CN219432474U - Butterfly valve with elastic sealing structure - Google Patents

Abstract

The utility model relates to the technical field of butterfly valves, in particular to a butterfly valve with an elastic sealing structure, which comprises a valve body, a valve rod, a valve seat and a valve plate, wherein the valve plate is arranged in a channel of the valve seat; according to the utility model, the valve plate can be sealed in the valve seat channel through the elastic compensation sealing element, so that the elastic compensation sealing element can still seal the valve plate in the valve seat channel after the peripheral edge sealing surface of the valve plate is prevented from being sealed and lowered, and sealing leakage between the valve plate and the valve seat is prevented.

Description

Butterfly valve with elastic sealing structure

Technical Field

The utility model relates to the technical field of butterfly valves, in particular to a butterfly valve with an elastic sealing structure.

Background

The butterfly valve is also called as flap valve, and is a simple-structure regulating valve, the butterfly valve capable of being used for controlling the opening and closing of low-pressure pipeline medium is characterized in that a closing member is a disc, the butterfly valve rotates around a valve shaft to achieve opening and closing, the butterfly valve is composed of a valve body, a valve seat, a disc, a valve rod and a transmission device, the disc is also called as a valve plate, the sealing between a sealing surface of the valve plate and the valve seat is formed by pressing the valve plate to the valve seat by the torque of the transmission device, under low pressure, good sealing can be achieved, the valve plate rotates around the axis of the valve rod, the rotation angle is between 0 and 90 degrees, and when the valve rotates to 90 degrees, the valve is in a full-open state.

However, when the valve plate is in a fully-opened state, the medium forms positive flushing on the peripheral edge sealing surface of the valve plate, and after the peripheral edge sealing surface of the valve plate is flushed for many times, the sealing performance of the peripheral edge sealing surface of the valve plate can be influenced, so that when the valve plate is in a closed state, the sealing between the valve plate and the valve seat starts to leak, and the leakage problem of the existing butterfly valve cannot be avoided. In view of this, we propose butterfly valves with elastic sealing structures.

Disclosure of Invention

In order to remedy the above-mentioned shortcomings, the present utility model provides a butterfly valve having an elastic sealing structure.

The technical scheme of the utility model is as follows:

the butterfly valve with the elastic sealing structure comprises a valve body, a valve rod, a valve seat and a valve plate, wherein the valve plate is arranged in a channel of the valve seat, and an elastic compensation sealing element is arranged in the valve seat;

the elastic compensation sealing piece is composed of two movable semicircular rings and two movable rubber ring blocks, wherein the two movable semicircular rings are respectively installed on two sides of the valve plate, one side of each movable semicircular ring is provided with an elastic component I for pushing the movable semicircular ring to be close to the valve plate, the two movable rubber ring blocks are respectively installed on the upper end and the lower end of the valve plate, and one side of each movable rubber ring block is provided with an elastic component II for pushing the movable rubber ring block to be close to the valve plate.

Preferably, the two movable semicircular rings and the two movable rubber ring blocks encircle to form a complete circle.

Preferably, the valve body and the valve seat are both cylindrical, and the valve seat is installed in the valve body.

Preferably, the valve rod is mounted on the central line axis of the valve plate, and the upper end and the lower end of the valve rod respectively penetrate through the valve seat to be mounted on the valve body.

Preferably, the elastic component I is composed of a plurality of spring pieces, one sides of the spring pieces are arranged on the movable semicircular rings, the other sides of the spring pieces are provided with fixed semicircular rings, and the fixed semicircular rings are arranged on the inner wall of the channel of the valve seat.

Preferably, the elastic component is composed of a spring, the valve rod penetrates through the inner ring of the spring, one end of the spring is mounted on the movable rubber ring block, and the other end of the spring is mounted on the inner wall of the valve body channel.

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

according to the utility model, the valve plate can be sealed in the valve seat channel through the elastic compensation sealing element, so that the elastic compensation sealing element can still seal the valve plate in the valve seat channel after the peripheral edge sealing surface of the valve plate is prevented from being sealed and lowered, and sealing leakage between the valve plate and the valve seat is prevented.

Drawings

FIG. 1 is a schematic diagram of the overall structure of the present utility model;

FIG. 2 is a schematic view, partially in section, of the present utility model;

FIG. 3 is a schematic view of the elastic compensation seal of the present utility model.

In the figure:

1. a valve body;

2. a valve stem;

3. an elastic compensating seal; 31. fixing the semicircular ring; 32. a spring piece; 33. a movable semicircle ring; 34. a movable rubber ring block; 35. a spring;

4. a valve seat;

5. a valve plate.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model.

Referring to fig. 1-3, the present utility model is described in detail by the following embodiments:

the butterfly valve with the elastic sealing structure comprises a valve body 1, wherein the valve body 1 is cylindrical, a valve seat 4 is arranged in the valve body 1, the valve seat 4 is also cylindrical, the outer wall of the valve seat 4 is fixedly and hermetically arranged on the inner wall of a channel of the valve body 1, the upper end of the valve body 1 and the upper end and the lower end of the valve seat 4 are respectively provided with a circular perforation corresponding to each other, the lower end of the valve body 1 is provided with a circular groove communicated with the circular perforation at the lower end of the valve seat 4, and the valve rod 2 is installed in the three circular perforations and the circular groove in a sealing and rotating manner.

In this embodiment, the valve rod 2 is provided with the valve plate 5, the valve plate 5 is disc-shaped, the valve plate 5 is installed in the channel of the valve seat 4, the valve rod 2 is fixedly installed on the middle line of the valve plate 5, the valve seat 4 is internally provided with the elastic compensation sealing piece 3, the elastic compensation sealing piece 3 is composed of two movable semicircular rings 33 and two movable rubber ring blocks 34, the two movable semicircular rings 33 are respectively installed on two sides of the valve plate 5, the movable semicircular rings 33 are in sliding sealing connection left and right along the inner wall of the valve seat 4, one side of the movable semicircular rings 33 is provided with an elastic component I for pushing the movable semicircular rings 33 to be close to the sealing valve plate 5, the two movable rubber ring blocks 34 are respectively installed at the upper end and the lower end of the valve plate 5, the movable rubber ring blocks 34 are installed on the valve rod 2 in a sliding manner in a sealing manner, and the movable rubber ring blocks 34 and the circular perforated inner wall are in a sliding manner, and one side of the movable rubber ring blocks 34 is respectively provided with an elastic component II for pushing the movable rubber ring blocks 34 to be close to the sealing valve plate 5.

In this embodiment, the upper and lower ends of the movable semicircular ring 33 are respectively in sealing contact with the peripheries of the two movable rubber ring blocks 34, the two movable semicircular rings 33 and the two movable rubber ring blocks 34 encircle to form a complete circle, the first elastic component is composed of a plurality of spring pieces 32, one sides of the plurality of spring pieces 32 are fixedly installed on the movable semicircular ring 33, the other sides of the plurality of spring pieces 32 are fixedly installed with fixed semicircular rings 31, the fixed semicircular rings 31 are fixedly installed on the inner wall of the channel of the valve seat 4, the elastic component is composed of springs 35, the valve rod 2 penetrates through the inner ring of the springs 35, one end of each spring 35 is fixedly installed on the movable rubber ring block 34, and the other end of each spring 35 is fixedly installed on the inner wall of the channel of the valve body 1.

In this embodiment, when the valve plate 5 is in a closed state, the inner channels of the valve plate 5 and the valve seat 4 are perpendicular to each other, the edge sealing surface of the valve plate 5 and the inner wall of the channel of the valve seat 4 are mutually attached and sealed, meanwhile, the movable semicircular ring 33 on the front side of the valve plate 5 is pressed by a plurality of spring pieces 32 to contact the edge of the left end of the front side of the valve plate 5, the front side of the valve plate 5 and the movable semicircular ring 33 are mutually attached, and the movable semicircular ring 33 and the valve seat 4 are in sealing sliding connection for sealing the edge of the left end of the front side of the valve plate 5, if the sealing surface of the peripheral edge of the sealing valve plate 5 is damaged, the medium in the valve seat 4 can only pass through the damaged position of the right end and the upper end and the lower end of the valve plate 5, and in the same way, the movable semicircular ring 33 on the rear side of the valve plate 5 seals the edge of the right end of the valve plate 5, so that the medium cannot pass through the right end of the rear side of the valve plate 5, then the movable semicircular ring 34 on the upper end and the lower end of the valve plate 5 are pressed by springs 35 to be in sealing contact with the upper end and lower end of the valve plate 5, so that the medium cannot pass through the upper end and lower end of the valve plate 5, and the lower end of the movable semicircular ring 33 respectively seal the upper end and lower end of the movable semicircular ring 34 and the two movable semicircular ring 34 are in sealing contact with the edge of the left end of the movable semicircular ring 34, and the periphery of the sealing ring 34, and the sealing ring 34 can still can not pass through the upper and lower end of the movable semicircular ring 4, and the sealing surface of the sealing surface 4 can be completely and sealing the sealing surface and sealing surface 4.

The foregoing has shown and described the basic principles, principal features and advantages of the utility model. It will be understood by those skilled in the art that the present utility model is not limited to the above-described embodiments, and that the above-described embodiments and descriptions are only preferred embodiments of the present utility model, and are not intended to limit the utility model, and that various changes and modifications may be made therein without departing from the spirit and scope of the utility model as claimed. The scope of the utility model is defined by the appended claims and equivalents thereof.

Claims (6)

1. Butterfly valve with elastic sealing structure, including valve body (1), valve rod (2), disk seat (4) and valve plate (5), valve plate (5) install in the passageway of disk seat (4), its characterized in that: an elastic compensation sealing element (3) is arranged in the valve seat (4);

the elastic compensation sealing piece (3) is composed of two movable semicircular rings (33) and two movable rubber ring blocks (34), wherein the two movable semicircular rings (33) are respectively installed on two sides of the valve plate (5), one side of each movable semicircular ring (33) is provided with an elastic component I for pushing the movable semicircular ring (33) to be close to the valve plate (5), the two movable rubber ring blocks (34) are respectively installed on the upper end and the lower end of the valve plate (5), and one side of each movable rubber ring block (34) is provided with an elastic component II for pushing the movable rubber ring block (34) to be close to the valve plate (5).

2. The butterfly valve with an elastomeric seal structure of claim 1, wherein: two movable semicircular rings (33) and two movable rubber ring blocks (34) encircle to form a complete circle.

3. The butterfly valve with an elastomeric seal structure of claim 1, wherein: the valve body (1) and the valve seat (4) are both cylindrical, and the valve seat (4) is installed in the valve body (1).

4. The butterfly valve with an elastomeric seal structure of claim 1, wherein: the valve rod (2) is arranged on the central line axis of the valve plate (5), and the upper end and the lower end of the valve rod (2) respectively penetrate through the valve seat (4) to be arranged on the valve body (1).

5. The butterfly valve with an elastomeric seal structure of claim 1, wherein: the elastic component I comprises a plurality of spring pieces (32), one sides of the spring pieces (32) are arranged on the movable semicircular rings (33), the other sides of the spring pieces (32) are provided with the fixed semicircular rings (31), and the fixed semicircular rings (31) are arranged on the inner wall of the channel of the valve seat (4).

6. The butterfly valve with an elastomeric seal structure of claim 5, wherein: the second elastic component is composed of a spring (35), the valve rod (2) penetrates through the inner ring of the spring (35), one end of the spring (35) is installed on the movable rubber ring block (34), and the other end of the spring (35) is installed on the inner wall of the channel of the valve body (1).