CN2493785Y - Program controlled pneuamtic corrugated pipe ball core valve - Google Patents

Abstract

The utility model provides a program controlled pneumatic corrugated pipe ball core valve suitable for automation operation system consisting of a corrugated pipe ball core valve body, a pneumatic actuating mechanism of the valve and a program control system. The pneumatic actuating mechanism is to connect a diaphragm type cylinder block on the upper part of the corrugated pipe ball core valve body and a diaphragm unit separates the cylinder block into an upper cavity and a lower cavity. The compressed gas controlled by the program control system enters into the upper cavity and lower cavity of the cylinder to promote the diaphragm unit to drive a valve core unit move upwards or downwards to lead the ball surface valve flack of the valve opening and closing to reach the goal of automatic controlling the corrugated pipe ball core valve. The valve has the advantages of reliable motion, rapid response and reliable seal.

Description

Program control pneumatic bellows ball core valve

The utility model relates to a kind of valve, especially a kind of favorable sealing property, and can realize the program control pneumatic bellows ball core valve door of automatic on-off.

At present, automatic valve all is widely used in many devices of industrial enterprise.Along with science and technology, the automatic technology develop rapidly, automatic valve has played very important effect.With regard to automatic valve, electronic, electromagnetism is arranged, surge, various ways such as pneumatic and combined.The inventor once filed an application to Patent Office of the People's Republic of China on March 1st, 1993, and obtain the authorization on April 2nd, 1994, the patent No. is to have proposed a kind of bellows ball core valve that solves the inside and outside leakage problem of conventional valves in the patent document of ZL932041558, it is made up of critical pieces such as valve body, middle body, mangetic core assembly, valve seat, handwheels, it adopts bellows to replace the filler barrier fluid of conventional valve, does not reveal along valve rod; Adopt high-precision spheroid free to rotate to replace the flap in the conventional valve to open and close valve seat simultaneously, sealing effect is splendid, and the inside and outside leakage problem of valve is all solved.This patented technology has obtained using widely, and still, this patent only provides a kind of manually operated mode that opens and closes, and along with the exploitation in market, this single operator scheme can not satisfy the demand in market.

Owing to the special unsteady sphere flap structure of bellows ball core valve door, be different from the plane or the valve flap with conical of conventional valves, get rid of the possibility of leading type principle work on the structure, but needed to adopt big power source and the corresponding structure of a kind of driving force to realize.

The purpose of this utility model will propose a kind of modernized industrial system realization technological operation centralized control that is applicable to exactly, with pressurized gas or other nuisanceless gas is power source, by programmed control system, can realize bellows ball core valve door automatic on-off, favorable sealing property.

The technical solution of the utility model is achieved in that the valve body of this valve by the bellows ball core valve, the pneumatic actuator and the program control of spool group and valve are partly formed, it is characterized in that described pneumatic bellows ball core valve door is to connect a diaphragm type cylinder on bellows ball core valve body top, the diaphragm group is equipped with on spool group top, on the diaphragm group is divided into cylinder block, following two chambeies, communicating with the interface of source of the gas commutator respectively becomes the pneumatic actuator that drives the action of spool group, described valve programmed control system is then by programming controller, the source of the gas commutator, pneumatic actuator and gas return path are formed, the pressurized gas of programming controller control or other nuisanceless gas are by the epicoele or the cavity of resorption that are entered cylinder through the source of the gas commutator by gas return path, promoting diaphragm group driving spool group moves up or down, the unsteady sphere flap of valve is opened and closed, reach the effect of automatic control bellows ball core valve door.It is convenient that this valve has source of the gas, reliable in action, and driving force is big, responds fast, seals advantages such as reliable.

The contrast drawings and Examples are described further this model utility below:

Fig. 1 is the structural representation of program control pneumatic bellows ball core valve;

Fig. 2 is program control pneumatic bellows ball core valve program control part principle schematic.

As shown in Figure 1, the main structure of the related program control pneumatic bellows ball core valve of the utility model is made up of valve seat 1, valve body 2, sealing gasket 3, middle body 4, spool group 5, cylinder block 6, diaphragm group 7, cylinder head 8, gas return path joint 9, float sphere flap 10, setscrew nut 11, manual-lock spare 12 etc.Wherein spool group 5 is assemblied in valve body 2 and the middle body 4, and it realizes the switching to valve seat 1 by the lifting moving of spool group 5 relative valve bodies 2.In former bellows ball core valve patent ZL932041558, the lifting moving of spool group 5 relative valve bodies 2 is only realized by artificial rotation manual closure member 12.At program control pneumatic bellows ball core valve described in the utility model is to connect a diaphragm type cylinder body 6 on spool group 5 tops of bellows ball core valve, and diaphragm group 7 is divided into upper and lower two chambeies with cylinder block 6.The lifting that opens and closes by spool group 5 of valve determines as seen from Figure 1, the lifting action of spool group 5 is by the mobile status decision that is assemblied in the diaphragm group 7 on the spool group 5, when cylinder block 6 interior diaphragm groups 7 are in lower dead centre, valve is a closed condition, and when being in upper dead center, then be opening state.The lifting action of diaphragm group 7 is to be determined by the gas direction that enters cylinder block 6, and gas direction is handled the decision of source of the gas commutator by programming controller.The pressurized gas of programming controller control or other nuisanceless gas are entered cylinder by gas return path joint 9 through the source of the gas commutator epicoele or cavity of resorption, promotion is assemblied in diaphragm group 7 upstream or downstream on the spool group 5, directly drive the 5 upper and lower actions of spool group, the unsteady sphere flap 10 of valve is opened and closed automatically, reach the effect of automatic control bellows ball core valve door.

In addition, manual-lock spare 12 still can be realized the manual control to valve.

As shown in Figure 2, this program control pneumatic bellows ball core valve program control part is made up of programming controller 13, source of the gas commutator 14, pneumatic circuit 15, pneumatic actuator 16, voltage stabilizer 17.After voltage stabilizer 17 voltage stabilizings, enter source of the gas commutator 14 from the pressurized air of extraneous gas tank input from source of the gas commutator 14 inlet P points, the transducing signal that this moment, programming controller 13 bases were imported in advance or the instruction repertorie of setting are switched on or switched off electromagnet I, II, the guiding valve of source of the gas commutator 14 is moved between suction port A or B, make the pressurized air that enters the source of the gas commutator enter the epicoele or the cavity of resorption of pneumatic actuator 16 through gas return path 15 from A or B suction port, form the action effect that gas return path A-A ' and B-B ' are produced: the epicoele air inlet, A-A ' loop is connected, the diaphragm group is descending, throttle down.During commutation, the cavity of resorption air inlet, B-B ' loop is connected, and the diaphragm group transfers to up, Open valve.The round action of the diaphragm group of pneumatic actuator 16 in cylinder block, a side air inlet of diaphragm group always, opposite side then is in exhaust condition.So when diaphragm group upside was stressed gas effect promotion, spool was descending, diaphragm group underside gas is then returned source of the gas commutator 14 through O by loop B-B ' ₂To atmospheric exhaust.Exhaust loop when the then corresponding spool diaphragm of loop A-A ' group is up is through O ₁To atmospheric exhaust.In procedure operation,, and finish by valve source of the gas commutator 14 follow procedures actions valve is implemented operation automatically the instruction input routine controller 13 of transducing signal or setting.

Claims (1)

1, a kind of program control pneumatic bellows ball core valve door, it is by valve body, the pneumatic actuator and the program control of spool group and valve are partly formed, it is characterized in that described pneumatic bellows ball core valve door is to connect a diaphragm type cylinder on bellows ball core valve body top, the diaphragm group is equipped with on spool group top, on the diaphragm group is divided into cylinder block, following two chambeies, communicating with the interface of source of the gas commutator respectively becomes the pneumatic actuator that drives the action of spool group, described valve programmed control system is then by programming controller, the source of the gas commutator, pneumatic actuator and gas return path are formed, the pressurized gas of programming controller control is entered the epicoele or the cavity of resorption of cylinder by gas return path through the source of the gas commutator, promote diaphragm group driving spool group and move up or down, make the unsteady sphere flap automatic opening-closing of valve.

Images