Ball core positioning mechanism for valve assembly

Abstract

The utility model relates to a kind of ball core positioning mechanism for valve assembly, including operation box and positioning platform, its technical key points are: the positioning ring corresponding to valve end cover is equipped on positioning platform upper surface, horizontal support plate is equipped in operation box, annular track concentric with positioning ring is equipped in horizontal support plate top, load column is supported in annular track top, square through-hole is equipped in load column center, square lifting rod is inserted in square through-hole, the avoiding through-hole corresponding to square lifting rod is respectively equipped on operation box top surface, positioning platform and horizontal support plate, spherical surface support is equipped in the top of square lifting rod, the outer diameter of spherical surface support is less than the inner diameter of valve end cover, lifting drive mechanism is equipped between square lifting rod and load column top surface, rotating drive mechanism is equipped between the outer periphery of load column and operation box inner wall.This mechanism solves the problem of manual installation ball core inconvenient operation, poor precision, reduces assembly difficulty, significantly improves assembly efficiency, and has high precision.

Description

Technical Field

[0001] This utility model relates to the field of ball valve assembly tooling technology, specifically to a ball core positioning mechanism for valve assembly. Background Technology

[0002] Ball valves are mainly used in pipelines to cut off, distribute, and change the direction of media flow. Their structure primarily consists of a valve body, a valve seat within the valve body, a ball, a valve stem connected to the ball, and an end cap connected to the valve body. The installation of the ball is crucial and requires precise positioning; otherwise, the overall sealing of the valve body will be affected. However, the gap between the ball and the valve body is small, making manual installation very inconvenient. Utility Model Content

[0003] The purpose of this invention is to provide a valve assembly ball core positioning mechanism with a reasonable structure and reliable use, which solves the problems of inconvenience and poor accuracy of manual ball core installation, reduces assembly difficulty, significantly improves assembly efficiency, and achieves high accuracy.

[0004] The technical solution of this utility model is: A ball core positioning mechanism for valve assembly includes an operating box and a positioning platform on the top surface of the operating box. The key technical features are: a positioning ring corresponding to the valve end cap is provided on the upper surface of the positioning platform; a horizontal support plate is provided in the operating box; an annular track concentric with the positioning ring is provided above the horizontal support plate; a bearing column is supported above the annular track; a square through hole is provided at the center of the bearing column; a square lifting rod passes through the square through hole; clearance through holes corresponding to the square lifting rod are provided on the top surface of the operating box, the positioning platform, and the horizontal support plate; a spherical support is provided at the top of the square lifting rod; the outer diameter of the spherical support is smaller than the inner diameter of the valve end cap; a lifting drive mechanism is provided between the square lifting rod and the top surface of the bearing column; and a rotation drive mechanism is provided between the outer circumference of the bearing column and the inner wall of the operating box.

[0005] The aforementioned valve assembly ball core positioning mechanism comprises a lifting drive mechanism consisting of a gear supported on the top surface of a bearing column, a lifting motor connected to the gear's axle, and a longitudinal rack located on the outer wall of a square lifting rod and meshing with the gear.

[0006] The aforementioned ball core positioning mechanism for valve assembly comprises a first bevel gear fixed to the outer peripheral wall of the bearing column, a rotary motor fixed to the inner wall of the operating box, and a second bevel gear connected to the output shaft of the rotary motor and meshing with the first bevel gear.

[0007] In the aforementioned ball core positioning mechanism for valve assembly, the centerline of the square lifting rod coincides with the centerline of the valve end cover.

[0008] The ball core positioning mechanism for valve assembly described above has a damping layer on the inner wall of the square through hole that contacts the square lifting rod to ensure smooth lifting.

[0009] The beneficial effects of this utility model are: In use, the valve end cap is positioned using a positioning ring, then a sealing ring is placed inside the valve body. The ball core to be assembled is then placed on the spherical support, with the central hole of the ball core positioned on both sides of the support. After the operator observes and adjusts the support angle, a rotary drive mechanism is used to adjust the square lifting rod, the spherical support, and the ball core around the Z-axis. The operation stops when the ball core aligns with the valve stem installation position on the outside of the valve body. The lifting drive mechanism is then restarted to lower the ball core, allowing it to finally land on the sealing ring, completing the "ball placement and positioning." This invention solves the problems of inconvenience and poor accuracy in manual ball core installation, reduces assembly difficulty, significantly improves assembly efficiency, and achieves high accuracy. Attached Figure Description

[0010] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a cross-sectional view of the present invention; Figure 3 This is a schematic diagram of the assembly operation of this utility model.

[0011] In the diagram: 1. Ball core, 101. Installation position, 102. Central through hole, 2. Valve body, 3. Spherical support, 4. Square lifting rod, 5. Valve stem, 6. Valve end cover, 7. Positioning ring, 8. Positioning platform, 9. Control box, 10. Sealing ring, 11. Longitudinal rack, 12. Gear, 13. Second bevel gear, 14. Rotary motor, 15. Bearing column, 16. Circular track, 17. Horizontal support plate, 18. First bevel gear. Detailed Implementation

[0012] The present invention will be described in detail with reference to the accompanying drawings.

[0013] like Figures 1-3 As shown, the ball core positioning mechanism for valve assembly includes an operating box 9 and a positioning platform 8 located on the top surface of the operating box 9. The upper surface of the positioning platform 8 is provided with a positioning ring 7 corresponding to the valve end cover 6.

[0014] The operation box 9 is provided with a horizontal support plate 17. Above the horizontal support plate 17 is an annular track 16 concentric with the positioning ring 7. Above the annular track 16 is a bearing column 15. The bottom surface of the bearing column 15 is provided with an annular boss that cooperates with the annular track 16.

[0015] The supporting column 15 has a square through hole at its center, through which a square lifting rod 4 passes. The inner wall of the square through hole has a damping layer that contacts the square lifting rod 4 to ensure smooth lifting. The top surface of the operating box 9, the positioning platform 8, and the horizontal support plate 17 each have corresponding clearance through holes for the square lifting rod 4. The top of the square lifting rod 4 has a spherical support 3, the outer diameter of which is smaller than the inner diameter of the valve end cover 6. The centerline of the square lifting rod 4 coincides with the centerline of the valve end cover 6.

[0016] A lifting drive mechanism is provided between the square lifting rod 4 and the top surface of the bearing column 15. In this embodiment, the lifting drive mechanism consists of a gear 12 supported on the top surface of the bearing column 15, a lifting motor (omitted in the figure) connected to the axle of the gear 12, and a longitudinal rack 11 located on the outer wall of the square lifting rod 4 and meshing with the gear 12.

[0017] A rotary drive mechanism is provided between the outer peripheral surface of the support column 15 and the inner wall of the operation box 9. In this embodiment, the rotary drive mechanism consists of a first bevel gear 18 fixed on the outer peripheral wall of the support column 15, a rotary motor 14 fixed on the inner wall of the operation box 9, and a second bevel gear 13 connected to the output shaft of the rotary motor 14 and meshing with the first bevel gear 18.

[0018] Working principle: 1. Place the valve end cover 6 (integrated with the valve body 2) to be assembled on the positioning platform 8, and use the positioning ring 7 to position the valve end cover 6 so that the center line of the valve end cover 6 coincides with the center line of the positioning ring 7. Then, put the sealing ring 10 into the valve body 2 and abut it against the inner stop surface of the valve end cover 6.

[0019] 2. Start the lifting motor. The gear 12 rotates and drives the longitudinal rack 11 and the square lifting rod 4 to rise above the valve body 2. Then, place the ball core 1 to be assembled on the spherical support 3 and make the central through hole 102 of the ball core 1 located on both sides of the spherical support 3.

[0020] 3. Start the rotary motor 14, which drives the bearing column 15, square lifting rod 4 and other peripheral components to rotate through the first bevel gear 18 and the second bevel gear 13. This drives the spherical support 3 and the ball core 1 on it to rotate around the Z-axis. Stop the operation when the ball core 1 is aligned with the installation position 101 of the valve stem 5.

[0021] 4. Restart the lifting motor to reverse it. The gear 12 rotates and drives the longitudinal rack 11 and the square lifting rod 4 to descend into the valve body 2. Finally, the spherical support 3 falls into the valve end cover 6, and the ball core 1 finally falls on the sealing ring 10, completing the pre-positioning.

[0022] The embodiments of this utility model have been described in detail above, but the content described is only a preferred embodiment of this utility model and should not be considered as limiting the scope of implementation of this utility model. All equivalent changes and improvements made within the scope of this utility model should still fall within the scope of this utility model.

Claims

1. A ball core positioning mechanism for valve assembly, comprising an operation box and a positioning platform arranged on the top surface of the operation box, characterized in that: The upper surface of the positioning platform is provided with a positioning ring corresponding to the valve end cap. The operating box is provided with a horizontal support plate. Above the horizontal support plate is a ring track concentric with the positioning ring. Above the ring track is a bearing column. The center of the bearing column is provided with a square through hole. A square lifting rod passes through the square through hole. The top surface of the operating box, the positioning platform, and the horizontal support plate are respectively provided with clearance through holes corresponding to the square lifting rod. The top of the square lifting rod is provided with a spherical support. The outer diameter of the spherical support is smaller than the inner diameter of the valve end cap. A lifting drive mechanism is provided between the square lifting rod and the top surface of the bearing column. A rotation drive mechanism is provided between the outer circumference of the bearing column and the inner wall of the operating box.

2. The ball core positioning mechanism for valve assembly according to claim 1, characterized in that: The lifting drive mechanism consists of a gear supported on the top surface of the support column, a lifting motor connected to the gear's axle, and a longitudinal rack located on the outer wall of the square lifting rod and meshing with the gear.

3. The ball core positioning mechanism for valve assembly according to claim 1, wherein: The rotary drive mechanism consists of a first bevel gear fixed to the outer peripheral wall of the support column, a rotary motor fixed to the inner wall of the operating box, and a second bevel gear connected to the output shaft of the rotary motor and meshing with the first bevel gear.

4. The ball core positioning mechanism for valve assembly of claim 1, wherein: The centerline of the square lifting rod coincides with the centerline of the valve end cap.

5. The ball core positioning mechanism for valve assembly of claim 1, wherein: The inner wall of the square through hole is provided with a damping layer that contacts the square lifting rod.

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