CN218818233U

CN218818233U - Double-sealing triple-eccentric hard sealing butterfly valve

Info

Publication number: CN218818233U
Application number: CN202223083257.7U
Authority: CN
Inventors: 蔡志伟; 陈助泉
Original assignee: Jilin Province Yuanyuan Intelligent Equipment Manufacturing Co ltd
Current assignee: Jilin Province Yuanyuan Intelligent Equipment Manufacturing Co ltd
Priority date: 2022-11-21
Filing date: 2022-11-21
Publication date: 2023-04-07
Anticipated expiration: 2032-11-21

Abstract

The utility model belongs to the technical field of three eccentric hard seal butterfly valves technique and specifically relates to a double seal's three eccentric hard seal butterfly valves, including three eccentric hard seal butterfly valve main parts and three eccentric hard seal butterfly valve gap, the top of three eccentric hard seal butterfly valve main parts links to each other with three eccentric hard seal butterfly valve gap is fixed, the both sides of three eccentric hard seal butterfly valve main parts rotate with the valve rod and link to each other. Pass through the sleeve through the valve rod and drive the sealing ring and rotate, the sealing ring rotates the in-process, the sealing ring receives the elasticity influence of first spring and makes sealing ring and ring closely laminate, thereby realize the sealing between sealing ring and the ring, first spring passes through the sealing ring simultaneously and extrudees the ring, the leakproofness of three eccentric hard seal butterfly valves has been improved, prevent that the condition of revealing from appearing easily when carrying the more medium of dust or having corrosive water vapour medium in three eccentric hard seal butterfly valves, the life of three eccentric hard seal butterfly valves has been improved.

Description

Double-sealing triple-eccentric hard sealing butterfly valve

Technical Field

The utility model relates to a three eccentric butterfly valve technical field that seals firmly especially relates to a double seal's three eccentric butterfly valves that seal firmly.

Background

The three-eccentric hard seal butterfly valve is an eccentric metal seal structure, the seal form is metal-to-metal seal, the replaceable metal seal ring is sealed to the metal, and the drive form of the stainless steel plate and the graphite composite plate seal ring to the metal seal hard seal butterfly valve is electric, besides: manual, worm-gear drive, pneumatic, etc.

For example, the granted publication No. CN215214793U avoids the sealing effect of the valve from being affected by high temperature, but in the assembly process of the triple eccentric hard seal butterfly valve in the above document, usually, the connection between the valve rod and the valve body is realized through the seal bearing between the valve body of the triple eccentric hard seal butterfly valve and the valve rod of the triple eccentric hard seal butterfly valve, however, because the seal bearing has an enlarged seal gap, the triple eccentric hard seal butterfly valve is likely to leak from the seal gap between the seal bearings when a medium with much dust in the internal transportation environment or a corrosive water vapor medium is transported in the use process of the triple eccentric hard seal butterfly valve, and the triple eccentric hard seal butterfly valve is likely to be damaged over time.

Disclosure of Invention

The utility model aims at solving the problem that the sealing clearance between the sealed bearing is revealed easily when carrying the more medium of dust or having corrosive vapor medium of prior art, and the triple offset hard seal butterfly valve of a double seal that provides.

The utility model provides a technical scheme that its technical problem adopted: the double-sealing triple eccentric hard sealing butterfly valve.

In order to further perfect, a double-sealing triple-eccentric hard sealing butterfly valve comprises a triple-eccentric hard sealing butterfly valve main body and a triple-eccentric hard sealing butterfly valve cover, wherein the top end of the triple-eccentric hard sealing butterfly valve main body is fixedly connected with the triple-eccentric hard sealing butterfly valve cover, the two sides of the triple-eccentric hard sealing butterfly valve main body are rotationally connected with a valve rod, the top end of the valve rod is rotationally connected with the triple-eccentric hard sealing butterfly valve cover, the top of the valve rod is rotationally connected with a rotary rod through a transmission assembly, the outer wall of the rotary rod is rotationally connected with the triple-eccentric hard sealing butterfly valve cover, and double sealing structures are arranged on the two sides of the valve rod.

Further perfect, double seal structure includes the sleeve, telescopic inboard is connected with the valve rod through the bolt, telescopic inner wall inner links to each other with the one end stationary phase of a plurality of first springs, the other end of first spring all with support tight board fixed linking to each other, support the outer end and the second rubber sleeve of tight board and closely laminate, the outer wall and the sealing ring that support tight board cup joint mutually, the outside and the sealing ring of second rubber sleeve closely laminate, the outer wall and the telescopic keyway looks joint of sealing ring, the top and the ring of sealing ring closely laminate, the outer wall middle part and the first rubber sleeve of ring closely laminate, the top and the three eccentric hard seal butterfly valve main parts of first rubber sleeve closely laminate, the outer wall top and the keyway looks joint of three eccentric hard seal butterfly valve main parts of ring.

Further perfect, the inner wall and the valve rod of sealing ring cup joint mutually, the inner wall and the valve rod of ring cup joint mutually.

Further perfection, the transmission assembly is formed by mutually meshing two bevel gears, wherein the number of teeth and the size of the two bevel gears are the same.

Further perfection, the right end of the rotating rod is fixedly connected with the hand wheel.

Further perfection, the bottom of valve rod and valve plate are fixed continuous.

The utility model discloses profitable effect is: the utility model discloses, it rotates to pass through the sleeve through the valve rod and drive the sealing ring, the sealing ring rotates the in-process, the sealing ring receives the elasticity influence of first spring to make sealing ring and ring closely laminate, thereby realize the sealing between sealing ring and the ring, first spring passes through the sealing ring simultaneously and extrudees the ring, make the first rubber sleeve of ring extrusion and the closely laminate of three eccentric hard seal butterfly valve main parts, the top seal of three eccentric hard seal butterfly valve main parts, the elasticity of first spring is through supporting tight plate extrusion second rubber sleeve and the closely laminating of sealing ring, form double seal between valve rod and the three eccentric hard seal butterfly valve main parts has been realized, original mode of connecting through sealed bearing has been replaced, the leakproofness of three eccentric hard seal butterfly valves has been improved, prevent that the condition of revealing from appearing easily when carrying the more medium of dust or having corrosive nature vapor medium of three eccentric hard seal butterfly valves, the life of three eccentric hard seal butterfly valves has been improved.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic front view of the structure of FIG. 1;

FIG. 3 is a schematic view of the structure A in FIG. 2;

fig. 4 is a schematic structural diagram of B in fig. 2.

Description of reference numerals: 1. three eccentric butterfly valve body that seal firmly, 2, three eccentric butterfly valve covers that seal firmly, 3, hand wheel, 4, double seal structure, 4a1, sleeve, 4a2, ring, 4a3, first rubber sleeve, 4a4, support tight board, 4a5, first spring, 4a6, second rubber sleeve, 4a7, sealing ring, 4b1, the rubber pad, 4b2, the second spring, 4b3, the bracing piece, 5, the swing arm, 6, the valve plate, 7, drive assembly, 8, the valve rod.

Detailed Description

The present invention will be further explained with reference to the accompanying drawings:

example 1:

referring to figures 1-4: in this embodiment, a double seal's triple offset butterfly valve sealed firmly, including triple offset butterfly valve sealed firmly main part 1 and triple offset butterfly valve gap 2 sealed firmly, triple offset butterfly valve sealed firmly main part 1's top and triple offset butterfly valve sealed firmly 2 fixed links to each other, triple offset butterfly valve sealed firmly main part 1's both sides rotate with valve rod 8 and link to each other, valve rod 8's top and triple offset butterfly valve sealed firmly valve gap 2 rotate and link to each other, valve rod 8's top is passed through drive assembly 7 and is rotated with swing arm 5 and link to each other, swing arm 5's outer wall rotates with triple offset butterfly valve gap 2 and links to each other, valve rod 8's both sides are equipped with double seal structure 4.

The double-sealing structure 4 comprises a sleeve 4a1, the inner side of the sleeve 4a1 is connected with a valve rod 8 through a bolt, the inner end of the inner wall of the sleeve 4a1 is fixedly connected with one end of a plurality of first springs 4a5, the elastic coefficient of the first springs 4a5 can be selected according to the actual use condition, the sealing ring 4a7 is made of fluororubber material, the fluororubber has non-adhesiveness and self-lubricity and low friction coefficient, the end surface roughness processing of the sealing ring 4a7 is not more than Ra0.4, the other end of the first spring 4a5 is fixedly connected with a resisting plate 4a4, the outer end of the resisting plate 4a4 is tightly attached to a second rubber sleeve 4a6, the outer wall of the resisting plate 4a4 is sleeved with the sealing ring 4a7, the outer side of the second rubber sleeve 4a6 is tightly attached to the sealing ring 4a7, the outer wall of the sealing ring 4a7 is clamped with a key groove of the sleeve 4a1, the top end of the sealing ring 4a7 is tightly attached to a2, the valve rod 8 rotates the sleeve 4a1, and the sealing ring 4a1 drives the sealing ring 4a7 to rotate, in the rotation process of the sealing ring 4a7, the sealing ring 4a7 is affected by the elastic force of the first spring 4a5 to enable the sealing ring 4a7 to be tightly attached to the circular ring 4a2, and the circular ring 4a2 is affected by the key groove of the three-eccentric hard seal butterfly valve main body 1 to not rotate along with the sealing ring 4a7, so that sealing between the sealing ring 4a7 and the circular ring is achieved, meanwhile, the first spring 4a5 extrudes the circular ring 4a2 through the sealing ring 4a7 to enable the circular ring 4a2 to extrude the first rubber sleeve 4a3 to be tightly attached to the three-eccentric hard seal butterfly valve main body 1, the top of the three-eccentric hard seal butterfly valve main body 1 is sealed, the elastic force of the first spring 4a5 extrudes the second rubber sleeve 4a6 to be tightly attached to the sealing ring 4a7 through the abutting plate 4a4, sealing between the valve rod 8 and the sleeve 4a1 is achieved, double sealing between the valve rod 8 and the three-eccentric hard seal butterfly valve main body 1 is achieved, the end surface roughness of the circular ring 4a2 is not greater than Ra0.2, the middle part of the outer wall of the circular ring 4a2 is tightly attached to the first rubber sleeve 4a3, as shown in fig. 4, the first spring 4a5 is in a compressed state, meanwhile, the end face of the sealing ring 4a7 is coated with lubricating oil in the installation process, the top end of the first rubber sleeve 4a3 is tightly attached to the three-eccentric hard-seal butterfly valve main body 1, the top of the outer wall of the circular ring 4a2 is in clamping connection with the key slot of the three-eccentric hard-seal butterfly valve main body 1, the inner wall of the sealing ring 4a7 is in sleeve connection with the valve rod 8, the inner wall of the circular ring 4a2 is in sleeve connection with the valve rod 8, the transmission assembly 7 is formed by mutually meshing two bevel gears, wherein the tooth number and the size of the two bevel gears are the same, the right end of the rotary rod 5 is fixedly connected with the hand wheel 3, and the bottom of the valve rod 8 is fixedly connected with the valve plate 6;

drive sealing ring 4a7 through sleeve 4a1 through valve rod 8 and rotate, sealing ring 4a7 rotates the in-process, sealing ring 4a7 receives the elasticity influence of first spring 4a5 to make sealing ring 4a7 and ring 4a2 closely laminate, thereby realize the sealed between sealing ring 4a7 and the ring, first spring 4a5 extrudees ring 4a2 through sealing ring 4a7 simultaneously, make ring 4a2 extrude first rubber sleeve 4a3 and closely laminate with three eccentric hard seal butterfly valve main part 1, the top of three eccentric hard seal butterfly valve main part 1 is sealed, the elasticity of first spring 4a5 is through pressing tight board 4a4 extrusion second rubber sleeve 4a6 and the closely laminate with sealing ring 4a7, it forms double seal to have realized between valve rod 8 and the three eccentric hard seal butterfly valve main part 1, the original mode of connecting through sealed bearing has been replaced, the leakproofness of three eccentric hard seal butterfly valve has been improved, prevent that three eccentric hard seal from appearing the condition of corrosivity hard seal when carrying the medium of dust or having more aqueous vapor medium, the life of three eccentric hard seal has been improved.

The working principle is as follows:

when the double-seal three-eccentric hard seal butterfly valve is used, a user uses the hand wheel 3, the hand wheel 3 drives the rotating rod 5 to rotate, the rotating rod 5 drives the valve rod 8 to rotate through the transmission component 7, the valve rod 8 drives the valve plate 6 to rotate, so that the double-seal three-eccentric hard seal butterfly valve is opened and closed, when the valve rod 8 rotates, the valve rod 8 rotates the sleeve 4a1, the sleeve 4a1 drives the seal ring 4a7 to rotate, in the rotating process of the seal ring 4a7, the seal ring 4a7 is influenced by the elastic force of the first spring 4a5, so that the seal ring 4a7 is tightly attached to the ring 4a2, the ring 4a2 is not influenced by the key groove of the three-eccentric hard seal butterfly valve body 1 to rotate along with the seal ring 4a7, so that the seal between the seal ring 4a7 and the ring is realized, meanwhile, the first spring 4a5 extrudes the ring 4a2 through the seal ring 4a7, make 4a2 extrusion first rubber sleeve 4a3 of ring and three eccentric hard seal butterfly valve main part 1 closely laminate, three eccentric hard seal butterfly valve main part 1's top seal, first spring 4a 5's elasticity is closely laminated with sealing ring 4a7 through supporting 4a4 extrusion second rubber sleeve 4a6 of tight board, realize sealing between valve rod 8 and the sleeve 4a1, it forms double seal to have realized between valve rod 8 and the three eccentric hard seal butterfly valve main part 1, original mode of carrying out through sealed bearing has been replaced, the leakproofness of three eccentric hard seal butterfly valves has been improved, prevent that the condition of revealing from appearing easily when the more medium of three eccentric hard seal butterfly valves of transport dust or have corrosive water vapour medium, the life of three eccentric hard seal butterfly valves has been improved.

Example 2:

referring to FIG. 3: in this embodiment, a double-seal three-eccentric hard seal butterfly valve, wherein double-seal structure 4 may further include a rubber pad 4b1, a second spring 4b2 and a support rod 4b3, the inner end of second spring 4b2 is fixedly connected with the groove of three-eccentric hard seal butterfly valve main body 1, the other ends of a plurality of second springs 4b2 are fixedly connected with a plurality of support rods 4b3, the outer end of support rod 4b3 is fixedly connected with rubber pad 4b1, the elastic coefficient of second spring 4b2 can be selected according to actual use conditions, when the two sides of three-eccentric hard seal butterfly valve main body 1 are connected with an external pipeline, the external pipeline extrudes rubber pad 4b1, rubber pad 4b1 drives support rod 4b3 to move along the groove of three-eccentric hard seal butterfly valve main body 1, and drives support rod 4b2 to compress, and rubber pad 4b1 is always influenced by the elastic force of second spring 4b2, so that rubber pad 4b1 is always tightly attached to external pipeline and three-eccentric hard seal butterfly valve main body 1, thereby improving the sealing performance between the external pipeline.

While the invention has been shown and described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and detail may be made therein without departing from the scope of the appended claims.

Claims

1. The utility model provides a double seal's triple offset butterfly valve sealed firmly, includes triple offset butterfly valve sealed firmly main part (1) and triple offset butterfly valve gap (2) sealed firmly, the top of triple offset butterfly valve sealed firmly main part (1) is fixed continuous its characterized in that with triple offset butterfly valve gap (2) sealed firmly: the both sides of three eccentric hard seal butterfly valve main parts (1) rotate with valve rod (8) and link to each other, the top and three eccentric hard seal butterfly valve gap (2) of valve rod (8) rotate and link to each other, the top of valve rod (8) is passed through drive assembly (7) and is rotated with swing arm (5) and link to each other, the outer wall and the three eccentric hard seal butterfly valve gap (2) of swing arm (5) rotate and link to each other, the both sides of valve rod (8) are equipped with double seal structure (4).

2. The double-sealed triple-offset hard-seal butterfly valve of claim 1, wherein: double seal structure (4) are including sleeve (4 a 1), the inboard of sleeve (4 a 1) is connected with valve rod (8) through the bolt, the inner end of the inner wall of sleeve (4 a 1) links to each other with the one end stationary phase of a plurality of first springs (4 a 5), the other end of first spring (4 a 5) all with support tight board (4 a 4) fixed linking to each other, support the outer end and the inseparable laminating of second rubber sleeve (4 a 4) of tight board (4 a 4), support the outer wall and the sealing ring (4 a 7) of tight board (4 a 4) and cup joint mutually, the outside and the inseparable laminating of sealing ring (4 a 7) of second rubber sleeve (4 a 6), the outer wall of sealing ring (4 a 7) and the looks joint of sleeve (4 a 1), the top and the inseparable laminating of ring (4 a 2) of ring (4 a 7), the outer wall middle part and the inseparable laminating of first rubber sleeve (4 a 3), the sealed top of butterfly valve (4 a) and the butterfly valve (4 a) of the sealed main part (1) of three eccentrics) and the sealed keyway (4 a 2).

3. A double-sealed triple offset hard seal butterfly valve according to claim 2, wherein: the inner wall of the sealing ring (4 a 7) is sleeved with the valve rod (8), and the inner wall of the circular ring (4 a 2) is sleeved with the valve rod (8).

4. A double-sealed triple-eccentric hard-sealed butterfly valve according to claim 1, wherein: the transmission component (7) is formed by mutually meshing two bevel gears, wherein the number of teeth and the size of the two bevel gears are the same.

5. The double-sealed triple-offset hard-seal butterfly valve of claim 1, wherein: the right end of the rotating rod (5) is fixedly connected with the hand wheel (3).

6. The double-sealed triple-offset hard-seal butterfly valve of claim 1, wherein: the bottom of the valve rod (8) is fixedly connected with the valve plate (6).