Patent ID: 8960070
Filing Date: 2015-02-24
Classification: E03D,E03F

Abstract:
1. A sewage suction device comprising: a cylinder sleeve having an interior and a wall, the cylinder sleeve having a stepped hole in the interior and a waste-discharging outlet on the wall; a cylinder liner with a bottom and a cyliner wall, the cylinder liner having a shaft hole at the bottom wherein the cylinder wall is provided with a flange; a piston having a piston rod; a cylinder sleeve cover having an axis and a body, the cylinder sleeve cover having a stepped hole along the axis, the body of the cylinder sleeve cover being provided with a hanging hole; a first spring that resides between the cylinder liner and the cylinder sleeve; a cylinder liner lock clutching the piston rod; a shifting fork assembly being fixed inside the stepped hole of the cylinder sleeve cover; a ring shaped cylinder liner lock seat having a slope and a pivot pin; and an annular end cover having a center and a through hole through the center; wherein: the cylinder liner with the bottom is located inside the cylinder sleeve, the piston is located inside the cylinder liner, the cylinder sleeve cover is connected to the cylinder sleeve along the axis, the cylinder liner lock seat is located between the cylinder sleeve and cylinder sleeve cover, the annular end cover caps the cylinder sleeve cover.