Patent ID: 11953119
Assignee: SHENZHEN KEYTO FLUID TECHNOLOGY CO., LTD
Field: Medical technology (Instruments)
Classification: CPC F  A  Y | IPC A  F

Claim 2:
3. The micro-metering device of claim 1, wherein the rotation drive assembly comprises a rotation drive motor, a rotary shaft, a zero-position code disk, a positioning code disk and a rotary photoelectric sensor;
the rotation drive motor is fixedly arranged on a side of the mounting seat away from the rotary shear valve; a first end of the rotary shaft is in transmission connection with the rotation drive motor, and a second end of the rotary shaft is in transmission connection with the valve spool; the zero-position code disk and the positioning code disk are both sleeved on an outer wall of the rotary shaft, and are coaxial with the rotary shaft; the rotary photoelectric sensor is arranged on a side of the rotary shaft, and is adapted to the zero-position code disk and the positioning code disk; and the rotation drive motor and the rotary photoelectric sensor are electrically connected to the controller.