CN203879834U - Hydraulic valve with vibration and noise reduction function - Google Patents
Hydraulic valve with vibration and noise reduction function Download PDFInfo
- Publication number
- CN203879834U CN203879834U CN201420253252.0U CN201420253252U CN203879834U CN 203879834 U CN203879834 U CN 203879834U CN 201420253252 U CN201420253252 U CN 201420253252U CN 203879834 U CN203879834 U CN 203879834U
- Authority
- CN
- China
- Prior art keywords
- valve
- guide
- pilot valve
- spool
- vibration
- 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.)
- Active
Links
Abstract
The utility model discloses a hydraulic valve with a vibration and noise reduction function, belongs to the technical field of hydraulic control and solves the problem that a current overflow valve generates vibration and noise during operation. The hydraulic valve comprises a main valve and a pilot valve. The pilot valve comprises a pilot valve body provided with a pilot valve cavity inside. A pilot valve seat, a pilot valve element and a pressure regulating spring are disposed in the pilot valve cavity. A limit ring is disposed on the pilot valve element. The pilot valve element can drive the limit ring to move in the pilot valve cavity. The hydraulic valve is mainly used as the main overflow valve or overload overflow valve of large engineering machinery hydraulic systems such as machine tools and ships.
Description
[technical field]
The utility model relates to a kind of hydrovalve, relates in particular to a kind of hydrovalve of vibration and noise reducing.
[background technique]
Relief valve is requisite pressure control valve in hydraulic system, and in the time that system pressure exceedes the pressure of relief valve spring setting, relief valve spool is opened also flow unnecessary in system is discharged, to maintain constant system pressure.There is the problems such as vibration, noise in existing pilot operated compound relief valve, in the time that system works pressure is greater than 25MPa, vibration, noise is more outstanding, and system is produced to larger pressure surge at work.
For above-mentioned technical problem, in prior art, conventionally adopt following measure: 1, weakening pad of the formerly front increase of guide valve seat reduces the vibration of valve, but actual effectiveness in vibration suppression is not obvious, and installs inconvenient; 2, spool concentric by secondary or three grades of concentric structures prevents the runout of relief valve, such spool processing difficulties, and processing cost increases; 3, ensure that by increasing the rigidity of spring and the perpendicularity of spring spool does not swing, but increase rigidity can cause the reduction of spring life, and spring seat is required to also corresponding raising.
[model utility content]
Problem to be solved in the utility model is just to provide a kind of hydrovalve of vibration and noise reducing, effectively reduces valve vibration, reduces operating noise, relief valve stable and reliable operation.
For solving the problems of the technologies described above, the utility model adopts following technological scheme:
A kind of hydrovalve of vibration and noise reducing, comprise main valve and pilot valve, described pilot valve comprises guide valve blocks, in described guide valve blocks, be provided with guide's valve pocket, in described guide's valve pocket, be provided with guide's valve seat, guide's spool and pressure adjusting spring, described guide's spool is provided with limited ring, and described guide's spool can drive limited ring to move in described guide's valve pocket.
Further, described limited ring is provided with flow channels.
Further, described flow channels is the breach that is distributed in described limited ring edge.
Further, in described guide's valve pocket, be provided with limited step, the formerly movement travel in pilot valve chamber of guide's spool described in described limited step and limited ring engagement limits.
Further, described guide's spool comprises taper valve head and spring attachment post, and described limited ring is enclosed within on spring attachment post, and described pressure adjusting spring pushes against limited ring.
The beneficial effects of the utility model:
Relief valve of the present utility model, formerly guide valve core is provided with limited ring, and guide's spool can drive limited ring to move in pilot valve chamber, the gap of limited ring and pilot valve cavity wall is very little, formerly in guide valve core movement process, limited ring rises guide's spool is played to certralizing ability in pilot valve chamber, improves the formerly coaxality in pilot valve chamber of guide's spool and guide's valve seat.After guide valve core is opened in the ban, fluid flows into guide's valve pocket, because guide's spool and guide's valve seat have compared with high-axiality, between guide's spool and pilot valve cavity wall, gap is even, hydrodynamic pressure is uniformly distributed, so the hydrodynamic pressure formerly radial effect power on guide valve core is equally distributed, can reduce the runout of guide's spool in radial direction, the vibration of guide's spool reduces effectively suppression fluid noise.
These features of the present utility model and advantage will be below embodiment, accompanying drawing in detailed exposure.
[brief description of the drawings]
Below in conjunction with accompanying drawing, the utility model is described further:
Fig. 1 is the structural representation of relief valve in the utility model preferred embodiment;
Fig. 2 is the structural representation of limited ring in the utility model preferred embodiment.
[embodiment]
Accompanying drawing below in conjunction with the utility model embodiment is explained and illustrated the utility model embodiment's technological scheme, but following embodiment is only preferred embodiment of the present utility model, not all.Based on the embodiment in mode of execution, those skilled in the art are other embodiments that obtains under the prerequisite of not making creative work, all belong to protection domain of the present utility model.
With reference to Fig. 1, the hydrovalve of the present embodiment vibration and noise reducing, comprises main valve and pilot valve, and pilot valve comprises guide valve blocks 1, is provided with guide's valve pocket in guide valve blocks 1, is provided with guide's valve seat 6, guide's spool and pressure adjusting spring 3 in guide's valve pocket.In main valve, be also provided with main valve chamber and be located at the main valve plug 4 in main valve chamber, main valve plug 4 is provided with the fluid passage 41 of perforation.In the time that relief valve is worked, fluid is introduced into main valve chamber, then enters guide's valve seat 6 through the fluid passage 41 of main valve plug 4, and then acts on guide's spool.In the time that system pressure is greater than pressure adjusting spring 3 preset pressure, hydrodynamic pressure is pushed guide's spool open and is entered guide's valve pocket, utilizes pilot valve that unnecessary flow is released.
Guide's spool of relief valve and pressure adjusting spring form quality mass-spring system, will do longitudinally or the harmonic motion of shaking of radial direction in the time having External force interference.In the time that hydraulic system is normally worked, relief valve is dynamic in frequent keying, that is to say: under the effect that guide's spool is made a concerted effort at pressure adjusting spring and hydrodynamic pressure, always a bit do the up-down vibration of axial direction and swinging of radial direction around certain, this kinematic potential must cause the pressure surge in guide's valve pocket, this fluctuation obtains several times of even amplifications of tens times in the time of the opening through main valve plug, thereby system is caused to very large pressure surge and impact, will cause hydraulic pressure to scream and reach certain degree in frequency, produce operating noise.
For this reason, the present embodiment formerly arranges limited ring 5 on guide valve core, guide's spool can drive limited ring 5 to move in pilot valve chamber, limited ring 5 is very little with the gap of pilot valve cavity wall, formerly in guide valve core movement process, limited ring 5 rises guide's spool is played to certralizing ability in pilot valve chamber, substantially can keep the axle center of guide's spool and the axle center of guide's valve seat 6 on same straight line.When guide valve core is opened in the ban, hydrodynamic pressure between guide's spool and pilot valve cavity wall is uniformly distributed, that is: hydrodynamic pressure formerly the radial effect power on guide valve core be equally distributed, can reduce the runout of guide's spool in radial direction, the vibration of guide's spool reduces effectively suppression fluid noise.
In addition, in the time of limited ring 5 and the contact friction of pilot valve cavity wall, damping force can be produced, the stable adjustment time of relief valve can be reduced.
When practical application, guide's spool comprises taper valve head 21 and spring attachment post 22, and above-mentioned limited ring 5 is enclosed within on spring attachment post 22, and pressure adjusting spring 3 lower ends push against limited ring 5, and pilot valve cavity wall is pressed close in the side of limited ring 5.It may occur to persons skilled in the art that, be also the certralizing ability that can realize guide's spool if limited ring and guide's spool are designed to integrative-structure.
In order further to improve the reliability of relief valve, the present embodiment has also proposed following measure:
1, on limited ring 5, flow channels is set, preferably: with reference to Fig. 2, flow channels is the breach 51 that is distributed in limited ring 5 edges, enters guide's valve pocket fluid and can realize smooth pressure release by several breach 51 of limited ring 5 peripheries, pressure prevents from spraining.
2, limited step 11 is set in pilot valve chamber, limited step 11 and limited ring 5 engagement limits guide spools are the movement travel in pilot valve chamber formerly.When hydrodynamic pressure is too high or when system pressure impact, the stroke of guide's spool will increase suddenly, the effective travel of design will likely be exceeded, pressure adjusting spring 3 exceedes effective travel, its stability will reduce, cause rapid decompression and fall to press phenomenon, by the formerly movement travel in pilot valve chamber of limited step 11 and limited ring 5 engagement limits guide spools, can effectively prevent that guide's spool is excessive because of guide's spool stroke that pressure is large or flow causes greatly, cause swing, the decompression of poppet valve core and fall to press phenomenon.
The utility model embodiment's structure of relief valve is simple, stable and reliable operation, can reduce system pressure fluctuation and impact, and the design of limited ring can reduce the perpendicularity requirement to pressure adjusting spring, thereby has reduced relief valve technological requirement, is convenient to produce.
The utility model embodiment is mainly used in the main relief valve of construction machinery hydraulic system or overload relief valve, in the Large Hydraulic System such as lathe, boats and ships.
The above; it is only embodiment of the present utility model; but protection domain of the present utility model is not limited to this, is familiar with this those skilled in the art and should be understood that the utility model includes but not limited to accompanying drawing and the content of describing in embodiment above.Any amendment that does not depart from function and structure principle of the present utility model all will be included in the scope of claims.
Claims (5)
1. the hydrovalve of a vibration and noise reducing, comprise main valve and pilot valve, described pilot valve comprises guide valve blocks, in described guide valve blocks, be provided with guide's valve pocket, in described guide's valve pocket, be provided with guide's valve seat, guide's spool and pressure adjusting spring, it is characterized in that: described guide's spool is provided with limited ring, described guide's spool can drive limited ring to move in described guide's valve pocket.
2. the hydrovalve of a kind of vibration and noise reducing as claimed in claim 1, is characterized in that: described limited ring is provided with flow channels.
3. the hydrovalve of a kind of vibration and noise reducing as claimed in claim 2, is characterized in that: described flow channels is the breach that is distributed in described limited ring edge.
4. the hydrovalve of a kind of vibration and noise reducing as described in claim 1 or 2 or 3, is characterized in that: in described guide's valve pocket, be provided with limited step, the formerly movement travel in pilot valve chamber of guide's spool described in described limited step and limited ring engagement limits.
5. the hydrovalve of a kind of vibration and noise reducing as described in claim 1 or 2 or 3, is characterized in that: described guide's spool comprises taper valve head and spring attachment post, described limited ring is enclosed within on spring attachment post, and described pressure adjusting spring pushes against limited ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420253252.0U CN203879834U (en) | 2014-05-16 | 2014-05-16 | Hydraulic valve with vibration and noise reduction function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420253252.0U CN203879834U (en) | 2014-05-16 | 2014-05-16 | Hydraulic valve with vibration and noise reduction function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203879834U true CN203879834U (en) | 2014-10-15 |
Family
ID=51680335
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420253252.0U Active CN203879834U (en) | 2014-05-16 | 2014-05-16 | Hydraulic valve with vibration and noise reduction function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203879834U (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104613036A (en) * | 2015-01-20 | 2015-05-13 | 洛阳理工学院 | Noise reduction overflow valve with hydrodynamic force balancing and adjustable damping functions |
| CN104864137A (en) * | 2015-05-20 | 2015-08-26 | 安徽理工大学 | Pilot-operated type water pressure overflow 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 |
| CN106523578A (en) * | 2016-12-16 | 2017-03-22 | 贵州红林机械有限公司 | Pilot type flow proportional solenoid valve for CDC shock absorber system |
| CN106545537A (en) * | 2015-09-22 | 2017-03-29 | 无锡市德美嘉机械科技有限公司 | A kind of stroking mechanism of hydraulic servo variable pump |
| CN108278234A (en) * | 2018-01-17 | 2018-07-13 | 邵立坤 | Plug-in rotary buffering valve |
| CN111094761A (en) * | 2018-01-31 | 2020-05-01 | Ｋｙｂ株式会社 | Valve device |
-
2014
- 2014-05-16 CN CN201420253252.0U patent/CN203879834U/en active Active
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104613036A (en) * | 2015-01-20 | 2015-05-13 | 洛阳理工学院 | Noise reduction overflow valve with hydrodynamic force balancing and adjustable damping functions |
| CN104864137A (en) * | 2015-05-20 | 2015-08-26 | 安徽理工大学 | Pilot-operated type water pressure overflow valve |
| CN104864137B (en) * | 2015-05-20 | 2017-11-14 | 安徽理工大学 | Leading type water pressure overflow valve |
| CN106545537A (en) * | 2015-09-22 | 2017-03-29 | 无锡市德美嘉机械科技有限公司 | A kind of stroking mechanism of hydraulic servo variable pump |
| CN106545537B (en) * | 2015-09-22 | 2018-08-10 | 江苏汉力士液压制造有限公司 | A kind of stroking mechanism of hydraulic servo variable pump |
| 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 |
| CN106523578A (en) * | 2016-12-16 | 2017-03-22 | 贵州红林机械有限公司 | Pilot type flow proportional solenoid valve for CDC shock absorber system |
| CN108278234A (en) * | 2018-01-17 | 2018-07-13 | 邵立坤 | Plug-in rotary buffering valve |
| CN111094761A (en) * | 2018-01-31 | 2020-05-01 | Ｋｙｂ株式会社 | Valve device |
| CN111094761B (en) * | 2018-01-31 | 2022-03-15 | Ｋｙｂ株式会社 | Valve device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN203879834U (en) | Hydraulic valve with vibration and noise reduction function | |
| CN103851241A (en) | Direct-acting overflow valve | |
| CN204476899U (en) | A kind of crane rotation system control valve | |
| CN209743277U (en) | Stacked overflow valve | |
| CN106151143B (en) | Luffing jib maintaining valve | |
| CN204127040U (en) | High-pressure high-flow overload valve | |
| CN205371160U (en) | Pressure boost overflow valve | |
| CN102235394A (en) | Integrated valve with oil circuit selection function for controlling hydraulic motor brake | |
| CN102261354A (en) | Crane hydraulic system and hydraulic balance valve thereof | |
| CN203348215U (en) | Buffer device for small excavator oil cylinder | |
| CN204610409U (en) | A kind of control valve | |
| CN105422537B (en) | Pressure-increasing overflow valve | |
| CN108302077A (en) | A kind of overload oil compensating valve | |
| CN203560482U (en) | Plug-in overflow valve with pressure releasing and buffering function | |
| CN108798578A (en) | One kind can pitching fluid power cutter | |
| CN103573733B (en) | A kind of buffering pressure maintaining valve for oil hydraulic motor | |
| CN203348640U (en) | Valve element of micro flow control valve | |
| CN206816579U (en) | A kind of multistage overflow valve | |
| CN203453183U (en) | Hydraulic cylinder guide sleeve oil way buffer groove structure | |
| CN206316483U (en) | A kind of Fixture for Gear-shaving for being used to produce durable type synchronizer gear sleeve | |
| CN203404147U (en) | Walking buffer valve | |
| CN203614846U (en) | Throttle speed-governing valve | |
| CN205533550U (en) | Explosion -proof valve of current -limiting | |
| CN203146485U (en) | Buffer device of hydraulic system | |
| CN202991704U (en) | Anti-collision hydraulic cylinder for high-speed machine tool |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: ZHEJIANG HUAYI PRECISION MACHINERY CO., LTD. Free format text: FORMER NAME: ZHEJIANG HUAYI MACHINERY CO., LTD. |
|
| CP01 | Change in the name or title of a patent holder |
Address after: 311835, Shaoxing Town, Zhuji, Zhejiang, Jiefang Road No. 689 Patentee after: ZHEJIANG HUAYI PRECISION MACHINERY Co.,Ltd. Address before: 311835, Shaoxing Town, Zhuji, Zhejiang, Jiefang Road No. 689 Patentee before: ZHEJIANG HUAYI MACHINERY Co.,Ltd. |
|
| CP01 | Change in the name or title of a patent holder |
Address after: 311835 no.689 Jiefang Road, Diankou Town, Zhuji City, Shaoxing City, Zhejiang Province Patentee after: Zhejiang Huayi Precision Machinery Co.,Ltd. Address before: 311835 no.689 Jiefang Road, Diankou Town, Zhuji City, Shaoxing City, Zhejiang Province Patentee before: ZHEJIANG HUAYI PRECISION MACHINERY Co.,Ltd. |
|
| CP01 | Change in the name or title of a patent holder | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20230824 Address after: 311800 Diankou Town Industrial Zone, Zhuji City, Shaoxing City, Zhejiang Province Patentee after: Zhejiang Sanshang Zhidi Technology Co.,Ltd. Address before: 311835 no.689 Jiefang Road, Diankou Town, Zhuji City, Shaoxing City, Zhejiang Province Patentee before: Zhejiang Huayi Precision Machinery Co.,Ltd. |
|
| TR01 | Transfer of patent right |