CN211693558U

CN211693558U - Bidirectional sealing spherical butterfly valve

Info

Publication number: CN211693558U
Application number: CN201922291367.4U
Authority: CN
Inventors: 王志坚; 李智
Original assignee: Tianjin Krs Valve Co ltd
Current assignee: Tianjin Krs Valve Co ltd
Priority date: 2019-12-18
Filing date: 2019-12-18
Publication date: 2020-10-16
Anticipated expiration: 2029-12-18

Abstract

The utility model provides a two way seal's spherical butterfly valve belongs to the valve field, including valve body, valve plate, valve rod and sealing washer, it is relative that the valve rod is passed through at the both ends of valve plate the valve body rotates to be connected, the sealed face of valve plate for the sphere and through the sphere with the valve plate cooperation is realized sealing, the valve body with valve plate complex part is spherical structure, the sealing washer passes through the relative valve body of clamping ring and fixes a position in the axis direction, the clamping ring be close to one side of valve plate with be equipped with first sealing ring between the valve body, the outer lane of sealing washer with be equipped with the second sealing ring between the valve body. The utility model discloses convenient operation, it is with low costs, not occupy the runner space after the valve plate is opened moreover, promoted the circulation of valve opening back medium greatly, the circulation is efficient.

Description

Bidirectional sealing spherical butterfly valve

Technical Field

The utility model belongs to the valve field relates to a two way seal's spherical butterfly valve.

Background

The butterfly valve is also called a flap valve, is a regulating valve with simple structure, can be used for the on-off control of low-pressure pipeline media, and is a butterfly valve which is opened and closed by rotating around a valve shaft by taking a closing part (a valve clack or a butterfly plate) as a disc, and has simple structure but easy leakage.

The ball valve, the opening and closing part (spheroid) is driven by the valve stem, and round the valve that the ball valve axis makes the rotary motion, the ball valve mainly is used for cutting off, distributing and changing the flow direction of the medium in the pipeline, it only needs to rotate 90 degrees operation and very little turning moment can close tightly, the ball valve is good a lot of relative butterfly valve's leakproofness, the operation is also more nimble convenient, but the cost is very high, at present there is not the valve that will combine completely with above two structures in the market.

SUMMERY OF THE UTILITY MODEL

The to-be-solved problem of the utility model is to provide a two way seal's spherical butterfly valve, convenient operation, it is with low costs, not occupy the runner space after the valve plate is opened moreover, promoted the valve greatly and opened the circulation of back medium, the circulation efficiency is high.

In order to solve the technical problem, the utility model discloses a technical scheme is: the utility model provides a two way seal's spherical butterfly valve, includes valve body, valve plate, valve rod and sealing washer, the both ends of valve plate are relative through the valve rod the valve body rotates to be connected, the sealed face of valve plate for the sphere and through the sphere with the valve plate cooperation realizes sealed, the valve body with valve plate complex part is spherical structure, the sealing washer passes through the relative valve body of clamping ring and fixes a position in the axis direction, the clamping ring be close to one side of valve plate with be equipped with first sealing ring between the valve body, the outer lane of sealing washer with be equipped with the second sealing ring between the valve body.

Further, the valve plate includes terminal surface, first connecting plate and second connecting plate, first connecting plate and the relative sectional horizontal central plane symmetry of second connecting plate set up, the valve rod includes valve rod and lower valve rod, the too polygonal connecting hole of first connecting plate intercommunication is connected with last valve rod, second connecting plate and lower valve rod fixed connection, the valve rod rotates through lower axle sleeve and valve body and is connected down.

Furthermore, the first connecting plate is in a convex arc shape, a first circular bead surface for processing is arranged on one side, close to the first connecting plate, of the end face, and a second circular bead surface for processing is arranged on one side, far away from the first connecting plate, of the end face.

Furthermore, the upper valve rod is rotatably connected with the valve body through an upper shaft sleeve, the upper end of the upper shaft sleeve is provided with a filler, the filler is arranged between the upper valve rod and the valve body, the filler is fixed through a gland arranged on the valve body, and the gland is fixedly connected with the valve body through a screw.

Furthermore, the upper end of the gland is provided with a positioning surface corresponding to the screw, the screw is fixed through the nut after being upwards arranged from the valve body, and the outer ring of the nut is arranged in contact with the positioning surface.

Further, the outer lane of valve plate is equipped with the constant head tank, the section of constant head tank is the trapezoidal of invering, the second sealing ring is established in the constant head tank, the same and O type circle that is of structure of first sealing ring and second sealing ring.

Furthermore, the circumferential position of the sealing ring is positioned through a positioning protrusion on the pressing ring, and the thickness of the sealing ring is smaller than the vertical distance between the pressing ring and the valve body.

Furthermore, one side of the inner part of the sealing ring, which is close to the valve plate, is an inner sealing surface, one side of the sealing ring, which is far away from the valve plate, is an outer sealing surface, and the inclination of the outer sealing surface is smaller than that of the outer sealing surface.

Furthermore, the inner ring of the pressing ring is provided with a chamfer.

Furthermore, the inside of valve body is equipped with the stopper that the restriction valve plate unidirectional rotation.

Compared with the prior art, the utility model has the advantages and positive effect as follows.

1. The utility model is provided with the spherical valve body and the valve plate, the operation is flexible and convenient, and simultaneously, the valve body has the advantages of simple structure of the butterfly valve and good sealing performance of the ball valve, the cost reduction of the relative ball valve can reach 30 percent, the cost promotion of the relative butterfly valve is not more than 5 percent, the valve body can be used for replacing the ball valve and the butterfly valve, and the universality is high;

2. the valve plate adopts a structure of upper and lower split type connection, so that the function of not occupying a medium channel after the valve plate rotates is realized, and the flow rate is improved;

3. the thickness of sealing washer is less than the perpendicular distance between clamping ring and the valve body, leads to the relative valve body of sealing washer portable in the axis direction, for example when the medium flows in, in the medium enters into the gap between sealing washer and the clamping ring, the water pressure that the entering of liquid formed plays certain pre-compaction effect to the sealing washer, increases the leakproofness between sealing washer and the valve plate, and the sealing washer adopts the material that contains carbon in the fluororubber, and hardness is high, and the wearability is good moreover, and wearing and tearing are few, long service life.

Drawings

The accompanying drawings, which form a part hereof, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention without undue limitation. In the drawings:

fig. 1 is a cross-sectional view of a two-way sealed spherical butterfly valve of the present invention;

FIG. 2 is a detailed view of section B of FIG. 1 in accordance with the present invention;

fig. 3 is a schematic structural diagram of a side view of a two-way sealed spherical butterfly valve of the present invention;

fig. 4 is a schematic structural diagram of a two-way sealed spherical butterfly valve in a top view;

figure 5 is a detail view of section a of figure 4 of the present invention;

fig. 6 is a schematic structural view of the valve plate of the present invention.

Reference numerals:

1. a valve body; 11. a limiting block; 2. a valve plate; 21. an end face; 22. a first connecting plate; 23. a second connecting plate; 24. A first shoulder surface; 25. a second shoulder surface; 3. pressing a ring; 31. chamfering; 32. a first seal ring; 4. an upper shaft sleeve; 5. a lower shaft sleeve; 6. a filler; 7. a gland; 71. positioning the surface; 8. an upper valve stem; 9. a lower valve stem; 10. a seal ring; 101. a second seal ring; 102. an outer sealing surface; 103. an inner sealing surface.

Detailed Description

It should be noted that, in the present invention, the embodiments and features of the embodiments may be combined with each other without conflict.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are used merely for convenience of description and for simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention. Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art through specific situations.

The following detailed description of the embodiments of the present invention will be made with reference to the accompanying drawings.

As shown in fig. 1-6, the utility model relates to a two way seal's spherical butterfly valve, including valve body 1, valve plate 2, valve rod and sealing washer 10, valve rod relative valve body 1 is passed through at the both ends of valve plate 2 and is rotated and connect, the sealed face of valve plate 2 is the sphere and realizes sealing through sphere and valve plate 2 cooperation, valve body 1 is spherical structure with valve plate 2 complex part, sealing washer 10 passes through the relative valve body 1 of clamping ring 3 and fixes a position in the axis direction, be equipped with first sealing ring 32 between one side that clamping ring 3 is close to valve plate 2 and valve body 1, be equipped with second sealing ring 101 between the outer lane of sealing washer 10 and the valve body 1.

Preferably, valve plate 2 includes terminal surface 21, first connecting plate 22 and second connecting plate 23, first connecting plate 22 and the relative sectional horizontal central plane symmetry setting of second connecting plate 23, the valve rod includes valve rod 8 and lower valve rod 9, first connecting plate intercommunication is crossed polygonal connecting hole and is connected with last valve rod 8, second connecting plate and lower valve rod 9 fixed connection, lower valve rod 9 rotates with valve body 1 through lower axle sleeve 5 and is connected, the structure of this kind of split type connection from top to bottom of valve plate 2, realized that valve plate 2 does not occupy the function of medium passageway after rotating, promote the circulation.

Preferably, the first connecting plate 22 is a convex arc, a first shoulder surface 24 for processing is arranged on one side of the end surface 21 close to the first connecting plate 22, a second shoulder surface 25 for processing is arranged on one side far away from the first connecting plate 22, and the valve plate 2 is directly cast and formed, and is convenient to process after the first shoulder surface 24 and the second shoulder surface 25 are arranged.

Preferably, the upper valve rod 8 is rotatably connected with the valve body 1 through an upper shaft sleeve 4, the upper end of the upper shaft sleeve 4 is provided with a packing 6, the packing 6 is arranged between the upper valve rod 8 and the valve body 1, the packing 6 is fixed through a gland 7 arranged on the valve body 1, the gland 7 is fixedly connected with the valve body 1 through screws, and the sealing performance between the upper valve rod 8 and the valve body 1 is improved.

Preferably, the upper end of gland 7 corresponds the part with the screw and is equipped with locating surface 71, and the screw is fixed through the nut after upwards setting up from valve body 1, and the outer lane and the contact of locating surface 71 of nut set up, and this kind of mounting means is more convenient, and traditional structure from the top down installation twists the tip of moving the screw, and the space is too little between instrument and the locating surface 71, operates inconveniently, and this structure is easy to assemble more, and operating space is big, is favorable to promoting the packaging efficiency.

Preferably, the outer lane of valve plate 2 is equipped with the constant head tank, and the section of constant head tank is the trapezoidal of inversion, and second sealing ring 101 is established in the constant head tank, and first sealing ring 32 is the same with the structure of second sealing ring 101 and just is O type circle, promotes second sealing ring 101's positioning accuracy, also convenient equipment.

Preferably, the circumferential position of the sealing ring 10 is positioned by a positioning protrusion on the pressing ring 3, the thickness of the sealing ring 10 is smaller than the vertical distance between the pressing ring 3 and the valve body 1, so that the sealing ring 10 can move in the axial direction relative to the valve body 1, for example, when a medium flows in, the medium enters a gap between the sealing ring 10 and the pressing ring 3, water pressure formed by the entering of the liquid plays a certain prepressing role on the sealing ring 10, the sealing performance between the sealing ring 10 and the valve plate 2 is improved, the gap between the sealing ring 10 and the valve body 1 is 0.5-3 mm, and the range of the distance is stable in structure and good in sealing performance; more preferably, the sealing ring 10 is made of a material containing carbon in fluororubber, so that the sealing ring has high hardness, good wear resistance, less wear and long service life; more preferably, the side of the inside of the sealing ring 10 close to the valve plate 2 is an inner sealing surface 103, the side far away from the valve plate 2 is an outer sealing surface 102, the inclination of the outer sealing surface 102 is smaller than that of the outer sealing surface 102, and the precompressed tightness is improved unlike the contact surface of the medium.

Preferably, the inner ring of the press ring 3 is provided with a chamfer 31, which has a certain guiding effect on the medium.

Preferably, the inside of valve body 1 is equipped with restriction valve plate 2 unidirectional rotation's stopper 11, but guarantees valve plate 2 unidirectional rotation, and stability is higher, also convenient operation.

In the actual working process, the valve rod is well installed according to the structure, the valve rod is connected with an external actuating mechanism, the valve plate 2 is driven to rotate through the rotation of the valve rod, due to the arrangement of the limiting block 11, in the structure, the valve plate 2 can only rotate anticlockwise, after the valve is rotated for 90 degrees, the valve is in an open state, because the valve body 1 and the valve plate 2 both adopt a spherical structure, in the open state, the valve plate 2 is hidden at a position outside a channel, the inner cavity is large in circulation, the circulation of a medium is improved, in addition, a gap is reserved between the sealing ring 10 and the valve body 1 in the width direction, the medium can enter the gap, the prepressing function is realized, the sealing performance is improved, in addition, the structure is flexible and convenient to operate, meanwhile, the performance of simple structure and good sealing performance of the ball valve are realized, in addition, the cost, the universality is high.

While one embodiment of the present invention has been described in detail, the description is only a preferred embodiment of the present invention, and should not be considered as limiting the scope of the present invention. All the equivalent changes and improvements made according to the application scope of the present invention should still fall within the patent coverage of the present invention.

Claims

1. The utility model provides a ball butterfly valve of two way seal which characterized in that: including valve body, valve plate, valve rod and sealing washer, the both ends of valve plate are relative through the valve rod the valve body rotates to be connected, the sealed face of valve plate for the sphere and through the sphere with the valve plate cooperation realizes sealing, the valve body with valve plate complex part is spherical structure, the sealing washer passes through the relative valve body of clamping ring and fixes a position in the axis direction, the clamping ring be close to the valve plate one side with be equipped with first sealing ring between the valve body, the outer lane of sealing washer with be equipped with the second sealing ring between the valve body.

2. A bi-directional sealed spherical butterfly valve in accordance with claim 1, wherein: the valve plate includes terminal surface, first connecting plate and second connecting plate, the relative sectional horizontal central plane symmetry of first connecting plate and second connecting plate sets up, the valve rod includes valve rod and lower valve rod, the polygonal connecting hole of first connecting plate intercommunication is connected with last valve rod, second connecting plate and lower valve rod fixed connection, the valve rod rotates with the valve body through lower axle sleeve and is connected down.

3. A bi-directional sealed spherical butterfly valve in accordance with claim 2, wherein: the first connecting plate is in a convex arc shape, a first circular bead surface for processing is arranged on one side, close to the first connecting plate, of the end face, and a second circular bead surface for processing is arranged on one side, far away from the first connecting plate.

4. A bi-directional sealed spherical butterfly valve in accordance with claim 2, wherein: the upper valve rod is rotatably connected with the valve body through an upper shaft sleeve, the upper end of the upper shaft sleeve is provided with packing, the packing is arranged between the upper valve rod and the valve body, the packing is fixed through a gland arranged on the valve body, and the gland is fixedly connected with the valve body through screws.

5. The butterfly valve of claim 4, wherein: the upper end of the gland is provided with a positioning surface corresponding to the screw, the screw is fixed through the nut after being upwards arranged from the valve body, and the outer ring of the nut is arranged in contact with the positioning surface.

6. A bi-directional sealed spherical butterfly valve in accordance with claim 1, wherein: the outer lane of valve plate is equipped with the constant head tank, the section of constant head tank is the trapezoidal of invering, the second sealing ring is established in the constant head tank, the structure of first sealing ring and second sealing ring is the same and is O type circle.

7. A bi-directional sealed spherical butterfly valve in accordance with claim 1, wherein: the circumference position of sealing washer is fixed a position through the location arch on the clamping ring, the thickness of sealing washer is less than the perpendicular distance between clamping ring and the valve body.

8. A bi-directional sealed spherical butterfly valve in accordance with claim 1, wherein: the inner side of the sealing ring close to the valve plate is an inner sealing surface, the side far away from the valve plate is an outer sealing surface, and the inclination of the outer sealing surface is smaller than that of the outer sealing surface.

9. A bi-directional sealed spherical butterfly valve in accordance with claim 1, wherein: and the inner ring of the compression ring is provided with a chamfer.

10. A bi-directional sealed spherical butterfly valve in accordance with claim 1, wherein: and a limiting block for limiting the unidirectional rotation of the valve plate is arranged in the valve body.