CN202851489U - Hydraulic proportional overflow valve - Google Patents
Hydraulic proportional overflow valve Download PDFInfo
- Publication number
- CN202851489U CN202851489U CN 201220419920 CN201220419920U CN202851489U CN 202851489 U CN202851489 U CN 202851489U CN 201220419920 CN201220419920 CN 201220419920 CN 201220419920 U CN201220419920 U CN 201220419920U CN 202851489 U CN202851489 U CN 202851489U
- Authority
- CN
- China
- Prior art keywords
- valve
- pressure
- hydraulic proportional
- utility
- model
- 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
The utility model discloses a hydraulic proportional overflow valve. The hydraulic proportional overflow valve comprises a valve body, a main valve element, a top core and a proportional electromagnet, wherein the top core, the main valve element and the proportional electromagnet are arranged in the valve body in sequence, a pressure sensor is arranged at the front end of the valve body, an output end of the pressure sensor is connected with an electronic controller, and a control end of the electronic controller is connected with a control end of the proportional electromagnet. Compared with the prior art, the opening degree of the slide valve type valve element is controlled through the principle of force equilibrium, continuous control on the work pressure is achieved, the maximum control pressure reaches 70 Mpa, and therefore the purpose of the hydraulic proportional overflow valve is achieved.
Description
Technical field
The utility model relates to a kind of relief valve, particularly a kind of hydraulic proportional relief valve that is applicable to electric-hydraulic proportion control.
Background technique
At present, at home and abroad, what the hydraulic proportional relief valve was commonly used is the proportional pressure control valve that working pressure is lower than 31.5MPa, and the proportional pressure control valve that working pressure is higher than 31.5MPa only has several families to produce, and working pressure is higher than the proportional pressure control valve of 31.5MPa and does not also produce at home.
The working principle of existing proportional pressure control valve generally all is to control the opening degree control working pressure of tapered spool by proportion electro-magnet, perhaps utilize the valve of same principle to form pilot-operated proportional relief valve as pilot valve, can be restricted as direct-acting type valve flow, can only be limited in the 31.5MPa as the pilot valve working pressure, concrete structure is referring to existing two kinds of proportional pressure control valve structural types illustrated in figures 1 and 2, Fig. 1 is direct-acting type proportional overflow valve, Fig. 2 is pilot-operated proportional relief valve, and as can be seen from the figure the pilot valve of pilot-operated proportional relief valve is exactly direct-acting type proportional overflow valve.
Along with the skill upgrading of domestic industry equipment, to the also progressively raising of performance requirement of base components, especially extremely important for the research and development of the high performance base components that also is in the product blank.
Therefore, be exactly under such background, need especially a kind of high performance hydraulic proportional relief valve that can be used for ultrahigh pressure with pressure feedback that has, to solve the above-mentioned existing problem that exists.
The model utility content
The purpose of this utility model is to provide a kind of hydraulic proportional relief valve, for the deficiencies in the prior art, realizes the continuity control to working pressure, and the highest pilot pressure can reach 70MPa.
The technical problem that the utility model solves can realize by the following technical solutions:
A kind of hydraulic proportional relief valve, it is characterized in that, it comprises a valve body, a main valve plug, a plunger tip and a proportion electro-magnet, described plunger tip, main valve plug and proportion electro-magnet are successively set in the described valve body, the front end of described valve body is provided with pressure transducer, the output terminal of described pressure transducer connects an electronic controller, and the control end of described electronic controller is connected with the control end of described proportion electro-magnet.
In an embodiment of the present utility model, be provided with a secondary spring at the front end of described plunger tip.
In an embodiment of the present utility model, the rear end cover of described pressure transducer and described valve body are connected to each other.
Hydraulic proportional relief valve of the present utility model compared with prior art, by the opening degree of equilibrium of forces principle control slide valve type spool, is realized the continuity control to working pressure, and the highest pilot pressure can reach 70MPa, realizes the purpose of this utility model.
Characteristics of the present utility model can be consulted the detailed description of the graphic and following better mode of execution of this case and be obtained to be well understood to.
Description of drawings
Fig. 1 is the structural representation of existing direct-acting type proportional overflow valve;
Fig. 2 is the structural representation of existing pilot-operated proportional relief valve;
Fig. 3 is the structural representation of hydraulic proportional relief valve of the present utility model;
Fig. 4 is the working principle schematic representation of hydraulic proportional relief valve of the present utility model.
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.
As shown in Figure 3, hydraulic proportional relief valve of the present utility model, it comprises a valve body 100, a main valve plug 200, a plunger tip 300 and a proportion electro-magnet 400, described plunger tip 300, main valve plug 200 and proportion electro-magnet 400 are successively set in the described valve body 100, the front end of described valve body 100 is provided with pressure transducer 500, the output terminal of described pressure transducer 500 connects an electronic controller 600, and the control end of described electronic controller 600 is connected with the control end of described proportion electro-magnet 400.(referring to Fig. 4)
In the utility model, be provided with a secondary spring 310 at the front end of described plunger tip 300.
In the utility model, rear end cover 510 and the described valve body 100 of described pressure transducer 500 are connected to each other.
As shown in Figure 4, the thrust of proportion electro-magnet 400 is F, and the Returnning spring power of secondary spring 310 is Fn, and the chamber sectional area of plunger tip 300 is A, and pressure communicates by throttle orifice and the primary pressure chamber of plunger tip 300, so the thrust f=PA of plunger tip 300.Ignore the impact of hydraulic power and frictional force, the stressed equation of main valve plug 200 is F=Fn+PA, wherein the power the during compression,metal-to-metal position of Returnning spring only has 4.5N, can draw thus the ouput force of proportion electro-magnet 400 when a definite value, the sectional area of the working pressure of proportional pressure control valve and plunger tip 300 is inversely proportional to, as long as the processing of the diameter of plunger tip 300 is smaller, the pressure of proportional pressure control valve valve just can obtain a larger value, little with the diameter Relationship of main valve plug 200, so just can realize simultaneously cone valve type proportional pressure control valve the high-pressure high-flow that can not satisfy simultaneously.(P is that the high-pressure mouth of valve is pressure control mouth among Fig. 4, and T is that the valve low pressure port is return opening)
Simultaneously, hydraulic proportional relief valve of the present utility model has increased pressure transducer 500 and has carried out the continuous pressure detection, ouput force by electronic controller 600 continuous setup proportion electro-magnets 400, until the pilot pressure of hydraulic proportional relief valve reaches the needed pressure of command signal accurately, form an electric closed loop, add the power closed loop principle of hydraulic proportional relief valve itself, hydraulic proportional relief valve of the present utility model is by two closed loops working pressure to be controlled, so the control accuracy of hydraulic proportional relief valve of the present utility model is greatly improved, higher more than 10 times than the control accuracy of general proportional pressure control valve.
More than show and described basic principle of the present utility model and 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 above-described embodiment and the specification just illustrates principle of the present utility model; under the prerequisite that does not break away from the utility model spirit and scope; the utility model also has various changes and modifications; these changes and improvements all fall in claimed the utility model scope, and the claimed scope of the utility model is defined by appending claims and equivalent thereof.
Claims (3)
1. hydraulic proportional relief valve, it is characterized in that, it comprises a valve body, a main valve plug, a plunger tip and a proportion electro-magnet, described plunger tip, main valve plug and proportion electro-magnet are successively set in the described valve body, the front end of described valve body is provided with pressure transducer, the output terminal of described pressure transducer connects an electronic controller, and the control end of described electronic controller is connected with the control end of described proportion electro-magnet.
2. hydraulic proportional relief valve as claimed in claim 1 is characterized in that, is provided with a secondary spring at the front end of described plunger tip.
3. hydraulic proportional relief valve as claimed in claim 1 is characterized in that, the rear end cover of described pressure transducer and described valve body are connected to each other.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220419920 CN202851489U (en) | 2012-08-22 | 2012-08-22 | Hydraulic proportional overflow valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220419920 CN202851489U (en) | 2012-08-22 | 2012-08-22 | Hydraulic proportional overflow valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202851489U true CN202851489U (en) | 2013-04-03 |
Family
ID=47982696
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220419920 Expired - Fee Related CN202851489U (en) | 2012-08-22 | 2012-08-22 | Hydraulic proportional overflow valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202851489U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103244498A (en) * | 2013-05-17 | 2013-08-14 | 浙江科技学院 | Precision pressure regulating type direct-acting overflow valve |
| CN104214156A (en) * | 2014-08-20 | 2014-12-17 | 海门市油威力液压工业有限责任公司 | High-flow ultrahigh-pressure directly operated type proportional overflow valve |
| CN104235103A (en) * | 2014-09-15 | 2014-12-24 | 宝鸡航天动力泵业有限公司 | Electromagnetic unloading valve |
-
2012
- 2012-08-22 CN CN 201220419920 patent/CN202851489U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103244498A (en) * | 2013-05-17 | 2013-08-14 | 浙江科技学院 | Precision pressure regulating type direct-acting overflow valve |
| CN104214156A (en) * | 2014-08-20 | 2014-12-17 | 海门市油威力液压工业有限责任公司 | High-flow ultrahigh-pressure directly operated type proportional overflow valve |
| CN104235103A (en) * | 2014-09-15 | 2014-12-24 | 宝鸡航天动力泵业有限公司 | Electromagnetic unloading valve |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN202851489U (en) | Hydraulic proportional overflow valve | |
| CN201723803U (en) | Direct-type proportion overflow valve | |
| CN202971383U (en) | Proportional overflow valve with position feedback | |
| CN106050804A (en) | Test system for hydraulic shock waveform control | |
| CN102927074B (en) | Anti-cavitation high frequency sound big flow proportional inserted valve | |
| CN202673810U (en) | Direct-acting type three-way proportional throttling valve | |
| CN103775435A (en) | Testing system of pilot-operated type load control valve | |
| CN103603832A (en) | Hydraulic substation oil circuit system | |
| CN204082089U (en) | The adjustable throttling arrangement of whale | |
| CN204025238U (en) | A kind of high-voltage electrical apparatus ratio pressure regulating system | |
| CN202894261U (en) | Injection pressurizing structure of die casting machine | |
| CN103331937A (en) | Numerical control hydraulic machine decompression system based on pressure feedback | |
| CN104265709B (en) | A kind of overlapping sequence valve | |
| CN202012095U (en) | Movable arm hydraulic energy saving control device for loading machine | |
| CN102966615A (en) | Servo hydraulic control system with automatically adjustable punching stroke and speed of punch press | |
| CN201420718Y (en) | Pilot operated check valve | |
| CN202926741U (en) | High-flow hydraulic feedback plug-in mounting electric proportional throttle valve | |
| CN204961943U (en) | Piston water hammer relief valve | |
| CN202900842U (en) | Hydraulic universal testing machine one-way hydraulic cylinder quick-dropping hydraulic circuit | |
| CN206889372U (en) | A kind of hydraulic control system of accumulator | |
| CN205519187U (en) | Punching device of hydro -cylinder pipe fitting | |
| CN103089730A (en) | Balance valve for pump truck and response differential pressure control method of secondary overflow valve of balance valve for pump truck | |
| CN204458624U (en) | A kind of overlapping sequence valve | |
| CN204114243U (en) | A kind of overlapping sequence valve | |
| CN203784392U (en) | Safety valve |
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: SHANGHAI COSURE HYDRAULIC CO., LTD. Free format text: FORMER NAME: SHANGHAI COSURE ELECTRO HYDRAULIC CONTROL EQUIPMENT CO., LTD. |
|
| CP03 | Change of name, title or address |
Address after: 201802 Shanghai city Jiading District Nanxiang Town kiln village Patentee after: SHANGHAI KEXIN HYDRAULIC PRESSURE CO., LTD. Address before: 201802 Shanghai City, Jiading District Jiading District Nanxiang Town kiln village Patentee before: Shanghai Cosure International Trading Co., Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130403 Termination date: 20170822 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |