CN213575691U

CN213575691U - Floating ball valve

Info

Publication number: CN213575691U
Application number: CN202022741448.2U
Authority: CN
Inventors: 王章章; 章成选; 孙永玲
Original assignee: KCM VALVE CO Ltd
Current assignee: KCM VALVE CO Ltd
Priority date: 2020-11-24
Filing date: 2020-11-24
Publication date: 2021-06-29
Anticipated expiration: 2030-11-24

Abstract

A floating ball valve. The method is characterized in that: the valve body comprises a left valve body and a right valve body, the lower end of the right valve body is provided with a lower supporting plate extending into the left valve body, and the middle part of the lower supporting plate is provided with a first chute with an opening at the right end; the center of the bottom of the ball body is provided with a first cylindrical boss matched with the first sliding groove, the bottom of the ball body is supported on the lower supporting plate, and the first cylindrical boss of the ball body is arranged in the first sliding groove. Its advantage lies in, can hold the spheroid through the bottom suspension fagging, simultaneously through the cooperation of first spout and first cylinder boss, ensures that the spheroid is rotatory and float with and along controlling of first spout, realizes the design of floating of large-scale ball valve, effectively avoids appearing the problem that the spheroid sinks, guarantees sealing performance.

Description

Floating ball valve

Technical Field

The utility model relates to a ball valve, concretely relates to ball valve floats.

Background

Ball valve refers to a valve in which the opening and closing element is a sphere and is driven by a valve rod to rotate around the axis of the ball valve. It can be used for regulation and control of fluid. The ball valve has two kinds of ball valves of floating and fixed ball valves, and wherein, the spheroid of ball valve that floats is unsteady, and under the effect of medium pressure, the spheroid can produce certain displacement and compress tightly on the sealed face of exit end, guarantees that the exit end is sealed.

Conventional ball valve that floats includes the valve body, the disk seat, the spheroid, the valve rod, the disk seat setting is supported by the valve body in the valve body, the spheroid is placed in the valve body back and is supported by the disk seat with the disk seat cooperation, unsettled setting in spheroid bottom, the elongated groove is seted up at the spheroid top, the valve rod stretches into the elongated groove of spheroid upper end, can drive spheroid synchronous revolution through the valve rod, simultaneously under the ball valve closed condition, the spheroid is not influenced by the valve rod, can produce certain displacement by the medium pressure effect and compress tightly on the sealed face of disk seat of exit end, realize reliable sealing.

The conventional floating ball valve is a small and medium-sized ball valve generally, and cannot be applied to a large ball valve because the ball body is supported by a valve seat in an embracing mode, a certain gap is reserved between the ball body and the bottom of the valve body, but the larger the ball body is, the larger the gravity generated by the ball body is, the larger the generated downforce is, and along with the opening and closing rotation action of the ball body, the valve seat sealing surface is easy to wear and deform, the ball body is easy to fall, so that the sealing effect between the ball body and the valve seat is influenced, and the leakage problem is easy to.

SUMMERY OF THE UTILITY MODEL

In order to overcome the not enough of background art, the utility model provides a ball valve floats.

The utility model discloses the technical scheme who adopts: a floating ball valve comprises a valve body, wherein a ball body is arranged in the valve body and is connected with a valve rod, and a valve seat is arranged between the ball body and the valve body; the valve body comprises a left valve body and a right valve body, the lower end of the right valve body is provided with a lower supporting plate extending into the left valve body, and the middle part of the lower supporting plate is provided with a first chute with an opening at the right end; the bottom center of the ball body is provided with a first cylindrical boss matched with the first sliding groove, the bottom of the ball body is supported on the lower supporting plate, and the first cylindrical boss is arranged in the first sliding groove.

And a plane structure in contact fit with the lower supporting plate is formed at the lower end of the ball body.

The upper end of the right valve body is provided with an upper supporting plate extending into the left valve body, and the middle part of the upper supporting plate is provided with a second sliding chute with an opening at the right end; the center of the top of the ball body is provided with a second cylindrical boss matched with the second sliding groove, and the second cylindrical boss is arranged in the second sliding groove.

The upper end of the ball body is provided with a plane structure which is in contact fit with the upper supporting plate.

The utility model has the advantages that: scheme more than adopting can hold the spheroid through the bottom suspension fagging, simultaneously through the cooperation of first spout and first cylinder boss, ensures that the spheroid is rotatory and float about along first spout, realizes the design of floating of large-scale ball valve, effectively avoids appearing the problem that the spheroid sinks, guarantees sealing performance.

Drawings

Fig. 1 is a schematic structural view of a floating ball valve according to an embodiment of the present invention.

Fig. 2 is a longitudinal section of the right valve body of the embodiment of the present invention.

Fig. 3 is a transverse section of the right valve body of the embodiment of the present invention.

Detailed Description

The embodiments of the present invention will be further explained with reference to the accompanying drawings:

as shown in the figure, the floating ball valve comprises a valve body 1, wherein a ball body 2 is arranged in the valve body 1, the ball body 2 is connected with a valve rod 3, a valve seat 4 is arranged between the ball body 2 and the valve body 1, and the valve seat 4 and the ball body 2 can be in sealing fit.

The valve body 1 comprises a left valve body 11 and a right valve body 12, the left valve body 11 is connected with the right valve body 12 through a flange, a lower supporting plate 121 extending into the left valve body 11 is arranged at the lower end of the right valve body 12, and a first sliding groove 122 with an opening at the right end is arranged in the middle of the lower supporting plate 121; the center of the bottom of the sphere 2 is provided with a first cylindrical boss 21 matched with the first sliding groove 122, the bottom of the sphere 2 is supported on the lower support plate 121, and the first cylindrical boss 21 is arranged in the first sliding groove 122.

After the spheroid 2 packed into in the valve body 1, the lower supporting plate of right valve body 12 can hold and support spheroid 2, simultaneously through the cooperation of first spout 122 with first cylinder boss 21, ensures that spheroid 2 can rotate and float about can following first spout 122 to realize the design of floating of large-scale ball valve, effectively avoid appearing the sunken problem of spheroid 2, guarantee sealing performance.

Wherein, the lower end of the sphere 2 is formed with a plane structure in contact fit with the lower support plate 121, so that the sphere 2 acts more stably.

Further, an upper supporting plate 123 extending into the left valve body 11 is arranged at the upper end of the right valve body 12, and a second sliding groove 124 with an opening at the right end is arranged in the middle of the upper supporting plate 123; the second cylindrical boss 22 matched with the second sliding groove 124 is arranged at the center of the top of the ball body 2, the second cylindrical boss 22 is arranged in the second sliding groove 124, and a plane structure matched with the upper supporting plate 123 in a contact mode is formed at the upper end of the ball body 2.

After the ball body 2 is arranged in the valve body 1, the upper end and the lower end of the ball body 2 are correspondingly supported and limited, the structure action is more stable and reliable, and the sealing is ensured.

In the description of the present invention, it should be noted that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplification of the description, but do not 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. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art. In addition, in the description of the present invention, "a plurality" means two or more unless otherwise specified.

The skilled person should understand that: although the present invention has been described in accordance with the above embodiments, the inventive concept is not limited to this embodiment, and any modification of the inventive concept will be included in the scope of the patent claims.

Claims

1. A floating ball valve comprises a valve body (1), wherein a ball body (2) is arranged in the valve body (1), the ball body (2) is connected with a valve rod (3), and a valve seat (4) is arranged between the ball body (2) and the valve body (1); the method is characterized in that: the valve body (1) comprises a left valve body (11) and a right valve body (12), a lower supporting plate (121) extending into the left valve body (11) is arranged at the lower end of the right valve body (12), and a first sliding groove (122) with an opening at the right end is formed in the middle of the lower supporting plate (121); the ball body (2) is characterized in that a first cylindrical boss (21) matched with the first sliding groove (122) is arranged in the center of the bottom of the ball body (2), the bottom of the ball body (2) is supported on the lower supporting plate (121), and the first cylindrical boss (21) is arranged in the first sliding groove (122).

2. The floating ball valve of claim 1, wherein: the lower end of the sphere (2) is provided with a plane structure which is in contact fit with the lower support plate (121).

3. The floating ball valve of claim 1, wherein: an upper supporting plate (123) extending into the left valve body (11) is arranged at the upper end of the right valve body (12), and a second sliding groove (124) with an opening at the right end is arranged in the middle of the upper supporting plate (123); the center of the top of the sphere (2) is provided with a second cylindrical boss (22) matched with the second sliding groove (124), and the second cylindrical boss (22) is arranged in the second sliding groove (124).

4. The floating ball valve of claim 3, wherein: the upper end of the sphere (2) is provided with a plane structure which is in contact fit with the upper supporting plate (123).