CN108167253A - Buffer overflow valve - Google Patents
Buffer overflow valve Download PDFInfo
- Publication number
- CN108167253A CN108167253A CN201711440840.XA CN201711440840A CN108167253A CN 108167253 A CN108167253 A CN 108167253A CN 201711440840 A CN201711440840 A CN 201711440840A CN 108167253 A CN108167253 A CN 108167253A
- Authority
- CN
- China
- Prior art keywords
- hydraulic fluid
- fluid port
- valve
- main valve
- buffer overflow
- 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.)
- Withdrawn
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B13/00—Details of servomotor systems ; Valves for servomotor systems
- F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
- F15B13/023—Excess flow valves, e.g. for locking cylinders in case of hose burst
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B13/00—Details of servomotor systems ; Valves for servomotor systems
- F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
- F15B13/029—Counterbalance valves
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Safety Valves (AREA)
Abstract
The present invention proposes a kind of buffer overflow valve, including：Valve body which is provided with hydraulic fluid port A and hydraulic fluid port B；Valve pocket is buffered, be located in the valve body and separates hydraulic fluid port A and hydraulic fluid port B, is equipped with main valve core cavity connect with hydraulic fluid port A, and cushion chamber is formed with valve body in the buffering valve pocket, trimmer valve is put on equipped with the damp channel for connecting hydraulic fluid port A and cushion chamber；Main valve plug is connected in the main valve core cavity and is crimped on the valve port of main valve core cavity；And swivel nut, the other end of the valve body is connected to, the swivel nut is interior to be equipped with pressure regulating device, and the pressure regulating device connect the keying of control bound core with one end of the main valve plug.The buffer overflow valve can effectively shock absorbing pressure and structure be simpler, processing is more convenient.
Description
Technical field
The present invention relates to valve technology fields, and in particular to a kind of buffer overflow valve.
Background technology
In modern mechanical equipment slewing equipment, pooling feature hydraulic circuit has been widely applied, has been filled as excavator turns round
It puts, crane rotation device, high-altitude operation vehicle slewing equipment, manipulator slewing equipment and agriculture and forestry machinery slewing equipment etc., wherein
Buffer overflow valve is the key that this kind of system Hydraulic Elements, and the quality of buffer overflow valve performance directly affects the performance of host.
Existing buffer overflow valve is divided into two kinds of board-like buffer overflow valve and plug-in buffer overflow valve by connection mode, in systems for
Reduction installation space improves system reliability, generally using plug-in buffer overflow valve.If notification number is CN202073860
The patent of entitled " threaded plug-in adjustable buffer overflow valve ", discloses a kind of buffer overflow valve, including valve pocket, valve seat,
Spool, spring and damper piston, valve pocket have the first hydraulic fluid port, and valve seat is set on the front end of valve pocket and with the second hydraulic fluid port, spool
In valve pocket, pressure regulation swivel nut has front end inner cavity, can simultaneously be moved axially set on the rear end of valve pocket and then can change spring
Axial elastic force, after damper piston includes the guide part, the projecting ring section of middle part radial protrusion and front end axially open and spool of rear end
The volumetric cylinder portion of end cooperation, the rear end face of projecting ring section are more than front end face, have among projecting ring section for after the calm canister portion flow direction of fluid
The interface channel in outside is held, volumetric cylinder portion laterally has the side path flowed to for the calm canister portion inner cavity of fluid to volumetric cylinder portion outer wall.
Although the invention can realize simple buffering relief function, its structure is complex, and volume is bigger, is processing and is filling
More demanding in matching, synthesis is of high cost；In addition it sets up the first stage pressure by Adjusting bolt Adjusting screw, and the pressure of the second hydraulic fluid port was before this
First order pressure overflow is risen rapidly to, then damper piston again compresses spring by second mouthful of pressure rise to second
Stage pressure is mounted on damping hole on the plug of spool front end, is played when first order pressure conversion is to the second stage pressure
It controls the effect of buffer time, but because of damping hole thus and the longer through-flow hole length of valve core inside, reduces the sound of spool
Speed is answered, starts and stops on more frequent equipment (such as mini-excavator) using very undesirable in revolution.
Invention content
For some or all of of the above-mentioned technical problem in the presence of the prior art, the present invention proposes a kind of buffering
Overflow valve, the buffer overflow valve can effectively shock absorbing pressure and structure be simpler, processing is more convenient, damp channel is shorter
It can meet and turn round frequent operating mode use.
In order to realize more than goal of the invention, the present invention proposes a kind of buffer overflow valve having following structure, including：
Valve body which is provided with hydraulic fluid port A and hydraulic fluid port B；
Buffer valve pocket, slip is located in the valve body and separates hydraulic fluid port A and hydraulic fluid port B, be equipped in the buffering valve pocket with
The main valve core cavity of hydraulic fluid port A connections, and cushion chamber is formed with valve body, trimmer valve puts on the resistance equipped with connection hydraulic fluid port A and cushion chamber
Buddhist nun's channel；
Main valve plug is connected in the main valve core cavity and is crimped on the valve port of main valve core cavity；
Swivel nut is connected to the other end of the valve body, pressure regulating device, the pressure regulating device and institute is equipped in the swivel nut
State the keying of one end connection control bound core of main valve plug.
In one embodiment, the damp channel include the sequentially connected damping hole for being located at buffering valve pocket lower part and
First through flow hole, the damping hole are connected with hydraulic fluid port A, and first through flow hole is connected with cushion chamber.
In the present invention, due to simplifying parts and structure, more reasonable structure is simpler, and processing is also more convenient；It is set
The damp channel put is shorter, can meet the use for turning round frequent operating mode.
In one embodiment, the pressure regulating device includes elastic component, and the elastic component is connected in the swivel nut
Connect base on, the connect base is connected with adjusting rod, and the adjusting rod is threadedly coupled with the swivel nut, the adjusting rod
It is connected in the connect base across the bottom of the swivel nut, locking nut is also socketed with outside the adjusting rod.Pass through adjusting
Main valve plug Opening pressure during overflow is adjusted in bar.
In one embodiment, when hydraulic fluid port A oil inlets, fluid through connect the first passage of main valve core cavity and hydraulic fluid port A into
It becomes owner of spool chamber and overcomes the open-top main valve plug of the active force of elastic component, from hydraulic fluid port B overflows, the pressure of hydraulic fluid port A is first order pressure at this time
Power；The pressure of hydraulic fluid port A enters cushion chamber and buffering valve pocket is pushed to be moved to pressure regulating device direction, and the pressure of hydraulic fluid port A needs to overcome bullet
The active force of property part, hydraulic fluid port A's is stepped up to the second stage pressure.
In one embodiment, the main valve plug includes sequentially connected first end, conical surface portion, cylindrical portion and second
End, is equipped with transition conical surface portion between the cylindrical portion and the second end, the diameter of the first end is more than main valve core cavity
Diameter, the diameter of the cylindrical portion are less than the diameter of main valve core cavity, and the diameter of the second end is more than the straight of the cylindrical portion
Diameter, the second end are slidably matched with main valve core cavity.
In one embodiment, the connector for connecting pressure regulating device, the company are additionally provided on the first end
The diameter of fitting is more than the diameter of the first end.
In one embodiment, the buffering valve pocket is equipped with the valve body prevents hydraulic fluid port A to hydraulic fluid port B and buffering
The sealing element of chamber leakage.
Compared with prior art, the advantage of the invention is that：
Not only parts are less for the buffer overflow valve of the present invention, and structure is simpler, and processing is more convenient, and damp channel is shorter,
While more effectively shock absorbing pressure is met, it also can preferably meet swing mechanism and the mechanism for requiring reaction speed fast
Operating pressure requirement.
Description of the drawings
The preferred embodiment of the present invention is described in detail below in conjunction with attached drawing, in figure：
Fig. 1 is the structure diagram of the one of which embodiment of the buffer overflow valve of the present invention.
In attached drawing, identical component uses identical reference numeral.Attached drawing is not drawn according to practical ratio.
Specific embodiment
In order to which technical scheme of the present invention and advantage is more clearly understood, below in conjunction with attached drawing to the exemplary of the present invention
Embodiment is described in more detail.Obviously, described embodiment be only the present invention part of the embodiment rather than
The exhaustion of all embodiments.And in the absence of conflict, the feature in the embodiment and embodiment in the present invention can be mutual
It is combined.
Inventor invention during it is noted that existing threaded plug-in adjustable buffer overflow valve there are it is complicated,
Difficulty of processing is big, of high cost and the problems such as be not suitable for turning round frequent operating mode.
For above deficiency, the embodiment of the present invention proposes a kind of buffer overflow valve, is illustrated below.
Fig. 1 shows a kind of one of which embodiment of buffer overflow valve of the present invention.In this embodiment, it is of the invention
Buffer overflow valve mainly includes：Valve body 6, buffering valve pocket 4, main valve plug 5, swivel nut 8 and pressure regulating device.Wherein, the middle part of valve body 6 is set
There are hydraulic fluid port A and hydraulic fluid port B.The buffering slip of valve pocket 4 is located in valve body 6, and buffering valve pocket separates hydraulic fluid port A and hydraulic fluid port B on valve body 6, delays
It rushes valve pocket and the cushion chamber 61 being connect with hydraulic fluid port A is formed in the lower end of valve body 6, trimmer valve is put on equipped with connection hydraulic fluid port A and buffering
The damp channel of chamber 61.The main valve core cavity 44 connected with hydraulic fluid port A and connection hydraulic fluid port A and main valve core cavity 44 are equipped in buffering valve pocket
First passage.Main valve plug 5 is connected to the valve port that main valve core cavity is blocked in main valve core cavity 44.Swivel nut 8 is connected to the another of valve body 6
End (being upper end in Fig. 1), pressure regulating device is located in swivel nut 8.Pressure regulating device connect opening for control bound core with one end of main valve plug 5
The pressure for opening and closing.
In one embodiment, the upper damp channel of trimmer valve set mainly includes being located at successively connecting for buffering 4 lower part of valve pocket
41 and first through flow hole 42 of damping hole connect, the damping hole are connected with hydraulic fluid port A, and first through flow hole 42 connects with cushion chamber 61
It is logical.
In one embodiment, main valve core cavity 44 is located at the middle and upper part of buffering valve pocket 4, and buffering valve pocket 4 is equipped with to connect
The first passage of logical hydraulic fluid port A and main valve core cavity 44.The first passage is mainly by the recess portion 45 that is located on buffering valve pocket 4 and oblique logical
The connection of hole 43 is formed.Since the through-current capacity of the first passage is bigger, thus in pressure change, the unlatching of main valve plug 6 and pass
It closes and is swift in response.
In one embodiment, pressure regulating device mainly includes elastic component 7, and connect base 9 is equipped in swivel nut 8, elastic component 7
Upper end is connected in the connect base 9.Connect base 9 is connected with adjusting rod 10, and adjusting rod 10 is connected through a screw thread with swivel nut 8,
Adjusting rod 10 passes through the upper end bottom of swivel nut 8 to be connected in connect base 9, and locking nut 11 is also socketed with outside adjusting rod 10.
In one embodiment, when hydraulic fluid port A oil inlets, fluid enters main valve core cavity 44 through first passage and overcomes elastic component 7
The open-top main valve plug 5 of active force, from hydraulic fluid port B overflows, the pressure of hydraulic fluid port A is first class pressure at this time.Meanwhile the pressure of hydraulic fluid port A into
Entering cushion chamber 61 pushes buffering valve pocket to be moved (to move up in Fig. 1) to pressure regulating device direction, and the pressure needs of hydraulic fluid port A overcome
The active force of elastic component 7, hydraulic fluid port A's is stepped up to the second stage pressure.
In one embodiment, main valve plug 5 mainly includes sequentially connected first end, conical surface portion, cylindrical portion and second
End.Transition conical surface portion is equipped between cylindrical portion and the second end, the diameter of first end is more than the diameter of main valve core cavity, cylinder
The diameter in portion is less than the diameter of main valve core cavity, and the diameter of the second end is more than the diameter of cylindrical portion, the second end and main valve core cavity
It is slidably matched.When conical surface portion is crimped on the valve port of main valve core cavity 44, the communicating passage between hydraulic fluid port A and hydraulic fluid port B, pressure regulation are closed
Main valve plug 5 is crimped on buffering valve pocket 4 by mechanism by the first end of main valve plug 5.
In one embodiment, the connector 12 for connecting pressure regulating device is additionally provided on first end, connector 12 is whole
Body is truncated cone-shaped, and the minimum diameter of the connector 12 of the truncated cone-shaped is more than the diameter of first end.
In one embodiment, buffering valve pocket 4 is equipped with valve body 6 prevents what hydraulic fluid port A from leaking to hydraulic fluid port B and cushion chamber
Sealing element 3 and sealing element 2.In addition, the middle part of lower end outside, valve body 6 as valve body 6 and the male threaded joint of swivel nut 8 are equal
Equipped with sealing element.
In one embodiment, basic functional principle of the invention is as follows：
The simple and reasonable of valve pocket 4 is buffered, is slided up and down in valve body 6, such mechanism so that the first stage pressure is straight
It connects open-top main valve plug 5 and carries out overflow, while enter after the damp channel that is made up of damping hole 41, the first through flow hole 42 of fluid
In cushion chamber 61, after the pressure in cushion chamber 61 rises, buffering valve pocket 4 is gradually pushed to move up and reduces opening for main valve plug 5
Mouthful, it is gradually increasing A mouthfuls of pressure and main valve plug 5 is pushed to move upwards compression elastic piece 7, hydraulic fluid port A pressure is made finally to rise to second
Stage pressure.Damp channel is fairly simple and shorter, can be with quick response in frequent operating mode is turned round.
Although preferred embodiments of the present invention have been described, but those skilled in the art once know basic creation
Property concept, then additional changes and modifications may be made to these embodiments.Therefore, appended claims are intended to be construed to include excellent
Select embodiment and fall into having altered and/or changing for the scope of the invention, the change made according to an embodiment of the invention and/
Or modification should be covered by the protection scope of the present invention.
Claims (7)
1. a kind of buffer overflow valve, which is characterized in that including：
Valve body which is provided with hydraulic fluid port A and hydraulic fluid port B；
Buffer valve pocket, slip is located in the valve body and separates hydraulic fluid port A and hydraulic fluid port B, is equipped in the buffering valve pocket and hydraulic fluid port A
The main valve core cavity of connection, and cushion chamber is formed with valve body, trimmer valve puts on the damping equipped with connection hydraulic fluid port A and cushion chamber and leads to
Road；
Main valve plug is connected in the main valve core cavity and is crimped on the valve port of main valve core cavity；And
Swivel nut is connected to the other end of the valve body, pressure regulating device, the pressure regulating device and the master is equipped in the swivel nut
The keying of one end connection control bound core of spool.
2. buffer overflow valve according to claim 1, which is characterized in that the damp channel includes being located under buffering valve pocket
The sequentially connected damping hole and the first through flow hole in portion, the damping hole are connected with hydraulic fluid port A, first through flow hole and cushion chamber
Connection.
3. buffer overflow valve according to any one of claim 1 to 2, which is characterized in that the pressure regulating device includes bullet
Property part, the elastic component are connected in the connect base in the swivel nut, and the connect base is connected with adjusting rod, the adjusting
Bar is threadedly coupled with the swivel nut, and the adjusting rod passes through the bottom of the swivel nut to be connected in the connect base, the tune
Locking nut is also socketed with outside pole.
4. buffer overflow valve according to claim 3, which is characterized in that when hydraulic fluid port A oil inlets, fluid is through connecting main valve plug
The first passage of chamber and hydraulic fluid port A enter main valve core cavity and overcome the open-top main valve plug of the active force of elastic component, from hydraulic fluid port B overflows, at this time
The pressure of hydraulic fluid port A is the first stage pressure；The pressure of hydraulic fluid port A enters cushion chamber and buffering valve pocket is pushed to be moved to pressure regulating device direction,
The pressure of hydraulic fluid port A needs to overcome elastic component active force, and hydraulic fluid port A's is stepped up to the second stage pressure.
5. buffer overflow valve according to any one of claim 1 to 4, which is characterized in that the main valve plug is included successively
First end, conical surface portion, cylindrical portion and the second end of connection are equipped with the transition conical surface between the cylindrical portion and the second end
Portion, the diameter of the first end are more than the diameter of main valve core cavity, and the diameter of the cylindrical portion is less than the diameter of main valve core cavity, institute
The diameter for stating the second end is more than the diameter of the cylindrical portion, and the second end is slidably matched with main valve core cavity.
6. buffer overflow valve according to claim 5, which is characterized in that be additionally provided on the first end and adjusted for connecting
The connector of press mechanism, the diameter of the connector are more than the diameter of the first end.
7. the buffer overflow valve according to any one of claim 1 to 6, which is characterized in that it is described buffering valve pocket with it is described
Valve body is equipped with the sealing element for preventing hydraulic fluid port A from being leaked to hydraulic fluid port B and cushion chamber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711440840.XA CN108167253A (en) | 2017-12-27 | 2017-12-27 | Buffer overflow valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711440840.XA CN108167253A (en) | 2017-12-27 | 2017-12-27 | Buffer overflow valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108167253A true CN108167253A (en) | 2018-06-15 |
Family
ID=62521633
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711440840.XA Withdrawn CN108167253A (en) | 2017-12-27 | 2017-12-27 | Buffer overflow valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108167253A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109026887A (en) * | 2018-10-17 | 2018-12-18 | 邵玉刚 | A kind of trimmer valve |
| CN109404358A (en) * | 2018-11-22 | 2019-03-01 | 李军 | A kind of control valve |
| CN110242632A (en) * | 2019-05-27 | 2019-09-17 | 龙工（上海）精工液压有限公司 | Main-control valve of excavating machine secondary relief with filter device |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2234521Y (en) * | 1995-10-14 | 1996-09-04 | 吴昆� | Three-purpose valve |
| EP1001197A1 (en) * | 1998-11-09 | 2000-05-17 | Sun Hydraulics Corporation | Pilot operated pressure valve |
| CN101080593A (en) * | 2004-12-15 | 2007-11-28 | 丰田自动车株式会社 | Pressure regulating valve |
| CN101395417A (en) * | 2006-03-03 | 2009-03-25 | 丰田自动车株式会社 | Regulating valve and fuel cell system |
| CN102235393A (en) * | 2011-08-15 | 2011-11-09 | 宁波广天赛克思液压有限公司 | Buffer relief valve for hydraulic motor |
| CN102943909A (en) * | 2012-10-19 | 2013-02-27 | 华中科技大学 | Differential type water hydraulic relief valve |
| CN203856792U (en) * | 2014-05-26 | 2014-10-01 | 圣邦集团有限公司 | Deflector type shock-absorption relief valve |
| US20140360599A1 (en) * | 2008-09-19 | 2014-12-11 | Isomatic A/S | Fluid regulator |
-
2017
- 2017-12-27 CN CN201711440840.XA patent/CN108167253A/en not_active Withdrawn
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2234521Y (en) * | 1995-10-14 | 1996-09-04 | 吴昆� | Three-purpose valve |
| EP1001197A1 (en) * | 1998-11-09 | 2000-05-17 | Sun Hydraulics Corporation | Pilot operated pressure valve |
| CN101080593A (en) * | 2004-12-15 | 2007-11-28 | 丰田自动车株式会社 | Pressure regulating valve |
| CN101395417A (en) * | 2006-03-03 | 2009-03-25 | 丰田自动车株式会社 | Regulating valve and fuel cell system |
| US20140360599A1 (en) * | 2008-09-19 | 2014-12-11 | Isomatic A/S | Fluid regulator |
| CN102235393A (en) * | 2011-08-15 | 2011-11-09 | 宁波广天赛克思液压有限公司 | Buffer relief valve for hydraulic motor |
| CN102943909A (en) * | 2012-10-19 | 2013-02-27 | 华中科技大学 | Differential type water hydraulic relief valve |
| CN203856792U (en) * | 2014-05-26 | 2014-10-01 | 圣邦集团有限公司 | Deflector type shock-absorption relief valve |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109026887A (en) * | 2018-10-17 | 2018-12-18 | 邵玉刚 | A kind of trimmer valve |
| CN109404358A (en) * | 2018-11-22 | 2019-03-01 | 李军 | A kind of control valve |
| CN109404358B (en) * | 2018-11-22 | 2019-12-06 | 苏州市相城区黄桥工业园经济发展有限公司 | Control valve |
| CN110242632A (en) * | 2019-05-27 | 2019-09-17 | 龙工（上海）精工液压有限公司 | Main-control valve of excavating machine secondary relief with filter device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WW01 | Invention patent application withdrawn after publication | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20180615 |