CN109611404A - A kind of two-way plug-in type pilot controlled check valve - Google Patents
A kind of two-way plug-in type pilot controlled check valve Download PDFInfo
- Publication number
- CN109611404A CN109611404A CN201910118994.XA CN201910118994A CN109611404A CN 109611404 A CN109611404 A CN 109611404A CN 201910118994 A CN201910118994 A CN 201910118994A CN 109611404 A CN109611404 A CN 109611404A
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- Prior art keywords
- valve
- way
- way plug
- oil
- fluid port
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B13/00—Details of servomotor systems ; Valves for servomotor systems
- F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
- F15B13/027—Check valves
-
- 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
- F15B2013/002—Modular valves, i.e. consisting of an assembly of interchangeable components
- F15B2013/004—Cartridge valves
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Check Valves (AREA)
Abstract
The present invention provides a kind of two-way plug-in type pilot controlled check valves.It include: two-way plug-in valve 11, inserting valve deck 12, leading hydraulic control one-way valve 13, the spring cavity C of two-way plug-in valve is connected to by the inserting valve deck 12 with the cut-off hydraulic fluid port of leading hydraulic control one-way valve 13, the leading hydraulic control one-way valve 13 is mounted on inserting valve deck 12, and draws pilot control opening X and guide's oil return opening Y respectively to outer surface；The oil pocket B or oil pocket A of two-way plug-in valve 11 are connected to after throttle orifice T with spring cavity C.This two-way plug-in type pilot controlled check valve compares traditional board-like installation hydraulic control one-way valve and screw thread inserting type check valve, has operating pressure high, and flow is big, using simple, the advantages that low cost.
Description
Technical field
The present invention relates to hydraulic valve fields, the tool in particular to a kind of two-way plug-in valve as hydraulic control one-way valve
Body application.
Background technique
Currently, for the hydraulic operation operating condition of high-speed large-flow, inserting valve technology is generallyd use, for example die casting machine is penetrated
Material oil cylinder is pressurized link during the work time, and rodless cavity pressure can reach close to 40MPa, and this operating condition is according to reversal valve
Or subbase mounted hydraulic control one-way valve does not adapt to its high pressure operating condition, though existing some pressure of screw-in cartridge valve product can
Reach 40MPa or more, be able to satisfy the requirement of pressure, however be all generally the product of small flow structure, is not able to satisfy die casting machine and penetrates
The rate request of material oil cylinder.
For this operating condition of die casting machine oil cylinder, what is generallyd use at present is two-way plug-in valve combination parker
Four hydraulic fluid port hydraulic control one-way valves are controlled, and this mode is not only expensive, but also control mode is more complex.
Summary of the invention
The present invention provides a kind of hydraulic control one-way valves of two-way plug-in, it is intended to solve stream big for high pressure in the prior art
Hydraulic control one-way valve demand is measured, a kind of low cost, easy-to-use product are provided.
The present invention is implemented as follows:
A kind of two-way plug-in type pilot controlled check valve.Include:
Two-way plug-in valve 11, inserting valve deck 12, leading hydraulic control one-way valve 13, the inserting valve deck 12 are arranged in two-way plug-in valve
On 11 and the spring cavity C of two-way plug-in valve 11 is closed, the leading hydraulic control one-way valve 13 is mounted on inserting valve deck 12, two-way
Inserted valve 11 also includes spool 111, it is characterised in that:
Also include throttle orifice T, the oil pocket B or oil pocket A of the two-way plug-in valve 11 after throttle orifice T with spring cavity C
Connection.
The throttle orifice T can be set on spool 111, pass through oil pocket B or oil pocket A directly on spool 111
Throttle orifice T is connected to spring cavity C.
The throttle orifice T also can be set except two-way plug-in valve 11, oil pocket B or oil pocket A by throttle orifice T and
Inserting valve deck 12 is connected to spring cavity C.
The cut-off hydraulic fluid port of the leading hydraulic control one-way valve 13 is connected to the spring cavity C of two-way plug-in valve 11, is drawn simultaneously
Pilot control opening X and guide's oil return opening Y extremely inserts the outer surface of valve deck 12 out；
In preferred embodiments of the present invention, throttle orifice T is arranged on the spool 111 of two-way plug-in valve 11, and two-way is inserted
The oil pocket B of valve 11 is connected to spring cavity C, it is ensured that whole control performance is to have fully demonstrated liquid from B hydraulic fluid port to A hydraulic fluid port zero leakage
Control the key performance of check valve.
In preferred embodiments of the present invention, two-way plug-in valve 11 and inserting valve deck 12 have connection, make formation of the present invention
One entirety has the characteristics of installation is simple, administrative convenience.
The beneficial effects of the present invention are:
The present invention obtains hydraulic control single control check valve by above-mentioned design, has the characteristics that high-pressure high-flow, and structure is simple, uses
More convenient, manufacturing cost is low, adds the product of high performance-cost ratio for existing hydraulic application technology.
Detailed description of the invention
It, below will be to use required in embodiment in order to illustrate more clearly of the technical solution of embodiment of the present invention
Attached drawing be briefly described, it should be understood that the following drawings illustrates only certain embodiments of the present invention, therefore is not to be seen as
It is the restriction to range, it for those of ordinary skill in the art, without creative efforts, can be with root
Other relevant attached drawings are obtained according to these attached drawings.
Fig. 1 is the first of the invention using pattern hydraulic schematic diagram；
Fig. 2 is embodiment of the present invention concrete application hydraulic schematic diagram；
Fig. 3 is prior art two-way plug-in valve as hydraulic control one-way valve concrete application hydraulic schematic diagram；
Fig. 4 is second of application pattern hydraulic schematic diagram of the invention；
Fig. 5 is of the invention the third using pattern hydraulic schematic diagram；
Fig. 6 is the 4th kind of application pattern hydraulic schematic diagram of the invention；
Icon: 1- two-way plug-in type pilot controlled check valve；2- die casting machine oil cylinder；3- check valve；4- fast shot control valve group；5-
Slow shot controls reversal valve；6- pressurization control valve group；7- quick oil-discharging control valve group；The hydraulic control one-way valve of the 8- prior art；11-
Two-way plug-in valve；12- inserts valve deck；13- leading hydraulic control one-way valve；111- spool；The A hydraulic fluid port of A- two-way plug-in valve 11；B-
The B hydraulic fluid port of two-way plug-in valve 11；The spring cavity of C- two-way plug-in valve 11；The throttle orifice of T- spool 111；X- is inserted on valve deck 12
Pilot control opening；Y- inserts guide's oil return opening on valve deck 12；The A1 hydraulic fluid port of A1- slow shot control reversal valve；B1- slow shot control
The B1 hydraulic fluid port of reversal valve processed.
Specific embodiment
To keep the purposes, technical schemes and advantages of embodiment of the present invention clearer, implement below in conjunction with the present invention
The technical solution in embodiment of the present invention is clearly and completely described in attached drawing in mode, it is clear that described reality
The mode of applying is some embodiments of the invention, rather than whole embodiments.Based on the embodiment in the present invention, ability
Domain those of ordinary skill every other embodiment obtained without creative efforts, belongs to the present invention
The range of protection.Therefore, the detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit below and is wanted
The scope of the present invention of protection is sought, but is merely representative of selected embodiment of the invention.Based on the embodiment in the present invention,
Every other embodiment obtained by those of ordinary skill in the art without making creative efforts belongs to this
Invent the range of protection.
In the description of the present invention, it is to be understood that, indicating position or the term of positional relationship are based on shown in attached drawing
Orientation or positional relationship, be merely for convenience of description of the present invention and simplification of the description, rather than the equipment of indication or suggestion meaning
Or element must have a particular orientation, be constructed and operated in a specific orientation, therefore be not considered as limiting the invention.
In the present invention unless specifically defined or limited otherwise, term " installation ", " connected ", " connection ", " fixation " etc.
Term shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or integral；It can be mechanical connect
It connects, is also possible to be electrically connected；It can be directly connected, can also can be in two elements indirectly connected through an intermediary
The interaction relationship of the connection in portion or two elements.It for the ordinary skill in the art, can be according to specific feelings
Condition understands the concrete meaning of above-mentioned term in the present invention.
In the present invention unless specifically defined or limited otherwise, fisrt feature can be on or below second feature
Directly contacted including the first and second features, also may include the first and second features be not direct contact but by them it
Between other characterisation contact.Moreover, fisrt feature is on second feature, top and above include fisrt feature second spy
Right above sign and oblique upper, or first feature horizontal height is merely representative of higher than second feature.Fisrt feature second feature it
Under, lower section and fisrt feature included below be directly below and diagonally below the second feature, or be merely representative of first feature horizontal height
Less than second feature.
Embodiment one
Present embodiments provide a kind of two-way plug-in type pilot controlled check valve 1, comprising:
Two-way plug-in valve 11；
Inserting valve deck 12 is arranged on two-way plug-in valve 11 and closes spring cavity C；
Leading hydraulic control one-way valve 13 is mounted on inserting valve deck 12, forms an entirety；
Design has throttle orifice T to be connected to oil pocket B with spring cavity C on the spool 111 of two-way plug-in valve 11；
The hydraulic fluid port B of two-way plug-in type pilot controlled check valve 1 is connected to the rodless cavity 21 of die casting machine oil cylinder 2, hydraulic fluid port A and is first led back to
Hydraulic fluid port Y is connected to hydraulic oil container by oil return line, and pilot control opening X is connected to the A1 mouth of slow shot control reversal valve 5.
The B1 hydraulic fluid port and fast shot control valve group 4 of slow shot control reversal valve 5 are penetrated after the isolation of check valve 3 with die casting machine
The rodless cavity 21 of material oil cylinder 2 is connected to, and pressurization control valve group 6 is connected to pressurized cylinder, a wherein hydraulic fluid port for quick oil-discharging control valve group 7
It is connected to the rod chamber of die casting machine oil cylinder 2, another hydraulic fluid port is connected to the B1 hydraulic fluid port of slow shot control reversal valve 5, and there are also one
Hydraulic fluid port is connected to oil return pipe to hydraulic oil container.
In the present embodiment, when slow shot controls 5 left position state of reversal valve, pressure source from B1 hydraulic fluid port through check valve 3 toward die casting
The rodless cavity 21 of machine shooting oil cylinder 2 is oil-filled, while fast row's control valve group 7 is opened, and the rod chamber of die casting machine oil cylinder 2 is toward hydraulic
Fuel tank oil extraction, the beginning of shooting oil cylinder 2 are advanced at a slow speed, can be fast by the pressure oil of accumulator when fast shot control valve group 4 is opened
Speed flows through the rodless cavity 21 that die casting machine oil cylinder 2 is filled with after check valve 3, and shooting oil cylinder 2 fast forwards through, when pressurization control valve group
When 6 unlatching, the pressure oil of accumulator can be quickly filled with pressurizing cylinder, after area ratio is converted, in die casting machine oil cylinder 2
Rodless cavity 21 in generate be much higher than system pressure high pressure, conventional design generally can reach 40MPa or so, at this point, check valve 3
And two-way plug-in type pilot controlled check valve 1 of the invention should be at off state, limit the rodless cavity 21 of die casting machine oil cylinder 2
Interior pressure oil leaks.Cut-off principle about check valve 3 is not just described only, and two-way plug-in hydraulic control list of the invention
The principle that can reliably end to valve 1 is such that B hydraulic fluid port is connected to after throttle orifice T with spring cavity C, and passes through pilot-operated type
The cut-off mouth of hydraulic control one-way valve 13 is closed without outside draining, and the pressure of spring cavity C is equal with the pressure of oil pocket B at this time, but
The active area of spring cavity C is greater than the active area of oil pocket B, and spool 111 is remained reliably to push and be closed, and oil pocket B is truncated
It cannot pass through any oil of two-way plug-in type pilot controlled check valve 1 of the invention to the pressure oil of the access of oil pocket A, therefore hydraulic fluid port B
The outside pressure release of mouth, it is ensured that the performance of die casting machine pressurization；After pressurization continues for some time, shooting work is complete
At shooting oil cylinder 2, which will enter, resets operating condition, at this time fast shot control valve group 4 and pressurization control valve group 6 and fast row's control valve group 7
It is turned off, slow shot control reversal valve 5 switchs to right position work status, and pressure source is filled with through A1 mouthfuls to the rod chamber of shooting oil cylinder 2
Pressure oil, while pressure oil being introduced to the pilot control opening X of two-way plug-in type pilot controlled check valve 1 and the fluid-control one-way of pressurizing cylinder
Valve pilot control opening, leading hydraulic control one-way valve 13 is opened at this time, and the pressure oil of spring cavity C passes through leading hydraulic control one-way valve 13
And hydraulic oil container is flowed into after guide's oil return opening Y, i.e. the pressure of spring cavity C is close to zero, and the pressure oil of oil pocket B passes through throttle orifice
T will generate certain resistance when circulating to hydraulic control one-way valve 13, i.e. the pressure of oil pocket B is consistently higher than spring cavity C, then hydraulic fluid port B
Pressure, which can act on, makes spool 111 generate the power being lifted up on the annulus area of oil pocket B, and finally overcomes two-way plug-in valve 11
Spring force after, spool 111 is opened, and hydraulic fluid port B is connected to hydraulic fluid port A, and the pressure oil of the rodless cavity 21 of shooting oil cylinder 2 is inserted through two-way
Hydraulic oil container is flowed back to after valve 11, shooting oil cylinder 2 is realized and retracts reset, simultaneously because the hydraulic control one-way valve of pressurizing cylinder is also opened
, the piston rod of shooting oil cylinder 2 will drive charged piston reset.When slow shot control reversal valve 5 is in middle position state, A1 mouthfuls
It is connected to hydraulic oil container, is close to zero with the pilot control opening X pressure that A1 mouthfuls are connected, then leading hydraulic control one-way valve 13 is closed, valve
Core 111 is closed in the reset that acts on of spring force.
In the present embodiment, if two-way plug-in type pilot controlled check valve 1 to be replaced with to the hydraulic control one-way valve 8 of the prior art, die casting
The course of work of machine shooting is basically unchanged, and only the working principle of hydraulic control one-way valve 8 is different, and hydraulic control one-way valve 8 is to use
Two-way plug-in valve adds four hydraulic fluid port hydraulic control one-way valves to form, wherein four hydraulic fluid port fluid-control one-way valve arrangements are more complex, there are four work
Hydraulic fluid port, compared with two-way plug-in type pilot controlled check valve 1 of the invention, the maximum difference of working principle is: the pressure of hydraulic fluid port B
Oil by inserting valve deck after through four hydraulic fluid port hydraulic control one-way valves introduce two-way plug-in valve spring cavity, therefore shooting integrated oil path plate and
Inserting valve deck will design corresponding oil circuit to realize normal function, and use is relatively complicated, in addition, due to four hydraulic fluid port hydraulic control lists
To valve arrangement complexity, therefore price is costly, generally improves the use cost of user.
In the present embodiment, two-way plug-in type pilot controlled check valve 1 is based on the cut-off from hydraulic fluid port B to hydraulic fluid port A, and throttle sub- T setting
Application on spool 111, when pilot control opening X imports pressure, then hydraulic fluid port B to hydraulic fluid port A is connected, and throttle orifice T is arranged in spool
The structure of inserting valve deck 12 and mating installation integrated oil path plate is simplified on 111.Second and the 4th kind of the present invention using pattern
Are as follows: end from hydraulic fluid port A to hydraulic fluid port B, when pilot control opening X imports pressure, then hydraulic fluid port A to hydraulic fluid port B is connected, and this application pattern needs
The connectivity structure for changing throttle orifice T makes oil pocket A be connected to spring cavity C by throttle orifice T.Second and the 4th kind using pattern phase
Than embodiment one, there are certain deficiencies: there are lesser leakages by hydraulic fluid port A to hydraulic fluid port B i.e. under off state, the reason for this is that spool
111 be slide construction, and the pressure oil of hydraulic fluid port A, can be along the glade plane space of spool 111 to oil after throttle orifice T reaches spring cavity C
Mouth B leakage.The third is arranged at the outside of two-way plug-in valve 11 with the throttle orifice T of the 4th kind of application pattern to the present invention, compares
Embodiment one increases inserting valve deck 12 and mating installation integrated oil path disadvantage is that having had more a control oil circuit
The complexity of plate, therefore the application pattern of the preferred embodiment of the present invention one, i.e. hydraulic fluid port B are ended to hydraulic fluid port A, throttle orifice setting exists
On spool 111.
Claims (3)
1. a kind of two-way plug-in type pilot controlled check valve, comprising:
Two-way plug-in valve (11), inserting valve deck (12), leading hydraulic control one-way valve (13), the inserting valve deck (12) are arranged two
Lead on inserted valve (11) and close the spring cavity (C) of two-way plug-in valve (11), the leading hydraulic control one-way valve (13) is mounted on
It inserts on valve deck (12), two-way plug-in valve 11 also includes spool (111), it is characterised in that:
It also include throttle orifice (T), the oil pocket (B) or oil pocket (A) of the two-way plug-in valve (11) are after throttle orifice (T)
It is connected to spring cavity (C)；
The cut-off hydraulic fluid port of the leading hydraulic control one-way valve (13) is connected to the spring cavity (C) of two-way plug-in valve (11), simultaneously
Pilot control opening (X) and guide's oil return opening (Y) are drawn to the outer surface for inserting valve deck (12).
2. two-way plug-in type pilot controlled check valve as described in claim 1, it is characterised in that: throttle orifice (T) can be set in valve
On core (111), it is connected to oil pocket (B) or oil pocket (A) directly by the throttle orifice (T) on spool (111) with spring cavity (C).
3. two-way plug-in type pilot controlled check valve as described in claim 1, it is characterised in that: throttle orifice (T) also can be set
Except two-way plug-in valve (11), oil pocket (B) or oil pocket (A) are connected by throttle orifice (T) and inserting valve deck (12) and spring cavity (C)
It is logical.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910118994.XA CN109611404A (en) | 2019-02-18 | 2019-02-18 | A kind of two-way plug-in type pilot controlled check valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910118994.XA CN109611404A (en) | 2019-02-18 | 2019-02-18 | A kind of two-way plug-in type pilot controlled check valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109611404A true CN109611404A (en) | 2019-04-12 |
Family
ID=66019764
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910118994.XA Pending CN109611404A (en) | 2019-02-18 | 2019-02-18 | A kind of two-way plug-in type pilot controlled check valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109611404A (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20110297251A1 (en) * | 2009-02-10 | 2011-12-08 | Renhao Huang | Combined hydraulic control valve |
| CN104564871A (en) * | 2015-01-15 | 2015-04-29 | 武汉船用机械有限责任公司 | Low-pressure-loss overlapped type hydraulic one-way valve |
| CN205291516U (en) * | 2015-12-15 | 2016-06-08 | 宁波海天华远机械有限公司 | Compound die hydraulic circuit who accords with national security standard |
-
2019
- 2019-02-18 CN CN201910118994.XA patent/CN109611404A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20110297251A1 (en) * | 2009-02-10 | 2011-12-08 | Renhao Huang | Combined hydraulic control valve |
| CN104564871A (en) * | 2015-01-15 | 2015-04-29 | 武汉船用机械有限责任公司 | Low-pressure-loss overlapped type hydraulic one-way valve |
| CN205291516U (en) * | 2015-12-15 | 2016-06-08 | 宁波海天华远机械有限公司 | Compound die hydraulic circuit who accords with national security standard |
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Application publication date: 20190412 |