CN-121993631-A - Three-way reversing ball valve

Abstract

The invention provides a three-way reversing ball valve which comprises a valve body, a ball body, a seat ring, an upper valve cover and a valve rod, wherein inclined wedge surfaces which form an alpha angle with a vertical central axis are respectively processed on the front side, the rear side and the right side of the ball body, sealing ring assemblies are arranged on the left side and the right side of the valve body at intervals between central lines of channels I, II and III and the central line of the ball body, and the surface, which is abutted against the sealing ring assemblies, of the seat ring forms an alpha angle with the vertical central axis. The inclined wedge surface with the alpha included angle is formed by the ball body and the seat ring, so that the installation is more convenient, a gap is reserved between the center lines of the channels I, II and III and the center line of the spherical surface, the outer circle size of the ball body is more compact, the cost is reduced, and the sealing assembly is more reliable.

Inventors

• SHI XIAODONG
• ZHANG LIHONG
• HUANG JIAYING
• YUAN SAIHUA
• PENG BINGBING

Assignees

• 江苏神通阀门股份有限公司

Dates

Publication Date

20260508

Application Date

20241106

Claims (5)

1. 1. The utility model provides a three-way reversing ball valve, includes valve body, spheroid, seat ring, its characterized in that, the front and back side of spheroid respectively processes the slide wedge face that is alpha contained angle with vertical axis, front and back slide wedge face is equipped with the passageway I, II that runs through, be equipped with on the right side slide wedge face with the passageway III that front and back passageway I, II is linked together, leave the interval between passageway I, II, III central line and the sphere central line, a plane is processed to the spheroid directly inferior part, be equipped with on the plane with passageway IV that passageway I, II, III are linked together, the valve body left and right sides is equipped with sealing washer subassembly, the face of seat ring and sealing washer subassembly looks butt is contained angle alpha with vertical axis, the passageway cooperation department of seat ring and valve body is equipped with the slot of installing O shape circle, the lead angle of seat ring afterbody face of cylinder processing the installation of being convenient for, be equipped with the recess on the seat ring afterbody terminal surface, the boss butt joint of recess and locating piece, locating piece and valve body fixed connection, the valve body is integrated into one piece design, valve body and pipeline adopt butt welding connection mode.
2. 2. The three-way reversing ball valve according to claim 1, wherein the sealing ring assembly comprises a main sealing ring, an inner sealing ring and an outer sealing ring, positioning steps are processed on the inner side and the outer side of the main sealing ring close to the seat ring, and the inner side and the outer side positioning steps are matched with the inner sealing ring and the outer sealing ring.
3. 3. The three-way reversing ball valve of claim 2, wherein the inner and outer seal rings are metal rigid bodies.
4. 4. The three-way reversing ball valve of claim 1, wherein the port of the channel I, II, III, IV is formed with a fillet intersecting the sphere such that the fillet is tangential to the sphere.
5. 5. The three-way reversing ball valve of claim 1, wherein the grooves are two symmetrical grooves.

Description

Three-way reversing ball valve Technical Field The invention relates to the technical field of ball valves, in particular to a three-way reversing ball valve. Background The three-way ball valve is mainly used for dividing or converging pipeline fluid, cutting off, distributing and changing the flow direction of medium in pipeline, and has the main functions of realizing the communication and closing of different pipelines by changing the direction of the ball flow passage hole. The existing three-way ball valve is mainly divided into T-shaped and L-shaped three-way according to the ball structure. The T-shaped or L-shaped three-way ball valve has the problems of inconvenient installation, high cost and unreliable sealing. Disclosure of Invention Aiming at the defects of the prior art, the invention provides a three-way reversing ball valve which comprises a valve body, a ball body and a seat ring, wherein the front side, the rear side and the right side of the ball body are respectively provided with inclined wedge surfaces which form an alpha angle with a vertical central axis, the front inclined wedge surface and the rear inclined wedge surface are provided with through channels I, II, the right inclined wedge surface is provided with a channel III which is communicated with the front channel I, II and the rear channel I, II, a space is reserved between the central lines of the channels I, II and III and the central line of the ball body, a plane is arranged right below the ball body, the plane is provided with a channel IV which is mutually communicated with the channels I, II and III, the left side and the right side of the valve body are provided with sealing ring assemblies, the contact surfaces of the seat ring and the sealing ring assemblies form an included angle alpha with the vertical central axis, the channel matching position of the seat ring and the valve body is provided with grooves for installing O-shaped rings, the tail cylindrical surface of the seat ring is provided with lead angles which are convenient to install, the tail end surfaces of the seat ring are provided with grooves which are abutted against the boss of the positioning block, the positioning block is fixedly connected with the valve body, the valve body is designed in an integral manner, and the butt welding connection is adopted between the valve body and the pipeline. Preferably, the sealing ring assembly comprises a main sealing ring, an inner sealing ring and an outer sealing ring, wherein the inner side and the outer side of the main sealing ring are close to the seat ring and are provided with positioning steps, and the inner side and the outer side of the positioning steps are matched with the inner sealing ring and the outer sealing ring. Preferably, the inner and outer seal rings are metal rigid bodies. Preferably, the mouth of the channel I, II, III, IV is formed with a radius that intersects the sphere such that the radius is tangential to the sphere. Preferably, the grooves are two symmetrical grooves. Advantageous effects The inclined wedge surface with the alpha included angle is formed by the ball body and the seat ring, so that the installation is more convenient, a gap is reserved between the center lines of the channels I, II and III and the center line of the spherical surface, the outer circle size of the ball body is more compact, the cost is reduced, and the sealing assembly is more reliable. Drawings FIG. 1 is a schematic diagram of the structure of the present invention; FIG. 2 is a schematic diagram of a seal ring assembly; FIG. 3 is a schematic view of a main seal ring structure; FIG. 4 is a schematic diagram of a sphere structure; FIG. 5 is a cross-sectional view of A-A of FIG. 4; FIG. 6 is a schematic view of a seat ring structure; Fig. 7 is a cross-sectional view of the seat ring. In the figure, a ball body 1, a valve body 2, a seat ring 3, a positioning block 4, a 5.O-shaped ring 6, a sealing ring component 601, a main sealing ring 602, an inner sealing ring 603, an outer sealing ring 7, a spherical center line 8, a channel III center line 9, a wedge surface 10, a channel I, II center line 11, a groove 12 and a groove. Detailed Description The following description of the embodiments of the present invention will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all, of the embodiments of the present invention. All other embodiments, which can be made by one of ordinary skill in the art without undue burden from the inventor, are within the scope of the invention. Referring to fig. 1-7, a three-way reversing ball valve comprises a valve body, a ball body and a seat ring, wherein the front side, the rear side and the right side of the ball body are respectively provided with inclined wedge surfaces which form an alpha included angle with a vertical central axis, the front inclined wedge surface and