CN210890199U

CN210890199U - Sealing ball valve

Info

Publication number: CN210890199U
Application number: CN201921634830.4U
Authority: CN
Inventors: 黄汉敏; 温耀信; 王文化; 谭敬罕; 吴敏珊; 周志伟; 冯毅强; 陈堪夏; 郑炳灿; 乔玉凤
Original assignee: Zhongshan Kingdom Flow Control Co ltd
Current assignee: Zhongshan Kingdom Flow Control Co ltd
Priority date: 2019-09-27
Filing date: 2019-09-27
Publication date: 2020-06-30
Anticipated expiration: 2029-09-27

Abstract

The utility model discloses a sealed ball valve, include: a valve body; the valve cover is arranged on one side of the valve body; the valve ball is arranged in the valve body; the disk seat, set up between valve ball and valve gap, be equipped with graphite seal circle and clamping ring between disk seat and the valve gap, the clamping ring sets up in the below of graphite seal circle, be equipped with the dish spring between clamping ring and the valve gap, the flaring of dish spring sets up down, the upper end of dish spring is supported in the clamping ring, the lower extreme supports in the valve gap, it is equipped with bearing portion to correspond the dish spring in the valve gap, the lower extreme that corresponds the dish spring on the bearing portion is equipped with spacing bellying, the downside that corresponds the dish spring on the bearing portion is equipped with the slope spigot surface, be equipped with the mediation passageway on the bearing portion, the one end of mediation passageway is linked together with the upside of dish. Through the guide effect of slope spigot surface for the unable card of powdery material is stifled in the downside of dish spring, and can in time dredge the powdery material who gets into dish spring upside through mediation passageway, can prevent that the card from appearing in the both sides of dish spring stifled so that the unable normal work's of dish spring phenomenon.

Description

Sealing ball valve

Technical Field

The utility model relates to an industrial valve field, in particular to sealed ball valve.

Background

The ball valve, the opening and closing piece (ball) is driven by the valve rod and rotates around the axis of the ball valve. Ball valves are appeared in the 50 th of the 20 th century, and along with rapid development of science and technology, continuous improvement of production process and product structure, the ball valves are rapidly developed into a main valve class in short decades. The ball valve is mainly used for cutting off, distributing and changing the flow direction of a medium in a pipeline, and can be closed tightly only by rotating 90 degrees and a small rotating moment. And has the characteristics of wear resistance, good sealing performance, light switch, long service life and the like.

The existing ball valve is generally sealed through the matching among the graphite sealing ring, the pressing ring and the disc spring, after long-term use, the phenomenon of blocking easily appears on the two sides of the disc spring, and particularly when powdery materials are transported, the powdery materials are blocked on the two sides of the disc spring easily, so that the disc spring cannot work normally.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to solve one of the technical problem that exists among the prior art at least, provide a can prevent the sealed ball valve of the both sides of the stifled dish spring of powdery material card.

According to the utility model discloses a first aspect provides a sealed ball valve, include:

a valve body;

the valve cover is arranged on one side of the valve body;

the valve ball is arranged in the valve body;

the disk seat, set up in the valve ball with between the valve gap, the disk seat with be equipped with graphite sealing washer and clamping ring between the valve gap, the clamping ring set up in graphite sealing washer's below, the clamping ring with be equipped with the dish spring between the valve gap, the flaring of dish spring sets up down, the upper end of dish spring support in the clamping ring, the lower extreme support in the valve gap, correspond in the valve gap the dish spring is equipped with bearing portion, correspond on the bearing portion the lower extreme of dish spring is equipped with spacing bellying, correspond on the bearing portion the downside of dish spring is equipped with the slope spigot surface, be equipped with the mediation passageway on the bearing portion, the one end of mediation passageway with the upside of dish spring is linked together, and the other end accesss to in the valve gap.

The sealing ball valve at least has the following beneficial effects: through the guide effect of slope spigot surface for powdery material can't block up in the downside of dish spring, and through the vibrations that mediation passageway cooperation sealing ball valve produced in the course of the work can in time dredge the entering the powdery material of the upside of dish spring can prevent to use the back for a long time the card appears in the both sides of dish spring stifled so that the phenomenon of the unable normal work of dish spring.

According to the utility model discloses the first aspect a sealed ball valve, the valve gap pass through the bolt and the nut connect in the valve body, its simple structure connects firmly, and is convenient for install and dismantle.

According to the utility model discloses an aspect a sealed ball valve, be equipped with the valve gap packing ring between valve gap and the valve body, be favorable to improving leakproofness between valve gap and the valve body.

According to the utility model discloses an aspect a sealed ball valve, the side of valve body corresponds the position of valve ball is equipped with the installation through-hole, it is equipped with the plug screw to insert on the installation through-hole. Before installation, the sealing performance of the sealing ball valve can be detected through the installation through hole, and after installation and operation, the pressure in the valve body can be released through the installation through hole.

Drawings

The present invention will be further explained with reference to the drawings and examples.

Fig. 1 is a schematic cross-sectional view of an embodiment of the present invention;

FIG. 2 is an enlarged view of a portion of FIG. 1 at I;

FIG. 3 is an enlarged, fragmentary view at II in FIG. 1;

fig. 4 is a partially enlarged schematic view of fig. 2 at iii.

Detailed Description

This section will describe in detail the embodiments of the present invention, preferred embodiments of the present invention are shown in the attached drawings, which are used to supplement the description of the text part of the specification with figures, so that one can intuitively and vividly understand each technical feature and the whole technical solution of the present invention, but they cannot be understood as the limitation of the protection scope of the present invention.

In the description of the present invention, it should be understood that if an orientation description is referred to, for example, the directions or positional relationships indicated by the upper, lower, front, rear, left, right, etc. are the directions or positional relationships shown on the drawings, it is only for convenience of description and simplification of description, but it is not intended to indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

In the description of the present invention, if there are several, greater than, less than, exceeding, above, below, within, etc., the terms, wherein several means are one or more, and several means are two or more, and greater than, less than, exceeding, etc. are understood as not including the number, and above, below, within, etc. are understood as including the number.

In the description of the present invention, if the terms first, second, etc. appear, they are only used for distinguishing technical features, but they are not to be interpreted as indicating or implying relative importance or implying that the number of the indicated technical features is indicated or that the precedence of the indicated technical features is implied.

In the description of the present invention, unless there is an explicit limitation, the words such as setting, installation, connection, etc. should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above words in combination with the specific contents of the technical solution.

Referring to fig. 1, 2 and 4, a sealed ball valve includes:

a valve body 1;

the valve cover 2 is arranged on one side of the valve body 1;

the valve ball 3 is arranged in the valve body 1;

the valve seat 4 is arranged between the valve ball 3 and the valve cover 2, a graphite sealing ring 5 and a pressing ring 6 are arranged between the valve seat 4 and the valve cover 2, the pressing ring 6 is arranged below the graphite sealing ring 5, a disc spring 7 is arranged between the pressing ring 6 and the valve cover 2, an expanding opening of the disc spring 7 is arranged downwards, the upper end of the disc spring 7 is abutted to the pressing ring 6, the lower end of the disc spring 7 is abutted to the valve cover 2, a bearing part 8 is arranged in the valve cover 2 corresponding to the disc spring 7, a limiting protruding part 8a is arranged on the bearing part 8 corresponding to the lower end of the disc spring 7, when the disc spring 7 is limited, a gap is formed between the lower end of the disc spring 7 and the inner wall of the valve cover 2, an inclined guide surface 8b is arranged on the bearing part 8 corresponding to the lower side of the disc spring 7, a dredging channel 8c is arranged on the bearing part 8. It should be noted that the supporting portion 8 is annular, and the dredging channel 8c is provided in plurality and annularly distributed on the supporting portion 8.

Through the guide effect of slope spigot surface 8b for powdery material can't block up in the downside of dish spring 7, and through the vibrations that mediation passageway 8c cooperation seal ball valve produced in the course of the work, can in time dredge the powdery material who gets into the upside of dish spring 7, can prevent to use the phenomenon that the card stifled so that dish spring 7 can't normally work appears in the both sides of dish spring 7 after for a long time.

Referring to fig. 1 and 2, in some embodiments, the bonnet 2 is connected to the valve body 1 by a bolt 9 and a nut 10, which has a simple structure, a stable connection, and easy installation and disassembly.

Referring to fig. 2, in some embodiments, a bonnet gasket 11 is disposed between the bonnet 2 and the valve body 1, which is beneficial for improving the sealing performance between the bonnet 2 and the valve body 1.

Referring to fig. 1 and 3, in some embodiments, a side surface of the valve body 1 is provided with a mounting through hole (not shown) corresponding to the position of the valve ball 3, and a plug screw 12 is inserted into the mounting through hole. Before the installation, can pass through the leakproofness of installation through-hole detection sealed ball valve to can release the pressure in the valve body 1 through the installation through-hole after the installation operation. When the sealing performance of the sealing ball valve is detected through the mounting through hole, the screw plug 12 is detached, a pipe body is externally connected to the water from the mounting through hole, whether bubbles exist is observed, and if bubbles exist, the problem of leakage exists when the sealing ball valve is closed; after the sealed ball valve is installed in a pipeline and operated for a period of time, pressure may be stored in the valve body 1, and the plug screw 12 may be removed and discharged through the installation through-hole.

The above description specifically describes the preferred embodiments of the present invention, but of course, the present invention can also adopt different forms from the above embodiments, and equivalent changes or corresponding modifications made by those skilled in the art without departing from the spirit of the present invention shall fall within the protection scope of the present invention.

Claims

1. A sealed ball valve, comprising:

a valve body (1);

the valve cover (2) is arranged on one side of the valve body (1);

the valve ball (3) is arranged in the valve body (1);

a valve seat (4) arranged between the valve ball (3) and the valve cover (2), a graphite sealing ring (5) and a pressing ring (6) are arranged between the valve seat (4) and the valve cover (2), the pressing ring (6) is arranged below the graphite sealing ring (5), a disc spring (7) is arranged between the pressing ring (6) and the valve cover (2), an expanding opening of the disc spring (7) is arranged downwards, the upper end of the disc spring (7) is supported against the pressing ring (6), the lower end of the disc spring is supported against the valve cover (2), a bearing part (8) is arranged in the valve cover (2) corresponding to the disc spring (7), a limiting protruding part (8a) is arranged at the lower end of the bearing part (8) corresponding to the disc spring (7), an inclined guide surface (8b) is arranged at the lower side of the bearing part (8) corresponding to the disc spring (7), and a dredging channel (8c) is arranged on the bearing part (8), one end of the dredging channel (8c) is communicated with the upper side of the disc spring (7), and the other end of the dredging channel is communicated with the valve cover (2).

2. A sealed ball valve according to claim 1, characterized in that the bonnet (2) is connected to the valve body (1) by means of a bolt (9) and a nut (10).

3. A sealed ball valve according to claim 1, characterized in that a valve cover gasket (11) is provided between the valve cover (2) and the valve body (1).

4. A sealed ball valve according to claim 1, characterized in that the side of the valve body (1) is provided with a mounting through hole corresponding to the position of the valve ball (3), and a plug screw (12) is inserted into the mounting through hole.