CN216843221U

CN216843221U - Symmetrical valve

Info

Publication number: CN216843221U
Application number: CN202220563593.2U
Authority: CN
Inventors: 卓拓成; 李彬杰; 郑叶繁
Original assignee: Zhejiang Ousite Pump Valve Co ltd
Current assignee: Wenzhou Ousite Valve Co ltd
Priority date: 2022-03-15
Filing date: 2022-03-15
Publication date: 2022-06-28
Anticipated expiration: 2032-03-15

Abstract

The application discloses a symmetrical valve, which comprises a valve body; a valve ball; the output end of the pneumatic actuating mechanism is connected with the valve ball through a valve rod and is used for driving the valve ball to rotate; the pair of sealing valve seats are arranged in the valve body and are positioned on two sides of the valve ball; the valve body consists of a pair of symmetrical shells, and the shells are mutually fastened and connected through a fastening piece; the external pipeline is connected with the valve body through a flange; the expansion sealing piece is arranged between the corresponding end faces of the valve body and the external pipeline, the expansion sealing piece is extruded and expanded when the flange is connected with the external pipeline, in daily use, by adopting the technical scheme, the valve body is formed by using a pair of shells which are symmetrical to each other, the corresponding parts are simplified, the left part and the right part are completely symmetrical, the interchangeability is strong, the manufacturing and maintenance cost is low, the overhaul by workers is convenient, the sealing performance between the valve body and the external pipeline is enhanced by the arrangement of the expansion sealing piece, and the leakage event can be effectively avoided.

Description

Symmetrical valve

Technical Field

The invention relates to a symmetrical valve.

Background

The valves are used for opening and closing pipelines, controlling flow direction, adjusting and controlling parameters of conveying media, and can be divided into shut-off valves, check valves, regulating valves and the like according to functions of the valves, wherein the valves are control parts in a fluid conveying system and have functions of stopping, adjusting, guiding, preventing backflow, stabilizing pressure, shunting or overflowing and relieving pressure, and the valves used for the fluid control system range from the simplest stop valves to various valves used in extremely complex automatic control systems, and the variety and the specification of the valves are quite various. There is a valve on the market, as shown in fig. 1, including a valve body, a lower valve rod, a valve ball, a seal seat, etc., wherein, in order to facilitate the installation of the valve ball and the seal seat, the valve body is divided into a left part and a right part and connected with each other by screws, but the left part and the right part of the valve body are asymmetric, and in order to deal with the situation that the valve body needs to be maintained due to the damage, because the left part and the right part of the valve body are not universal, the left part and the right part of the valve body must be prepared separately, the manufacturing cost and the logistics cost are increased greatly, which leads to the corresponding increase of the use cost, and thus there is a need for improvement.

Disclosure of Invention

The present invention is directed to solving one of the technical problems of the prior art.

The application provides a symmetry type valve, includes:

the valve body is internally provided with a flow passage;

a valve ball mounted within the valve body;

the output end of the pneumatic actuating mechanism is connected with the valve ball through a valve rod and is used for driving the valve ball to rotate;

the pair of sealing valve seats are arranged in the valve body and are positioned on two sides of the valve ball;

the valve body is composed of a pair of shells which are symmetrical to each other, and the pair of shells are mutually fastened and connected through a fastening piece.

Further comprising:

the external pipeline is connected with the valve body through a flange;

an expansion seal mounted between the valve body and a corresponding end surface of the outer conduit;

wherein the expansion seal is compressed to expand when the flange is connected to the external pipe.

The expansion seal comprises:

the sealing ring grooves are oppositely arranged on the end face of the valve body opposite to the external pipeline;

the sealing outer ring is sleeved in a sealing ring groove on the valve body;

the sealing inner ring is sleeved in a sealing ring groove on the external pipeline;

wherein, the inner circumference of the sealing outer ring and the outer circumference of the sealing inner ring are both obliquely arranged and mutually abutted.

Further comprising:

and a pair of extrusion steel rings respectively embedded on the peripheral side and the inner side of each sealing ring groove.

Further comprising:

and the flexible graphite sealing ring is arranged between the sealing valve seat and the valve body.

The invention has the following main beneficial effects:

1. the valve body is formed by the pair of symmetrical shells, so that the corresponding part types are simplified, the parts of the left part and the right part are completely symmetrical, the interchangeability is strong, the manufacturing and maintenance cost is low, and the maintenance is convenient for workers to overhaul;

2. through the arrangement of the sealing ring groove, the sealing inner ring, the sealing outer ring and the extrusion steel ring, the end face of the shell is closer to the end face of the external pipeline, the abutting between the outer peripheral side of the sealing inner ring and the inner peripheral side of the sealing outer ring is tighter, and meanwhile, the sealing between the inner peripheral side of the sealing inner ring and the inner peripheral side of the sealing ring groove and the sealing between the outer peripheral side of the sealing outer ring and the outer peripheral side of the sealing ring groove are tighter, so that the fluid leakage can be effectively prevented;

3. through the arrangement of the flexible graphite sealing ring, the resistance is smaller and more flexible when the valve ball rotates.

Drawings

FIG. 1 is a schematic diagram of a prior art valve structure;

fig. 2 is a schematic structural diagram of a symmetrical valve according to an embodiment of the present disclosure.

Reference numerals

1-valve body, 2-valve ball, 3-pneumatic actuator, 4-sealing valve seat, 5-external pipeline, 6-sealing ring groove, 7-sealing outer ring, 8-sealing inner ring, 9-extrusion steel ring and 10-flexible graphite sealing ring.

Detailed Description

The technical solutions in the embodiments of the present application will be described clearly below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some, but not all, embodiments of the present application. All other embodiments that can be derived by one of ordinary skill in the art from the embodiments given herein are intended to be within the scope of the present disclosure.

The terms first, second and the like in the description and in the claims of the present application are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It will be appreciated that the data so used may be interchanged under appropriate circumstances such that embodiments of the application may be practiced in sequences other than those illustrated or described herein, and that the terms "first," "second," and the like are generally used herein in a generic sense and do not limit the number of terms, e.g., the first term can be one or more than one. In addition, "and/or" in the specification and claims means at least one of connected objects, a character "/" generally means that a preceding and succeeding related objects are in an "or" relationship.

The server provided by the embodiment of the present application is described in detail below with reference to the accompanying drawings through specific embodiments and application scenarios thereof.

As shown in fig. 1, the present embodiment provides a symmetric valve, which includes a valve body 1 having a flow passage therein; a valve ball 2 installed in the valve body 1; the output end of the pneumatic actuating mechanism 3 is connected with the valve ball 2 through a valve rod and is used for driving the valve ball 2 to rotate; and the pair of sealing valve seats 4 are arranged in the valve body 1 and are positioned at two sides of the valve ball 2, the valve body 1 consists of a pair of symmetrical shells, and the pair of shells are mutually and tightly connected through a fastening piece.

Further, the valve further comprises an external pipeline 5 which is connected with the valve body 1 through a flange; an expansion seal mounted between the valve body 1 and the corresponding end face of the outer pipe 5; wherein the expansion seal is compressed and expanded when the flange is connected to the outer pipe 5.

Further, the expansion sealing element comprises a plurality of sealing ring grooves 6 which are oppositely arranged on the end surface of the valve body 1 opposite to the external pipeline 5; the sealing outer ring 7 is sleeved in the sealing ring groove 6 on the valve body 1; and the sealing inner ring 8 is sleeved in the sealing ring groove 6 on the external pipeline 5, and the inner peripheral side of the sealing outer ring 7 and the outer peripheral side of the sealing inner ring 8 are obliquely arranged and are mutually abutted.

Furthermore, the device also comprises a pair of extrusion steel rings 9 which are respectively embedded on the outer periphery side and the inner periphery side of each sealing ring groove 6.

Further, a flexible graphite sealing ring 10 is also included and is installed between the sealing valve seat 4 and the valve body 1.

In the embodiment of this application, through adopting above-mentioned technical scheme, constitute the valve body through a pair of mutual symmetrical casing, there is fine complementarity, just need make the casing of a specification during manufacturing can, it is also more convenient to store in a warehouse, maintenance personal only need carry a casing when the maintenance can, it is corresponding, the part of being connected with each casing is the same specification, has improved the commonality and the suitability of spare part greatly, has reduced manufacturing cost, maintenance cost and maintainer's intensity of labour.

In the preferred embodiment of the present application, the sealing ring groove 6 on the end face of the external pipe 5 is aligned with the sealing ring groove 6 on the end face of the housing, the end face of the external pipe 5 and the end face of the housing are made to approach each other by the cooperation of the fastening member and the flange, the two ends of the outer sealing ring 7 and the inner sealing ring 8 enter the sealing ring grooves 6 on both sides, as the housing and the external pipe 5 get closer together, the outer sealing ring 7 and the inner sealing ring 8 expand towards the outside of the sealing ring groove 6 under the action of the inclined planes abutting against each other, the inner sealing ring 8 compresses towards the inside of the sealing ring groove 6 until the outer peripheral side of the outer sealing ring 7 abuts against the outer peripheral side of the sealing groove, the inner peripheral side of the inner sealing ring 8 abuts against the inner peripheral side of the sealing ring groove 6, and the sealing performance between the end face of the housing and the end face of the external pipe 5 is enhanced.

In the preferred embodiment of the present application, when the inner and outer circumferential surfaces of the inner and outer sealing rings 8 and 7 are respectively abutted against the inner and outer circumferential surfaces of the sealing ring groove 6 by the arrangement of the extrusion steel ring 9, the extrusion steel ring 9 is sunk into the inner and outer sealing rings 8 and 7, and the sealing effect is further improved.

In the preferred embodiment of this application, through the setting of flexible graphite sealing washer 10, sealed temperature resistant is high, and is sealed effectual, installation labour saving and time saving need not to add flexible graphite separately during the use, and flexible graphite sealing washer 10 is comparatively smooth, and the resistance is littleer when making valve ball 2 rotate, and is more nimble.

It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element. Further, it should be noted that the scope of the methods and apparatus of the embodiments of the present application is not limited to performing the functions in the order illustrated or discussed, but may include performing the functions in a substantially simultaneous manner or in a reverse order based on the functions involved, e.g., the methods described may be performed in an order different than that described, and various steps may be added, omitted, or combined. In addition, features described with reference to certain examples may be combined in other examples.

While the present embodiments have been described with reference to the accompanying drawings, it is to be understood that the invention is not limited to the precise embodiments described above, which are meant to be illustrative and not restrictive, and that various changes may be made therein by those skilled in the art without departing from the spirit and scope of the invention as defined by the appended claims.

Claims

1. A symmetric valve, comprising:

the valve body (1) is internally provided with a flow passage;

a valve ball (2) mounted within the valve body (1);

the output end of the pneumatic actuating mechanism (3) is connected with the valve ball (2) through a valve rod and is used for driving the valve ball (2) to rotate;

a pair of sealing valve seats (4) which are arranged in the valve body (1) and are positioned at two sides of the valve ball (2);

the valve body (1) is composed of a pair of shells which are symmetrical to each other, and the pair of shells are mutually and fixedly connected through a fastening piece.

2. A symmetrical valve according to claim 1, further comprising:

an external pipe (5) which is connected with the valve body (1) through a flange;

an expansion seal mounted between the valve body (1) and a respective end face of an external pipe (5);

wherein the expansion seal is compressed and expanded when the flange is connected to an external pipe (5).

3. A symmetrical valve according to claim 2, wherein said inflatable seal comprises:

the sealing ring grooves (6) are oppositely arranged on the end face of the valve body (1) opposite to the external pipeline (5);

the sealing outer ring (7) is sleeved in a sealing ring groove (6) on the valve body (1);

a sealing inner ring (8) sleeved in a sealing ring groove (6) on the external pipeline (5);

wherein, the inner circumference side of the sealing outer ring (7) and the outer circumference side of the sealing inner ring (8) are obliquely arranged and mutually abutted.

4. A symmetric valve according to claim 3, further comprising:

a pair of extrusion steel rings (9) respectively embedded on the outer periphery side and the inner periphery side of each sealing ring groove (6).

5. A symmetric valve according to any one of claims 1-4, further comprising:

and the flexible graphite sealing ring (10) is arranged between the sealing valve seat (4) and the valve body (1).