CN218207848U - Butterfly valve sealing structure - Google Patents
Butterfly valve sealing structure Download PDFInfo
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- CN218207848U CN218207848U CN202222324190.5U CN202222324190U CN218207848U CN 218207848 U CN218207848 U CN 218207848U CN 202222324190 U CN202222324190 U CN 202222324190U CN 218207848 U CN218207848 U CN 218207848U
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- sealing ring
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- seat
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Abstract
The utility model discloses a butterfly valve sealing structure, which comprises a valve body and a valve plate, wherein the inner periphery of the valve body is provided with a sealing ring groove, a soft sealing ring seat is correspondingly arranged in the sealing ring groove, a ring seat positioning structure is arranged between the sealing ring groove and the soft sealing ring seat, the sealing ring groove is a dovetail ring groove with wide outer periphery and narrow inner periphery, the soft sealing ring seat is a dovetail ring tenon correspondingly arranged in the dovetail ring groove, and the tenon joint between the dovetail ring tenon and the dovetail ring groove is also used as a ring seat positioning structure; the inner ring of the soft sealing ring seat is provided with a sealing ring surface, and the sealing ring surface is positioned outside the sealing ring groove and is in sealing fit with the peripheral surface of the valve plate; adopt the dovetail joint mode between forked tail annular and the forked tail ring tenon right soft seal ring seat is fixed a position, during the installation, can directly will have elastic soft seal ring seat directly fill in the forked tail annular can, no longer need other fixed knot construct, compare with other soft seal seats among the prior art, have simple structure, simple to operate's advantage.
Description
Technical Field
The utility model relates to a butterfly valve technical field especially relates to a butterfly valve seal structure.
Background
The butterfly valve is also called a flap valve and is a regulating valve with simple structure, the butterfly valve comprises a valve body and a valve plate arranged in the valve body, and the valve plate rotates around a valve rod to realize opening and closing, thereby being used for on-off control of pipeline media. Wherein, the rotation of valve plate is driven through the rotation of valve rod to the double eccentric butterfly valve at the during operation, makes the outer peripheral face of valve plate extrude the seal receptacle gradually, plays sealed effect, because frequent friction between valve plate and seal receptacle, the sealed face wearing and tearing of seal receptacle, sealing performance descends, has seriously influenced the life of valve body. Therefore, the sealing element of the existing butterfly valve in the market is generally made of rubber, the butterfly valve is small in applicable medium range due to the characteristics of the rubber in the using process, the rubber of the valve plate is extremely easy to wear in the rotating process, and the rubber sealing seat needs to be fixed by matching with a screw, a pressing ring and the like when being installed at present, so that the assembling and disassembling process is complex, and time and labor are wasted.
Disclosure of Invention
The utility model aims to solve the technical problem that a simple structure, easy dismounting, labour saving and time saving's butterfly valve seal structure is provided.
In order to solve the technical problem, the technical scheme of the utility model is that: the butterfly valve sealing structure comprises a valve body and a valve plate arranged in the valve body, wherein a sealing ring groove is formed in the inner periphery of the valve body, a soft sealing ring seat is correspondingly installed in the sealing ring groove, a ring seat positioning structure is arranged between the sealing ring groove and the soft sealing ring seat, the sealing ring groove is a dovetail ring groove with the wide outer periphery and the narrow inner periphery, the soft sealing ring seat is a dovetail ring tenon correspondingly installed in the dovetail ring groove, and the dovetail joint between the dovetail ring tenon and the dovetail ring groove is also used as the ring seat positioning structure; the inner ring of the soft sealing ring seat is provided with a sealing ring surface, and the sealing ring surface is positioned outside the sealing ring groove and in sealing fit with the peripheral surface of the valve plate.
As a preferred technical scheme, the sealing ring surface is an arc ring surface arranged at the inner ring of the soft sealing ring seat.
As a preferred technical scheme, the sealing ring surface is an arc ring surface arranged on the inner side of the inner ring of the soft sealing ring seat, the arc ring surface is in sealing fit with the outer peripheral surface of the valve plate, and the outer side of the inner ring of the soft sealing ring seat is provided with a resistance-reducing outward-expanding inclined surface used for reducing the switching resistance of the valve plate.
As a preferred technical scheme, the soft sealing ring seat is a rubber ring seat or a polytetrafluoroethylene ring seat.
By adopting the technical scheme, the butterfly valve sealing structure comprises a valve body and a valve plate arranged in the valve body, wherein a sealing ring groove is formed in the inner periphery of the valve body, a soft sealing ring seat is correspondingly installed in the sealing ring groove, a ring seat positioning structure is arranged between the sealing ring groove and the soft sealing ring seat, the sealing ring groove is a dovetail ring groove with wide periphery and narrow inner periphery, the soft sealing ring seat is a dovetail ring tenon correspondingly installed in the dovetail ring groove, and the dovetail joint between the dovetail ring tenon and the dovetail ring groove is also used as the ring seat positioning structure; the inner ring of the soft sealing ring seat is provided with a sealing ring surface, and the sealing ring surface is positioned outside the sealing ring groove and is in sealing fit with the peripheral surface of the valve plate;
the beneficial effects of the utility model are that:
1. the soft sealing ring seat is positioned by adopting a dovetail joint mode between the dovetail ring groove and the dovetail ring tenon, and the elastic soft sealing ring seat can be directly plugged into the dovetail ring groove during installation without other fixing structures;
2. because the matching surface between the dovetail ring groove and the dovetail ring tenon is in tenon matching, the dovetail ring has the advantage of self-sealing of the joint surface in a compressed state, and the sealing effect is better;
3. the soft sealing ring seat is arranged on the valve body, so that the soft sealing ring seat has the advantages of uniform fluid scouring and long service life, and also has the advantages of reducing the thickness of the valve plate and reducing the flow loss of the valve, and particularly has obvious effect on small-caliber valves;
4. the cross section of the sealing surface is in a form of matching of an arc-shaped annular surface and the resistance-reducing outward-expanding inclined surface, so that the valve has the advantages of low switching resistance and good sealing effect;
5. the device has the advantages of simple structure, convenient assembly and disassembly, and good applicability, and can be applied to various butterfly valves.
Drawings
The drawings are only intended to illustrate and explain the present invention and do not limit the scope of the invention.
Fig. 1 is a schematic structural diagram of an embodiment of the present invention;
FIG. 2 is an enlarged schematic view at A in FIG. 1;
in the figure: 1-a valve body; 2-a valve plate; 3-a valve stem; 4-sealing ring grooves; 5-soft sealing ring seat; 6-circular arc ring surface; 7-resistance-reducing outward-expanding inclined plane.
Detailed Description
The invention is further explained below with reference to the drawings and examples. In the following detailed description, certain exemplary embodiments of the present invention have been described by way of illustration only. Needless to say, a person skilled in the art will recognize that the described embodiments can be modified in various different ways without departing from the spirit and scope of the invention. Accordingly, the drawings and description are illustrative in nature and not intended to limit the scope of the claims.
As shown in fig. 1 and 2, the butterfly valve sealing structure includes a valve body 1 and a valve plate 2 disposed in the valve body 1, and the valve plate 2 is opened and closed by a valve rod 3. The valve plate 2 is made of stainless steel or cast iron body surfacing stainless steel.
The interior week of valve body 1 is equipped with sealed annular 4, the corresponding soft seal ring seat 5 of installing in sealed annular 4, soft seal ring seat 5 is rubber ring seat or polytetrafluoroethylene ring seat.
A ring seat positioning structure is arranged between the sealing ring groove 4 and the soft sealing ring seat 5, the sealing ring groove 4 is a dovetail ring groove with wide periphery and narrow inner periphery, the soft sealing ring seat 5 is a dovetail ring tenon correspondingly installed in the dovetail ring groove, and the dovetail joint between the dovetail ring tenon and the dovetail ring groove is also used as the ring seat positioning structure; the inner ring of the soft sealing ring seat 5 is provided with a sealing ring surface, and the sealing ring surface is positioned outside the sealing ring groove 4 and in sealing fit with the peripheral surface of the valve plate 2. The outer circumference width of sealing ring groove is greater than interior circumference width, just the interior circumference of sealing ring groove is located in the outer circumference, consequently show the forked tail annular on the valve body.
The sealing ring surface is an arc ring surface 6 arranged on the inner side of the inner ring of the soft sealing ring seat 5, the arc ring surface 6 is in sealing fit with the outer peripheral surface of the valve plate 2, and the arc ring surface 6 is correspondingly matched with the outer peripheral surface of the valve plate 2, so that the sealing ring has a good sealing effect. And in order to further reduce the resistance when the valve plate 2 is opened and closed, the outer side of the inner ring of the soft sealing ring seat 5 is provided with a resistance-reducing outer expanding inclined surface 7 which extends outwards through the inclined surface, the resistance-reducing outer expanding inclined surface 7 is relative to the arc-shaped ring surface 6 which extends obliquely to one side away from the valve plate, so that the contact distance between the resistance-reducing outer expanding inclined surface and the valve plate 2 can be quickly reduced, and the resistance when the valve plate 2 is opened and closed is reduced. Certainly, the anti-drag outward-expanding inclined plane is not required to be arranged, namely the sealing ring surface is a circular arc ring surface arranged on the inner ring of the soft sealing ring seat, and the sealing effect is better at the moment.
The utility model has the advantages that:
1. the soft sealing ring seat 5 is positioned by adopting a dovetail joint mode between the dovetail ring groove and the dovetail ring tenon, and the elastic soft sealing ring seat 5 can be directly plugged into the dovetail ring groove during installation without other fixing structures;
2. because the matching surface between the dovetail ring groove and the dovetail ring tenon is in tenon matching, the dovetail ring has the advantage of self-sealing of the joint surface in a compressed state, and the sealing effect is better;
3. the soft sealing ring seat 5 is arranged on the valve body 1, so that the soft sealing ring seat 5 has the advantages of uniform fluid scouring and long service life, and also has the advantages of reducing the thickness of the valve plate 2 and reducing the flow loss of the valve, and particularly has obvious effect on small-caliber valves;
4. the cross section of the sealing surface is in a form of matching the arc-shaped ring surface 6 with the resistance-reducing outward-expanding inclined surface 7, so that the sealing device has the advantages of low switching resistance and good sealing effect;
5. the device has the advantages of simple structure, convenient assembly and disassembly, and good applicability, and can be applied to various butterfly valves.
The basic principles, main features and advantages of the present invention have been shown and described above. It will be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that the foregoing embodiments and descriptions are provided only to illustrate the principles of the present invention without departing from the spirit and scope of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (4)
1. Butterfly valve seal structure, including the valve body and arrange the valve plate in the valve body, its characterized in that: the inner periphery of the valve body is provided with a sealing ring groove, a soft sealing ring seat is correspondingly installed in the sealing ring groove, a ring seat positioning structure is arranged between the sealing ring groove and the soft sealing ring seat, the sealing ring groove is a dovetail ring groove with a wide outer periphery and a narrow inner periphery, the soft sealing ring seat is a dovetail ring tenon correspondingly installed in the dovetail ring groove, and the dovetail joint between the dovetail ring tenon and the dovetail ring groove is also used as the ring seat positioning structure; the inner ring of the soft sealing ring seat is provided with a sealing ring surface, and the sealing ring surface is positioned outside the sealing ring groove and in sealing fit with the peripheral surface of the valve plate.
2. The butterfly valve sealing structure of claim 1, wherein: the sealing ring surface is an arc ring surface arranged at the inner ring of the soft sealing ring seat.
3. The butterfly valve sealing structure of claim 1, wherein: the sealing ring surface is an arc ring surface arranged on the inner side of the inner ring of the soft sealing ring seat, the arc ring surface is in sealing fit with the peripheral surface of the valve plate, and the outer side of the inner ring of the soft sealing ring seat is provided with a resistance-reducing outer expanding inclined surface used for reducing the switching resistance of the valve plate.
4. A butterfly valve sealing structure according to any one of claims 1 to 3, wherein: the soft sealing ring seat is a rubber ring seat or a polytetrafluoroethylene ring seat.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222324190.5U CN218207848U (en) | 2022-09-02 | 2022-09-02 | Butterfly valve sealing structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222324190.5U CN218207848U (en) | 2022-09-02 | 2022-09-02 | Butterfly valve sealing structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218207848U true CN218207848U (en) | 2023-01-03 |
Family
ID=84628913
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222324190.5U Active CN218207848U (en) | 2022-09-02 | 2022-09-02 | Butterfly valve sealing structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218207848U (en) |
-
2022
- 2022-09-02 CN CN202222324190.5U patent/CN218207848U/en active Active
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