The content of the invention
Shortcoming and deficiency it is an object of the invention to overcome prior art, there is provided a kind of elastic force or pulling force of use spring
Mechanical mode realize the valve mechanism being automatically switched off.
The present invention is realized by following technical scheme:A kind of gas valve, including valve body, protect valve and main valve
Door;The valve body includes bonnet and valve seat, and the bonnet is arranged on the top of valve seat, and the bonnet is connected with valve seat make-up;The valve
Seat be respectively arranged at two ends with air inlet and gas outlet, between air inlet and gas outlet be valve port passage;Described protection valve sets
Put between air inlet and gas outlet, and the air inlet of application valve body switch, main valve be arranged on protection valve and gas outlet
Between, and the gas outlet of application valve body switch;
The protection valve includes valve port unit and transmission mechanism;Wherein, the valve port unit include sealing valve port pad and
Motion bar;The transmission mechanism includes connection member, button spindle and control-rod;Described connection member includes epithelium;Described
Control-rod includes movable axis, V-groove;The sealing valve port pad is arranged on one end of valve port pipeline and is connected with air inlet;It is described
Button spindle is arranged on the top of epithelium and is connected with epithelium;Described control-rod is arranged on the lower section of epithelium and is connected with epithelium;
The V-groove is arranged on control-rod, and laterally disposed;Described movable axis is arranged on the inside of V-groove;The motion bar
One end is connected with movable axis, and the other end is connected with sealing valve port pad.By the opening and closing of transmission mechanism control air intake valve,
When relatively low air pressure below epithelium or super-pressure can be ensured, air intake valve can be controlled by the transmission mechanism
It is automatically switched off, improves and use the security of gas pipeline.
As a further improvement on the present invention, one end of air inlet, the sealing valve port pad are pointed in the tip of described V-groove
It is arranged on valve port passage outside;Or one end of gas outlet is pointed at the tip of described V-groove, the sealing valve port pad is arranged on valve port
The inside of passage.Movement by movable axis in V-groove can be so that the sealing valve port pad of control motion bar one end is de- with valve port
From or be close to.
As a further improvement on the present invention, the transmission mechanism also includes clamping part;The clamping part includes convex
Platform, at least two thimbles and the resistance spring being connected with one end of thimble respectively;The boss is fixedly installed on button spindle;
One end of the thimble is fixedly connected on bonnet madial wall by resistance spring respectively, the other end respectively with the outside of button spindle
Wall is in contact.By the structure using this spring and thimble, it is not necessary to use Magnetic Control, it is better able to ensure closing air inlet
Stability during valve.
As a further improvement on the present invention, the transmission mechanism also includes control unit, and the control unit includes carrying button,
Back-moving spring and interior fastener;It is described to carry button excessively interior fastener is connected with the both sides of button spindle all;In the back-moving spring is set in
The periphery of fastener, one end is connected with button spindle, and the other end is connected with button is carried.To more stably can be carried by the interior fastener
Button is connected with button spindle, can will be carried under button is acted on without external force by back-moving spring and automatically reset.
As a further improvement on the present invention, the connection member also includes pad and nut;Described pad is connected to
The top of epithelium;Described button spindle is fixed on the top of pad by nut.By pad and nut can preferably by by
Button bar is closely connected with epithelium.
Valve port unit described as a further improvement on the present invention also includes opening and closing spring and spring card;Described bullet
Spring card is fixedly installed on motion bar, and the keying spring is set on motion bar and is connected with spring card.By opening and closing
Spring can control even closer at air intake valve sealing valve port pad when closed and valve port being affixed.
As a further improvement on the present invention, described main valve includes outlet valve pad, small magnet, hand-operated valve pipe and big magnetic
Iron;One end of described small magnet is connected with outlet valve pad;The hand-operated valve pipe is arranged on the outer wall of gas outlet;Described big magnetic
Iron is arranged on hand-operated valve pipe, and can be along hand-operated valve pipe slidably.Can control outlet valve pad and go out by the big magnet of movement
Gas port is separated or is mutually close to.
As a further improvement on the present invention, described main valve also includes a magnet frame;Described small magnet is arranged on
Magnet frame the inside;The magnet frame one end is connected with outlet valve pad.Preferably can be connected with outlet valve pad by magnet frame.
As a further improvement on the present invention, described main valve also includes spring top flat and power assistant spring;The spring top
Piece is fixed on valve seat;One end of the power assistant spring is connected with magnet frame, and the other end is connected with spring top flat.Helped by this
Power spring contributes to when main valve is closed, and outlet valve pad is closely affixed with gas outlet.
As a further improvement on the present invention, the main valve also includes the first armature and the second armature;First armature is pacified
It is connected mounted in one end of hand-operated valve pipe and with bonnet, the second armature is arranged on the other end of hand-operated valve pipe;Described big magnet
In the middle of the first armature and the second armature.Contribute to fix big magnet by armature.
In order to more fully understand and implement, the invention will now be described in detail with reference to the accompanying drawings.
Specific embodiment
Fig. 2 is referred to, it is the section of structure of gas valve of the present invention.Gas valve of the invention includes valve body 1, protects valve
Door 2 and main valve 3.Described valve body 1 includes valve seat 11 and bonnet 12, and the wherein bonnet 12 is arranged on the top of valve seat 11, institute
The bonnet 12 stated is connected with the make-up of valve seat 11.The two ends of described valve seat 11 are provided with air inlet 111 and gas outlet 112, air inlet
It is valve port passage between 111 and gas outlet 112.Described protection valve 2 is arranged between air inlet 111 and gas outlet 112, and
The switch of the air inlet 111 of control valve seat 11, main valve 3 is arranged between protection valve 2 and gas outlet 112, and control valve seat
The switch of 11 gas outlet 112.
Fig. 3 is referred to, it is the structure chart for protecting valve.Described protection valve 2 includes transmission mechanism 22 and valve port list
Unit 21.The transmission mechanism 22 drives valve port unit 21 to control the open and-shut mode of valve port.The transmission mechanism 22 includes control unit
221, button spindle 222, clamping part 223, connection member 224 and control-rod 225;Described button spindle 222 passes through connection member
224 are connected with control-rod 225;Control unit 221 is arranged on the top of button spindle 222, and clamping part 223 sets the inner side of bonnet 12
And be connected with button spindle 222.
Described control unit 221 includes back-moving spring 2212, carries button 2211, interior fastener 2213.It is described to carry button logical 2211
It is connected with the outside of button spindle 222 by interior fastener 2213;The back-moving spring is set in the periphery of interior fastener 222, and its
One end is connected with button spindle 222, and the other end is connected with button 2211 is carried.
Described clamping part includes boss 2233, at least two thimbles 2232 and one end with thimble 2232 is connected respectively
The resistance spring 2231 for connecing;The boss 2233 is fixedly installed on button spindle 222;One end of the thimble 2232 passes through respectively
Resistance spring 2231 is fixedly connected on the madial wall of bonnet 12, and lateral wall of the other end respectively with button spindle 222 is mutually in close contact.
In the present embodiment, thimble 2232 is two.
Described connection member 224 includes nut 2242, epithelium 2243, pad 2241.Described control-rod 225 is arranged on
The lower section of epithelium 2243 is simultaneously connected thereto;Described pad 2241 is connected to the top of epithelium 2243;Described button spindle 222 leads to
Cross the top that nut 2242 is fixed on pad 2241.
Described control-rod 225 is provided with movable axis 2252, V-groove 2251.The V-groove 2251 is arranged on control-rod 225
On, and it is laterally disposed, one end of air inlet 111 is pointed at the tip of the V-groove 2251;Described movable axis 2252 is arranged on V-type
The inside of groove 2251, can the freely activity in V-groove 2251.
Described valve port unit 21 includes sealing valve port pad 211, and motion bar 215 opens and closes spring 213, spring card 214.
Described sealing valve port pad 211 is connected to one end of motion bar 215, the other end of the motion bar 215 and the work of transmission mechanism 22
Moving axis 2252 is connected.Described spring card 214 is fixedly installed on motion bar 215, and the keying spring 213 is set in activity
It is connected on bar 215 and with spring card 214.The other end of the keying spring 213 is fixedly mounted on valve seat 11.By activity
Axle 2252 in V-groove 2251 activity so that drive motion bar carry out on motion bar 215 keying spring apply pressure.It is logical
The effect of the keying spring 213 is crossed, control sealing valve port pad 211 is separated or be close to valve port 212.
Fig. 4 is referred to, it is the structure chart of main valve.Described main valve 3 include outlet valve pad 307, small magnet 308,
Power assistant spring 310, spring top flat 301, hand-operated valve pipe 304, magnet frame 309, the first armature 302, the armature of big magnet 303 and second
305;Described small magnet 308 is arranged on the inside of magnet frame 309.The magnet frame one end is connected to outlet valve pad 307, and the other end leads to
Power assistant spring 310 is crossed to be connected with spring top flat 301.The spring top flat 301 is fixed on valve seat 11.In the outer wall of gas outlet 112
It is provided with hand-operated valve pipe 304;First armature 302 is arranged on one end of hand-operated valve pipe 304 and is connected with bonnet 12, the second armature
305 other ends for being arranged on hand-operated valve pipe 304.Described big magnet 303 is arranged in the first armature 302 and the second armature 305
Between, and can be moved along hand-operated valve pipe 304.
Please refer to Fig. 5 and Fig. 6, wherein, Fig. 5 is the normally-open state diagram of valve, and Fig. 6 is valve normal switching-off
State diagram.The normally-open course of work of the burnt gas valve is:When button 2211 is lifted, button spindle is driven by carrying button 2211
222, epithelium 2243 is driven by button spindle 222, move up.Due to epithelium 2243 drive control-rod 225 on V-groove 2251 to
Upper movement so that movable axis 2252 moves to the V-type tip of V-groove 2251, spring 213 is opened and closed by 215 times compressions of motion bar,
So that sealing valve port pad 211 and the valve port 212 of the dynamic left end of motion bar 215 are separated, now valve port 212 is turned on.
Lift after button 2211 decontrols, due to back-moving spring 2212 in the presence of, can make to carry button 2211 and reset.Now, then
With the big magnet 303 of hand propelled depart from the first armature 302 and along the adhesive of 304 and second armature of hand-operated valve pipe 305 after, big magnet
303 with small magnet 308 in the presence of homopolarity mutually repels, the strength compression power assistant spring of magnet frame 309 is driven by small magnet 308
310, now outlet valve pad 307 and sealing plane 306 separate, gas outlet 112 turns on.
The course of work of shutoff valve door under normal operating conditions:When pipeline is in normal work, when closing valve,
First button spindle 222 is pressed, drives epithelium 2243 to move down, drive control-rod 225 to move down by epithelium 2243.Now, V
The movable axis 2252 of the inside of type groove 2251 can move to the top of V-groove 2251.Motion bar 215 is driven to the right by movable axis 2252
It is mobile, now by the effect of keying spring 213 so that sealing valve port pad 211 is dead with the closing patch of valve port 212.Afterwards, by outlet
Big magnet 303 at mouthful moves to left, due to the mutually repulsion with small magnet 308, the phase right of small magnet 308 can be promoted to move,
Outlet valve pad 307 is mutually adjacent to sealing plane 306, gas outlet is closed.
Fig. 7 is referred to, it is gas valve internal low-voltage or the structural representation without pressure.When the air pressure mistake of the lower section of epithelium 2243
When low, when being less than the pressure of the top of epithelium 2243 by the pressure that the lower section of epithelium 2243 is born, epithelium 2243 can drive control
Bar 225 is moved down, and the movable axis 2252 of the inside of V-groove 2251 can move to the top of V-groove 2251;Now, bullet is being opened and closed
In the presence of the elastic force of spring 213, the sealing valve port pad 211 and valve port on the strength promotion motion bar 215 of spring 213 one end are opened and closed
212 closing notes are dead, so as to cut off source of the gas.
It is automatically switched off due to low-pressure state in valve, and when pipeline recovered normal supply, reopens valve
Men Shi, can lift button 2211, and button spindle 222 is driven by carrying button 2211, and epithelium 2243 is driven by button spindle 222, move upwards
It is dynamic.Because epithelium 2243 drives the V-groove 2251 on control-rod 225 to move up so that movable axis 2252 moves to V-groove
2251 V-type tip, spring 213 is opened and closed by 215 times compressions of motion bar, so that the sealing valve port of the dynamic left end of motion bar 215
Pad 211 is separated with valve port 212, and now valve is opening.
Fig. 8 is referred to, it is the structural representation of gas valve inside super-pressure.When manifold pressure is too high, due to skin
The pressure that the lower section of film 2243 is born is excessive, can move up, and drives button spindle 222 to move up, now on button spindle 222
Boss 2233 can be pushed up holds thimble 2232, and boss 2233 can move to the top of thimble 2232, and now thimble 2232 can be in resistance bullet
In the presence of spring 2231, the lower section of boss 2233 is blocked.At the same time, the V-groove 2251 of control-rod 225 can be moved up, from
And the movable axis 2252 in V-groove 2251 is moved down, now open and close the strength of spring 213 and promote the valve port of the one end of motion bar 215 close
Packing 211 is dead with the closing note of valve port 212, so as to cut off source of the gas.
When valve is in high pressure and is automatically switched off, when pipeline recovered normal supply, button can be pressed
Bar 222, the boss 2233 on the button spindle 222 can push up the thimble 2232 on the both sides for holding the lower section of boss 2233, move down.Pass through
Button spindle 222 is pressed downward epithelium 2243, drives control-rod 225 to move down by epithelium 2243;Now, movable axis 2252 is in V-type
The tip of the V-groove 2251 can be moved in groove 2251.Spring 213 is opened and closed so as to drive motion bar 215 to compress, and makes motion bar
The sealing valve port pad 211 of 215 left ends and valve port 212 are separated, and now, valve is opening.
The present invention can have various deformation implementation method, such as by the tip of V-groove 2251 set on control-rod 225
One end of gas outlet 112 is pointed to, the sealing valve port pad 211 is arranged on the inside of valve port passage.
The invention is not limited in above-mentioned implementation method, if not departing from the present invention to various changes of the invention or deformation
Spirit and scope, if these are changed and within the scope of deformation belongs to claim of the invention and equivalent technologies, then this hair
It is bright to be also intended to comprising these changes and deform.