CN215596429U

CN215596429U - Novel triple offset butterfly valve

Info

Publication number: CN215596429U
Application number: CN202121788450.3U
Authority: CN
Inventors: 孟翠娥; 兰大伟; 李学金; 周鹤松; 李栋; 毕建杰; 邸小艳
Original assignee: Qinye Engineering & Technology Beijing Co ltd
Current assignee: Qinye Engineering & Technology Beijing Co ltd
Priority date: 2021-08-02
Filing date: 2021-08-02
Publication date: 2022-01-21
Anticipated expiration: 2031-08-02

Abstract

The application relates to the field of rotary valves, in particular to a novel triple eccentric butterfly valve which comprises a valve body, a butterfly plate and a sealing mechanism, wherein the butterfly plate is arranged inside the valve body; the sealing mechanism comprises a sealing ring and a sealing strip, the valve body is provided with a valve cavity, the sealing ring is fixedly connected to the circumferential position of the butterfly plate, the sealing strip is fixedly connected to the circumferential position of the inner wall of the valve cavity, the edge part of the sealing ring is provided with a V-shaped seal with a triangular cross section, the sealing strip is provided with a V-shaped groove strip, the V-shaped groove with a triangular cross section is formed in the V-shaped groove strip, and the surface of the V-shaped seal is tightly attached to the inner wall of the V-shaped groove. This application can improve the sealed effect of three eccentric butterfly valves.

Description

Novel triple offset butterfly valve

Technical Field

The utility model belongs to the technical field of gyration type valve and specifically relates to a novel three eccentric butterfly valves is related to.

Background

The triple eccentric butterfly valve is widely applied to industrial pipelines of metallurgy, electric power, petrochemical industry, municipal construction and the like, and is used for adjusting flow and carrying and breaking fluid.

At present, when a three-eccentric butterfly valve is used, high requirements are provided for the sealing performance of the three-eccentric butterfly valve, and the three-eccentric butterfly valve achieves a good sealing effect through extrusion of a sealing ring and the inner wall of a valve body.

To the correlation technique among the above-mentioned, when sealing washer lateral wall and the extrusion of valve body inner wall, can harm sealing washer and valve body self, and then influence the sealed effect of three eccentric butterfly valves.

Practical new form of content

The application provides a novel three eccentric butterfly valve can improve the sealed effect of three eccentric butterfly valves.

The application provides a novel three eccentric butterfly valve adopts following technical scheme:

a novel triple eccentric butterfly valve comprises a valve body, a butterfly plate arranged inside the valve body and a sealing mechanism arranged inside the valve body; the sealing mechanism comprises a sealing ring and a sealing strip, the valve body is provided with a valve cavity, the sealing ring is fixedly connected to the circumferential position of the butterfly plate, the sealing strip is fixedly connected to the circumferential position of the inner wall of the valve cavity, the edge part of the sealing ring is provided with a V-shaped seal with a triangular cross section, the sealing strip is provided with a V-shaped groove strip, the V-shaped groove with a triangular cross section is formed in the V-shaped groove strip, and the surface of the V-shaped seal is tightly attached to the inner wall of the V-shaped groove.

By adopting the technical scheme, the contact area between the sealing ring and the sealing strip is increased by the matching of the V-shaped seal and the V-shaped groove, the sealing effect is improved, the cross sections of the V-shaped seal and the V-shaped groove are triangular, the possibility of deflection of the butterfly plate during normal work can be reduced, and the safety performance is improved.

Optionally, the sealing strip still is provided with the circular strip, and circular strip and V groove respectively account for sealing strip circumference half, the sealing washer still is provided with sealing washer and the circular sealing of sealing strip, V-arrangement seals and circular sealing respectively occupy sealing washer circumference half, the circular side surface of keeping away from self center hugs closely with the circular strip one side of keeping away from the valve body.

Through adopting above-mentioned technical scheme, the position that circular sealed can realize circular sealing is hugged closely with the circular strip surface and also can play sealed effect, and does not influence the butterfly plate and open and shut.

Optionally, the width of the circular strip in the axial direction of the valve cavity is greater than the width of the V-groove strip in the axial direction of the valve cavity, the thickness of the circular strip in the radial direction of the valve cavity is less than the thickness of the V-groove strip in the radial direction of the valve cavity, and the surface of one side of the circular strip, which is far away from the valve rod, is closer to the edge of the valve cavity than the surface of one side of the V-groove strip, which is far away from the valve rod.

Through adopting above-mentioned technical scheme, the width of circular strip along valve pocket axis direction is greater than the width of V groove strip along valve pocket axis direction, and the thickness of circular strip along the radial direction of valve pocket is less than the thickness of V groove strip along the radial direction of valve pocket for circular area of contact with the sealing strip reaches the maximum value, realizes better sealed effect.

Optionally, the abutting positions of the sealing ring and the sealing strip are both smooth surfaces.

Through adopting above-mentioned technical scheme, sealing washer and sealing strip butt position are smooth surface, and then when sealing washer and sealing strip butt were sealed, the space between reducible sealing washer and the sealing strip improves sealed effect.

Optionally, the sealing mechanism further comprises a pressing plate, a pressing plate peak is arranged on the surface of one side of the pressing plate, a pressing groove is arranged on the surface of one side of the sealing ring, the pressing plate is abutted against the sealing ring, and the surface of the pressing plate peak is attached to the inner wall of the pressing groove; the butterfly plate is provided with a fixed plate and a connecting plate, the connecting plate is sleeved at the circumferential position of the butterfly plate, and the connecting plate is fixedly connected with the butterfly plate; the pressing plate and the sealing ring are fixedly connected between the fixing plate and the connecting plate.

Through adopting above-mentioned technical scheme, the setting that compresses tightly groove and clamp plate peak makes the area of contact grow between clamp plate and the sealing washer for the connection between clamp plate and the sealing washer is more stable fastening, and the sealing washer is difficult for droing.

Optionally, a safety mechanism is arranged on one side surface, away from the valve body, of the round bar, the safety mechanism comprises a baffle, the baffle is fixedly connected to one side surface, away from the valve body, of the round bar, and the baffle abuts against the surface of the sealing ring, facing the valve rod, of one side surface.

Through adopting above-mentioned technical scheme, the rotation of restriction butterfly plate is pressed to the fixed plate of baffle butt, has improved the security of butterfly plate when closing.

Optionally, the safety mechanism is further provided with a plurality of contraction components, the contraction components are uniformly distributed at the circumferential positions of the circular strips, and one side surface of the circular seal, which is far away from the baffle, is abutted against the outer side of the contraction components.

Through adopting above-mentioned technical scheme, shrink part presss from both sides the butterfly plate with the baffle from both sides tightly for do not take place to rotate when the butterfly plate closes, can improve the security, also can improve sealed effect.

Optionally, a plurality of contraction grooves are radially formed in the circumferential position of the circular strip along the valve cavity, the contraction component comprises a contraction spring and a contraction block, one end of the contraction spring is fixedly connected to the bottom of the contraction groove, the other end of the contraction spring is fixedly connected to the surface of the contraction block, the other end of the contraction block is located outside the contraction groove, and the center of the contraction block is located inside the contraction groove.

Through adopting above-mentioned technical scheme, when the butterfly plate was opened, the butterfly plate extrusion shrink piece, the shrink piece will do all can conduct to shrink on the spring for shrink spring compression shortens, drives the shrink piece and moves to shrink tank bottom along the shrink tank, and the butterfly plate is opened.

To sum up, this application includes following at least one novel three eccentric butterfly valve beneficial technological effect:

1. this application has increased the area of contact of sealing washer with the sealing strip through the cooperation that adopts V-arrangement to seal and V-arrangement groove, and the cross section that V-arrangement sealed and V-arrangement groove all is triangle-shaped, can reduce the butterfly plate normal during operation and take place the possibility of deflecting, and can improve sealed effect after the increase area of contact.

Drawings

FIG. 1 is a schematic structural diagram of a novel triple offset butterfly valve according to an embodiment of the present disclosure;

FIG. 2 is a cross-sectional view of a novel triple offset butterfly valve in accordance with an embodiment of the present disclosure;

FIG. 3 is an exploded view intended to emphasize the manner in which the seal ring is attached to the butterfly plate;

FIG. 4 is an enlarged view of a portion of FIG. 2 at A;

FIG. 5 is an enlarged view of a portion of FIG. 2 at B;

fig. 6 is a schematic view of the structure with the butterfly plate and the valve stem removed.

Description of reference numerals: 1. a valve body; 11. a valve cavity; 2. an adjustment mechanism; 21. a valve stem; 3. a butterfly plate; 31. a connecting plate; 32. a fixing plate; 4. a sealing mechanism; 41. pressing a plate; 411. pressing a plate peak; 42. a seal ring; 421. a compaction groove; 422. v-shaped sealing; 423. circular sealing; 43. a sealing strip; 431. a circular strip; 4311. a contraction groove; 432. v-shaped groove strips; 4321. a V-shaped groove; 5. a safety mechanism; 51. a baffle plate; 52. a contracting member; 521. a retraction spring; 522. and (5) shrinking the block.

Detailed Description

The present application is described in further detail below with reference to figures 1-6.

The embodiment of the application discloses a novel triple offset butterfly valve. Referring to fig. 1, a novel triple offset butterfly valve includes a valve body 1, an adjusting mechanism 2 disposed in the valve body 1, a butterfly plate 3 disposed in the valve body 1, a sealing mechanism 4 disposed in the valve body 1, and a safety mechanism 5 disposed in the valve body 1. The adjusting mechanism 2 is used for adjusting the rotating angle of the butterfly plate 3, so that the angle between the butterfly plate 3 and the valve body 1 is controlled to control the butterfly plate 3 to be opened and closed, and the butterfly plate 3 is used for controlling fluid to pass through the butterfly plate 3, the sealing mechanism 4 enables the butterfly plate 3 and the valve body 1 to be closed to be tighter, the possibility that the fluid flows through a gap between the butterfly plate 3 and the inner wall of the valve body 11 when the butterfly plate 3 is closed is reduced, the safety mechanism 5 is connected with the butterfly plate 3, the safety mechanism 5 can enhance the sealing effect, and the sealing effect is better.

Referring to fig. 2 and 3, the valve body 1 is provided with a valve cavity 11, the valve cavity 11 is a cylindrical hole, the butterfly plate 3 is located inside the valve cavity 11, and the center position of the butterfly plate 3 is deviated from the center position of the valve body 1. The adjusting mechanism 2 is provided with a valve rod 21, the valve rod 21 penetrates through the valve body 1 and the butterfly plate 3 along the axial direction perpendicular to the valve cavity 11, the valve rod 21 is located on one side of the butterfly plate 3 close to the central position of the valve body 1, the valve rod 21 penetrates through the butterfly plate 3, and the valve rod 21 is fixedly connected with the butterfly plate 3, so that the butterfly plate 3 can rotate inside the valve cavity 11 by taking the valve rod 21 as an axis.

Referring to fig. 3 and 4, a connecting plate 31 is fixedly connected to a circumferential position of the butterfly plate 3, the connecting plate 31 is located on one side of the central position of the butterfly plate 3 away from the valve rod 21, the sealing mechanism 4 includes a pressing plate 41 and a sealing ring 42, the pressing plate 41 and the sealing ring 42 are annular components, the pressing plate 41 and the sealing ring 42 are sleeved on the circumferential position of the butterfly plate 3, a distance from an inner diameter to an outer diameter of the pressing plate 41 is the same as a distance from an inner diameter to an outer diameter of the sealing ring 42, the distance from the inner diameter to the outer diameter of the pressing plate 41 is greater than a width of the connecting plate 31, a side surface of the sealing ring 42 abuts against a side surface of the connecting plate 31 away from the valve rod 21, and the pressing plate 41 abuts against a side surface of the sealing ring 42 away from the connecting plate 31. The sealing ring 42 can be made in a continuous cutting mode, the service life of the sealing ring 42 is prolonged, a pressing groove 421 is formed in the edge of one side surface, away from the connecting plate 31, of the sealing ring 42, the section of the pressing groove 421 is triangular, a pressing plate peak 411 which can be attached to the inner wall of the pressing groove 421 is arranged on the edge of the abutting surface of the pressing plate 41 and the sealing ring 42, the butterfly plate 3 is provided with the fixing plate 32, the fixing plate 32 is a circular plate, the diameter of the circular plate is the same as the outer diameter of the pressing plate 41, the edge of the fixing plate 32 is attached to one side surface, away from the sealing ring 42, of the pressing plate 41, the central portion of the fixing plate 32 is attached to the surface of the butterfly plate 3, and the fixing plate 32, the pressing plate 41, the sealing ring 42 and the connecting plate 31 are sequentially connected together through bolts.

When the fixing plate 32, the pressing plate 41, the sealing ring 42 and the connecting plate 31 are fixed by bolts, the contact area between the pressing plate 41 and the sealing ring 42 is increased by the cooperation of the pressing groove 421 and the pressing plate peak 411, and the sealing ring 42 and the pressing plate 41 are fixed more firmly and stably.

Referring to fig. 2 and 4, the sealing ring 42 is provided with a V-shaped seal 422, the V-shaped seal 422 is located inside one side surface of the sealing ring 42 facing the connecting plate 31, the cross section of the V-shaped seal 422 is triangular, and the center of the V-shaped seal 422 coincides with the center of the sealing ring 42. The valve body 1 is in valve chamber 11 inner wall circumference fixedly connected with sealing strip 43, and sealing strip 43 and sealing washer 42 butt, and sealing strip 43 includes V groove strip 432, and V groove strip 432 is seted up towards one side surface of sealing washer 42 and is sealed 422 surface laminating's V-arrangement groove 4321 with the V-arrangement.

Referring to fig. 2 and 5, the sealing ring 42 is further provided with a circular seal 423, the circular seal 423 is located on a side surface of the sealing ring 42 facing the connecting plate 31, the V-shaped seal 422 and the circular seal 423 respectively occupy half of the circumferential direction of the sealing ring 42, a side surface of the circular seal 423 facing the connecting plate 31 is a plane, and the thickness of the circular seal 423 in a direction perpendicular to the sealing ring 42 is equal to the distance from the vertex of the triangular section of the V-shaped seal 422 to the base of the triangular section. The sealing strip 43 is further provided with a circular strip 431, the circular strip 431 and the V-groove strip 432 respectively account for half of the circumferential direction of the sealing strip 43 by taking the direction parallel to the valve rod 21 as a boundary, and one side of the circular strip 431 departing from the valve body 1 is abutted with the circumferential outer wall of the circular seal 423.

Referring to fig. 4 and 6, the width of the round bar 431 in the axial direction of the valve chamber 11 is greater than the width of the V-groove bar 432 in the axial direction of the valve chamber 11, the thickness of the round bar 431 in the radial direction of the valve chamber 11 is less than the thickness of the V-groove bar 432 in the radial direction of the valve chamber 11, and the side surface of the round bar 431 facing the seal ring 42 is closer to the edge of the valve chamber 11 than the side surface of the V-groove bar 432 facing the seal ring 42. One side surface of the connecting plate 31 away from the center thereof abuts against one side surface of the V-groove strip 432 away from the valve body 1.

The sealing effect is played in the cooperation of sealing washer 42 and sealing strip 43, and sealing washer 42 is smooth plane with sealing strip 43 contact segment for reach better sealed effect, V-arrangement seals 422 and V-arrangement groove 4321 cooperation makes the area of contact grow between sealing washer 42 and the sealing strip 43, and because the butt in 422 triangle-shaped cross-section and the triangle-shaped cross-section of V-arrangement groove 4321 is sealed to the V-arrangement, makes butterfly plate 3 be difficult for taking place to deflect, improves sealed effect.

Referring to fig. 5 and 6, the safety mechanism 5 includes a baffle 51 and a contracting member 52, the baffle 51 has a trapezoidal cross section, the baffle 51 is fixedly connected to a side surface of the circular bar 431 facing the packing 42, and the surface of one side of the baffle 51 facing the valve rod 21 is abutted against the surface of the sealing ring 42, a plurality of contraction grooves 4311 are radially arranged on the edge of one side of the circular bar 431 facing the baffle 51 along the valve cavity 11, the plurality of contraction grooves 4311 are uniformly distributed at the circumferential position of the circular bar 431, a contraction part 52 is arranged in the contraction groove 4311, the contraction part 52 comprises a contraction spring 521 and a contraction block 522, one end of the contraction spring 521 is fixedly connected to the bottom of the contraction groove 4311, the other end of the contraction spring 521 is fixedly connected to the bottom of the contraction block 522, the center of the contraction block 522 is positioned in the contraction groove 4311, and the top of the contraction block 522 is located outside the notch of the contraction groove 4311, the section of the contraction block 522 is trapezoidal, and the trapezoidal inclined surface part of the contraction block 522 abuts against the side wall of the sealing ring 42 away from the edge of the valve body 1.

When the butterfly plate 3 is closed, the sealing ring 42 abuts against the baffle 51 and the contraction block 522 along the two side surfaces in the axial direction of the valve cavity 11 respectively, the contraction block 522 and the baffle 51 clamp the sealing ring 42, so that one side of the circular seal 423 is not easy to rotate, the sealing effect is improved, when the butterfly plate 3 is opened, the baffle 51 limits only one side of the butterfly plate 3, which is close to the V-shaped groove strip 432, to rotate towards the outside of the valve cavity 11, the contraction part 52 is extruded by the sealing ring 42, the contraction spring 521 is compressed, the contraction block 522 moves towards the bottom of the contraction groove 4311, and the butterfly plate 3 rotates.

The implementation principle of the novel triple eccentric butterfly valve of the embodiment of the application is as follows: when the butterfly plate 3 is closed, the surface of the V-shaped seal 422 is abutted against the inner wall of the V-shaped groove 4321, one side of the sealing ring 42 close to the edge of the valve body 1 is abutted against one side of the baffle plate 51 close to the valve rod 21, and one side of the sealing ring 42 far away from the edge of the valve body 1 is abutted against the surface of the contraction block 522; when the butterfly plate 3 is opened, the baffle 51 limits only one side of the butterfly plate 3 close to the V-groove strip 432 to rotate towards the outside of the valve cavity 11, the contraction part 52 is pressed by the sealing ring 42, the contraction spring 521 is compressed, the contraction block 522 moves towards the bottom of the contraction groove 4311, and the butterfly plate 3 rotates, so that fluid passes through the valve cavity 11.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. The utility model provides a novel three eccentric butterfly valves, includes valve body (1), sets up in inside butterfly plate (3) of valve body (1), its characterized in that: the sealing device also comprises a sealing mechanism (4) arranged in the valve body (1); sealing mechanism (4) are including sealing washer (42), sealing strip (43), valve body (1) is provided with valve pocket (11), sealing washer (42) fixed connection is in the circumferential position of butterfly plate (3), sealing strip (43) fixed connection is in the circumferential position of the inner wall of valve pocket (11), the marginal portion of sealing washer (42) is provided with the cross section and seals (422) for triangular V-arrangement, sealing strip (43) are provided with V groove strip (432), V groove strip (432) are seted up the cross section and are triangular V-arrangement groove (4321), the surface that V-arrangement sealed (422) is hugged closely with the inner wall of V-arrangement groove (4321).

2. A novel triple offset butterfly valve according to claim 1, wherein: the sealing strip (43) is further provided with a circular strip (431), the circular strip (431) and the V-shaped groove strip (432) respectively occupy one half of the circumferential direction of the sealing strip (43), the sealing ring (42) is further provided with a circular seal (423), the V-shaped seal (422) and the circular seal (423) respectively occupy one half of the circumferential direction of the sealing ring (42), one side surface, away from the center of the circular seal (423), of the circular seal (423) is tightly attached to one side, away from the valve body (1), of the circular strip (431).

3. A novel triple offset butterfly valve according to claim 2, wherein: the width of the round strip (431) along the axial direction of the valve cavity (11) is larger than that of the V-shaped groove strip (432) along the axial direction of the valve cavity (11), the thickness of the round strip (431) along the radial direction of the valve cavity (11) is smaller than that of the V-shaped groove strip (432) along the radial direction of the valve cavity (11), and the surface of one side, far away from the valve rod (21), of the round strip (431) is closer to the edge of the valve cavity (11) than the surface of one side, far away from the valve rod (21), of the V-shaped groove strip (432).

4. A novel triple offset butterfly valve according to claim 3, wherein: the abutting positions of the sealing ring (42) and the sealing strip (43) are smooth surfaces.

5. A novel triple offset butterfly valve according to claim 1, wherein: the sealing mechanism (4) further comprises a pressing plate (41), a pressing plate peak (411) is arranged on the surface of one side of the pressing plate (41), a pressing groove (421) is arranged on the surface of one side of the sealing ring (42), the pressing plate (41) is abutted to the sealing ring (42), and the surface of the pressing plate peak (411) is attached to the inner wall of the pressing groove (421); the butterfly plate (3) is provided with a fixing plate (32) and a connecting plate (31), the connecting plate (31) is sleeved on the circumferential position of the butterfly plate (3), and the connecting plate (31) is fixedly connected with the butterfly plate (3); the pressure plate (41) and the sealing ring (42) are fixedly connected between the fixing plate (32) and the connecting plate (31).

6. A novel triple offset butterfly valve according to claim 3, wherein: one side surface that valve body (1) was kept away from in circle strip (431) is provided with safety mechanism (5), safety mechanism (5) are including baffle (51), and baffle (51) fixed connection deviates from one side surface of valve body (1) in circle strip (431), and baffle (51) one side surface and sealing washer (42) surface butt towards valve rod (21).

7. A novel triple offset butterfly valve according to claim 6, wherein: the safety mechanism (5) is further provided with a plurality of contraction components (52), the contraction components (52) are uniformly distributed at the circumferential position of the circular strip (431), and one side surface, away from the baffle plate (51), of the circular seal (423) is abutted against the outer side of the contraction components (52).

8. A novel triple offset butterfly valve according to claim 7, wherein: the circumference position of circular strip (431) has seted up a plurality of shrink grooves (4311) along the radial of valve pocket (11), shrink part (52) are including shrink spring (521) and shrink piece (522), shrink spring (521) one end fixed connection in the bottom of shrink groove (4311), the other end fixed connection in the surface of shrink piece (522) of shrink spring (521), the other end of shrink piece (522) is located the outside of shrink groove (4311), the center of shrink piece (522) is located the inside of shrink groove (431).