CN200999897Y - Drift diameter over-flow valve - Google Patents
Drift diameter over-flow valve Download PDFInfo
- Publication number
- CN200999897Y CN200999897Y CN 200620049234 CN200620049234U CN200999897Y CN 200999897 Y CN200999897 Y CN 200999897Y CN 200620049234 CN200620049234 CN 200620049234 CN 200620049234 U CN200620049234 U CN 200620049234U CN 200999897 Y CN200999897 Y CN 200999897Y
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- valve
- main valve
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- core
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Abstract
The purpose of the utility model is to provide a pilot type overflow valve according with the international standards and the advanced standards of foreign countries. In order to realize the utility model, the technical proposal comprises a pilot type overflow valve, which comprises a main valve and a pilot valve fixed on the main valve, the main valve comprises a main valve core and a main valve bushing, the pilot valve comprises a pressure adjusting spring, a core guiding core, and the utility model is characterized in that the pilot valve core is a spheroid structure. The conical surface valve line sealing of the oil sealing form between the main valve core and the main valve bushing of the pilot type overflow valve is changed into an angle square surface sealing. The original cross sectional area of the of the main valve 380 mm<2> is increased to 452 mm<2>. The pressure adjusting scope of the pressure adjusting spring of the overflow valve is five shelves. The utility model has the advantages that the low pressure characteristic is improved, to enable the pressure adjustment to be steady, the circulating capability to be large, and the closing characteristic to be enhanced; the pilot valve core is changed into a spheroid structure, the manufacture difficulty is reduced, and the components processing quality is enhanced; and the oil sealing form is improved.
Description
Technical field
The utility model relates to a kind of relief valve, particularly a kind of latus rectum relief valve (type pilot) of equalizing piston formula.
Background technique
At present, existing equalizing piston formula relief valve (type pilot) is to be made of guide's part and primary valve part two-part mostly.Circuit pressure is added in top guide's part earlier, is added in main valve plug top by aperture (damping hole) then.When the pressure in the loop surpassed setting pressure, pressure oil backed down the cone valve of pilot valve by aperture, and flows back to fuel tank.At this moment, in the generation pressure difference up and down of main valve plug main valve plug is pushed open, valve is opened, the oil in loop flows back to fuel tank.When circuit pressure reduced, main valve plug kept balance, and under the effect of balance spring power, main valve plug descends and closes, and keeps the setting pressure of system.So, the diameter of main valve plug, quite important to the unlatching of main valve, the sensitivity of closing.Usually, the guide has only in the loop fixer resistance, forms variable liquid resistance between poppet valve core and valve seat.When spillway discharge increased, the aperture of poppet port and primary valve all will increase, and spring force and steady-state fluid force increase, and pressure adjusting spring often is in stress, and spring rigidity originally is relatively poor, and stepping is few.Pressure regulation difficulty and unstable causes valve body longer simultaneously, and weight increases.Simultaneously, because original guide valve core is a cone valve structure, adjusting moment is big, the manufacture difficulty height.
The model utility content
Technical problem to be solved in the utility model is to provide a kind of latus rectum relief valve that meets the leading type of international standard and foreign advanced standard, and this latus rectum relief valve pressure rating is brought up to 35Mpa.
Technical problem to be solved in the utility model can be achieved through the following technical solutions:
A kind of latus rectum relief valve comprises main valve and the pilot valve that is fixed on the main valve, and described main valve comprises main valve plug and main valve housing, and described pilot valve comprises pressure adjusting spring, guide valve core, it is characterized in that, described guide valve core is a sphere structure.
Oil sealing form between the main valve plug of pilot operated compound relief valve and the main valve housing changes the angle square face seal into by the sealing of conical surface valve line.
Main valve sectional area originally, existing by 380mm
2, increase and be 452mm
2
The range of regulation of the pressure adjusting spring of relief valve is five grades of 5MPa, 10MPa, 20MPa, 31.5MPa, 35MPa.
Advantage of the present utility model is: improved the low pressure characteristic of valve, made pressure regulation steady, negotiability is big, has improved open and shut characteristic; Improve pressure regulation stability and shortened the pilot valve body length; Change guide valve core into ball-valve structure, its oil sealing diameter of section is reduced, alleviated adjusting moment, reduced manufacture difficulty, improved the part processing quality; Improve the oil sealing form, improved the oil sealing characteristic.Of the present utility model with directly the relief valve life-span reaches 500,000 times.
Figure of description
Further specify the utility model below in conjunction with the drawings and specific embodiments.
Fig. 1 is the structural representation of the utility model latus rectum relief valve.
Embodiment
For the utility model is further described, illustrated below in conjunction with specific embodiment.
As shown in Figure 1, a kind of latus rectum relief valve comprises main valve and the pilot valve 2 that is fixed on the main valve, and described main valve comprises main valve plug 3 and main valve housing 16, and pilot valve 2 comprises pressure adjusting spring 9, guide valve core 8, and wherein, described guide valve core 8 is a sphere structure.Because original guide valve core is a cone valve structure, adjusting moment is big, adopts the ball valve of sphere structure in the utility model, and its oil sealing diameter of section reduces, and has alleviated adjusting moment, has reduced manufacture difficulty, has improved the part processing quality.And the original cone valve that uses, manufacturing process complexity, the circularity on its conical surface will be controlled in several microns, and roughness is controlled at Ra0.4, and hardness will all be quite difficult about HRC66; And use cone valve to occur noise easily in the zone of high pressure at work, and utilize ball valve to replace, above problem all is resolved.
The main valve plug 3 of pilot operated compound relief valve and the oil sealing form of main valve housing 16 change the angle square face seal into by the sealing of conical surface valve line, have improved the oil sealing characteristic.
Main valve sectional area originally is by 380mm
2, increase and be 452mm
2, because the diameter of main valve plug, quite important to the unlatching of main valve, the sensitivity of closing.Therefore, the main valve plug that adopts in the utility model has increased diameter on original basis, has improved the low pressure characteristic of valve, makes pressure regulation steady, and through-current capability is big, has improved open and shut characteristic.
The range of regulation of the pressure adjusting spring 9 of relief valve is five grades of 5MPa, 10MPa, 20MPa, 31.5MPa, 35MPa.Presure-adjusting Spring of Overflow Valve originally is divided into two grades of 10MPa, 31.5MPa, and stepping is few, and for satisfying the range of regulation requirement, spring designs to such an extent that slightly grow, and makes that the spring rigidity is relatively poor, and pressure regulation difficulty and unstable causes valve body longer simultaneously, and weight increases.After adopting the technical solution of the utility model, stepping is many, has reduced the free length of Regulation spring 9, is reduced to present 23mm by original 35mm; Improved pressure regulation stability and shortened the length of pilot valve 2 bodies, be kept to present 87mm, alleviated complete machine weight 0.3kg by original 120mm.Spring is divided into fourth gear, and pressure rating 35MPa adds that with the 31.5MPa pressure adjusting spring adjusting pad reaches, and can reduce the pressure adjusting spring free length.Reduce the influence of shaft-like disturbing source, increased pressure regulation stability.Wherein, the spring material that is adopted is an oil quench tempering chrome-silicon Spring Steel Wire (55CrSi).
By remodeling, change 5 bare sizing electro-magnetic valves that do not meet iso standard into 6 bare sizing electro-magnetic valves, according to the ISO standard, be convenient to cooperate in groups, overcome that 5 bare sizing electro-magnetic valve oil sealing surfaces are short, the characteristics of job insecurity.
Latus rectum relief valve of the present utility model has carried out life assessment test 500,000 times on reliability test bench, reached the import component level.
As shown in Figure 1, a kind of latus rectum relief valve, the pressure among the oil circuit A act on the main valve plug 3, and simultaneously, the control access 6 and 7 of pressure through having throttle orifice 4 and 5 acts on the guide valve core 8 of the spring-loaded side of main valve plug 3 and pilot valve 2.If the pressure among the path A surpasses the setting value of pressure adjusting spring 9, then guide valve core 8 overcomes pressure adjusting spring 9 unlatchings.To this, this signal is by controlling oil 10 and 6 from A path internal feed.The fluid of main valve plug 3 spring-loaded sides flows into spring chamber 12 through control access 7, throttling 11 and guide valve core 8.By control circuit 13 from internal feed here; Or outside the supply, introduce fuel tank by control access 14.When throttle orifice 4 and 5 produces pressure drop on main valve plug 3, open by A pipe to B pipe connection mouth.Fluid flows to the B pipe by the A pipe, and the working pressure of setting remains unchanged.Relief valve can be to different pressures (second pressure nominal value) off-load or switching by hydraulic fluid port X (15).
DB10 is two embodiment's models of the present utility model, and DB30 is a control group, and their the key technical indexes contrast is as follows:
| Main performance index and quality requirement | DB10 | DB30 | |
| Pressure maximum MPa | 35 | 31.5 | |
| Peak rate of flow L/min | 250 | 200 | |
| Open and shut characteristic | The unlatching rate | 94 | 90 |
| Make rate | 92 | 88 | |
| Range of regulation MPa | ～5～10～20～31.5～20 | ～5～31.5 | |
| Life-span 〉=ten thousand time | 50 | 25 | |
| Cleaning inside degree≤mg | 14.3 | 15 | |
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; under the prerequisite that does not break away from the utility model spirit and scope; the utility model also has various changes and modifications, 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 (5)
1, a kind of latus rectum relief valve comprises main valve and the pilot valve that is fixed on the main valve, and described main valve comprises main valve plug and main valve housing, and described pilot valve comprises pressure adjusting spring, guide valve core, it is characterized in that, described guide valve core is a sphere structure.
2, latus rectum relief valve as claimed in claim 1 is characterized in that, the oil sealing form between described main valve plug and the main valve housing is the angle square face seal.
3, latus rectum relief valve as claimed in claim 1 is characterized in that, described main valve sectional area is 452mm
2
4, latus rectum relief valve as claimed in claim 1 is characterized in that, the range of regulation of the pressure adjusting spring of described relief valve is five grades of 5MPa, 10MPa, 20MPa, 31.5MPa, 35MPa.
5, latus rectum relief valve as claimed in claim 1 is characterized in that, described pilot valve is 6 bare sizing electro-magnetic valves.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620049234 CN200999897Y (en) | 2006-12-20 | 2006-12-20 | Drift diameter over-flow valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620049234 CN200999897Y (en) | 2006-12-20 | 2006-12-20 | Drift diameter over-flow valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN200999897Y true CN200999897Y (en) | 2008-01-02 |
Family
ID=39014303
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620049234 Expired - Lifetime CN200999897Y (en) | 2006-12-20 | 2006-12-20 | Drift diameter over-flow valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN200999897Y (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102207112A (en) * | 2011-06-13 | 2011-10-05 | 江铃汽车股份有限公司 | Double electronic control pilot type electromagnetic relief valve |
| CN102251998A (en) * | 2011-06-28 | 2011-11-23 | 句容市天龙机械制造厂 | Pilot overflow valve |
| CN102878118A (en) * | 2011-07-11 | 2013-01-16 | 上海立新液压有限公司 | Double-channel control two-way plug-in valve |
| CN104633233A (en) * | 2015-02-11 | 2015-05-20 | 华侨大学 | Overflow valve with magneto-rheological pilot valve |
| CN104819179A (en) * | 2015-04-29 | 2015-08-05 | 苏州固基电子科技有限公司 | Overflow |
| CN107620820A (en) * | 2017-11-23 | 2018-01-23 | 王雅莲 | A kind of adjustable overflow reversal valve calibrated automatically |
| CN110186617A (en) * | 2019-05-31 | 2019-08-30 | 南京晨光集团有限责任公司 | A kind of tooling for transducer calibration |
| WO2020124612A1 (en) * | 2018-12-22 | 2020-06-25 | 董震铭 | Gear pump outlet overflow valve capable of eliminating gas resistance |
-
2006
- 2006-12-20 CN CN 200620049234 patent/CN200999897Y/en not_active Expired - Lifetime
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102207112A (en) * | 2011-06-13 | 2011-10-05 | 江铃汽车股份有限公司 | Double electronic control pilot type electromagnetic relief valve |
| CN102251998A (en) * | 2011-06-28 | 2011-11-23 | 句容市天龙机械制造厂 | Pilot overflow valve |
| CN102251998B (en) * | 2011-06-28 | 2013-12-11 | 句容市天龙机械制造厂 | Pilot overflow valve |
| CN102878118A (en) * | 2011-07-11 | 2013-01-16 | 上海立新液压有限公司 | Double-channel control two-way plug-in valve |
| CN104633233A (en) * | 2015-02-11 | 2015-05-20 | 华侨大学 | Overflow valve with magneto-rheological pilot valve |
| CN104819179A (en) * | 2015-04-29 | 2015-08-05 | 苏州固基电子科技有限公司 | Overflow |
| CN107620820A (en) * | 2017-11-23 | 2018-01-23 | 王雅莲 | A kind of adjustable overflow reversal valve calibrated automatically |
| CN107620820B (en) * | 2017-11-23 | 2019-01-08 | 中宁县鑫杞航农业发展有限公司 | A kind of adjustable overflow reversal valve calibrated automatically |
| WO2020124612A1 (en) * | 2018-12-22 | 2020-06-25 | 董震铭 | Gear pump outlet overflow valve capable of eliminating gas resistance |
| CN110186617A (en) * | 2019-05-31 | 2019-08-30 | 南京晨光集团有限责任公司 | A kind of tooling for transducer calibration |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20080102 |
|
| EXPY | Termination of patent right or utility model |