CN201062598Y - Pilot discharge valve - Google Patents
Pilot discharge valve Download PDFInfo
- Publication number
- CN201062598Y CN201062598Y CN 200720072378 CN200720072378U CN201062598Y CN 201062598 Y CN201062598 Y CN 201062598Y CN 200720072378 CN200720072378 CN 200720072378 CN 200720072378 U CN200720072378 U CN 200720072378U CN 201062598 Y CN201062598 Y CN 201062598Y
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- Prior art keywords
- valve
- adjustment sleeve
- sleeve
- utility
- spring
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- 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.)
- Expired - Fee Related
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- 239000002243 precursor Substances 0.000 claims description 13
- 229910000831 Steel Inorganic materials 0.000 claims description 12
- 239000010959 steel Substances 0.000 claims description 12
- 238000007789 sealing Methods 0.000 abstract description 3
- 238000013016 damping Methods 0.000 description 4
- 210000000664 rectum Anatomy 0.000 description 4
- 239000002828 fuel tank Substances 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000003305 oil spill Substances 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
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Abstract
The utility model relates to a pilot operated overflow valve. The utility model comprises a valve sleeve, a valve core arranged inside the valve sleeve, and an adjusting sleeve fixedly connected with the valve sleeve, wherein the connection between the valve sleeve and the adjusting sleeve adopts a clipping groove, a spring is arranged inside the valve core, one end of the valve sleeve is held against the valve seat, the other end is hold against the bottom of the valve core, the other end of the valve seat is hold against a pilot valve core arranged inside the adjusting sleeve, an pressure adjusting spring is arranged inside the guiding valve core, one end of the pressure adjusting spring is held against the pilot valve core, the other end is held against the inner hole bottom part of an adjusting rod connected the adjusting sleeve through thread, and a radial hole used for an oil controlling channel is arranged in the middle of the valve core and the valve seat. Compared with the prior art, the structure of the utility model is simple, the utility model is easy to be processed, the operation is convenient, the internal leakage is small, the sealing performance is good, the multi-sage pressure control can be realized, and the utility model can be used in the pilot operated overflow valve of a medium drift diameter.
Description
Technical field
The utility model relates to the hydraulics field, concrete relates to a kind of precursor overflow valve.
Background technique
The relief valve of using in the hydraulic system, different by structure with working principle, divide two kinds of straight ejector half and type pilots, by the Placement difference, divide board-like, tubular type, overlapping, plug-in type etc.Pilot-type relief valve has been compared open and shut characteristic preferably with straight ejector half relief valve, and the plug-in type relief valve is applied to hydraulic system, can make the hydraulic valve block compact structure.Existing plug-in type precursor overflow valve, valve pocket and adjustment sleeve are same parts, and spool is to put into from the oil inlet end of valve pocket, blocks with back-up ring again, and spool and valve pocket can only be clearance seals, and internal leakage is big, is limited to little latus rectum precursor overflow valve.
The model utility content
Technical problem to be solved in the utility model is to overcome the problems of the prior art, provides a kind of valve pocket and adjustment sleeve to be divided into two parts, and valve pocket and spool adopt the awl sealing, and internal leakage is little, applicable to medium latus rectum precursor overflow valve.
In order to address the above problem the technical solution of the utility model is such:
A kind of precursor overflow valve, comprise valve pocket, be arranged on the valve core of valve pocket inside, the adjustment sleeve of fixedlying connected with valve pocket, it is characterized in that, described valve pocket is that groove-fastening type is connected with adjustment sleeve, valve core inside has spring, spring one end props up valve seat, and the other end props up the valve core bottom, and the valve seat the other end props up the pilot valve heart that is arranged on adjustment sleeve inside, the pilot valve interior portion has pressure adjusting spring, pressure adjusting spring one end props up the pilot valve heart, and the other end props up the adjustable lever endoporus bottom that is threaded with adjustment sleeve, has the radial hole that the oily passage of control is used in the middle of described valve core, the valve seat.
Described valve pocket one end has the dop of a section triangle that turns up, and described adjustment sleeve has the card lip that blocks dop, and card lip inner side surface has draw-in groove, and valve pocket and adjustment sleeve joint are fixed together it by externally applied forces.
Be provided with steel ball between the valve seat and the pilot valve heart, on valve seat, have a circular port that holds steel ball that communicates with radial hole, have the blind hole of holding steel ball at pilot valve in the heart.
Beneficial effect, the utility model is simple in structure, is convenient to processing, and easy to use, internal leakage is little, and good airproof performance can be realized multistage pressure control, can be used for medium latus rectum precursor overflow valve.
Description of drawings
Describe the utility model in detail below in conjunction with the drawings and specific embodiments;
Fig. 1 is the sectional structure schematic representation of a kind of precursor overflow valve of the utility model.
Wherein: the 1-valve pocket; The 2-seal ring; The 3-spool; The 4-spring; The 5-seal ring; The 6-valve seat; The 7-adjustment sleeve; 71-card lip; The 72-draw-in groove; 73-triangle projection; The 8-steel ball; The 9-guide valve core; The 10-pressure adjusting spring; The 11-seal ring; The 12-adjustable lever; The 13-seal ring; The 14-spring seat; The 15-back-up ring; The 16-spacer ring; The 17-locking nut; The A mouth is the pressure oil inflow entrance; The B mouth is the pressure oil outflow opening; The X mouth is the external control mouth; The Y mouth effluxes mouth for control oil.
Embodiment
For technological means, creation characteristic that the utility model is realized, reach purpose and effect is easy to understand, below in conjunction with concrete diagram, further set forth the utility model.
Referring to Fig. 1, a kind of precursor overflow valve of the utility model comprises a valve pocket 1, axially makes the two-stage step through-hole, and the conical surface is made in macropore and aperture jointing place, and spool 3 seals at conical surface place with valve pocket.Nearly conical surface place, valve pocket 1 macropore bottom makes a groove as going out oil pocket.Make 2 above radial holes on the valve pocket 1 and communicate, as overflowing hydraulic fluid port with going out oil pocket.A groove is made as the control oil pocket in valve pocket 1 macropore rear portion.Three grades of cylindricals are made in valve pocket 1 outside.Little cylindrical is made seal groove near left end.In cylindrical middle part make a seal groove, middle cylindrical right-hand member is made a groove, the cavity volume as control mouthful X gets out a hole in this groove, the inside that makes valve pocket 1 be interlinked to the outside.Big cylindrical right-hand member is made a triangular groove.A male cone (strobilus masculinus) is made in valve pocket 1 right side, and the triangle projection 73 for circular arc is made in this male cone (strobilus masculinus) and big cylindrical triangular groove intersection.An inner conical surface is made in valve pocket 1 right side, forms planar annular between inner conical surface and male cone (strobilus masculinus), and area of contact was little when valve pocket 1 and valve seat 6 were adjacent to, contact stabilization.
The two-stage hole is made in spool 3 inside, and aperture plays damping function, and macropore is put spring.Two narrow grooves are made at cylindrical middle part, make a sipes near right-hand member, can reduce the sliding friction that spool 3 and contacting of valve pocket 1 cause.The width of sipes must guarantee that sipes communicates with the X mouth in the working stroke scope all the time at spool 3, gets out a radial hole in sipes, and spool 3 inside are communicated with the X mouth.
Adjustment sleeve 7 outer part level Four.Right-hand member is a hexagonal, and usefulness is wrenched in rotation during installation.The hexagonal next door is a cylindrical, and the installing and locating guiding is used.An end outside thread is made in adjustment sleeve 7 outsides, installs and fixes usefulness.Outside thread and cylindrical intersection are made a seal groove.Adjustment sleeve 7 left ends are cylindricals, and this cylindrical and outside thread intersection are made a groove, efflux the cavity volume of mouthful Y as control oil.
Adjustment sleeve 7 inside are made the Pyatyi hole vertically.The middle part is a through flow hole.Adjustment sleeve 7 right-hand members are unthreaded holes, and pilot seal is used.The unthreaded hole left side is a tapped hole.Near making an arc groove in the end, back-up ring usefulness is installed, the arc groove place makes a radial hole, tears back-up ring open and uses.
Adjustment sleeve 7 left ends have the two-stage hole, and aperture is used to install valve seat 6, and macropore is used to install valve pocket 1.Make an arc groove in the macropore, as draw-in groove 71, macropore and cylindrical constitute the thin card lip 72 of wall thickness.
Valve seat 6 is made axial aperture, controls oily passage as the guide.Right-hand member is made step hole, and steel ball contact seal is used.
A blind hole is made in adjustable lever 12 inside, and mounting spring is used.Adjustable lever 12 outer part several portions.Left end is made outside thread, matches with the internal thread of adjustment sleeve 7.A groove is made on the outside thread right side, makes two radial holes in the groove, is communicated with inside and outside the adjustable lever, prevents to regulate pocketed oil in the time slot.The cylindrical that matches with adjustment sleeve 7 is made on the groove right side, makes seal groove on the cylindrical.A groove is made on the cylindrical right side, and groove and cylindrical are with conical surface transition.Adjustable lever 12 right-hand members are made hexagonal, during adjusting and the external key instrument be used.Outside thread is made on the hexagonal left side, is used with locking nut 17.
The connecting means of valve pocket 1 and adjustment sleeve 7:
Back-up ring 15 blocks adjustable lever 12, limits its axially movable limit position to the right.
Referring to Fig. 1, the A mouth is the pressure oil inflow entrance once more, communicates with the pressure piping of hydraulic system.The B mouth is the pressure oil outflow opening, communicates with fuel tank.The X mouth is the external control mouth, communicates with external world's partition or with the pressure port of other pressure regulator valve.The Y mouth communicates with fuel tank for control oil effluxes mouth.
This valve is installed in the manifold block plug-in opening that matches.
By rotation adjustable lever 12, spring 10 is produced and the corresponding compressive force of predetermined hydraulic pressure pressure.Adjustable lever can not become flexible because of vibration.
Below not use X mouth function and to use two kinds of situation explanations of X mouth function.
1) do not use X mouth function
The X mouth cuts off with extraneous.The pressure of A mouth arrives the spring chamber of spool 3 through the damping hole on the spool 3, and the aperture by valve seat 6 acts on the steel ball 8 again, produces end thrust.If this thrust is less than the compressive force of spring 10, then steel ball 8 withstands on the valve seat 8, the hydraulic pressure balance at two ends, spool 3 left and right sides, and spool 3 is pressed in left on the conical surface of valve pocket 1 by the thrust of spring 4, and A mouth and B mouth are separated.If this thrust is greater than the compressive force of spring 10, then steel ball 8 is open, pressure oil flows out from the Y mouth, flowing liquid produces pressure difference at the damping hole two ends of spool 3, this pressure difference is moved to the left spool 3 greater than the thrust of spring 4, and the A mouth is communicated with the B mouth, the pressure oil of A mouth is through B mouth oil sump tank, and the pressure of A mouth no longer raises.
2) use X mouth function
As compressive force by Regulation spring 10, set the oil pressure relief (being assumed to 20MPa) of valve, then connect by the pressure port of X mouth and other pressure regulator valve, can realize being lower than oil pressure relief with upward pressure.As the pressure regulator valve setting pressure of joining with the X mouth is 10MPa, then when the pressure of A mouth reaches 10MPa, pressure regulator valve is opened, the X mouth has oil spill to go out, and flowing liquid produces pressure difference at the damping hole two ends of spool 3, and this pressure difference is greater than the thrust of spring 4, spool 3 is moved to the left, the A mouth is communicated with the B mouth, and the pressure oil of A mouth is through B mouth oil sump tank, and the pressure of A mouth is kept 10MPa and no longer raise.
Compared with prior art, the utility model is simple in structure, is convenient to processing, and easy to use, internal leakage is little, and good airproof performance can be realized multistage pressure control, can be used for medium latus rectum precursor overflow valve.
More than show and described basic principle of the present utility model, major character and advantage of the present utility model.The technician of the industry should understand; the utility model is not restricted to the described embodiments; that describes in the foregoing description and the specification just illustrates principle of the present utility model; the utility model also has various changes and modifications under the prerequisite that does not break away from the utility model spirit and scope, and these changes and improvements all fall in claimed the utility model scope.The claimed scope of the utility model is defined by appending claims and equivalent thereof.
Claims (3)
1. precursor overflow valve, comprise valve pocket, be arranged on the valve core of valve pocket inside, the adjustment sleeve of fixedlying connected with valve pocket, it is characterized in that, described valve pocket is that groove-fastening type is connected with adjustment sleeve, valve core inside has spring, spring one end props up valve seat, and the other end props up the valve core bottom, and the valve seat the other end props up the pilot valve heart that is arranged on adjustment sleeve inside, the pilot valve interior portion has pressure adjusting spring, pressure adjusting spring one end props up the pilot valve heart, and the other end props up the adjustable lever endoporus bottom that is threaded with adjustment sleeve, has the radial hole that the oily passage of control is used in the middle of described valve core, the valve seat.
2. a kind of precursor overflow valve according to claim 1, it is characterized in that, described valve pocket one end has the dop of a section triangle that turns up, described adjustment sleeve has the card lip that blocks dop, card lip inner side surface has draw-in groove, and valve pocket and adjustment sleeve joint are fixed together it by externally applied forces.
3. a kind of precursor overflow valve according to claim 1 is characterized in that, is provided with steel ball between the valve seat and the pilot valve heart, has a circular port that holds steel ball that communicates with radial hole on valve seat, has the blind hole of holding steel ball in the heart at pilot valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200720072378 CN201062598Y (en) | 2007-07-11 | 2007-07-11 | Pilot discharge valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200720072378 CN201062598Y (en) | 2007-07-11 | 2007-07-11 | Pilot discharge valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201062598Y true CN201062598Y (en) | 2008-05-21 |
Family
ID=39450973
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200720072378 Expired - Fee Related CN201062598Y (en) | 2007-07-11 | 2007-07-11 | Pilot discharge valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201062598Y (en) |
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102162475A (en) * | 2011-04-13 | 2011-08-24 | 重庆大学 | Pressure control valve with sensing function |
| CN103089728A (en) * | 2011-11-02 | 2013-05-08 | 广西柳工机械股份有限公司 | Differential type pilot overflow valve |
| CN103122884A (en) * | 2011-11-18 | 2013-05-29 | 广西柳工机械股份有限公司 | Adjustable pilot overflow valve |
| CN103122882A (en) * | 2011-11-18 | 2013-05-29 | 广西柳工机械股份有限公司 | Adjustable pilot overflow valve |
| CN103899795A (en) * | 2012-12-24 | 2014-07-02 | 上海立新液压有限公司 | Counterbalance valve |
| CN104443018A (en) * | 2014-12-18 | 2015-03-25 | 临海市嘉美机械制造有限公司 | Unloading valve of hydraulic steering gear |
| CN104912862A (en) * | 2015-05-27 | 2015-09-16 | 长兴泗安科林植保专业合作社 | Hydraulic valve for agricultural vehicle |
| CN105333167A (en) * | 2014-06-27 | 2016-02-17 | 浙江三花制冷集团有限公司 | Reversing valve and sliding block thereof |
| CN105971959A (en) * | 2016-06-25 | 2016-09-28 | 玉环县现代工具有限公司 | Differential pressure type unloading safety valve |
| CN107345533A (en) * | 2017-08-31 | 2017-11-14 | 徐工集团工程机械有限公司 | Overload oil compensating valve and overload oil-supplementing system |
| CN107850227A (en) * | 2015-07-31 | 2018-03-27 | Ｋｙｂ株式会社 | Combination valve and the dual flow control valve for having used the combination valve |
| CN107940051A (en) * | 2017-11-15 | 2018-04-20 | 宁波文泽机电技术开发有限公司 | A kind of precursor overflow valve of quick response |
| CN111102263A (en) * | 2020-01-22 | 2020-05-05 | 浙江高宇液压机电有限公司 | Pilot-operated overflow valve with unloading control channel |
| CN113638930A (en) * | 2021-10-13 | 2021-11-12 | 山东泰丰智能控制股份有限公司 | Split overflow valve |
-
2007
- 2007-07-11 CN CN 200720072378 patent/CN201062598Y/en not_active Expired - Fee Related
Cited By (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102162475A (en) * | 2011-04-13 | 2011-08-24 | 重庆大学 | Pressure control valve with sensing function |
| CN103089728A (en) * | 2011-11-02 | 2013-05-08 | 广西柳工机械股份有限公司 | Differential type pilot overflow valve |
| CN103089728B (en) * | 2011-11-02 | 2016-03-16 | 广西柳工机械股份有限公司 | Differential type pilot overflow valve |
| CN103122884A (en) * | 2011-11-18 | 2013-05-29 | 广西柳工机械股份有限公司 | Adjustable pilot overflow valve |
| CN103122882A (en) * | 2011-11-18 | 2013-05-29 | 广西柳工机械股份有限公司 | Adjustable pilot overflow valve |
| CN103122882B (en) * | 2011-11-18 | 2016-03-09 | 广西柳工机械股份有限公司 | Adjustable pilot overflow valve |
| CN103122884B (en) * | 2011-11-18 | 2015-11-18 | 广西柳工机械股份有限公司 | Adjustable pilot overflow valve |
| CN103899795A (en) * | 2012-12-24 | 2014-07-02 | 上海立新液压有限公司 | Counterbalance valve |
| CN105333167A (en) * | 2014-06-27 | 2016-02-17 | 浙江三花制冷集团有限公司 | Reversing valve and sliding block thereof |
| CN105333167B (en) * | 2014-06-27 | 2018-02-09 | 浙江三花制冷集团有限公司 | Reversal valve and its sliding block |
| CN104443018A (en) * | 2014-12-18 | 2015-03-25 | 临海市嘉美机械制造有限公司 | Unloading valve of hydraulic steering gear |
| CN104912862A (en) * | 2015-05-27 | 2015-09-16 | 长兴泗安科林植保专业合作社 | Hydraulic valve for agricultural vehicle |
| CN107850227A (en) * | 2015-07-31 | 2018-03-27 | Ｋｙｂ株式会社 | Combination valve and the dual flow control valve for having used the combination valve |
| CN105971959A (en) * | 2016-06-25 | 2016-09-28 | 玉环县现代工具有限公司 | Differential pressure type unloading safety valve |
| CN107345533A (en) * | 2017-08-31 | 2017-11-14 | 徐工集团工程机械有限公司 | Overload oil compensating valve and overload oil-supplementing system |
| CN107345533B (en) * | 2017-08-31 | 2023-12-08 | 江苏徐工工程机械研究院有限公司 | Overload oil supplementing valve and overload oil supplementing system |
| CN107940051A (en) * | 2017-11-15 | 2018-04-20 | 宁波文泽机电技术开发有限公司 | A kind of precursor overflow valve of quick response |
| CN111102263A (en) * | 2020-01-22 | 2020-05-05 | 浙江高宇液压机电有限公司 | Pilot-operated overflow valve with unloading control channel |
| CN113638930A (en) * | 2021-10-13 | 2021-11-12 | 山东泰丰智能控制股份有限公司 | Split overflow valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080521 Termination date: 20160711 |