CN202561222U

CN202561222U - Hydraulic-control one-way valve with controllable-size valve port

Info

Publication number: CN202561222U
Application number: CN201220235109XU
Authority: CN
Inventors: 郑洋洋; 张新华; 徐灯; 李自漾; 陈斌; 钟万里; 王鸿云; 荆宝德
Original assignee: Zhejiang Normal University CJNU
Current assignee: Zhejiang Normal University CJNU
Priority date: 2012-05-15
Filing date: 2012-05-15
Publication date: 2012-11-28
Anticipated expiration: 2022-05-15

Abstract

The utility model discloses a hydraulic-control one-way valve with a controllable-size valve port. The hydraulic-control one-way valve comprises a valve body. An end cap is arranged at one end of the valve body, a big piston matching with a first valve hole is arranged in the first valve hole, an oil control port communicated with the first valve hole is arranged on the valve body, a push rod is arranged in a second valve hole, a first oil port communicated with the second valve hole is arranged on the valve body, a working cylinder is arranged in a third valve hole, a second oil port communicated with the outside is arranged between the second valve hole and the third valve hole, a left end of the push rod supports a right end of the big piston, the diameter of the push rod on the right side of the first oil port is smaller than the diameter of the second valve hole, the maximum diameter of the left part of the working cylinder is larger than the diameter of the second valve hole, a left end of the working cylinder supports against a right end of the push rod, and a magnetorheological fluid device for hindering movement of the working cylinder after being powered on is arranged in the third valve hole. The hydraulic-control one-way valve with the controllable-size valve port has the advantages that currents of different magnitude can enable magnetorheological fluid to produce different damping force, and the hydraulic-control one-way valve is simple and convenient to control and easy to operate.

Description

A kind of Pilot operated check valve of valve port controlled amount

Technical field

The utility model relates to a kind of Pilot operated check valve of valve port controlled amount.

Background technique

Common Pilot operated check valve both can be used as one-way valve and had used, and also can be used as " two-way valve " and used.But it is in order to regulate the valve port size, realize regulating the flow size then, often need import different pressure oil, and be not easy to regulate, and cumbersome according to the size of such method valve port at the Pilot operated check valve control end.

The model utility content

The purpose of the utility model is to provide a kind of Pilot operated check valve of valve port controlled amount, and can effectively solve existing Pilot operated check valve adjusting valve port size needs the different pressure oil of input, regulates loaded down with trivial details problem.

In order to solve the problems of the technologies described above, the utility model is realized through following technological scheme: a kind of Pilot operated check valve of valve port controlled amount comprises valve body; The end of said valve body is provided with end cap, is provided with first valve opening, second valve opening, the 3rd valve opening in the said valve body from left to right successively, is provided with the big piston suitable with it in said first valve opening; Have the control hydraulic fluid port that communicates with first valve opening on the said valve body; Be provided with push rod in said second valve opening, have first hydraulic fluid port that communicates with second valve opening on the said valve body, be provided with working cylinder in said the 3rd valve opening; Have between said second valve opening and the 3rd valve opening and extraneous second hydraulic fluid port that communicates; The left end of said push rod withstands the right-hand member of big piston, and the rod diameter on the said first hydraulic fluid port right side is less than the second valve opening diameter, and the left part maximum diameter of said working cylinder is greater than the second valve opening diameter; The left end of said working cylinder withstands the right-hand member of push rod, is provided with the magnetic flow liquid device that the energising back hinders the working cylinder motion in said the 3rd valve opening.

Preferably; Said magnetic flow liquid device comprises piston, coil, magnetic flow liquid, is provided with active chamber in the right-hand member of said working cylinder, and said the 3rd valve opening right-hand member is fixed with a piston rod that stretches in the active chamber; The left end of said active chamber inner piston rod is fixed with the piston that cross section is an I-shaped; Be wound with coil on the said piston, be full of magnetic flow liquid in the said active chamber, piston is divided into left and right sides two-part with active chamber; Leave the gap that supplies magnetic flow liquid to flow between said piston and the active chamber sidewall, be provided with elastic position rebounding device between the left side of said piston and active chamber; Setting simple in structure is the magnetic flow liquid device easily.

Preferably, said elastic position rebounding device is a spring; Easy for installation, use reliable.

Preferably, be provided with isolation layer between said coil and the piston, the outside of said coil also is provided with isolation layer; Prevent electric leakage.

Preferably, the left part of said working cylinder is conical, and the top of said working cylinder left part is stretched on the right side that withstands on push rod in second valve opening

Preferably, be connected through bolt between said valve body and the end cap; Be convenient to dismounting.

Compared with prior art; The utility model has the advantages that: produce the thrust that damping force adds that the elastic force of elastic position rebounding device comes balanced hydraulic oil to produce through the magnetic flow liquid device; Different size of current can make magnetic flow liquid produce different damping forces, control simple and convenient, easy operating.

Description of drawings

Fig. 1 is the structural representation of the Pilot operated check valve of a kind of valve port controlled amount of the utility model.

Embodiment

Consult the embodiment of Fig. 1 for the Pilot operated check valve of a kind of valve port controlled amount of the utility model, a kind of Pilot operated check valve of valve port controlled amount comprises valve body 2; The end of said valve body 2 is provided with end cap 1, is provided with first valve opening 11 that is in same axis, second valve opening 12, the 3rd valve opening 13 in the said valve body 2 from left to right successively, is provided with the big piston suitable with it 3 in said first valve opening 11; Have the control hydraulic fluid port 21 that communicates with first valve opening 11 on the said valve body 2, be provided with push rod 4 in said second valve opening 12, have first hydraulic fluid port 22 that communicates with second valve opening 12 on the said valve body 2; Be provided with working cylinder 5 in said the 3rd valve opening 13, have between said second valve opening 12 and the 3rd valve opening 13 and extraneous second hydraulic fluid port 23 that communicates, the left end of said push rod 4 withstands the right-hand member of big piston 3; Push rod 4 diameters on said first hydraulic fluid port 22 right sides are less than second valve opening, 12 diameters; The left part maximum diameter of said working cylinder 5 is greater than second valve opening, 12 diameters, and the left end of said working cylinder 5 withstands the right-hand member of push rod 4, is provided with the magnetic flow liquid device that the energising back hinders working cylinder 5 motions in said the 3rd valve opening 13; Said magnetic flow liquid device comprises piston 7, coil 9, magnetic flow liquid; Be provided with active chamber 14 in the right-hand member of said working cylinder 5, said the 3rd valve opening 13 right-hand members are fixed with a piston rod 8 that stretches in the active chamber 14, and the left end of said active chamber 14 inner piston rods 8 is fixed with the piston 7 that cross section is an I-shaped; Be wound with coil 9 on the said piston 7; Be full of magnetic flow liquid in the said active chamber 14, piston 7 is divided into left and right sides two-part with active chamber 14, leaves the gap that supplies magnetic flow liquid to flow between said piston 7 and active chamber 14 sidewalls; Be provided with elastic position rebounding device 6 between the left side of said piston 7 and active chamber 14; Said elastic position rebounding device 6 is a spring, is provided with isolation layer between said coil 9 and the piston 7, and the outside of said coil 9 also is provided with isolation layer., the left part of said working cylinder 5 is conical, the top of said working cylinder 5 left parts is stretched in second valve opening 12 and is withstood on the right side of push rod 4, is connected through bolt 10 between said valve body 2 and the end cap 1.

Coil 9 joins through lighting outlet and external circuitry; When the external circuitry no electric circuit, coil 9 does not produce magnetic field, and magnetic flow liquid does not almost have the Clearance Flow between the sidewall that passes through piston 7 and active chamber 14 of damping force; Just be equivalent to common Pilot operated check valve this moment; Promptly when control hydraulic fluid port 21 different high pressure oils, oil can only get into from first hydraulic fluid port 22, flows out from second hydraulic fluid port 23; When control hydraulic fluid port 21 had high pressure oil, high pressure oil promoted big piston 3 and moves right, and big piston 3 promotes push rod 4 again and moves right; Push rod 4 cylinder body 5 that pushes the work forward again moves right; Because the pressure of high pressure oil is much larger than the elastic force of spring, the valve port between push rod 4 and the working cylinder 5 is opened fully at this moment, and oil both can get into second hydraulic fluid port 23 from first hydraulic fluid port 22 and go out; Also can get into first hydraulic fluid port 22 and go out the effect of existing " two-way valve " from second hydraulic fluid port 23.These two kinds of working staties are that common Pilot operated check valve has, and the utility model has this function equally.

When external circuitry energising, and during the logical high pressure oil of control hydraulic fluid port 21, high pressure oil promotes big piston 3 and moves right; Big piston 3 promotes push rod 4 again and moves right, and push rod 4 cylinder body 5 that pushes the work forward again moves right, and this moment, piston 7 was fixed; And working cylinder 5 makes active chamber 14 and its generation relative movement, and the magnetic flow liquid generation that then can push in the active chamber 14 is flowed, because coil 9 has electricity to produce magnetic field; Sclerosis takes place the magnetic flow liquid of this moment becomes the viscosity plastomer, cause working cylinder 5 dampings to increase, and excitation is strong more; Damping is big more, and the pressure P=spring force F+ magnetorheological fluid damp power f of high pressure oil needs only the size of current of regulating external circuitry at this moment; Just can regulate the excitation size, regulate the size of damping force then, just can make working cylinder 5 location fast through regulating size of current; Thereby quantitatively regulate the valve port size, can be similar to Proportional valve.

The above is merely the specific embodiment of the utility model, but the technical characteristics of the utility model is not limited thereto, and any those skilled in the art is in the field of the utility model, and the variation of being done or modify all is encompassed among the claim of the utility model.

Claims

1. the Pilot operated check valve of a valve port controlled amount; Comprise valve body (2); The end of said valve body (2) is provided with end cap (1), it is characterized in that: be provided with first valve opening (11), second valve opening (12), the 3rd valve opening (13) in the said valve body (2) from left to right successively, be provided with the big piston suitable with it (3) in said first valve opening (11); Have the control hydraulic fluid port (21) that communicates with first valve opening (11) on the said valve body (2); Be provided with push rod (4) in said second valve opening (12), have first hydraulic fluid port (22) that communicates with second valve opening (12) on the said valve body (2), be provided with working cylinder (5) in said the 3rd valve opening (13); Have between said second valve opening (12) and the 3rd valve opening (13) and extraneous second hydraulic fluid port (23) that communicates; The left end of said push rod (4) withstands the right-hand member of big piston (3), and push rod (4) diameter on said first hydraulic fluid port (22) right side is less than second valve opening (12) diameter, and the left part maximum diameter of said working cylinder (5) is greater than second valve opening (12) diameter; The left end of said working cylinder (5) withstands the right-hand member of push rod (4), is provided with the magnetic flow liquid device that the energising back hinders working cylinder (5) motion in said the 3rd valve opening (13).

2. the Pilot operated check valve of a kind of valve port controlled amount as claimed in claim 1; It is characterized in that: said magnetic flow liquid device comprises piston (7), coil (9), magnetic flow liquid; Be provided with active chamber (14) in the right-hand member of said working cylinder (5); Said the 3rd valve opening (13) right-hand member is fixed with a piston rod (8) that stretches in the active chamber (14), and the left end of said active chamber (14) inner piston rod (8) is fixed with the piston that cross section is an I-shaped (7), is wound with coil (9) on the said piston (7); Said active chamber is full of magnetic flow liquid in (14); Piston (7) is divided into left and right sides two-part with active chamber (14), leaves the gap that supplies magnetic flow liquid to flow between said piston (7) and active chamber (14) sidewall, is provided with elastic position rebounding device (6) between the left side of said piston (7) and active chamber (14).

3. the Pilot operated check valve of a kind of valve port controlled amount as claimed in claim 2 is characterized in that: said elastic position rebounding device (6) is a spring.

4. the Pilot operated check valve of a kind of valve port controlled amount as claimed in claim 2 is characterized in that: be provided with isolation layer between said coil (9) and the piston (7), the outside of said coil (9) also is provided with isolation layer.

5. the Pilot operated check valve of a kind of valve port controlled amount as claimed in claim 1 is characterized in that: the left part of said working cylinder (5) is for conical, and the top of said working cylinder (5) left part is stretched in second valve opening (12) and withstood on the right side of push rod (4).

6. the Pilot operated check valve of a kind of valve port controlled amount as claimed in claim 1 is characterized in that: be connected through bolt (10) between said valve body (2) and the end cap (1).