CN210830517U - Bias-cutting and centering butterfly valve device - Google Patents

Abstract

The utility model discloses an off-centre butterfly valve device is just being put to beveling, off-centre butterfly valve device just put butterfly valve and drive connection including positive awl in the drive assembly of positive awl just putting butterfly valve. The positive cone positive butterfly valve comprises a valve seat, a valve core, a rotating shaft and a sealing assembly, wherein the valve seat is provided with a valve hole, and at least part of the inner wall surface of the valve hole is provided with an inner positive cone surface and is vertical to the section contour line of the central line of the valve hole and is circular. The rotating shaft is rotatably connected to the valve seat, the valve core is installed in the valve hole, an outer positive conical surface is arranged on the outer side wall of the valve core, the center line of the valve core is eccentric to the rotating center line of the rotating shaft by a preset distance, and the center line of the valve core coincides with the axis of the valve hole. The rotating shaft drives the valve core to rotate, the valve core opens the valve hole, or the outer positive conical surface of the valve core is sealed and attached to the inner positive conical surface of the valve hole. The matching surface of the valve seat and the valve core is a positive conical surface, so that the machining precision is high, and the matching performance is good.

Description

Bias-cutting and centering butterfly valve device

Technical Field

The invention relates to the technical field of valves, in particular to a beveling and righting eccentric butterfly valve device.

Background

In the related art, a triple offset butterfly valve includes a valve seat, a valve core, and a driving shaft fixed to the valve core, wherein a rotation center line of the driving shaft is deviated from a top surface of the valve core by a predetermined distance. The valve seat is provided with a valve hole, and the center line of the valve core and the center line of the valve hole deviate from a preset distance and do not coincide. And the wall surface of the valve hole is provided with a taper and a conical surface is not a positive conical surface so as to form an eccentric curved surface.

Therefore, the triple offset butterfly valve has three offset, and the inner wall surface of the valve hole is set to be a non-positive conical surface, so the machining precision is low, the matching is poor, and the product yield is low and the cost is high. The sealing effect at the connecting part of the driving shaft and the valve seat is poor, and liquid guided by the butterfly valve is easy to permeate into the gap between the driving shaft and the valve seat, so that the butterfly valve is corroded or seeps out of the butterfly valve, and other parts are corroded or polluted.

Disclosure of Invention

The invention aims to provide a beveling and righting eccentric butterfly valve device.

In order to achieve the purpose, the invention adopts the technical scheme that:

the first aspect of the present disclosure: the oblique-cutting upright eccentric butterfly valve device comprises an upright-cone upright butterfly valve and a driving component which is connected with the upright-cone upright butterfly valve in a driving mode, wherein the upright-cone upright butterfly valve comprises a valve seat, a valve core, a rotating shaft fixedly arranged on the valve core and a sealing component which is sleeved on the rotating shaft and sealed between the valve seat and the rotating shaft;

the rotating shaft drives the valve core to rotate towards a first direction under the driving of the driving assembly, and the valve core rotates relative to the valve seat and opens the valve hole;

the rotating shaft drives the valve core to rotate towards a second direction under the driving of the driving assembly, the valve core rotates relative to the valve seat until the outer positive conical surface of the valve core is sealed and attached to the inner positive conical surface of the valve hole, and the central line of the valve core is overlapped with the axis of the valve hole.

Optionally, the valve core includes a plate body portion and a boss portion protruding on one side surface of the plate body portion, the rotation axis is fixedly connected to the boss portion, the rotation center line of the rotation axis and the top surface of the plate body portion are spaced by a preset distance, and the outer front conical surface is annularly arranged on the outer peripheral wall of the plate body portion.

Optionally, the plate body is of a plate-shaped structure, the valve element further includes a first space avoiding portion and a second space avoiding portion which are in an inverted angle shape, the first space avoiding portion and the second space avoiding portion are respectively disposed at edges of two ends of the plate body, and the plate body avoids an interference portion with an inner regular conical surface of the valve seat in a rotation process of the valve element through the first space avoiding portion and the second space avoiding portion.

Optionally, the rotating shaft includes a first rotating shaft and a second rotating shaft that are coaxially disposed and fixed to the valve core, the first rotating shaft penetrates through the valve seat and is in driving connection with the driving assembly, and the second rotating shaft is rotatably connected to the valve seat.

Optionally, the valve seat is provided with a sealing hole, the sealing assembly is inserted into the sealing hole and elastically deforms and is in sealing fit with the hole wall of the sealing hole under the action of external force.

Optionally, the sealing assembly includes at least one first sealing ring sleeved on the rotating shaft and a first abutting member abutting against the first sealing ring, and the first sealing ring seals the hole wall of the sealing hole under the thrust action of the first abutting member.

Optionally, the seal assembly further comprises a spacer ring, the spacer ring spacing the first seal ring apart.

Optionally, the seal hole is provided as a stepped hole, the seal assembly further includes a second abutting part and at least one second seal ring, the second abutting part pushes against the stepped surface of the stepped hole, the at least one second seal ring abuts against the stepped surface of the stepped hole, the first seal ring abuts against the second abutting part, and the outer diameter of the first seal ring is smaller than the outer diameter of the second seal ring.

Optionally, the valve seat includes a base and a cover plate detachably connected to the base, the valve hole is opened in the cover plate, and the valve core is rotatably assembled to the base.

Optionally, the valve seat further comprises an elastic pad installed between the base and the cover plate, and the elastic pad elastically deforms and adjusts the joint portion of the cover plate and the valve element.

After adopting the structure, compared with the prior art, the invention has the advantages that:

the matching surface of the valve seat and the valve core is a positive conical surface, so that the machining precision is high, and the matching performance is good. When the valve core is sealed on the valve seat, the central line of the valve core coincides with the axis of the valve hole, the matching tightness is good, and the sealing effect is good. Set up seal assembly at the cooperation position of axis of rotation and disk seat for the liquid of guide oozes the butterfly valve in the isolated valve hole, and isolated effectual.

Drawings

The invention is further illustrated with reference to the following figures and examples:

FIG. 1 is a schematic structural view of a positive cone positive butterfly valve according to the present invention.

FIG. 2 is a schematic cross-sectional view of a front cone positive butterfly valve according to the present invention.

Fig. 3 is an enlarged schematic view of a structure at a in fig. 2.

Fig. 4 is a schematic structural view of the valve core closed to the valve hole in the present invention.

Fig. 5 is a schematic structural view of the valve core opening part of the valve hole in the invention.

Fig. 6 is a structural view illustrating the valve core fully opening the valve hole in the present invention.

Fig. 7 is a schematic perspective view of the valve cartridge of the present invention.

Fig. 8 is a front view schematically showing the structure of the valve body of the present invention.

Fig. 9 is a schematic view of the structure of the valve seat of the present invention.

FIG. 10 is a schematic view of the construction of the bias-cut, right-off-center butterfly valve device of the present invention.

In the figure: a valve seat 10; a valve hole 11; a cover plate 12; a seal hole 121; the rotation hole 122; a base 13; a body portion 131; a support portion 132; a driving section 133; a flow hole 14; a mounting member 15; an elastic pad 16; a valve core 20; an outer right conical surface 21; a plate body portion 22; a boss portion 23; a first void-avoiding portion 24; a second void-avoiding portion 25; mounting holes 26; a rotating shaft 30; a first rotating shaft 31; a second rotating shaft 32; a seal assembly 40; a first abutment member 41; the first seal ring 42; a spacer ring 43; a second abutment 44; a second seal ring 45; a drive assembly 50; the nut 60 is locked.

Detailed Description

The following description is only a preferred embodiment of the present invention, and does not limit the scope of the present invention.

Examples, see fig. 1-6: the positive cone positive butterfly valve comprises a valve seat 10, a valve core 20 and a rotating shaft 30 fixedly arranged on the valve core 20, wherein the valve seat 10 is provided with a valve hole 11, the inner wall surface of at least part of the valve hole 11 is provided with an inner positive cone surface, the cross section contour line perpendicular to the central line of the valve hole 11 is circular, and the rotating shaft 30 is rotatably connected to the valve seat 10 and drives the valve core 20 to rotate relative to the valve hole 11. The outer side wall of the valve core 20 is provided with an outer positive conical surface 21 matched with the inner positive conical surface, and the center line of the valve core 20 is eccentric with the rotation center line of the rotating shaft 30 by a preset distance. The rotating shaft 30 is driven by an external force to rotate the valve element 20 in a first direction, and the valve element 20 rotates relative to the valve seat 10 and opens the valve hole 11. The rotating shaft 30 drives the valve core 20 to rotate in the second direction under the driving of an external force, the valve core 20 rotates relative to the valve seat 10 until the external positive conical surface 21 of the valve core 20 is sealed and attached to the internal positive conical surface of the valve hole 11, and the central line of the valve core 20 coincides with the axis of the valve hole 11.

The valve hole 11 is arranged on the valve seat 10 and penetrates through the valve seat 10, optionally, the valve hole 11 is integrally formed into a regular conical hole, the inner wall surfaces of the valve hole 11 are respectively formed into an inner regular conical surface, the hole wall of the valve hole 11 forms a circular complete circular outline shape at the position of a transverse section perpendicular to the valve hole 11, the valve hole 11 forms a regular conical righting structure relative to the valve seat 10, and the inner regular conical surface of the valve hole 11 is convenient to process. Alternatively, the valve hole 11 is formed in a stepped hole shape in which a portion of a wall surface of the valve hole 11 that engages with the valve body 20 is formed as an inner normal tapered surface. The taper of the outer positive conical surface 21 of the valve core 20 is the same as that of the inner positive conical surface of the valve hole 11, the rotating shaft 30 drives the valve core 20 to rotate, the outer positive conical surface 21 of the valve core 20 is attached to the inner positive conical surface of the valve hole 11, and the sealing effect is good.

As shown in fig. 8: the central line of the valve core 20 is the axis of the external right conical surface 21, the valve core 20 is attached to the valve hole 11, and the central line of the valve core 20 is overlapped with the axis of the valve hole 11, so that the sealing effect is good. The valve core 20 and the valve hole 11 are both set to be a positive conical surface, so that the machining precision is high, and the sealing effect is good. Alternatively, the eccentricity between the center line of the rotation of the rotating shaft 30 and the center line of the valve element 20 is A, and A is larger than or equal to 1mm and smaller than or equal to 20 mm.

The rotating shaft 30 is fixedly disposed on the valve core 20 and can drive the valve core 20 to rotate, and a rotation center line of the rotating shaft 30 is perpendicular to a center line of the valve core 20 and deviates from the center line by a preset distance. When the rotary shaft 30 rotates in the first direction, the valve spool 20 is biased by the rotary shaft 30 and controls the opening of the valve hole 11. When the rotary shaft 30 rotates in the second direction, the valve body 20 is biased by the rotary shaft 30 and controls the valve hole 11 to be closed. Wherein, the first direction is opposite to the second direction. Alternatively, the rotation shaft 30 controls the valve core 20 to open by a predetermined angle by an external force.

The matching surface of the valve seat 10 and the valve core 20 is a positive conical surface, so that the processing precision is high and the matching performance is good. When the valve core 20 is sealed on the valve seat 10, the central line of the valve core 20 is superposed with the axis of the valve hole 11, the matching tightness is good, and the sealing effect is good.

See fig. 1-3 for: alternatively, the valve core 20 includes a plate portion 22 and a boss portion 23 protruding from one side surface of the plate portion 22, the rotation shaft 30 is fixed to the boss portion 23, and the external regular conical surface 21 is disposed around the outer peripheral wall of the plate portion 22. The boss portion 23 protrudes from one side surface of the plate body portion 22 to form a boss or rib structure, and the rotation shaft 30 is fixed to the boss portion 23 such that the boss portion 23 is spaced apart from the other side surface of the plate body portion 22 by a predetermined distance to form an eccentricity amount.

The outer peripheral wall of the plate body 22 is formed into an outer regular conical surface 21, and the outer peripheral wall of the plate body 22 is convenient to process. Alternatively, the surface of the plate portion 22 is formed as a slope inclined from the center line of the valve body 20 so as to avoid an interference portion with the inner wall surface of the valve hole 11 during rotation of the valve body 20.

See fig. 4-8 for illustration: in an alternative embodiment, the plate portion 22 is a plate-shaped structure, the valve element 20 further includes a first space-avoiding portion 24 and a second space-avoiding portion 25, which are in a shape of a chamfer, the first space-avoiding portion 24 and the second space-avoiding portion 25 are respectively disposed at edges of two ends of the plate portion 22, and the plate portion 22 avoids an interference portion with an inner normal conical surface of the valve seat 10 during rotation of the valve element 20 through the first space-avoiding portion 24 and the second space-avoiding portion 25.

The first space-avoiding portion 24 and the second space-avoiding portion 25 are designed to be chamfered and located at the edge of the plate body portion 22, the first space-avoiding portion 24 is distributed at one end of the plate body portion 22, the second space-avoiding portion 25 is located at the other end of the plate body portion 22, and the plate body portion 22 is provided with a convex boss portion 23 at the end. The surface of the plate portion 22 is a plane perpendicular to the center line of the valve body 20, and the valve body 20 avoids an interference portion with the inner wall surface of the valve hole 11 by the first and second escape portions 24 and 25 during rotation of the valve body 20.

In an alternative embodiment, the first space-avoiding portions 24 are symmetrically distributed on the plate body portion 22 and the chamfer size of the first space-avoiding portions 24 gradually decreases from the first end to the other end of the symmetry axis, wherein the symmetry axis of the first space-avoiding portions 24 is perpendicular to the revolution center line of the rotation shaft 30. Alternatively, the second space-avoiding portions 25 are symmetrically distributed on the plate body portion 22 and the chamfer size of the second space-avoiding portions 25 is gradually decreased from the first end to the other end of the symmetry axis, wherein the symmetry axis of the second space-avoiding portions 25 is perpendicular to the revolution center line of the rotation shaft 30.

The symmetry axis of the first space-avoiding portion 24 is in the same plane as the symmetry axis of the second space-avoiding portion 25, and the rotation axis 30 is perpendicular to the plane. The symmetry axis has two intersection points with the edge of the first recess 24 in the plate body portion 22, including a first large end and a first small end, wherein the chamfer dimension of the first large end is greater than the chamfer dimension of the first small end. During the rotation of the valve core 20, the chamfer size of the first hollow avoiding portion 24 gradually decreases from the first large end to the first small end, and the first large end of the first hollow avoiding portion 24 is located in the direction in which the valve core 20 rotates into the valve hole 11.

Accordingly, the symmetry axis has two intersection points with the edge of the second recess 25 in the plate body portion 22, including a second large end and a second small end, wherein the chamfer dimension of the second large end is greater than the chamfer dimension of the second small end. During the rotation of the valve core 20, the chamfer dimension of the second hollow-avoiding portion 25 gradually decreases from the second large end to the second small end, and the second large end of the second hollow-avoiding portion 25 is located in the direction in which the valve core 20 rotates out of the valve hole 11. And, the first and second large ends are provided at two opposite corners of the plate body portion 22.

In one embodiment, the boss portion 23 includes a rib protruding from the plate body portion 22, and the rotating shaft 30 is fixed to the rib with a predetermined distance between a center line of rotation of the rotating shaft 30 and a top surface of the plate body portion 22. The convex rib is a convex structure formed by locally protruding the surface of the plate body part 22, and the rotating shaft 30 is fixed at two ends of the convex rib, so that the connection is convenient. The boss portion 23 has a convex structure, so that the interference portion between the valve element 20 and the valve seat 10 during rotation is reduced, and the deflection effect is good. It should be noted that the valve body 20 may not be provided with the boss portion 23, and the rotation shaft 30 may be directly fixed to the plate portion 22 and may be offset from the surface of the plate portion 22 by a predetermined distance.

In one embodiment, the rotating shaft 30 is detachably coupled to the valve core 20. The valve core 20 is provided with a mounting hole 26, the rotating shaft 30 is fixed in the mounting hole 26 and locked on the valve core 20 through a connecting piece such as a bolt and a fastener, and the rotating shaft 30 is convenient to mount. The assembly process of the valve core 20 is as follows: the valve body 20 is closed at the valve hole 11, the rotating shaft 30 penetrates the valve seat 10 and is inserted into the mounting hole 26, and is locked to the valve body 20 by a connector, and the mounting position between the valve body 20 and the valve seat 10 and the rotating shaft 30 is firm.

Alternatively, the outer positive tapered surface 21 of the plate body portion 22 is in sealing engagement with the inner positive tapered surface of the valve seat 10, and the rotation shaft 30 penetrates through the valve seat 10 and is inserted into the boss portion 23, so that the valve element 20 can rotate relative to the valve seat 10 and control the opening or closing of the valve hole 11, and the operation flexibility is good.

The rotating shaft 30 is fixed to the valve core 20, wherein the rotating shaft 30 may be a unitary shaft penetrating the valve core 20. Alternatively, the rotating shaft 30 may be a separate structure including two rotating shafts coaxially disposed. In an embodiment, the rotating shaft 30 includes a first rotating shaft 31 and a second rotating shaft 32 coaxially disposed and fixed to the valve core 20, the first rotating shaft 31 penetrates the valve seat 10 and can drive the valve core 20 to rotate under the driving of an external force, and the second rotating shaft 32 is rotatably connected to the valve seat 10. The rotating shaft 30 is a split structure, and the first rotating shaft 31 and the second rotating shaft 32 are inserted from two ends of the valve seat 10 and connected to the valve core 20, so that the installation is convenient and the positioning accuracy is high.

See fig. 2 and 9 for illustration: the valve seat 10 may be formed as a unitary structure and may be formed from a unitary material, such as die cast, machined from a profile, or the like. Alternatively, the valve seat 10 is formed by combining a plurality of components. In one embodiment, the valve seat 10 includes a base 13 and a cover plate 12 detachably coupled to the base 13, the rotary shaft 30 is mounted to the base 13, and the valve hole 11 is opened in the cover plate 12.

Optionally, the base 13 is provided with a flow bore 14, the smallest outer profile dimension of the flow bore 14 being larger than the largest inner diameter of the valve bore 11.

The cover plate 12 is detachably connected with the base 13, so that the cover plate 12 and the base 13 are fixed into a whole, the corresponding positions of the cover plate 12 and the base 13 are respectively processed, the corresponding valve body function is realized, the processing amount can be reduced, the processing efficiency is improved, and the cost is reduced. Optionally, the valve hole 11 penetrates the cover plate 12 and is located at the center of the cover plate 12. The inner wall surface of the valve hole 11 is an inner positive conical surface, and the processing is simple and the processing precision is high. Alternatively, the cover plate 12 is provided as a flange structure, and correspondingly, a corresponding step hole is provided in the valve seat 10 for guiding and positioning the cover plate 12.

A flow opening 14 is provided in the valve seat 10, and the flow opening 14 is used to guide the fluid flow controlled by the valve body. Meanwhile, during the rotation of the spool 20, a portion of the spool 20 rotates into the flow hole 14. The flow hole 14 can be a circular hole or a hole with other shapes, and the smallest outer contour dimension of the flow hole 14 is larger than the largest inner diameter of the valve hole 11, so that the valve core 20 can be rotated into the flow hole 14 to avoid interference, and the processing is convenient.

See fig. 2 and 3 for illustration: in one embodiment, the valve seat 10 further includes an elastic pad 16 installed between the base 13 and the cover 12, and the elastic pad 16 can elastically adjust the joint position of the cover 12 and the valve element 20. The elastic pad 16 is made of elastic material, the elastic pad 16 is arranged between the base 13 and the cover plate 12, when the valve core 20 rotates and abuts against the cover plate 12, the cover plate 12 can slightly move relative to the base 13, so that the outer positive conical surface of the valve core 20 and the inner positive conical surface of the valve hole 11 abut against each other and the sealing tightness is kept, and the sealing effect is good. The cover plate 12 moves relatively under the slight change of the elastic cushion 16, so that the valve core 20 can rotate or be in sealing fit with the valve seat 10, and the rotation flexibility is good. Alternatively, the resilient pad 16 may be provided as a resilient sealing ring or other cross-sectional shape. Optionally, an elastic pad 16 is disposed at the abutting surface of the base 13 and the cover 12.

See fig. 2 and 3 for illustration: in one embodiment, the valve seat 10 further includes a sealing assembly 40 installed in the base 13 and sleeved on the rotating shaft 30, and the rotating shaft 30 is connected to the base 13 through the sealing assembly 40 in a sealing manner. The sealing assembly 40 is installed in the base 13 for improving sealability between the valve seat 10 and the rotating shaft 30.

In one embodiment, the valve seat 10 defines a sealing hole 121, the sealing element 40 is inserted into the sealing hole 121, and the sealing element 40 elastically deforms and sealingly fits against the hole wall of the sealing hole 121 under the action of an external force.

The valve seat 10 is provided with a rotation hole 122 for mounting the rotation shaft 30, and the rotation hole 122 is loosely fitted with the rotation shaft 30. The sealing hole 121 is opened in the valve seat 10 and forms a stepped hole structure with the rotating hole 122, and the sealing assembly 40 is installed in the sealing hole 121 and elastically deforms under the action of an external force, so that the sealing assembly 40 seals a gap between the rotating shaft 30 and the sealing hole 121, and liquid guided by the valve body is prevented from permeating into the valve seat 10. The seal assembly 40 is elastically deformed by an external force, for example, an end cap is mounted on the valve seat 10, and the end cap pushes against the seal assembly 40 to be elastically deformed. Or, the rotating shaft 30 is provided with a lock nut, and the lock nut directly or indirectly abuts against the sealing component 40 and pushes the sealing component 40 to be elastically deformed.

In an alternative embodiment, the sealing assembly 40 includes at least one first sealing ring 42 sleeved on the rotating shaft 30 and a first abutting member 41 abutting against the first sealing ring 42, and the first sealing ring 42 is sealed on the hole wall of the sealing hole 121 under the thrust action of the first abutting member 41. The first sealing ring 42 is provided with one or more than one and is sequentially sleeved on the rotating shaft 30, the first sealing ring 42 at one end is abutted against the end face of the sealing hole 121, and the first abutting piece 41 is abutted against the first sealing ring 42 at the other end and pushes the first sealing ring 42 to be tightly attached to the rotating shaft 30 and the hole wall of the sealing hole 121. In an alternative embodiment, the first sealing ring 42 is made of an elastic material such as rubber. Optionally, the first sealing ring 42 is made of graphite or the like for blocking the penetration of liquid such as tar.

Alternatively, the first contact member 41 is configured as a sleeve, and the first contact member 41 is in contact with the first seal ring 42 by an external force. Alternatively, the first abutting member 41 is a flange-sleeve structure, and includes a cylindrical body portion abutting on the first sealing ring 42 and a flange portion disposed outside the valve seat 10 and slidably disposed on the screw. The screw is fixed to the valve seat 10, and a lock nut 60 is attached to the screw. The locking nut 60 urges the flange portion to move to tighten the cartridge body against the first seal ring 42.

In an alternative embodiment, the seal assembly 40 further includes a spacer ring 43, the spacer ring 43 spacing the first seal ring 42 apart. The first sealing rings 42 are provided with two or more than two, and the spacing ring 43 is sleeved on the rotating shaft 30 and separates the plurality of first sealing rings 42 to form a first sealing part and a second sealing part. The spacer ring 43 can enlarge the sealing range of the sealing assembly 40, realize multi-section sealing, and has good sealing effect and high blocking efficiency. Alternatively, the spacer ring 43 is provided in a tubular structure, and a groove for reducing the contact area of the spacer ring 43 with the valve seat 10 and the rotating shaft 30 is provided on the outer side wall of the spacer ring 43.

In an embodiment, the seal hole 121 is configured as a stepped hole, and the seal assembly 40 further includes a second abutting member 44 and at least one second seal ring 45, wherein the second abutting member 44 pushes the at least one second seal ring 45 against a stepped surface of the stepped hole. The first seal ring 42 abuts against the second abutment member 44, and the outer diameter of the first seal ring 42 is smaller than the outer diameter of the second seal ring 45. The sealing hole 121 is provided with a multistage stepped hole structure, i.e., the sealing hole 121 and the rotating hole 122 are provided with a one-step stepped structure, and further, the sealing hole 121 is provided with a stepped hole structure, and accordingly, a two-step stepped hole structure is formed between the stepped hole and the rotating hole 122.

The outer diameter of the second sealing ring 45 is smaller than that of the first sealing ring 42, and accordingly, the diameter of the sealing hole 121 where the second sealing ring 45 is located is smaller than that of the sealing hole 121 where the first sealing ring 42 is located. The sealing assembly 40 extends from the valve seat 10 toward the valve core 20, and accordingly, the second sealing ring 45 is close to one side of the valve core 20 to realize a first sealing of the valve core 20. Alternatively, the second seal ring 45 is made of an elastic material such as rubber. Optionally, the second sealing ring 45 is made of graphite or the like for blocking the penetration of liquid such as tar. Alternatively, the second abutment member 44 is provided as a sleeve structure, which may be provided as a tubular structure or a flange-tubular structure.

See fig. 2, 9 and 10 for an illustration: in one embodiment, the base 13 includes a main body 131, a supporting portion 132 disposed at one end of the main body 131, and a driving portion 133 disposed at the other end of the main body 131, one end of the rotating shaft 30 is connected to the supporting portion 132 in an inserting manner, the other end extends through the driving portion 133 and extends outward, and the flow hole 14 extends through the main body 131.

The flow bore 14 extends through the body portion 131 to allow the valve cartridge 20 to rotate within the flow bore 14 and direct the flow of liquid along the flow bore 14. The support part 132 and the driving part 133 are respectively located at both ends of the flow hole 14 and support and define the rotation shaft 30, wherein the rotation shaft 30 is plug-connected to the support part 132 and the end of the support part 132 is sealed. The rotating shaft 30 penetrates through the driving portion 133 and extends outward, so that the rotating shaft 30 can be connected to a power mechanism, so that the rotating shaft 30 drives the valve core 20 to rotate under the driving of the power mechanism.

Optionally, the driving portion 133 is provided with a mounting 15, which mounting 15 is used for fixing the power structure. Optionally, the mounting member 15 is removably connected to the body portion 131. For example, the mounting device 15 is a fixing bracket formed by sheet metal working, a fixing column fixed to the body portion 131, or other profile structure.

The positive cone positive butterfly valve disclosed by the embodiment is applied to a valve body device to form a fixed flow metering valve or a flow adjustable regulating valve. In one embodiment, the oblique cut positive eccentric butterfly valve device comprises a positive cone positive butterfly valve and a driving assembly 50 drivingly connected to the positive cone positive butterfly valve, wherein the positive cone positive butterfly valve comprises a valve seat 10, a valve core 20, a rotating shaft 30 fixedly arranged on the valve core 20, and a sealing assembly 40 sleeved on the rotating shaft 30 and sealing between the valve seat 10 and the rotating shaft 30. The valve seat 10 is provided with a valve hole 11, at least part of the inner wall surface of the valve hole 11 is provided with an inner right conical surface, and the rotating shaft 30 is rotatably connected to the valve seat 10. The valve core 20 is installed in the valve hole 11, an outer side wall of the valve core 20 is provided with an outer positive conical surface 21 matched with the inner positive conical surface, the center line of the valve core 20 is eccentric with the rotation center line of the rotating shaft 30 by a preset distance, and the center line of the valve core 20 is overlapped with the axis of the valve hole 11. The rotating shaft 30 rotates the valve element 20 in a first direction under the driving of the driving assembly 50, and the valve element 20 rotates relative to the valve seat 10 and opens the valve hole 11. The rotating shaft 30 drives the valve element 20 to rotate in the second direction under the driving of the driving assembly 50, the valve element 20 rotates relative to the valve seat 10, and the outer positive conical surface 21 of the valve element 20 is in sealing fit with the inner positive conical surface of the valve hole 11.

The driving assembly 50 is coupled to the rotating shaft 30 to drive the valve core 20 to rotate. Wherein the rotation angle of the valve core 20 is related to the driving angle of the driving assembly 50. In an alternative embodiment, the rotation angle of the valve core 20 ranges from 0 to 90 degrees. The driving assembly 50 may be configured to be a motor, a solenoid valve, etc., and the driving assembly 50 controls the valve core 20 to open by a predetermined angle.

For example, the drive assembly 50 controls the valve spool 20 to rotate in a first direction such that the valve spool 20 rotates 90 degrees relative to the valve seat 10 and the positive cone positive butterfly valve is in a maximum open position.

Alternatively, the driving assembly 50 is provided with a control assembly and a power element, the control assembly can control the valve core 20 to open a preset angle according to a control command, for example, the control assembly controls the power element to operate, so that the power element drives the valve core 20 to rotate towards a first direction, so that the valve core 20 rotates relative to the valve seat 10 by a preset angle, for example, 15 degrees, 30 degrees, 45 degrees, 60 degrees, 90 degrees, the positive-cone positive-position butterfly valve can be opened to the preset angle according to a command, and the flow regulation is convenient.

Butterfly valves are widely used at present, and other structures and principles are the same as those in the prior art, and are not described in detail here.

Claims (10)

1. A beveling and righting eccentric butterfly valve device is characterized by comprising a righting cone righting butterfly valve and a driving assembly which is connected with the righting cone righting butterfly valve in a driving mode, wherein the righting cone righting butterfly valve comprises a valve seat, a valve core, a rotating shaft fixedly arranged on the valve core and a sealing assembly which is sleeved on the rotating shaft and sealed between the valve seat and the rotating shaft;

the rotating shaft drives the valve core to rotate towards a first direction under the driving of the driving assembly, and the valve core rotates relative to the valve seat and opens the valve hole;

the rotating shaft drives the valve core to rotate towards a second direction under the driving of the driving assembly, the valve core rotates relative to the valve seat until the outer positive conical surface of the valve core is sealed and attached to the inner positive conical surface of the valve hole, and the central line of the valve core is overlapped with the axis of the valve hole.

2. The miter cut positive offset butterfly valve device of claim 1, wherein the valve core includes a plate body portion and a boss portion protruding from a side surface of the plate body portion, the rotation shaft is secured to the boss portion and has a center line of rotation spaced a predetermined distance from a top surface of the plate body portion, and the outer positive taper is formed around an outer peripheral wall of the plate body portion.

3. The oblique cutting positive eccentric butterfly valve device according to claim 2, wherein the plate body is a plate-shaped structure, the valve body further comprises a first hollow-avoiding portion and a second hollow-avoiding portion which are in a shape of a chamfer, the first hollow-avoiding portion and the second hollow-avoiding portion are respectively arranged at edges of two ends of the plate body, and the plate body avoids an interference portion with an inner positive conical surface of the valve seat in a rotation process of the valve body through the first hollow-avoiding portion and the second hollow-avoiding portion.

4. The miter cut positive offset butterfly valve device of claim 1, wherein the shaft includes a first shaft and a second shaft coaxially disposed and secured to the spool, the first shaft extending through the valve seat and being drivingly connected to the drive assembly, the second shaft being rotatably connected to the valve seat.

5. The bias-cut, right-off center butterfly valve device of claim 1, wherein the valve seat defines a sealing aperture, the sealing element is inserted into the sealing aperture and elastically deforms under an external force and sealingly engages a wall of the sealing aperture.

6. The miter cut positive offset butterfly valve device of claim 5, wherein the seal assembly includes at least a first seal ring sleeved on the rotation shaft and a first abutting member abutting against the first seal ring, and the first seal ring seals against a wall of the seal hole under a thrust force of the first abutting member.

7. The miter cut positive offset butterfly valve device of claim 6, wherein the seal assembly further comprises a spacer ring that spaces the first seal ring apart.

8. The miter cut positive offset butterfly valve apparatus of claim 6, wherein the seal bore is configured as a stepped bore, the seal assembly further comprising a second abutment member and at least one second seal ring, the second abutment member urging the at least one second seal ring into abutment with a stepped surface of the stepped bore, the first seal ring abutting the second abutment member, the first seal ring having an outer diameter that is smaller than an outer diameter of the second seal ring.

9. The miter cut positive offset butterfly valve device of claim 1, wherein the valve seat includes a base and a cover plate removably attached to the base, the valve opening being defined in the cover plate, and the valve core being rotatably mounted to the base.

10. The miter cut positive offset butterfly valve device of claim 9, wherein the valve seat further comprises an elastic pad mounted between the base and the cover plate, the elastic pad elastically deforming and adjusting a portion of the cover plate that engages the valve element.

Images