Oscillating sprinkler with toggle valve

摘要

An oscillating sprinkler includes a rotatable cylindrical mount, an impeller housing at one side of the rotatable body, an impeller in the impeller housing, a pair of sweep setting rings at the other side of the rotatable body, and a toggle valve in the rotatable body. The impeller housing has an outlet wall defines two impeller inlets therein. Each of the sweep setting rings has a radial wall provided with an arcuate slot. The rotatable body has a radial inlet wall provided with an aperture. The toggle valve is configured to control which of the impeller inlets in the outlet wall is opened. The toggle valve includes a rocker, a lever, an arm extending the lever and through the aperture in the inlet wall and the slots in the sweep setting rings and a snap bushing sleeved on the arm and having fingers snapped in a groove of the arm.

主权项

1. An oscillating sprinkler, comprising:
a rotatable cylindrical body having a radial inlet wall provided with an aperture and a pair of trunnion saddles disposed on a top of the inlet wall and at opposite sides of the aperture; an impeller housing having an outlet wall opposite to the inlet wall of the rotatable body and a pair of trunnion seats disposed on a bottom of the outlet wall; the outlet wall defining two impeller inlets therein with inward slant end facets respectively; and the trunnion seats being arranged in a line normal to that of the impeller inlets; an impeller disposed in the impeller housing; a pair of sweep setting rings disposed underneath the inlet wall of the rotatable body, and each having a radial wall provided with an arcuate slot; and a toggle valve substantially disposed in the rotatable body and configured to control which of the two impeller inlets in the outlet wall of the impeller housing is opened; and wherein the toggle valve comprises:
a rocker having a pair of slant cover plates disposed in an inverted V-shaped manner and corresponding to the inward slant end facets of the impeller inlets in the outlet wall for covering either one of the two impeller inlets, and a pair of trunnions which are disposed on opposite sides of a junction formed between the two slant cover plates and rested on the trunnion seats of the impeller housing;a switching member including a lever disposed in the rotatable body, a push plate extending from one end of the lever and being normal to the lever, an arm extending from the other end of the lever and through the aperture in the inlet wall of the rotatable body and the arcuate slots of the sweep setting rings, and a pair of trunnions extending from opposite sides of the lever and rested on the trunnion saddles of the rotatable body;a seal ring sleeved on the lever and sealing the aperture in the inlet wall of the rotatable body; anda snap bushing disposed underneath a bottom of the inlet wall of the rotatable body, sleeved on the arm of the switching member and having fingers snapped in a groove defined in the arm.