CN217207961U

CN217207961U - Double-flange butterfly valve

Info

Publication number: CN217207961U
Application number: CN202220841694.1U
Authority: CN
Inventors: 张国栋; 李长远; 付海洋; 孙志国
Original assignee: Tianjin Outshine Valve Co ltd
Current assignee: Tianjin Outshine Valve Co ltd
Priority date: 2022-04-08
Filing date: 2022-04-08
Publication date: 2022-08-16
Anticipated expiration: 2032-04-08

Abstract

The utility model provides a two flange butterfly valves, including the butterfly valve body, the equal rigid coupling of butterfly valve body both ends opening part has first flange, every first flange outside is all pegged graft and is had the second flange, external pipeline can be connected in the second flange outside, first flange includes first disk body and sets up in the snap ring of first disk body one side, the first through-hole circumference outside setting in the middle of the snap ring edge first disk body, the second flange includes the second disk body, it is equipped with the outside U type draw-in groove of opening to correspond snap ring department in second disk body one side, it is equipped with the sealing washer to lie in the second through-hole circumference outside department in the middle of the second disk body on the draw-in groove inside wall, first flange passes through the cooperation joint of snap ring and draw-in groove together, and the sealed face in the snap ring outside compresses tightly with the sealing washer. The utility model discloses beneficial effect: make things convenient for the dismouting between butterfly valve body and the outside pipeline, can directly take off the butterfly valve body between two second flanges and need not to dismantle the bolt that uses when first flange and outside pipeline are connected one by one again.

Description

Double-flange butterfly valve

Technical Field

The utility model belongs to the technical field of the butterfly valve, especially, relate to a double flange butterfly valve.

Background

The double-flange butterfly valve is a butterfly valve with flanges at the through holes at the two sides of the valve body, the two sides of the butterfly valve are connected with an external pipeline through the flanges, and the flanges are connected with the flange on the external pipeline through a plurality of pairs of bolt and nut pairs. Need pull down the butterfly valve and maintain it after long-term the use, during the dismantlement, often need pull down all bolt and nut pairs of connecting on two flanges one by one and just can take off the butterfly valve in the pipe connection, however this operation is more loaded down with trivial details, difficult dismantlement, loses spare part very easily at the dismantlement in-process, and dismantlement also slower.

SUMMERY OF THE UTILITY MODEL

In view of this, the utility model discloses aim at overcoming the shortcoming of the above-mentioned problem in the prior art, provide a double flange butterfly valve.

In order to achieve the above purpose, the technical scheme of the utility model is realized like this:

the utility model provides a double flange butterfly valve, including the butterfly valve body, first flange, the second flange, the equal rigid coupling of butterfly valve body both ends opening part has first flange, every first flange outside is all pegged graft and is had the second flange, external pipeline can be connected in the second flange outside, first flange includes first disk body and sets up in the snap ring of first disk body one side, the first through-hole circumference outside setting in the middle of the snap ring edge first disk body, the second flange includes the second disk body, it is equipped with the outside U type draw-in groove of opening to correspond snap ring department in second disk body one side, it is equipped with the sealing washer to lie in second through-hole circumference outside department in the middle of the second disk body on the draw-in groove inside wall, first flange passes through the snap ring and is in the same place with the cooperation joint of draw-in groove, and the sealed face in the snap ring outside compresses tightly with the sealing washer.

Furthermore, the clamping ring and the first through hole are coaxially arranged, and the sealing ring and the second through hole are also coaxially arranged.

Further, the snap ring includes annular connecting portion and card edge, and annular connecting portion one end is connected with first disk body lateral wall, and the outside protrusion in other end circumference is equipped with the card edge, and the draw-in groove sets up towards one side opening of first disk body to seted up the spacing groove on the U type inside wall along the draw-in groove, the equal opening in both ends of spacing groove sets up, and the snap ring is pegged graft in the draw-in groove, and the card edge inlays at the spacing inslot, and the setting is tightly held out in the counterbalance between card edge and the sealing washer.

Furthermore, an annular sealing groove is formed in the inner side wall of the clamping groove corresponding to the periphery of the second through hole and arranged on the outer side, the sealing ring is embedded in the sealing groove, and the outer side of the sealing ring protrudes out of the opening of the sealing groove.

Furthermore, the clamping groove is horizontally arranged.

Furthermore, a first connecting hole is formed in one end of the first disc body, a first U-shaped groove is formed in the other end of the first disc body, the opening end of the first U-shaped groove is located at the circumferential surface of the first disc body, a second U-shaped groove is formed in the second disc body corresponding to the first connecting hole, a second connecting hole is formed in the first U-shaped groove corresponding to the first U-shaped groove, the second U-shaped groove and the clamping groove are arranged in parallel, and the first connecting hole and the second U-shaped groove and the first U-shaped groove and the second connecting hole are connected together in a fastened mode through bolt connecting pairs.

Furthermore, the number of the second U-shaped grooves is two, and the second U-shaped grooves are symmetrically distributed on two sides of the clamping groove.

Compared with the prior art, the utility model discloses following advantage has:

double flange butterfly valve set up the first flange of butterfly valve body both sides into the structure that has the snap ring, the second flange that will be connected with first flange sets up into the structure that has the draw-in groove, first flange and second flange link together through the joint cooperation of snap ring and draw-in groove, and set up the sealing washer between snap ring and draw-in groove inner wall, play sealed effect, avoid the medium in the outside pipeline to follow the junction seepage of first flange and second flange on the one hand, on the other hand also avoids taking place the displacement between butterfly valve body and the second flange, increased the friction between butterfly valve body and the second flange promptly, ensure the connection stability between butterfly valve body and the second flange. This structure makes things convenient for the dismouting between butterfly valve body and the outside pipeline, especially when dismantling the butterfly valve body after long-time the use, can directly take off the butterfly valve body from between two second flanges, need not to dismantle the bolt that uses when first flange and outside pipe connection one by one again.

Drawings

The accompanying drawings, which form a part hereof, 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 without undue limitation. In the drawings:

fig. 1 is a schematic structural view of a double-flange butterfly valve according to an embodiment of the present invention;

fig. 2 is a schematic structural view of a first flange according to an embodiment of the present invention;

fig. 3 is a cross-sectional view of a first flange according to an embodiment of the present invention;

fig. 4 is a schematic structural view of a second flange according to an embodiment of the present invention;

fig. 5 is a cross-sectional view of the first flange and the second flange according to the embodiment of the present invention when the bolt connection pair is not tightened;

fig. 6 is a cross-sectional view of the first flange and the second flange when the bolt connection pair is tightened according to the embodiment of the present invention.

Description of reference numerals:

1. a butterfly valve body; 2. a first flange; 21. a first tray body; 22. a snap ring; 221. an annular connecting portion; 222. clamping edges; 2221. a sealing surface; 23. a first connection hole; 24. a first U-shaped groove; 3. a second flange; 31. a second tray body; 32. a card slot; 321. a limiting groove; 33. a sealing groove; 34. a seal ring; 35. a second connection hole; 36. a second U-shaped groove; 4. an external pipe; l1, first gap; l2, second gap.

Detailed Description

It should be noted that, in the present invention, the embodiments and features of the embodiments may be combined with each other without conflict.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are used merely for convenience of description and for simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention. Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; 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 by those of ordinary skill in the art through specific situations.

The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.

As shown in the figure, a double-flange butterfly valve, including butterfly valve body 1, first flange 2, second flange 3, the equal rigid coupling in 1 both ends opening part of butterfly valve body has first flange 2, every 2 outside first flanges all are pegged graft and are had second flange 3, outside pipeline 4 can be connected in the 3 outside of second flange, first flange 2 includes first disk body 21 and sets up in the snap ring 22 of first disk body 21 one side, snap ring 22 sets up along the first through-hole circumference outside in the middle of first disk body 21, second flange 3 includes second disk body 31, it is equipped with the outside U type draw-in groove 32 to correspond snap ring 22 department in second disk body 31 one side, it is equipped with sealing washer 34 to be located the outside second through-hole circumference outside department in the middle of second disk body 31 on draw-in groove 32 inside wall, first flange 2 is in the same place through the cooperation joint of snap ring 22 with draw-in groove 32, and the sealed face 2221 and the sealing washer 34 in the snap ring 22 outside compress tightly. In this embodiment, 1 both sides of butterfly valve body are in the same place through grafting of first flange 2 and second flange 3 and external pipeline 4 links together, make things convenient for the dismouting of butterfly valve body 1, when especially dismantling butterfly valve body 1 after long-time the use, can directly take off butterfly valve body 1 from between two second flanges 3, need not to dismantle the bolt that first flange 2 and external pipeline 4 used when being connected one by one again. In this embodiment, 1 both ends opening part of butterfly valve body and first flange 2 welded connection, also welded connection between second flange 3 and the external pipeline 4.

The clamping ring 22 and the first through hole are coaxially arranged, and the sealing ring 34 and the second through hole are also coaxially arranged, so that the first flange 2 and the second flange 3 can be conveniently connected.

The snap ring 22 includes annular connecting portion 221 and card edge 222, annular connecting portion 221 one end is connected with first disk body 21 lateral wall, the outside protrusion of other end circumference is equipped with card edge 222, draw-in groove 32 sets up towards one side opening of first disk body 21, and set up spacing groove 321 on the U type inside wall of draw-in groove 32, the equal opening in both ends of spacing groove 321 sets up, the snap ring 22 is pegged graft in draw-in groove 32, and the card edge 222 inlays in spacing groove 321, the card edge 222 and the tight setting of counterbalance between the sealing washer 34. In this embodiment, the annular connecting portion 221, the retaining rim 222 and the first tray 21 are integrally formed or welded.

The annular seal groove 33 is formed in the inner side wall of the clamping groove 32 corresponding to the periphery of the second through hole and located on the outer side, the sealing ring 34 is embedded in the seal groove 33, the outer side of the sealing ring 34 protrudes out of the opening of the seal groove 33, the clamping ring 22 can be clamped into the clamping groove 32 conveniently, a pressing and abutting state is formed between the clamping ring 34, the sealing effect between the first flange 2 and the second flange 3 is effectively achieved, the butterfly valve body 1 is prevented from being opened, and the medium in the external pipeline 4 leaks when flowing through the position. In this embodiment, the sealing ring 34 is fixed in the sealing groove 33 by bonding, so as to prevent the sealing ring 34 from being taken away from the sealing groove 3 when the snap ring 22 of the first flange 2 is inserted into the snap groove 32.

In this embodiment, an opening edge of the locking groove 32 facing the first disc 21 is located outside the sealing groove 33, so as to facilitate installation of the sealing ring 34 into the sealing groove 33.

Draw-in groove 32 horizontal setting, snap ring 22 inserts in the draw-in groove 32 and fixes along the horizontal direction promptly, avoids making between snap ring 22 and the draw-in groove 32 to break away from because of butterfly valve body 1 self weight or second flange 3 and outside pipeline 4 self weight in the butterfly valve use, also conveniently takes out butterfly valve body 1 from the level between two second flanges 3 simultaneously.

First disk body 21 one end has been seted up first connecting hole 23, first U type groove 24 has been seted up to the other end, and first U type groove 24 open end is located first disk body 21 circumferential surface department, it is equipped with second U type groove 36 to correspond first connecting hole 23 department on the second disk body 31, it is equipped with second connecting hole 35 to correspond first U type groove 24 department, first U type groove 24, second U type groove 36 and draw-in groove 32 parallel arrangement, and between first connecting hole 23 and second U type groove 36, all be in the same place through the vice fastening connection of bolted connection between first U type groove 24 and the second connecting hole 35. When dismantling butterfly valve body 1, only need unscrew the vice nut of bolted connection, need not all to pull down whole bolted connection is vice and just can take off butterfly valve body 1 from between two second flanges 3 from first flange 2, second flange 3. In this embodiment, the first connecting hole 23 and the second U-shaped groove 36, and the first U-shaped groove 24 and the second connecting hole 35 are fastened together by bolt fastening pairs to further fasten the connection between the first flange 2 and the second flange 3, so that the sealing surface 222 is more attached to the sealing ring 34.

The number of the second U-shaped grooves 36 is two, and the second U-shaped grooves are symmetrically distributed on two sides of the slot 32.

In this embodiment, when a side wall of the snap ring 22 opposite to the sealing surface 2221 is tightly attached to a corresponding inner side wall of the slot 32, a first gap L1 is formed between two opposite side walls of the first tray 21 and the second tray 31, and a certain gap is left between the sealing surface 2221 and the inner side wall of the slot 32 opposite to the sealing surface 2221, so that the snap ring is conveniently inserted inward to deform the sealing ring 34. When the first gap L1 gradually decreases until the two opposite side walls of the first tray body 21 and the second tray body 31 are tightly attached together, that is, the gap width of the first gap L1 tends to 0, a second gap L2 is generated between one side wall of the snap ring 22 opposite to the sealing surface 2221 and the corresponding inner side wall of the snap groove 32, and at this time, the bolt connection pair is tightened, so that the sealing surface 2221 presses and tightly attaches the sealing ring 34 to ensure the sealing effect at the position of the sealing ring 34.

The working process of the embodiment is as follows:

the two sides of the butterfly valve body 1 are connected with an external pipeline 4 through the insertion connection of the first flange 2 and the second flange 3, specifically, the clamping ring 22 on the first flange 2 is horizontally inserted inwards from the opening of the clamping groove 32 of the second flange 3 until the clamping ring is finally inserted to the bottom of the clamping groove 32, and at the moment, the clamping ring 22 and the sealing ring 34 are tightly abutted to realize sealing; in addition, the first flange 2 and the second flange 3 are horizontally inserted, so that the situation that the clamping ring 22 is separated from the clamping groove 32 due to the self weight of the butterfly valve body 1 or the self weight of the second flange 3 and the external pipeline 4 in the use process of the butterfly valve is avoided, and meanwhile, the butterfly valve body 1 can be conveniently horizontally taken out from the space between the two second flanges 3; after first flange 2 and second flange 3 closely peg graft together, can also be through bolted connection vice between with first connecting hole 23 and second U type groove 36, fastening connection is in the same place between first U type groove 24 and the second connecting hole 35, ensures the stability of being connected between first flange 2 and the second flange 3 in the use, when butterfly valve body 1 was dismantled to needs this moment, also only need unscrew bolted connection vice and need not to take out butterfly valve body 1 from between two second flanges 3 with the vice whole dismantlement of bolted connection.

The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides a two flange butterfly valves which characterized in that: including the butterfly valve body, first flange, the second flange, the equal rigid coupling of butterfly valve body both ends opening part has first flange, every first flange outside all is pegged graft and is had the second flange, outside pipeline can be connected in the second flange outside, first flange includes first disk body and sets up in the snap ring of first disk body one side, the first through-hole circumference outside setting in the middle of the first disk body is followed to the snap ring, the second flange includes the second disk body, it is equipped with the outside U type draw-in groove of opening to correspond snap ring department in second disk body one side, it is equipped with the sealing washer to lie in the outside department in the middle of the second through-hole week of second disk body on the draw-in groove inside wall, first flange passes through the snap ring and is in the same place with the cooperation joint of draw-in groove, and the sealed face in the snap ring outside compresses tightly with the sealing washer.

2. A double flange butterfly valve according to claim 1, wherein: the snap ring and the first through hole are coaxially arranged, and the sealing ring and the second through hole are also coaxially arranged.

3. A double flange butterfly valve according to claim 1, wherein: the snap ring includes annular connecting portion and card edge, and annular connecting portion one end is connected with first disk body lateral wall, and the outside protrusion of other end circumference is equipped with the card edge, and the draw-in groove sets up towards one side opening of first disk body to seted up the spacing groove on the U type inside wall along the draw-in groove, the equal opening in both ends of spacing groove sets up, and the snap ring is pegged graft in the draw-in groove, and the card edge inlays at the spacing inslot, and the setting is tightly supported between card edge and the sealing washer.

4. A double flange butterfly valve according to claim 1, wherein: an annular sealing groove is formed in the inner side wall of the clamping groove corresponding to the periphery of the second through hole, the sealing ring is embedded in the sealing groove, and the outer side of the sealing ring protrudes out of the opening of the sealing groove.

5. A double flange butterfly valve according to claim 3, wherein: the clamping groove is horizontally arranged.

6. A double flange butterfly valve according to claim 1, wherein: first connecting hole has been seted up to first disk body one end, and first U type groove has been seted up to the other end, and first U type groove open end is located first disk body circumference surface department, is equipped with second U type groove corresponding first connecting hole department on the second disk body, corresponds first U type groove department and is equipped with the second connecting hole, first U type groove, second U type groove and draw-in groove parallel arrangement, and between first connecting hole and the second U type groove, all link together through the vice fastening of bolted connection between first U type groove and the second connecting hole.

7. A double flange butterfly valve according to claim 6, wherein: the number of the second U-shaped grooves is two, and the second U-shaped grooves are symmetrically distributed on two sides of the clamping groove.