CN103511380B

CN103511380B - A kind of high-pressure three-position valve

Info

Publication number: CN103511380B
Application number: CN201310457366.7A
Authority: CN
Inventors: 胡德成; 郑峰
Original assignee: Individual
Current assignee: Individual
Priority date: 2013-09-30
Filing date: 2013-09-30
Publication date: 2017-05-31
Anticipated expiration: 2033-09-30
Also published as: CN103511380A

Abstract

A kind of high-pressure three-position valve, by valve body, valve pocket, valve rod, return seat, spring, spring base, connecting rod, piston, guide's headstock, pilot head assembly, coil and constitute, described valve inner center is placed with valve pocket, between sealed with sealing ring, two ends are positioned with packing ring, and the packing ring is located in valve body；The valve pocket inside center is placed with a valve rod that can be moved back and forth in valve pocket；The bottom of described valve body offers the first operating air pressure mouthful, the second operating air pressure mouth, control air pressure mouthful and exhaust outlet successively, and the top of valve body offers two blow vents, working chamber is provided with above two blow vents；Beneficial effects of the present invention are：1）Work gas circuit is separated with control gas circuit；2）The sealing of work gas circuit is using metal gap sealing；3）The function of one valve four；4）Compact conformation, small volume is easy to combination；5）Long lifespan, is quick on the draw, and commutation action is fast.

Description

A kind of high-pressure three-position valve

Technical field

The present invention relates to solenoid valve market, more particularly to a kind of high-pressure three-position valve.

Background technology

Existing high-pressure three-position valve is combined by three bi-bit bi-pass diaphragm electromagnetic valves, the work gas during design Road is not separated by with control gas circuit, also there is volume greatly, and slow motion, the defect that the life-span is not grown are reacted in inconvenience combination.

The content of the invention

It is an object of the invention to overcome the shortcomings of that prior art is present, and a kind of compact conformation, small volume are provided, are easy to The high-pressure three-position valve of combination.

The purpose of the present invention is completed by following technical solution, and it is by valve body, valve pocket, valve rod, recurrence seat, bullet Spring, spring base, connecting rod, piston, guide's headstock, pilot head assembly, coil composition, described valve inner center is placed with valve Set, is sealed between valve body and valve pocket with sealing ring, and two ends are positioned with packing ring, and the packing ring is located in valve body；The valve pocket inside center It is placed with a valve rod that can be moved back and forth in valve pocket；The bottom of described valve body offers the first operating air pressure mouthful, the successively Two operating air pressures mouthful, control air pressure mouthful and exhaust outlet, the top of valve body offers two blow vents, in the upper of two blow vents Side is provided with working chamber.

Preferably, described valve body two ends are respectively provided with guide's headstock, piston, pilot head assembly and coil, wherein valve The B ends of body are also equipped with returning seat, spring, spring base, connecting rod；Described coil is fixed on pilot head assembly, and pilot head is total Into being fixed on guide's headstock；The guide's headstock set on the A ends of valve body is fixed on a left side for valve body by cross recessed countersunk head sscrew Side, the guide's headstock on B ends is fixed on the right side of valve body, guide's headstock, recurrence with recurrence seat by cross recessed countersunk head sscrew The YX sealing ring with piston space being provided with for seal is respectively equipped with O-ring, guide's headstock between seat and valve body.

Preferably, piston and valve lever clearance floating connection, the piston clearance floating connection on B ends on described A ends There is connecting rod, connecting rod is connected with threaded stem；It is cased with being provided with bullet between two pieces of corresponding spring bases, the spring base in connecting rod Spring, and fixed with nut, one of them of the spring base is limited in recurrence seat end, and another is limited in the packing ring end of valve body.

Beneficial effects of the present invention are：1st, work gas circuit and control gas circuit are separated；2nd, the sealing of work gas circuit is using between metal Gap is sealed；3rd, the function of a valve four（That is the first operating air pressure, the second operating air pressure, envelope gas, exhaust）；4th, compact conformation, small volume, It is easy to combination；5th, long lifespan, is quick on the draw, and commutation action is fast.

Brief description of the drawings

Fig. 1 is structural representation of the invention.

Label in accompanying drawing is respectively：1st, coil；2nd, terminal box；3rd, pilot head assembly；4th, guide's headstock；5th, YX sealings Circle；6th, piston；7th, O-ring；8th, packing ring；9th, valve pocket；10th, sealing ring；11st, valve rod；12nd, valve body；13rd, working chamber；14th, return Seat；15th, spring；16th, spring base；17th, nut；18th, connecting rod；19th, cross recessed countersunk head sscrew；20th, blow vent；121st, the first work Make air pressure mouthful；122nd, the second operating air pressure mouthful；123rd, control air pressure mouthful；124th, exhaust outlet.

Specific embodiment

Detailed introduction is done to the present invention below in conjunction with accompanying drawing：As shown in Figure 1, the present invention by valve body 12, valve pocket 9, Valve rod 11, recurrence seat 14, spring 15, spring base 16, connecting rod 18, piston 6, guide's headstock 4, pilot head assembly 3,1 group of coil Into the described inside center of valve body 12 is placed with valve pocket 9, is sealed with sealing ring 10 between valve body 12 and valve pocket 9, two ends packing ring 8 positioning, the packing ring 8 is located in valve body 12；The inside center of valve pocket 9 is placed with a valve rod 11 that can be moved back and forth in valve pocket 9； The bottom of described valve body 12 offers the first operating air pressure mouthful the 121, second operating air pressure mouthful 122, control air pressure mouthful 123 successively And exhaust outlet 124, the top of valve body offers two blow vents 20, the top of two blow vents 20 is provided with working chamber 13。

The described two ends of valve body 12 are respectively provided with guide's headstock 4, piston 6, pilot head assembly 3 and coil 1, wherein B ends also Equipped with recurrence seat 14, spring 15, spring base 16, connecting rod 18；Described coil 1 is fixed on pilot head assembly 3, and pilot head is total It is fixed on guide's headstock 4 into 3；Guide's headstock 4 on A ends is fixed on the left side of valve body 12, B by cross recessed countersunk head sscrew 19 Guide's headstock 4 on end is fixed on the right side of valve body 12 with seat 14 is returned by cross recessed countersunk head sscrew 19, guide's headstock 4, Return the YX sealing rings 5 for being respectively equipped between seat 14 and valve body 12 in O-ring 7, guide's headstock 4 and being provided with and between piston 6 for sealing. Piston 6 and the gap floating connection of valve rod 11 on described A ends, the gap floating connection of piston 6 on B ends have connecting rod 18, even Extension bar 18 is threadedly coupled with valve rod 11；Two pieces of corresponding spring bases 16 are cased with connecting rod 18, spring is provided between the spring base 16 15, and fixed with nut 17, one of them of the spring base 16 is limited in recurrence seat 14 end, and another is limited in the pad of valve body 12 Enclose 8 ends.

Operation principle of the invention is：

The coil 1 at A ends is powered, and the pilot head assembly 3 at A ends works, and control air pressure mouthful 123 promotes A by controlling air pressure The piston 6 at end, the piston 6 at A ends promotes valve rod 11, exhaust outlet 124 to close, and working chamber 13 obtains the first operating air pressure.

The coil 1 at B ends is powered, and the pilot head assembly 3 at B ends works, and control air pressure mouthful 123 promotes B by controlling air pressure The piston 6 at end, the piston 6 at B ends promotes valve rod 11, exhaust outlet 124 to close, and working chamber 13 obtains the second operating air pressure.

The no power of coil 1 at A, B end, the pilot head assembly 3 at A, B end does not work, and during valve rod 11 passes through spring force again, seals First operating air pressure mouthful the 121, second operating air pressure mouthful 122, exhaust outlet 124 is vented.

It is understood that it will be understood by those skilled in the art that being subject to technical scheme and inventive concept The protection domain of appended claims of the invention should all be belonged to replacement or change.

Claims

1. a kind of high-pressure three-position valve, including valve body（12）, valve pocket（9）, valve rod（11）, return seat（14）, spring（15）, spring base （16）, connecting rod（18）, piston（6）, guide's headstock（4）, pilot head assembly（3）, coil（1）, it is characterised in that：Described valve Body（12）Inside center is placed with valve pocket（9）, valve body（12）With valve pocket（9）Between use sealing ring（10）Sealing, two ends packing ring （8）Positioning, the packing ring（8）Positioned at valve body（12）It is interior；The valve pocket（9）Inside center is placed with one can be in valve pocket（9）Inside back and forth The valve rod of motion（11）；The valve body（12）Bottom offer the first operating air pressure mouthful successively（121）, the second operating air pressure mouthful （122）, control air pressure mouthful（123）And exhaust outlet（124）, the top of valve body offers two blow vents（20）, it is logical at this two Gas port（20）Top be provided with working chamber（13）；

Described valve body（12）Two ends are respectively provided with guide's headstock（4）, piston（6）, pilot head assembly（3）And coil（1）, wherein Valve body（12）B ends be also equipped with return seat（14）, spring（15）, spring base（16）, connecting rod（18）；Described coil（1）Gu Due to pilot head assembly（3）On, pilot head assembly（3）It is fixed on guide's headstock（4）On；Valve body（12）A ends on set elder generation Top guide seat（4）By cross recessed countersunk head sscrew（19）It is fixed on valve body（12）Left side, the guide's headstock on B ends（4）With recurrence Seat（14）By cross recessed countersunk head sscrew（19）It is fixed on valve body（12）Right side, guide's headstock（4）, return seat（14）With valve Body（12）Between be respectively equipped with O type circles（7）, guide's headstock（4）Interior and piston（6）Between be provided with YX sealing rings for sealing（5）；

The coil at A ends（1）It is powered, the pilot head assembly at A ends（3）Work, control air pressure mouthful（123）Pushed away by controlling air pressure The piston at dynamic A ends（6）, the piston (6) at A ends promotes valve rod (11), exhaust outlet (124) to close, and working chamber (13) obtains the One operating air pressure；

The coil at B ends（1）It is powered, the pilot head assembly at B ends（3）Work, control air pressure mouthful（123）Pushed away by controlling air pressure The piston at dynamic B ends（6）, the piston at B ends（6）Promote valve rod（11）, exhaust outlet（124）Close, working chamber（13）Obtain second Operating air pressure；

The coil at A, B end（1）No power, the pilot head assembly at A, B end（3）Do not work, valve rod（11）In being answered by spring force, Seal the first operating air pressure mouthful（121）, the second operating air pressure mouthful（122）, exhaust outlet（124）Exhaust.

2. high-pressure three-position valve according to claim 1, it is characterised in that：Piston on described A ends（6）With valve rod （11）Gap floating connection, the piston on B ends（6）Gap floating connection has connecting rod（18）, connecting rod（18）With valve rod（11） Threaded connection；Connecting rod（18）On be cased with two pieces of corresponding spring bases（16）, the spring base（16）Between be provided with spring（15）, it is used in combination Nut（17）It is fixed, the spring base（16）One of them be limited in recurrence seat（14）End, another is limited in valve body（12）'s Packing ring（8）End.