CN218377738U - Sealing assembly for butterfly valve - Google Patents

Abstract

The utility model relates to the technical field of butterfly valve sealing, and specifically discloses a sealing assembly for a butterfly valve, comprising: a butterfly valve main body, a valve seat is arranged in the butterfly valve main body, a filter plate is arranged at one end of the valve seat, a butterfly plate is arranged in the butterfly valve main body, There is a placement groove on the side of the butterfly plate, and an elastic airbag is arranged in the placement groove; beneficial effect: the utility model proposes a sealing assembly for a butterfly valve. When in use, the elastic airbag is installed in the placement groove, and then the wear-resistant sheet is placed It is fixedly connected to the surface of the elastic airbag. When working, the elastic airbag set in the butterfly plate is in contact with the wear-resistant plate and the sealing ring to realize the sealing of the butterfly valve. When it needs to be opened, the rotating shaft drives the butterfly plate to rotate and open. The setting of the airbag can avoid the friction between the sealing ring and the side of the butterfly plate when the disc plate is rotated, which will cause the sealing ring to wear and tear, and there will be a gap between the sealing ring and the butterfly plate, resulting in weakened sealing, resulting in Leakage occurs.

Description

A sealing assembly for a butterfly valve

technical field

The utility model relates to the technical field of butterfly valve sealing, in particular to a sealing assembly for butterfly valves.

Background technique

Butterfly valve, also known as flap valve, is a regulating valve with simple structure, which can be used for switch control of low-pressure pipeline medium. of a valve.

In the prior art, the sealing ring is mainly used to abut against the inner wall of the valve seat, so as to close and seal the butterfly valve.

However, when the disc plate is rotated, the sealing ring will rub against the inner wall of the butterfly plate, which will cause the sealing ring to wear, and a gap will be generated between the sealing ring and the butterfly plate, resulting in weakened sealing, resulting in liquid leakage Case.

Utility model content

The purpose of this utility model is to provide a sealing assembly for a butterfly valve to solve the problems raised in the background technology above.

In order to achieve the above purpose, the utility model provides the following technical solutions: a sealing assembly for a butterfly valve, the sealing assembly for a butterfly valve includes: a butterfly valve main body, a control device is provided on the surface of the butterfly valve main body, and a valve seat is provided on the inner wall of the butterfly valve main body , the surface of the valve seat is provided with a sealing ring, one end of the valve seat is provided with a support plate, and one end of the support plate is provided with a filter plate;

The butterfly plate has a placement groove on the side of the butterfly plate, an elastic air bag is arranged in the placement groove, a fixing plate is arranged on the surface of the butterfly plate, and a rotating shaft is inserted into the fixing plate.

Preferably, the filter plate is in the shape of a circular plate, and the side of the filter plate is fixedly connected to one end of the support plate by bolts.

Preferably, the valve seat is in the shape of an annular plate, and the outer ring surface of the valve seat is fixedly connected to the inner wall of the main body of the butterfly valve.

Preferably, the inner ring surface of the elastic airbag is fixedly connected to the bottom of the placement groove, and the outer ring surface of the elastic airbag is provided with a wear-resistant sheet.

Preferably, the fixing plate is in the shape of a square plate, and there are two groups of fixing plates, and the two groups of fixing plates are symmetrically distributed with respect to the center point of the butterfly plate.

Preferably, the sealing ring is in the shape of an annular plate, and the outer ring surface of the sealing ring is fixedly connected to the inner ring surface of the valve seat.

Compared with the prior art, the beneficial effects of the utility model are:

The utility model proposes a sealing assembly for a butterfly valve. When in use, the elastic airbag is installed in the placement groove, and then the wear-resistant sheet is fixedly connected to the surface of the elastic airbag, and a sealing ring is arranged on the surface of the valve seat. When working, the elastic airbag installed in the butterfly plate is in contact with the wear-resistant plate and the sealing ring to realize the sealing of the main body of the butterfly valve. When it needs to be opened, the rotating shaft drives the butterfly plate to rotate and open. When the disc is rotated, the sealing ring will rub against the side of the butterfly plate, which will lead to wear of the sealing ring, and a gap will be formed between the sealing ring and the butterfly plate, resulting in weakened sealing and liquid leakage.

Description of drawings

Fig. 1 is the structural representation of the utility model;

Fig. 2 is a partial sectional view of the structure of the utility model;

Fig. 3 is a structural schematic diagram of a valve seat of the utility model;

Fig. 4 is a structural schematic diagram of a butterfly plate of the utility model.

In the figure: 1. Butterfly valve main body; 2. Control device; 3. Valve seat; 4. Seal ring; 5. Support plate; 6. Filter plate; 7. Butterfly plate; Fixed plate; 11, rotating shaft; 12, wear-resistant sheet; 13, bolt.

Detailed ways

In order to clearly and completely describe the purpose, technical solution, and advantages of the present invention, the embodiments of the present invention will be further described in detail below in conjunction with the accompanying drawings. It should be understood that the specific embodiments described here are part of the embodiments of the present invention, rather than all embodiments, and are only used to explain the embodiments of the present invention, and are not intended to limit the embodiments of the present invention. All other embodiments obtained under the premise of creative work all belong to the protection scope of the present invention.

Embodiment one:

Please refer to Fig. 1-Fig. 4, the utility model provides a technical solution: a sealing assembly for a butterfly valve, the sealing assembly for a butterfly valve includes: a butterfly valve main body 1, a control device 2 is arranged on the surface of the butterfly valve main body 1, The inner wall of the butterfly valve main body 1 is provided with a valve seat 3, the surface of the valve seat 3 is provided with a sealing ring 4, one end of the valve seat 3 is provided with a support plate 5, and one end of the support plate 5 is provided with a filter plate 6; the butterfly plate 7, the side of the butterfly plate 7 is provided with Placement groove 8, elastic air bag 9 is arranged in placement groove 8, fixed plate 10 is arranged on the surface of butterfly plate 7, and rotating shaft 11 is inserted in fixed plate 10;

During use, the elastic airbag 9 is installed in the placement groove 8, and then the wear-resistant sheet 12 is fixedly connected to the surface of the elastic airbag 9, and the surface of the valve seat 3 is provided with a sealing ring 4. The elastic airbag 9 is in contact with the wear-resistant plate 12 and the sealing ring 4 to realize the sealing of the main body 1 of the butterfly valve.

Embodiment two

On the basis of Embodiment 1, a valve seat 3 is provided. The valve seat 3 has an annular plate-shaped structure. The outer ring surface of the valve seat 3 is fixedly connected to the inner wall of the butterfly valve main body 1. The side is fixedly connected to one end of the support plate 5 by bolts 13;

When in use, the filter plate 6 provided at one end of the valve seat 3 can block the particulate impurities in the water flow, so as to prevent the butterfly plate 7 from being affected by the particulate impurities when opening and closing, thereby reducing the sealing performance.

Embodiment three

On the basis of Embodiment 2, an elastic airbag 9 is provided, the inner ring surface of the elastic airbag 9 is fixedly connected to the bottom of the placement groove 8, the outer ring surface of the elastic airbag 9 is provided with a wear-resistant sheet 12, and the fixing plate 10 is in a square plate-like structure. The fixing plate 10 is provided with two groups, the two groups of fixing plates 10 are distributed symmetrically about the center point of the butterfly plate 7, the sealing ring 4 is in the shape of an annular plate, and the outer ring surface of the sealing ring 4 is fixedly connected to the inner ring surface of the valve seat 3;

When in use, the elastic airbag 9 can always be in contact with the wear-resistant sheet 12 and the sealing ring 4, and the wear-resistant sheet 12 can improve the wear resistance of the butterfly plate 7 and the sealing ring 4, and improve the sealing life of the butterfly valve main body 1.

In actual use, the elastic airbag 9 is installed in the placement groove 8, and then the wear-resistant sheet 12 is fixedly connected to the surface of the elastic airbag 9, and a sealing ring 4 is arranged on the surface of the valve seat 3. The elastic air bag 9 is set against the wear-resistant plate 12 and contacts the sealing ring 4 to realize the sealing of the main body 1 of the butterfly valve. The filter plate 6 provided at one end of the valve seat 3 can block the particles and impurities in the water flow and avoid the butterfly plate 7. When opening and closing, it is affected by particles and impurities, which leads to a decrease in sealing performance. The overall design can avoid that when the butterfly plate 7 is rotated, the sealing ring 4 will rub against the side of the butterfly plate 7, which will cause the sealing ring 4 to break. Wear and tear will create a gap between the sealing ring 4 and the butterfly plate 7, resulting in weakened sealing performance and liquid leakage.

Although the embodiments of the present invention have been shown and described, those skilled in the art can understand that various changes and modifications can be made to these embodiments without departing from the principle and spirit of the present invention , replacements and modifications, the scope of the present utility model is defined by the appended claims and their equivalents.

Claims (6)

1. A seal assembly for a butterfly valve, comprising: the seal assembly for a butterfly valve includes: the butterfly valve comprises a butterfly valve body (1), wherein a control device (2) is arranged on the surface of the butterfly valve body (1), a valve seat (3) is arranged on the inner wall of the butterfly valve body (1), a sealing ring (4) is arranged on the surface of the valve seat (3), a supporting plate (5) is arranged at one end of the valve seat (3), and a filtering plate (6) is arranged at one end of the supporting plate (5);

the butterfly plate (7), the standing groove (8) has been seted up to butterfly plate (7) side, is provided with elastic air bag (9) in standing groove (8), and butterfly plate (7) surface is provided with fixed plate (10), has inserted pivot (11) in fixed plate (10).

2. A seal assembly for a butterfly valve in accordance with claim 1, wherein: the filter plate (6) is of a circular plate-shaped structure, and the side face of the filter plate (6) is fixedly connected to one end of the support plate (5) through a bolt (13).

3. A seal assembly for a butterfly valve in accordance with claim 2, wherein: the valve seat (3) is of an annular plate-shaped structure, and the outer annular surface of the valve seat (3) is fixedly connected to the inner wall of the butterfly valve main body (1).

4. A seal assembly for a butterfly valve in accordance with claim 3, wherein: the inner ring surface of the elastic air bag (9) is fixedly connected to the bottom of the placing groove (8), and the outer ring surface of the elastic air bag (9) is provided with a wear-resistant sheet (12).

5. A seal assembly for a butterfly valve according to claim 4, wherein: the fixing plate (10) is of a square plate-shaped structure, two groups of fixing plates (10) are arranged, and the two groups of fixing plates (10) are symmetrically distributed about the center point of the butterfly plate (7).

6. A seal assembly for a butterfly valve according to claim 5, wherein: the sealing ring (4) is of an annular plate-shaped structure, and the outer ring surface of the sealing ring (4) is fixedly connected to the inner ring surface of the valve seat (3).

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