on-off spool

Abstract

The present application relates to the technical field of valve, and discloses a switch valve core, which comprises an execution part and a control part, the execution part comprises a fixed sheet and a moving sheet, the fixed sheet is sequentially provided with an inlet hole and an outlet hole along a first direction, the moving sheet is slidingly arranged on one side of the fixed sheet along the first direction and comprises an open position and a closed position relative to the fixed sheet, at the open position, the moving sheet connects the inlet hole and the outlet hole, at the closed position, the moving sheet seals the inlet hole or the outlet hole, the control part comprises a driving assembly and a gear assembly, the driving assembly drives the moving sheet to slide through the gear assembly, and the output force of the gear assembly is greater than the input force. When the pipeline hydraulic pressure of the valve core is large or the water quality is poor, the output force of the gear assembly is greater than the input force, so that the input force of the gear assembly is ensured to be within a reasonable threshold, and the driving assembly can easily drive the moving sheet to slide relative to the fixed sheet.

Images