WATER DRIVEN WASTE DISPOSAL APPARATUS

摘要

A water powered waste disposal apparatus (10) has an adjustable valve (14) with adjustable operating pressure requirements. The disposal apparatus (10) has a plurality of cutters (34) disposed in a passageway (30) for cutting waste. A reciprocating piston (74) is driven by pressurized water in an annular chamber (58). The piston (74) is coupled to at least one rotatable cutter (54). The valve (14) has a reciprocating control piston (110) for selectively diverting the pressurized water into the annular chamber (58) on alternate sides of the drive piston (74). A reciprocating pilot piston (160) selectively conveys the pressurized water to alternate sides of the control piston (110) in response to water pressure in the annular chamber (58). A detent (208) and spring (218) apply an amount of resistance to the pilot piston (160) such that water pressure in the annular chamber (58) must reach a certain threshold pressure to overcome the resistance of the detent (208) and spring (218). An adjustment mechanism (230) has a threaded member (234) engaging the spring (218) to adjust the amount of resistance applied by the detent (208) to the pilot piston (160) as the threaded member is advanced and retracted.