Device for measuring rotation angle of valve element

The invention discloses a device for measuring the rotation angle of a valve element. The device comprises a base, a first retaining body, a handle rod, a driving mechanism and a dial, wherein the first retaining body is arranged on the base, and the valve body is positioned on the first retaining body; the handle rod is fixed to the end of the valve element, a window is formed in the handle rod,and a pointer is formed on the window; the driving mechanism is arranged on the first retaining body, and the driving mechanism is used for driving the handle rod to rotate; the dial is arranged on the first retaining body; and the pointer is used for indicating scale values on the dial. The rotation angle of the valve element is obtained by measuring the rotation angle of the handle rod, the rotation angle of the handle rod is easier to measure due to the fact that the handle rod has a certain length, and then the precision of the obtained rotation angle of the valve element is higher. 本发明公开了一种用于测量阀芯转角的装置，包括：基座；第一保持体