CN104675781B - A kind of compact external control direct-acting overflow valve - Google Patents
A kind of compact external control direct-acting overflow valve Download PDFInfo
- Publication number
- CN104675781B CN104675781B CN201310639444.5A CN201310639444A CN104675781B CN 104675781 B CN104675781 B CN 104675781B CN 201310639444 A CN201310639444 A CN 201310639444A CN 104675781 B CN104675781 B CN 104675781B
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- Prior art keywords
- chamber
- spool
- valve body
- sealing
- duct
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Classifications
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- 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
-
- 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
- F16K17/02—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side
- F16K17/04—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side spring-loaded
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Safety Valves (AREA)
- Valve Housings (AREA)
Abstract
The present invention relates to the hydraulic valve in hydraulic drive and control technical field, specifically a kind of compact external control direct-acting overflow valve, including valve body, seal connector, spool, spring and closure, valve body is the shell of external control direct-acting overflow valve, has a plurality of interface channel being connected with executive component on valve body vertically；Have duct in valve body, seal connector and block the two ends being sealedly attached to valve body respectively；Spool is placed in duct, abuts with the inner wall sealing in duct；Duct between closure and spool is P chamber, and spool is provided with T chamber, seals connector and is provided with A chamber, the interface channel that three chamber corresponding valve bodies respectively are offered；Being provided with spring in P chamber, the two ends of spring are connected to closure and one end of spool respectively, and the other end of spool seals against with sealing connector；Spool can sliding axially along duct, it is achieved closedown between A chamber with T chamber or connect.The present invention has stable performance, compact conformation, the advantage such as low cost, easy realization.
Description
Technical field
The present invention relates to the hydraulic valve in hydraulic drive and control technical field, specifically one
Plant compact external control direct-acting overflow valve.
Background technology
At present in hydraulic drive field, there is various function, the hydraulic valve of form is available for design
Person selects.But for overflow valve, alternative direct-acting overflow valve product is because structure limits
System, it is impossible to design external control hydraulic fluid port；And it being provided with the pilot operated compound relief valve of external control hydraulic fluid port, its structure is multiple
Miscellaneous, expensive, volume is big.In some application scenario, need according to when operating mode determines
Need to release pressure, the lowest to response time requirement again, now select precursor overflow valve to increase
Add cost.Thus develop a kind of simple and compact for structure, stable and reliable for performance, outside low cost
Control direct-acting overflow valve has become problem demanding prompt solution.
Summary of the invention
For the problems referred to above, it is an object of the invention to provide a kind of compact external control Direct Action Type and overflow
Stream valve.This external control direct-acting overflow valve is simple and compact for structure, stable and reliable for performance, low cost.
It is an object of the invention to be achieved through the following technical solutions:
The present invention includes valve body, seals connector, spool, spring and closure, and wherein valve body is institute
State the shell of external control direct-acting overflow valve, valve body has vertically a plurality of with executive component phase
The interface channel of connection；Duct, described sealing connector and closure is had the closeest in described valve body
Envelope is connected to the two ends of valve body；Described spool is placed in the duct of valve body, with described duct
Inner wall sealing abuts；Duct between described closure and spool is P chamber, and spool is provided with T chamber,
Seal connector and be provided with A chamber, the most corresponding described valve body in described A chamber, T chamber and P chamber is opened
If interface channel；Being provided with spring in described P chamber, the two ends of this spring are connected to closure respectively
And one end of spool, the other end of described spool seals against with sealing connector；Described spool can
Axial reciprocating along duct slides, it is achieved closedown between described A chamber and T chamber or connect.
Wherein: be ball face sealing between the other end and the sealing connector of described spool；Described sealing
One end of connector is provided with the spherical groove being connected with described A chamber, and the other end of described spool is opened
Having groove, be equipped with star sealing ring in this groove, described sealing connector and spool are by described
Spherical groove and star sealing ring form ball face sealing；On described valve body, the two ends in duct are respectively
It is connected with valve body screw thread respectively for the conical surface sealed, described sealing connector and closure, is sealing
Set respectively between the conical surface of connector and valve body one end and between closure and the conical surface of the valve body other end
There is O-ring seals；
Interface channel on described valve body is respectively first interface channel corresponding with A chamber and T
The second interface channel that chamber is corresponding and threeth interface channel corresponding with P chamber, described first and second,
Three interface channels are the most radially offered, and are parallel to each other；Described T chamber is between spool two ends
Part inside contract and form, one end of described spool is by the inwall of O-ring seals with described duct
Seal against；Described valve body, sealing connector, spool, spring and closure are coaxially disposed.
Advantages of the present invention with good effect is:
1. stable performance, safe and reliable.The present invention utilizes spring force and fluid to act on spool
On the principle that balances each other of power, use spring to provide the precompression of ball face sealing, application star is close
Seal and O-ring seals seal, and they are combined by the present invention dexterously, it is achieved root
According to different operating modes, the overflow of executive component working chamber is controlled.
2. seal reliable.Ball face sealing, spool is formed between spool of the present invention and sealing connector
On the conical surface and seal the sphere of connector that at work star sealing ring can be effectively ensured be reliable
Fixing, safe and reliable.
3. compact conformation.The present invention can select different spring diameter and line footpath, valve as required
Core range of movement the least (3～4mm), the external control direct-acting overflow valve of 3mm latus rectum, overall chi
Very little at 65mm × 32mm × 25mm.
3. low cost, easily realizes.The present invention uses the sealing ring of standard, by ball face sealing
Spherical design is on dismountable part, and simplified processing process, in addition to ball face sealing, to processing
Required precision is the highest, low cost, easily realizes.
Accompanying drawing explanation
Fig. 1 is present disclosure structural representation；
Wherein: 1 is valve body, 2 for sealing connector, and 3 is spool, and 4 is spring, and 5 is closure,
6 is O-ring seals, and 7 is O-ring seals, and 8 is star sealing ring, and 9 is O-ring seals,
10 is O-ring seals, and 11 is spherical groove, and 12 is groove, and 13 is duct, and 14 is cone
Face, 15 is A chamber, and 16 is the first interface channel, and 17 is T chamber, and 18 is the second interface channel,
19 is P chamber, and 20 is the 3rd interface channel.
Detailed description of the invention
The invention will be further described below in conjunction with the accompanying drawings.
As it is shown in figure 1, the present invention includes valve body 1, seals connector 2, spool 3, spring 4
And closure 5, wherein valve body 1 is the shell of external control direct-acting overflow valve, along axle on valve body 1
The a plurality of interface channel being connected with executive component is had to from top to bottom；The connection of the present embodiment
Passage is three, and respectively first interface channel the 16, second interface channel 18 and the 3rd connects
Passage 20, three interface channels are radially offered, and are parallel to each other.
Valve body 1 centrally along axially having duct 13, the two ends in this duct 13 are respectively used for
The conical surface 14 sealed, seals connector 2 and is threadedly connected to one end (upper end) of valve body 1, close
It is provided with O-ring seals 6 between envelope connector 2 and the conical surface of valve body 1 one end.Block 5 screw threads even
It is connected to the other end (lower end) of valve body 1, between closure 5 and the conical surface of valve body 1 other end
It is provided with O-ring seals 9.
Spool 3 is placed in the duct 13 of valve body 1, the end face of spool 3 one end (lower end)
And being provided with spring 4 between closure 5, the two ends of this spring 4 are connected to block 5 and spool respectively
The end face of 3 one end.The one end (lower end) sealing connector 2 is positioned at duct 13, and and valve
The other end (upper end) of core 3 seals against, and the other end (upper end) sealing connector 2 is positioned at
Outside valve body 1.It is ball face sealing between the other end and the sealing connector 2 of spool 3, seals connector
One end of 2 is provided with spherical groove 11, and the other end of spool 3 has groove 12, this groove 12
Inside it is equipped with star sealing ring 8, seals connector 2 with spool 3 by spherical groove 11 and star
Shape sealing ring 8 forms ball face sealing.
Duct between closure 5 and spool 3 is P chamber 19, and spring 4 is contained in this P chamber 19
In, for ball face sealing provide precompression, P chamber 19 is corresponding with the 3rd interface channel 20.Valve
Core 3 is provided with T chamber 17, and this T chamber 17 is that the part between spool 3 two ends inside contracts and forms,
T chamber 17 is corresponding with the second interface channel 18；O-ring seals 10 is passed through in one end of spool 3
Abut with the inner wall sealing in duct 13.Seal connector 2 and be provided with A chamber 15, this A chamber 15
Corresponding with the first interface channel 16, and the lower section in A chamber 15 is connected with spherical groove 11.
The valve body 1 of the present invention, sealing connector 2, spool 3, spring 4 and closure 5 coaxially set
Putting, spool 3 can reciprocatingly slide along the axial little scope (3～4mm) in duct 13, it is achieved A
Closedown between chamber 15 with T chamber 17 or connect.
The operation principle of the present invention is:
In P chamber 19 during no pressure, ball face sealing can maintain under the precompression of spring 4
Set the sealing in pressure limit, make the fluid between A chamber 15 with T chamber 17 to connect.
When A chamber 15 internal pressure power acts on the precompression that the power on spool 3 exceedes spring 4, spool
3 backed down, slide downward, star sealing ring 8 separates with spherical groove 11, A chamber 15 with
T chamber 17 turns on, and in A chamber 15, pressure releases.When there is pressure in P chamber 19, in P chamber 19
The power that fluid acts on spool 3 acts on the power on spool 3 more than A chamber 15 internal pressure power,
Spool 3 upward sliding, star formula sealing ring 8 abuts with spherical groove 11, and ball face sealing is more
Add firmly.The present invention can meet oil pressure relief between 0.5～3MPa according to system needs
Requirement.
The assembling process of the present invention is:
First star sealing ring 8 is arranged in the groove 12 of spool 3 other end, by close for O shape
Seal 7 and O-ring seals 10 are separately mounted in the annular groove of sealing connector 2 and spool 3,
It is separately mounted to seal connector 2, the shoulder of closure 5 by O-ring seals 6, O-ring seals 9
Portion, the conical surface 14 with two ends, duct 13 abuts respectively；Spool 3 is loaded the duct of valve body 1
In 13, sealing connector 2 is installed on valve body 1；Spring 4 is put into valve body 1, puts
Under the end of spool 3 one end；Finally, closure 5 is installed, screws.
In sum, the present invention uses the precompressed of power that fluid acts on spool 3 and spring 4
The principle that power balances each other, when A chamber 15 internal pressure power acts on the power on spool 3 more than spring 4
After precompression and P chamber 19 internal pressure power act on the power sum on spool 3, A chamber 15 pressure release,
Seal against each other between the most each chamber.The present invention solves according to concrete operating mode, by executive component work
The problem making the pressure off-load in chamber.
Claims (7)
1. a compact external control direct-acting overflow valve, it is characterised in that: include valve body (1),
Sealing connector (2), spool (3), spring (4) and closure (5), wherein valve body (1) is
The shell of described external control direct-acting overflow valve, valve body (1) has vertically a plurality of with hold
The interface channel that units is connected；Duct (13) is had in described valve body (1), described close
Envelope connector (2) and closure (5) are sealedly attached to the two ends of valve body (1) respectively；Described valve
Core (3) is placed in the duct (13) of valve body (1), with the inwall of described duct (13)
Seal against；Duct between described closure (5) and spool (3) is P chamber (19), valve
Core (3) is provided with T chamber (17), seals connector (2) and is provided with A chamber (15), described A
Offer on the corresponding described valve body (1) respectively of chamber (15), T chamber (17) and P chamber (19)
Interface channel；Being provided with spring (4) in described P chamber (19), the two ends of this spring (4) are divided
Be not connected to block (5) and one end of spool (3), the other end of described spool (3) with
Seal connector (2) to seal against；Described spool (3) can be along the axial reciprocating of duct (13)
Slide, it is achieved closedown between described A chamber (15) and T chamber (17) or connect.
2. the compact external control direct-acting overflow valve as described in claim 1, it is characterised in that:
It is ball face sealing between the other end and sealing connector (2) of described spool (3).
3. the compact external control direct-acting overflow valve as described in claim 2, it is characterised in that:
One end of described sealing connector (2) is provided with the spherical groove being connected with described A chamber (15)
(11), the other end of described spool (3) has groove (12), this groove (12) content
Being equipped with star sealing ring (8), described sealing connector (2) and spool (3) are by described sphere
Groove (11) and star sealing ring (8) form ball face sealing.
4. the compact external control direct-acting overflow valve as described in claim 1, it is characterised in that:
The two ends in the upper duct (13) of described valve body (1) are respectively the conical surface (14) for sealing, institute
State sealing connector (2) and closure (5) is threadeded with valve body (1) respectively, insert sealing
Fill between (2) and the conical surface of valve body (1) one end and block (5) and valve body (1) other end
The conical surface between be respectively equipped with O-ring seals.
5. the compact external control direct-acting overflow valve as described in claim 1, it is characterised in that:
It is logical that interface channel on described valve body (1) is respectively first connection corresponding with A chamber (15)
The second interface channel (18) that road (16) is corresponding with T chamber (17) and with P chamber (19)
The 3rd corresponding interface channel (20), described first, second and third interface channel (16,18,
20) the most radially offer, and be parallel to each other.
6. the compact external control direct-acting overflow valve as described in claim 1 or 5, its feature
It is: described T chamber (17) is that the part between spool (3) two ends inside contracts and forms, described
One end of spool (3) is abutted with the inner wall sealing of described duct (13) by O-ring seals.
7. the compact external control direct-acting overflow valve as described in claim 1, it is characterised in that:
Described valve body (1), sealing connector (2), spool (3), spring (4) and closure (5) are same
Axle is arranged.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310639444.5A CN104675781B (en) | 2013-11-30 | 2013-11-30 | A kind of compact external control direct-acting overflow valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310639444.5A CN104675781B (en) | 2013-11-30 | 2013-11-30 | A kind of compact external control direct-acting overflow valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104675781A CN104675781A (en) | 2015-06-03 |
| CN104675781B true CN104675781B (en) | 2016-08-24 |
Family
ID=53311244
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310639444.5A Active CN104675781B (en) | 2013-11-30 | 2013-11-30 | A kind of compact external control direct-acting overflow valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104675781B (en) |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3305092A1 (en) * | 1983-02-14 | 1984-08-16 | Herion-Werke Kg, 7012 Fellbach | PRESSURE CONTROL VALVE |
| CN101839359B (en) * | 2009-11-18 | 2012-01-11 | 南京工程学院 | Variable-difference relief valve |
| CN101776200B (en) * | 2010-01-26 | 2011-12-28 | 浙江三浪工业股份有限公司 | Variable-pressure overflow valve used for lubricating |
| CN102042432B (en) * | 2010-12-10 | 2012-05-23 | 北京工业大学 | Direct-acting water pressure overflow valve with damping piston |
| CN202317938U (en) * | 2011-10-18 | 2012-07-11 | 南通建宇精密机械制造有限公司 | Impact-free hydraulic system for planogrinder workbench |
| CN202468504U (en) * | 2011-12-01 | 2012-10-03 | 宁波东海液压件实业有限公司 | Direct-acting overflow valve |
| CN203176467U (en) * | 2013-04-09 | 2013-09-04 | 大连兴龙液压有限公司 | Direct-acting type overflow valve |
| CN203584947U (en) * | 2013-11-30 | 2014-05-07 | 中国科学院沈阳自动化研究所 | Compact outer control direct operated overflow valve |
-
2013
- 2013-11-30 CN CN201310639444.5A patent/CN104675781B/en active Active
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| Publication number | Publication date |
|---|---|
| CN104675781A (en) | 2015-06-03 |
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