CN104632747B - A kind of hydraulically balanced valve - Google Patents
A kind of hydraulically balanced valve Download PDFInfo
- Publication number
- CN104632747B CN104632747B CN201510041150.1A CN201510041150A CN104632747B CN 104632747 B CN104632747 B CN 104632747B CN 201510041150 A CN201510041150 A CN 201510041150A CN 104632747 B CN104632747 B CN 104632747B
- Authority
- CN
- China
- Prior art keywords
- valve
- valve core
- interface
- taper
- hydraulic
- 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
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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
- F15B13/04—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with a single servomotor
- F15B13/042—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with a single servomotor operated by fluid pressure
-
- 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
- F15B13/01—Locking-valves or other detent i.e. load-holding devices
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Check Valves (AREA)
Abstract
A kind of hydraulically balanced valve, including valve body, valve body minor diameter one end is connected with hydraulic system, major diameter one end is connected with valve gap, the intracavity constituted at valve body and valve gap is equipped with taper valve core and slinky spring, the two ends of slinky spring withstand on taper valve core and valve gap respectively, it is provided with oil through in the side of taper valve core, one is installed by hard spring in the centre bore of taper valve core, what spherical valve core and ball valve seat connected and composed has the check valve of back pressure effect, spherical valve core, taper valve core, valve body, the axis of valve gap is positioned on an axis, present configuration is simple, volume is little, pipeline junction point is few, it is particularly well-suited to workpiece deadweight and load is little, the occasion that positioning requirements is the highest, have use value height, the feature that Financial cost is low.
Description
Technical field
The present invention relates to hydraulic transmission technology field, particularly to a kind of hydraulically balanced valve.
Background technology
Balanced valve is a kind of hydraulic control component, and its function is: 1. hang at hydraulic actuator
When weight vertical downward movement, prevent hydraulic actuator from hydraulic coupling and loading gravity
Make lifted weight fall suddenly under dual function, damage hydraulic system or weight drops suddenly and makes
Become danger；2. there is the locking function making weight keep optional position in vertical direction；3.
When hydraulic actuator drives weight upward vertical movement, it is ensured that hydraulic actuator can
Smooth weight of smoothly slinging.Existing hydraulically balanced valve is combination valve, conventional combination
Form is: sequence valve+common check valve, choke valve+common check valve, choke valve+commonly single
To valve+hydraulic control one-way valve, air relief valve+overflow valve etc., generally there is structure complexity, volume Pang
The defect such as greatly, pipeline junction point is many.
Summary of the invention
In order to overcome the shortcoming of above-mentioned existing balanced valve, it is an object of the invention to provide one
Hydraulically balanced valve, has the advantages such as simple in construction, volume is little, pipeline junction point is few.
In order to achieve the above object, the technical scheme that the present invention takes is:
A kind of hydraulically balanced valve, including valve body 8, valve body 8 minor diameter one end is pin thread, with
Hydraulic system connects；Major diameter one end is female thread, is connected with valve gap 10, valve body 8 and valve
Being provided with the second sealing ring 9 between lid 10, the intracavity constituted at valve body 8 and valve gap 10 is equipped with cone
Shape spool 5 and slinky spring 7, the two ends of slinky spring 7 withstand on taper valve core 5 and valve gap respectively
On 10, it is provided with oil through 6 in the side of taper valve core 5；Centre bore at taper valve core 5
Interior installation one is connected by hard spring 1, spherical valve core the 2, first sealing ring 3 and ball valve seat 4
Connect the check valve with back pressure effect of composition.
Described spherical valve core 2, taper valve core 5, valve body 8, the axis of valve gap 10 are positioned at one
On bar axis.
The interface being connected with fluid pressure line on described valve body 8 is first interface B1, valve gap
The interface being connected with fluid pressure line on 10 is the second interface B2, when first interface B1 passes through
Reversal valve 12 is connected with hydraulic pump 11, when the second interface B2 is connected with hydraulic cylinder 14,
Hydraulically balanced valve plays the effect of common check valve, it is ensured that hydraulic oil enters hydraulic cylinder 14, hydraulic pressure
The weight 15 being attached thereto is risen by cylinder 14；When first interface B1 by reversal valve 12 with
Hydraulic oil container 16 is connected, and the second interface B2 is connected with hydraulic cylinder 14, if hydraulic oil-returning
Pressure can not back down spherical valve core 2, then hydraulic oil is enclosed, and hydraulic cylinder 14 is by weight 15
It is maintained at a certain position；When hydraulic pressure be enough to back down spherical valve core 2, hydraulic oil passes through
Ball valve flows to hydraulic oil container 16 from first interface B1 again, and hydraulic cylinder 14 is under the prevention of back pressure
Weight 15 is driven the most slowly to decline.
Advantages of the present invention: simple in construction, volume are little, pipeline junction point is few, particularly suitable
In the occasion that workpiece is conducted oneself with dignity and load is little, positioning requirements is the highest, have use value
The feature high, Financial cost is low.
Accompanying drawing explanation
Fig. 1 is the structural representation of the present invention.
Fig. 2 is that the present invention is connected with hydraulic actuator (hydraulic cylinder) and other Hydraulic Elements
Application schematic diagram.
Detailed description of the invention
Below in conjunction with the accompanying drawings the present invention is described in detail.
With reference to Fig. 1, a kind of hydraulically balanced valve, including valve body 8, valve body 8 minor diameter one end is
Pin thread, is connected with hydraulic system；Major diameter one end is female thread, is connected with valve gap 10,
Being provided with the second sealing ring 9 between valve body 8 and valve gap 10, the second sealing ring 9 is by balanced valve
The fluid in portion seals；The intracavity constituted at valve body 8 and valve gap 10 is equipped with taper valve core 5
With slinky spring 7, the two ends of slinky spring 7 withstand on taper valve core 5 and valve gap 10 respectively,
The side of taper valve core 5 is provided with oil through 6；One is installed in the centre bore of taper valve core 5
The tool connected and composed by hard spring 1, spherical valve core the 2, first sealing ring 3 and ball valve seat 4
There is the check valve of back pressure effect.
Described spherical valve core 2, taper valve core 5, valve body 8, the axis of valve gap 10 are positioned at one
On bar axis.
With reference to Fig. 2, the interface that described valve body 8 is connected with fluid pressure line is first interface
B1, the interface that valve gap 10 is connected with fluid pressure line is the second interface B2, works as first interface
B1 is connected with hydraulic pump 11 by reversal valve 12, the second interface B2 and hydraulic cylinder 14 phase
Connecting, hydraulically balanced valve plays the effect of common check valve, it is ensured that hydraulic oil enters hydraulic cylinder 14,
The weight 15 being attached thereto is risen by hydraulic cylinder 14；When first interface B1 is by reversal valve 12
Being connected with hydraulic oil container 16, the second interface B2 is connected with hydraulic cylinder 14, if hydraulic pressure returns
Oil pressure can not back down spherical valve core 2, then hydraulic oil is enclosed, and hydraulic cylinder 14 is by weight 15
It is maintained at a certain position；When hydraulic pressure be enough to back down spherical valve core 2, hydraulic oil passes through
Ball valve flows to hydraulic oil container 16 from first interface B1 again, and hydraulic cylinder 14 is under the prevention of back pressure
Weight 15 is driven the most slowly to decline.
The operation principle of the present invention is:
Along common check valve forward flow: fluid enters from first interface B1, overcomes slinky spring
The elastic force of 7, backs down taper valve core 5, enters chamber between taper valve core 5 and valve body 8, so
Afterwards by oil through 6, flow out from the second interface B2, owing to slinky spring 7 rigidity is the lowest, and
The active area of taper valve core 5 is big, so, pressure during fluid common check valve forward flow
Lose little.
Play counterbalance valve and produce damping: fluid enters from the second interface B2, one side and slinky spring
7 act on jointly, are closed by taper valve core 5, on the other hand, need to overcome the bullet of hard spring 1
Power, backs down spherical valve core 2, flows back to hydraulic oil container from first interface B1 by reversal valve 12
16, when oil liquid pressure is less than the unlatching pressure of ball valve, fluid is enclosed and can not pass through ball valve；
When oil liquid pressure is more than the unlatching pressure of ball valve, fluid could pass through ball valve from first interface
B1 flows back to hydraulic oil container 16 through reversal valve 12, it is ensured that the weight 15 being suspended on hydraulic cylinder 14
Steadily being lowered without dropping suddenly, owing to the rigidity of hard spring 1 is big, spherical valve core 2 is made
Little with area, it is possible to produce bigger back pressure, make hydraulic cylinder 14 flat with weight 15
Decline quietly.
Claims (2)
1. a hydraulically balanced valve, including valve body (8), it is characterised in that: valve body (8)
Minor diameter one end is pin thread, is connected with hydraulic system；Major diameter one end is female thread, with
Valve gap (10) connects, and is provided with the second sealing ring (9) between valve body (8) and valve gap (10),
The intracavity constituted at valve body (8) and valve gap (10) is equipped with taper valve core (5) and slinky spring
(7), the two ends of slinky spring (7) withstand on taper valve core (5) and valve gap (10) respectively,
It is provided with oil through (6) in the side of taper valve core (5)；Center in taper valve core (5)
In hole install one by hard spring (1), spherical valve core (2), the first sealing ring (3) and
The check valve with back pressure effect that ball valve seat (4) connects and composes；
The upper interface being connected with fluid pressure line of described valve body (8) is first interface (B1),
The upper interface being connected with fluid pressure line of valve gap (10) is the second interface (B2), when first connects
Mouth (B1) is connected with hydraulic pump (11) by reversal valve (12), the second interface (B2)
When being connected with hydraulic cylinder (14), hydraulically balanced valve plays the effect of common check valve, it is ensured that
Hydraulic oil enters hydraulic cylinder (14), and the weight (15) being attached thereto is risen by hydraulic cylinder (14)
Rise；When first interface (B1) is connected with hydraulic oil container (16) by reversal valve (12),
When second interface (B2) is connected with hydraulic cylinder (14), if hydraulic oil-returning pressure can not
Back down spherical valve core (2), then hydraulic oil is enclosed, and hydraulic cylinder (14) is by weight (15)
It is maintained at a certain position；When hydraulic pressure be enough to back down spherical valve core (2), hydraulic oil warp
Cross ball valve and flow to hydraulic oil container (16) from first interface (B1) by reversal valve (12) again,
Hydraulic cylinder (14) drives weight (15) the most slowly to decline under the prevention of back pressure.
A kind of hydraulically balanced valve the most according to claim 1, it is characterised in that: described
Spherical valve core (2), taper valve core (5), valve body (8), the axis position of valve gap (10)
On an axis.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510041150.1A CN104632747B (en) | 2015-01-27 | 2015-01-27 | A kind of hydraulically balanced valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510041150.1A CN104632747B (en) | 2015-01-27 | 2015-01-27 | A kind of hydraulically balanced valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104632747A CN104632747A (en) | 2015-05-20 |
| CN104632747B true CN104632747B (en) | 2016-10-05 |
Family
ID=53211858
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510041150.1A Expired - Fee Related CN104632747B (en) | 2015-01-27 | 2015-01-27 | A kind of hydraulically balanced valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104632747B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108361235B (en) * | 2018-04-24 | 2023-09-08 | 山河智能装备股份有限公司 | Compact hydraulic control back pressure valve and control method thereof |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4123718A1 (en) * | 1991-07-17 | 1993-01-21 | Ford New Holland Gmbh | HYDRAULIC SHUT-OFF VALVE |
| CN2641411Y (en) * | 2003-08-19 | 2004-09-15 | 查谦 | Back pressure balancing type small pressure valve |
| CN201347913Y (en) * | 2008-12-25 | 2009-11-18 | 亨特尔(天津)科技开发有限公司 | Novel cushion cylinder loop |
| CN201539458U (en) * | 2009-08-31 | 2010-08-04 | 南京乔丰汽车工装技术开发有限公司 | Hydraulic pressure one-way control valve |
| CN202176567U (en) * | 2011-08-17 | 2012-03-28 | 浙江圣邦机械有限公司 | Balance valve |
| CN102990885A (en) * | 2011-09-09 | 2013-03-27 | 鸿富锦精密工业（深圳）有限公司 | Hydraulic control system |
-
2015
- 2015-01-27 CN CN201510041150.1A patent/CN104632747B/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN104632747A (en) | 2015-05-20 |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20161005 Termination date: 20190127 |
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| CF01 | Termination of patent right due to non-payment of annual fee |