CN214197290U

CN214197290U - Double-eccentric hard sealing flange butterfly valve

Info

Publication number: CN214197290U
Application number: CN202022288814.3U
Authority: CN
Inventors: 刘忠立
Original assignee: Tianjin Yingkai Valve Co ltd
Current assignee: Tianjin Yingkai Valve Co ltd
Priority date: 2020-10-15
Filing date: 2020-10-15
Publication date: 2021-09-14
Anticipated expiration: 2030-10-15

Abstract

The utility model discloses a hard sealed flange butterfly valve of two eccentrics, including transmission, transmission one side swing joint has the axis of rotation, axis of rotation one side fixedly connected with handwheel dish, the sealed lid of transmission top fixedly connected with, transmission bottom fixedly connected with back up coat, back up coat bottom both sides fixedly connected with fastening bolt, back up coat bottom fixedly connected with universal driving shaft, universal driving shaft outside fixedly connected with ring flange, ring flange bottom fixedly connected with clamp plate, universal driving shaft bottom fixedly connected with valve body, be provided with the locating hole in the valve body edge, the fixed sealing washer that is provided with of valve body junction. This kind of two eccentric hard seal flange butterfly valves reduces the inside possibility of entering transmission such as moisture, also reduces the impact force of rivers to the valve plate, can disperse the condition of stress concentration in the course of the work, and then can effectively avoid the valve plate to produce the condition of deflecting or structural deformation because of tired or surpass withstand voltage limit.

Description

Double-eccentric hard sealing flange butterfly valve

Technical Field

The utility model relates to a butterfly valve technical field specifically is a two eccentric hard seal flange butterfly valves.

Background

A butterfly valve, also called a flap valve, is a regulating valve with simple structure, and can be used for the on-off control of low-pressure pipeline media, namely a valve which is opened and closed by rotating around a valve shaft, wherein a closing member (a valve clack or a butterfly plate) is a disk.

The valve can be used for controlling the flow of various types of fluids such as air, water, steam, various corrosive media, slurry, oil products, liquid metal, radioactive media and the like. The pipe mainly plays a role in cutting off and throttling. The butterfly valve is characterized by simple structure, small volume, light weight, material consumption saving, small installation size, rapid switching, 90-degree reciprocating rotation, small driving moment and the like, is used for cutting off, connecting and adjusting media in pipelines, and has good fluid control property and closing sealing property; the butterfly valve can convey slurry, and liquid accumulation at the opening of the pipeline is minimum. At low pressures, good sealing can be achieved. The adjusting performance is good; the streamlined design of the butterfly plate ensures that the fluid resistance loss is small, so that the butterfly plate is an energy-saving product; the valve rod is of a through rod structure, and has good comprehensive mechanical property, corrosion resistance and scratch resistance after thermal refining. When the butterfly valve is opened and closed, the valve rod only rotates but does not lift, the packing of the valve rod is not easy to damage, and the sealing is reliable. The butterfly valve is fixed with the butterfly plate taper pin, and the outward extending end is in anti-ejection design so as to prevent the valve rod from being broken out when the joint of the valve rod and the butterfly plate is accidentally broken; the connection modes comprise flange connection, butt clamp connection, butt welding connection and lug butt clamp connection; the driving form is manual, worm gear transmission, electric, pneumatic, hydraulic, electrohydraulic linkage and other executing mechanisms, and long-distance control and automatic operation can be realized.

At present, only two sides of a sealing pair of a butterfly valve are made of metal materials or hard other materials and are called hard sealing, the existing hard sealing bidirectional sealing butterfly valve has the problems of poor sealing effect, serious valve body loss and the like, the problem that a sealing surface is scratched and the like after long-time use can be caused, the requirements of life and application of people at present can not be met, and therefore the butterfly valve is improved and the double-eccentric hard sealing flange butterfly valve is provided.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problem, the utility model provides a following technical scheme:

the utility model relates to a double eccentric hard sealing flange butterfly valve, which comprises a transmission device, one side of the transmission device is movably connected with a rotating shaft, one side of the rotating shaft is fixedly connected with a handwheel plate, the top of the transmission device is fixedly connected with a sealing cover, the bottom of the transmission device is fixedly connected with a reinforcing layer, two sides of the bottom of the reinforcing layer are fixedly connected with fastening bolts, the bottom of the reinforcing layer is fixedly connected with a universal driving shaft, the outer side of the universal driving shaft is fixedly connected with a flange plate, the bottom of the flange plate is fixedly connected with a pressing plate, the bottom of the universal driving shaft is fixedly connected with a valve body, a positioning hole is arranged in the edge of the valve body, a sealing ring is fixedly arranged at the joint of the valve body, the top of the inner side of the valve body is fixedly connected with an upper shaft sleeve, the bottom of the upper shaft sleeve is fixedly connected with a main shaft, the top of the main shaft is fixedly connected with the inside of the universal driving shaft, the improved valve plate is characterized in that the bottom of the main shaft is arranged in the valve plate, a first fixing pin and a second fixing pin are fixedly connected to the inside of the bottom of the main shaft, the first fixing pin and the second fixing pin penetrate through the valve plate respectively to fixedly connect the main shaft to the inside of the valve plate, a lower shaft sleeve is fixedly connected to the bottom of the valve plate, an auxiliary shaft is fixedly connected to the inside of the lower shaft sleeve, a bearing is movably connected to the outer side of the bottom of the auxiliary shaft, and a tail tray is fixedly connected to the bottom of the bearing.

As an optimized technical scheme of the utility model, valve plate one side sets up to the arc and encircles the bridge floor, the arc encircles and is provided with three logical groove between bridge floor and the valve plate

As an optimized technical scheme of the utility model, valve plate outside fixedly connected with valve plate sealing washer.

As a preferred technical scheme of the utility model, the valve plate sealing washer material is stainless steel.

As a preferred technical scheme of the utility model, two connecting plates of valve plate one side fixedly connected with, be provided with the buffer block of fixed connection valve plate between two connecting plates.

As a preferred technical scheme of the utility model, the valve body bottom is provided with the tail top cap, tail top cap bottom fixedly connected with screw, the screw is with tail top cap fixed connection in the bottom of valve body.

The utility model has the advantages that:

the utility model provides a, this kind of two eccentric hard seal flange butterfly valves, is provided with sealed lid and back up coat, through the installation of sealed lid and back up coat, has reduced the universal driving shaft and has produced the clearance easily at rotatory in-process, leads to the inside possibility of moisture etc. entering transmission, has increased the inside seal of transmission, simultaneously, also is provided with the sealing washer in the valve body junction, and the edge of valve plate also is provided with the valve plate sealing washer, further promotes the leakproofness of this butterfly valve.

Two, this kind of two eccentric hard seal flange butterfly valves, arc arch bridge face and buffer block have been set up at the valve plate, when rotating the valve plate, can reduce rivers to the impact force of valve plate, can disperse the condition at the stress concentration in the course of the work, and then can effectively avoid the valve plate to produce the condition of deflecting or structural deformation because of fatigue or surpassing withstand voltage limit, and simultaneously, the logical groove that sets up can make rivers circulate from it, the manufacturing material and the self weight of valve plate have not only been reduced, the atress of valve plate is also further reduced.

Drawings

The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention, and together with the description serve to explain the invention and not to limit the invention. In the drawings:

fig. 1 is a plan view of a double eccentric hard seal flange butterfly valve of the present invention;

fig. 2 is a cross-sectional view of a double eccentric hard seal flange butterfly valve of the present invention;

fig. 3 is a plan view of the valve plate of the double eccentric hard sealing flange butterfly valve of the present invention.

In the figure: 1. a hand wheel disc; 2. a rotating shaft; 3. a sealing cover; 4. a transmission device; 5. a reinforcement layer; 6. fastening a bolt; 7. a linkage shaft; 8. a flange plate; 9. positioning holes; 10. a valve body; 11. pressing a plate; 12. a seal ring; 13. an upper shaft sleeve; 14. a first fixing pin; 15. a second fixing pin; 16. a through groove; 17. a valve plate; 18. an arc-arched deck; 19. a lower shaft sleeve; 20. a bearing; 21. a tail tray; 22. a screw; 23. a tail cap; 24. a counter shaft; 25. a buffer block; 26. A valve plate seal ring; 27. a main shaft; 28. a connecting plate.

Detailed Description

The preferred embodiments of the present invention will be described in conjunction with the accompanying drawings, and it will be understood that they are presented herein only to illustrate and explain the present invention, and not to limit the present invention.

Example (b): as shown in figures 1-3, the utility model relates to a double eccentric hard sealing flange butterfly valve, which comprises a transmission device 4, one side of the transmission device 4 is movably connected with a rotating shaft 2, one side of the rotating shaft 2 is fixedly connected with a hand wheel disc 1, the top of the transmission device 4 is fixedly connected with a sealing cover 3, the bottom of the transmission device 4 is fixedly connected with a reinforcing layer 5, two sides of the bottom of the reinforcing layer 5 are fixedly connected with fastening bolts 6, the bottom of the reinforcing layer 5 is fixedly connected with a linkage shaft 7, the outer side of the linkage shaft 7 is fixedly connected with a flange 8, the bottom of the flange 8 is fixedly connected with a pressing plate 11, the bottom of the linkage shaft 7 is fixedly connected with a valve body 10, the edge of the valve body 10 is internally provided with a positioning hole 9, the joint of the valve body 10 is fixedly provided with a sealing ring 12, the top of the inner side of the valve body 10 is fixedly connected with an upper shaft sleeve 13, go up axle sleeve 13 bottom fixedly connected with valve plate 17, the inside fixedly connected with main shaft 27 of upper shaft sleeve 13, main shaft 27 top fixed connection is in the inside of universal driving shaft 7, main shaft 27 bottom sets up the inside at valve plate 17, the first fixed pin 14 of inside fixedly connected with and the second fixed pin 15 of main shaft 27 bottom, first fixed pin 14 and second fixed pin 15 run through the inside with main shaft 27 fixed connection at valve plate 17 respectively, axle sleeve 19 under the fixedly connected with of valve plate 17 bottom, the inside fixedly connected with countershaft 24 of lower axle sleeve 19, countershaft 24 bottom outside swing joint has bearing 20, bearing 20 bottom fixedly connected with tail tray 21.

Wherein, valve plate 17 one side sets up to arc arched deck 18, be provided with three logical groove 16 between arc arched deck 18 and the valve plate 17

Wherein, a valve plate sealing ring 26 is fixedly connected with the outer side of the valve plate 17.

The valve plate sealing ring 26 is made of stainless steel.

Wherein, valve plate 17 one side fixedly connected with two connecting plates 28, be provided with the buffer block 25 of fixed connection valve plate 17 between two connecting plates 28.

The bottom of the valve body 10 is provided with a tail top cover 23, the bottom of the tail top cover 23 is fixedly connected with a screw 22, and the screw 22 fixedly connects the tail top cover 23 to the bottom of the valve body 10.

Finally, it should be noted that: in the description of the present invention, it should be noted that the terms "vertical", "upper", "lower", "horizontal", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention.

In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described in the foregoing embodiments, or equivalents may be substituted for elements thereof. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The double-eccentric hard-sealing flange butterfly valve is characterized by comprising a transmission device (4), wherein one side of the transmission device (4) is movably connected with a rotating shaft (2), one side of the rotating shaft (2) is fixedly connected with a hand wheel disc (1), the top of the transmission device (4) is fixedly connected with a sealing cover (3), the bottom of the transmission device (4) is fixedly connected with a reinforcing layer (5), two sides of the bottom of the reinforcing layer (5) are fixedly connected with fastening bolts (6), the bottom of the reinforcing layer (5) is fixedly connected with a linkage shaft (7), the outer side of the linkage shaft (7) is fixedly connected with a flange disc (8), the bottom of the flange disc (8) is fixedly connected with a pressing plate (11), the bottom of the linkage shaft (7) is fixedly connected with a valve body (10), a positioning hole (9) is formed in the edge of the valve body (10), and a sealing ring (12) is fixedly arranged at the joint of the valve body (10), the valve body (10) is characterized in that an upper shaft sleeve (13) is fixedly connected to the top of the inner side of the valve body (10), a valve plate (17) is fixedly connected to the bottom of the upper shaft sleeve (13), a main shaft (27) is fixedly connected to the inside of the linkage shaft (7) at the top of the main shaft (27), the bottom of the main shaft (27) is arranged inside the valve plate (17), a first fixing pin (14) and a second fixing pin (15) are fixedly connected to the inside of the bottom of the main shaft (27), the first fixing pin (14) and the second fixing pin (15) respectively penetrate through the valve plate (17) to fixedly connect the main shaft (27) to the inside of the valve plate (17), a lower shaft sleeve (19) is fixedly connected to the bottom of the valve plate (17), an auxiliary shaft (24) is fixedly connected to the inside of the lower shaft sleeve (19), and a bearing (20) is movably connected to the outer side of the bottom of the auxiliary shaft (24), the bottom of the bearing (20) is fixedly connected with a tail tray (21).

2. A double eccentric hard sealed flange butterfly valve according to claim 1, characterized in that one side of the valve plate (17) is provided with an arc-shaped arch deck (18), and three through slots (16) are provided between the arc-shaped arch deck (18) and the valve plate (17).

3. A double eccentric hard sealing flange butterfly valve according to claim 2, characterized in that a valve plate sealing ring (26) is fixedly connected to the outside of the valve plate (17).

4. A double-eccentric hard-sealing flange butterfly valve according to claim 3, wherein said valve plate seal ring (26) is made of stainless steel.

5. A double eccentric hard sealed flange butterfly valve according to claim 1, characterized in that two connection plates (28) are fixedly connected to one side of the valve plate (17), and a buffer block (25) fixedly connected to the valve plate (17) is arranged between the two connection plates (28).

6. A double eccentric hard sealed flange butterfly valve according to claim 1, characterized in that the bottom of the valve body (10) is provided with a tail cap (23), the bottom of the tail cap (23) is fixedly connected with a screw (22), and the screw (22) fixedly connects the tail cap (23) to the bottom of the valve body (10).