylinder is identical as 7 right end of the second oil pocket, when in 7 right end pressure of the second oil pocket
When rising, the second steel ball 12 will be opened, high pressure oil flows out directly from overflow hole 14, lets out to realize to 21 right end of oil cylinder
Pressure protects the sealing element of oil cylinder 21.
The examples of implementation of the above are only the preferred embodiments of the invention, and implementation model of the invention is not limited with this
It encloses, therefore all shapes according to the present invention, changes made by principle, should all be included within the scope of protection of the present invention.
Claims (3)
1. a kind of check valve of carry potential overflow function, including valve body, it is characterised in that：The valve body side is equipped with the first hydraulic fluid port and the
Two hydraulic fluid ports, the valve body other side are equipped with third hydraulic fluid port and the 4th hydraulic fluid port, and the valve inner successively has first from left to right
Cavity, the second cavity and third cavity, the interior sliding of second cavity have a spool to separate second cavity, the spool
Left side is connected to the first hydraulic fluid port, and first cavity is connected to third hydraulic fluid port, is respectively communicated with the second hydraulic fluid port and the 4th on the right side of the spool
Hydraulic fluid port, first cavity is interior to be equipped with the first spring base, and the valve body left end is equipped with a plug and seals first cavity, institute
It states the sliding of the first spring base level to be set on the plug, is equipped with one first steel ball on the right side of first spring base, described first
The first spring is equipped on the left of spring base between plug and forces first steel ball, first steel ball is blocked and separates described the
One cavity and the second cavity, the valve body right end are equipped with an emergency valve seat, and the emergency valve seat has overflow hole connection described the
Three cavitys, the third cavity is interior to have second spring seat, and second spring seat left end is equipped with the second steel ball, second bullet
Second spring is equipped between spring abutment right end and the emergency valve seat, the second spring forces the second steel ball to be blocked and separates second
Cavity and third cavity.
2. a kind of check valve of carry potential overflow function according to claim, it is characterised in that：The plug and the safety
Valve seat is threadingly attached to the valve body.
3. a kind of check valve of carry potential overflow function according to claim, it is characterised in that：First hydraulic fluid port is connected with
One quick pin end, second hydraulic fluid port are connected with a quick maternal interface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810830440.8A CN108916147A (en) | 2018-07-26 | 2018-07-26 | A kind of check valve of carry potential overflow function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810830440.8A CN108916147A (en) | 2018-07-26 | 2018-07-26 | A kind of check valve of carry potential overflow function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108916147A true CN108916147A (en) | 2018-11-30 |
Family
ID=64418326
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810830440.8A Pending CN108916147A (en) | 2018-07-26 | 2018-07-26 | A kind of check valve of carry potential overflow function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108916147A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110323389A (en) * | 2019-04-10 | 2019-10-11 | 重庆金康动力新能源有限公司 | Pressure relief pipe, battery pressure relief system and battery case |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1126203A1 (en) * | 2000-02-16 | 2001-08-22 | TGK Co., Ltd. | Solenoid pilot operated valve |
| JP2001263516A (en) * | 2000-03-15 | 2001-09-26 | Iseki & Co Ltd | Relief valve |
| CN101504018A (en) * | 2009-03-13 | 2009-08-12 | 湖州生力液压有限公司 | Lifting and steering hydraulic integrated valve with manual convenience |
| CN101655010A (en) * | 2009-09-18 | 2010-02-24 | 陶宾 | Dual-protection single hydraulic prop |
| CN106015140A (en) * | 2016-06-11 | 2016-10-12 | 宁波文泽机电技术开发有限公司 | Balance valve |
| CN107795451A (en) * | 2017-11-29 | 2018-03-13 | 欧盾科技有限公司 | Integrated high pressure oil pump |
-
2018
- 2018-07-26 CN CN201810830440.8A patent/CN108916147A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1126203A1 (en) * | 2000-02-16 | 2001-08-22 | TGK Co., Ltd. | Solenoid pilot operated valve |
| JP2001263516A (en) * | 2000-03-15 | 2001-09-26 | Iseki & Co Ltd | Relief valve |
| CN101504018A (en) * | 2009-03-13 | 2009-08-12 | 湖州生力液压有限公司 | Lifting and steering hydraulic integrated valve with manual convenience |
| CN101655010A (en) * | 2009-09-18 | 2010-02-24 | 陶宾 | Dual-protection single hydraulic prop |
| CN106015140A (en) * | 2016-06-11 | 2016-10-12 | 宁波文泽机电技术开发有限公司 | Balance valve |
| CN107795451A (en) * | 2017-11-29 | 2018-03-13 | 欧盾科技有限公司 | Integrated high pressure oil pump |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110323389A (en) * | 2019-04-10 | 2019-10-11 | 重庆金康动力新能源有限公司 | Pressure relief pipe, battery pressure relief system and battery case |
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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 | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20181130 |