A kind of two-way butterfly valve
The utility model is related to butterfly valve equipment technical field, specially a kind of two-way butterfly valve.
Butterfly valve is called flap valve, is a kind of regulating valve of simple structure, can be used for the switch control of low pressure pipeline filler
It is disk that butterfly valve refers to closure member, reaches a kind of valve of open and close around valve shaft rotation, valve can be used to controlling air,
The flowing of all kinds fluids such as water, steam, various corrosivity fillers, mud, oil product, liquid metal and radioactivity filler.
Main on pipeline to play cut-out and throttling action, existing butterfly valve is typically all unidirectional, only adapts to the filler flowing of single direction, its
Mainly be made up of valve body, butterfly plate and valve rod, leave fit-up gap between butterfly plate and valve rod and valve rod and valve body between, butterfly plate to
Departing from the mobile of valve seat direction will cause sealing surface at upper lower valve rod than drops, thus produce this leakage be it is inevitable,
And because its butterfly plate is one block of steel plate, it is had certain rigidity, it is necessary to have enough thickness, which thereby enhance butterfly plate
Weight, increases the production cost of butterfly plate, while the streamline of butterfly plate is also undesirable, flow resistance is big, once in addition, valve rod is destroyed,
Deep-etching, volatile and poisonous and hazardous processing medium are leaked out from control valve valve rod, and surrounding enviroment and the person can be pacified
Serious consequence is brought entirely.
Utility model content
The purpose of this utility model is to provide a kind of two-way butterfly valve, to solve the problems, such as to be proposed in above-mentioned background technology.
To achieve the above object, the utility model provides following technical scheme：A kind of two-way butterfly valve, including valve body, it is described
The bottom of valve body is provided with bottom, is provided with the top of the valve body and sealing ring is provided between valve seat, and valve body and valve seat, described
Valve seat is connected by studs with drive device, and the two ends of the studs are threaded with nut, in the valve body
Valve rod is provided with, one end of the valve rod with drive device is connected through valve seat and by key, and valve rod and valve seat and drive device
Junction support is installed, the other end of the valve rod is against on bottom, and butterfly plate, and valve rod and butterfly are provided with the valve rod
By pin connection between plate, the side of the butterfly plate is provided with pressing plate.
Preferably, the valve rod is provided with bushing with valve body junction.
Preferably, the valve rod is provided with pad with the junction of bottom.
Preferably, the side of the drive device is provided with and filler is filled with gland, the support.
Preferably, connected by the first soket head cap screw between the valve body and bottom.
Preferably, connected by the second hexagon socket head cap screw between the pressing plate and butterfly plate.
Preferably, 0 type circle is provided between the sealing ring and valve seat.
Preferably, the drive device can be air motor, fluid motor or electro-motor.
Preferably, corrugated stainless steel tubing is welded with the outside of the valve rod, breast is provided with the outside of the corrugated stainless steel tubing
Shellac varnish anti-corrosive coating layer.
Compared with prior art, the beneficial effects of the utility model are：The utility model, by what is be provided with valve body two ends
Valve seat and bottom, can reach the effect of two way seal, and flow resistance is small, can bidirectional bearing, be easy to the transmitted in both directions of filler, and by
Sealing ring, valve seat and O circles constitute sealing structure, change the sealing structure of traditional valve body, and triple seal increases sealing
Can, long lifespan, using reliability, simple structure is aesthetic in appearance, by the pressing plate being provided with butterfly plate side, is ensureing that butterfly plate is strong
The weight and production cost of butterfly plate are reduced while degree and rigidity, while butterfly plate outer surface can also be made to be in certain streamline
Shape, advantageously reduces flow resistance, by the corrugated stainless steel tubing being welded with the outside of valve rod, when can effectively prevent valve rod from damaging,
Deep-etching, volatile and poisonous and hazardous filler are leaked out from valve body, and surrounding enviroment and personal safety can be brought seriously
Consequence, by the emulsion paint anti-corrosive coating layer being provided with the outside of corrugated stainless steel tubing, with the high temperature resistant, anticorrosion perfected
And anti-permeability, can effectively prevent corrugated stainless steel tubing to be corroded damage, extend service life.
Brief description of the drawings
Fig. 1 is structural representation of the present utility model；
Fig. 2 is stem structure schematic diagram of the present utility model；
Fig. 3 is corrugated stainless steel tubing structural representation of the present utility model.
In figure：1- bottoms；The soket head cap screws of 2- first；3- pads；4- bushings；5- valve rods；6- valve bodies；7- butterfly plates；8- is pressed
Plate；The soket head cap screws of 9- second；10- sells；11- sealing rings；12- valve seats；13- fillers；14- studs；15- nuts；16- branch
Frame；17- glands；18- keys；19- drive devices.
Below in conjunction with the accompanying drawing in the utility model embodiment, the technical scheme in the utility model embodiment is carried out
Clearly and completely describe, it is clear that described embodiment is only a part of embodiment of the utility model, rather than whole
Embodiment.Based on the embodiment in the utility model, those of ordinary skill in the art are not under the premise of creative work is made
The every other embodiment for being obtained, belongs to the scope of the utility model protection.
Refer to Fig. 1-3, a kind of embodiment that the utility model is provided：A kind of two-way butterfly valve, including valve body 6, valve body 6
Bottom is provided with bottom 1, and the top of valve body 6 is provided with valve seat 12, and valve seat 12 and bottom 1 can reach the effect of two way seal,
Flow resistance is small, can bidirectional bearing, be easy to the transmitted in both directions of filler, be provided with sealing ring 11 between valve body 6 and valve seat 12, valve seat 12 leads to
Cross studs 14 to be connected with drive device 19, the two ends of studs 14 are threaded with nut 15, valve body 6 and are provided with valve rod
5, one end of valve rod 5 with drive device 19 is connected through valve seat 12 and by key 18, and valve rod 5 and valve seat 12 and drive device 19
Junction support 16 is installed, the other end of valve rod 5 is against on bottom 1, and butterfly plate 7, and valve rod 5 and butterfly are provided with valve rod 5
Connected by pin 10 between plate 7, the side of butterfly plate 7 is provided with pressing plate 8, reduced while 7 strength and stiffness of butterfly plate are ensured
The weight and production cost of butterfly plate 7, while the outer surface of butterfly plate 7 can also be made in certain streamlined, advantageously reduce flow resistance, valve
Bar 5 is provided with bushing 4 with the junction of valve body 6, and valve rod 5 is provided with pad 3 with the junction of bottom 1, and the side of drive device 19 is installed
Have and filler 13 is filled with gland 17, support 16, connected by the first soket head cap screw 2 between valve body 6 and bottom 1, press
Connected by the second soket head cap screw 9 between plate 8 and butterfly plate 7, O-ring is provided between sealing ring 11 and valve seat 12, by sealing ring
11st, valve seat 12 and O circles constitute sealing structure, change the sealing structure of traditional valve body 6, and triple seal increases sealing
Can, long lifespan, using reliability, simple structure is aesthetic in appearance, and drive device 19 can be air motor, fluid motor or electronic horse
Reach, the outside of valve rod 5 is welded with corrugated stainless steel tubing 20, it is deep-etching, volatile and poisonous when can effectively prevent valve rod from damaging
Harmful filler 13 is leaked out from valve body, and can surrounding enviroment and personal safety be brought with serious consequence, stainless steel ripple
The outside of pipe 20 is provided with emulsion paint anti-corrosive coating layer 21, with the high temperature resistant, anticorrosion perfected and anti-permeability, Neng Gouyou
Effect prevents corrugated stainless steel tubing to be corroded damage, extends service life.
Specifically used mode：The utility model, when using, when drive device 19 works, is revolved by key 18 with ovable valve stem 5
Turn, valve rod 5 drives butterfly plate 7 to be rotated by axis of the center line of valve rod 5 by pin 10, its male cone (strobilus masculinus) is with valve seat 12 after the rotation of butterfly plate 7
Inner conical surface depart from or coincide, flowed to regardless of filler 13, the sealing surface of butterfly plate 7 and valve seat 12 when can ensure that butterfly valve is closed
Ratio pressure between sealing surface, realizes the two way seal of butterfly valve, can be used for the transmitted in both directions of filler, and, the pressing plate of the side of butterfly plate 7
8, the weight and production cost of butterfly plate 7 are reduced while 7 strength and stiffness of butterfly plate are ensured, while can also make outside butterfly plate 7
Surface is in certain streamlined, advantageously reduces flow resistance.
It is obvious to a person skilled in the art that the utility model is not limited to the details of above-mentioned one exemplary embodiment, and
And in the case of without departing substantially from spirit or essential attributes of the present utility model, can in other specific forms realize that this practicality is new
Type.Therefore, no matter from the point of view of which point, embodiment all should be regarded as exemplary, and is nonrestrictive, this practicality is new
The scope of type limits by appended claims rather than described above, it is intended that the equivalency fallen in claim is contained
All changes in justice and scope are included in the utility model.Any reference in claim should not be considered as limitation