CN210265909U

CN210265909U - Double-eccentric bidirectional sealing soft sealing butterfly valve

Info

Publication number: CN210265909U
Application number: CN201921092186.2U
Authority: CN
Inventors: 陈润福
Original assignee: Shanghai Huhang Valves Co ltd
Current assignee: Shanghai Huhang Valves Co ltd
Priority date: 2019-07-12
Filing date: 2019-07-12
Publication date: 2020-04-07
Anticipated expiration: 2029-07-12

Abstract

The utility model discloses a two eccentric two way seal soft seal butterfly valves belongs to butterfly valve technical field, include the valve body and be located the middle part runs through in the valve body the valve rod of valve body, valve rod seal gland lock screw is installed through valve rod seal gland lock screw in the top of valve body, is located inside and being in the valve rod seal gland lock screw outside is equipped with valve rod seal gland lock nut, the transmission chamber is installed through seal gland and transmission chamber lock screw in seal gland's top, just the tip of valve rod runs through to the inside in transmission chamber with the transmission assembly of transmission intracavity portion mutually supports, is located the inner chamber department of valve body is equipped with the butterfly plate, just the butterfly plate is installed and is located valve body inner chamber department the valve rod outside. The utility model discloses when two eccentric structures are opened entirely butterfly plate breaks away from the sealed face of disk seat completely and closes and open a Q angle of formation, gradually go into the extrusion process, close sealing performance excellence, reduced wearing and tearing, scotch. The service life is prolonged.

Description

Double-eccentric bidirectional sealing soft sealing butterfly valve

Technical Field

The utility model relates to a butterfly valve device especially relates to a two eccentric two way seal soft seal butterfly valves, belongs to butterfly valve technical field.

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 fluids such as air, water, steam, various corrosive media, slurry, oil products, liquid metal, radioactive media and the like, and mainly plays a role in cutting off and throttling on a pipeline.

The traditional process is a processing process of a valve body and butterfly plate combined piece (combined boring), has poor precision and high rejection rate, is easy to misplace, and can not realize reverse sealing, so that a double-eccentric bidirectional sealing soft sealing butterfly valve is needed to solve the problems.

SUMMERY OF THE UTILITY MODEL

The utility model mainly aims at providing a two eccentric two way seal soft seal butterfly valve, owing to open light low in manufacturing cost, can change the maintenance after wearing and tearing, can change the material simultaneously and satisfy different media, user's demand, practical commonality is strong, 90% part is at the same kind of specification, the butterfly valve in latus rectum reaches internals general, exchange, be present water system valve, reverse sealing performance reaches more than 100%, the butterfly plate breaks away from the disk seat completely when sealed principle is two eccentric structure full-open and opens into a Q angle when closing, gradually go into the extrusion process, close sealing performance excellence, wearing and tearing have been reduced, the scotch. The service life is prolonged.

The purpose of the utility model can be achieved by adopting the following technical scheme:

the utility model provides a two eccentric two way seal soft seal butterfly valve, includes the valve body and is located the middle part runs through in the valve body the valve rod of valve body, gland is installed through valve rod gland lock screw in the top of valve body, is located gland is inside and is in the valve rod gland lock screw outside is equipped with valve rod gland lock nut, gland's top is installed the transmission chamber through gland and transmission chamber lock screw, just the tip of valve rod runs through to the inside in transmission chamber with the transmission assembly of transmission intracavity portion mutually supports, is located the inner chamber department of valve body is equipped with the butterfly plate, just the butterfly plate is installed and is located valve body inner chamber department the valve rod outside.

Preferably, a butterfly plate positioning screw is installed between the valve rod and the butterfly plate, and a middle transmission key is arranged on the outer side of the part, located at the inner cavity of the valve body, of the valve rod.

Preferably, a valve rod locking screw and a valve rod locking nut matched with the valve rod locking screw are arranged between the valve body and the sealing gland, and the valve rod locking nut is located in an inner cavity of the sealing gland.

Preferably, the outside of gland is equipped with the stationary blade, just be equipped with the connecting rod on the stationary blade.

Preferably, the outside in transmission chamber is equipped with twist grip, just twist grip pass through drive assembly with the drive assembly of transmission intracavity portion mutually supports.

Preferably, the outer side of the valve rod is located at the intersection of the inner cavity of the sealing gland and the inner side of the valve rod, a packing is arranged at the bottom of the packing, and the packing is sleeved on the outer side of the valve rod.

Preferably, the outer side of the valve rod is located a butterfly plate rubber sealing ring is arranged at the upper end of the inner cavity of the valve body, and the butterfly plate rubber sealing ring is further arranged on the butterfly plate.

Preferably, a sealing ring pressing plate is arranged between the valve rod and the butterfly plate, and a pressing plate locking screw matched with the butterfly plate is arranged on the sealing ring pressing plate.

Preferably, a bottom end cover is arranged at the bottom in the valve body, a bottom end sealing winding gasket is arranged between the bottom end cover and the valve body, a valve rod fixing split ring is arranged between the bottom of the valve rod and the bottom end cover, and a bottom end cover locking screw is arranged between the bottom end cover and the valve body.

Preferably, the valve body with be equipped with oil free bearing between the valve rod, the valve rod is located be equipped with tip transmission key on the transmission chamber.

The utility model has the advantages of:

the utility model provides a pair of two eccentric two way seal soft seal butterfly valves, because open light low in manufacturing cost, can change the maintenance after wearing and tearing, can change the material simultaneously and satisfy different media, user's demand, practical commonality is strong, 90% part is at the same kind of specification, the butterfly valve in latus rectum reaches internals general, exchange, be present water system valve, reverse sealing performance reaches more than 100%, the butterfly plate breaks away from the valve seat completely when sealed principle is two eccentric structure full-open and opens into a Q angle when closing, gradually go into the extrusion process, close sealing performance excellence, the wearing and tearing have been reduced, the scotch. The service life is prolonged.

Drawings

FIG. 1 is a cross-sectional view of a butterfly valve in accordance with a preferred embodiment of a double eccentric, two-way sealing, soft seal butterfly valve in accordance with the present invention;

fig. 2 is a schematic view of a non-pressure state opening light state of a preferred embodiment of a double-eccentric bidirectional sealing soft sealing butterfly valve according to the present invention;

fig. 3 is a schematic diagram showing the changing state of the positive pressure rubber seal ring of a preferred embodiment of a double eccentric bidirectional sealing soft seal butterfly valve according to the present invention;

fig. 4 is a schematic diagram showing the state of change of the back pressure rubber seal ring of a preferred embodiment of a double eccentric bidirectional sealing soft seal butterfly valve according to the present invention;

fig. 5 is a schematic diagram of a seal ring structure of a preferred embodiment of a double eccentric bidirectional sealing soft seal butterfly valve according to the present invention;

fig. 6 is an enlarged view of the seal ring end of a preferred embodiment of a double eccentric bi-directional seal butterfly valve according to the present invention.

In the figure: 1-valve body, 2-valve stem, 3-butterfly plate, 4-butterfly plate set screw, 5-intermediate drive key, 6-oilless bearing, 7-valve stem lock screw, 8-valve stem lock nut, 9-connecting rod, 10-fixing piece, 11-gland and drive cavity lock screw, 12-end drive key, 13-drive cavity, 14-gland, 15-valve stem gland lock nut, 16-valve stem gland lock screw, 17-packing, 18-packing pad, 19-butterfly plate rubber seal, 20-press plate lock screw, 21-seal ring press plate, 22-valve stem fixed split ring, 23-bottom end seal wound gasket, 24-bottom end cover lock screw, 25-bottom end cover, 26-rotating handle.

Detailed Description

In order to make the technical solutions of the present invention clearer and clearer for those skilled in the art, the present invention will be described in further detail with reference to the following embodiments and the accompanying drawings, but the embodiments of the present invention are not limited thereto.

As shown in fig. 1-6, the double-eccentric bidirectional sealing soft seal butterfly valve provided by this embodiment includes a valve body 1 and a valve rod 2 located in the valve body 1 and penetrating through the valve body 1 from the middle, a gland 14 is installed at the top of the valve body 1 through a valve rod gland locking screw 16, a valve rod gland locking nut 15 is located inside the gland 14 and arranged outside the valve rod gland locking screw 16, a transmission cavity 13 is installed at the top of the gland 14 through the gland and the transmission cavity locking screw 11, and the end of the valve rod 2 penetrates through the inside of the transmission cavity 13 and is mutually matched with a transmission component inside the transmission cavity 13, a butterfly plate 3 is arranged at the inner cavity of the valve body 1, and the butterfly plate 3 is installed outside the valve rod 2 located at the inner cavity of the valve body 1.

In this embodiment: a butterfly plate positioning screw 4 is arranged between the valve rod 2 and the butterfly plate 3, and an intermediate transmission key 5 is arranged on the outer side of the part, located in the inner cavity of the valve body 1, of the valve rod 2.

In this embodiment: a valve rod locking screw 7 and a valve rod locking nut 8 matched with the valve rod locking screw 7 are arranged between the valve body 1 and the sealing gland 14, and the valve rod locking nut 8 is positioned in an inner cavity part of the sealing gland 14.

In this embodiment: the outside of the sealing gland 14 is provided with a fixing piece 10, and the fixing piece 10 is provided with a connecting rod 9.

In this embodiment: the outside of transmission chamber 13 is equipped with twist grip 26, and twist grip 26 mutually supports through the transmission subassembly with the transmission subassembly of transmission chamber 13 inside.

In this embodiment: the outer side of the valve rod 2 is provided with a packing 17 at the intersection of the inner cavity of the sealing gland 14 and the inner side of the valve rod 2, the bottom of the packing 17 is provided with a packing pad 18, and the packing pad 18 is sleeved on the outer side of the valve rod 2.

In this embodiment: the outer side of the valve rod 2 is provided with a butterfly plate rubber sealing ring 19 at the upper end of the inner cavity of the valve body 1, and the butterfly plate rubber sealing ring 19 is also arranged on the butterfly plate 3.

In this embodiment: a sealing ring pressing plate 21 is arranged between the valve rod 2 and the butterfly plate 3, and a pressing plate locking screw 20 matched with the butterfly plate 3 is arranged on the sealing ring pressing plate 21.

In this embodiment: the bottom in the valve body 1 is provided with a bottom end cover 25, a bottom end sealing winding gasket 23 is arranged between the bottom end cover 25 and the valve body 1, a valve rod fixing split ring 22 is arranged between the bottom of the valve rod 2 and the bottom end cover 25, and a bottom end cover locking screw 24 is arranged between the bottom end cover 25 and the valve body 1.

In this embodiment: an oilless bearing 6 is arranged between the valve body 1 and the valve rod 2, and the valve rod 2 is arranged on a transmission cavity 13 and is provided with an end transmission key 12.

A positive sealing ring: the rubber sealing ring is deformed under the action of pressure by utilizing the pressure of the pipeline, and the sealing surface of the valve body is extruded to achieve the sealing effect. (figure three description).

Reverse sealing ring: the new generation of standard bidirectional sealed hard-seal triple eccentric butterfly valve is provided with a flat key and a butterfly plate transmission on a valve rod, and a double key structure is used instead, so that the assembly, the replacement and the maintenance are convenient.

In conclusion, in the embodiment, the butterfly valve is light in opening, low in manufacturing cost, capable of being replaced and maintained after being worn, capable of changing materials to meet requirements of different media, high in practicability and universality, 90% of components are universal in internal parts of butterfly valves with the same specification and the same drift diameter, interchangeable, the reverse sealing performance of the best product (bidirectional product) of the existing water system valve reaches over 100%, the sealing principle is that when the butterfly plate is completely separated from the valve seat sealing surface and is opened, a Q angle (shown in the attached drawing) is formed, the extrusion process is gradually carried out, the closing sealing performance is excellent, and the abrasion and the scratch are reduced. The service life is prolonged.

The above description is only a further embodiment of the present invention, but the scope of protection of the present invention is not limited thereto, and any person skilled in the art can replace or change the technical solution and the concept of the present invention within the scope of the present invention.

Claims

1. The utility model provides a two eccentric two way seal soft seal butterfly valve, includes valve body (1) and is located the middle part runs through in valve body (1) valve rod (2) of valve body (1), its characterized in that: seal gland (14) are installed through valve rod seal gland lock screw (16) in the top of valve body (1), are located seal gland (14) are inside and be in valve rod seal gland lock screw (16) outside is equipped with valve rod seal gland lock nut (15), transmission chamber (13) are installed through seal gland and transmission chamber lock screw (11) in the top of seal gland (14), just the tip of valve rod (2) runs through extremely the inside of transmission chamber (13) with the inside transmission assembly of transmission chamber (13) mutually supports, is located the inner chamber department of valve body (1) is equipped with butterfly plate (3), just butterfly plate (3) are installed and are located valve body (1) inner chamber department valve rod (2) outside.

2. The double-eccentric bidirectional sealing soft sealing butterfly valve according to claim 1, characterized in that: the butterfly plate positioning screw (4) is installed between the valve rod (2) and the butterfly plate (3), and the valve rod (2) is located an intermediate transmission key (5) is arranged on the outer side of the inner cavity of the valve body (1).

3. The double-eccentric bidirectional sealing soft sealing butterfly valve according to claim 1, characterized in that: valve body (1) with be equipped with between gland (14) valve rod lock screw (7) and with valve rod lock nut (8) that valve rod lock screw (7) mutually supported, just valve rod lock nut (8) are located the inner chamber portion of gland (14).

4. The double-eccentric bidirectional sealing soft sealing butterfly valve according to claim 1, characterized in that: the outer side of the sealing gland (14) is provided with a fixing plate (10), and the fixing plate (10) is provided with a connecting rod (9).

5. The double-eccentric bidirectional sealing soft sealing butterfly valve according to claim 1, characterized in that: the outside of transmission chamber (13) is equipped with twist grip (26), just twist grip (26) through drive assembly with the inside drive assembly of transmission chamber (13) mutually supports.

6. The double-eccentric bidirectional sealing soft sealing butterfly valve according to claim 1, characterized in that: the outer side of the valve rod (2) is located at the intersection of the inner cavity of the sealing gland (14) and the inner side of the valve rod (2) and is provided with a packing (17), the bottom of the packing (17) is provided with a packing pad (18), and the packing pad (18) is sleeved on the outer side of the valve rod (2).

7. The double-eccentric bidirectional sealing soft sealing butterfly valve according to claim 1, characterized in that: the outer side of the valve rod (2) is located a butterfly plate rubber sealing ring (19) is arranged at the upper end of an inner cavity of the valve body (1), and the butterfly plate rubber sealing ring (19) is further arranged on the butterfly plate (3).

8. The double-eccentric bidirectional sealing soft sealing butterfly valve according to claim 1, characterized in that: the valve rod (2) and be equipped with between butterfly plate (3) sealing washer clamp plate (21), just be equipped with on sealing washer clamp plate (21) with clamp plate lock screw (20) that butterfly plate (3) mutually support.

9. The double-eccentric bidirectional sealing soft sealing butterfly valve according to claim 1, characterized in that: the bottom is equipped with bottom lid (25) in valve body (1), bottom lid (25) with be equipped with bottom sealing winding gasket (23) between valve body (1), the bottom of valve rod (2) with be equipped with valve rod between bottom lid (25) and fix and run from opposite directions ring (22), bottom lid (25) with be equipped with bottom between valve body (1) and cover locking screw (24).

10. The double-eccentric bidirectional sealing soft sealing butterfly valve according to claim 1, characterized in that: the oil-free valve is characterized in that an oil-free bearing (6) is arranged between the valve body (1) and the valve rod (2), and the valve rod (2) is located on the transmission cavity (13) and is provided with a tip transmission key (12).