CN108131345B - A kind of high-damping direct-acting overflow valve - Google Patents
A kind of high-damping direct-acting overflow valve Download PDFInfo
- Publication number
- CN108131345B CN108131345B CN201711391941.2A CN201711391941A CN108131345B CN 108131345 B CN108131345 B CN 108131345B CN 201711391941 A CN201711391941 A CN 201711391941A CN 108131345 B CN108131345 B CN 108131345B
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- Prior art keywords
- damping
- spool
- valve
- valve body
- mouthfuls
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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
- F15B13/024—Pressure relief valves
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Safety Valves (AREA)
Abstract
The invention discloses a kind of high-damping direct-acting overflow valves, it include valve body, the lower end of valve body vertically offers P mouthfuls, T mouthfuls are offered on the lower sides of valve body, valve port is formed between P mouthfuls and T mouthfuls, the spool matched with valve port is vertically provided in valve body, the spool is provided centrally with through flow hole, the top of spool is arranged with damping sleeve, the damping sleeve is provided centrally with damping plunger, it damps in plunger insertion through flow hole, there are damping clearances between the outer wall of damping plunger and the inner wall of through flow hole, damping cavity is formed between the upper surface and damping sleeve of spool, the damping cavity is connected through through flow hole with P mouthfuls, the spring matched with spool is provided with outside damping sleeve.The advantage is that: it is compact-sized, using pressure caused by damping cavity, while guaranteeing the conveyance capacity of valve, greatly reduce the required rigidity of spring, to greatly reduce the overall volume of valve, and oil pressure adjusting is carried out using damping cavity, can guarantee stationarity when opening and closing.
Description
Technical field
The present invention relates to overflow valve manufacturing technology field, a kind of especially high-damping direct-acting overflow valve.
Background technique
Overflow valve is common pressure control valve in hydraulic system, can be used as level pressure overflow valve or safety valve.Overflow valve
Be generally used for pressure control aspect, and existing overflow valve is different by structure and working principle, can be divided into direct-acting overflow valve and
Pilot operated compound relief valve.Although direct-acting overflow valve has many advantages, such as that structure is simple, high sensitivity, because unlike pilot-operated type overflows
Multiple dampings are arranged in stream valve like that, therefore usually when inlet pressure fluctuates big application, spool can generate vibration, thus cause
It utters long and high-pitched sounds, biggish damage is caused to valve seat and spring；In addition in big flow in application, the flow in order to ensure overflow presses adjusting
Power not will cause too much influence, and the aperture of valve seat will be made greatly, therefore the pressure spring rigidity usually to be designed is very big, makes
Integral direct-acting overflow valve volume is excessive.
Such as application No. is 201310162724.1, the patent of invention of entitled " a kind of direct-acting overflow valve " discloses one kind
Direct-acting overflow valve mainly includes valve pocket, valve seat, poppet valve core, compression spring, regulator and first seal, the invention
Although structure simply directly controls inlet pressure by poppet valve core and compression spring, it lacks damping element, in inlet flow
In the case where amount and pressure oscillation, poppet valve core will cause system pressure fluctuation, noise and reduce it in the state vibrated up and down
The service life of operation element.
Summary of the invention
The technical problem to be solved by the invention for the present situation of prior art is to provide compact-sized, small in size, operations
A kind of stable high-damping direct-acting overflow valve.
The technical scheme of the invention to solve the technical problem is:
A kind of high-damping direct-acting overflow valve includes valve body, and the lower end of valve body vertically offers P mouthfuls, the lower part of valve body
T mouthfuls are offered on side wall, and valve port is formed between P mouthfuls and T mouthfuls, the spool matched with valve port is vertically provided in valve body, it should
Spool is provided centrally with through flow hole, and the top of spool is arranged with damping sleeve, which is provided centrally with damping plunger, resistance
Buddhist nun's plunger is inserted into through flow hole, is damped between the outer wall of plunger and the inner wall of the through flow hole there are damping clearance, spool it is upper
Be formed with damping cavity between end face and the damping sleeve, which is connected through through flow hole with P mouthfuls, be provided with outside damping sleeve with
The spring that the spool matches.
The technical measures of optimization further include:
Regulator bolts are provided in the top of above-mentioned valve body, the upper end of spring offsets with the regulator bolts.
Convex body is provided in the middle part of above-mentioned spool, the lower end of spring and the upper surface of the convex body offset.
It is located at below the convex body on above-mentioned spool and is provided with tapered portion, tapered portion is matched with valve port.
The lower part of above-mentioned through flow hole is provided with undergauge section.
The lower end of above-mentioned through flow hole, which is expanded, is formed with bellmouth.
Bolt seal circle is provided between above-mentioned regulator bolts and the valve interior wall.
In in the valve body, the central upper portion of regulator bolts is provided with Hexagon hole for above-mentioned regulator bolts entirety precession.
The upper end of above-mentioned valve body, which is located above the regulator bolts, is provided with limit stop ring.
It is formed with external screw thread on the outer wall of above-mentioned valve body, the externally threaded top is provided with valve seal on valve body
Circle.
A kind of high-damping direct-acting overflow valve of the present invention, it is compact-sized, it is small in size；It passes through being provided centrally in spool
Through flow hole, and it is arranged with damping sleeve on spool top, the damping plunger at the center of damping sleeve is inserted into through flow hole, the upper end of spool
It is formed with damping cavity between face and damping sleeve, damps between the outer wall of plunger and the inner wall of through flow hole that there are damping clearances, so
Form high-damping structure；Oil liquid enters from through flow hole and generates downward pressure in damping cavity to spool, and P mouthfuls of oil pressure is to valve
Core generates upward power, pushes spool to move upwards and open valve under the pressure of the two, is guaranteeing the same of the conveyance capacity of valve
When, the required rigidity of spring is greatly reduced, the overall volume of valve can be greatly reduced, and carry out oil pressure tune using damping cavity
Section can guarantee stationarity when opening and closing.
Detailed description of the invention
Fig. 1 is structural schematic diagram of the invention；
Fig. 2 is the portion A enlarged drawing in Fig. 1；
Fig. 3 is the portion B enlarged drawing in Fig. 1.
Specific embodiment
The present invention will be described in further detail below with reference to the embodiments of the drawings.
It is as shown in Figure 1 to Figure 3 structural schematic diagram of the invention,
Appended drawing reference therein are as follows: P mouthfuls, T mouthfuls, valve body 1, external screw thread 11, valve seals 12, spool 2, through flow hole 21,
Undergauge section 21a, bellmouth 21b, convex body 22, tapered portion 23, damping sleeve 3, damping cavity 3a, damping plunger 4, damping clearance 4a, bullet
Spring 5, regulator bolts 6, bolt seal circle 61, Hexagon hole 62, limit stop ring 7.
As shown in Figure 1 to Figure 3,
A kind of high-damping direct-acting overflow valve, includes valve body 1, and the lower end of valve body 1 vertically offers P mouthfuls, under valve body 1
T mouthfuls are offered on portion's side wall, and valve port is formed between P mouthfuls and T mouthfuls, the spool matched with valve port is vertically provided in valve body 1
2, which is provided centrally with through flow hole 21, and the top of spool 2 is arranged with damping sleeve 3, which is provided centrally with
Damp plunger 4, damping plunger 4 be inserted into through flow hole 21 in, damp plunger 4 outer wall and the through flow hole 21 inner wall between there are
Damping clearance 4a is formed with damping cavity 3a between the upper surface of spool 2 and the damping sleeve 3, damping cavity 3a is through through flow hole 21
It is connected with P mouthfuls, the spring 5 matched with the spool 2 is provided with outside damping sleeve 3.
In embodiment, regulator bolts 6 are provided in the top of valve body 1, the upper end of spring 5 offsets with the regulator bolts 6.
In embodiment, the middle part of spool 2 is provided with convex body 22, and the lower end of spring 5 and the upper surface of the convex body 22 offset.
In embodiment, the lower section on spool 2 positioned at the convex body 22 is provided with tapered portion 23, and tapered portion 23 and valve port match
It closes.
In embodiment, the lower part of through flow hole 21 is provided with undergauge section 21a.
In embodiment, the lower end of through flow hole 21, which is expanded, is formed with bellmouth 21b.
The setting of undergauge section 21a can further increase damping, keep the operation of valve more stable；And bellmouth 21b then can
Buffer function is enough played, the instantaneous variation of oil pressure is avoided.
In embodiment, bolt seal circle 61 is provided between 1 inner wall of regulator bolts 6 and the valve body.
In embodiment, for the whole precession of regulator bolts 6 in the valve body 1, the central upper portion of regulator bolts 6 is provided with interior six
Corner apertures 62.
In embodiment, the top that the upper end of valve body 1 is located at the regulator bolts 6 is provided with limit stop ring 7.
By the adjusting of 6 upper and lower position of regulator bolts, it can achieve the purpose that the pretightning force of adjustment spring 5, thus to overflowing
The cracking pressure of stream valve is adjusted；The Hexagon hole 62 being arranged by the central upper portion of regulator bolts 6, can easily twist
Dynamic regulator bolts 6, to adjust its position.The limit stop ring 7 of upper end limits the upper limit of 6 position of regulator bolts adjustment.
In embodiment, it is formed with external screw thread 11 on the outer wall of valve body 1, is provided on valve body 1 in the top of the external screw thread 11
Valve seals 12.
When this overflow valve is installed, installation position is bolted in by external screw thread 11, and the setting of valve seals 12 ensure that
Leakproofness between valve body 1 and installation position.
Working principle:
This direct-acting overflow valve is provided centrally with through flow hole 21 in spool 2, the upper end of the through flow hole 21 and damping cavity
3a is connected, and is arranged with damping sleeve 3 on the top of spool 2, and the damping plunger 4 at 3 center of damping sleeve is inserted into through flow hole 21, resistance
There are damping clearance 4a between the outer wall of Buddhist nun's plunger 4 and the inner wall of through flow hole 21；P mouthfuls of oil liquid enters damping through through flow hole 21
In chamber 3a, in damping cavity 3a formed oil pressure and downward power is generated to spool 2, and P mouthfuls of oil liquid spool 2 is generated it is upward
Power, it is assumed that P mouthfuls of diameter is D1, and the diameter on 2 top of spool is D2, and the active area that such oil pressure pushes up spool 2 upwards is practical
For the annulus area that D1 and D2 is formed, it can either guarantee biggish conveyance capacity in this way, greatly reduce bullet further through annulus area
The required rigidity of spring 5, to greatly reduce the overall volume of overflow valve.Between the outer diameter on 2 top of inner hole and spool of damping sleeve 3
For interstitial fluid sealing, the lower part of spool 2 is to be slidably matched with P mouthfuls of inner holes, it is ensured that moves not unstability.
When P mouthfuls of pressure, which is applied to the thrust that above-mentioned annulus area generates, to be enough to overcome the active force of spring 5, spool 2
The valve port started to open between P mouthfuls and T mouthfuls is moved up, with moving up for spool 2, the space of damping cavity 3a reduces, resistance
The oil liquid of Buddhist nun's chamber 3a is discharged from damping clearance 4a, so that the unlatching of spool 2 is steadily to open, and will not generate existing market
On direct acting overflow valve before this suddenly open caused overflow valve overflow excessive, the pressure oscillations state then turned down suddenly again.When
Spool 2 has been switched in an equilibrium state, when P mouthfuls of pressure generate fluctuation, if P mouthfuls of pressure fluctuate upwards, and upper
State that opening process is the same, spool 2 continues up movement and can produce because the oil liquid of damping cavity 3a is discharged by damping clearance 4a
Raw stronger damping；If P mouthfuls of pressure fluctuate downwards, spool 2 is moved downward, then will increase the volume of damping cavity 3a, causes to damp
The pressure of chamber 3a declines, and reduces to make to act on active force downward on spool 2, and P mouthfuls of oil liquid, can be through under differential pressure action
Through flow hole 21 flows into damping cavity 3a, this is also required to also have damping action by damping clearance 4a in the process, therefore it is also flat for closing
Slow.
Highly preferred embodiment of the present invention has illustrated, and the various change or remodeling made by those of ordinary skill in the art are not
It can depart from the scope of the present invention.
Claims (10)
1. a kind of high-damping direct-acting overflow valve includes valve body (1), the lower end of the valve body (1) vertically offers P mouthfuls,
T mouthfuls are offered on the lower sides of the valve body (1), valve port are formed between the P mouth and T mouthfuls, it is characterized in that: described
Valve body (1) in be vertically provided with the spool (2) matched with valve port, which is provided centrally with through flow hole (21), institute
The top for the spool (2) stated is arranged with damping sleeve (3), which is provided centrally with damping plunger (4), damps plunger
(4) in insertion through flow hole (21), there are dampings between the outer wall of the damping plunger (4) and the inner wall of the through flow hole (21)
Gap (4a) is formed with damping cavity (3a), the damping cavity between the upper surface and the damping sleeve (3) of the spool (2)
(3a) is connected through through flow hole (21) with P mouthfuls, and the spring matched with the spool (2) is provided with outside the damping sleeve (3)
(5)。
2. a kind of high-damping direct-acting overflow valve according to claim 1, it is characterized in that: the top of the valve body (1)
It is inside provided with regulator bolts (6), upper end and the regulator bolts (6) of the spring (5) offset.
3. a kind of high-damping direct-acting overflow valve according to claim 2, it is characterized in that: the middle part of the spool (2)
It is provided with convex body (22), the lower end of the spring (5) and the upper surface of the convex body (22) offset.
4. a kind of high-damping direct-acting overflow valve according to claim 3, it is characterized in that: being located on the spool (2)
It is provided with tapered portion (23) below the convex body (22), the tapered portion (23) is matched with valve port.
5. a kind of high-damping direct-acting overflow valve according to claim 4, it is characterized in that: under the through flow hole (21)
Portion is provided with undergauge section (21a).
6. a kind of high-damping direct-acting overflow valve according to claim 5, it is characterized in that: under the through flow hole (21)
End, which is expanded, is formed with bellmouth (21b).
7. a kind of high-damping direct-acting overflow valve according to claim 6, it is characterized in that: the regulator bolts (6) with
Bolt seal circle (61) are provided between valve body (1) inner wall.
8. a kind of high-damping direct-acting overflow valve according to claim 7, it is characterized in that: the regulator bolts (6) are whole
In the valve body (1), the central upper portion of the regulator bolts (6) is provided with Hexagon hole (62) for body precession.
9. a kind of high-damping direct-acting overflow valve according to claim 8, it is characterized in that: the upper end of the valve body (1)
Limit stop ring (7) are provided with above the regulator bolts (6).
10. a kind of high-damping direct-acting overflow valve according to claim 9, it is characterized in that: the outer wall of the valve body (1)
On be formed with external screw thread (11), valve seals (12) are provided with above the external screw thread (11) on the valve body (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711391941.2A CN108131345B (en) | 2017-12-21 | 2017-12-21 | A kind of high-damping direct-acting overflow valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711391941.2A CN108131345B (en) | 2017-12-21 | 2017-12-21 | A kind of high-damping direct-acting overflow valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108131345A CN108131345A (en) | 2018-06-08 |
| CN108131345B true CN108131345B (en) | 2019-12-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711391941.2A Active CN108131345B (en) | 2017-12-21 | 2017-12-21 | A kind of high-damping direct-acting overflow valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108131345B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP7142602B2 (en) * | 2019-04-20 | 2022-09-27 | 川崎重工業株式会社 | relief valve |
| CN111795033B (en) * | 2020-07-16 | 2022-06-24 | 中车青岛四方车辆研究所有限公司 | Direct-acting overflow valve |
| CN114439803A (en) * | 2022-02-14 | 2022-05-06 | 天津市天锻压力机有限公司 | Be applied to novel prefill valve of quick forging hydraulic press |
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| CN2086355U (en) * | 1990-05-05 | 1991-10-09 | 德州液压机具厂 | Super high-pressure differential pressure direct overflow valve |
| CN1563764A (en) * | 2004-04-16 | 2005-01-12 | 华中科技大学 | Middle high pressure directly-acting hydraulic overflow valve |
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| CN103615424A (en) * | 2013-12-09 | 2014-03-05 | 怀特(中国)驱动产品有限公司 | Direct-operated-type hydraulic threaded insertion buffer overflow valve |
| DE102013200050A1 (en) * | 2013-01-03 | 2014-07-03 | Robert Bosch Gmbh | Overflow valve for e.g. high pressure pump of storage injection system, has vent holes that are formed in main portion for venting spring chamber, and are configured to connect spring chamber directly to channel in housing |
| CN104019258A (en) * | 2014-06-26 | 2014-09-03 | 华中科技大学无锡研究院 | Double-damping direct-acting type hydraulic pressure overflowing valve |
| CN204267854U (en) * | 2014-11-11 | 2015-04-15 | 莱芜钢铁集团有限公司 | A kind of direct-acting overflow valve |
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| DE10221077B4 (en) * | 2002-05-11 | 2005-03-17 | Horst Kleibrink | Spring-loaded oil overflow valve for membrane compressors |
| CN1436943A (en) * | 2003-03-08 | 2003-08-20 | 华中科技大学 | Directly driven hydraulic overflow valve |
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| CN106438549B (en) * | 2016-12-08 | 2018-02-09 | 燕山大学 | A kind of direct-acting overflow valve |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2086355U (en) * | 1990-05-05 | 1991-10-09 | 德州液压机具厂 | Super high-pressure differential pressure direct overflow valve |
| CN1563764A (en) * | 2004-04-16 | 2005-01-12 | 华中科技大学 | Middle high pressure directly-acting hydraulic overflow valve |
| JP2011027135A (en) * | 2009-07-22 | 2011-02-10 | Kyb Co Ltd | Relief valve |
| CN201502763U (en) * | 2009-09-21 | 2010-06-09 | 宁波汉商液压有限公司 | Directly-actuated overflow valve |
| CN102042432A (en) * | 2010-12-10 | 2011-05-04 | 北京工业大学 | Direct-acting water pressure overflow valve with damping piston |
| CN102678645A (en) * | 2012-05-31 | 2012-09-19 | 常德中联重科液压有限公司 | Direct-acting overflow valve, direct-acting overflow valve group and hydraulic overflow loop |
| CN102943909A (en) * | 2012-10-19 | 2013-02-27 | 华中科技大学 | Differential type water hydraulic relief valve |
| DE102013200050A1 (en) * | 2013-01-03 | 2014-07-03 | Robert Bosch Gmbh | Overflow valve for e.g. high pressure pump of storage injection system, has vent holes that are formed in main portion for venting spring chamber, and are configured to connect spring chamber directly to channel in housing |
| CN103615424A (en) * | 2013-12-09 | 2014-03-05 | 怀特(中国)驱动产品有限公司 | Direct-operated-type hydraulic threaded insertion buffer overflow valve |
| CN104019258A (en) * | 2014-06-26 | 2014-09-03 | 华中科技大学无锡研究院 | Double-damping direct-acting type hydraulic pressure overflowing valve |
| CN204267854U (en) * | 2014-11-11 | 2015-04-15 | 莱芜钢铁集团有限公司 | A kind of direct-acting overflow valve |
Also Published As
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| CN108131345A (en) | 2018-06-08 |
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Effective date of registration: 20191022 Address after: 100072 room 602, door 1, floor 3, No. 44, dujiakan, Changxindian, Fengtai District, Beijing Applicant after: Wu Yi Bing Address before: 315000 Zhejiang province Ningbo city Ningbo high tech Zone Juxian Road No. 555 building 035 room 18-1 No. 013 station Applicant before: Ningbo Wen fan electrical and Mechanical Technology Development Co., Ltd. |
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Effective date of registration: 20191106 Address after: 100055 Guidu International Center A-1301, 27 Nanbinhe Road, Xicheng District, Beijing Applicant after: Jieruite Elastic Damping Body Technology Research Center, Beijing Address before: 100072 room 602, door 1, floor 3, No. 44, dujiakan, Changxindian, Fengtai District, Beijing Applicant before: Wu Yibing |
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