Three-way reversing ball valve

Abstract

The utility model provides a three-way reversing ball valve which comprises a valve body, a ball body, a seat ring, inclined wedge surfaces which are respectively processed on the front side surface, the rear side surface and the right side surface of the ball body and form an included angle alpha with a vertical central axis, and gaps are reserved between the central lines of channels I, II and III and the central line of the spherical surface. The face, abutting against the sealing ring assembly, of the seat ring and the vertical central axis form an included angle alpha. Installation is more convenient through the inclined wedge face with the included angle alpha formed between the ball body and the seat ring, the distance is reserved between the center lines of the channels I, II and III and the center line of the spherical face, the size of the outer circle of the ball body is more compact, cost is reduced, and sealing is more reliable through the arranged sealing assembly.

Description

Technical Field

[0001] The utility model relates to the technical field of ball valves, in particular to a three-way reversing ball valve. Background Art

[0002] Three-way ball valves are primarily used to divert or merge fluids in pipelines, shutting off, distributing, and redirecting the flow of media within pipelines. Their primary function is to connect and close different pipelines by changing the direction of the ball's flow channel. Because a single valve can change the flow direction of media in different pipelines, they are widely used across various industries. Existing three-way ball valves are primarily categorized as T-type and L-type based on the ball structure. Both T-type and L-type three-way ball valves suffer from inconvenient installation, high cost, and unreliable sealing. Utility Model Content

[0003] In response to the deficiencies in the prior art, the utility model provides a three-way reversing ball valve, comprising a valve body, a ball, and a seat ring. The front, rear, and right side surfaces of the ball are each machined with an inclined wedge surface forming an angle α with the vertical center axis. The front and rear inclined wedge surfaces are provided with penetrating channels I and II. The right inclined wedge surface is provided with a channel III connected to the front and rear channels I and II. A spacing is left between the center lines of channels I, II, and III and the center line of the spherical surface. A plane is machined directly below the ball, and a channel IV communicating with channels I, II, and III is provided on the plane. Sealing ring assemblies are provided on the left and right sides of the valve body. The surface where the seat ring abuts the sealing ring assembly forms an angle α with the vertical center axis. A groove is provided on the tail end face of the seat ring, which abuts the boss of the positioning block, and the positioning block is fixedly connected to the valve body.

[0004] Preferably, the sealing ring assembly includes a main sealing ring, an inner sealing ring, and an outer sealing ring. Positioning steps are processed on the inner and outer sides of the main sealing ring near the seat ring, and the inner and outer positioning steps cooperate with the inner and outer sealing rings.

[0005] Preferably, the inner and outer sealing rings are metal rigid bodies.

[0006] Preferably, the ball openings of channels I, II, III, and IV are machined with fillets that intersect with the spherical surface, so that the fillets are tangent to the spherical surface.

[0007] Preferably, a groove for installing an O-ring is provided at the fitting position between the seat ring and the valve body channel, and the cylindrical surface at the rear of the seat ring is processed to a lead angle that is convenient for installation.

[0008] Preferably, the grooves are two symmetrical grooves.

[0009] Preferably, the valve body and the upper valve cover are both formed by a forging process, the valve body is an integrated design, and the valve body and the pipeline are connected by butt welding. Beneficial effects

[0010] The inclined wedge surface with an angle α between the sphere and the seat ring makes installation more convenient. The spacing between the center lines of channels I, II, and III and the center line of the spherical surface makes the outer circle size of the sphere more compact, reducing costs. The sealing assembly provided makes the seal more reliable. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 This is a schematic diagram of the structure of the utility model;

[0012] Figure 2 Schematic diagram of the sealing ring assembly structure;

[0013] Figure 3 Schematic diagram of the main sealing ring structure;

[0014] Figure 4 Schematic diagram of the sphere structure;

[0015] Figure 5 for Figure 4 Cross-section of the middle AA;

[0016] Figure 6 Schematic diagram of the seat ring structure;

[0017] Figure 7 This is a cross-sectional view of the seat ring.

[0018] In the figure: 1. sphere; 2. valve body; 3. seat ring; 4. positioning block; 5. O-ring; 6. sealing ring assembly; 601. main sealing ring; 602. inner sealing ring; 603. outer sealing ring; 7. centerline of sphere; 8. centerline of channel III; 9. inclined wedge surface; 10. centerlines of channels I and II; 11. groove; 12. recess. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0020] See Figure 1-7 A three-way reversing ball valve includes a valve body, a ball, and a seat ring. The front, rear, and right sides of the ball are each machined with an inclined wedge surface that forms an angle α with the vertical center axis. The front and rear inclined wedge surfaces are provided with penetrating channels I and II. The right inclined wedge surface is provided with a channel III that is connected to the front and rear channels I and II. A gap is left between the center lines of channels I, II, and III and the center line of the spherical surface. A plane is machined directly below the ball, and a channel IV that is interconnected with channels I, II, and III is provided on the plane. The ball ports of channels I, II, III, and IV are machined with fillets that intersect with the spherical surface so that the fillets are tangent to the spherical surface.

[0021] The valve body is equipped with sealing ring assemblies on both sides. The sealing ring assemblies include a main sealing ring, an inner sealing ring, and an outer sealing ring. Positioning steps are machined on the inner and outer sides of the main sealing ring near the seat ring. The inner and outer positioning steps cooperate with the inner and outer sealing rings. The inner and outer sealing rings are metal rigid bodies and can provide good support for the main sealing ring. The surface where the seat ring and the sealing ring assembly abut each other forms an angle α with the vertical center axis. The seat ring and the valve body channel are equipped with a groove for installing an O-ring. The cylindrical surface at the rear of the seat ring is machined with a lead angle that facilitates installation. Two symmetrical grooves are provided on the rear end face of the seat ring. The grooves abut against the boss of the positioning block. The positioning block is fixedly connected to the valve body to ensure that the seat ring does not rotate circumferentially.

[0022] The valve body is an integrated design, and the valve body and the pipeline are connected by butt welding, which can avoid the phenomenon of medium leakage from the gasket caused by flange connection.

[0023] It should be noted that, in this document, relational terms such as first and second, etc. are merely used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations.

Claims

1. A three-way reversing ball valve, comprising a valve body, a ball, and a seat ring, characterized in that: The front, rear and right side surfaces of the sphere are each processed with an inclined wedge surface that forms an angle α with the vertical central axis. The front and rear inclined wedge surfaces are provided with penetrating channels I and II. The right inclined wedge surface is provided with a channel III that is connected to the front and rear channels I and II. A distance is left between the center lines of the channels I, II and III and the center line of the spherical surface. A plane is processed at the lower part of the sphere, and the plane is provided with a channel IV that is interconnected with channels I, II and III. Sealing ring assemblies are provided on the left and right sides of the valve body. The surface where the seat ring abuts the sealing ring assembly forms an angle α with the vertical central axis. A groove is provided on the tail end face of the seat ring, and the groove abuts against the boss of the positioning block. The positioning block is fixedly connected to the valve body.

2. The three-way reversing ball valve according to claim 1, characterized in that The sealing ring assembly includes a main sealing ring, an inner sealing ring, and an outer sealing ring. Positioning steps are processed on the inner and outer sides of the main sealing ring near the seat ring, and the inner and outer positioning steps cooperate with the inner and outer sealing rings.

3. The three-way reversing ball valve according to claim 2, characterized in that , the inner and outer sealing rings are metal rigid bodies.

4. The three-way reversing ball valve according to claim 1, characterized in that The ball mouth positions of the channels Ⅰ, Ⅱ, Ⅲ and Ⅳ are machined with fillets that intersect with the spherical surface so that the fillets are tangent to the spherical surface.

5. The three-way reversing ball valve according to claim 1, characterized in that The seat ring and the valve body channel are equipped with a groove for installing an O-ring, and the cylindrical surface at the tail of the seat ring is processed to facilitate the lead angle of installation.

6. The three-way reversing ball valve according to claim 1, characterized in that , the grooves are two symmetrical grooves.

7. The three-way reversing ball valve according to claim 1, characterized in that The valve body is an integrated design, and the valve body and the pipeline are connected by butt welding.

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