Manual and mechanical double-drive valve

The invention discloses a manual and mechanical double-drive valve and belongs to the technical field of valves. The manual and mechanical double-drive valve comprises a valve body, a shaft frame fixed to the valve body and a mechanical drive device fixed to the shaft frame. The mechanical drive device and a handle are connected with a valve rod through an intermediate transmission mechanism located on the shaft frame. The manual and mechanical double-drive valve is characterized in that the intermediate transmission mechanism structurally comprises a manual operation mechanism for transmitting the moment of force of the mechanical drive device; the manual operation mechanism internally comprises a mechanical operation and manual operation conversion device; the conversion device comprises the handle located on a shaft sleeve of a main shaft for connecting the valve rod with the mechanical drive device, a conversion push rod penetrating the handle, a locking pin and a compression spring, wherein the locking pin and the compression spring are sequentially assembled to the conversion end of the conversion push rod and limited into a sliding hole of the main shaft and a sliding hole of the shaft sleeve. According to the manual and mechanical double-drive valve, in the automatic manner, the locking pin transmits the torque between the main shaft and the shaft sleeve to open or close the valve; and in the manual manner, the locking pin is moved into the main shaft or the shaft sleeve so that the main shaft can be isolated from the shaft sleeve, and the valve can be opened or closed by rotating the handle.