CN205918911U - Butterfly valve - Google Patents

Abstract

The utility model relates to the field of valves, especially, relate to a butterfly valve. A butterfly valve, includes butterfly valve subassembly and drive the actuating mechanism of butterfly valve subassembly, the butterfly valve subassembly includes the valve body to and the valve plate of setting in the valve body, and with the valve rod axle that the valve plate is connected, actuating mechanism includes cylinder components to and set up at the epaxial drive assembly of cylinder components's output, drive assembly with the outer tip transmission of valve rod axle is connected. This butterfly valve adopts above -mentioned scheme, has good, the not fragile and long service life's of leakproofness advantage.

Description

A kind of butterfly valve

Technical field

This utility model is related to valve field, more particularly, to a kind of butterfly valve.

Background technology

Butterfly valve is flap valve again, is a kind of simple regulating valve of structure, can be used for the on-off control of low pressure pipeline medium Butterfly valve refers to that closure member (valve plate or butterfly plate) is disk, rotates to reach a kind of valve of open and close around valve shaft, valve can For controlling all kinds such as empty gas and water, steam, various Korrosionsmedium, mud, oil product, liquid metal and radiating medium The flowing of fluid.But, the weak point of three aspects below existing butterfly valve presence: 1, in the course of conveying of sour crude oil, sulfur Sulphur is best in 140～145 DEG C of mobility, is easy to crystallize in room temperature；And existing butterfly valve easily produces crystallization when using Phenomenon, the sealing that crystalline solid is easily caused butterfly valve declines；2, the valve internal of butterfly valve easily loosens, parts easy to fall off, bearing There is friction phenomenon between valve inner, valve rod and axle sleeve, valve integrally has that sealing is poor, service life is shorter, peace The problems such as reliability is poor entirely；3, between the valve plate of butterfly valve and valve body, rigid gluing, sealing, does not have the space of flexible adjustment, a side Because thermal expansion easily stuck phenomenon between face valve plate and valve body, valve plate is caused not open；Another aspect valve plate is opening relatively In the case of closing, the sealing contact surface of valve plate and valve body, easily because abrasion in dynamic friction, substantially reduces the use of valve plate Life-span.

Content of the invention

In order to solve the above problems, the purpose of this utility model is to provide a kind of good airproof performance, is hardly damaged and uses The butterfly valve of life-span length.

In order to realize above-mentioned purpose, this utility model employs following technical scheme:

A kind of butterfly valve, including butterfly valve assembly, and the actuator driving described butterfly valve assembly；Described butterfly valve assembly includes Valve body, and it is arranged on the valve plate in valve body, and the stem shaft being connected with described valve plate；Described actuator includes cylinder Assembly, and be arranged on the transmission component on the output shaft of cylinder assembly, the outer end transmission of transmission component and described stem shaft Connect；

The section of described valve body is in annular, in the middle part of valve body, its axis direction is provided with medium runner, the radial direction of valve body Both ends are provided with the flange disk body for being connected with medium pipeline, and flange disk body is connected casting with valve body；Institute State valve inner and be additionally provided with vapor chamber, and the steam channel communicating with described vapor chamber, vapor chamber is along the side wall of medium runner Circumferentially disposed；

It is provided with locating shaft, locating shaft is located on body wall and being capable of relative valve on the side wall of described medium runner Body circumferentially rotates, and is provided with positioning shaft sleeve, the outer end of locating shaft is fixed with for positioning between locating shaft and body wall State the positioning pressuring plate of positioning shaft sleeve, and the positioning end cap positioning described positioning pressuring plate；Described stem shaft is arranged on medium runner Opposite side wall on, stem shaft is located on body wall and can relatively valve body circumferentially rotate, stem shaft and body wall it Between be provided with limit shaft sleeve and packing seal assembly；Described filler black box includes the filler pad offseting with limit shaft sleeve, with And it is arranged on two-layer filler outside filler pad, and it is arranged on the filler spacer ring between two-layer filler, and be used for positioning The filler set of described filler, and for positioning the hold-down grid of described filler set；Hold-down grid is connected solid by connection member It is scheduled on valve body；

Described locating shaft and stem shaft are on same axis, and valve plate is arranged in the medium runner of valve body, and the one of valve plate End is fixed on locating shaft by connection member, and the other end of valve plate is fixed in stem shaft by connection member；Described valve plate The axis of axis and medium runner be on two lines direction；It is positioned with pressure on the medium runner side wall in stem shaft downstream Circle, is positioned with valve seat between trim ring and valve body；Described valve seat is circumferential untight becket, and the section of valve seat is in u shape shape, The u shape opening of valve seat protrudes from trim ring and is in medium runner towards the radial outside of medium runner, the u shape bottom of valve seat.

This utility model adopts technique scheme, and this butterfly valve has an advantage of following three aspects:

1, the valve inner of this butterfly valve is provided with vapor chamber, and vapor chamber is circumferentially disposed along the side wall of medium runner, in vapor chamber It is provided with the steam channel communicating therewith；It is (the sulfur-bearing as background technology indication when room temperature is easy to the fluid crystallizing in medium fluid Crude oil), above-mentioned steam channel can connect high-temperature steam, and high-temperature steam is full of and inside vapor chamber, body wall is heated, from And lift the fluid temperature (F.T.) through this butterfly valve, substantially reduce its crystalline polamer, thus ensureing the sealing effectiveness of this butterfly valve；

2, the valve plate two ends of this butterfly valve pass through locating shaft and stem shaft positioning respectively, and locating shaft passes through axle sleeve, pressing plate and end Lid is positioned, setting packing seal assembly positioning and limit shaft sleeve between stem shaft and valve body, and limit shaft sleeve is used for valve rod Axle is positioned, and the filler in packing seal assembly is used for ensureing the sealing between stem shaft and valve body, filler set and filler Pressing plate is used for described filler is positioned, and so that filler is fixed, and prevents filler long-term with described stem shaft rubbed Produce in journey and loosen, lift its sealing effectiveness；Said structure carries out stable position to the bascule of valve plate, makes the valve plate of butterfly valve Moving part is difficult to produce medium leakage and permeates, and ensures valve plate motion；

3, the valve body media flow passage side wall of this butterfly valve is positioned with trim ring, is positioned with valve seat between trim ring and valve body, this valve The section of seat is in u shape shape, and, towards the radial outside of medium runner, the u shape bottom of valve seat protrudes from trim ring for the u shape opening of valve seat And be in medium runner.When medium fluid is liquid, the valve plate of butterfly valve is closed down, the peripheral edge of valve plate with The u shape bottom of valve seat offsets, and the liquid in medium runner can infiltrate in the u shape opening of valve seat and provide a lasting pressure, Because valve seat is circumferential untight becket, this pressure makes valve seat radially gathering, the u shape bottom of valve seat and the periphery sides of valve plate Edge is more fitted, i.e. interference fit between this state lower valve base and valve plate, and sealing effectiveness is more preferable.

Brief description

Fig. 1 is schematic cross-section of the present utility model.

Fig. 2 is a portion enlarged drawing of Fig. 1.

Fig. 3 is side schematic view of the present utility model.

Specific embodiment

Below in conjunction with the accompanying drawings, preferred embodiment of the present utility model is described in further detail.

A kind of butterfly valve as shown in Fig. 1 ~ 3, including butterfly valve assembly, and the actuator driving described butterfly valve assembly.Institute State butterfly valve assembly and include valve body 1, and be arranged on the valve plate 2 in valve body 1, and the stem shaft 3 being connected with described valve plate 2. Described actuator includes cylinder assembly 41, and is arranged on the transmission component 42 on the output shaft of cylinder assembly 41, transmission group Part 42 is in transmission connection with the outer end of described stem shaft 3.

The section of described valve body 1 is in annular, in the middle part of valve body 1, its axis direction is provided with medium runner 11, valve body 1 Axial both ends are provided with the flange disk body 12 for being connected, flange disk body 12 and the casting of valve body 1 integrally connected with medium pipeline Cause type.It is additionally provided with vapor chamber 13, and the steam channel 14 communicating with described vapor chamber 13, vapor chamber inside described valve body 1 13 is circumferentially disposed along the side wall of medium runner 11；Using this structure, it is (as carried on the back when room temperature is easy to the fluid crystallizing in medium fluid The sour crude oil of scape technology indication), above-mentioned steam channel 14 can connect high-temperature steam, and it is right inside vapor chamber 13 that high-temperature steam is full of Valve body 1 side wall is heated, thus lifting the fluid temperature (F.T.) through this butterfly valve, substantially reduces its crystalline polamer, is somebody's turn to do thus ensureing The sealing effectiveness of butterfly valve.

Locating shaft 31 is provided with the side wall of described medium runner 11, locating shaft 31 is located on valve body 1 side wall and energy Enough valve bodies 1 relatively circumferentially rotate, and are provided with positioning shaft sleeve 32, on the outer end of locating shaft 31 between locating shaft 31 and valve body 1 side wall It is fixed with the positioning pressuring plate 33 for positioning described positioning shaft sleeve 32, and the positioning end cap 34 positioning described positioning pressuring plate 33. Described stem shaft 3 is arranged on the opposite side wall of medium runner 11, and stem shaft 3 is located on valve body 1 side wall and being capable of relative valve Body 1 circumferentially rotates, and is provided with limit shaft sleeve 35 and packing seal assembly between stem shaft 3 and valve body 1 side wall.Described filler sealing group Part includes the filler pad 36 offseting with limit shaft sleeve 35, and is arranged on the two-layer filler 37 outside filler pad 36, and It is arranged on the filler spacer ring 38 between two-layer filler 37, and cover 39 for positioning the filler of described filler 37, and for fixed The hold-down grid 30 of position described filler set 39, hold-down grid 30 is fastened on valve body 1 by connection member (as bolt).Institute State locating shaft 31 to be on same axis with stem shaft 3, valve plate 2 is arranged in the medium runner 11 of valve body 1, one end of valve plate 2 It is fixed on locating shaft 31 by connection member, the other end of valve plate 2 is fixed in stem shaft 3 by connection member.Above-mentioned knot In structure, valve plate two ends pass through locating shaft and stem shaft positioning respectively, and locating shaft is positioned by axle sleeve, pressing plate and end cap, valve Setting packing seal assembly positioning and limit shaft sleeve between bar axle and valve body, limit shaft sleeve is used for stem shaft is positioned, fills out Filler in material black box is used for ensureing that the sealing between stem shaft and valve body, filler set and hold-down grid are used for described Filler is positioned, and so that filler is fixed, and prevents filler from producing in the friction process long-term with described stem shaft and loosens, carries Rise its sealing effectiveness；Said structure carries out stable position to the bascule of valve plate, makes the valve plate moving part of butterfly valve be difficult to give birth to Produce medium to reveal and permeate, ensure valve plate motion, extend the service life of valve plate.

The axis of described valve plate 2 and the axis of medium runner 11 are on two lines direction, the medium in stem shaft 3 downstream It is positioned with trim ring 21 on runner 11 side wall, between trim ring 21 and valve body 1, be positioned with valve seat 22.Described valve seat 22 is that circumference is unclosed Becket, the section of valve seat 22 is in u shape shape, and the u shape opening of valve seat 22 is towards the radial outside of medium runner 11, valve seat 22 U shape bottom protrude from trim ring 21 and be in medium runner 11.In said structure, valve body 1 medium runner 11 side wall positions There is trim ring 21, between trim ring 21 and valve body 1, be positioned with valve seat 22, the section of this valve seat 22 is in u shape shape, and the u shape of valve seat 22 is opened Towards the radial outside of medium runner 11, the u shape bottom of valve seat 22 protrudes from trim ring 21 and is in medium runner 11 mouth.It is being situated between When mass flow body is liquid, the valve plate 2 of butterfly valve is closed down, the u shape bottom phase of the peripheral edge of valve plate 2 and valve seat 22 Support, the liquid in medium runner 11 can infiltrate in the u shape opening of valve seat 22 and provide a lasting pressure, because valve seat 22 is The untight becket of circumference, this pressure makes valve seat 22 radially draw in, and the u shape bottom of valve seat 22 is with the peripheral edge of valve plate 2 more Stick on conjunction, i.e. interference fit between this state lower valve base 22 and valve plate 2, sealing effectiveness is more preferable.

It should be appreciated that above-mentioned specific embodiment of the present utility model is used only for exemplary illustration or explains this reality With new principle, and do not constitute to restriction of the present utility model.Therefore, without departing from spirit and scope of the present utility model In the case of any modification, equivalent substitution and improvement done etc., should be included within protection domain of the present utility model.Additionally, This utility model claims are intended to fall into scope and border or this scope and border Whole changes in equivalents and modification.

Claims (1)

1. a kind of butterfly valve it is characterised in that: include butterfly valve assembly, and drive described butterfly valve assembly actuator；Described butterfly Valve module includes valve body, and is arranged on the valve plate in valve body, and the stem shaft being connected with described valve plate；Described execution machine Structure includes cylinder assembly, and is arranged on transmission component, transmission component and described stem shaft on the output shaft of cylinder assembly Outer end is in transmission connection；

The section of described valve body is in annular, in the middle part of valve body, its axis direction is provided with medium runner, the axial two ends of valve body Portion is provided with the flange disk body for being connected with medium pipeline, and flange disk body is connected casting with valve body；Described valve Internal portion is additionally provided with vapor chamber, and the steam channel communicating with described vapor chamber, and vapor chamber is along the side wall circumference of medium runner Setting；

It is provided with locating shaft, locating shaft is located on body wall and being capable of relative valve body week on the side wall of described medium runner To rotation, between locating shaft and body wall, it is provided with positioning shaft sleeve, it is described fixed for positioning that the outer end of locating shaft is fixed with The positioning pressuring plate of position axle sleeve, and the positioning end cap positioning described positioning pressuring plate；Described stem shaft is arranged on the another of medium runner On the wall of side, stem shaft is located on body wall and can valve body relatively circumferentially rotate, and sets between stem shaft and body wall Limited location axle sleeve and packing seal assembly；Described filler black box includes the filler pad offseting with limit shaft sleeve, Yi Jishe Put the two-layer filler outside filler pad, and be arranged on the filler spacer ring between two-layer filler, and be used for positioning described The filler set of filler, and for positioning the hold-down grid of described filler set；Hold-down grid is fastened on by connection member On valve body；

Described locating shaft and stem shaft are on same axis, and valve plate is arranged in the medium runner of valve body, and one end of valve plate leads to Cross connection member to be fixed on locating shaft, the other end of valve plate is fixed in stem shaft by connection member；The axle of described valve plate Line is on two lines direction with the axis of medium runner；It is positioned with trim ring, pressure on the medium runner side wall in stem shaft downstream It is positioned with valve seat between circle and valve body；Described valve seat is circumferential untight becket, and the section of valve seat is in u shape shape, valve seat U shape opening towards medium runner radial outside, the u shape bottom of valve seat protrudes from trim ring and is in medium runner.