阅读说明：本技术 一种浮球阀的密封连接结构 (Sealing connection structure of ball float valve ) 是由 杨召泽 于 2020-08-13 设计创作，主要内容包括：一种浮球阀的密封连接结构,包括设置在阀体部分的带有外螺纹的进水接头、旋接在进水接头上的螺母、套接在进水接头上且位于阀体部分的密封面与螺母间的密封垫,其特征在于沿密封垫的背向阀体部分的密封面的那面的边缘和穿孔边缘处分别设置有内环形凸缘和外环形凸缘,内环形凸缘和外环形凸缘间设置有若干条呈放射性分布的凸缘。本发明与已有技术相比,具有能防止阀体部分的密封面与密封垫间产生相对移动的优点。(The utility model provides a ball-cock assembly's sealing connection structure, including set up the water supply connector who has the external screw thread at valve body part, the nut of screwing on the water supply connector, cup joint on the water supply connector and lie in the sealed pad between the sealed face of valve body part and nut, its characterized in that along the sealed edge of the face that backs to the sealed face of valve body part and perforation edge be provided with interior annular flange and outer annular flange respectively, be provided with a plurality of flanges that are the radioactivity distribution between interior annular flange and outer annular flange. Compared with the prior art, the invention has the advantage of preventing the relative movement between the sealing surface of the valve body part and the sealing gasket.)

1. The utility model provides a ball-cock assembly's sealing connection structure, including set up the water supply connector who has the external screw thread at valve body part, connect the nut on the water supply connector soon, cup joint on the water supply connector and lie in the sealed pad between the sealed face of valve body part and nut, its characterized in that along the sealed edge of the face that backs to the sealed face of valve body part and perforation edge be provided with outer annular flange and interior annular flange respectively, be provided with a plurality of flanges between interior annular flange and outer annular flange.

2. A sealed coupling structure of a float valve according to claim 1, wherein a plurality of flanges are radially disposed.

3. A seal-connecting structure for a ball float valve according to claim 1 or 2, wherein the shape of the sealing surface of the valve body portion is non-circular, the shape of the packing corresponding to the sealing surface of the valve body portion is non-circular, and the periphery of the face of the non-circular packing facing the sealing surface of the valve body portion is provided with an annular positioning flange which abuts against the valve body portion outside the sealing surface.

4. A sealing-joint structure of a ball float valve according to claim 3, wherein the shape of the sealing surface is a shape consisting of an upper circle and a lower square.

5. A sealing-joint structure of a ball float valve according to claim 3, wherein short flanges having a height lower than that of the annular positioning flange are provided on the surface of the non-circular packing facing the sealing surface of the valve body portion.

6. A seal-connecting structure for a ball float valve according to claim 4, wherein short flanges having a height lower than that of the annular retainer flange are provided on the face of the non-circular packing facing the sealing face of the valve body portion.

7. A sealed joint construction of a float valve according to claim 5 or 6, characterized in that several short flanges are radially distributed.

Technical Field

The present invention relates to the art of valves.

Background

The existing ball cock assembly installed on the water tank supplying water to the steam generator, the connection structure of the ball cock assembly and the water tank comprises a water inlet joint with an external thread arranged on a valve body part, a nut screwed on the water inlet joint, a sealing gasket sleeved on the water inlet joint and positioned between a sealing surface of the valve body part and the nut, when the ball cock assembly is used, the water inlet joint sleeved with the sealing gasket penetrates through the side wall of the water tank from the inside of the water tank, the nut is screwed on the water inlet joint from the outside of the water tank, and the sealing surface of the valve body part is tightly leaned on the inner side wall of the water tank through the sealing. In the sealing connection structure, in the process of rotating the nut so as to apply pressure on the sealing surface of the valve body part through the nut, the valve body part is inevitably driven to rotate through the water inlet joint, even if an installation mode that a wrench is clamped on the valve body part to prevent the valve body part from rotating is adopted, small-amplitude rotation of the valve body part cannot be avoided, the force applied on the nut by the wrench can generate torsion, so that the sealing surface of the valve body part is not uniformly pressed on the sealing gasket, the force of pressing a certain edge part of the sealing surface on the sealing gasket is greatly increased, the force of pressing the other most part on the sealing gasket is reduced, meanwhile, the sealing gasket and the side wall of the water tank are tightly abutted against a clean side wall of the water tank (the surface of the inner side wall of the water tank is clean because the water tank is usually made of a stainless steel plate), when the resultant force of the two frictional forces is greater than the frictional force between the sealing surface of the valve body part and the sealing gasket, the sealing surface of the valve body part and the sealing gasket move relatively to each other, and the sealing gasket is torn and cracked to lose the sealing effect by increasing the force of pressing the edge part of the sealing surface on the sealing gasket.

The invention content is as follows:

the invention aims to provide a sealing connection structure of a floating ball valve, which can prevent relative movement between a sealing surface of a valve body part and a sealing gasket when being installed.

The invention is realized in such a way, comprising a water inlet joint with external threads arranged on a valve body part, a nut screwed on the water inlet joint, and a sealing gasket sleeved on the water inlet joint and positioned between a sealing surface of the valve body part and the nut, and is characterized in that an outer annular flange and an inner annular flange are respectively arranged along the edge of the surface of the sealing gasket, which is back to the sealing surface of the valve body part, and the edge of a through hole, and a plurality of flanges are arranged between the inner annular flange and the outer annular flange.

The plurality of flanges are distributed in a radial mode.

When in installation, because the inner annular flange, the outer annular flange and a plurality of radially distributed flanges are arranged, when the nut is rotated to apply pressure, the inner annular flange, the outer annular flange and a plurality of radially distributed flanges are pressed and deformed to form sealing, because the whole surface of the sealing gasket is not tightly pressed on the inner side wall of the water tank, only the inner annular flange, the outer annular flange and a plurality of radially distributed flanges are tightly pressed on the inner side wall of the water tank, the contact surface is small, the friction force is small, the friction force between the sealing surface of the valve body part and the sealing gasket is kept unchanged, so that the friction force between the sealing surface of the valve body part and the sealing gasket is larger than the friction force between the inner side wall of the water tank and the sealing gasket, even can drive valve body part through the connector of intaking when rotating the nut and rotate, sealed the pad also can rotate along with valve body part, has avoided the relative sealed pad of valve body part of prior art to rotate and has leaded to tearing the emergence of the sealed condition of filling up.

Here, in order to further ensure that the seal pad is synchronously rotated by the valve body portion when the valve body portion is rotated, the shape of the seal surface of the valve body portion is non-circular, the shape of the seal pad corresponding to the seal surface of the valve body portion is non-circular, and the periphery of the surface of the non-circular seal pad facing the seal surface of the valve body portion is provided with an annular positioning flange which abuts against the valve body portion outside the seal surface. Thus, when the valve body part rotates, the annular positioning flange and the non-circular sealing gasket can be driven to synchronously rotate together, so that the situation that the sealing gasket is torn due to the rotation of the valve body part relative to the sealing gasket is further avoided.

Compared with the prior art, the invention has the advantage of preventing the relative movement between the sealing surface of the valve body part and the sealing gasket.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a profile view of a sealing surface of a valve body portion;

FIG. 3 is a view of the side of the gasket facing away from the sealing surface of the valve body portion;

FIG. 4 is a view of the side of the gasket facing the sealing surface of the valve body portion;

fig. 5 is a view of embodiment 2 of the side of the gasket facing the sealing surface of the valve body portion.

The specific implementation mode is as follows:

the invention will now be described in further detail with reference to the accompanying drawings and examples:

as shown in fig. 1 and 3, the present invention includes a water inlet joint 3 with an external thread 2 disposed on a valve body portion 1 with a floating ball, a nut 4 screwed on the water inlet joint 3, and a silicone gasket 6 sleeved on the water inlet joint 3 and located between a sealing surface 5 of the valve body portion 1 and the nut 4, and is characterized in that an outer annular flange 7 and an inner annular flange 8 are respectively disposed along an edge of a sealing gasket 6 facing away from the sealing surface 5 of the valve body portion 1 and an edge of a through hole, and a plurality of radially distributed flanges 9 are disposed between the outer annular flange 7 and the inner annular flange 8. The outer annular flange 7, the inner annular flange 8 and the flange 9 are of the same height.

As shown in figure 1, when in use, the water inlet joint 3 sleeved with the sealing gasket 6 penetrates through the side wall a of the water tank from the inside of the water tank, the nut 4 is screwed on the water inlet joint 3 from the outside of the water tank, and the sealing surface 5 of the valve body part 1 abuts against the side wall a of the water tank through the sealing gasket 6 and is sealed through the sealing gasket 6.

As shown in fig. 2 and 4, the shape of the sealing surface 5 of the valve body portion 1 is non-circular (such as a shape constituted by an upper circular shape 5a and a lower square shape 5 b), the shape of the packing 6 corresponding to the sealing surface 5 of the valve body portion 1 is non-circular, and the periphery of the surface of the non-circular packing 6 facing the sealing surface of the valve body portion 1 is provided with an annular positioning flange 10, and as shown in fig. 1, the annular positioning flange 10 abuts on the valve body portion 1 outside the sealing surface 5.

As shown in fig. 5, short flanges 11 having a height lower than that of the annular positioning flange 10 are provided on the surface of the non-circular packing 6 facing the sealing surface of the valve body portion 1. The provision of the short flange 11 increases the friction between the non-circular gasket 6 and the sealing surface of the body portion 1, thereby further preventing the tearing of the gasket caused by rotation of the body portion relative to the gasket. Several short flanges 11 are radially distributed along the centre of the perforation of the gasket 6.