CN201144914Y - Pilot type pressure reducing valve - Google Patents
Pilot type pressure reducing valve Download PDFInfo
- Publication number
- CN201144914Y CN201144914Y CN 200720077867 CN200720077867U CN201144914Y CN 201144914 Y CN201144914 Y CN 201144914Y CN 200720077867 CN200720077867 CN 200720077867 CN 200720077867 U CN200720077867 U CN 200720077867U CN 201144914 Y CN201144914 Y CN 201144914Y
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Abstract
The utility model discloses a pilot pressure reducing valve, relates to the hydraulic control valve field and comprises a main valve body and a guide valve body arranged on the top of the main valve body, wherein the main valve body comprises a main valve seat, a main valve sleeve a valve cartridge, a main valve spring, an oil inlet B, an oil outlet A, a pressure measuring port M and an oil discharging ports Y1; the guide valve body comprises a guide valve seat, an adjusting hand wheel, an adjusting sleeve, a pressure adjusting spring, a non-return valve seat and a plug screw. The valve body is in an open status when in a static state and the oil can flow out of the oil outlet A from the oil inlet B freely through the main valve sleeve and the main valve cartridge. The pilot pressure reducing valve has the advantages that the pilot pressure reducing valve can obtain higher control pressure, has good pressure adjusting stability and is provided an external control port so as to realize multi-level pressure adjustment.
Description
Technical field:
The utility model relates to field of hydraulic control, specifically is a kind of piloted reducer.
Background technique:
The hydraulic pressure that is mainly used to reduce a certain branch road in the hydraulic system of reduction valve makes same hydraulic system that the loop of two above different pressures can be arranged.Traditional piloted reducer, guide's spool are cone valve structure, when high pressure, and the phenomenon with pressure instability of uttering long and high-pitched sounds easily.In addition, be not with the external control mouth, can not realize multistage pressure control.
The model utility content:
Technical problem to be solved in the utility model is to provide a kind of novel piloted reducer.
The utility model for the technological scheme that the technical solution problem adopts is:
A kind of piloted reducer is made of main valve body and the pilot valve body that is installed in the main valve body top, and main valve body comprises that main valve seat, main valve housing, main valve plug, main spool spring, filler opening B, oil outlet A, pressure tap M and drain tap Y1 constitute; The pilot valve body comprises that guide valve seat, adjusting handle, adjustment sleeve, pressure adjusting spring, unidirectional valve seat and plug screw constitute; Have the main valve plug hole in the middle of the described main valve seat, be shaped on a curved slot at the middle part in main valve plug hole and communicate with bottom surface filler opening B, the bottom communicates with the oil outlet A of bottom surface; Be equipped with seal ring in the bottom surface of described main valve body and the interface position of oil outlet A and filler opening B; The inside in described main valve plug hole is equipped with main valve plug, is provided with main valve housing and valve pocket seat ring between the outside of main valve plug and main valve plug hole inwall, is used for fixing main valve plug; On described main valve housing, valve pocket seat ring and main valve plug hole inwall, be provided with seal ring, keep oil leakage phenomenon can not occurring in the main valve plug hole; The inside of described main valve plug forms the main spool spring chamber, and main spool spring is placed main spool spring in the chamber, and the bottom of main spool spring leans on the main spool spring seat, and the upper end leans on the pilot valve body; Centre at described main spool spring seat has throttle orifice.
Have pressure tap M in described main valve body side, pressure tap is a shoulder hole, and communicates with oil outlet A, is provided with first damper in the less shoulder hole of internal diameter, the outside of pressure tap M can be installed pressure valve and be recorded the interior pressure of main valve body, also can pressure tap M be sealed by plug screw and seal ring.
The central longitudinal of described guide valve seat is to having the pilot valve hole of running through, and the two ends in pilot valve hole are provided with adjusting handle and plug screw fixing seal, and locking nut and spacer ring are installed in the position that device has screw and pilot valve hole to join in described adjusting handle; The bottom in described pilot valve hole has the first pilot valve hole that links to each other with pressure tap M, the second pilot valve hole that communicates with main valve hole, the 3rd pilot valve hole that communicates with drain tap Y1; Make two the external control mouth X that are threaded, external leaks hydraulic fluid port Y respectively in the both sides of described guide valve seat, external leaks hydraulic fluid port Y communicates with the pressure adjusting spring chamber at pressure adjusting spring place, and external control mouth X communicates with the pilot valve hole; Position at described external leaks hydraulic fluid port Y and external control mouth X and guide valve seat interface can be respectively by plug screw and seal ring sealing (referring to Fig. 2).
Described pilot valve is provided with unidirectional valve seat and adjustment sleeve in the hole, and all seal between the pilot valve hole with seal ring, in described unidirectional valve seat, have the nonreturn valve core hole, be the shoulder hole form, be provided with valve seat from left to right in the described unidirectional valve opening, first steel ball and second damper, valve seat and nonreturn valve core hole inwall are fixed by seal ring, the center has a little penetration hole, second damper is arranged on the centre in nonreturn valve core hole, place first steel ball at described second damper and valve base chamber, steel ball and penetration hole surface of contact match.
The inside of described adjustment sleeve forms the pressure adjusting spring chamber, pressure adjusting spring is provided with pressure adjusting spring in the chamber, one end of pressure adjusting spring leans on the pressure adjusting spring seat, the other end leans on cone valve, be provided with second steel ball in the cone valve and be connected with unidirectional valve seat, the part on described second steel ball is embedded in the nonreturn valve core hole.
Working principle of the present utility model is: when static position, valve body is in opening state, and fluid is free to flow to oil outlet A from filler opening B through main valve housing, main valve plug.At this moment the pressure of oil outlet A acts on the bottom side of main valve plug, simultaneously, and the main spool spring chamber of pressure oil above throttle orifice acts on main valve plug, and enter the pilot valve body and act on second steel ball.Equally, pressure acts on second steel ball through first damper, valve seat, second damper.According to the setting of pressure adjusting spring,, keep main valve plug to be in the enable possition in the built-in pressure in the front portion and main spool spring chamber of second steel ball.Fluid can freely flow to oil outlet A from filler opening B through main valve housing, main valve plug, surpasses the setting value of pressure adjusting spring until the pressure of oil outlet A, and opens second steel ball, and main valve plug moves to closed position.When reaching balance between the pressure of oil outlet A and the pressure adjusting spring setting pressure, the decompression pressure that obtains being scheduled to.Control oil can return fuel tank from the pressure adjusting spring chamber through the Y1 mouth of main valve body bottom or the Y mouth of pilot valve body.As removing plug screw, the M mouth can be used as pressure tap and links to each other with pressure gauge, and the decompression pressure of oil outlet A is monitored.
The beneficial effects of the utility model are that piloted reducer can obtain higher pilot pressure, the pressure regulation good stability, and band external control mouth can be realized multi-stage pressure regulating.
Description of drawings:
Fig. 1 is a structural representation of the present utility model;
Fig. 2 is the utility model A-A face sectional view;
Fig. 3 is the utility model left view;
Among the figure:
The 1-main valve body; 2-pilot valve body; The 22-adjusting handle; The 23-screw; The 24-locking nut;
The 25-spacer ring; The 3-main valve seat; The 31-main valve housing; 32-valve pocket base; 33-main valve plug hole;
The 34-main valve plug; The 35-curved slot; 36-first damper; The 4-main spool spring;
41-main spool spring chamber; 42-main spool spring seat; The 43-throttle orifice; The 5-guide valve seat;
The 6-pressure adjusting spring; 61-pressure adjusting spring chamber; 62-pressure spring seat; The 63-cone valve;
The unidirectional valve seat of 7-; 71-nonreturn valve core hole; 72-second damper; The 73-valve seat; The 74-perforation;
75-first steel ball; 76-second steel ball; The 8-adjustment sleeve; The 9-plug screw; The 10-seal ring.
Embodiment:
Below in conjunction with drawings and the specific embodiments the utility model is done further introduction:
Referring to Fig. 1,
Embodiment one: a kind of piloted reducer comprises main valve body 1 and pilot valve body 2, pilot valve body 2 is embedded in the top of main valve body 1, constitute by main valve seat 3, main valve housing 31, main valve plug 34, main spool spring 4, filler opening B, oil outlet A, pressure tap M and drain tap Y1 in the main valve body 1, the centre of main valve seat 3 has main valve plug hole 33, be shaped on a curved slot 35 communicates with bottom surface filler opening B at the middle part in main valve plug hole 33, the bottom communicates with the oil outlet A of bottom surface, is equipped with seal ring 10 at the interface position of the bottom surface of main valve body 1 oil outlet A and filler opening B.
Inside at main valve plug 34 forms main spool spring chamber 41, places main spool spring 4 in the main spool spring chamber 41, and the bottom of main spool spring 4 leans on main spool spring seat 42, and the upper end leans on pilot valve body 2, and the centre of main spool spring seat 42 has throttle orifice 43.
Have pressure tap M in main valve body 1 side, pressure tap M is a shoulder hole, A communicates with oil outlet, first damper 36 is set in the less shoulder hole of internal diameter, at this moment the outside of pressure tap M can be installed pressure valve and is used to record pressure in the main valve body 1, also can pressure tap M be sealed by plug screw 9 and seal ring 10.
Referring to Fig. 2, Fig. 3, pilot valve body 2 is made of guide valve seat 5, adjusting handle 22, adjustment sleeve 8, pressure adjusting spring 6, unidirectional valve seat 7 and plug screw 9, the central longitudinal of guide valve seat 5 is to having the pilot valve hole of running through 51, and the two ends in pilot valve hole 51 are provided with adjusting handle 22 and plug screw 9 fixing seals.
Device has screw 23 in adjusting handle 22, with the locking nut 24 of pilot valve hole 51 connecting positions and the pressure of spacer ring 25 common sealings and adjusting pressure adjusting spring 6, the bottom in pilot valve hole 51 has the first pilot valve hole 52 that links to each other with pressure tap M, the second pilot valve hole 53 that communicates with main valve plug hole 33, the 3rd pilot valve hole 54 that communicates with drain tap Y1, bi-side at pilot valve body 2, make two threaded connection holes respectively, one communicates with pressure adjusting spring chamber, pressure adjusting spring 6 place 61, as alternative external leaks hydraulic fluid port Y, this mouthful communicates with the drain tap Y1 of main valve body 1 bottom surface; Another communicates with pilot valve hole 51 on the guide valve seat 5, as external control mouth X.When not needing to use external control mouth X, block with plug screw 9, when not needing to use external leaks hydraulic fluid port Y, block with plug screw 9 and seal ring 10.
In pilot valve hole 51, be provided with unidirectional valve seat 7 and adjustment sleeve 8, and seal with seal ring 10 between the pilot valve hole 51, have nonreturn valve core hole 71 in the unidirectional valve seat 7, be the shoulder hole form, valve seat 73 is set in the nonreturn valve core hole 71 from left to right, first steel ball 75 and second damper 21, valve seat 73 is fixing by seal ring 10 with nonreturn valve core hole 71 inwalls, the center has a little penetration hole 74, second damper 72 is arranged on the centre in nonreturn valve core hole 71,73 of second damper 21 and valve seats place first steel ball, 75, the first steel balls 75 and penetration hole 74 surface of contact match.
Inside at adjustment sleeve 8 forms pressure adjusting spring chamber 61, be provided with pressure adjusting spring 6 in the pressure adjusting spring chamber 61, one end of pressure adjusting spring 6 leans on pressure adjusting spring seat 62, the other end leans on cone valve 63, be provided with second steel ball 76 in the cone valve 63 and be connected with unidirectional valve seat 7, the part on second steel ball 76 is embedded in the nonreturn valve core hole 71 of unidirectional valve seat 7.When static position, valve body is in opening state, and fluid is free to flow to oil outlet A from filler opening B through main valve housing, main valve plug.
Embodiment two: reduction valve carries out multistage pressure control if desired, can realize by external control mouth X.X mouth and one or two outside pressure regulator valve are joined by switch valve, and the setting pressure of outside pressure regulator valve is lower than the pressure that reduction valve is set by pressure adjusting spring 6.When switch valve cut out, the X mouth cut off with extraneous, and the pressure that pressure adjusting spring 6 is set is decompression pressure; When switch valve was opened, the X mouth communicated with some outside pressure regulator valves, and the pressure that outside pressure regulator valve is set is decompression pressure.
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 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. piloted reducer, constitute by main valve body and the pilot valve body that is installed in the main valve body top, main valve body comprises main valve seat, main valve housing, main valve plug, main spool spring, filler opening B, oil outlet A, pressure tap M and drain tap Y1, the pilot valve body comprises guide valve seat, adjusting handle, adjustment sleeve, pressure adjusting spring, unidirectional valve seat and plug screw constitute, it is characterized in that: have the main valve plug hole in the middle of the described main valve seat, be shaped on a curved slot communicates with bottom surface filler opening B at the middle part in main valve plug hole, the bottom communicates with the oil outlet A of bottom surface, the inside of described main valve plug forms the main spool spring chamber, main spool spring is placed main spool spring in the chamber, the bottom of main spool spring leans on the main spool spring seat, the upper end leans on the pilot valve body, has throttle orifice in the centre of described main spool spring seat; The central longitudinal of described guide valve seat is to having the pilot valve hole of running through, the two ends in pilot valve hole are provided with adjusting handle and plug screw fixing seal, the both sides of described guide valve seat are made two external control mouth X that are threaded respectively, external leaks hydraulic fluid port Y, external leaks hydraulic fluid port Y communicates with the pressure adjusting spring chamber at pressure adjusting spring place, external control mouth X communicates with the pilot valve hole, described pilot valve is provided with unidirectional valve seat and adjustment sleeve in the hole, in described unidirectional valve seat, have the nonreturn valve core hole, be the shoulder hole form, the inside of described adjustment sleeve forms the pressure adjusting spring chamber, pressure adjusting spring is provided with pressure adjusting spring in the chamber, one end of pressure adjusting spring leans on the pressure adjusting spring seat, the other end leans on cone valve, is provided with second steel ball in the cone valve and is connected with unidirectional valve seat, and the part on described second steel ball is embedded in the nonreturn valve core hole.
2. piloted reducer according to claim 1 is characterized in that: the interface position of the bottom surface of described main valve body and oil outlet A and filler opening B is provided with seal ring.
3. piloted reducer according to claim 1, it is characterized in that: described main valve body side has pressure tap M, pressure tap is a shoulder hole, and communicate with oil outlet A, in the less shoulder hole of internal diameter, be provided with first damper, the outside of pressure tap M can be installed pressure valve and be recorded the interior pressure of main valve body, also can pressure tap M be sealed by plug screw and seal ring.
4. piloted reducer according to claim 1 is characterized in that: the position of described external leaks hydraulic fluid port Y and external control mouth X and guide valve seat interface is respectively by plug screw and seal ring sealing.
5. piloted reducer according to claim 4 is characterized in that: be provided with valve seat from left to right in the described unidirectional valve opening, and first steel ball and second damper, valve seat and nonreturn valve core hole inwall are fixed by seal ring, and the center has a little penetration hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200720077867 CN201144914Y (en) | 2007-12-29 | 2007-12-29 | Pilot type pressure reducing valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200720077867 CN201144914Y (en) | 2007-12-29 | 2007-12-29 | Pilot type pressure reducing valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201144914Y true CN201144914Y (en) | 2008-11-05 |
Family
ID=40081791
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200720077867 Expired - Fee Related CN201144914Y (en) | 2007-12-29 | 2007-12-29 | Pilot type pressure reducing valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201144914Y (en) |
Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101672388B (en) * | 2009-09-28 | 2010-12-29 | 常州市汇丰船舶附件制造有限公司 | High-pressure pressure-reducing valve set |
| CN102753838A (en) * | 2009-12-18 | 2012-10-24 | 诺格伦有限责任公司 | Multiple-stage valve system |
| CN101871543B (en) * | 2009-04-23 | 2013-01-09 | 昆明物理研究所 | Parallel time-delay pressure-reducing valve |
| CN102878133A (en) * | 2011-07-12 | 2013-01-16 | 上海立新液压有限公司 | Constant-pressure control valve |
| CN103089728A (en) * | 2011-11-02 | 2013-05-08 | 广西柳工机械股份有限公司 | Differential type pilot overflow valve |
| CN103122883A (en) * | 2011-11-18 | 2013-05-29 | 广西柳工机械股份有限公司 | Adjustable pilot reducing valve |
| CN103122881A (en) * | 2011-11-18 | 2013-05-29 | 广西柳工机械股份有限公司 | Pilot reducing valve |
| CN103122882A (en) * | 2011-11-18 | 2013-05-29 | 广西柳工机械股份有限公司 | Adjustable pilot overflow valve |
| CN101893120B (en) * | 2009-05-18 | 2014-01-01 | 昆明物理研究所 | Active delay pressure-reducing valve |
| CN104196794A (en) * | 2014-07-31 | 2014-12-10 | 红安安达新材料有限责任公司 | Pressure reducing valve |
| CN104343759A (en) * | 2013-07-23 | 2015-02-11 | 武汉机械股份有限公司 | Pressure regulating valve |
| CN105570503A (en) * | 2016-02-17 | 2016-05-11 | 江西昌河汽车有限责任公司 | Bidirectional valve device of automobile fuel system |
| CN108131347A (en) * | 2017-12-25 | 2018-06-08 | 宁波文泽机电技术开发有限公司 | No leakage three-way pressure reducing valve |
| CN108252976A (en) * | 2018-01-23 | 2018-07-06 | 邵立坤 | A kind of two-way buffer valve |
| CN108386418A (en) * | 2018-04-10 | 2018-08-10 | 中国人民解放军火箭军工程大学 | A kind of pilot operated compound relief valve main valve plug displacement detector |
| CN113983018A (en) * | 2021-10-28 | 2022-01-28 | 浙江华巨液压科技有限公司 | One-way pressure reducing valve |
-
2007
- 2007-12-29 CN CN 200720077867 patent/CN201144914Y/en not_active Expired - Fee Related
Cited By (26)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101871543B (en) * | 2009-04-23 | 2013-01-09 | 昆明物理研究所 | Parallel time-delay pressure-reducing valve |
| CN101893120B (en) * | 2009-05-18 | 2014-01-01 | 昆明物理研究所 | Active delay pressure-reducing valve |
| CN101672388B (en) * | 2009-09-28 | 2010-12-29 | 常州市汇丰船舶附件制造有限公司 | High-pressure pressure-reducing valve set |
| CN102753838A (en) * | 2009-12-18 | 2012-10-24 | 诺格伦有限责任公司 | Multiple-stage valve system |
| CN102753838B (en) * | 2009-12-18 | 2016-01-13 | 诺格伦有限责任公司 | Multiple-stage valve system |
| CN102878133A (en) * | 2011-07-12 | 2013-01-16 | 上海立新液压有限公司 | Constant-pressure control valve |
| CN103089728A (en) * | 2011-11-02 | 2013-05-08 | 广西柳工机械股份有限公司 | Differential type pilot overflow valve |
| CN103089728B (en) * | 2011-11-02 | 2016-03-16 | 广西柳工机械股份有限公司 | Differential type pilot overflow valve |
| CN103122881A (en) * | 2011-11-18 | 2013-05-29 | 广西柳工机械股份有限公司 | Pilot reducing valve |
| CN103122883B (en) * | 2011-11-18 | 2015-09-02 | 广西柳工机械股份有限公司 | Adjustable pilot reduction valve |
| CN103122882A (en) * | 2011-11-18 | 2013-05-29 | 广西柳工机械股份有限公司 | Adjustable pilot overflow valve |
| CN103122881B (en) * | 2011-11-18 | 2016-01-27 | 广西柳工机械股份有限公司 | Guide's reduction valve |
| CN103122882B (en) * | 2011-11-18 | 2016-03-09 | 广西柳工机械股份有限公司 | Adjustable pilot overflow valve |
| CN103122883A (en) * | 2011-11-18 | 2013-05-29 | 广西柳工机械股份有限公司 | Adjustable pilot reducing valve |
| CN104343759A (en) * | 2013-07-23 | 2015-02-11 | 武汉机械股份有限公司 | Pressure regulating valve |
| CN104343759B (en) * | 2013-07-23 | 2016-02-24 | 武汉机械股份有限公司 | pressure maintaining valve |
| CN104196794A (en) * | 2014-07-31 | 2014-12-10 | 红安安达新材料有限责任公司 | Pressure reducing valve |
| CN105570503A (en) * | 2016-02-17 | 2016-05-11 | 江西昌河汽车有限责任公司 | Bidirectional valve device of automobile fuel system |
| CN108131347A (en) * | 2017-12-25 | 2018-06-08 | 宁波文泽机电技术开发有限公司 | No leakage three-way pressure reducing valve |
| CN108131347B (en) * | 2017-12-25 | 2019-11-26 | 江苏佳佩环保机械设备有限公司 | No leakage three-way pressure reducing valve |
| CN108252976A (en) * | 2018-01-23 | 2018-07-06 | 邵立坤 | A kind of two-way buffer valve |
| CN108252976B (en) * | 2018-01-23 | 2020-11-06 | 义乌市思淇工业设计有限公司 | Two-way buffer valve |
| CN108386418A (en) * | 2018-04-10 | 2018-08-10 | 中国人民解放军火箭军工程大学 | A kind of pilot operated compound relief valve main valve plug displacement detector |
| CN108386418B (en) * | 2018-04-10 | 2023-07-18 | 中国人民解放军火箭军工程大学 | Pilot-operated overflow valve main valve core displacement detection device |
| CN113983018A (en) * | 2021-10-28 | 2022-01-28 | 浙江华巨液压科技有限公司 | One-way pressure reducing valve |
| CN113983018B (en) * | 2021-10-28 | 2023-08-18 | 浙江三尚智迪科技有限公司 | One-way pressure reducing valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20081105 Termination date: 20161229 |