Convenient locking device for valve part machining

The utility model is applicable to the technical field of valve processing, and provides a convenient locking device for valve part processing, which comprises a device shell, a connecting plate is fixedly mounted at the bottom end of the device shell, and a processing rotating shaft is detachably arranged on the other side of the connecting plate. According to the convenient locking device for valve part machining, a transmission rod is rotated, a lower clamping plate drives an upper clamping plate to move while moving through threads, so that the lower clamping plate and the upper clamping plate lock and fix materials at the same time, when the length of the materials is large, a fixing bolt is taken out, then the upper clamping plate is pulled to move, and the materials are clamped and fixed. And after adjustment is finished, a fixing bolt is inserted into a threaded hole in a connecting block to fix the upper clamping plate, and the problems that in the fixing process, the length of the upper clamping pla