CN101846110B - Full-balanced control valve - Google Patents
Full-balanced control valve Download PDFInfo
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- CN101846110B CN101846110B CN 201010178412 CN201010178412A CN101846110B CN 101846110 B CN101846110 B CN 101846110B CN 201010178412 CN201010178412 CN 201010178412 CN 201010178412 A CN201010178412 A CN 201010178412A CN 101846110 B CN101846110 B CN 101846110B
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Abstract
The invention provides a full-balanced control valve comprising an air path block and a balanced valve body, wherein a storage cavity and a communication path are arranged in the air path block; the balanced valve body is provided with a balanced cavity, an input cavity, an output cavity and a reversing cavity; each cavity is respectively and correspondingly provided with a balanced valve core, an input valve core, an output valve core and a reversing valve core; the input cavity is communicated with an external input control fluid assembly, and the output cavity is communicated with the external input control fluid assembly and an external fluid recovery assembly; the reversing valve is communicated with the external fluid recovery assembly; the storage cavity can seal fluid which is isobaric with the fluid in the external control body; the storage cavity and the fluid in the external control body respectively act on two ends of the balanced valve core; the variation of the pressure of the fluid in the external control body can push the balanced valve core to move so as to change the volume of the fluid in the external control body. The invention has simple structure and easy control and maintenance.
Description
Technical field
The present invention relates to a kind of mechanical device, be specifically related to a kind ofly can be used for that air-balance hangs or the full-balanced control valve of mechanism hand.
Background technique
Full-balanced control valve is mainly used in hanging such as air-balance in the various occasions, pneumatic motor, assist transportation occasions such as power-assisted mechanism hand.In addition, also can be applicable to other field, such as after needs are with some oil hydraulic cylinders or cylinder load, being easy to be parked in the arbitrary position.
At present in the air-balance field; The controls of using air vent valve to accomplish gas pressure more; Its principle is to change its delivery pressure through handle with sleeve; It can not the perception load force variation and automatic pressure regulation, therefore to the variation of the automatic perception load force of needs and self-regulating balace weight is undesirable.At this moment, need to use air vent valve gentle move to connect to the loop realize the variation of pressure, obvious its complex structure, cost is higher.
Also have a kind of electricity-gas Proportional valve in addition, then pass through the variation of sensor senses load force, and regulate the pressure of air pressure valve, obviously its shortcoming is that the complex structure cost is high equally.
Existing full Balance Control mode control loop more complicated, components and parts are many, are unfavorable for safeguarding; Price is higher; Because control piece is many by the delivery pipe series connection, Security is not high.
Summary of the invention
To above-mentioned defective, the purpose of this invention is to provide a kind of full-balanced control valve, to solve the relatively poor and cost problem of higher of control valve complex structure, Safety performance of existing technology.
For realizing above-mentioned purpose, the present invention has adopted following technological scheme:
A kind of full-balanced control valve; Comprise: an air passage block and the balance valve body that can connect as one with this air passage block; Wherein: but be provided with the storing cavity of store fluid and the communication passage that can communicate in this air passage block with the external control body, and this storing cavity does not communicate with this communication passage in this air passage block; This balance valve body is provided with counter balance pocket, input cavity, output cavity and switching-over chamber; In each cavity respectively correspondence balance valve core, input spool, output spool and changeover valve core are set; Those spools and respective chamber sealing, and can be in each self-corresponding cavity intrinsic pressure control lower slider; This input cavity is communicated with external fluid input control unit; This output cavity is communicated with external fluid output control unit and external fluid reclaims assembly; This switching-over chamber is communicated with external fluid switching-over control unit; This counter balance pocket and output cavity through first passage be connected, this input cavity is connected through second channel with the switching-over chamber, this switching-over chamber is connected through third channel with this counter balance pocket, and this second channel passes through inlet opening connection external source of fluid; This counter balance pocket, output cavity and input cavity are communicated with the communication passage that communicates with the external control body of this air passage block, and wherein said counter balance pocket is provided with the 4th opening and the 5th opening, the communication passage of the 4th opening and the 5th this air passage block of open communication; Said output cavity is provided with second opening, this communication passage of this second open communication air passage block; This input cavity is provided with the 6th opening, the communication passage of the 6th this air passage block of open communication; This counter balance pocket is communicated with this storing cavity with this input cavity; Wherein said counter balance pocket is communicated with in the following manner with storing cavity with input cavity and realizes: said counter balance pocket is provided with the 3rd opening; Said input cavity is provided with first opening, communicates and the position is tightly connected corresponding to the opening of first opening and the 3rd opening in storing cavity respectively with on being arranged on air passage block.
According to the described full-balanced control valve of preferred embodiment of the present invention, said storing cavity equates in order to realize fluid pressure and the fluid pressure in the external control body that its inner sealing stores.
According to the described full-balanced control valve of preferred embodiment of the present invention; Respectively there is a precision spring at the two ends of said balance valve core; The intermediate section of said counter balance pocket and communicate with the external control body together with passage, and the intermediate section of balance valve core and isolate with the sealed at both ends of said balance valve core through said.
According to the described full-balanced control valve of preferred embodiment of the present invention; The variation of one end perception external control body fluid pressure of said balance valve core; When hydrodynamic pressure is asymmetric; Orientable motion makes counter balance pocket intermediate section and external source of fluid or external fluid reclaim assembly and is communicated with, and the control volume inner fluid is increased or minimizing.
According to the described full-balanced control valve of preferred embodiment of the present invention, when external control body fluid pressure was replied initial value, when said balance valve core two ends hydrodynamic pressure equated again, said balance valve core recovered initial bit, and control volume inner fluid capacity no longer changes.
According to the described full-balanced control valve of preferred embodiment of the present invention, said balance valve core, input spool, output spool and changeover valve core respectively keep initial position through spring.
According to the described full-balanced control valve of preferred embodiment of the present invention, four seal rings are set on the said balance valve core, the cavity wall of those seal rings and counter balance pocket is fitted and is sealed, and can follow balance valve core and in the balance cavity, slide.
According to the described full-balanced control valve of preferred embodiment of the present invention, said changeover valve core is provided with two seal rings, and those seal rings are fitted with the cavity wall in switching-over chamber and sealed, and can follow changeover valve core and in the switching-over chamber, slide.
According to the described full-balanced control valve of preferred embodiment of the present invention, said output spool is provided with three seal rings, and the cavity wall of those seal rings and output cavity is fitted and sealed, and can follow the output spool and in the switching-over chamber, slide.
According to the described full-balanced control valve of preferred embodiment of the present invention, said input spool is provided with four seal rings, and the cavity wall of those seal rings and input cavity is fitted and sealed, and can follow the input spool and in the switching-over chamber, slide.
Owing to adopted above technological scheme, made the present invention have following advantage and good effect than existing technology:
The first, the present invention need not only through structure exquisite in the balance valve body, can realize the effect of balance through complicated controlling parts, and is simple in structure;
The second, the present invention can protect the sudden change of external control body inner fluid, and does not have the pipe fitting connection basically, thereby Safety performance is higher, and maintainability is stronger.
Description of drawings
Fig. 1 is a upward angle of visibility structural representation of full-balanced control valve of the present invention;
Fig. 2 is the downwards angle of visibility structural representation of full-balanced control valve of the present invention;
Fig. 3 A is the section plan of balance valve body of the present invention;
Fig. 3 B is the section plan of air passage block of the present invention;
Fig. 4 is the sectional view of balance valve body of the present invention under manual input state;
Fig. 5 is the sectional view of balance valve body of the present invention under manual output state;
Fig. 6 is the sectional view of balance valve body of the present invention under automatic input state;
Fig. 7 is the sectional view of balance valve body of the present invention under automatic output state.
Embodiment
Below in conjunction with accompanying drawing several preferred embodiments of the present invention is described in detail, but the present invention is not restricted to these embodiments.The present invention contain any on marrow of the present invention and scope, make substitute, modification, equivalent method and scheme.Understand for the public is had completely the present invention, in the following preferred embodiment of the present invention, specified concrete details, and do not had the description of these details also can understand the present invention fully for a person skilled in the art.
Principle of the present invention is: full-balanced control valve is provided; Comprise output spool, input spool, changeover valve core, balance valve core etc.; Four spool sizeds are not placed in the corresponding cavity, and spool and respective cavities are sealed by seal ring, the direction of flow of each each cavity of spool may command.The input spool can be input to the external fluid source fluid in the external control body, and is kept in the storing cavity in the full-balanced control valve; The output spool can output to the outside with the fluid in the external control body; Changeover valve core can make the input spool ineffective the input fluid isolation; Balance valve core can be controlled inputing or outputing of fluid external portion control volume through the variation of hydrodynamic pressure in the external control body.Input spool, output spool, changeover valve core are realized switching-over by seal ring and corresponding cavity sealing through spring and exterior fluid pressure; Balance is realized by spring and storage cavity hydrodynamic pressure and external control body fluid pressure in the balance valve core two ends.
Input cavity all has port with switching-over chamber, input cavity and storing cavity, switching-over chamber and counter balance pocket, output cavity and control volume, output cavity and external module.When changeover valve core does not receive exterior fluid pressure, input cavity and counter balance pocket sealing, when the input spool received the exterior fluid pressure action, input cavity and control volume, storing cavity were communicated with, fluid entering control volume and storing cavity; The output spool receives the exterior fluid pressure effect, and output cavity and control volume, output external module are communicated with, and the interior fluid of control volume this moment can flow in the external module, is manual state of equilibrium this moment.Manual state down can be used for controlling the fluid displacement in the external control body to the pressure of input and output spool through external fluid.
Do the time spent when changeover valve core receives exterior fluid pressure, input cavity and counter balance pocket are communicated with, and by balance valve core sealed between external source of fluid and external control body this moment, and when balance valve core moved towards a certain direction, the external fluid source fluid just can get in the control volume; External fluid reclaimed assembly and was sealed by balance valve core with the external control body this moment, when balance valve core when other direction moves, fluid can flow out in the external fluid recovery assembly in the external control body.And the direction of action of balance valve core is decided by the active force that is attached on the external control body.Active force reduces on the external control body, and the control volume internal volume increases, and external control body fluid pressure reduces; The pressure that acts on the balance valve core end just reduces, and the other end, balance valve core receives fluid pressure action in the storing cavity; And fluid remains constantly in the storing cavity, that is: balance valve core is greater than the pressure of external control body end at the pressure of storing cavity end, and control volume moves towards outside control volume connecting port side; External control body and external source of fluid are communicated with, and fluid flow into the external control body from fluid source, and hydrodynamic pressure is identical in external control body and storing cavity; Balance valve core resets, and fluid source and external control body break off.When active force on the external control body increased, external control body internal volume reduced, and external control body fluid pressure increases; The pressure that acts on the balance valve core end just increases, and that balance valve core remains at the pressure of storing cavity end is constant, that is: balance valve core is less than the pressure of external control body end at the pressure of storing cavity end; Balance valve core is towards the storing cavity end motion; External control body and external fluid reclaim assembly and are communicated with, and fluid flows out from control volume, and hydrodynamic pressure is identical up to two ends; Balance valve core resets, and external module and control volume break off.Be the automated manner state this moment.Under the auto state, the user needn't control input again, the output spool is controlled the fluid displacement in the external control body.The user only needs annex is very little on the active force of control volume the power capacity with regard to may command body inner fluid.
Please refer to Fig. 1, Fig. 2, Fig. 3 A and Fig. 3 B; Full-balanced control valve in an embodiment of the present invention comprises balance valve body 10 and air passage block 20; Balance valve body 10 is provided with counter balance pocket 23, switching-over chamber 24, input cavity 21 and output cavity 22, is respectively arranged with balance valve core 12, changeover valve core 15, input spool 14 and output spool 13 in it, is respectively arranged with the seal ring that number does not wait on it; The cavity wall sealing corresponding with each, each spool can slide in the cavity of correspondence.
But be provided with the storing cavity 201 of store fluid and the communication passage 202 that can communicate in the air passage block 20, and this storing cavity 201 does not communicate with communication passage 202 in this air passage block 20 with the external control body.
This input cavity 21 is communicated with external fluid input control unit through inlet 32; This output cavity 22 is communicated with through opening 32 and connects external fluid output control unit; Connect external fluid through opening 33 and reclaim assembly; This switching-over chamber 24 is communicated with outside switching-over control fluid assembly through opening 34; This counter balance pocket 23 and output cavity 22 through first passage 51 be connected, this input cavity 21 is connected through second channel 52 with switching-over chamber 24, this switching-over chamber 24 is connected through third channel 53 with this counter balance pocket 23, and this second channel 52 passes through an inlet opening 35 connection external source of fluid; This counter balance pocket 23, output cavity 22 and input cavity 21 are communicated with the communication passage 202 that communicates with the external control body of this air passage block 20, and this counter balance pocket 23 is communicated with this storing cavity 201 with this input cavity 21.
Its concrete mode is following; Said counter balance pocket 23 is provided with the 3rd opening 43; Said input cavity 21 is provided with first opening 41, communicates and the position is tightly connected corresponding to opening of first opening 41 and the 3rd opening 43 411 and opening 431 in storing cavity 201 respectively with on being arranged on air passage block 20; Counter balance pocket is provided with the communication passage 202 that the 4th opening 44 and the 5th opening 45, the four openings 44 and the 5th opening 45 are communicated with this air passage block 20, and the opening 441 on the corresponding respectively air passage block is tightly connected with opening 451; Output cavity 22 is provided with second opening 42, and this second opening 42 is through being communicated with this communication passage 202 of air passage block 20 with its opening that is tightly connected 421; Through be communicated with the communication passage 202 of this air passage block with its opening that is tightly connected 461, communication passage can connect for example cylinder of outside control volume to this input cavity 21 through one the 6th opening 46.
Each spool and cavity adopt the seal ring sealing, and end has pressure spring to keep initial bit separately, and opening 71,72,73 and 74 can seal with plug, opens in case of necessity again.
Below in conjunction with description of drawings concrete application process of the present invention:
Please refer to Fig. 4, describe the process of full equilibrium valve fluid input now in detail, fluid is input in the external control body and under full equilibrium valve manual state, realizes.Opening 34 no external fluid inputs this moment, this moment, changeover valve core 15 was in initial bit, i.e. shown position.The input control unit does not act on when the outside; When no fluid is imported; One end of input spool 14 is because spring pressure makes input spool 14 remain on initial bit; Make epicoele 62 and 63 sections isolation of cavity of resorption in inlet flow body source and the input cavity 21, promptly the fluid source fluid can't get into the epicoele 62 and cavity of resorption 63 of input cavity 21 this moment.The input control unit is input to opening 31 with fluid when the outside; The force input spool 14 upwards actions that fluid produces; Make the fluid source fluid can enter into the epicoele 62 and cavity of resorption 63 of input cavity simultaneously; And epicoele 62 communicates through communication passage 202 and external control body, and cavity of resorption 63 communicates with storing cavity 201, and then this moment, the fluid source fluid got in external control body and the storing cavity 201.Input is after control unit stops the pressure effect of fluid to input cavity 21, input spool 14 owing to receive spring do in reset.Fluid source and epicoele 62 and cavity of resorption 63 are isolated, and fluid is sealed in separately in external control body and the storing cavity 201.And in the external control body in fluid pressure and the storing cavity 201 fluid pressure equate, accomplish the fluid source input.
Please refer to Fig. 5, describe the process that realizes full equilibrium valve fluid output under the full equilibrium valve manual state now in detail.That is, opening 34 no external fluid inputs, this moment, selector valve 15 was in initial bit, i.e. shown position.The output control unit does not act on when the outside; During the input of no fluid, output spool 13 1 ends are because spring pressure makes input spool 13 remain on initial bit, and second opening 42 communicates with output cavity 22; Second opening 42 is communicated with through communication passage 202 and external control body; Be that the external control body communicates with output cavity 22, opening 33 connects the external fluid receive element, and promptly this moment, external control body and external fluid receive element were isolated.Fluid can not flow out to external fluid and reclaim assembly in the control volume.The output control unit is input to opening 32 with fluid when the outside, and the force output spool 13 that fluid produces makes progress and moves, and output cavity 22 is communicated with opening 33, and fluid flows out to opening 33 from second opening 42 and reclaimed the assembly reception by external fluid in the external control body.Be that fluid displacement reduces in the external control body.Output control unit stop fluid to output spool 13 the pressure effect after, output spool 13 owing to receive spring do in reset.The opening 33 and second opening 42 are isolated, and accomplish fluid output in the control volume.
Please refer to Fig. 6, describe full equilibrium valve is realized the fluid input under the selector valve auto state process now in detail.Be that opening 34 has the external fluid input, selector valve 12 moves at this moment, i.e. shown positions.This moment, second channel 52 communicated with third channel 53, and promptly third channel 53 communicates with fluid source.The 4th opening 44 communicates with the external control body, and the 3rd opening 43 communicates with storing cavity 201, and when control volume load active force is constant, during no applied external force, the suffered hydrodynamic pressure in the two ends of balance valve core 12 is equal.Promptly this moment, balance valve core 12 was in state of equilibrium; Under state of equilibrium; The segmentation 61 and the third channel 53 of counter balance pocket 23 isolated by balance valve core 12; The segmentation 61 of counter balance pocket 23 and the 5th opening 45 communicate, and the 5th opening 45 communicates with control volume, and promptly this moment, the fluid source fluid can not flow in the external control body.First passage 51 communicates with opening 33, and under state of equilibrium, the 5th opening 45 is isolated with first passage 51, and promptly fluid can not flow out from opening 33 in the control volume.When control volume load active force reduces; External control body fluid pressure reduces; Promptly the hydrodynamic pressure of the 4th opening 44 ends reduces, and storing cavity 201 fluid pressures are constant, and this moment, balance valve core 12 was at the pressure of the 4th open pore 44 ends pressure less than the 3rd opening 43 ends; Balance valve core 12 is to the direction motion of the 4th opening 44 ends, and the segmentation 61 of counter balance pocket 23 is communicated with third channel 53.And the segmentation 61 of counter balance pocket 23 and the 6th opening 46 are communicated with; The 6th opening 46 is communicated with the external control body; Be that third channel 53 is communicated with the external control body, changeover valve core 15 is under the auto state, and promptly second channel 52 is communicated with third channel 53; Be that fluid source and external control body are communicated with, the fluid source fluid flow in the external control body.When control volume load active force reduces, owing to external control body self character, the external control body bulk increases, the reduction of external control body fluid pressure, and promptly external control body fluid pressure is the same with the preceding control volume internal pressure of fluid input.Then the external control body fluid force and the storing cavity 201 that act on balance valve core 12 from the 4th opening 44 is in equivalent state again from the hydrodynamic pressure of the 3rd opening 43 ends; Balance valve core 12 resets; Segmentation 61 isolating seals of third channel 53 and counter balance pocket 23; The fluid source fluid can't flow in the control volume from the 5th opening 45, and promptly this moment, balance valve core 12 was in state of equilibrium again, accomplished the input of control volume fluid under changeover valve core 15 auto states.
Please refer to Fig. 7, describe full equilibrium valve is realized the output of external control body inner fluid under the selector valve auto state process now in detail.Be that opening 34 has the external fluid input, selector valve 15 moves at this moment, i.e. shown positions.This moment, first passage 51 was communicated with external fluid recovery component port 33.The 4th opening 44 and communicate with the external control body through communication passage 202, the 3rd opening 43 communicates with storing cavity 201 through opening 431, and when control volume load active force is constant, during no applied external force, the suffered hydrodynamic pressure in balance valve core 12 two ends equates.Promptly this moment, balance valve core 12 was in state of equilibrium; Under state of equilibrium; The segmentation 64 and the first passage 51 of counter balance pocket 23 isolated by balance valve core 12; The segmentation 64 of counter balance pocket 23 and the 5th opening 45 communicate, and the 5th opening 45 communicates through communication passage 202 and external control body, and promptly external control body fluid can't flow out from opening 33.When control volume load active force increases; The control volume fluid pressure increases; Promptly the hydrodynamic pressure of the 4th opening 44 ends increases, and storing cavity 201 fluid pressures are constant, this moment balance valve core 12 at the pressure of the 4th opening 44 ends greater than pressure at the 3rd opening 43 ends; Balance valve core 12 is to the motion of the 4th opening 43 extreme directions, and the segmentation 64 of counter balance pocket 23 is communicated with first passage 51.And the segmentation 64 of counter balance pocket 23 and the 5th opening 45 are communicated with; The 5th opening 45 is communicated with control volume; Be that first passage 51 is communicated with control volume, changeover valve core 15 is under the auto state, and promptly first passage 51 is communicated with opening 33; Be that external control body and external fluid reclaim the assembly connection, external control body fluid flows out to external fluid from opening 33 and reclaims the assembly.When the reduction of external control body load active force, because external control body self character, the control volume volume reduces, the reduction of control volume fluid pressure, and promptly the control volume fluid pressure is the same with the preceding control volume internal pressure of fluid input.Fluid force and the storing cavity 201 that then acts on balance valve core 12 from the 4th opening 44 is in equivalent state again from the hydrodynamic pressure of the 3rd opening 43 ends; Balance valve core 12 resets; Segmentation 64 isolating seals of first passage 51 and counter balance pocket 23; The control volume inner fluid can't flow out to external fluid from the 5th opening 45 and reclaim in the assembly, and promptly this moment, balance valve core 12 was in state of equilibrium again, accomplished the output of control volume fluid under changeover valve core 12 auto states.
In sum,, make the replaceable existing complex fluid control loop of the present invention,, make the present invention have very high Security because the present invention can protect the sudden change of external control body inner fluid, and does not have pipe fitting to connect basically because the present invention has full equilibrium function.Simultaneously, because structural feature of the present invention makes the present invention have very strong maintainability.And the present invention need not only through structure exquisite in the balance valve body, can realize the effect of balance through complicated controlling parts, and is simple in structure.
The preferred embodiment of the present invention just is used for helping to set forth the present invention.Preferred embodiment does not have all details of detailed descriptionthe, does not limit this invention yet and is merely described embodiment.Obviously, according to the content of this specification, can do a lot of modifications and variation.These embodiments are chosen and specifically described to this specification, is in order to explain principle of the present invention and practical application better, thereby person skilled can be utilized the present invention well under making.The present invention only receives the restriction of claims and four corner and equivalent.
Claims (6)
1. a full-balanced control valve is characterized in that, comprising: an air passage block and the balance valve body that can connect as one with this air passage block, wherein:
But be provided with the storing cavity of store fluid and the communication passage that can communicate in this air passage block, and this storing cavity does not communicate with this communication passage in this air passage block with the external control body;
This balance valve body is provided with counter balance pocket, input cavity, output cavity and switching-over chamber; In each cavity respectively correspondence balance valve core, input spool, output spool and changeover valve core are set; Those spools and respective chamber sealing, and can be in each self-corresponding cavity intrinsic pressure control lower slider;
This input cavity is communicated with external fluid input control unit, and this output cavity connection connects external fluid output control unit and external fluid reclaims assembly, this switching-over chamber connection external fluid switching-over control unit;
This counter balance pocket and output cavity through first passage be connected, this input cavity is connected through second channel with the switching-over chamber, this switching-over chamber is connected through third channel with this counter balance pocket, and this second channel passes through inlet opening connection external source of fluid;
This counter balance pocket, output cavity and input cavity are communicated with the communication passage that communicates with the external control body of this air passage block, and wherein said counter balance pocket is provided with the 4th opening and the 5th opening, the communication passage of the 4th opening and the 5th this air passage block of open communication; Said output cavity is provided with second opening, this communication passage of this second open communication air passage block; This input cavity is provided with the 6th opening, the communication passage of the 6th this air passage block of open communication;
This counter balance pocket is communicated with this storing cavity with this input cavity; Wherein said counter balance pocket is communicated with in the following manner with storing cavity with input cavity and realizes: said counter balance pocket is provided with the 3rd opening; Said input cavity is provided with first opening, communicates and the position is tightly connected corresponding to the opening of first opening and the 3rd opening in storing cavity respectively with on being arranged on air passage block.
2. full-balanced control valve as claimed in claim 1 is characterized in that, said storing cavity equates in order to realize fluid pressure and the fluid pressure in the external control body that its inner sealing stores.
3. full-balanced control valve as claimed in claim 1; It is characterized in that: respectively there is a precision spring at the two ends of said balance valve core; The intermediate section of said counter balance pocket and communicate with the external control body, and the intermediate section of balance valve core and isolate with the sealed at both ends of said balance valve core through said communication passage.
4. full-balanced control valve as claimed in claim 1; It is characterized in that: the variation of an end perception external control body fluid pressure of said balance valve core; When hydrodynamic pressure is asymmetric; Orientable motion makes counter balance pocket intermediate section and external source of fluid or external fluid reclaim assembly and is communicated with, and the control volume inner fluid is increased or minimizing.
5. full-balanced control valve as claimed in claim 1; It is characterized in that: when external control body fluid pressure is replied initial value; When said balance valve core two ends hydrodynamic pressure equated again, said balance valve core recovered initial bit, and control volume inner fluid capacity no longer changes.
6. full-balanced control valve as claimed in claim 1 is characterized in that, said balance valve core, input spool, output spool and changeover valve core respectively keep initial position through spring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010178412 CN101846110B (en) | 2010-05-18 | 2010-05-18 | Full-balanced control valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010178412 CN101846110B (en) | 2010-05-18 | 2010-05-18 | Full-balanced control valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101846110A CN101846110A (en) | 2010-09-29 |
| CN101846110B true CN101846110B (en) | 2012-12-26 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201010178412 Expired - Fee Related CN101846110B (en) | 2010-05-18 | 2010-05-18 | Full-balanced control valve |
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| Country | Link |
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| CN (1) | CN101846110B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109973693B (en) * | 2019-04-28 | 2023-12-29 | 张家港保税区昊大微控技术有限公司 | Balancing valve and fluid balancing method |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5309936A (en) * | 1993-04-30 | 1994-05-10 | Dana Corporation | Poppet configuration for counterbalance valve |
| CN2438895Y (en) * | 2000-08-16 | 2001-07-11 | 成都久安输配设备有限公司 | Balance pressure regulating valve |
| CN201057181Y (en) * | 2007-10-27 | 2008-05-07 | 常德信诚液压有限公司 | Balancing brake valve |
| CN201071846Y (en) * | 2007-08-22 | 2008-06-11 | 上海昂丰矿机科技有限公司 | Automatic control valve block of double fluid flow differential cylinder |
| CN201772105U (en) * | 2010-05-18 | 2011-03-23 | 陈浩 | Full balanced control valve |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA964163A (en) * | 1972-03-08 | 1975-03-11 | Ford Motor Company Of Canada | Tractor hydraulic lift control valve |
-
2010
- 2010-05-18 CN CN 201010178412 patent/CN101846110B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5309936A (en) * | 1993-04-30 | 1994-05-10 | Dana Corporation | Poppet configuration for counterbalance valve |
| CN2438895Y (en) * | 2000-08-16 | 2001-07-11 | 成都久安输配设备有限公司 | Balance pressure regulating valve |
| CN201071846Y (en) * | 2007-08-22 | 2008-06-11 | 上海昂丰矿机科技有限公司 | Automatic control valve block of double fluid flow differential cylinder |
| CN201057181Y (en) * | 2007-10-27 | 2008-05-07 | 常德信诚液压有限公司 | Balancing brake valve |
| CN201772105U (en) * | 2010-05-18 | 2011-03-23 | 陈浩 | Full balanced control valve |
Non-Patent Citations (1)
| Title |
|---|
| JP特开48-103303A 1973.12.25 |
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| Publication number | Publication date |
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| CN101846110A (en) | 2010-09-29 |
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