CN202501078U

CN202501078U - Pneumatic coaxial valve

Info

Publication number: CN202501078U
Application number: CN2012200842684U
Authority: CN
Inventors: 高永刚; 武文斌
Original assignee: DALIAN REALLY TECHNOLOGY Co Ltd
Current assignee: DALIAN REALLY TECHNOLOGY Co Ltd
Priority date: 2012-03-08
Filing date: 2012-03-08
Publication date: 2012-10-24
Anticipated expiration: 2022-03-08

Abstract

The utility model relates to a coaxial valve and particularly relates to a pneumatic coaxial valve which comprises a left end cover, a right end cover, liquid seal covers, a cylinder barrel, a piston, a piston rod, a valve seat body, seal rings, a rectangular spiral spring and an electromagnetic valve, wherein the inner wall surface and the outer wall surface of the piston are both provided with the seal rings; the piston and the piston rod are assembled together and are fixed together through a retainer ring; the piston and the piston rod are integrally installed in the cylinder barrel; the inner wall surface and the outer wall surface of each liquid seal cover are provided with the other seal rings; the left and right sets of liquid seal covers are installed in the cylinder barrel, and the piston rod is sleeved in the liquid seal covers; the rectangular spiral spring is also sleeved on the piston rod; the left end cover is installed on the outer side of the liquid seal cover on the left side; the valve seat body is installed on the outer side of the liquid seal cover on the right side; the seal rings, a main seal and a pressing cover are fixed on a valve body through bolts; the right end cover is installed on the outer side of the valve seat body; the left end cover, the cylinder barrel and the right cylinder cover are fixed with one another through bolts; and an adapter plate and the electromagnetic valve are fixed on the cylinder barrel through screws. The pneumatic coaxial valve provided by the utility model has few seal points and long service life, and is simple to operate, tiny in flow resistance, small in size, light in weight and easy to manufacture.

Description

Pneumatic coaxial valve

Technical field:

The utility model relates to valve, particularly the control valve of valve and final controlling element one.

Background technique:

Currently in lathe cooling and cleaning system, generally adopt solenoid valve, its advantage is that brand is numerous, low price, and control makes things convenient for.Its shortcoming is that fluid pressure acts directly on the spool, has increased spool action resistance; Another one shortcoming diaphragm structure, when containing impurity in the cooling liquid, valve can not cut out fully or can not open fully, and long-term work cutting impurity also can scratch diaphragm, influences the normal operation of equipment, and rate of fault increases the equipment user cost than higher.

Summary of the invention:

The purpose of the utility model is to overcome above-mentioned not enough problem, and a kind of pneumatic coaxial valve is provided, and is closing and opening the equal retainer shaft of any state to pressure balance, and the sealing surface life-span is long, and the medium circulation is even, opening and closing fast, and volume is little, and is in light weight.

The purpose of the utility model is achieved in that pneumatic coaxial valve, and main body comprises left and right sides end cap, sealing liquid lid, cylinder barrel, piston, piston rod (axis), valve seat body, seal ring, rectangular coil spring and solenoid valve; On the inside and outside wall of piston seal ring is housed all, piston and piston rod are assembled, and are fixed together through back-up ring; Piston and piston rod integral body are packed in the cylinder barrel, and the inside and outside wall of sealing liquid lid is provided with seal ring, about pack into cylinder barrel and be inserted in piston rod of each cover sealing liquid lid; Also be set with the rectangular coil spring on the piston rod, left end cap is equipped with in the left side sealing liquid lid outside, and the right side sealing liquid lid outside is the valve seat body; Seal ring, primary seal and gland are through being bolted on the valve body body; The valve seat body outside is equipped with right end cap, and left end cap, cylinder barrel and right cylinder cap are through bolt, and pinboard and solenoid valve pass through screw on cylinder barrel.

Said sealing liquid is placed on the seal ring employing multi-lip seal structure that internal face is installed.

The axis direction of said piston rod is consistent with the direction of media flow.

The utility model is according to fluid mechanics principle; Utilize pipeline inner fluid self pressure to reach the pipeline fluid pressure that the complete equilibrium axis is born, axis (piston rod), cylinder cap, sealing liquid lid, cylinder barrel, piston, end cover, rectangular coil spring, solenoid valve are installed at valve.Pressure medium acts in the axis; When closing; The head end that the pressure medium that axis bore acts on axis also bears pressure action of medium on the inclined-plane of shaft end simultaneously; Two power are cancelled each other, and axis is in state of equilibrium, and valve switch promotes axis (piston rod) motion through the solenoid valve switching-over and realizes.

The utility model high pressure circulation medium adopts same seal ring with the control switching-over with source of the gas, and the multi-lip seal structure of this uniqueness realizes two way sealed and reliable the isolation simultaneously.Sword type valve core structure not only increases the sealing effect with valve seat, and does not have excess area to expose to the open air at second side, even second side pressure is higher than first side, valve also can safety shutdown.The complete symmetric design of valve, solenoid valve, cylinder barrel can commutate and install and the change valve function; Left and right sides sealing liquid lid structure is identical, guarantees three kinds of functions such as the inner spring dismounting of same valve utilization can realize often opening, normally closed and dibit maintenance, the kind that has reduced valve with use flexibility.The unique design of valve seat, the reliable sealing of assurance valve guarantees the working life that sealing material is longer simultaneously.Compared with prior art, the utlity model has two-in-one function, cost performance is higher, and the switch of two function: a of single product combination, pipeline is controlled b, controlled the action of this switch; A large amount of installing spaces of saving; Save the installment work time; Safety, reliable, a plurality of connection interfaces when having reduced traditional cylinder brake valve and installing keep in repair simpler; Be applicable to high pressure, gaseous state, liquid state, gel, have under particle high pollution and the corrosivity condition and use.

Description of drawings:

Fig. 1 is the utility model structural representation.

Fig. 2 is the utility model gland end view drawing.

Embodiment:

Pneumatic coaxial valve as shown in Figure 1, main body comprise left and right sides end cap, sealing liquid lid, cylinder barrel, piston, piston rod (axis), valve seat body, seal ring, rectangular coil spring and solenoid valve; Pack into the jointly inside and outside wall of piston 10 of seal ring 9, seal ring 11, piston and piston rod 3 assemblings, and be fixed together through back-up ring 7; The integral body cylinder barrel 16 of packing into, the inside and outside wall of sealing liquid lid 5 is separately installed with three seals circle 4, seal ring 6 and seal ring 8, about pack into cylinder barrel and be inserted in piston rod 3 of each cover sealing liquid lid; Rectangular coil spring 12 is sleeved on the piston rod 3; Left end cap 1 is installed in the sealing liquid lid outside, left side, and seal ring 21, primary seal 22 and gland 20 are packed on the valve seat body 17 in order, and is fastened on the valve seat body 17 with the screw that coats fastening glue in advance 19; The valve seat body is packed between right end cap 18 and the right side sealing liquid lid; Left end cap 1,

cylinder barrel

16,4 bolts 2 of right cylinder cap 18 usefulness link together, and fastening after the levelling, pinboard 15 and solenoid valve 14 are fixed on the cylinder barrel 16 through screw 14.The direction of media flow is consistent with the axis direction of piston rod 3, and seal ring 4 adopts the multi-lip seal structure, realizes two way sealed and reliable the isolation simultaneously, the complete symmetric design of valve, and solenoid valve 14, cylinder barrel 16 can commutate installation and change valve function; It is identical that left and right sides sealing liquid covers 5 structures, guarantees three kinds of functions such as inner square threaded form spring 12 dismounting of same valve utilization can realize often opening, normally closed and dibit maintenance, the kind that has reduced valve with use flexibility.Valve seat such as Fig. 2, the reliable sealing of assurance valve guarantees the working life that sealing material is longer simultaneously.

Claims

1. pneumatic coaxial valve, main body comprise left and right sides end cap, sealing liquid lid, cylinder barrel, piston, piston rod, valve seat body, seal ring, rectangular coil spring and solenoid valve; It is characterized in that: on the inside and outside wall of piston seal ring is housed all, piston and piston rod are assembled, and are fixed together through back-up ring; Piston and piston rod integral body are packed in the cylinder barrel, and the inside and outside wall of sealing liquid lid is provided with seal ring, about pack into cylinder barrel and be inserted in piston rod of each cover sealing liquid lid; Also be set with the rectangular coil spring on the piston rod, left end cap is equipped with in the left side sealing liquid lid outside, and the right side sealing liquid lid outside is the valve seat body; Seal ring, primary seal and gland are through being bolted on the valve body body; The valve seat body outside is equipped with right end cap, and left end cap, cylinder barrel and right cylinder cap are through bolt, and pinboard and solenoid valve pass through screw on cylinder barrel.

2. pneumatic coaxial valve according to claim 1 is characterized in that: said sealing liquid is placed on the seal ring employing multi-lip seal structure that internal face is installed.

3. pneumatic coaxial valve according to claim 1 is characterized in that: the axis direction of said piston rod is consistent with the direction of media flow.