CN217207856U

CN217207856U - Novel ball valve disk seat

Info

Publication number: CN217207856U
Application number: CN202221267984.6U
Authority: CN
Inventors: 陈乾才
Original assignee: Individual
Current assignee: Individual
Priority date: 2022-05-25
Filing date: 2022-05-25
Publication date: 2022-08-16
Anticipated expiration: 2032-05-25

Abstract

The utility model relates to the field of ball valves, in particular to a novel ball valve seat, which comprises a side valve body, wherein a ball body is rotatably connected in the side valve body, a cavity is arranged in the side valve body, a spring is arranged in the cavity, one end of the spring is connected with the inner wall of the cavity, the other end of the spring is connected with a support ring, the spring is always kept in a compression elastic state, one end of the support ring, which is far away from the spring, is connected with a tetrafluoro sealing ring, one side of the tetrafluoro sealing ring is matched with the excircle of the ball body, the other side of the tetrafluoro sealing ring is directly contacted with the side valve body, one side of the tetrafluoro sealing ring is provided with an O-shaped ring, in the process of rotating the side valve body or the ball body, the tetrafluoro sealing ring is directly contacted with the side valve body, so that the tetrafluoro sealing ring is always matched with the excircle of the ball body, and the switching effect is realized, the sealing width and the sealing surface area are increased, the sealing quality is enhanced, and the service life is prolonged.

Description

Novel ball valve disk seat

Technical Field

The utility model relates to a ball valve technical field especially relates to a novel ball valve disk seat.

Background

The ball valve is mainly used for cutting off, distributing and changing the flow direction of a medium in a pipeline, can be closed tightly only by rotating 90 degrees and a small rotating moment, and is most suitable for being used as a switch and a cut-off valve. The large-caliber ball valve is in a fixed ball form, namely, a ball body is fixed, and the valve seat moves to play a sealing role. In recent years, large-diameter ball valves are widely applied in the field of heat supply, but the problems of blocking or sealing failure easily occur in use.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the problem of easy occurrence of the defects of blocking or sealing failure existing in the prior art and providing a novel ball valve seat.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

the utility model provides a novel ball valve disk seat, includes the side valve body, it is connected with the spheroid to rotate in the side valve body, be provided with the cavity in the side valve body, be provided with the spring in the cavity, the one end of spring with the interior wall connection of cavity, the other end of spring is connected with the lock ring, the spring remains the compression elasticity state all the time, the lock ring is kept away from the one end of spring is connected with the tetrafluoro sealing ring, one side of tetrafluoro sealing ring with spheroidal excircle is identical, the opposite side of tetrafluoro sealing ring with side valve body direct contact, one side of tetrafluoro sealing ring is provided with O type circle.

Preferably, the cross section of the tetrafluoro sealing ring is trapezoidal, the tetrafluoro sealing ring is directly contacted with the side valve body, an inclined plane is arranged on one side of the tetrafluoro sealing ring close to the ball body, and the inclined plane is always matched with the outer circle of the ball body.

Preferably, the inclined surface is convex towards the ball.

Preferably, one side of the tetrafluoro sealing ring is provided with a groove, and the O-shaped ring is placed at the groove.

Preferably, the end of the side valve body is provided with a valve body, the valve body is provided with a trunnion, the ball body is rotatably connected with a valve rod, and the ball body is connected with the valve rod.

Preferably, a gear box is arranged on the side valve body, a hand wheel is connected to the input end of the gear box, and the output end of the gear box is connected with the valve rod.

The utility model has the advantages that:

the utility model discloses the spheroidal in-process rotates, the tetrafluoro sealing ring is direct with the contact of side valve body, and it is under the spring action of spring for the tetrafluoro sealing ring is identical all the time with spheroidal excircle, realizes the effect of switching, has increased sealed width and sealed face area, and sealed face width is traditional 3.5-5 times, has strengthened sealing quality and life.

Drawings

Fig. 1 is a schematic structural view of a novel ball valve seat provided by the present invention;

fig. 2 is a partial enlarged view of a portion C of the novel ball valve seat shown in fig. 1.

In the figure: the valve comprises a side valve body 1, a side valve body 2, a ball body 3, a trunnion 4, a tetrafluoro seal ring 5, an O-shaped ring 6, a support ring 7, a spring 8, a valve rod 9, a gear box 10 and a hand wheel 11.

Detailed Description

In order to facilitate understanding of the present invention, the present invention will be described more fully hereinafter with reference to the accompanying drawings. The preferred embodiments of the present invention are shown in the drawings. The invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only and do not denote a single embodiment.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

Referring to fig. 1-2, a novel ball valve seat comprises a side valve body 1, a ball body 3 is connected in the side valve body 1 in a rotating mode, a cavity is arranged in the side valve body 1, a spring 8 is arranged in the cavity, one end of the spring 8 is connected with the inner wall of the cavity, the other end of the spring 8 is connected with a support ring 7, the spring 8 is always kept in a compression elastic state, one end, away from the spring 8, of the support ring 7 is connected with a tetrafluoro seal ring 5, one side of the tetrafluoro seal ring 5 is matched with the outer circle of the ball body 3, the other side of the tetrafluoro seal ring 5 is in direct contact with the side valve body 1, an O-shaped ring 6 is arranged on one side of the tetrafluoro seal ring 5, specifically, a groove is formed in one side of the tetrafluoro seal ring 5, and the O-shaped ring 6 is arranged at the groove.

In the process of rotating the ball body 3, under the elastic force action of the spring 8, the tetrafluoro sealing ring 5 is always matched with the excircle of the ball body 3, the opening and closing effect is realized, the sealing width and the sealing surface area are increased, the sealing surface width is 3.5-5 times of that of the traditional sealing ring, the sealing quality is enhanced, and the service life is prolonged.

In a preferred embodiment, the cross section of the tetrafluoro sealing ring 5 is trapezoidal, the tetrafluoro sealing ring 5 is directly contacted with a side valve body, and a slope is arranged on one side of the tetrafluoro sealing ring 5 close to the ball body 3, and the slope is always consistent with the outer circle of the ball body 3. In the embodiment, the sealing width and the sealing surface area are increased through the inclined surface, so that the sealing quality and the service life are enhanced.

On the basis of the previous embodiment, the inclined surface is convex towards the ball 3. In this embodiment, the bulge can deform under the action of the elastic force of the spring 8, so that the bulge is abutted against the outer wall of the ball body 3, the sealing width and the sealing surface area are increased through the bulge, and the sealing quality and the service life are enhanced.

It should be noted that a valve body 2 is arranged at the end of the side valve body 1, a trunnion 4 is arranged on the valve body 2, a valve rod 9 is rotatably connected to the trunnion 4, and the ball 3 is arranged on the valve rod 9. The side valve body 1 is provided with a gear box 10, the input end of the gear box 10 is connected with a hand wheel 11, and the output end of the gear box 10 is connected with the valve rod 9.

The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims

1. The utility model provides a novel ball valve disk seat, its characterized in that, includes side valve body (1), side valve body (1) internal rotation is connected with spheroid (3), be provided with the cavity in side valve body (1), be provided with spring (8) in the cavity, the one end of spring (8) with the interior wall connection of cavity, the other end of spring (8) is connected with lock ring (7), spring (8) remain compression elasticity state throughout, lock ring (7) are kept away from the one end of spring (8) is connected with tetrafluoro sealing ring (5), one side of tetrafluoro sealing ring (5) with the excircle of spheroid (3) is identical, the opposite side of tetrafluoro sealing ring (5) with side valve body (1) direct contact, one side of tetrafluoro sealing ring (5) is provided with O type circle (6).

2. A novel ball valve seat according to claim 1, characterized in that the cross section of the PTFE sealing ring (5) is trapezoid, the PTFE sealing ring (5) is directly contacted with the side valve body (1), and one side of the PTFE sealing ring close to the ball body (3) is provided with an inclined surface which is always matched with the outer circle of the ball body (3).

3. A new ball valve seat according to claim 2, characterized in that said inclined surface is convex close to said ball (3).

4. A new ball valve seat according to claim 1, characterized in that one side of said tetrafluoro sealing ring (5) is provided with a groove where said O-ring (6) is placed.

5. A novel ball valve seat according to claim 1, characterized in that the end of the side valve body (1) is provided with a valve body (2), the valve body (2) is provided with a trunnion (4), the ball body (3) is rotatably connected with a valve rod (9), and the ball body (3) is connected with the valve rod (9).

6. A novel ball valve seat according to claim 5, characterized in that a gear box (10) is arranged on the side valve body (1), the input end of the gear box (10) is connected with a hand wheel (11), and the output end of the gear box (10) is connected with the valve rod (9).