CN217207772U - Split butterfly valve - Google Patents

Abstract

The application discloses split type butterfly valve, it includes the butterfly plate, the valve rod, the valve body, driving piece and seal assembly, the valve rod alternates in the butterfly plate center, the butterfly plate is sealed around the upset in valve body center, the driving piece rotates with the valve rod to be connected, the seal assembly embedding is installed in the valve body, seal assembly includes the rubber ring, the cavity, the spacer, first gas pocket, the arc piece, the cross body, the extrusion chamber, passageway and check valve, the rubber ring has been distributed in the cavity, the prefabrication is equipped with first gas pocket on the spacer, the prefabrication is equipped with the second gas pocket on the arc piece, the second gas pocket link up with first gas pocket. Through optimizing and setting up sealing assembly, the check valve guarantees that gaseous uniflow to extrusion intracavity to shift to other places through second gas pocket, first gas pocket, sealing assembly surface and valve rod closely laminate, play sealed effect. Can cooperate with the sealing washer that the butterfly plate edge set up and the sealing washer that sets up on the valve rod mouth cooperate, realize multiple sealed effect, improve the leakproofness of butterfly valve, it is sealed effectual.

Description

Split butterfly valve

Technical Field

The application relates to the technical field of valve bodies, in particular to a split type butterfly valve.

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 opening and closing piece is a disc-shaped butterfly plate and rotates around the axis of the butterfly plate in the valve body, so that the opening and closing or adjusting purpose is achieved.

The butterfly valve in the prior art has the advantages that due to the fact that the structural design is fixed and the sealing structure is designed differently, the sealing effect is general and the using effect is general in practical application.

SUMMERY OF THE UTILITY MODEL

Additional features and advantages of the application will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by the practice of the application. The objectives and other advantages of the application may be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.

The utility model provides a split type butterfly valve is provided in aim at overcoming above-mentioned not enough.

In order to achieve the purpose, the technical solution of the application is as follows:

the utility model provides a split type butterfly valve, including the butterfly plate, the valve rod, the valve body, driving piece and seal assembly, the valve rod alternates in the butterfly plate center, the butterfly plate is around the central upset of valve body sealed, the driving piece rotates with the valve rod to be connected, seal assembly embedding is installed in the valve body, seal assembly includes the rubber ring, the cavity, the spacer plate, first gas pocket, the arc piece, the second gas pocket, the cross body, the extrusion chamber, passageway and check valve, the rubber ring has been distributed in the cavity, the prefabrication is equipped with first gas pocket on the spacer plate, the prefabrication is equipped with the second gas pocket on the arc piece, the second gas pocket is link up with first gas pocket, the cross body is installed in the arc piece inboard support, cross body side end sets up the extrusion chamber, the extrusion chamber link up with the passageway mutually, the check valve is installed in the embedding on the passageway.

Preferably, the valve body comprises a first valve body, a second valve body and a valve rod port, and the valve rod port is prefabricated in the first valve body and the second valve body.

Preferably, two valve rod ports are arranged and correspond to each other.

Preferably, there are two seal assemblies.

Preferably, at least two arcuate segments, two intersections, are provided for a single seal assembly.

Preferably, the driving member is a tilt cylinder.

Preferably, the valve body is provided with a bearing, and the bearing is in clearance fit with the valve rod.

Through adopting foretell technical scheme, the beneficial effect of this application is:

this application sets up seal assembly through optimizing, and the check valve guarantees that gaseous uniflow to extrusion intracavity to shift to other places through second gas pocket, first gas pocket, the seal assembly surface closely laminates with the valve rod, plays sealed effect. Can cooperate with the sealing washer that sets up with butterfly plate edge and the sealing washer that sets up on the valve rod mouth cooperate, realize multiple sealed effect, improve the leakproofness of butterfly valve, sealed effectual, excellent in use effect.

Drawings

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

In the drawings, like parts are designated with like reference numerals, and the drawings are schematic and not necessarily drawn to scale.

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only one or several embodiments of the present application, and for those skilled in the art, other drawings can be obtained according to such drawings without creative efforts.

FIG. 1 is a schematic structural diagram of a split butterfly valve according to the present application;

FIG. 2 is a schematic structural diagram of a valve body of a split butterfly valve according to the present application;

fig. 3 is a partial enlarged view of a portion a of fig. 2 of the present application.

Description of the main reference numerals:

1. a butterfly plate;

2. a valve stem;

3. a valve body;

31. a first valve body; 32. a second valve body; 33. a valve stem port;

4. a drive member;

5. a seal assembly;

51. a rubber ring; 52. a cavity; 53. a spacer sheet; 54. a first air hole; 55. an arc-shaped sheet; 56. a second air hole; 57. a cross-body; 58. an extrusion chamber; 59. a channel; 510. a one-way valve.

Detailed Description

In order to make the objects, technical solutions and advantages of the present application more apparent, the present application is further described in detail with reference to the following detailed description. It should be understood that the detailed description and specific examples, while indicating the present application, are given by way of illustration only.

In addition, in the description of the present application, it is to be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", and the like, indicate orientations and positional relationships based on those shown in the drawings, are only for convenience of description and simplicity of description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present application.

In this application, unless expressly stated or limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly and encompass, for example, both fixed and removable connections or integral parts thereof; either directly or indirectly through intervening media, either internally or in any other relationship. However, the direct connection means that the two bodies are not connected through a transition structure, but are connected through a connection structure to form a whole. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.

In this application, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through intervening media. In the description herein, reference to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., means that a particular feature, structure, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present application. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

Referring to fig. 1 to 3, fig. 1 is a schematic structural view of a split butterfly valve according to the present application; FIG. 2 is a schematic structural diagram of a valve body of a split butterfly valve according to the present application; fig. 3 is a partial enlarged view of a portion a of fig. 2 of the present application.

The embodiment provides a split butterfly valve, which comprises a butterfly plate 1, a valve rod 2, a valve body 3, a driving part 4 and a sealing component 5, wherein the valve rod 2 is inserted in the center of the butterfly plate 1, the butterfly plate 1 is overturned and sealed around the center of the valve body 3, the driving part 4 is rotatably connected with the valve rod 2, the sealing component 5 is embedded in the valve body 3, the sealing component 5 comprises a rubber ring 51, a cavity 52 and a spacing piece 53, the air-tight structure comprises a first air hole 54, an arc-shaped sheet 55, a second air hole 56, a cross body 57, an extrusion cavity 58, a channel 59 and a one-way valve 510, wherein rubber rings 51 are distributed in a cavity 52, the first air hole 54 is prefabricated on a spacer 53, the second air hole 56 is prefabricated on the arc-shaped sheet 55, the second air hole 56 is communicated with the first air hole 54, the cross body 57 is supported and installed in the arc-shaped sheet 55, the extrusion cavity 58 is arranged at the side end of the cross body 57, the extrusion cavity 58 is communicated with the channel 59, and the one-way valve 510 is embedded and installed on the channel 59. The check valve 510 can check the input of air from the outside, so as to adjust the air pressure of the extrusion chamber 58, and the air in the extrusion chamber 58 can flow through the second air hole 56, the first air hole 54 and the air in the cavity 52. The driving piece 4 is a turnover cylinder, a bearing is arranged on the valve body 3, and the bearing is in clearance fit with the valve rod 2.

The valve body 3 includes a first valve body 31, a second valve body 32, and a valve stem port 33, and the valve stem port 33 is preformed in the first valve body 31 and the second valve body 32. The valve rod ports 33 are provided in two in total and correspond to each other. The installation of the valve rod 2 of being convenient for cooperates the upset of control butterfly plate 1 jointly, and then realizes opening and closing of butterfly valve. The sealing assemblies 5 are arranged in two, the number of the valve rod openings 33 is equal to that of the sealing assemblies 5, and the sealing effect of the connecting positions of the valve rods 2 is optimized.

The single sealing assembly 5 is at least provided with two arc-shaped sheets 55 and two cross bodies 57, the arc-shaped sheets 55 and the cross bodies 57 are made of elastic materials such as rubber, and the rubber rings 51 and the spacing sheets 53 are also made of elastic materials such as rubber and can be elastically contracted and expanded to be matched.

When using this split type butterfly valve, assemble butterfly plate 1, valve rod 2, valve body 3, driving piece 4 and seal assembly 5, valve rod 2 penetrates valve rod mouth 33 department, is provided with mobile gas pocket on the second valve body 32, inject into gas to passageway 59 in from mobile gas pocket, check valve 510 guarantees in gas one-way flow to extrusion chamber 58, and shift to other places through second gas pocket 56, first gas pocket 54, seal assembly 5 surface and valve rod 2 closely laminate, play sealed effect. Can cooperate with the sealing washer that 1 edge of butterfly plate set up and the sealing washer that sets up on valve rod mouth 33 cooperate, realize multiple sealed effect, improve the leakproofness of butterfly valve.

It is to be understood that the embodiments disclosed herein are not limited to the particular constructions disclosed herein, but extend to equivalents thereof as would be understood by those skilled in the relevant art. It is also to be understood that the terminology used herein is for the purpose of describing particular embodiments only, and is not intended to be limiting.

Reference in the specification to "an embodiment" means that a particular feature, or characteristic described in connection with the embodiment is included in at least one embodiment of the application. Thus, the appearances of the phrase or "an embodiment" in various places throughout this specification are not necessarily all referring to the same embodiment.

Furthermore, the described features or characteristics may be combined in any other suitable manner in one or more embodiments. In the above description, certain specific details are provided, such as thicknesses, amounts, etc., to provide a thorough understanding of embodiments of the present application. One skilled in the relevant art will recognize, however, that the application can be practiced without one or more of the specific details, or with other structures, components, etc.

Claims (7)

1. A split butterfly valve is characterized by comprising

A butterfly plate;

the valve rod is inserted in the center of the butterfly plate;

the butterfly plate is overturned and sealed around the center of the valve body;

the driving piece is rotationally connected with the valve rod;

seal assembly, seal assembly embedding install in the valve body, seal assembly includes rubber ring, cavity, space piece, first gas pocket, arc piece, second gas pocket, the cross body, extrusion chamber, passageway and check valve, distribute in the cavity the rubber ring, the prefabrication is equipped with on the space piece first gas pocket, the prefabrication is equipped with on the arc piece the second gas pocket, the second gas pocket with first gas pocket link up, the support is installed in the arc piece the cross body, the cross body side sets up the extrusion chamber, the extrusion chamber with the passageway link up mutually, the embedding is installed on the passageway the check valve.

2. The split butterfly valve of claim 1, wherein the valve body comprises a first valve body, a second valve body, and a valve stem port, and the valve stem port is pre-fabricated in the first valve body and the second valve body.

3. The split butterfly valve of claim 2, wherein there are two of the valve stem ports and the two valve stem ports correspond to each other.

4. The split butterfly valve of claim 3, wherein there are two of the seal assemblies.

5. The split butterfly valve of claim 4, wherein a single seal assembly provides at least two arcuate segments and two intersections.

6. The split butterfly valve of claim 5, wherein the driving member is a tilt cylinder.

7. The split butterfly valve of claim 6, wherein a bearing is provided on the valve body, the bearing being in clearance fit with the valve stem.

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