CN107795539A - Novel load sensitive balance valve - Google Patents
Novel load sensitive balance valve Download PDFInfo
- Publication number
- CN107795539A CN107795539A CN201610747120.7A CN201610747120A CN107795539A CN 107795539 A CN107795539 A CN 107795539A CN 201610747120 A CN201610747120 A CN 201610747120A CN 107795539 A CN107795539 A CN 107795539A
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- Prior art keywords
- valve
- load
- balance valve
- change
- novel
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Classifications
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- 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
- F15B13/0426—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with a single servomotor operated by fluid pressure with fluid-operated pilot valves, i.e. multiple stage valves
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Safety Valves (AREA)
Abstract
A kind of novel load sensitive balance valve, it is made up of valve body, control piston, main balance valve core and pilot valve spring etc..Novel balance valve is mainly made up of the throttling valve core component of one-way function component, relief function component and a main flow control action；Balanced valve end cap keeps apart load cavity and spring cavity, and when damping hole is blocked by small pilot valve, the active area that the high pressure in load cavity is acted on the right side of main balance valve core greatly reduces, and forms feedback signal；Carrying the active force acted on balance valve core can change with the change of load, so as to change balanced valve area of passage, maintain stability of flow, it is ensured that arm support stable movement；By fluid flow direction, when balancing before valve position hydraulic cylinder, fluid enters from oil inlet, small from outflow, the pressure loss through check valve runner in valve body.
Description
Art
The present invention relates to a kind of novel load sensitive balance valve, it is applied especially in electronic product.
Background technology
With the deep application of information technology, industry transition, Urbanization Construction quickly propel and assembling manufacturing industry
The very near and mankind of from size to strength are to benthos, deeply the formed market demand of land depths exploitation, fluid dynamic production
Industry is developed rapidly about ten years recently.According to China's liquid airtight TIA statistics, 2011 pneumatic, fluid power, hydraulic pressure, close
The sealing industry gross output value increased 11.85 times than 2000, and Hydraulic Industry increases 11.3 times.2013, China's fluid moved
The market share that power industry accounts for the whole world is significantly lifted, and wherein up to 27%, pneumatic market occupies the whole world second up to 26% in hydraulic pressure market
Position；The export amount of hydraulic part is increased 700,000,000 dollars in 2013 by 2.7 hundred million dollars in 2009, and import volume is by highest year
34.24 hundred million dollars of be reduced to 2013 20.12 hundred million dollars of part.Above-mentioned data all show China's hydraulic part industry just fast
Speed emerges, and its development prospect is wide, and in coming few decades, China's fluid dynamic industry will be in the development key phase, will welcome all
More opportunities, it will continue to keep increasing on a fairly large scale.
To meet growing industry development requirement, its development need follows certain direction, and it is necessary to have directiveness
Strategy.Chinese Mechanical Engineering Society writes within 2011《China Mechanical Engineering Technology Roadmap》, deep elaborates machinery
The state of the art of engineering every field, direction is specified for the development of mechanical engineering technology.The development of China's fluid dynamic industry
Direction will closely follow mechanical development, be unable to do without " green ", " intelligence ", " extraordinary ", " fusion ", " service ".More clearly,
China's Hydraulic Elements and system will be towards for high life, highly reliable, easy care, high efficiency, high-intelligentization and electromechanical integration, height
Power-weight ratio, highly integrated, safety are continually striving to environment-friendly direction.
The content of the invention
In order to overcome existing load-sensitive balanced valve sealing property poor, the problem of leakage rate is larger during work, this hair
Bright to provide a kind of novel load sensitive balance valve, the type novel load sensitive balance valve has good sealing property, improved
Valve seal performance；Stability of flow simultaneously, it is ensured that arm support stable movement.
The technical solution adopted for the present invention to solve the technical problems is：The balanced valve is by valve body, guide piston, main balance
The parts and components such as valve element, small pilot valve, overflow valve element form.Balanced valve end cap keeps apart load cavity and spring cavity, works as damping
When aperture is blocked by small pilot valve, the active area that the high pressure in load cavity is acted on the right side of main balance valve core greatly reduces, and makes
Obtain the active area that load cavity c is acted at left and right sides of balance valve core and only exist very little difference, being multiplied by high-voltage load can obtain
Load effect is in the active force of balance valve core, as feedback signal.
Carrying the active force acted on balance valve core can change with the change of load, so as to change balanced valve flow-passing surface
Product, maintain stability of flow, it is ensured that arm support stable movement；Novel balance valve mainly by one-way function component, relief function component and
Play the throttling valve core component composition of main flow control action；By fluid flow direction, when balancing before valve position hydraulic cylinder, oil
Liquid enters from oil inlet, minimum from outflow, the pressure loss through check valve runner in valve body.
The beneficial effects of the invention are as follows：The New-type safety valve has preferable sealing effectiveness, and the type novel load is sensitive flat
Weighing apparatus valve has good sealing property, improves valve seal performance；Stability of flow simultaneously, it is ensured that arm support stable movement；Pressure
Power loss is minimum, and back pressure is adapted with load, and load movement is steady.
Brief description of the drawings
The present invention is further described with reference to the accompanying drawings and examples.
Fig. 1 is novel load sensitive balance valve schematic diagram of the function.
Fig. 2 is novel load balanced valve part-structure schematic diagram.
In Fig. 2, the main valve plug of the 1. valve bodies 2. control main 4. pilot valve spring of balance valve core of piston 3., 5. spring base 6.
The overflow valve spring of 7. end cap of spring, 8. overflow valve element 9..
Embodiment
Preferably, as shown in figure 1, A is the oil inlet of forward path, B is the load port being connected with hydraulic cylinder, and Pil is first
Mouth is led, T is outer drain tap, and M is pressure tap.Conventional balanced valve is different from, load signal is introduced balance valve spring by the balanced valve
Place side, feedback force collective effect caused by elastic force caused by spring and load signal are put down in valve element side and pilot control power
Weighing apparatus, adjustment valve flow area, so that back pressure is adapted with load, proof load stable movement.
Preferably, as shown in Fig. 2 the balanced valve is by valve body 1, guide piston 2, main balance valve core 3, small pilot valve
4th, the parts and components such as overflow valve element 8 form.Balanced valve end cap 7 keeps apart load cavity c and spring cavity e, small when damping
When hole n is blocked by small pilot valve, the active area that the high pressure in load cavity c is acted on the right side of main balance valve core subtracts significantly
It is small so that the active area that load cavity c is acted at left and right sides of balance valve core only exists very little difference, and being multiplied by high-voltage load can
To obtain load effect in the active force of balance valve core, as feedback signal.
Preferably, novel balance valve mainly by one-way function component, relief function component and main flow control action
Throttling valve core component composition.
Preferably, by fluid flow direction, when balancing before valve position hydraulic cylinder, fluid enters from hydraulic fluid port V, through in valve body
Check valve runner flows out from C mouths, and the pressure loss is minimum；When balancing valve position behind hydraulic cylinder, main balanced valve is then in guide
Maximum is pushed under the high control pressure effect of valve to the right, main balance valve core area of passage reaches maximum, in big through-flow
State, fluid flow out from C mouths through maximum slotted density to v mouths.
Preferably, by fluid flow direction, when balancing before valve position hydraulic cylinder, fluid enters from hydraulic fluid port V, through in valve body
Check valve runner flows out from C mouths, and pressure loss pain is minimum.To the balanced valve behind hydraulic cylinder, small pilot valve is being controlled
Opened under the thrust of piston processed, so as to block damping hole n, lay down spring cavity e mesohighs.After high pressure is laid down, balanced valve
Opening pressure drastically reduces.Opened under the reasoning effect of control piston.Fluid flows to V mouths from C mouths, and main balance core is first in left side
Balance is kept under the collective effect of load force caused by the main balanced valve spring force of the thrust of guide piston and right side and load signal.
Wherein active force of the load effect on balance valve core can change with the change of load, so as to change balanced valve flow-passing surface
Product, maintain stability of flow, it is ensured that arm support stable movement.
Preferably, now, no matter balanced valve is in hydraulic cylinder upstream or downstream.Its pilot control pressure is zero, and forward direction leads to
Road is turned off with backward channel, and damping hole n connects load cavity c with spring cavity e.It is equal with load that c chambers and e chambers form high pressure
Weighing apparatus.The high pressure acts on and all areas in main balance valve core right side, and main balance valve core structure and small pilot valve structure are cone
Valve type, under load high pressure effect, almost do not reveal.
Claims (5)
1. a kind of novel load sensitive balance valve, it is made up of valve body, control piston, main balance valve core and pilot valve spring etc.,
It is characterized in that：Including throttling valve core component；Balanced valve end cap keeps apart load cavity and spring cavity；Load is acted on balance valve core
Active force can change with the change of load；Fluid enters from oil inlet, through check valve runner in valve body from outflow.
2. novel load sensitive balance valve according to claim 1, it is characterized in that：Novel balance valve is mainly by one-way function
Component, relief function component and the throttling valve core component composition for playing main flow control action.
3. novel load sensitive balance valve according to claim 1, it is characterized in that：Balanced valve end cap is by load cavity and spring
Chamber is kept apart, when damping hole is blocked by small pilot valve, effect that the high pressure in load cavity is acted on the right side of main balance valve core
Area greatly reduces, and forms feedback signal.
4. novel load sensitive balance valve according to claim 1, it is characterized in that：Carry the effect acted on balance valve core
Power can change with the change of load, so as to change balanced valve area of passage, maintain stability of flow, it is ensured that arm support motion is flat
Surely.
5. novel load sensitive balance valve according to claim 1, it is characterized in that：By fluid flow direction, work as balanced valve
When before the hydraulic cylinder of position, fluid enters from oil inlet, minimum from outflow, the pressure loss through check valve runner in valve body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610747120.7A CN107795539A (en) | 2016-08-30 | 2016-08-30 | Novel load sensitive balance valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610747120.7A CN107795539A (en) | 2016-08-30 | 2016-08-30 | Novel load sensitive balance valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107795539A true CN107795539A (en) | 2018-03-13 |
Family
ID=61528919
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610747120.7A Pending CN107795539A (en) | 2016-08-30 | 2016-08-30 | Novel load sensitive balance valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107795539A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110671379A (en) * | 2019-08-23 | 2020-01-10 | 宁波江北宇洲液压设备厂 | Flow control type hoist balance valve |
| CN115405576A (en) * | 2022-10-31 | 2022-11-29 | 索特传动设备有限公司 | Variable differential pressure valve, load sensitive hydraulic system and engineering machinery |
-
2016
- 2016-08-30 CN CN201610747120.7A patent/CN107795539A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110671379A (en) * | 2019-08-23 | 2020-01-10 | 宁波江北宇洲液压设备厂 | Flow control type hoist balance valve |
| CN115405576A (en) * | 2022-10-31 | 2022-11-29 | 索特传动设备有限公司 | Variable differential pressure valve, load sensitive hydraulic system and engineering machinery |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20180313 |
|
| WD01 | Invention patent application deemed withdrawn after publication |