CN217815029U

CN217815029U - Three-eccentric butterfly valve with high sealing performance

Info

Publication number: CN217815029U
Application number: CN202220212889.XU
Authority: CN
Inventors: 尤红东
Original assignee: Suzhou Bojin Self Control Valve Industry Co ltd
Current assignee: Suzhou Bojin Self Control Valve Industry Co ltd
Priority date: 2022-01-26
Filing date: 2022-01-26
Publication date: 2022-11-15
Anticipated expiration: 2032-01-26

Abstract

The utility model discloses a three eccentric butterfly valve that leakproofness is high relates to three eccentric butterfly valve technical field, for solving current three eccentric butterfly valve at the in-process leakproofness that uses to some extent, takes place the problem of valve pocket weeping easily when the valve is closed. Be provided with the sealed valve plate in the inside valve pocket of valve main part, the both ends of sealed valve plate all are provided with the outer edge of laminating, be provided with the valve rod on one side outer wall of sealed valve plate and cup joint the seat, be provided with the valve rod on the valve rod cup joints the seat, be provided with the valve rod positioning seat on the hookup location of valve rod and valve main part, the top of valve rod is provided with valve head mechanism, be provided with sealed joint ring on the inner wall of valve main part, be provided with the circular arc internal diameter on the inner wall of sealed joint ring, the circular arc internal diameter is connected along tangent contact with the laminating outward, the both ends of valve main part all are provided with flange, install seal ring in the outer wall inside groove of flange.

Description

Three-eccentric butterfly valve with high sealing performance

Technical Field

The utility model relates to a three eccentric butterfly valve technical field specifically is a three eccentric butterfly valve that leakproofness is high.

Background

The valve rod axis deviates from the center of the disc and the center of the body at the same time, and the valve seat rotation axis has a certain angle with the valve body channel axis, so that the valve rod is called a three-eccentric butterfly valve and a three-eccentric butterfly valve, and is widely used for industrial pipelines of metallurgy, electric power, petrochemical industry, water supply and drainage, municipal construction and the like with medium temperature of less than or equal to four hundred twenty five degrees centigrade, and is used for flow regulation and fluid carrying and breaking. The material is divided into: cast iron, cast steel, stainless steel, and triple offset butterfly valves are rotary valves, and the valve rod motion is only ninety degrees of rotation, and compared to valve rod motions such as gate valves and stop valves that are spiral multi-turn reciprocating motions, the packing parts are subject to much lower wear and have relatively long service lives.

The existing triple offset butterfly valve is lack of sealing performance in the using process, and leakage of a valve cavity is easy to occur when the valve is closed, so that the triple offset butterfly valve with high sealing performance is provided.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a three eccentric butterfly valve that leakproofness is high to solve the in-process leakproofness of the current three eccentric butterfly valve that proposes in the above-mentioned background art using and lack to some extent, take place the problem of valve pocket weeping easily when the valve is closed.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a three eccentric butterfly valves that leakproofness is high, includes the valve main part, be provided with the sealed valve plate in the inside valve pocket of valve main part, the both ends of sealed valve plate all are provided with the laminating outer edge, be provided with the valve rod on the outer wall of one side of sealed valve plate and cup joint the seat, be provided with the valve rod on the valve rod cup joint the seat, be provided with the valve rod positioning seat on the hookup location of valve rod and valve main part, the top of valve rod is provided with valve head mechanism, be provided with the sealing ring on the inner wall of valve main part, be provided with the circular arc internal diameter on the inner wall of sealing ring, the circular arc internal diameter is connected along tangent contact with the laminating outer, the both ends of valve main part all are provided with flange joint dish, install seal ring in flange joint dish's the outer wall inside groove.

Preferably, a transmission connecting shaft is arranged at the output end of the valve head mechanism, a coupling mechanism is arranged at the position where the transmission connecting shaft is connected with the valve rod, and the transmission connecting shaft is in transmission connection with the valve rod through the coupling mechanism.

Preferably, the inside of valve rod positioning seat is provided with connects the inner chamber, connects inner chamber and valve rod positioning seat integrated into one piece setting, the lower extreme of valve rod is provided with the bottom spiale at the bottom of the valve rod, and the bottom spiale of valve rod sets up with valve rod integrated into one piece.

Preferably, the inner wall of the connecting inner cavity is provided with a ceramic bearing, and the valve rod bottom connecting shaft is movably connected with the connecting inner cavity through the ceramic bearing.

Preferably, a sealing pressure ring is arranged above the ceramic bearing and fixedly connected with the connecting inner cavity through a screw.

Preferably, a sealing outer sleeve is arranged outside the valve rod and is integrally formed with the valve body.

Compared with the prior art, the beneficial effects of the utility model are that:

1. the utility model discloses when sealed valve plate was closed, the circular arc internal diameter was connected along tangent contact with the laminating outward, had improved sealed rigor degree, had alleviated the problem of taking place the weeping, the valve rod and the inside ceramic bearing swing joint of valve rod positioning seat, inner chamber is connected in the protection of sealed clamping ring valve rod positioning seat, has reduced the valve rod positioning seat and has taken place the possibility of intaking, has overcome current three eccentric butterfly valve and has lacked to some extent at the in-process leakproofness that uses, takes place the problem of valve pocket weeping easily when the valve is closed.

2. And a sealing washer is arranged in an inner groove in the outer wall of the flange connecting disc, and when the valve body is butted with a pipeline, the sealing washer can effectively improve the sealing degree of flange butt joint.

Drawings

Fig. 1 is a schematic view of the overall structure of a triple offset butterfly valve with high sealing performance;

fig. 2 is a schematic view of the internal structure of the valve main body of the present invention;

FIG. 3 is a schematic view of the connection structure of the valve rod and the valve rod positioning seat of the present invention;

in the figure: 1. a valve body; 2. a flange plate; 3. a sealing valve plate; 4. a sealing gasket; 5. a valve head mechanism; 6. a coupling mechanism; 7. a transmission connecting shaft; 8. sealing the outer sleeve; 9. sealing the connecting ring; 10. the inner diameter of the arc; 11. attaching the outer edge; 12. a valve rod sleeve joint seat; 13. a valve stem; 14. a valve rod positioning seat; 15. the bottom of the valve rod is connected with a shaft; 16. a ceramic bearing; 17. sealing the pressure ring; 18. is connected with the inner cavity.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.

Referring to fig. 1-3, the present invention provides an embodiment: the utility model provides a three eccentric butterfly valves that leakproofness is high, including valve main part 1, be provided with sealed valve plate 3 in the inside valve pocket of valve main part 1, the both ends of sealed valve plate 3 all are provided with laminating outer edge 11, be provided with valve rod cover joint seat 12 on the outer wall of one side of sealed valve plate 3, be provided with valve rod 13 on the valve rod cover joint seat 12, be provided with valve rod positioning seat 14 on the hookup location of valve rod 13 and valve main part 1, the top of valve rod 13 is provided with valve head mechanism 5, be provided with sealed connection ring 9 on the inner wall of valve main part 1, be provided with circular arc internal diameter 10 on the inner wall of sealed connection ring 9, circular arc internal diameter 10 is connected with laminating outer edge 11 tangent contact, the both ends of valve main part 1 all are provided with flange 2, install seal ring 4 in the inside groove of flange 2.

Further, be provided with transmission spiale 7 on the output of valve head mechanism 5, be provided with coupling mechanism 6 on the position that transmission spiale 7 and valve rod 13 are connected, transmission spiale 7 passes through coupling mechanism 6 and is connected with the transmission of valve rod 13, and transmission spiale 7 that sets up on the output of valve head mechanism 5 plays the pivoted effect of drive valve rod 13.

Further, the inside of valve rod positioning seat 14 is provided with connects inner chamber 18, connects inner chamber 18 and the setting of valve rod positioning seat 14 integrated into one piece, and the lower extreme of valve rod 13 is provided with valve rod end spiale 15, and spiale 15 and the setting of valve rod 13 integrated into one piece at the bottom of the valve rod, and the connection inner chamber 18 of the inside setting of valve rod positioning seat 14 plays the effect of bearing ceramic bearing 16.

Further, a ceramic bearing 16 is arranged on the inner wall of the connecting inner cavity 18, the valve rod bottom connecting shaft 15 is movably connected with the connecting inner cavity 18 through the ceramic bearing 16, and the ceramic bearing 16 arranged on the inner wall of the connecting inner cavity 18 plays a role in assisting the rotation of the valve rod 13.

Further, a sealing press ring 17 is arranged above the ceramic bearing 16, the sealing press ring 17 is fixedly connected with the connecting inner cavity 18 through screws, and the sealing press ring 17 arranged above the ceramic bearing 16 plays a role in sealing the ceramic bearing 16.

Further, a seal outer sleeve 8 is provided outside the valve rod 13, the seal outer sleeve 8 is provided integrally with the valve body 1, and the seal outer sleeve 8 provided outside the valve rod 13 plays a role of protecting the valve rod 13.

The working principle is as follows: when the sealing valve plate 3 is closed, the arc inner diameter 10 is in contact connection with the laminating outer edge 11 in a tangent mode, the sealing rigidness is improved, the problem of leakage is solved, the valve rod 13 is movably connected with the ceramic bearing 16 inside the valve rod positioning seat 14, the sealing pressing ring 17 is used for protecting the valve rod positioning seat 14 and connecting the inner cavity 18, the possibility of water inflow of the valve rod positioning seat 14 is reduced, the sealing washer 4 is installed in an inner groove in the outer wall of the flange connecting disc 2, when the valve body 1 is in butt joint with a pipeline, the sealing degree of the flange butt joint can be effectively improved through the sealing washer 4, and the use work of a three-eccentric butterfly valve with high sealing performance is completed.

It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Claims

1. The utility model provides a three eccentric butterfly valves that leakproofness is high, includes valve body (1), its characterized in that: be provided with sealed valve plate (3) in the inside valve pocket of valve main part (1), the both ends of sealed valve plate (3) all are provided with the laminating and follow (11) outward, be provided with valve rod socket (12) on the outer wall of one side of sealed valve plate (3), be provided with valve rod (13) on the valve rod socket (12), be provided with valve rod positioning seat (14) on the hookup location of valve rod (13) and valve main part (1), the top of valve rod (13) is provided with valve head mechanism (5), be provided with on the inner wall of valve main part (1) and seal joint ring (9), be provided with circular arc internal diameter (10) on the inner wall of seal joint ring (9), circular arc internal diameter (10) and laminating are connected along the tangent contact of (11) outward, the both ends of valve main part (1) all are provided with flange dish (2), install seal ring (4) in the outer wall inside groove of flange dish (2).

2. A triple offset butterfly valve with high sealability according to claim 1, wherein: the valve head mechanism is characterized in that a transmission connecting shaft (7) is arranged at the output end of the valve head mechanism (5), a coupling mechanism (6) is arranged at the position where the transmission connecting shaft (7) is connected with the valve rod (13), and the transmission connecting shaft (7) is in transmission connection with the valve rod (13) through the coupling mechanism (6).

3. A triple offset butterfly valve with high sealability according to claim 1, wherein: the valve rod positioning seat is characterized in that a connecting inner cavity (18) is formed in the valve rod positioning seat (14), the connecting inner cavity (18) and the valve rod positioning seat (14) are integrally formed, a valve rod bottom connecting shaft (15) is arranged at the lower end of the valve rod (13), and the valve rod bottom connecting shaft (15) and the valve rod (13) are integrally formed.

4. A triple offset butterfly valve with high sealability according to claim 3, wherein: the inner wall of the connecting inner cavity (18) is provided with a ceramic bearing (16), and the valve rod bottom connecting shaft (15) is movably connected with the connecting inner cavity (18) through the ceramic bearing (16).

5. The triple offset butterfly valve with high sealing performance according to claim 4, wherein: and a sealing press ring (17) is arranged above the ceramic bearing (16), and the sealing press ring (17) is fixedly connected with the connecting inner cavity (18) through a screw.

6. A triple offset butterfly valve with high sealability according to claim 1, wherein: and a sealing outer sleeve (8) is arranged outside the valve rod (13), and the sealing outer sleeve (8) and the valve main body (1) are integrally formed.