CN109751290A - A kind of off-load overflow complex controll valve arrangement - Google Patents
A kind of off-load overflow complex controll valve arrangement Download PDFInfo
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- CN109751290A CN109751290A CN201711075871.XA CN201711075871A CN109751290A CN 109751290 A CN109751290 A CN 109751290A CN 201711075871 A CN201711075871 A CN 201711075871A CN 109751290 A CN109751290 A CN 109751290A
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- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 claims abstract description 28
- 230000001105 regulatory effect Effects 0.000 claims abstract description 14
- 238000007789 sealing Methods 0.000 claims description 4
- 238000005303 weighing Methods 0.000 claims description 4
- 230000006835 compression Effects 0.000 claims description 3
- 238000007906 compression Methods 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 2
- 239000012530 fluid Substances 0.000 description 2
- 235000006508 Nelumbo nucifera Nutrition 0.000 description 1
- 240000002853 Nelumbo nucifera Species 0.000 description 1
- 235000006510 Nelumbo pentapetala Nutrition 0.000 description 1
- 239000010426 asphalt Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000010355 oscillation Effects 0.000 description 1
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Abstract
It include that overflow valve, guide contend with valve the present invention relates to a kind of off-load overflow complex controll valve arrangement；Overflow valve is successively arranged push rod, poppet valve core, spring, spring base, pressure regulating screw containing valve body, body cavity, the push rod left side and body cavity wall constitute operating pressure oil oil pocket, push rod, poppet valve core and body cavity wall constitute pressure unloading oil oil pocket, and poppet valve core, pressure regulating screw and body cavity wall constitute draining chamber；Guide contends with valve by the valve body that contends with, and valve pocket, the valve core that contends with, the valve spring that contends with, pedestal, the valve regulation screw that contends with form, and the valve body that contends with is fixed on above overflow valve body.Effect of the invention: 1) whether the present invention by the oil pressure of pressure unloading oil determine the opening and closing of overflow valve, override pressure will not be generated, the job stability of valve is improved；2) present invention is additionally arranged guide and contends with valve, adjusts pressure unloading by the pressure value of operating pressure oil, meets the requirement of single equipment various working, and stable action, reliable, achieves substantive progress.
Description
Technical field
The present invention relates to a kind of fluid pressure regulators, more particularly, to a kind of off-load overflow complex controll valve arrangement.
Background technique
In the prior art, overflow valve is critical component in hydraulic system, it mainly passes through overflow, makes the pressure of system
Power keeps constant or prevents system overload.Usually operating pressure oil and pressure unloading oil are arranged movable for existing overflow valve
The two sides of push rod open or close overflow valve under operating pressure oil and the collective effect of pressure unloading oil.This structure is not
Foot place is, when operating pressure oil will reach critical opening point position, pressure unloading oil, which does not reach setting value, to be unloaded ahead of time
Lotus causes the override pressure of overflow valve；Another shortcoming be in this state pressure oscillation is big, movement owe it is steady and
Easily cause to shake, stability is poor, is not able to satisfy the needs in market.
Summary of the invention
The purpose of the present invention is providing for prior art shortcoming, one kind is structurally reasonable, can facilitate adjusting off-load pressure
Power, reduce override pressure and reliable and stable off-load overflow complex controll valve arrangement.
The purpose of the present invention is realized by following measures: a kind of off-load overflow complex controll valve arrangement, includes overflow
Valve (1), overflow valve are successively arranged push rod (12), poppet valve core (13), spring (14), spring base containing valve body (11), body cavity
(15), pressure regulating screw (16), which is characterized in that be additionally provided with guide and contend with valve (2)；Wherein:
The guide contends with valve (2) by the valve body that contends with (21), valve pocket (22), the valve core that contends with (23), the valve spring that contends with (24),
Pedestal (25) contends with valve regulation screw (26), and the valve body that contends with (21) is equipped with ladder-like in first, second, third, fourth
Concentric hole, valve pocket (22) outer rim is equipped with the first cylinder, the second cylinder that match with second, third stepped hole, first
Cylinder, the second cylinder outer rim are respectively provided with first annular groove (221), second annular groove (222), first annular groove
(221), second annular groove (222) is respectively provided with the first through hole (223) of break-through sleeve wall, the second through-hole (224), described to contend with
Valve core (23) cylinder matches with valve pocket (22) internal chamber wall, and the valve core that contends with (23) cylinder is by the annular groove at intermediate position point
For the first cylinder of spool (231), the second cylinder (232), pedestal (25) outer rim and valve body (21) fourth order scalariform of contending with
Hole matches, and the faying face of pedestal (25) and the valve body (21) that contends with is equipped with the cavity for accommodating valve spring (24) of contending with, the valve
Set (22), the valve core that contends with (23), the valve spring that contends with (24), pedestal (25) are sequentially loaded into the valve body that contends with (21), and contend with valve
Pressure regulating screw (26) is screwed into pedestal (25), its screw end compression contends with valve spring (24)；
The right side of overflow valve (1) push rod (12) is equipped with blind hole (3), and the aperture of blind hole (3) is the valve seat of poppet valve core (13),
The outer rim of push rod (12) is equipped with annular oil groove, and annular oil groove is equipped with the radial through-hole of connection blind hole (3) side wall, the push rod (12)
It is firstly fixed in overflow valve body (11), poppet valve core (13), spring (14), spring base (15) are successively packed into overflow valve from right side
In valve body (11), pressure regulating screw (16) is screwed into valve body (11), its screw end holddown spring seat, push rod (12) left side with
Valve body (11) internal chamber wall constitutes operating pressure oil oil pocket (4), and valve body (11) is equipped with oil inlet, push rod in operating pressure oil oil pocket section
(12), poppet valve core (13) and valve body (11) internal chamber wall constitute pressure unloading oil oil pocket (5), and pressure unloading oil oil pocket (5) is equipped with section
Head piece, poppet valve core (13), pressure regulating screw (16) and valve body (11) internal chamber wall constitute draining chamber (6), and draining chamber is equipped with drain tap；
The valve body that contends with (21) is fixed on above overflow valve body (11), the operating pressure oil oil pocket (4) of the overflow valve
The first stepped hole of valve body communicates with contending with, the first cylinder ring of the draining chamber (6) of overflow valve and the valve pocket (22) for the valve that contends with
Connected in star (221) communicates, and the pressure unloading oil oil pocket (5) of overflow valve (1) and the second cylinder annular of the valve valve pocket (22) that contends with are recessed
Slot (222) with communicate, (23) second cylinder (232) of valve core that contends under normal conditions seals the second through-hole (224) of valve pocket, when anti-
Weighing apparatus valve core (23), which moves to right, opens the second through-hole (224), and the pressure unloading oil oil pocket (5) of overflow valve (1) passes through the second through-hole
(224), first through hole (223) is communicated with overflow valve draining chamber (6).
First, second cylinder of the valve pocket (22) and corresponding second, third stepped hole contact surface of the valve that contends with (2) are each
Equipped with sealing ring.
Compared with prior art, a kind of off-load overflow complex controll valve arrangement proposed by the present invention is used, is had as follows
Advantage: 1) present invention under normal conditions, whether determining the opening and closing of overflow valve by the oil pressure of pressure unloading oil, it is inclined will not to generate pressure regulation
Difference improves the job stability of valve；2) present invention is additionally arranged guide and contends with valve, is adjusted by the pressure value of operating pressure oil
Pressure unloading, and pressure unloading is controlled simultaneously by " logic or " circuit, meet the requirement of single equipment various working, and act
Steadily, substantive progress reliably, is achieved.
Detailed description of the invention
Fig. 1 is one embodiment schematic diagram proposed by the present invention.
Specific embodiment
Elaborate with reference to the accompanying drawing to specific embodiment: Fig. 1 shows one embodiment of the present of invention.Figure
In, a kind of off-load overflow complex controll valve arrangement includes overflow valve (1), and overflow valve is successively set containing valve body (11), body cavity
There are push rod (12), poppet valve core (13), spring (14), spring base (15), pressure regulating screw (16), guide to contend with valve (2)；Wherein:
The guide contends with valve (2) by the valve body that contends with (21), valve pocket (22), the valve core that contends with (23), the valve spring that contends with (24),
Pedestal (25) contends with valve regulation screw (26), and the valve body that contends with (21) is equipped with ladder-like in first, second, third, fourth
Concentric hole, valve pocket (22) outer rim is equipped with the first cylinder, the second cylinder that match with second, third stepped hole, first
Cylinder, the second cylinder outer rim are respectively provided with first annular groove (221), second annular groove (222), first annular groove
(221), second annular groove (222) is respectively provided with the first through hole (223) of break-through sleeve wall, the second through-hole (224), described to contend with
Valve core (23) cylinder matches with valve pocket (22) internal chamber wall, and the valve core that contends with (23) cylinder is by the annular groove at intermediate position point
For the first cylinder of spool (231), the second cylinder (232), pedestal (25) outer rim and valve body (21) fourth order scalariform of contending with
Hole matches, and the faying face of pedestal (25) and the valve body (21) that contends with is equipped with the cavity for accommodating valve spring (24) of contending with, the valve
Set (22), the valve core that contends with (23), the valve spring that contends with (24), pedestal (25) are sequentially loaded into the valve body that contends with (21), and contend with valve
Pressure regulating screw (26) is screwed into pedestal (25), its screw end compression contends with valve spring (24).In this structure, using the structure of valve pocket
Come be arranged do weighing apparatus valve asphalt channel, simplify the internal structure for the valve body that contends with, reduce production cost.It is also logical in this structure
The movement that the pressure value for the operating pressure oil for crossing valve core side of contending with carrys out guide spool has compared with traditional poppet valve core
Stable action will not shake, and the stability of valve is improved, and be adapted to by the adjusting to the valve spring that contends with single
The requirement of equipment various working improves the versatility application of unloading overflow valve, and a weight will be served as in entire oil piping system
The role wanted can be one step of the convenient upper raising of guest operation.
The right side of overflow valve (1) push rod (12) is equipped with blind hole (3), and the aperture of blind hole (3) is poppet valve core (13)
Valve seat, the outer rim of push rod (12) are equipped with annular oil groove, and annular oil groove is equipped with the radial through-hole of connection blind hole (3) side wall, described to push away
Bar (12) is firstly fixed in overflow valve body (11), and poppet valve core (13), spring (14), spring base (15) are successively packed into from right side
In overflow valve body (11), pressure regulating screw (16) is screwed into valve body (11), its screw end holddown spring seat, and the push rod (12) is left
End face and valve body (11) internal chamber wall constitute operating pressure oil oil pocket (4), and valve body (11) is equipped with oil inlet in operating pressure oil oil pocket section
Mouthful, push rod (12), poppet valve core (13) and valve body (11) internal chamber wall constitute pressure unloading oil oil pocket (5), pressure unloading oil oil pocket (5)
Equipped with restriction, poppet valve core (13), pressure regulating screw (16) and valve body (11) internal chamber wall constitute draining chamber (6), and draining chamber is equipped with and lets out
Hydraulic fluid port.In this structure, under the normality that works, operating pressure oil is not involved in the movement of poppet valve core, and poppet valve core is by the off-load pressure set
Power oil pressure off-load, will not occur override pressure.
The valve body that contends with (21) is fixed on above overflow valve body (11), the operating pressure oil oil pocket (4) of the overflow valve
The first stepped hole of valve body communicates with contending with, the first cylinder ring of the draining chamber (6) of overflow valve and the valve pocket (22) for the valve that contends with
Connected in star (221) communicates, and the pressure unloading oil oil pocket (5) of overflow valve (1) and the second cylinder annular of the valve valve pocket (22) that contends with are recessed
Slot (222) with communicate, (23) second cylinder (232) of valve core that contends under normal conditions seals the second through-hole (224) of valve pocket, when anti-
Weighing apparatus valve core (23), which moves to right, opens the second through-hole (224), and the pressure unloading oil oil pocket (5) of overflow valve (1) passes through the second through-hole
(224), first through hole (223) is communicated with overflow valve draining chamber (6).
The present invention operates in such a way:
When operating pressure oil flows into the operating pressure oil oil pocket of overflow valve, pressure unloading oil stream enters the pressure unloading oil oil of overflow valve
Chamber, if the active force that pressure unloading oil acts on poppet valve core is more than the setting spring force of spring, poppet valve core is opened, off-load pressure
Power oil flows to draining chamber off-load through open poppet valve core；When pressure unloading oil acts on active force the setting lower than spring of poppet valve core
When determining spring force, spring closes poppet valve core, and system can set up pressure at this time.In the above-mentioned non-unloading condition of pressure unloading oil
Under, when operating pressure oil act on the valve core that contends with active force be more than contend with valve spring setting power when, pressure unloading oil warp
Cross the second through-hole of the valve valve pocket that contends with, first through hole is connected to overflow valve draining chamber and completes off-load.When operating pressure oil acts on
Contend with valve core active force be lower than contend with valve spring setting power when, pressure unloading oil not off-load effectively improves system pressure
The power output of pressure unloading oil.The valve spring that contends with can be adjusted according to the pressure value of operating pressure oil, and by " patrolling
Volume or " circuit controls the pressure of pressure unloading oil simultaneously.
The present invention further takes following measure: the first, second cylinder of the valve pocket (22) and the corresponding valve that contends with (2)
Second, third stepped hole contact surface is respectively provided with sealing ring.The leakproofness of each chamber is kept by sealing ring.
Embodiments of the present invention are described above in conjunction with attached drawing, the structure that embodiment provides is not constituted to of the invention
Limitation, those skilled in the art in the art make various deformations or amendments in protection model within the scope of the appended claims
In enclosing.
Claims (2)
- Include overflow valve (1) 1. a kind of off-load overflow complex controll valve arrangement, overflow valve containing valve body (11), body cavity according to It is secondary to be equipped with push rod (12), poppet valve core (13), spring (14), spring base (15), pressure regulating screw (16), which is characterized in that be additionally provided with Guide contends with valve (2)；Wherein:The guide contends with valve (2) by the valve body that contends with (21), valve pocket (22), the valve core that contends with (23), the valve spring that contends with (24), Pedestal (25) contends with valve regulation screw (26), and the valve body that contends with (21) is equipped with ladder-like in first, second, third, fourth Concentric hole, valve pocket (22) outer rim is equipped with the first cylinder, the second cylinder that match with second, third stepped hole, first Cylinder, the second cylinder outer rim are respectively provided with first annular groove (221), second annular groove (222), first annular groove (221), second annular groove (222) is respectively provided with the first through hole (223) of break-through sleeve wall, the second through-hole (224), described to contend with Valve core (23) cylinder matches with valve pocket (22) internal chamber wall, and the valve core that contends with (23) cylinder is by the annular groove at intermediate position point For the first cylinder of spool (231), the second cylinder (232), pedestal (25) outer rim and valve body (21) fourth order scalariform of contending with Hole matches, and the faying face of pedestal (25) and the valve body (21) that contends with is equipped with the cavity for accommodating valve spring (24) of contending with, the valve Set (22), the valve core that contends with (23), the valve spring that contends with (24), pedestal (25) are sequentially loaded into the valve body that contends with (21), and contend with valve Pressure regulating screw (26) is screwed into pedestal (25), its screw end compression contends with valve spring (24)；The right side of overflow valve (1) push rod (12) is equipped with blind hole (3), and the aperture of blind hole (3) is the valve seat of poppet valve core (13), The outer rim of push rod (12) is equipped with annular oil groove, and annular oil groove is equipped with the radial through-hole of connection blind hole (3) side wall, the push rod (12) It is firstly fixed in overflow valve body (11), poppet valve core (13), spring (14), spring base (15) are successively packed into overflow valve from right side In valve body (11), pressure regulating screw (16) is screwed into valve body (11), its screw end holddown spring seat, push rod (12) left side with Valve body (11) internal chamber wall constitutes operating pressure oil oil pocket (4), and valve body (11) is equipped with oil inlet, push rod in operating pressure oil oil pocket section (12), poppet valve core (13) and valve body (11) internal chamber wall constitute pressure unloading oil oil pocket (5), and pressure unloading oil oil pocket (5) is equipped with section Head piece, poppet valve core (13), pressure regulating screw (16) and valve body (11) internal chamber wall constitute draining chamber (6), and draining chamber is equipped with drain tap；The valve body that contends with (21) is fixed on above overflow valve body (11), the operating pressure oil oil pocket (4) of the overflow valve The first stepped hole of valve body communicates with contending with, the first cylinder ring of the draining chamber (6) of overflow valve and the valve pocket (22) for the valve that contends with Connected in star (221) communicates, and the pressure unloading oil oil pocket (5) of overflow valve (1) and the second cylinder annular of the valve valve pocket (22) that contends with are recessed Slot (222) with communicate, (23) second cylinder (232) of valve core that contends under normal conditions seals the second through-hole (224) of valve pocket, when anti- Weighing apparatus valve core (23), which moves to right, opens the second through-hole (224), and the pressure unloading oil oil pocket (5) of overflow valve (1) passes through the second through-hole (224), first through hole (223) is communicated with overflow valve draining chamber (6).
- 2. off-load overflow complex controll valve arrangement shown according to claim 1, which is characterized in that the of the valve pocket (22) One, the second cylinder is respectively provided with sealing ring with corresponding second, third stepped hole contact surface of the valve that contends with (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711075871.XA CN109751290B (en) | 2017-11-06 | 2017-11-06 | Unloading overflow composite control valve structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711075871.XA CN109751290B (en) | 2017-11-06 | 2017-11-06 | Unloading overflow composite control valve structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109751290A true CN109751290A (en) | 2019-05-14 |
| CN109751290B CN109751290B (en) | 2024-06-25 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711075871.XA Active CN109751290B (en) | 2017-11-06 | 2017-11-06 | Unloading overflow composite control valve structure |
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| Country | Link |
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| CN (1) | CN109751290B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003202002A (en) * | 2001-10-30 | 2003-07-18 | Sumitomo (Shi) Construction Machinery Manufacturing Co Ltd | Hydraulic circuit of construction machinery |
| CN101576099A (en) * | 2008-12-18 | 2009-11-11 | 上海电气液压气动有限公司 | Equilibrium valve |
| CN101839359A (en) * | 2009-11-18 | 2010-09-22 | 南京工程学院 | Variable-difference relief valve |
| JP2011226609A (en) * | 2010-04-22 | 2011-11-10 | Hochiki Corp | Stream sensing apparatus and composite valve |
| CN207485763U (en) * | 2017-11-06 | 2018-06-12 | 涌镇液压机械（上海）有限公司 | A kind of off-load overflow complex controll valve arrangement |
-
2017
- 2017-11-06 CN CN201711075871.XA patent/CN109751290B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003202002A (en) * | 2001-10-30 | 2003-07-18 | Sumitomo (Shi) Construction Machinery Manufacturing Co Ltd | Hydraulic circuit of construction machinery |
| CN101576099A (en) * | 2008-12-18 | 2009-11-11 | 上海电气液压气动有限公司 | Equilibrium valve |
| CN101839359A (en) * | 2009-11-18 | 2010-09-22 | 南京工程学院 | Variable-difference relief valve |
| JP2011226609A (en) * | 2010-04-22 | 2011-11-10 | Hochiki Corp | Stream sensing apparatus and composite valve |
| CN207485763U (en) * | 2017-11-06 | 2018-06-12 | 涌镇液压机械（上海）有限公司 | A kind of off-load overflow complex controll valve arrangement |
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| Publication number | Publication date |
|---|---|
| CN109751290B (en) | 2024-06-25 |
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