CN215445098U

CN215445098U - High-performance eccentric butterfly valve

Info

Publication number: CN215445098U
Application number: CN202122017844.5U
Authority: CN
Inventors: 邹立新; 王郑伟; 赵水勤
Original assignee: Hangzhou Shengbao Valve Industry Co ltd
Current assignee: Maxco Industrial Technology (Xi'an) Co.,Ltd.
Priority date: 2021-08-25
Filing date: 2021-08-25
Publication date: 2022-01-07
Anticipated expiration: 2031-08-25

Abstract

The utility model relates to the technical field of valves, and discloses a high-performance eccentric butterfly valve, which solves the problems of poor blocking effect and insufficient performance of the existing eccentric butterfly valve in long-time use and comprises a valve body, wherein a connector is arranged in the middle of the upper end of the valve body, a stepping motor is arranged at the upper end of the connector, a coupler is arranged at the transmission output end of the stepping motor, a valve rod is arranged at the lower end of the coupler, sealing filler is arranged at the position where the valve body is connected with the valve rod, through the arrangement of structures such as an arc surface and a special-shaped sealing ring, when the eccentric butterfly valve is closed, the arc surface can reduce the impact force of water flow on the butterfly plate, so that the butterfly plate is more labor-saving to rotate, the pressure of water on the butterfly plate can be released to the periphery of the butterfly plate, most of the pressure of the water acts on the inclined surface of the special-shaped sealing ring, and the sealing performance between the special-shaped sealing ring and the inner wall of the valve body can be better, the blocking effect of the eccentric butterfly valve on liquid such as water and the like is ensured, and the performance of the eccentric butterfly valve is ensured.

Description

High-performance eccentric butterfly valve

Technical Field

The utility model belongs to the technical field of valves, and particularly relates to a high-performance eccentric butterfly valve.

Background

Butterfly valves are components used for switching on and off and controlling flow of pipeline systems, are widely applied to various fields such as petroleum, chemical industry, metallurgy, hydropower and the like, are divided into single-eccentric butterfly valves, double-eccentric butterfly valves, triple-eccentric butterfly valves, variable-eccentric butterfly valves and the like, and are widely applied to industries such as petroleum, chemical industry, electric power and the like.

However, the existing eccentric butterfly valve is poor in blocking effect after being used for a long time, performance is insufficient, the joint of the stepping motor and the valve rod of the existing eccentric butterfly valve is easy to damage, and sealing performance between a rotating part such as the valve rod and the valve body is insufficient, so that the high-performance eccentric butterfly valve is provided.

Disclosure of Invention

Aiming at the situation, in order to overcome the defects of the prior art, the utility model provides the high-performance eccentric butterfly valve, and the problems of poor blocking effect and insufficient performance of the existing eccentric butterfly valve in long-time use are effectively solved.

In order to achieve the purpose, the utility model provides the following technical scheme: high performance eccentric butterfly valve, including the valve body, valve body upper end middle part is provided with the connector, the connector upper end is provided with step motor, step motor transmission output is provided with the shaft coupling, the shaft coupling lower extreme is provided with the valve rod, the valve body with the position that the valve rod is connected is provided with sealing filler, sealing filler lower extreme is provided with first seal bearing, valve rod lower extreme periphery is provided with the butterfly plate, butterfly plate both sides wall middle part all is provided with the arcwall face, is located the arcwall face outlying be provided with abnormal shape sealing washer on the butterfly plate lateral wall, butterfly plate lower extreme middle part is provided with the connecting rod, connecting rod lower extreme periphery is provided with second seal bearing.

Preferably, the lower end of the connector is welded with the valve body, the stepping motor is connected with the upper end of the connector through a bolt, and the transmission output end of the stepping motor is connected with the upper end of the valve rod through the coupler.

Preferably, the sealing filler is filled between the valve rod and the valve body, the first sealing bearing inner ring is in interference connection with the valve rod, and the first sealing bearing outer ring is in interference connection with the valve body.

Preferably, the valve rod is connected with the valve body through the first sealing bearing, the lower end of the valve rod is connected with the middle part of the upper end of the butterfly plate through a key, and the butterfly plate is rotatably connected with the inner wall of the valve body.

Preferably, the arcwall face shaping in on the butterfly plate lateral wall, heterotypic sealing washer with the butterfly plate splices, heterotypic sealing washer with the valve body inner wall rotates to be connected, the connecting rod upper end with butterfly plate lower extreme middle part is through the key-type connection.

Preferably, the second sealed bearing inner ring is in interference connection with the connecting rod, the second sealed bearing outer ring is in interference connection with the valve body, the connecting rod is connected with the valve body through the second sealed bearing, and connecting flanges are formed at two ends of the valve body.

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

1) in the high-performance eccentric butterfly valve, through the arrangement of structures such as the arc surface and the special-shaped sealing ring, when the eccentric butterfly valve is closed, the arc surface can reduce the impact force of water flow on the butterfly plate, so that the butterfly plate can rotate more labor-saving, and the pressure of water on the butterfly plate can be released to the periphery of the butterfly plate, most of the pressure of the water acts on the inclined surface of the special-shaped sealing ring, so that the sealing property between the special-shaped sealing ring and the inner wall of the valve body is better, the blocking effect of the eccentric butterfly valve on liquid such as water is ensured, the performance of the eccentric butterfly valve is ensured, and the problems of poor blocking effect and insufficient performance of the existing eccentric butterfly valve in long-time use are solved;

2) in this high performance eccentric butterfly valve, through setting up the shaft coupling, can make step motor and valve rod not fragile, and can guarantee valve rod and step motor's stability of being connected, sealing filler, first sealed bearing and second sealed bearing can guarantee the leakproofness between valve rod and connecting rod and the valve body, and is very practical, and the junction of the step motor who has solved current eccentric butterfly valve and valve rod damages easily, and the problem that the leakproofness between rotation piece and the valve body such as valve rod is not enough.

Drawings

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

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

FIG. 2 is a side cross-sectional view of the present invention;

FIG. 3 is a schematic structural view of a butterfly plate according to the present invention;

in the figure: 1. a valve body; 2. a connector; 3. a stepping motor; 4. a coupling; 5. a valve stem; 6. sealing and filling; 7. a first sealed bearing; 8. a butterfly plate; 9. an arc-shaped surface; 10. a special-shaped sealing ring; 11. a connecting rod; 12. a second sealed bearing; 13. and connecting the flanges.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments; all other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the embodiment, as shown in fig. 1-3, the valve comprises a valve body 1, a connector 2 is arranged in the middle of the upper end of the valve body 1, a stepping motor 3 is arranged at the upper end of the connector 2, a coupler 4 is arranged at the transmission output end of the stepping motor 3, a valve rod 5 is arranged at the lower end of the coupler 4, a sealing filler 6 is arranged at the position where the valve body 1 is connected with the valve rod 5, a first sealing bearing 7 is arranged at the lower end of the sealing filler 6, a butterfly plate 8 is arranged at the periphery of the lower end of the valve rod 5, arc surfaces 9 are arranged in the middle of the two side walls of the butterfly plate 8, a special-shaped sealing ring 10 is arranged on the side wall of the butterfly plate 8 at the periphery of the arc surfaces 9, a connecting rod 11 is arranged in the middle of the lower end of the butterfly plate 8, and a second sealing bearing 12 is arranged at the periphery of the lower end of the connecting rod 11.

Wherein, 2 lower extremes of connector and 1 welding of valve body, bolted connection is passed through with 2 upper ends of connector to step motor 3, and step motor 3 transmission output end is connected through shaft coupling 4 with 5 upper ends of valve rod, and step motor 3 drives valve rod 5 and rotates at during operation accessible shaft coupling 4.

Wherein, packing 6 is filled between valve rod 5 and valve body 1, and 7 inner circles of first seal bearing are connected with 5 interference of valve rod, and 7 outer circles of first seal bearing are connected with 1 interference of valve body, and 7 first seal bearing have the auxiliary action to 5 rotations of valve rod, and first seal bearing 7 and packing 6 can make and have good leakproofness between valve rod 5 and the valve body 1.

Wherein, valve rod 5 is connected through first sealed bearing 7 with valve body 1, and the key-type connection is passed through with 8 upper end middle parts of butterfly plate to 5 lower extremes of valve rod, and butterfly plate 8 rotates with 1 inner wall of valve body to be connected, and valve rod 5 can drive butterfly plate 8 and rotate in step when rotating.

Wherein, the arcwall face 9 shaping is on 8 lateral walls of butterfly plates, heterotypic sealing washer 10 splices with 8 butterfly plates, heterotypic sealing washer 10 rotates with 1 inner wall of valve body to be connected, 11 upper ends of connecting rod and 8 lower extreme middle parts of butterfly plates pass through the key-type connection, arcwall face 9 can reduce rivers to the impact force of butterfly plates 8, it is more laborsaving to make butterfly plates 8 rotate, and can be with the pressure of water to butterfly plates 8 to the peripheral pressure release of butterfly plates 8, the pressure majority of this kind of water acts on the inclined plane of heterotypic sealing washer 10, can make the leakproofness better between heterotypic sealing washer 10 and the 1 inner wall of valve body, guarantee the performance of eccentric butterfly valve.

Wherein, the 12 inner circles of second sealed bearing are connected with 11 interference of connecting rod, the 12 outer circles of second sealed bearing are connected with 1 interference of valve body, connecting rod 11 is connected through second sealed bearing 12 with valve body 1, 1 both ends of valve body all take shape there is flange 13, second sealed bearing 12 can make and have good leakproofness between connecting rod 11 and the valve body 1, connecting rod 11 and second sealed bearing 12 can play the additional action to the rotation of butterfly plate 8, still can improve butterfly plate 8's stability.

The working principle is as follows: the eccentric butterfly valve uses an external power supply and is controlled by external equipment to work, the eccentric butterfly valve can be connected and installed on a pipeline through a connecting flange 13, when the eccentric butterfly valve is closed, the arc-shaped surface 9 can reduce the impact force of water flow on the butterfly plate 8, so that the butterfly plate 8 rotates more labor-saving, and the pressure of water on the butterfly plate 8 can be released to the periphery of the butterfly plate 8, most of the pressure of the water acts on the inclined surface of the special-shaped sealing ring 10, the sealing performance between the special-shaped sealing ring 10 and the inner wall of the valve body 1 is better, the blocking effect of the eccentric butterfly valve on liquid such as water and the like is ensured, the performance of the eccentric butterfly valve is ensured, when the eccentric butterfly valve needs to be opened to enable the liquid such as water and the like to pass through, the stepping motor 3 can work, the stepping motor 3 can drive the valve rod 5 to rotate through the coupler 4 when working, thus under the assistance of the first sealing bearing 7, the second sealing bearing 12 and the connecting rod 11, the butterfly plate 8 can deflect gradually, so that the inner part of the eccentric butterfly valve is opened, liquid can pass through, the first sealing bearing 7 and the sealing packing 6 can enable the valve rod 5 and the valve body 1 to have good sealing performance, and the second sealing bearing 12 can enable the connecting rod 11 and the valve body 1 to have good sealing performance.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. High performance eccentric butterfly valve, including valve body (1), its characterized in that: a connector (2) is arranged in the middle of the upper end of the valve body (1), a stepping motor (3) is arranged at the upper end of the connector (2), the transmission output end of the stepping motor (3) is provided with a coupler (4), the lower end of the coupler (4) is provided with a valve rod (5), a sealing filler (6) is arranged at the position where the valve body (1) is connected with the valve rod (5), a first sealing bearing (7) is arranged at the lower end of the sealing packing (6), a butterfly plate (8) is arranged on the periphery of the lower end of the valve rod (5), the middle parts of the two side walls of the butterfly plate (8) are respectively provided with an arc-shaped surface (9), the side wall of the butterfly plate (8) positioned at the periphery of the arc-shaped surfaces (9) is provided with a special-shaped sealing ring (10), the butterfly plate is characterized in that a connecting rod (11) is arranged in the middle of the lower end of the butterfly plate (8), and a second sealing bearing (12) is arranged on the periphery of the lower end of the connecting rod (11).

2. The high performance eccentric butterfly valve of claim 1, wherein: connector (2) lower extreme with valve body (1) welding, step motor (3) with bolted connection is passed through to connector (2) upper end, step motor (3) transmission output with valve rod (5) upper end is passed through shaft coupling (4) are connected.

3. The high performance eccentric butterfly valve of claim 1, wherein: the sealing filler (6) is filled between the valve rod (5) and the valve body (1), the inner ring of the first sealing bearing (7) is in interference connection with the valve rod (5), and the outer ring of the first sealing bearing (7) is in interference connection with the valve body (1).

4. The high performance eccentric butterfly valve of claim 1, wherein: valve rod (5) with valve body (1) passes through first sealed bearing (7) are connected, valve rod (5) lower extreme with butterfly plate (8) upper end middle part is through the key-type connection, butterfly plate (8) with valve body (1) inner wall rotates and is connected.

5. The high performance eccentric butterfly valve of claim 1, wherein: arcwall face (9) shaping in on butterfly plate (8) lateral wall, heterotypic sealing washer (10) with butterfly plate (8) splice, heterotypic sealing washer (10) with valve body (1) inner wall rotates and is connected, connecting rod (11) upper end with butterfly plate (8) lower extreme middle part is through the key-type connection.

6. The high performance eccentric butterfly valve of claim 1, wherein: second sealed bearing (12) inner circle with connecting rod (11) interference connection, second sealed bearing (12) outer lane with valve body (1) interference connection, connecting rod (11) with valve body (1) passes through second sealed bearing (12) are connected, valve body (1) both ends all shaping have flange (13).