Patent ID: 6245233
Filing Date: 2001-06-12
Classification: B01D

Abstract:
A water filtering apparatus with water flow switching valve device comprising a water container filled with filtering materials and a switch valve device connected between two ends of the water container, wherein said switch valve device comprises:a valve seat which in a substantially hollow casing and includes a seat body and a base, said base being provided with an annular flange and a pin, said seat body being provided with a threaded intake hole for intake of water, a threaded outlet hole for outputting purified water, a threaded discharge hole for discharge of dirty water, and two water holes for transfer of water, said intake hole being arranged opposite to said outlet hole and in alignment therewith, and said water holes being oppositely arranged and in alignment with each other, such that said intake hole, said outlet hole and said two water holes are spaced apart from each other at an angle of 90 degrees, said discharge hole being located between said outlet hole and one of said water holes at an angle of 45 degrees from each;a split valve which is a substantially hollow casing defining two isolated and non-communicating chambers therein, said split valve being provided with a curved groove at a bottom side thereof and spaced water ports in an outer peripheral wall thereof, said split valve further having a cylindrical rod projecting from the center of an end surface thereof, said rod being provided with two annular grooves and a threaded hole;a control rod which is received in said threaded hole of said rod of said split valve; anda valve cover which may be tightly secured to said valve seat and is provided with a central opening having a raised rim resembling a nut, said central opening receiving said rod of said split valve, whereby said split valve may be manipulated to change the direction of water flow so that the water may be controlled to enter said water container for filtering purposes or to flow reversely into said water container for purging purposes.