CN2786391Y - Pilot-operated overflow valve - Google Patents
Pilot-operated overflow valve Download PDFInfo
- Publication number
- CN2786391Y CN2786391Y CN 200420114353 CN200420114353U CN2786391Y CN 2786391 Y CN2786391 Y CN 2786391Y CN 200420114353 CN200420114353 CN 200420114353 CN 200420114353 U CN200420114353 U CN 200420114353U CN 2786391 Y CN2786391 Y CN 2786391Y
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- Prior art keywords
- valve
- main valve
- pressure
- damper
- plug
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- Expired - Fee Related
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Abstract
The utility model discloses a pressure control unit-priority type overflow valve, which is composed of a direct-acting overflow valve and a main valve provided with an inserting piece of a main valve core, wherein the direct-acting overflow valve is composed of a priority valve body, a conical valve core, a pressure regulating spring, a pressure regulating device and a damper, and the main valve is composed of a main valve body, a main valve core, a main valve sleeve, a balancing spring, a spring seat and a damper. The pressure range of the priority type overflow valve, which can be arranged, is large, and the pressure fixing performance is good; the arrangement of the dampers improve the stability of the operation of the overflow valve, and the pressure fluctuation caused by the change of the overflow quantity of the direct-acting overflow valve can be avoided; the oil seal part of the main valve core is a conical surface, and the sealing performance thereof is better than the sealing performance of a cylindrical surface; moreover, the flowing capability is large, and the pressure loss is little; thus, the structure is compact.
Description
One, technical field
The utility model relates to the valve that a kind of pressure control is used, and goes into F16K.
Two, background technique
Valve is an indispensable unit in hydraulic transmission and the control system, specification, kind are a lot, wherein relief valve is used in the pressure control aspect usually, especially the high-pressure high-flow occasion is used often, working pressure is low, the level pressure poor performance and existing relief valve exists, defectives such as because of spillway discharge changes the pressure surge cause greatly, the oil sealing of main valve plug part is cylindrical surface structure usually in addition in the working procedure, and the poor sealing performance of leading, the pressure loss are big.
Three, model utility content
The purpose of this utility model be to provide that a kind of level pressure performance is good, working stability is reliable, can overcome novel valve---the pilot operated compound relief valve that there are many deficiencies in existing relief valve.This valve can adopt following technological scheme to implement: it is made up of direct-acting overflow valve and main valve two parts that have the main valve plug plug-in unit.And direct-acting overflow valve is made up of guide's valve body, poppet valve core, pressure adjusting spring, pressure-regulating device, damper B and damper C, wherein damper B is placed in the valve opening of guide's valve body, conical valve base is placed in right side at damper B, circlip for hole is placed with fixing damper B in the left side, and adopt bonded washer and hexagonal socket head plug to carry out end socket, the poppet valve core of packing into successively from the right of valve opening again, pressure adjusting spring and pressure-regulating device, and damper C packed in the damping hole on guide's valve body, pressure-regulating device is in the valve opening that screws on guide's valve body.Here pressure adjusting spring of She Zhiing and pressure-regulating device are mainly used to be provided with cracking pressure, and the purpose that adopts poppet valve core is in order to dwindle the cone valve bearing area, to improve working pressure and level pressure performance.And primary valve part is made up of main valve body, main valve plug, main valve housing, spring seat, balance spring and damper A, wherein damper A packs in the damping hole on the main valve body and carries out end socket with bonded washer and hexagonal socket head plug, main valve housing is contained in the main valve hole, main valve plug is contained in the main valve housing, and balance spring is put into spring seat after packing in the main valve plug.At last main valve body and direct-acting overflow valve are connected and fixed by plug screw.
The pilot operated compound relief valve that designs and produces according to technique scheme compared with prior art its major advantage is: 1, because the flow that flows out through cone valve is very little, therefore the cone valve bearing area can design very little, pressure adjusting spring power does not need just can obtain higher working pressure very greatly, by transposing inferior stage clip not at the same level, can obtain the system pressure of different stage, but it is big to have the setting pressure scope, the advantage that the level pressure performance is good; 2, because damper C produces damping function in the movement process that main valve plug lifts, improved the stability of relief valve work greatly.Again because of the existence of damper C, when pressure adjusting spring has just been set up stable oil pressure once setting up the back at the epicoele of main valve plug, thus the pressure surge of having avoided direct-acting overflow valve to cause because of the spillway discharge variation; 3, pilot operated compound relief valve is that secondary concentric type relief valve is compared with one-level concentric type relief valve, and the oil sealing of this valve main valve plug partly is the conical surface, and its sealability is better than the cylndrical surface sealing, and through-current capability is big, and the pressure loss is little, so structure is very compact.
Four, description of drawings
Figure, pilot operated compound relief valve structural representation.
Five, embodiment
Pilot operated compound relief valve of the present utility model is described further by following drawings and Examples.As shown in Figure 1, pilot operated compound relief valve is made up of direct-acting overflow valve and main valve two parts that have the main valve plug plug-in unit.And direct-acting overflow valve is made up of guide's valve body 2, poppet valve core 7, pressure adjusting spring 8, pressure-regulating device 9, damper B5 and damper C6, wherein damper B is placed in the valve opening of guide's valve body 2, conical valve base is placed in right side at damper B, circlip for hole is placed with fixing damper B in the left side, and adopt bonded washer and hexagonal socket head plug to carry out end socket, the poppet valve core 7 of packing into successively from the right of valve opening again, pressure adjusting spring 8 and pressure-regulating device 9, and damper C6 packed in the damping hole on guide's valve body, pressure-regulating device is in the valve opening that screws on guide's valve body; And primary valve part is made up of main valve body 1, main valve plug 3, main valve housing 12, spring seat 13, balance spring 11 and damper A4, wherein damper A packs in the damping hole on the main valve body 1 and carries out end socket with bonded washer and hexagonal socket head plug, main valve housing 12 is contained in the main valve hole, main valve plug 3 is contained in the main valve housing 12, and balance spring 11 is put into spring seat 13 after packing in the main valve plug 3.At last main valve body and direct-acting overflow valve are connected and fixed by plug screw.
Its working principle of pilot operated compound relief valve of forming according to said structure is as follows:
Oil pressure among the oil circuit A acts on the lower end surface of main valve plug 3, simultaneously pressure oil acts on through damper A4, oil duct 10 and damper B5, damper C6 on the load side and poppet valve core 7 of balance spring 11 of main valve plug 3, when the input pressure in A chamber is lower than the cracking pressure of pressure adjusting spring 8 settings, the oil pressure of the upper and lower biend of main valve plug equates, the poppet valve core 7 and the main valve plug 3 of pilot valve are in closed condition under the effect of spring force, no flow passes through in the valve.When the input pressure in A chamber raise, the pressure in the A accent of valve, oil duct 10, poppet valve core 7 and valve base chamber cavity volume, the main valve plug epicoele also increased.When the oil pressure in A chamber met and exceeded the cracking pressure that pilot valve pressure adjusting spring 8 sets, then cone valve was opened, and the pressure oil liquid of A cavity segment fluid and main valve plug epicoele is got back to fuel tank through damping hole, cone valve valve port, spring chamber, T chamber passage.Because the effect of damper A, damper B, damper C will produce pressure reduction in the upper and lower chamber of main valve plug 3.If the formed hydraulic coupling of this pressure difference surpasses the pretightening force of balance spring 11 etc. and makes a concerted effort, main valve plug 3 just upwards lifts, and makes the connection of A chamber and T chamber.Pressure difference is that the flow with the damping hole of flowing through increases, pressure reduction increases then, and the opening amount of main valve plug 3 strengthens, if the pretightening force of formed hydraulic coupling of this pressure difference and balance spring 11 etc. makes a concerted effort to keep balance, then the opening of main valve plug 3 keeps certain, and this moment, A cavity pressure oil content became two stock-traders' know-how T chamber oil sump tanks.Pressure adjusting spring 8 is set up the unlatching value by pressure-regulating device 9.
Claims (1)
1, a kind of pilot operated compound relief valve of forming by direct-acting overflow valve and the main valve that has the main valve plug plug-in unit, it is characterized in that direct-acting overflow valve is by guide's valve body (2), poppet valve core (7), pressure adjusting spring (8), pressure-regulating device (9), damper B (5) and damper C (6) form, wherein damper B (5) is placed in the valve opening of guide's valve body (2), conical valve base is placed in right side at damper B, circlip for hole is placed with fixing damper B in the left side, and adopt bonded washer and hexagonal socket head plug to carry out end socket, the poppet valve core (7) of packing into successively from the right of valve opening again, pressure adjusting spring (8) and pressure-regulating device (9), and damper C (6) packed in the damping hole on guide's valve body, pressure-regulating device is in the valve opening that screws on guide's valve body; And primary valve part is made up of main valve body (1), main valve plug (3), main valve housing (12), spring seat (13), balance spring (11) and damper A (4), wherein damper A packs in the damping hole on the main valve body (1) and carries out end socket with bonded washer and hexagonal socket head plug, main valve housing (12) is contained in the main valve hole, main valve plug (3) is contained in the main valve housing (12), and balance spring (11) is put into spring seat (13) after packing in the main valve plug (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420114353 CN2786391Y (en) | 2004-12-17 | 2004-12-17 | Pilot-operated overflow valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420114353 CN2786391Y (en) | 2004-12-17 | 2004-12-17 | Pilot-operated overflow valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2786391Y true CN2786391Y (en) | 2006-06-07 |
Family
ID=36774965
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200420114353 Expired - Fee Related CN2786391Y (en) | 2004-12-17 | 2004-12-17 | Pilot-operated overflow valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2786391Y (en) |
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101000113B (en) * | 2006-12-01 | 2010-11-03 | 华中科技大学 | Middle and high pressure guiding type water pressure reducing valve |
| CN102251998A (en) * | 2011-06-28 | 2011-11-23 | 句容市天龙机械制造厂 | Pilot overflow valve |
| CN101796464B (en) * | 2007-03-13 | 2012-08-29 | 伊顿公司 | Pressure control valve assembly |
| CN102748334A (en) * | 2012-03-12 | 2012-10-24 | 广西柳工机械股份有限公司 | Converging unloading valve |
| CN101929491B (en) * | 2009-06-23 | 2012-10-24 | 上海立新液压有限公司 | Balance valve with secondary pressure overflow |
| CN103062462A (en) * | 2012-12-27 | 2013-04-24 | 中国航空工业集团公司金城南京机电液压工程研究中心 | Incremental digital plug-in mounting overflow valve |
| CN103591350A (en) * | 2013-11-04 | 2014-02-19 | 中国民航大学 | Pilot operated overflow valve for aircraft deicing fluid |
| CN107631065A (en) * | 2016-07-18 | 2018-01-26 | 鞍钢股份有限公司 | A kind of constant flow valve and its method of work |
| CN107725845A (en) * | 2017-10-27 | 2018-02-23 | 四川森洁燃气设备有限公司 | A kind of decompression type regulating valve of high pressure relief device |
| CN107829845A (en) * | 2017-10-27 | 2018-03-23 | 四川森洁燃气设备有限公司 | A kind of automobile fuel gas spray track supply amount adjustment method |
| CN107939555A (en) * | 2017-10-27 | 2018-04-20 | 四川森洁燃气设备有限公司 | A kind of supply amount adjusting apparatus of automobile fuel gas spray rail |
| CN111315991A (en) * | 2019-03-28 | 2020-06-19 | 深圳市大疆创新科技有限公司 | Pump device and agricultural plant protection machine |
| CN114198547A (en) * | 2021-12-22 | 2022-03-18 | 浙江高宇液压机电有限公司 | Pilot-operated overflow valve |
-
2004
- 2004-12-17 CN CN 200420114353 patent/CN2786391Y/en not_active Expired - Fee Related
Cited By (20)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101000113B (en) * | 2006-12-01 | 2010-11-03 | 华中科技大学 | Middle and high pressure guiding type water pressure reducing valve |
| CN101796464B (en) * | 2007-03-13 | 2012-08-29 | 伊顿公司 | Pressure control valve assembly |
| CN101929491B (en) * | 2009-06-23 | 2012-10-24 | 上海立新液压有限公司 | Balance valve with secondary pressure overflow |
| 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 |
| CN102748334A (en) * | 2012-03-12 | 2012-10-24 | 广西柳工机械股份有限公司 | Converging unloading valve |
| CN102748334B (en) * | 2012-03-12 | 2014-12-31 | 广西柳工机械股份有限公司 | Converging unloading valve |
| CN103062462A (en) * | 2012-12-27 | 2013-04-24 | 中国航空工业集团公司金城南京机电液压工程研究中心 | Incremental digital plug-in mounting overflow valve |
| CN103591350A (en) * | 2013-11-04 | 2014-02-19 | 中国民航大学 | Pilot operated overflow valve for aircraft deicing fluid |
| CN103591350B (en) * | 2013-11-04 | 2015-11-18 | 中国民航大学 | A kind of pilot-type relief valve for airplane deicing |
| CN107631065A (en) * | 2016-07-18 | 2018-01-26 | 鞍钢股份有限公司 | A kind of constant flow valve and its method of work |
| CN107631065B (en) * | 2016-07-18 | 2019-08-06 | 鞍钢股份有限公司 | A kind of constant flow valve and its working method |
| CN107725845A (en) * | 2017-10-27 | 2018-02-23 | 四川森洁燃气设备有限公司 | A kind of decompression type regulating valve of high pressure relief device |
| CN107829845A (en) * | 2017-10-27 | 2018-03-23 | 四川森洁燃气设备有限公司 | A kind of automobile fuel gas spray track supply amount adjustment method |
| CN107939555A (en) * | 2017-10-27 | 2018-04-20 | 四川森洁燃气设备有限公司 | A kind of supply amount adjusting apparatus of automobile fuel gas spray rail |
| CN111315991A (en) * | 2019-03-28 | 2020-06-19 | 深圳市大疆创新科技有限公司 | Pump device and agricultural plant protection machine |
| WO2020191730A1 (en) * | 2019-03-28 | 2020-10-01 | 深圳市大疆创新科技有限公司 | Pump device and agricultural plant protection machine |
| CN111315991B (en) * | 2019-03-28 | 2022-07-22 | 深圳市大疆创新科技有限公司 | Pump device and agricultural plant protection machine |
| CN114198547A (en) * | 2021-12-22 | 2022-03-18 | 浙江高宇液压机电有限公司 | Pilot-operated overflow valve |
| CN114198547B (en) * | 2021-12-22 | 2023-10-17 | 浙江高宇液压机电有限公司 | Pilot-operated overflow valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20060607 Termination date: 20100118 |