CN104675781A - Compact type external controlled direct relief valve - Google Patents
Compact type external controlled direct relief valve Download PDFInfo
- Publication number
- CN104675781A CN104675781A CN201310639444.5A CN201310639444A CN104675781A CN 104675781 A CN104675781 A CN 104675781A CN 201310639444 A CN201310639444 A CN 201310639444A CN 104675781 A CN104675781 A CN 104675781A
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- China
- Prior art keywords
- valve body
- chamber
- spool
- sealing
- shutoff
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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
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- 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)
- Valve Housings (AREA)
- Safety Valves (AREA)
Abstract
The invention relates to a hydraulic valve in the field of hydraulic transmission and control technology, and particularly to a compact type external controlled direct relief valve. The compact type external controlled direct relief valve comprises a valve body, a sealing plug, a valve core, a spring and a block; the valve body is an outer shell of the external controlled direct relief valve, and multiple connecting channels interconnected with an executing element are arranged on the valve body along the axial direction; a hole way is arranged in the valve body, the sealing plug and the block are respectively in sealing connection to both ends of the valve body; the valve core is held in the hole way, and abutted the inner wall of the hole way in the manner of sealing; the hole way between the block and the valve core is a P cavity, a T cavity is arranged on the valve core, an A cavity is arranged on the sealing plug, and three cavities are respectively corresponding to the connecting channels; the spring is arranged in the P cavity, both ends of the spring are respectively abutted to one end of each of the block and the valve core, and the other end of the valve core is abutted with the sealing plug in the manner of sealing; the valve body can be glided along the axial direction of the hole way, so that the middle between the A cavity and the T cavity can be closed or interconnected. The compact type external controlled direct relief valve is stable in performance, compact in structure, low in cost, and easy to realize, and so on.
Description
Technical field
The present invention relates to the hydrovalve in hydraulic drive and control technical field, specifically a kind of compact type external control direct-acting overflow valve.
Background technique
At present in hydraulic transmission field, there is the hydrovalve of various function, form can select for artificer.But for relief valve, alternative direct-acting overflow valve product, because structural limitations, cannot design external control hydraulic fluid port; And being provided with the pilot operated compound relief valve of external control hydraulic fluid port, its complex structure, expensive, volume is large.In some application, need to determine when need pressure to release according to operating mode, very low to response time requirement again, now select precursor overflow valve to increase cost.Thus develop a kind of simple and compact for structure, stable and reliable for performance, the external control direct-acting overflow valve of low cost becomes problem demanding prompt solution.
Summary of the invention
For the problems referred to above, the object of the present invention is to provide a kind of compact type external control direct-acting overflow valve.This external control direct-acting overflow valve is simple and compact for structure, stable and reliable for performance, and cost is low.
The object of the invention is to be achieved through the following technical solutions:
The present invention includes valve body, sealing connector, spool, spring and shutoff, wherein valve body is the shell of described external control direct-acting overflow valve, and valve body has many connecting passages be connected with executive component vertically; Have duct in described valve body, described sealing connector and shutoff are sealedly attached to the two ends of valve body respectively; Described spool is placed in the duct of valve body, abuts with the inner wall sealing in described duct; Duct between described shutoff and spool is P chamber, and spool is provided with T chamber, and sealing connector is provided with A chamber, the connecting passage that described A chamber, T chamber and P chamber respectively corresponding described valve body are offered; Be provided with spring in described P chamber, the two ends of this spring are connected to one end of shutoff and spool respectively, and the other end of described spool seals with sealing connector and abuts; Described valve body can slide along the axial reciprocating in duct, realizes described A chamber with the closedown between T chamber or be communicated with.
Wherein: be ball face sealing between the other end of described spool and sealing connector; One end of described sealing connector is provided with the spherical groove be connected with described A chamber, and the other end of described spool has groove, is equipped with star seal ring in this groove, and described sealing connector and spool form ball face sealing by described spherical groove and star seal ring; On described valve body, the two ends in duct are respectively the conical surface for sealing, and described sealing connector and shutoff are connected with valve body screw thread respectively, between sealing connector and the conical surface of valve body one end and between the conical surface of shutoff and the valve body the other end, be respectively equipped with 0 shape seal ring;
Connecting passage on described valve body is respectively first connecting passage corresponding with A chamber, second connecting passage corresponding with T chamber and three connecting passage corresponding with P chamber, and first, second and third connecting passage described is radially offered respectively, and is parallel to each other; Described T chamber is that the part between spool two ends inside contracts and forms, and one end of described spool is abutted with the inner wall sealing in described duct by 0 shape seal ring; Described valve body, sealing connector, spool, spring and shutoff are coaxially arranged.
Advantage of the present invention and good effect are:
1. stable performance, safe and reliable.The principle that the present invention utilizes spring force and fluid to act on the power on spool to balance each other, spring is adopted to provide the precompression of ball face sealing, application star seal ring and 0 shape seal ring seal, they combine by the present invention dexterously, realize controlling the overflow of executive component active chamber according to different operating mode.
2. sealing is reliable.Form ball face sealing between spool of the present invention and sealing connector, the sphere of the conical surface on spool and sealing connector effectively can ensure that star seal ring is reliably fixed at work, safe and reliable.
3. compact structure.The present invention can select different spring diameter and wire diameter as required, and valve core movement scope very little (3 ~ 4mm), the external control direct-acting overflow valve of 3mm latus rectum, overall dimensions is at 65mm × 32mm × 25mm.
3. cost is low, easily realizes.The present invention adopts the seal ring of standard, and by the spherical design of ball face sealing on dismountable part, simplified processing process, except ball face sealing, not high to requirement on machining accuracy, cost is low, easily realizes.
Accompanying drawing explanation
Fig. 1 is content structure schematic diagram of the present invention;
Wherein: 1 is valve body, 2 is sealing connector, and 3 is spool, and 4 is spring, 5 is shutoff, and 6 is 0 shape seal ring, and 7 is 0 shape seal ring, and 8 is star seal ring, 9 is 0 shape seal ring, and 10 is 0 shape seal ring, and 11 is spherical groove, 12 is groove, and 13 is duct, and 14 is the conical surface, 15 is A chamber, and 16 is the first connecting passage, and 17 is T chamber, 18 is the second connecting passage, and 19 is P chamber, and 20 is the 3rd connecting passage.
Embodiment
Below in conjunction with accompanying drawing, the invention will be further described.
As shown in Figure 1, the present invention includes valve body 1, sealing connector 2, spool 3, spring 4 and shutoff 5, wherein valve body 1 is the shell of external control direct-acting overflow valve, and valve body 1 has many connecting passages be connected with executive component vertically from top to bottom; The connecting passage of the present embodiment is three, is respectively the first connecting passage 16, second connecting passage 18 and the 3rd connecting passage 20, three connecting passages are radially offered, and is parallel to each other.
The center of valve body 1 has duct 13 vertically, and the two ends in this duct 13 are respectively the conical surface 14 for sealing, and sealing connector 2 is threadedly connected to one end (upper end) of valve body 1, between sealing connector 2 and the conical surface of valve body 1 one end, be provided with 0 shape seal ring 6.Shutoff 5 is threadedly connected to the other end (lower end) of valve body 1, is provided with 0 shape seal ring 9 between shutoff 5 and the conical surface of valve body 1 the other end.
Spool 3 is placed in the duct 13 of valve body 1, is provided with spring 4 between the end face of spool 3 one end (lower end) and shutoff 5, and the two ends of this spring 4 are connected to the end face of shutoff 5 and spool 3 one end respectively.One end (lower end) of sealing connector 2 is positioned at duct 13, and seal with the other end (upper end) of spool 3 and abut, and the other end (upper end) sealing connector 2 is positioned at outside valve body 1.Be ball face sealing between the other end of spool 3 and sealing connector 2, one end of sealing connector 2 is provided with spherical groove 11, the other end of spool 3 has groove 12, is equipped with star seal ring 8 in this groove 12, and sealing connector 2 forms ball face sealing with spool 3 by spherical groove 11 and star seal ring 8.
Duct between shutoff 5 and spool 3 is P chamber 19, and spring 4 is contained in this P chamber 19, for ball face sealing provides precompression, P chamber 19 is corresponding with the 3rd connecting passage 20.Spool 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, and T chamber 17 is corresponding with the second connecting passage 18; One end of spool 3 is abutted with the inner wall sealing in duct 13 by 0 shape seal ring 10.Sealing connector 2 is provided with A chamber 15, and this A chamber 15 is corresponding with the first connecting passage 16, and the below in A chamber 15 is connected with spherical groove 11.
Valve body 1 of the present invention, sealing connector 2, spool 3, spring 4 and shutoff 5 are coaxially arranged, and valve body 3 can reciprocatingly slide along axial (3 ~ 4mm) among a small circle in duct 13, realizes the closedown between A chamber 15 with T chamber 17 or is communicated with
Working principle of the present invention is:
Time in P chamber 19 without pressure, ball face sealing can maintain the sealing within the scope of setting pressure under the precompression of spring 4, and the fluid between A chamber 15 with T chamber 17 cannot be communicated with.When the A chamber 15 internal pressure power acted on spool 3 exceedes the precompression of spring 4, spool 3 is backed down, slide downward, and star seal ring 8 separates with spherical groove 11, and A chamber 15 and T chamber 17 conducting, A chamber 15 internal pressure releases.When having pressure in P chamber 19, the P chamber 19 inner fluid power acted on spool 3 is greater than A chamber 15 internal pressure and acts on power on spool 3, and spool 3 upward sliding, star formula seal ring 8 abuts with spherical groove 11, and ball face sealing is more firm.The present invention according to system needs, can meet the requirement of oil pressure relief between 0.5 ~ 3MPa.
Assembly process of the present invention is:
First star seal ring 8 is arranged in the groove 12 of spool 3 the other end, 0 shape seal ring 7 and 0 shape seal ring 10 is arranged on respectively in the annular groove of sealing connector 2 and spool 3,0 shape seal ring 6,0 shape seal ring 9 is arranged on respectively the shoulder of sealing connector 2, shutoff 5, abuts with the conical surface 14 at two ends, duct 13 respectively; Spool 3 is loaded in the duct 13 of valve body 1, sealing connector 2 is installed on valve body 1; Spring 4 is put into valve body 1, under the end being placed in spool 3 one end; Finally, shutoff 5 is installed, screws.
In sum, the principle that the precompression that the present invention adopts fluid to act on power on spool 3 and spring 4 balances each other, after the A chamber 15 internal pressure power acted on spool 3 is greater than spring 4 precompression and P chamber 19 internal pressure acts on the power sum on spool 3, A chamber 15 pressure release, otherwise mutually seal between each chamber.The invention solves according to concrete operating mode, by the problem of the pressure off-load of executive component active chamber.
Claims (7)
1. a compact type external control direct-acting overflow valve, it is characterized in that: comprise valve body (1), sealing connector (2), spool (3), spring (4) and shutoff (5), wherein valve body (1) is the shell of described external control direct-acting overflow valve, and valve body (1) has many connecting passages be connected with executive component vertically; Have duct (13) in described valve body (1), described sealing connector (2) and shutoff (5) are sealedly attached to the two ends of valve body (1) respectively; Described spool (3) is placed in the duct (13) of valve body (1), abuts with the inner wall sealing of described duct (13); Duct between described shutoff (5) and spool (3) is P chamber (19), spool (3) is provided with T chamber (17), sealing connector (2) is provided with A chamber (15), the connecting passage that described A chamber (15), the corresponding described valve body (1) of T chamber (17) and P chamber (19) difference are offered; Be provided with spring (4) in described P chamber (19), the two ends of this spring (4) are connected to one end of shutoff (5) and spool (3) respectively, and the other end of described spool (3) seals with sealing connector (2) and abuts; Described valve body (3) can slide along the axial reciprocating of duct (13), realizes described A chamber (15) with the closedown between T chamber (17) or be communicated with.
2. by compact type external control direct-acting overflow valve according to claim 1, it is characterized in that: be ball face sealing between the other end of described spool (3) and sealing connector (2).
3. by compact type external control direct-acting overflow valve according to claim 2, it is characterized in that: one end of described sealing connector (2) is provided with the spherical groove (11) be connected with described A chamber (15), the other end of described spool (3) has groove (12), be equipped with star seal ring (8) in this groove (12), described sealing connector (2) and spool (3) form ball face sealing by described spherical groove (11) and star seal ring (8).
4. by compact type external control direct-acting overflow valve according to claim 1, it is characterized in that: the two ends in the upper duct (13) of described valve body (1) are respectively the conical surface (14) for sealing, described sealing connector (2) and shutoff (5) are threaded with valve body (1) respectively, between sealing connector (2) and the conical surface of valve body (1) one end and between the conical surface of shutoff (5) and valve body (1) the other end, be respectively equipped with 0 shape seal ring.
5. by compact type external control direct-acting overflow valve according to claim 1, it is characterized in that: the connecting passage on described valve body (1) is respectively first connecting passage (16) corresponding with A chamber (15), second connecting passage (18) corresponding with T chamber (17) and three connecting passage (20) corresponding with P chamber (19), first, second and third connecting passage described (16,18,20) is radially offered respectively, and is parallel to each other.
6. by the compact type external control direct-acting overflow valve described in claim 1 or 5, it is characterized in that: described T chamber (17) forms for the part between spool (3) two ends inside contracts, one end of described spool (3) is abutted with the inner wall sealing of described duct (13) by 0 shape seal ring.
7. by compact type external control direct-acting overflow valve according to claim 1, it is characterized in that: described valve body (1), sealing connector (2), spool (3), spring (4) and shutoff (5) are coaxially 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 true CN104675781A (en) | 2015-06-03 |
| CN104675781B 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) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4565209A (en) * | 1983-02-14 | 1986-01-21 | Herion-Werke Kg | Pressure regulating valve with feedback control |
| CN101776200A (en) * | 2010-01-26 | 2010-07-14 | 浙江三浪工业股份有限公司 | Variable-pressure overflow valve used for lubricating |
| CN101839359A (en) * | 2009-11-18 | 2010-09-22 | 南京工程学院 | Variable-difference relief valve |
| CN102042432A (en) * | 2010-12-10 | 2011-05-04 | 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
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4565209A (en) * | 1983-02-14 | 1986-01-21 | Herion-Werke Kg | Pressure regulating valve with feedback control |
| CN101839359A (en) * | 2009-11-18 | 2010-09-22 | 南京工程学院 | Variable-difference relief valve |
| CN101776200A (en) * | 2010-01-26 | 2010-07-14 | 浙江三浪工业股份有限公司 | Variable-pressure overflow valve used for lubricating |
| CN102042432A (en) * | 2010-12-10 | 2011-05-04 | 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 |
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| Publication number | Publication date |
|---|---|
| CN104675781B (en) | 2016-08-24 |
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