CN2535632Y - Double throttle straight-moving type over-flow valve - Google Patents
Double throttle straight-moving type over-flow valve Download PDFInfo
- Publication number
- CN2535632Y CN2535632Y CN 02205743 CN02205743U CN2535632Y CN 2535632 Y CN2535632 Y CN 2535632Y CN 02205743 CN02205743 CN 02205743 CN 02205743 U CN02205743 U CN 02205743U CN 2535632 Y CN2535632 Y CN 2535632Y
- Authority
- CN
- China
- Prior art keywords
- valve
- valve core
- core assembly
- spring
- limit pin
- 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.)
- Expired - Fee Related
Links
Images
Landscapes
- Safety Valves (AREA)
Abstract
A double flow regulating direct-acting overflow valve comprising a valve body is characterized in that the valve body is provided with a valve core component, a pressure adjusting spring and a positioning pin. The backside of the valve core component is provided with the spring and the positioning pin, the front end of the spring acts on the shoulder of the valve core component, thereby the valve core component tends to a closed position, and further the front end of the positioning pin is positioned at a certain distance of the backside of the valve core component. The valve core component comprises a steel ball and a valve core case, wherein the steel ball is arranged on the valve core case, the guiding excircle of the valve core case is provided with a plurality of longitudinal through slots. The utility model solves the problems that the machining precision request of the prior direct-acting overflow valve is high and when using, the quiescent pressure appears abnormal sounds under the state of super adjusting rate and high overflow. The utility model is simple in structure, low in costs, long in service life, and high in versatility, further the utility model is applicable to be used by miscellaneous hydraulic systems.
Description
Technical field
The utility model relates to a kind of hydraulic parts, particularly a kind of binodal stream direct-acting overflow valve.
Background technique
Relief valve generally is applied in the various hydraulic systems as overload protection.A kind of relief valve of extensive use is common direct-acting overflow valve, its structure as shown in Figure 4, this valve comprises following component: valve body 21, mangetic core assembly 22, adjust pad 23, pressure adjusting spring 24, spring seat 25, in order to guarantee mangetic core assembly 22 motion freely on pilot hole 26, gap between the two must be in 0.02 millimeter, and demanding form and position tolerance, in order to reduce leakage rate, between pilot hole 26 and the oil inlet hole C high concentricity must be arranged, so the requirement on machining accuracy of each part is very high.In order to guarantee the working life of this valve, the hardness of having relatively high expectations in the aperture of oil inlet hole C improves the difficulty of processing of body cavity.Also have because the power of surging can not get compensation, make the open and shut characteristic variation, this direct-acting overflow valve the unusual sound can occur when overflow.Because of the shortcoming of a little this relief valves is requirement on machining accuracy height on making, and static pressure overshoot rate height, influence its pressure control performance, under some operating mode, abnormal voice appears during the relief valve overflow.
Content of the present utility model
The purpose of this utility model provides a kind of binodal stream direct-acting overflow valve, it have simple in structure, easily manufactured, preferably pressure control, open performance.High and occur the problem of abnormal voice when using when static pressure overshoot rate height, overflow with the dissatisfied existing relief valve requirement on machining accuracy of determining.
The purpose of this utility model realizes by following technological scheme.A kind of binodal stream direct-acting overflow valve, comprise valve body, it is characterized in that: mangetic core assembly, pressure adjusting spring and position limit pin are housed on valve body, at the rear of mangetic core assembly spring and position limit pin are housed, the front end of spring acts on the shoulder of mangetic core assembly, make mangetic core assembly be tending towards closed position, the front end of position limit pin is positioned at mangetic core assembly rear one distance.Mangetic core assembly comprises steel ball and valve core case, and steel ball is positioned on the valve core case, has some vertical grooves on the guiding cylindrical of valve core case.Described vertical groove is 4, is equally spaced, and the cross section of described vertical groove is a rectangle.The rear end of described position limit pin is connected to spring seat, and the adjustment pad is housed between position limit pin rear end and spring seat.Cover is equipped with at liquid entering hole place at described valve body.The utility model is quoted the hydraulic bridge principle of binodal stream, limits the open degree of mangetic core assembly by position limit pin, carries out a throttling.Vertical groove by on valve core case carries out second throttle.During the utility model work; When the pressure of pressure port during greater than the precompression elastic force of pressure adjusting spring, mangetic core assembly is opened liquid entering hole, along with flow rises, hydraulic pressure further raises, mangetic core assembly is moved further, because the qualification hydraulic pressure of position limit pin is stable at certain certain value, abnormal voice when forming a throttling and having overcome overflow, flow carries out second throttle by vertical groove more then, compensated the influence of the factors such as power of surging, thereby reduced static pressure overshoot rate widely, improved static characteristic, owing to be the second throttle that carries out with the vertical groove on the mangetic core assembly, make pilot hole requirement on machining accuracy and and inlet opening between concentricity requirement greatly reduce, liquid entering hole place at valve body is set with removable cover, and making the valve body liquid entering hole damage the back only needs to change this cover and needn't change the higher valve body of cost and the valve body difficulty of processing is reduced and the life-span improves.Therefore, its cost is minimized, and its structure is also simpler.
In sum, the utlity model has accuracy of manufacturing and require to reduce, open performance and improve, the problem that occurs abnormal voice when having solved the requirement on machining accuracy that relief valve exists in prior art height and static pressure overshoot degree height, overflow, and it is simple in structure, and cost is low, and the life-span is long.
Brief Description Of Drawings
Fig. 1 is a structural representation of the present utility model,
Fig. 2 is the structure enlarged diagram of mangetic core assembly 3 among Fig. 1,
Fig. 3 be A among Fig. 2 to view,
Fig. 4 is the structural representation of existing direct-acting overflow valve.
Code name 1 valve body 2 covers 3 mangetic core assemblies 31 valve core cases 32 steel balls 33 guiding cylindricals 4 pressure adjusting springs 5 position limit pins 6 are adjusted pad 7 spring seats 8 flow-offs 9 vertical groove 10 pressure port 11 liquid entering holes among the figure
Embodiment
As Fig. 1, the utility model comprises valve body 1, and mangetic core assembly 3, pressure adjusting spring 4 and position limit pin 5 are housed on valve body 1.Spring 4 and position limit pin 5 are housed at the rear of mangetic core assembly 3, and the front end of spring 4 acts on the shoulder of mangetic core assembly 3, makes mangetic core assembly 3 be tending towards closed position, and the front end of position limit pin 5 is positioned at one distance, 6 places, mangetic core assembly 3 rears.Openings of sizes with the limiting valve core assembly.Mangetic core assembly 3 comprises steel ball 32 and valve core case 31, be arranged in the hole of valve core case 31 as Fig. 2,3 steel balls 32, the aperture is drawn in to hold steel ball 32, on the guiding cylindrical 33 of valve core case 31, have 4 vertical grooves 9 that are equally spaced, the cross section of this vertical groove 9 is apart from shape, the rear end of position limit pin 5 is connected to spring seat 7, is equipped with to adjust pad 6 between position limit pin 5 rear ends and spring seat 7, regulates the set pressure of this mangetic core assembly 3 by regulating this adjustment pad 6.At liquid entering hole 11 places of valve body 1, cover 2 is housed, this cover 2 is an interference fit with cooperating of valve body 1, cover 2 is as changing part, to improve price the working life of expensive valve body 1.In the utility model relief valve when work,, when the hydraulic pressure of the pressure port 10 pretensioned spring power greater than pressure adjusting spring 4, mangetic core assembly 3 is opened (displacement is arranged).Along with flow rises, the further rising of hydraulic pressure, mangetic core assembly 3 strengthens with respect to the displacement amount of liquid entering hole 11, but because the effect of position limit pin 5, hydraulic pressure will be stable at certain certain value, form a throttling like this.Position limit pin 5 is placed in the spring 4 when assembling and gets final product, and need not fix.The vertical groove of four rectangles 9 forms second throttle as passage section on valve core case 31, and fluid can partly compensate the influence of factors such as the power of surging, thereby has significantly reduced static pressure overshoot rate, has improved static characteristic.
Claims (5)
1, a kind of binodal stream direct-acting overflow valve, comprise valve body, it is characterized in that: mangetic core assembly, pressure adjusting spring and position limit pin are housed on valve body, at the rear of mangetic core assembly spring and position limit pin are housed, the front end of spring acts on the shoulder of mangetic core assembly, make mangetic core assembly be tending towards closed position, the front end of position limit pin is positioned at mangetic core assembly rear one distance.
2, a kind of binodal stream direct-acting overflow valve according to claim 1, it is characterized in that: mangetic core assembly comprises steel ball and valve core case, steel ball is positioned on the valve core case, has some vertical grooves on the guiding cylindrical of valve core case.
3, a kind of binodal stream direct-acting overflow valve according to claim 2, it is characterized in that: described vertical groove is 4, is equally spaced, the cross section of described vertical groove is a rectangle.
4, a kind of binodal stream direct-acting overflow valve according to claim 1 and 2, it is characterized in that: the rear end of described position limit pin is connected to spring seat, and the adjustment pad is housed between position limit pin rear end and spring seat.
5, a kind of binodal stream direct-acting overflow valve according to claim 4, it is characterized in that: cover is equipped with at the liquid entering hole place at described valve body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02205743 CN2535632Y (en) | 2002-02-26 | 2002-02-26 | Double throttle straight-moving type over-flow valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02205743 CN2535632Y (en) | 2002-02-26 | 2002-02-26 | Double throttle straight-moving type over-flow valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2535632Y true CN2535632Y (en) | 2003-02-12 |
Family
ID=33687314
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02205743 Expired - Fee Related CN2535632Y (en) | 2002-02-26 | 2002-02-26 | Double throttle straight-moving type over-flow valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2535632Y (en) |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100421315C (en) * | 2006-09-11 | 2008-09-24 | 常熟市重量电力机具有限公司 | Hydraulic wire pressure welding clamp with overload protection function |
| CN101893025A (en) * | 2010-07-23 | 2010-11-24 | 林友根 | Link bolt capable of maintaining stable internal hydraulic pressure |
| CN101907119A (en) * | 2010-07-23 | 2010-12-08 | 林友根 | Link bolt with unloading overflow valve |
| CN102678987A (en) * | 2012-05-04 | 2012-09-19 | 华中科技大学 | Seawater hydraulic overflow valve |
| CN102678985A (en) * | 2012-05-04 | 2012-09-19 | 华中科技大学 | Seawater pressure balancing valve |
| CN103912536A (en) * | 2014-04-01 | 2014-07-09 | 嘉善海力达工具有限公司 | Feedback compensation type hydraulic unloading valve |
| CN104033634A (en) * | 2013-03-05 | 2014-09-10 | 罗伯特·博世有限公司 | Overflow valve and low-pressure oil transfer pump comprising same |
| CN105840841A (en) * | 2016-05-09 | 2016-08-10 | 贵州大学 | Multifunctional hydraulic combination valve |
| CN106438549A (en) * | 2016-12-08 | 2017-02-22 | 燕山大学 | Direct-acting overflow valve |
| CN107387476A (en) * | 2017-09-08 | 2017-11-24 | 上海航天控制技术研究所 | A kind of spherical overflow valve of shock type Direct Action Type |
| 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 |
-
2002
- 2002-02-26 CN CN 02205743 patent/CN2535632Y/en not_active Expired - Fee Related
Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100421315C (en) * | 2006-09-11 | 2008-09-24 | 常熟市重量电力机具有限公司 | Hydraulic wire pressure welding clamp with overload protection function |
| CN101893025A (en) * | 2010-07-23 | 2010-11-24 | 林友根 | Link bolt capable of maintaining stable internal hydraulic pressure |
| CN101907119A (en) * | 2010-07-23 | 2010-12-08 | 林友根 | Link bolt with unloading overflow valve |
| CN101893025B (en) * | 2010-07-23 | 2012-03-14 | 林友根 | Link bolt capable of maintaining stable internal hydraulic pressure |
| CN102678987A (en) * | 2012-05-04 | 2012-09-19 | 华中科技大学 | Seawater hydraulic overflow valve |
| CN102678985A (en) * | 2012-05-04 | 2012-09-19 | 华中科技大学 | Seawater pressure balancing valve |
| CN104033634B (en) * | 2013-03-05 | 2018-07-20 | 罗伯特·博世有限公司 | Overflow valve and low pressure oil transfer pump including the overflow valve |
| CN104033634A (en) * | 2013-03-05 | 2014-09-10 | 罗伯特·博世有限公司 | Overflow valve and low-pressure oil transfer pump comprising same |
| CN103912536A (en) * | 2014-04-01 | 2014-07-09 | 嘉善海力达工具有限公司 | Feedback compensation type hydraulic unloading valve |
| CN105840841A (en) * | 2016-05-09 | 2016-08-10 | 贵州大学 | Multifunctional hydraulic combination valve |
| CN106438549A (en) * | 2016-12-08 | 2017-02-22 | 燕山大学 | Direct-acting overflow valve |
| CN106438549B (en) * | 2016-12-08 | 2018-02-09 | 燕山大学 | A kind of direct-acting overflow valve |
| CN107387476A (en) * | 2017-09-08 | 2017-11-24 | 上海航天控制技术研究所 | A kind of spherical overflow valve of shock type Direct Action Type |
| CN107387476B (en) * | 2017-09-08 | 2019-09-06 | 上海航天控制技术研究所 | A kind of shock type Direct Action Type spherical shape overflow valve |
| 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 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN2535632Y (en) | Double throttle straight-moving type over-flow valve | |
| DE102011075518A1 (en) | Arrangement for throttling a fluid flow and corresponding piston pump for conveying fluids | |
| EP1353254A3 (en) | Flow regulating valve and method for regulating fluid flow | |
| CN102162547B (en) | Solenoid valve for controlling a fluid | |
| CN210890328U (en) | Electromagnetic valve | |
| CN217055751U (en) | Hydraulic proportional electromagnetic valve | |
| EP0319618A1 (en) | Solenoid valve | |
| JP3457595B2 (en) | Valve device | |
| CN212718017U (en) | Electromagnetic valve | |
| KR200496618Y1 (en) | Structure of securing load area of counter balance valve and increasing flow rate discharge | |
| WO2012152472A1 (en) | Arrangement for throttling a fluid flow and corresponding piston pump for transporting fluids | |
| WO2024021828A1 (en) | Electronic expansion valve, and refrigeration apparatus | |
| CN219242720U (en) | Magnetic control check valve with novel sealing structure | |
| CN112049828B (en) | Secondary flow distribution device and load sensitive flow distribution mechanism | |
| CN217177604U (en) | Electromagnetic valve | |
| CN217815262U (en) | Multi-channel valve terminal, valve terminal system and shock absorber | |
| CN221196195U (en) | High-pressure overflow valve | |
| CN112431805B (en) | Proportional pressure reducing valve integrating pressure stabilizing function | |
| CN216447214U (en) | High-speed closed-loop hydraulic control system | |
| CN216895828U (en) | Balanced cage valve of two direction V type valve cores | |
| CN218377929U (en) | Damping control solenoid valve that possesses failure protection | |
| CN111720559B (en) | Control valve and air conditioning system | |
| CN220185485U (en) | Load-sensitive control valve and valve group | |
| CN218895042U (en) | Electromagnetic valve | |
| CN220870154U (en) | Axial flow type check valve |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |