CN214579258U

CN214579258U - Reduce rotation-proof structure of bellows stop valve moment of torsion

Info

Publication number: CN214579258U
Application number: CN202022898859.2U
Authority: CN
Inventors: 张静; 倪袁博; 孙超; 朱帅全; 师晓东; 徐雷秋
Original assignee: Jiangsu Shentong Valve Co Ltd
Current assignee: Jiangsu Shentong Valve Co Ltd
Priority date: 2020-12-07
Filing date: 2020-12-07
Publication date: 2021-11-02
Anticipated expiration: 2030-12-07

Abstract

The utility model provides a reduce rotational structure of bellows stop valve moment of torsion, includes the valve rod, prevents changeing piece, valve gap, and the valve rod upper end mills flat, mills flat department at the valve rod through the screw to preventing changeing the piece connection, prevents changeing the both ends of piece and is equipped with the bearing, and the bearing stretches into in the slotted hole that is equipped with on the support of valve gap upper end. The beneficial effects of the utility model are that, structure after the improvement prevents changeing the roll rotation-proof greatly reduced the valve and opens and close the moment of torsion to slip, has reduced drive arrangement's output torque, energy saving reduce cost.

Description

Reduce rotation-proof structure of bellows stop valve moment of torsion

Technical Field

The utility model relates to an anti-rotation structure, especially an anti-rotation structure who reduces bellows stop valve moment of torsion.

Background

At present, the upper end of a valve rod of an existing anti-rotation structure of the corrugated pipe stop valve is milled flat, an anti-rotation block is connected to the flat milling position of the valve rod through a screw, two ends of the anti-rotation block are grooves, and reinforcing ribs on a valve cover extend into the grooves of the anti-rotation block. The upper end of the valve rod is connected with the driving device, when the driving device drives the valve rod to move, the groove of the anti-rotation block is in contact with the reinforcing rib on the valve cover to limit the rotating motion of the valve rod, the valve rod is guaranteed to only do lifting motion, and the corrugated pipe is protected from being damaged by torsion. However, the anti-rotation block of the anti-rotation structure is in contact with the reinforcing rib to generate sliding friction, and the torque generated in the movement process is very large, so that the output torque of the driving device is necessarily large, and the cost and the resource waste are increased.

SUMMERY OF THE UTILITY MODEL

In order to solve the prior art not enough, the utility model provides a reduce rotational structure of bellows stop valve moment of torsion.

The technical scheme of the utility model, a reduce rotation-proof structure of bellows stop valve moment of torsion, including the valve rod, prevent changeing piece, valve gap, the valve rod upper end is milled flat, connects the rotation-proof piece at the valve rod through the screw and mills flat department, prevents changeing the both ends of piece and is equipped with the bearing, and the bearing stretches into in the slotted hole that is equipped with on the support of valve gap upper end.

Preferably, the bearing is a deep groove ball bearing.

Preferably, the slotted holes are racetrack shaped.

The beneficial effects of the utility model are that, structure after the improvement prevents changeing the roll rotation-proof greatly reduced the valve and opens and close the moment of torsion to slip, has reduced drive arrangement's output torque, energy saving reduce cost.

Drawings

FIG. 1 is a schematic structural view of the present invention;

fig. 2 is a sectional top view of a-a in fig. 1.

In the figure: 1. a drive device; 2. a rotation prevention block; 3. a screw; 4. a bearing; 5. a valve stem; 6. a valve cover; 7. a bellows.

Detailed Description

As shown in the figure, a reduce rotational structure of bellows stop valve moment of torsion, include valve rod 5, prevent changeing piece 2, valve gap 6, the flat department is milled at valve rod 5 to the last end of valve rod 5, prevents changeing piece 2 and connects through screw 3, prevents that the both ends of changeing piece 2 are equipped with bearing 4, and bearing 4 is deep groove ball bearing, and bearing 4 stretches into the runway slotted hole that is equipped with on the support of valve gap 6 upper ends.

The structure uses the rolling contact of the bearing 4 and the runway groove hole on the valve cover 6 bracket to prevent rotation, while the traditional structure adopts the sliding rotation prevention. The improved structure converts sliding rotation prevention into rolling rotation prevention, greatly reduces the opening and closing torque of the valve, reduces the output torque of the driving device 1, saves energy and reduces cost.

The present embodiment is only for explaining the present invention, and it is not limited to the present invention, and those skilled in the art can make modifications to the present embodiment without inventive contribution as required after reading the present specification, but all of them are protected by patent laws within the scope of the claims of the present invention.

Claims

1. The utility model provides a reduce rotational structure of bellows stop valve moment of torsion, includes the valve rod, prevents changeing piece, valve gap, the valve rod upper end mills flat, and the piece connection that prevents changeing at the valve rod through the screw mills flat department, its characterized in that, the both ends of preventing changeing the piece are equipped with the bearing, and the bearing stretches into in the slotted hole that is equipped with on the support of valve gap upper end.

2. An anti-rotation structure for reducing torque of a bellows stop valve according to claim 1, wherein the bearing is a deep groove ball bearing.

3. An anti-rotation structure for reducing torque of a bellows stop valve according to claim 2, wherein the groove hole is race track-shaped.