一种多回转阀门启闭状态的显示装置

Display device for opening or closing state of multi-turn valve

Abstract

The invention relates to a multi-turn valve for controlling fluid media and belongs to the field of fluid control valves. A driving plate capable of rotating along with a valve rod is arranged. Threaded grooves are formed in the driving plate at equal intervals. The number of active turns of each threaded groove depends on the number of opening turns of the valve. An inner hole of the driving plate is matched with the valve rod. The lower end of a cylinder step-shaped pointer is a cylinder adapting to the width of each threaded groove in the driving plate, and is installed in one threaded groove; the upper end of the cylinder step-shaped pointer is a cylinder of a smaller diameter, and used for pointing the number of opening or closing turns; the middle section of the cylinder step-shaped pointer is a cylinder of a proper diameter, is 1.5 mm long and is clamped between the driving plate and a display plate and used for limiting the axial displacement of the pointer. The display plate is arranged on a driving plate base. A straight groove is machined in the display plate in the radial direction and used for containing the pointer and limiting the pointer from moving. Scale marks are marked on the two sides of the straight groove. The distance between the scale marks is twice the screw pitch of each threaded groove. Figures are marked corresponding to the positions of the scale marks.
本发明涉及对流体介质进行控制的多回转阀门,属于流体控制阀门领域。一个可随阀杆转动的拨盘,拨盘上制作出等距的螺纹槽,螺纹槽的有效圈数依阀门的开启圈数确定,拨盘内孔与阀杆配合。一个圆柱台阶形指针,下端是与拨盘上螺纹槽槽宽相适应圆柱体,装入螺纹槽内,上端是一个较小直径的圆柱体,用于指示启闭圈数,中段是一个适中直径的圆柱体,它的长度为1.5毫米,夹在拨盘上面与显示盘下面,用以限制指针的轴向位移。在拨盘座上面设计一个显示盘,显示盘上沿径向加工出直槽,用以容纳指针,并限制指针的位移。在直槽两侧分别刻有刻线,刻线的距离是螺纹槽螺距的两倍,对应于刻线位置刻有数字。

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