CN201526552U - Plug-in pilot relief valve - Google Patents
Plug-in pilot relief valve Download PDFInfo
- Publication number
- CN201526552U CN201526552U CN2009201985077U CN200920198507U CN201526552U CN 201526552 U CN201526552 U CN 201526552U CN 2009201985077 U CN2009201985077 U CN 2009201985077U CN 200920198507 U CN200920198507 U CN 200920198507U CN 201526552 U CN201526552 U CN 201526552U
- Authority
- CN
- China
- Prior art keywords
- hole
- valve
- plug
- guide
- main valve
- 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
- Details Of Valves (AREA)
Abstract
The utility model discloses a plug-in pilot relief valve which can quickly close a main spool and comprises a main valve, a pilot valve and a regulating device, wherein the main valve comprises a valve body (1), the main spool (8) and a throttle plate (9); the main spool (8) is provided with a through hole; the through hole is provided with a through hole second part (13) which can lead the throttle plate (9) to move axially; two sides of the through hole second part (13) are respectively provided with a through hole first part (12) and a through hole third part (14); the through hole third part (14) can be detachably connected with a stopper (10); the projection of the section of the through hole of the stopper (10) along the axial direction is fully positioned in the right end surface of the throttle plate (9); the throttle plate (9) is provided with a plurality of axial bulges; the distance from the edge of the axial bulge to the center of the throttle plate (9) is larger than the radius of the through hole first part (12); and the edge of the throttle plate (9) between adjacent axial bulges and the hole wall of the through hole second part (13) have a certain gap.
Description
Technical field
The utility model relates to the relief valve technical field, specifically is a kind of plug-in type precursor overflow valve.
Background technique
Present plug-in type precursor overflow valve, adopt two fixedly structures of damping and an adaptive damping because its pilot stage is general, like this, in the main valve plug closing course, fixedly damping will apply bigger resistance to backflow fluid, thereby cause the main valve plug closing speed slow, make relief valve open and shut characteristic poor (relief valve cracking pressure and closing pressure difference are very big), had a strong impact on the overall performance of the oil hydraulic circuit at relief valve place.
The model utility content
The technical problems to be solved in the utility model is, a kind of plug-in type precursor overflow valve that can the quick-make main valve plug is provided.
The technical solution of the utility model is, a kind of plug-in type precursor overflow valve with following structure is provided, it comprises interconnective main valve, pilot valve and controlling device, described main valve comprise valve body, with the main valve plug of valve body sliding fit, this main valve plug is provided with the through hole that is used to be communicated with pilot valve, the left end of described through hole is positioned at the ingress of main valve, and it also comprises the throttling dish, and this throttling dish is provided with throttle orifice; Be provided with the through hole second portion that one section axial direction that is used to described throttling dish to be installed and can be supplied described throttling rim main valve plug move in the described through hole, the left side of this through hole second portion is a through hole first portion, the right side of described through hole second portion is the through hole third part, bounding means that is used for axial limiting throttling dish of the removable connection of described through hole third part, this bounding means is provided with a through hole that supplies fluid to flow through, and the cross section of this through hole is positioned at throttling dish right side fully along the projection of axial direction; The edge of the left side of described throttling dish is provided with a plurality of projectioies along the axial direction of main valve plug that can be used for the supporting section flow table, described axial raised edge is to the distance at the center of the throttling dish radius greater than through hole first portion, and the edge of the throttling dish between the adjacent axial projection keeps certain distance with the formation gap with the hole wall of through hole second portion.
After adopting said structure, the utility model compared with prior art, described throttling dish has the following advantages: because can move by the axial direction along main valve plug in the through hole second portion, so following unlatching is arranged or closes closed procedure, in the main valve plug opening process, fluid via through holes first portion, through hole second portion and through hole third part flow to pilot valve, under the pressure effect of fluid, the left side of bounding means will be close in throttling dish right side, because the cross section of the through hole of bounding means is positioned at throttling dish right side fully along the projection of the axial direction of main valve plug, so fluid can only flow to the through hole third part through throttle orifice, at this moment, the throttling dish uses as a damping; Close in the closed procedure at main valve plug, the fluid via through holes third part that flows backwards back, through hole second portion and through hole first portion flow to the inlet of main valve, under the pressure effect of the fluid that flows backwards back, the throttling dish will move to left, because described axial raised edge is to the distance at the center of the throttling dish radius greater than through hole first portion, so will having one, the through hole second portion supports axial raised ring surface, like this, after the axial projection of throttling dish is withstood ring surface, the throttling dish will stop to move to left, again because the hole wall of the edge of the throttling dish between the adjacent axial projection and through hole second portion keeps certain distance to form the gap, so the fluid that flows backwards back can flow to the through hole second portion through described gap, flow to through hole first portion then, like this, close in the closed procedure at main valve plug, flow area is bigger, the suffered resistance of the fluid that flows backwards back will reduce greatly, thereby make the main valve plug can quick-make, promptly the utility model plug-in type precursor overflow valve have can the quick-make main valve plug advantage.
As improvement, described axial projection is three, and like this, processing throttling dish is convenient and support is reliable, more helps enforcement of the present utility model.
As further improvement, the flow-passing surface of described main valve plug is an inner arc surface, like this, fluid change in flow in flooding process is relaxed, and reduces air pocket and noise.
As further improvement, described pilot valve comprises guide's valve seat and the guide's spool that cooperates with guide's valve seat orifice; The guide cylinder face of described guide's spool left end cooperates with guide's valve seat interporal lacuna, effective working surface that described guide's spool right-hand member is used for forming with guide's valve seat hole the resistance of variable liquid is a conical surface, like this, the guide cylinder face of guide's spool left end and guide's valve seat Spielpassung will form fixer resistance, help improving the working stability of whole plug-in type precursor overflow valve.
Description of drawings
Fig. 1 is the structural representation of the utility model plug-in type precursor overflow valve.
Fig. 2 is the sectional view (rotation is cutd open) of the utility model throttling dish.
Fig. 3 is the left view of the utility model throttling dish.
Shown in the figure, 1, valve body, 2, valve gap, 3, adjustable lever, 4, first stage clip, 5, spring seat, 6, guide's spool, 7, guide's valve seat, 7.1, guide's valve seat orifice, 8, main valve plug, 9, the throttling dish, 10, bounding means, 11, second stage clip, 12, through hole first portion, 13, the through hole second portion, 14, the through hole third part.
Embodiment
The utility model is described in further detail below in conjunction with accompanying drawing.
The utility model plug-in type precursor overflow valve, it comprises interconnective main valve, pilot valve and controlling device, described main valve comprise valve body 1, with the main valve plug 8 of valve body 1 sliding fit, this main valve plug 8 is provided with the through hole that is used to be communicated with pilot valve, the left end of described through hole is positioned at the ingress of main valve, it also comprises throttling dish 9, and this throttling dish 9 is provided with throttle orifice; Be provided with one section through hole second portion 13 that is used to install described throttling dish 9 and can moves along the axial direction of main valve plug 8 for described throttling dish 9 in the described through hole, the left side of this through hole second portion 13 is a through hole first portion 12, the right side of described through hole second portion 13 is a through hole third part 14, described through hole third part 14 one of removable connection are used for the bounding means 10 of axial limiting throttling dish 9, this bounding means 10 is provided with a through hole that supplies fluid to flow through, and the cross section of this through hole is positioned at throttling dish 9 right sides fully along the projection of axial direction; The edge of the left side of described throttling dish 9 is provided with a plurality of projectioies along the axial direction of main valve plug 8 that can be used for supporting section flow table 9, described axial raised edge is to the distance at the center of throttling dish 9 radius greater than through hole first portion 12, and the edge of the throttling dish 9 between the adjacent axial projection keeps certain distance with the formation gap with the hole wall of through hole second portion 13.Concrete structure is shown in Fig. 1 or 2 or 3.
Described controlling device is an adjustable lever 3, and described axial projection is three, and the flow-passing surface of described main valve plug 8 is an inner arc surface.
Described pilot valve comprises guide's valve seat 7 and the guide's spool 6 that cooperates with guide's valve seat orifice 7.1; Effective working surface that the guide cylinder face of described guide's spool 6 left ends and guide's valve seat orifice 7.1 Spielpassung, described guide's spool 6 right-hand members are used for hindering with the variable liquid of guide's valve seat orifice 7.1 formation is a conical surface.
The valve gap 2 that described plug-in type precursor overflow valve also comprises and valve body 1 is spirally connected, and the spring seat 5 of guide's valve seat 7 sliding fits, be located at first stage clip 4 between adjustable lever 3 and the spring seat 5, be located at second stage clip 11, each Sealing between main valve plug 8 and the guide's valve seat 7, described adjustable lever 3 is rotatably connected with valve gap 2, described guide's valve seat 7 is pushed down and then is fixed in the valve body 1 by valve gap 2, and the right side of described guide's spool 6 and spring seat 5 offset.The particular location of each Sealing does not add and gives unnecessary details as shown in Figure 1.
The center of described throttling dish 9 is provided with a through hole.
Described through hole is followed successively by four sections from left to right, their radius increases successively, wherein, described through hole first portion 12, through hole second portion 13, through hole third part 14 are respectively first section, second section, the 3rd section, and the 4th section first stage clip 4 that is used to lead of through hole, concrete structure is as shown in Figure 1.
Described bounding means 10 is a plug screw, and the center of this plug screw is provided with a through hole that supplies fluid to flow through, and described plug screw and through hole second portion 13 are spirally connected.
Below only be described, but can not be interpreted as it is restriction claim with regard to the utility model preferred embodiment.Structure of the present utility model can have other variations, is not limited to said structure, such as: described axial projection can be four.In a word, all various variations of being done in the protection domain of the utility model product independent claims are all in protection domain of the present utility model.
Claims (4)
1. plug-in type precursor overflow valve, it comprises interconnective main valve, pilot valve and controlling device, described main valve comprise valve body (1), with the main valve plug (8) of valve body (1) sliding fit, this main valve plug (8) is provided with the through hole that is used to be communicated with pilot valve, the left end of described through hole is positioned at the ingress of main valve, it is characterized in that: it also comprises throttling dish (9), and this throttling dish (9) is provided with throttle orifice; Be provided with one section through hole second portion (13) that is used to install described throttling dish (9) and can moves along the axial direction of main valve plug (8) for described throttling dish (9) in the described through hole, the left side of this through hole second portion (13) is through hole first portion (12), the right side of described through hole second portion (13) is through hole third part (14), one of the removable connection of described through hole third part (14) is used for the bounding means (10) of axial limiting throttling dish (9), this bounding means (10) is provided with a through hole that supplies fluid to flow through, and the cross section of this through hole is positioned at throttling dish (9) right side fully along the projection of axial direction; The edge of the left side of described throttling dish (9) is provided with a plurality of projectioies along the axial direction of main valve plug (8) that can be used for supporting section flow table (9), described axial raised edge is to the distance at the center of throttling dish (9) radius greater than through hole first portion (12), and the edge of the throttling dish (9) between the adjacent axial projection keeps certain distance with the formation gap with the hole wall of through hole second portion (13).
2. plug-in type precursor overflow valve according to claim 1 is characterized in that: described axial projection is three.
3. plug-in type precursor overflow valve according to claim 1 is characterized in that: the flow-passing surface of described main valve plug (8) is an inner arc surface.
4. plug-in type precursor overflow valve according to claim 2 is characterized in that: described pilot valve comprises guide's valve seat (7) and the guide's spool (6) that cooperates with guide's valve seat orifice (7.1); Effective working surface that the guide cylinder face of described guide's spool (6) left end and guide's valve seat orifice (7.1) Spielpassung, described guide's spool (6) right-hand member are used for hindering with the variable liquid of guide's valve seat orifice (7.1) formation is a conical surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201985077U CN201526552U (en) | 2009-09-30 | 2009-09-30 | Plug-in pilot relief valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201985077U CN201526552U (en) | 2009-09-30 | 2009-09-30 | Plug-in pilot relief valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201526552U true CN201526552U (en) | 2010-07-14 |
Family
ID=42517839
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009201985077U Expired - Fee Related CN201526552U (en) | 2009-09-30 | 2009-09-30 | Plug-in pilot relief valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201526552U (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102444637A (en) * | 2011-09-27 | 2012-05-09 | 广西柳工机械股份有限公司 | Plug-in overflow valve |
| CN102536941A (en) * | 2012-01-16 | 2012-07-04 | 浙江师范大学 | Overflow-valve device for reversing mechanism in drilling equipment |
| CN102878301A (en) * | 2011-07-12 | 2013-01-16 | 上海立新液压有限公司 | Overflow valve with detachable valve sleeve |
| CN103233936A (en) * | 2013-04-28 | 2013-08-07 | 华侨大学 | Insertion-structure-based pilot-operated electric-hydraulic proportional spill valve |
| CN103291679A (en) * | 2013-06-04 | 2013-09-11 | 浙江大学 | Low-hysteresis overflow valve |
| CN105805073A (en) * | 2016-05-29 | 2016-07-27 | 浙江大学 | Cartridge overflow valve main valve with directional damper |
| CN108005975A (en) * | 2016-10-28 | 2018-05-08 | 上海立新液压有限公司 | A kind of high-efficient simple type sequence valve |
| CN108278393A (en) * | 2018-01-22 | 2018-07-13 | 宁波海宏液压有限公司 | A kind of slide valve type guide one-way overflow valve |
| CN108278234A (en) * | 2018-01-17 | 2018-07-13 | 邵立坤 | Plug-in rotary buffering valve |
-
2009
- 2009-09-30 CN CN2009201985077U patent/CN201526552U/en not_active Expired - Fee Related
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102878301A (en) * | 2011-07-12 | 2013-01-16 | 上海立新液压有限公司 | Overflow valve with detachable valve sleeve |
| CN102444637A (en) * | 2011-09-27 | 2012-05-09 | 广西柳工机械股份有限公司 | Plug-in overflow valve |
| CN102444637B (en) * | 2011-09-27 | 2014-06-18 | 广西柳工机械股份有限公司 | Plug-in overflow valve |
| CN102536941A (en) * | 2012-01-16 | 2012-07-04 | 浙江师范大学 | Overflow-valve device for reversing mechanism in drilling equipment |
| CN103233936A (en) * | 2013-04-28 | 2013-08-07 | 华侨大学 | Insertion-structure-based pilot-operated electric-hydraulic proportional spill valve |
| CN103233936B (en) * | 2013-04-28 | 2016-01-20 | 华侨大学 | A kind of leading type electricity liquid ratio relief valve based on plug-in mounting structure |
| CN103291679B (en) * | 2013-06-04 | 2015-07-15 | 浙江大学 | Low-hysteresis overflow valve |
| CN103291679A (en) * | 2013-06-04 | 2013-09-11 | 浙江大学 | Low-hysteresis overflow valve |
| CN105805073A (en) * | 2016-05-29 | 2016-07-27 | 浙江大学 | Cartridge overflow valve main valve with directional damper |
| CN105805073B (en) * | 2016-05-29 | 2017-08-25 | 浙江大学 | A kind of plug-in overflow valve main valve that there is orientation to damp |
| CN108005975A (en) * | 2016-10-28 | 2018-05-08 | 上海立新液压有限公司 | A kind of high-efficient simple type sequence valve |
| CN108278234A (en) * | 2018-01-17 | 2018-07-13 | 邵立坤 | Plug-in rotary buffering valve |
| CN108278393A (en) * | 2018-01-22 | 2018-07-13 | 宁波海宏液压有限公司 | A kind of slide valve type guide one-way overflow valve |
| CN108278393B (en) * | 2018-01-22 | 2019-06-14 | 宁波海宏液压有限公司 | A kind of slide valve type guide one-way overflow valve |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201526552U (en) | Plug-in pilot relief valve | |
| AU2009344043B2 (en) | Air inductor | |
| CN104040233A (en) | Anti-cavitation valve seat | |
| CN205859196U (en) | The valve body of regulating flow quantity | |
| CN103122884A (en) | Adjustable pilot overflow valve | |
| CN202381435U (en) | Shunting and pressure reducing valve | |
| CN202349272U (en) | Double gate valve | |
| EP3163167B1 (en) | Plug member of gas valve | |
| CN201753789U (en) | Magnetic check valve | |
| CN102367857A (en) | Adjustable force type hydraulic damper | |
| CN202708220U (en) | Noise reduction structure of pump pipeline valve applied to water supplying and draining system | |
| CN105156703A (en) | Regulating gate valve | |
| CN101324281B (en) | Novel reverse flow preventing device | |
| CN205824224U (en) | A kind of flow control valve | |
| CN202056370U (en) | Water-saving valve structure | |
| CN201344294Y (en) | Adjustable cooling valve | |
| CN102454652A (en) | Adjustable hydraulic pilot opening mechanism | |
| CN204372258U (en) | The flow-limiting valve of the plumbing for building equipment robot control system(RCS) with muting function | |
| CN201225424Y (en) | Fixed type one-way throttle valve | |
| CN211343160U (en) | Gas supply system and air supplement unit thereof | |
| CN203926946U (en) | A kind of novel slow-closing check valve | |
| CN103527545A (en) | Combined hydraulic flow control valve | |
| CN102563141A (en) | Direct-acting internally piloted one-way sequence valve | |
| CN204900859U (en) | Regulation formula butterfly valve | |
| CN217422208U (en) | Control valve with small fluid barrier |
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: 20100714 Termination date: 20120930 |