High sealing three-way ball valve

Abstract

The utility model discloses a high sealing three -way ball valve is provided with positioning convexity on the outer circumference of valve seat, and the top of valve ball is provided with valve stem, and the valve stem is sleeved with valve stem seal, packing, gland, disc spring, locking nut, stop sheet and handle sleeve from bottom to top, the locking nut is in screw connection with valve stem, handle sleeve is fixedly connected with valve stem, and the stop sheet is circular ring structure, and two triangular limit convexities are integrally formed on the outer circumference of the circular ring. The utility model uses integrated cladding valve seat, can be more compactly installed in the valve body, can achieve greater sealing contact area, and reduces the cost and risk of installation and maintenance. At the same time, when the valve seat is installed into the valve body, it is not necessary to manually adjust the opening direction, and only needs to align the positioning structure with the corresponding opening on the valve body, so as to ensure the accuracy of the installation direction and meet the flow demand of the third end.

Description

Technical Field

[0001] This utility model relates to the field of valve technology, and in particular to a high-sealing three-way ball valve. Background Technology

[0002] In industrial fluid transport processes, three-way switching valves are widely used as key equipment for switching fluid pathways. Traditional two-seat three-way switching valves have a complex seat installation structure, making installation and replacement cumbersome, increasing maintenance costs and downtime. Furthermore, some three-way switching valves experience significant friction between the valve core and seat during pathway switching, which not only hinders operation but also accelerates seat wear and shortens valve lifespan.

[0003] To address the aforementioned issues, those skilled in the art have attempted to improve the valve seat structure. However, the existing composite valve seat has an unreasonable encapsulation structure design, resulting in weak bonding between the layers of materials. This leads to delamination during long-term use, preventing the effective utilization of the advantages of each material. Utility Model Content

[0004] To solve the above problems, this utility model provides a high-sealing three-way ball valve.

[0005] To solve the above-mentioned technical problems, the technical solution of this utility model is: a high-sealing three-way ball valve, including a valve body, both ends of which are sealed and connected to a connecting end. A valve ball is provided inside the valve body, and a valve seat is provided on each side of the valve ball. A positioning protrusion is integrally formed on the outer circumference of the valve seat. A valve stem is provided on the top of the valve ball. From bottom to top, a valve stem seal, packing, gland, disc spring, lock nut, stop plate, and handle sleeve are fitted on the valve stem. The lock nut is threaded to the valve stem, and the handle sleeve is fixedly connected to the valve stem. The stop plate is a circular ring structure, and two triangular limiting protrusions are integrally formed on the outer circumference of the ring.

[0006] Furthermore, both ends of the valve body are sealed and connected to the connection end via valve body seals and bolts.

[0007] Furthermore, the positioning protrusion of the valve seat matches the positioning groove of the valve body.

[0008] Furthermore, the valve stem seal is fitted onto the shoulder surface of the valve stem.

[0009] Furthermore, the packing, gland, and disc spring are installed in the upper slot of the valve body.

[0010] Furthermore, the top of the handle sleeve is threadedly connected to the top of the valve stem by bolts.

[0011] This utility model uses an integrated encapsulated valve seat, which can be installed more tightly inside the valve body, achieving a larger sealing contact area while reducing installation and maintenance costs and risks. At the same time, when the valve seat is installed into the valve body, there is no need to manually adjust the opening direction. Simply align the positioning structure with the corresponding opening on the valve body to ensure the accuracy of the installation direction and meet the flow requirements of its third end. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is the outline drawing of this utility model; Figure 3 This is a schematic diagram of the valve seat structure.

[0013] The components are: 1. Valve body; 2. Connecting end; 3. Valve ball; 4. Valve seat; 5. Valve body seal; 6. Valve stem; 7. Valve stem seal; 8. Packing; 9. Gland; 10. Disc spring; 11. Locking nut; 12. Stop plate; 13. Handle sleeve. Detailed Implementation

[0014] The following is in conjunction with the appendix Figure 1-3 The technical solution of this utility model has been clearly and completely described. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0015] A high-sealing three-way ball valve includes a valve body 1. Both ends of the valve body 1 are sealed to the connecting end 2 via valve body seals 5 and bolts. A valve ball 3 is installed inside the valve body 1. A valve seat 4 is installed on each side of the valve ball 3. The outer circumference of the valve seat 4 is integrally formed with a positioning protrusion, which matches the positioning groove of the valve body 1. A valve stem 6 is installed on the top of the valve ball 3. From bottom to top, the valve stem 6 is fitted with a valve stem seal 7, packing 8, gland 9, disc spring 10, lock nut 11, stop plate 12, and handle sleeve 13. The lock nut 11 is threaded to the valve stem 6. The top of the handle sleeve 13 is threaded to the top of the valve stem 6 via bolts. The stop plate 12 is a ring structure with two triangular limiting protrusions integrally formed on the outer circumference of the ring. The valve stem seal 7 is fitted onto the shoulder surface of the valve stem 6. The packing 8, gland 9, and disc spring 10 are installed in the upper groove of the valve body 1.

[0016] This high-sealing three-way ball valve uses the valve stem 6 to drive the valve ball 3 to rotate, thereby switching between different flow channels. When the operating handle sleeve 13 is rotated, the handle sleeve 13 drives the valve stem 6 to rotate synchronously, and the connection between the valve stem 6 and the valve ball 3 transmits torque to the valve ball 3.

[0017] During the rotation of the valve ball 3, its surface flow channel corresponds to the channels of the valve seats 4 on both sides, realizing the switching of flow channels such as "direct flow" and "bypass". The valve seat 4 maintains a fixed position by cooperating with the positioning groove of the valve body 1 through the positioning protrusion, and at the same time, the sealing surfaces of the valve seats 4 on both sides hug the valve ball 3 to form a seal and prevent the medium from leaking.

[0018] The locking nut 11 continuously applies preload to the gland 9 and packing 8 through the disc spring 10, which, together with the valve stem seal 7, achieves a dynamic seal between the valve stem 6 and the valve body 1, preventing the medium from leaking from the valve stem.

[0019] The embodiments described above are merely preferred embodiments of this utility model, and not all feasible embodiments of this utility model. For those skilled in the art, any obvious modifications made without departing from the principles and spirit of this utility model should be considered to be included within the scope of protection of the claims of this utility model. Although this utility model has been described above with reference to embodiments, various modifications can be made and components can be replaced with equivalents without departing from the scope of this utility model. In particular, as long as there is no technical conflict, the features in the embodiments disclosed in this utility model can be combined with each other in any way. The lack of an exhaustive description of these combinations in this specification is merely for the sake of brevity and resource conservation. Therefore, this utility model is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A high-sealing three-way ball valve, characterized in that, The valve body includes a valve body with sealing connections at both ends. A valve ball is installed inside the valve body, and a valve seat is installed on each side of the valve ball. The outer circumference of the valve seat is integrally formed with a positioning protrusion. A valve stem is installed on the top of the valve ball. From bottom to top, the valve stem is fitted with a valve stem seal, packing, gland, disc spring, lock nut, stop plate, and handle sleeve. The lock nut is threaded to the valve stem, and the handle sleeve is fixedly connected to the valve stem. The stop plate is a circular ring structure, and the outer circumference of the ring is integrally formed with two triangular limiting protrusions.

2. The high-sealing three-way ball valve according to claim 1, characterized in that, Both ends of the valve body are sealed and connected to the connecting end by valve body seals and bolts.

3. The high-sealing three-way ball valve according to claim 1, characterized in that, The positioning protrusion of the valve seat matches the positioning groove of the valve body.

4. The high-sealing three-way ball valve according to claim 1, characterized in that, The valve stem sealing sleeve is fitted onto the shoulder surface of the valve stem.

5. The high-sealing three-way ball valve according to claim 1, characterized in that, The packing, gland, and disc spring are installed in the upper slot of the valve body.

6. The high-sealing three-way ball valve according to claim 1, characterized in that, The top of the handle sleeve is threadedly connected to the top of the valve stem by bolts.

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