CN103671318B - Pilot type flow-controllable check valve - Google Patents
Pilot type flow-controllable check valve Download PDFInfo
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- CN103671318B CN103671318B CN201210351759.5A CN201210351759A CN103671318B CN 103671318 B CN103671318 B CN 103671318B CN 201210351759 A CN201210351759 A CN 201210351759A CN 103671318 B CN103671318 B CN 103671318B
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- valve
- pilot control
- spool
- main valve
- main
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- 239000000945 filler Substances 0.000 claims abstract description 32
- 239000000446 fuel Substances 0.000 claims abstract description 14
- 238000006073 displacement reaction Methods 0.000 claims abstract description 10
- 230000007704 transition Effects 0.000 claims abstract description 10
- 239000012530 fluid Substances 0.000 claims description 12
- 230000000694 effects Effects 0.000 claims description 8
- 239000000463 material Substances 0.000 abstract description 3
- 239000003921 oil Substances 0.000 description 19
- 238000000034 method Methods 0.000 description 4
- 239000010720 hydraulic oil Substances 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 230000008901 benefit Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
Landscapes
- Fluid-Driven Valves (AREA)
- Check Valves (AREA)
Abstract
The invention provides a kind of pilot type flow-controllable check valve, described valve comprises valve body (1), main valve plug (2), filler opening (A1), oil outlet (B1), main spool spring (3), valve stifled (4), main valve chamber, pilot control path, pilot control chamber, fuel inlet fitting (5), transition block (6), pilot control spool (7), pilot control spring (8), delivery connection (9); Control the displacement that oil (pi) controls pilot control spool (7), the i.e. opening area of pilot control spool, pressure in the cavity of pilot control spool (7) control bound core (2), the i.e. displacement of main valve plug, the opening area change of main valve plug exports different flows.Pilot type flow-controllable check valve structure of the present invention is simple, is integrated with the function of one-way valve, pilot valve, flow control valve, not only saves material, and failure rate is low.When realizing same function, realize above-mentioned three kinds of functions with simple structure.
Description
Technical field
The present invention relates to pilot type flow-controllable check valve, especially relate to a kind of pilot control there is non-return valve function and can guide's one-way flow control valve of output flow on request.
Background technique
In hydraulic system, one-way valve flows to direction flowing and can not the hydrovalve of reverse flow for controlling liquid, therefore be also called safety check, one-way valve primarily of compositions such as valve body, spool, springs, when pressure oil flows into from filler opening, overcome spring force and spool is backed down, by the hollow structure on spool, flow out, if pressure oil flows into from oil outlet from oil outlet, spool is close to valve port under the effect of spring force and/or hydraulic coupling, blocks oil circuit.In addition, in hydraulic system, flow control valve is referred to as Flow valve, and it comes regulator solution resistance and flow, to regulate the movement velocity of executive component by the size changing valve flow area.Conventional Flow valve and one-way valve do not possess pilot control function, pilot valve, Flow valve and one-way valve are divided into different hydrovalves by function, if simply get up to use by several valve stack combinations, then structure is too huge and complicated, and rate of fault is also high than single valve.
Summary of the invention
In order to realize pilot control, unidirectional control and flow control simultaneously, the invention provides a kind of guide's one-way flow control valve, it can realize above-mentioned several functions, and has simple structure and lower rate of fault.
Technological scheme of the present invention comprises provides a kind of pilot type flow-controllable check valve, described valve comprises that valve body 1, main valve plug 2, filler opening A1, oil outlet B1, main spool spring 3, valve are stifled 4, main valve chamber, pilot control path, pilot control chamber, fuel inlet fitting 5, transition block 6, pilot control spool 7, pilot control spring 8, delivery connection 9; Main valve chamber is arranged in valve body 1, main valve plug 2 and valve stifled 4 is arranged in main valve chamber, valve block up 4 outside concordant with valve body 1, filler opening A1 is positioned at the side of main valve plug, valve blocks up 4 to be positioned at main valve plug opposite side relative to filler opening A1, and main valve plug 2 controls the oil circuit break-make of filler opening A1 and oil outlet B1;
Main valve plug 2 is substantially cylindrical-shaped structure, the diameter of main valve plug near one end of filler opening A1 is less than main valve plug blocks up 4 one end diameter near valve, main valve plug extends in the opposite direction from the one end near filler opening A1, main valve plug comprises step in the one end near filler opening A1, the shoulder that described step and valve body are formed forms matching relationship, to open and close the oil circuit of filler opening A1 and oil outlet B1; Described main valve plug comprises central opening and hollow valve core chamber, and fluid enters hollow valve core chamber from central opening, and main spool spring 3 is positioned at hollow valve core chamber, and one end of main spool spring 3 is resisted against on valve stifled 4, and the other end is resisted against on the step in hollow valve core chamber; Valve body offers pilot control path, this pilot control path is opened and closed by pilot control spool 7, pilot control spool 7 is positioned at the pilot control chamber of valve body, pilot control spool is columned hollow structure substantially, the one end in pilot control chamber comprises fuel inlet fitting 5, and the other end comprises delivery connection 9, and pilot control spring 8 is arranged between pilot control spool 7 and delivery connection 9, one end is against delivery connection 9, and the other end is against pilot control spool 7; Transition block 6 is arranged between fuel inlet fitting 5 and pilot control spool 7, and the pilot control oil pi entered from fuel inlet fitting 5 is acted on pilot control spool 7 by transition block 6, and the biasing force impelling pilot control spool 7 to overcome pilot control spring 8 is opened;
When pilot-actuated valve core 7 is opened, fluid is flowed out from the hollow valve core chamber of main valve plug by pilot control path, discharge from delivery connection 9 after flowing through the hollow structure of pilot control spool 7, thus make the fluid effect main valve plug that enters from filler opening A1, make primary spools overcome the biasing force of main spool spring 3 and open, now fluid flows to oil outlet B1 from filler opening A1; The opening area of pilot control spool 7 mates with the displacement amount of main valve plug 2, thus controls by the displacement of control bound core 2 flow flowing through valve.
Guide's one-way flow control valve structure of the present invention is simple, is integrated with the function of one-way valve, pilot valve, flow control valve, not only saves material, and failure rate is low.When realizing same function, realize above-mentioned three kinds of functions with simple structure.
Accompanying drawing explanation
When reading detailed description and the embodiment of following appended with drawings, these and other feature, aspect and advantage of the present invention will be better understood, wherein:
Hydraulic system principle figure when Fig. 1 is guide's one-way flow control valve of the present invention closedown, wherein pilot control spool is in closed condition;
Hydraulic system principle figure when Fig. 2 is guide's one-way flow control valve of the present invention unlatching, wherein pilot control spool is in opening state;
In figure, 1-valve body, 2-main valve plug, 3-main valve plug spring, 4-valve blocks up, 5-fuel inlet fitting, 6-transition block, 7-pilot control spool, 8-pilot control spring, 9-delivery connection.
Embodiment
With reference to Fig. 1-2, the invention provides a kind of pilot type flow-controllable check valve of a kind of guide's one-way flow control valve, described valve comprise that valve body 1, main valve plug 2, filler opening A1, oil outlet B1, main spool spring 3, valve are stifled 4, main valve chamber, pilot control path, pilot control chamber, fuel inlet fitting 5, transition block 6, pilot control spool 7, pilot control spring 8, delivery connection 9; Main valve chamber is arranged in valve body 1, main valve plug 2 and valve stifled 4 is arranged in main valve chamber, valve block up 4 outside concordant with valve body 1, filler opening A1 is positioned at the side of main valve plug, valve blocks up 4 to be positioned at main valve plug opposite side relative to filler opening A1, and main valve plug 2 controls the oil circuit break-make of filler opening A1 and oil outlet B1.Main valve plug 2 is substantially cylindrical-shaped structure, the diameter of main valve plug near one end of filler opening A1 is less than main valve plug blocks up 4 one end diameter near valve, main valve plug extends in the opposite direction from the one end near filler opening A1, main valve plug comprises step in the one end near filler opening A1, the shoulder that described step and valve body are formed forms matching relationship, to open and close the oil circuit of filler opening A1 and oil outlet B1; Described main valve plug comprises central opening and hollow valve core chamber, and fluid enters hollow valve core chamber from central opening, and main spool spring 3 is positioned at hollow valve core chamber, and one end of main spool spring 3 is resisted against on valve stifled 4, and the other end is resisted against on the step in hollow valve core chamber; Valve body offers pilot control path, this pilot control path is opened and closed by pilot control spool 7, pilot control spool 7 is positioned at the pilot control chamber of valve body, pilot control spool is columned hollow structure substantially, the one end in pilot control chamber comprises fuel inlet fitting 5, and the other end comprises delivery connection 9, and pilot control spring 8 is arranged between pilot control spool 7 and delivery connection 9, one end is against delivery connection 9, and the other end is against pilot control spool 7; Transition block 6 is arranged between fuel inlet fitting 5 and pilot control spool 7, and the pilot control oil pi entered from fuel inlet fitting 5 is acted on pilot control spool 7 by transition block 6, and the biasing force impelling pilot control spool 7 to overcome pilot control spring 8 is opened.
When pilot-actuated valve core 7 is opened, fluid is flowed out from the hollow valve core chamber of main valve plug by pilot control path, discharge from delivery connection 9 after flowing through the hollow structure of pilot control spool 7, thus make the fluid effect main valve plug that enters from filler opening A1, make primary spools overcome the biasing force of main spool spring 3 and open, now fluid flows to oil outlet B1 from filler opening A1; The opening area of pilot control spool 7 mates with the displacement amount of main valve plug 2, thus controls by the displacement of control bound core 2 flow flowing through valve
Specific works process is as follows: non-return valve operational process: with reference to figure 1, A1 mouth is without under pressure condition, main valve plug 2 is pressed on valve body 1 under the effect of main valve plug spring 3, A1 mouth pressure raises, hydraulic oil enters main valve plug inner chamber by the aperture of main valve plug 2, external and internal pressure is equal, and main valve plug 2 can not be opened, and hydraulic oil can not flow to B1 mouth from A1 mouth.Referring again to Fig. 2, pilot control spool 7 moves under the oily pi effect of control, and the pressure in main valve plug 2 hollow valve core chamber is laid down, and main valve plug 2 is moved inward by compression under the effect of A1 mouth pressure, and hydraulic oil flows to B1 mouth from A1 mouth.
Flow control process: with reference to figure 2, pilot control spool 7 is opened under the effect of control oily pi pressure controllable, and opening area sets according to actual needs, carrys out the displacement amount of control bound core 2.Main valve plug 2, when displacement is controlled, changes opening area, changes the output of flow.
Guide's one-way flow control valve structure of the present invention is simple, is integrated with the function of one-way valve, pilot valve, flow control valve, not only saves material, and failure rate is low.When realizing same function, achieve above-mentioned three kinds of functions with simple structure.
Although in conjunction with the embodiments above-mentioned and accompanying drawing is described the specific embodiment of the present invention; but not limiting the scope of the invention; one of ordinary skill in the art should be understood that; on the basis of technological scheme of the present invention, those skilled in the art do not need to pay various amendment or distortion that creative work can make still within protection scope of the present invention.
Claims (1)
1. a pilot type flow-controllable check valve, described valve comprises valve body (1), main valve plug (2), filler opening (A1), oil outlet (B1), main spool spring (3), valve stifled (4), main valve chamber, pilot control path, pilot control chamber, fuel inlet fitting (5), transition block (6), pilot control spool (7), pilot control spring (8), delivery connection (9);
Main valve chamber is arranged in valve body (1), main valve plug (2) and valve stifled (4) are arranged in main valve chamber, the outside of valve stifled (4) is concordant with valve body (1), filler opening (A1) is positioned at the side of main valve plug, valve stifled (4) is positioned at the opposite side of main valve plug relative to filler opening (A1), main valve plug (2) controls the oil circuit break-make of filler opening (A1) and oil outlet (B1); It is characterized in that:
Main valve plug (2) is substantially cylindrical-shaped structure, the diameter of main valve plug near one end of filler opening (A1) is less than the diameter of main valve plug near stifled (4) one end of valve, main valve plug extends in the opposite direction from the one end near filler opening (A1), main valve plug comprises step in the one end near filler opening (A1), the shoulder that described step and valve body are formed forms matching relationship, to open and close the oil circuit of filler opening (A1) and oil outlet (B1);
Described main valve plug comprises central opening and hollow valve core chamber, fluid enters hollow valve core chamber from central opening, main spool spring (3) is positioned at hollow valve core chamber, one end of main spool spring (3) is resisted against on valve stifled (4), and the other end is resisted against on the step in hollow valve core chamber;
Valve body offers pilot control path, this pilot control path is opened and closed by pilot control spool (7), pilot control spool (7) is positioned at the pilot control chamber of valve body, pilot control spool is columned hollow structure substantially, the one end in pilot control chamber comprises fuel inlet fitting (5), the other end comprises delivery connection (9), pilot control spring (8) is arranged between pilot control spool (7) and delivery connection (9), one end is against delivery connection (9), and the other end is against pilot control spool (7);
Transition block (6) is arranged between fuel inlet fitting (5) and pilot control spool (7), the pilot control oil (pi) entered from fuel inlet fitting (5) is acted on pilot control spool (7) by transition block (6), and the biasing force impelling pilot control spool (7) to overcome pilot control spring (8) is opened;
When pilot-actuated valve core (7) is opened, fluid is flowed out from the hollow valve core chamber of main valve plug by pilot control path, discharge from delivery connection (9) after flowing through the hollow structure of pilot control spool (7), thus make the fluid effect main valve plug that enters from filler opening (A1), make primary spools overcome the biasing force of main spool spring (3) and open, now fluid flows to oil outlet (B1) from filler opening (A1);
The opening area of pilot control spool (7) mates with the displacement amount of main valve plug (2), thus controls by the displacement of control bound core (2) flow flowing through valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210351759.5A CN103671318B (en) | 2012-09-20 | 2012-09-20 | Pilot type flow-controllable check valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210351759.5A CN103671318B (en) | 2012-09-20 | 2012-09-20 | Pilot type flow-controllable check valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103671318A CN103671318A (en) | 2014-03-26 |
| CN103671318B true CN103671318B (en) | 2015-12-16 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210351759.5A Active CN103671318B (en) | 2012-09-20 | 2012-09-20 | Pilot type flow-controllable check valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103671318B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104074823B (en) * | 2014-06-26 | 2016-07-06 | 无锡市威海达机械制造有限公司 | A kind of spacing return check valve |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0798471A2 (en) * | 1996-03-25 | 1997-10-01 | Hydrolux S.A.R.L. | Two-way cartridge valve |
| GB2335967A (en) * | 1998-03-28 | 1999-10-06 | Dbt Gmbh | Hydraulically trippable check valve |
| CN202040136U (en) * | 2011-03-31 | 2011-11-16 | 乐清市东风煤矿设备有限公司 | Pilot operated stop valve |
| CN202833384U (en) * | 2012-09-20 | 2013-03-27 | 山重建机有限公司 | Pilot type one-way valve capable of controlling flow |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100487291C (en) * | 2004-07-12 | 2009-05-13 | 迪芬巴赫控制系统股份有限公司 | Releasable non-return valve |
-
2012
- 2012-09-20 CN CN201210351759.5A patent/CN103671318B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0798471A2 (en) * | 1996-03-25 | 1997-10-01 | Hydrolux S.A.R.L. | Two-way cartridge valve |
| GB2335967A (en) * | 1998-03-28 | 1999-10-06 | Dbt Gmbh | Hydraulically trippable check valve |
| CN202040136U (en) * | 2011-03-31 | 2011-11-16 | 乐清市东风煤矿设备有限公司 | Pilot operated stop valve |
| CN202833384U (en) * | 2012-09-20 | 2013-03-27 | 山重建机有限公司 | Pilot type one-way valve capable of controlling flow |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103671318A (en) | 2014-03-26 |
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Effective date of registration: 20161123 Granted publication date: 20151216 |
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Date of cancellation: 20180523 Granted publication date: 20151216 |
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| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of invention: Pilot controlled flow check valve Effective date of registration: 20211217 Granted publication date: 20151216 Pledgee: LINYI SHANZHONG EXCAVATOR CO.,LTD. Pledgor: STRONG CONSTRUCTION MACHINERY Co.,Ltd. Registration number: Y2021980015338 |
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| PC01 | Cancellation of the registration of the contract for pledge of patent right | ||
| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Date of cancellation: 20230727 Granted publication date: 20151216 Pledgee: LINYI SHANZHONG EXCAVATOR CO.,LTD. Pledgor: STRONG CONSTRUCTION MACHINERY Co.,Ltd. Registration number: Y2021980015338 |