CN216895885U

CN216895885U - Electric ball valve sealing structure

Info

Publication number: CN216895885U
Application number: CN202220555259.2U
Authority: CN
Inventors: 路金稳
Original assignee: Tianjin Lihua Valve Co ltd
Current assignee: Tianjin Lihua Valve Co ltd
Priority date: 2022-03-15
Filing date: 2022-03-15
Publication date: 2022-07-05
Anticipated expiration: 2032-03-15

Abstract

The utility model provides an electric ball valve sealing structure which comprises a tubular valve cover with two communicated ends, wherein one end of the outer wall of the valve cover is provided with an external thread matched with an internal thread on the inner wall of a valve body, an annular groove used for accommodating an O-shaped second sealing ring is formed between the root part of the external thread and a boss, and the outer side of the second sealing ring is abutted against the inner wall of the valve body to realize sealing. Above-mentioned seal structure need not to screw up the valve gap and can realize better sealed effect.

Description

Electric ball valve sealing structure

Technical Field

The utility model relates to the technical field of valves, in particular to a sealing structure of an electric ball valve.

Background

The ball valve cover and the valve body which are applied to the traditional water channel or other liquid pipelines are generally in threaded connection, in order to ensure the sealing performance of the valve, thread sealant is disassembled and then smeared after the threads are pressed to be qualified, or as shown in figure 1, a '0' -shaped sealing ring is sleeved on the root part of the external thread of the valve cover, the thread sealant needs to be disassembled and then smeared due to thread processing defects in the former, the latter needs to screw the valve cover, a boss of the valve cover and the end surface of the valve body are abutted against the '0' -shaped sealing ring to play a good sealing effect, the contact surface of the '0' -shaped sealing ring is easily damaged, the gasket arranged on the valve cover exerts too large pressure on the valve ball at the moment, and a larger torque is needed for driving the valve rod connected with the valve ball.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide the electric ball valve sealing structure with a simple structure aiming at the defects of the prior art, and a good sealing effect can be achieved without excessively screwing a valve cover.

In order to achieve the purpose, the utility model provides the following technical scheme: the utility model provides an electronic ball valve seal structure, includes the tubulose valve gap of both ends intercommunication, valve gap outer wall one end is provided with the external screw thread that agrees with the internal thread on the valve body inner wall, be provided with the step on the valve cover inner wall, install the packing ring with the valve body internal valve ball butt on the step, it is sealed through the first sealing washer of O shape between step and the packing ring, the ring channel that is used for holding the second sealing washer of O shape is offered to the root of external screw thread, the degree of depth of ring channel is less than the line footpath of second sealing washer, and its flute profile agrees with the second sealing washer, the outside of second sealing washer and the inner wall butt of valve body.

Specifically, still be provided with annular boss on the outer wall of valve gap, the boss is located the second sealing washer and keeps away from one side of external screw thread, the top surface of boss and the terminal surface butt of valve body.

An electronic ball valve seal structure that obtains through above-mentioned technical scheme, its beneficial effect is:

1. the second sealing ring is arranged in the annular groove, and the outer side surface of the second sealing ring is abutted with the inner wall of the valve body to realize sealing, so that the technical defect that the top surface of the sealing ring is abutted with the end surface of the valve body to realize sealing in the prior art is overcome, the valve cover does not need to be screwed, a good sealing effect can be achieved, the tightness of the valve rod is easy to adjust, the contact surface of the second sealing ring is not easy to scratch, and the service life of the second sealing ring is prolonged;

2. the boss is arranged on the outer wall of the valve cover, so that the second sealing ring can be prevented from being moved out of the annular groove in the connection process of the valve cover and the valve body, the screwing degree of the valve cover can be limited, and the operation difficulty is reduced.

Drawings

Fig. 1 is a schematic view of a conventional electric ball valve sealing structure.

Fig. 2 is a schematic view of the sealing structure of the electric ball valve according to the present invention.

Fig. 3 is an enlarged schematic view at a in the figure.

In the figure, 1, a valve body; 2. a gasket; 3. a valve ball; 4. a first seal ring; 5. a valve cover; 6. a second seal ring; 7. a boss; 8. an annular groove.

Detailed Description

The utility model is further described below with reference to the drawings and examples so that the advantages and features of the utility model can be more readily understood by those skilled in the art. It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict.

As shown in fig. 2-3, in order to achieve good sealing between the valve cover 5 and the valve body 1, the utility model provides a sealing structure of an electric ball valve, which comprises a tubular valve cover 5 with two communicated ends, wherein one end of the outer wall of the valve cover 5 is provided with an external thread matched with the internal thread on the inner wall of the valve body 1, an annular step is arranged on the inner wall of the valve cover 5, a gasket 2 which is abutted with a valve ball 3 in the valve body is arranged on the step, the step and the gasket 2 are sealed through an O-shaped first sealing ring 4, an annular groove 8 used for accommodating an O-shaped second sealing ring 6 is formed in the root part of the external thread, the depth of the annular groove 8 is smaller than the linear diameter of the second sealing ring 6, the groove shape of the valve body is matched with the second sealing ring 6, the height of the inner wall of the valve body 1 corresponding to the second sealing ring 6 is lower than the height of the inner thread of the second sealing ring 6, and the outer side of the second sealing ring 6 is abutted to the inner wall of the valve body 1.

Still be provided with annular boss 7 on the outer wall of valve gap 5, boss 7 is located the one side that external screw thread was kept away from to second sealing washer 6, and when valve gap 5 and valve body 1 threaded connection, the top surface of boss 7 and the terminal surface butt of valve body 1.

When the valve gap is connected with the valve body, when the top surface of boss and the terminal surface butt of valve body, indicate that the valve gap is rotatory to the position promptly, the dynamics of packing ring and valve ball butt is moderate this moment, rotatory in-process, the lateral surface of second sealing washer forms sealedly with the inner wall butt of valve body all the time, need not excessively tighten the valve gap and just can play good sealed effect.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are used only for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention. Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "disposed" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; the connection may be direct or indirect via an intermediate medium, and may be a communication between the two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art through specific situations.

The technical solutions described above only represent the preferred technical solutions of the present invention, and some possible modifications to some parts of the technical solutions by those skilled in the art all represent the principles of the present invention, and fall within the protection scope of the present invention.

Claims

1. The utility model provides an electric ball valve seal structure, its characterized in that, includes the tubulose valve gap of both ends intercommunication, valve gap outer wall one end is provided with the external screw thread that agrees with the internal thread on the valve body inner wall, be provided with the step on the valve gap inner wall, install the packing ring with the valve body internal valve ball butt on the step, it is sealed through the first sealing washer of O shape between step and the packing ring, the ring channel that is used for holding the second sealing washer of O shape is offered to the root of external screw thread, the degree of depth of ring channel is less than the line footpath of second sealing washer, and its flute profile agrees with the second sealing washer, the outside of second sealing washer and the inner wall butt of valve body.

2. The electric ball valve sealing structure according to claim 1, wherein an annular boss is arranged on the outer wall of the valve cover, the boss is positioned on one side of the second sealing ring away from the external thread, and the top surface of the boss is abutted against the end surface of the valve body.