CN219673315U

CN219673315U - Double eccentric sealing butterfly valve

Info

Publication number: CN219673315U
Application number: CN202320320403.9U
Authority: CN
Inventors: 陈明; 陈锋; 宫佳琦; 池彩霞; 张东云
Original assignee: Shanghai Meride Valve Manufacturing Co ltd
Current assignee: Shanghai Meride Valve Manufacturing Co ltd
Priority date: 2023-02-27
Filing date: 2023-02-27
Publication date: 2023-09-12
Anticipated expiration: 2033-02-27

Abstract

The utility model belongs to the technical field of valves, and discloses a double-eccentric sealing butterfly valve which comprises a valve body, wherein the valve body is rotationally connected with the valve body, flange plates are symmetrically and fixedly connected with the two ends of the valve body, a sealing ring is arranged in the flange plates, and a rotating mechanism is arranged at the top end of the valve body; the flange plate is internally provided with a disassembly component, the disassembly component comprises a connecting rod, a rotating disc, a push rod, a compression spring and a moving plate, a thread groove is formed in one side of the flange plate, which is close to the center of the valve body, and the rotating disc is rotationally connected in the thread groove; the hand-held connecting rod drives the rotating disc to rotate, the rotating disc is enabled to move towards the inside of the flange, then the push rod is extruded, the push rod is driven to move synchronously, and the sealing ring is ejected out of the inside of the flange, so that a new sealing ring is replaced, a butterfly valve is not required to be knocked in the whole process, vibration influence on other precise parts is avoided in the replacing process, and the service life of equipment is prolonged.

Description

Double eccentric sealing butterfly valve

Technical Field

The utility model relates to the technical field of valves, in particular to a double-eccentric sealing butterfly valve.

Background

The double eccentric butterfly valve is also called as a high-performance butterfly valve, is mainly suitable for drainage of systems such as water works, power plants, steel works smelting, chemical industry, water source spring engineering, environmental facility construction and the like, is particularly suitable for water channel pipelines, and is used as adjusting and intercepting equipment.

Via search disclosure (bulletin) number: CN218267277U discloses a novel double eccentric seal butterfly valve, including valve body, ring flange, sealing washer and threaded rod, the outside of valve body is equipped with the ring flange, the inside of ring flange is inlayed the sealing washer, the back fixed connection threaded rod of sealing washer, the jack is seted up to the inside of ring flange, the threaded rod runs through the jack, the back of ring flange is equipped with the packing ring, the threaded rod is located the inside of packing ring, threaded connection nut is passed through to the outside of threaded rod. This novel double eccentric formula seal butterfly valve has the sealing washer through inlaying in the outside of ring flange, when needs change the sealing washer, only need unscrew the nut at the ring flange back, then use the instrument to strike the threaded rod, can strike out the sealing washer from the inside of ring flange, the new sealing washer of renewing afterwards can, it is very convenient when the maintenance is changed, overall structure is simple, the practicality is stronger, however in the in-process of in-service use, constantly strike the threaded rod, can produce certain vibrations, because frequent vibrations for a long time, the condition that deformation appears in the inside all the other accurate connecting pieces of butterfly valve can be caused, thereby lead to butterfly valve life to be short.

In order to solve the problems, the utility model provides a double eccentric sealing butterfly valve.

Disclosure of Invention

The double eccentric sealing butterfly valve provided by the utility model adopts the following technical scheme:

the double-eccentric sealing butterfly valve comprises a valve body, wherein a valve is rotationally connected in the valve body, flange plates are symmetrically and fixedly connected at two ends of the valve body, a sealing ring is arranged in the flange plates, and a rotating mechanism is arranged at the top end of the valve body;

the inside of ring flange is provided with the dismantlement subassembly, the dismantlement subassembly includes connecting rod, rolling disc, push rod, compression spring and movable plate, the ring flange is close to the inside screw thread groove of seting up in valve body center one side, the rolling disc rotates the inside of connecting at the screw thread groove, the ring flange is close to valve body center one side and has seted up the arc wall, connecting rod sliding connection is in the inside of arc wall.

Further, one end of the connecting rod far away from the center of the valve body is fixedly connected with one side of the rotating disc close to the center of the valve body, a notch is formed in the flange, and a plurality of push rods are connected in the notch in a sliding penetrating mode.

Through above-mentioned technical scheme, handheld connecting rod rotates, can drive the rotation dish to the inside shrink rotation of ring flange.

Further, one side of the push rod close to the center of the valve body is in sliding connection with one side of the rotating disc away from the center of the valve body, and the other end of the push rod is arranged on one side of the sealing ring.

Through above-mentioned technical scheme, the rolling disc can give a thrust to the push rod at the in-process that removes, then release the ring flange with the sealing washer through the push rod to realize the dismantlement of sealing washer.

Further, the movable plate is slidably connected to the inside of the flange, one end of the push rod, which is close to the rotating disc, is fixedly sleeved in the movable plate, and the compression spring is sleeved outside the push rod.

Through the technical scheme, the push rod can drive the movable plate to move in the same direction in the flange plate in the moving process.

Further, one end of the compression spring, which is close to the rotating disc, is fixedly connected with one side, which is far away from the rotating disc, of the movable plate, and the other side of the compression spring is fixedly connected with one side of the notch.

Through the technical scheme, after the thrust of the rotating disc to the push rod is reduced, the push rod can be driven to reversely move through the moving plate under the action of the compression spring.

Further, the rotating mechanism comprises a shaft seat, a shaft rod, a rotating ring and a fixed block, wherein the shaft seat is fixedly arranged at the top end of the valve body, the bottom end of the shaft rod is rotationally connected to the inside of the shaft seat, the top end of the shaft rod is fixedly sleeved in the rotating ring, and the top end of the rotating ring is fixedly arranged at the bottom end of the fixed block.

Through the technical scheme, the rotary rotating ring drives the valve inside the valve body to rotate to open or close through the rotating disc.

Further, a plurality of screw holes have been seted up to the inside symmetry of ring flange, the inside rotation of screw hole is connected with the threaded rod, the one end cover of threaded rod is equipped with the gasket, one side that the valve body was kept away from to the gasket is provided with the nut, the one end at the threaded rod is established to the nut cover.

Through above-mentioned technical scheme, inlay in the outside of ring flange has the sealing washer to adopt the threaded rod to consolidate at the back of sealing washer, just so can utilize the sealing washer to reach excellent sealed effect in the in-process of using.

In summary, the utility model has the following beneficial technical effects:

according to the utility model, the disassembly component is arranged in the flange, when the sealing ring is replaced, the handheld connecting rod drives the rotating disc to rotate, the rotating disc moves towards the inside of the flange, then the push rod is extruded, the push rod is driven to synchronously move, the sealing ring is ejected out of the inside of the flange, so that a new sealing ring is replaced, a butterfly valve is not required to be knocked in the whole process, vibration influence on other precise parts is not required in the replacement process, and the service life of equipment is prolonged.

Drawings

FIG. 1 is a schematic diagram of the overall structure of the present utility model;

FIG. 2 is a first cross-sectional schematic view of the present utility model;

FIG. 3 is a second cross-sectional schematic view of the present utility model;

fig. 4 is an enlarged schematic view of the structure of fig. 3 a according to the present utility model.

The reference numerals in the figures illustrate:

1. a valve body; 2. a valve; 3. a shaft seat; 4. a shaft lever; 5. a rotating ring; 6. a fixed block; 7. a flange plate; 8. a seal ring; 9. a gasket; 10. a nut; 11. a threaded rod; 12. a connecting rod; 13. a rotating disc; 14. a push rod; 15. a compression spring; 16. and (3) moving the plate.

Detailed Description

The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model; it is apparent that the described embodiments are only some embodiments of the present utility model, not all embodiments, and that all other embodiments obtained by persons of ordinary skill in the art without making creative efforts based on the embodiments in the present utility model are within the protection scope of the present utility model.

In the description of the present utility model, it should be noted that the positional or positional relationship indicated by the terms such as "upper", "lower", "inner", "outer", "top/bottom", etc. are based on the positional or positional relationship shown in the drawings, are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "configured to," "engaged with," "connected to," and the like are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

Examples:

the embodiment of the utility model discloses a double eccentric sealing butterfly valve, referring to fig. 1, 2, 3 and 4, comprising a valve body 1, wherein the valve body 1 is internally and rotatably connected with a valve 2, two ends of the valve body 1 are symmetrically and fixedly connected with flange plates 7, a sealing ring 8 is arranged in the flange plates 7, and the top end of the valve body 1 is provided with a rotating mechanism;

the inside of ring flange 7 is provided with the dismantlement subassembly, and the dismantlement subassembly includes connecting rod 12, rolling disc 13, push rod 14, compression spring 15 and movable plate 16, and the screw thread groove has been seted up to inside ring flange 7 in being close to valve body 1 center one side, and rolling disc 13 rotates the inside of connecting at the screw thread groove, and the arc wall has been seted up to ring flange 7 in being close to valve body 1 center one side, and connecting rod 12 sliding connection is in the inside of arc wall.

Referring to fig. 3 and 4, one end of the connecting rod 12 far away from the center of the valve body 1 is fixedly connected with one side of the rotating disc 13 near the center of the valve body 1, a notch is formed in the flange 7, a plurality of push rods 14 are connected in a sliding and penetrating manner in the notch, and a plurality of groups of push rods 14 are arranged in the notch and uniformly and symmetrically distributed in the flange 7.

The outer wall of the rotating disc 13 is provided with a thread line matched with the thread groove, and the hand-held connecting rod 12 rotates to drive the rotating disc 13 to shrink and rotate towards the inside of the flange 7.

Referring to fig. 3 and 4, a push rod 14 is slidably connected to a side of the rotating disc 13 away from the center of the valve body 1, and the other end of the push rod 14 is disposed on one side of the sealing ring 8.

The rotating disc 13 can give a pushing force to the push rod 14 in the moving process, and then the sealing ring 8 is pushed out of the flange 7 through the push rod 14, so that the sealing ring 8 is dismounted.

Referring to fig. 3 and 4, the moving plate 16 is slidably connected to the inside of the flange 7, one end of the push rod 14 near the rotating disc 13 is fixedly sleeved in the moving plate 16, and the compression spring 15 is sleeved outside the push rod 14.

The push rod 14 can drive the moving plate 16 to move in the same direction in the flange 7 during the moving process.

Referring to fig. 3 and 4, one end of the compression spring 15 close to the rotating disc 13 is fixedly connected with one side of the moving plate 16 far away from the rotating disc 13, and the other side of the compression spring 15 is fixedly connected with one side of the notch.

When the thrust of the rotating disc 13 to the push rod 14 is reduced, the push rod 14 can be driven to move reversely by the moving plate 16 under the action of the compression spring 15.

Referring to fig. 1, the rotating mechanism includes a shaft seat 3, a shaft rod 4, a rotating ring 5 and a fixed block 6, the shaft seat 3 is fixedly installed at the top end of the valve body 1, the bottom end of the shaft rod 4 is rotationally connected in the shaft seat 3, the top end of the shaft rod 4 is fixedly sleeved in the rotating ring 5, the top end of the rotating ring 5 is fixedly installed at the bottom end of the fixed block 6, and the rotating ring 5 drives the valve 2 in the valve body 1 to rotate to open or close through a rotating disc 13.

Referring to fig. 1, a plurality of threaded holes are symmetrically formed in the flange 7, a threaded rod 11 is rotatably connected in the threaded holes, a gasket 9 is sleeved at one end of the threaded rod 11, a nut 10 is arranged at one side, away from the valve body 1, of the gasket 9, and the nut 10 is sleeved at one end of the threaded rod 11.

The sealing ring 8 is embedded outside the flange plate 7, and the back of the sealing ring 8 is reinforced by a threaded rod 11, so that the sealing ring 8 can be utilized to achieve an excellent sealing effect in the application process.

The implementation principle of the embodiment is as follows: the connecting rod 12 is held by hand to promote to drive the rolling disc 13 to rotate, because the outer wall of rolling disc 13 has seted up the screw thread with screw thread groove looks adaptation, consequently rolling disc 13 can shrink the removal to the inside of ring flange 7 at pivoted in-process, then gives push rod 14 a thrust, drives push rod 14 syntropy and removes, and push rod 14 can be ejecting sealing washer 8 from the inside of ring flange 7 at the in-process of removal, thereby realizes the change of sealing washer 8.

The above embodiments are not intended to limit the scope of the present utility model, so: all equivalent changes in structure, shape and principle of the utility model should be covered in the scope of protection of the utility model.

Claims

1. The utility model provides a double eccentric seal butterfly valve, includes valve body (1), its characterized in that: the inside of the valve body (1) is rotationally connected with a valve (2), two ends of the valve body (1) are symmetrically and fixedly connected with flange plates (7), a sealing ring (8) is arranged in the flange plates (7), and a rotating mechanism is arranged at the top end of the valve body (1);

the inside of ring flange (7) is provided with the dismantlement subassembly, the dismantlement subassembly includes connecting rod (12), rolling disc (13), push rod (14), compression spring (15) and movable plate (16), the screw thread groove has been seted up to inside ring flange (7) being close to valve body (1) center one side, rolling disc (13) rotate and connect the inside at the screw thread groove, the arc wall has been seted up to ring flange (7) being close to valve body (1) center one side, connecting rod (12) sliding connection is in the inside of arc wall.

2. The double eccentric seal butterfly valve of claim 1, wherein: one end of the connecting rod (12) far away from the center of the valve body (1) is fixedly connected with one side of the rotating disc (13) close to the center of the valve body (1), a notch is formed in the flange (7), and a plurality of push rods (14) are connected in the notch in a sliding and penetrating mode.

3. The double eccentric seal butterfly valve of claim 1, wherein: one side of the push rod (14) close to the center of the valve body (1) is in sliding connection with one side of the rotating disc (13) far away from the center of the valve body (1), and the other end of the push rod (14) is arranged on one side of the sealing ring (8).

4. The double eccentric seal butterfly valve of claim 1, wherein: the movable plate (16) is slidably connected to the inside of the flange plate (7), one end of the push rod (14) close to the rotating disc (13) is fixedly sleeved in the movable plate (16), and the compression spring (15) is sleeved outside the push rod (14).

5. The double eccentric seal butterfly valve of claim 1, wherein: one end of the compression spring (15) close to the rotating disc (13) is fixedly connected with one side of the moving plate (16) far away from the rotating disc (13), and the other side of the compression spring (15) is fixedly connected with the inside of one side of the notch.

6. The double eccentric seal butterfly valve of claim 1, wherein: the rotary mechanism comprises a shaft seat (3), a shaft rod (4), a rotary ring (5) and a fixed block (6), wherein the shaft seat (3) is fixedly arranged at the top end of the valve body (1), the bottom end of the shaft rod (4) is rotationally connected with the inside of the shaft seat (3), the top end of the shaft rod (4) is fixedly sleeved in the rotary ring (5), and the top end of the rotary ring (5) is fixedly arranged at the bottom end of the fixed block (6).

7. The double eccentric seal butterfly valve of claim 1, wherein: the inside symmetry of ring flange (7) has seted up a plurality of screw holes, the inside rotation of screw hole is connected with threaded rod (11), the one end cover of threaded rod (11) is equipped with gasket (9), one side that valve body (1) was kept away from to gasket (9) is provided with nut (10), the one end at threaded rod (11) is established to nut (10) cover.