Powerless back-flow prevention apparatus
AssigneeKorea Machinery Ind. Inc.
InventorJongsun Kim
Life of this patent
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Abstract
There is provided a powerless back-flow prevention apparatus comprising: a body having a sewage inlet at a front thereof, a sewage outlet at a rear thereof, and a length-wise sewage channel there between; a door pivotally coupled to the body at the rear thereof to open or close the outlet, wherein the door comprises: a number of floating members arranged spacedly with each other; and a guide disposed on the floating members to pivot upwards via the floating force to close the outlet, and to pivot downwards via a gravity in an absence of the sewage back-flow to open the outlet, and, then to guide the sewage from the outlet.
Claims10
A powerless back-flow prevention apparatus comprising:
- a body having a water inlet at a front thereof, a water outlet at a rear thereof, and a length-wise water channel there between;
- a door pivotally coupled to the body at the rear thereof to open or close the outlet,
- wherein the door comprises:
- a number of floating members arranged spacedly with each other, each floating member being configured to generate a floating force using a back-flow of water toward the outlet;
- and
- a guide disposed on the floating members to pivot upwards via the floating force to close the outlet, and to pivot downwards via a gravity in an absence of the water back-flow to open the outlet, and, then to guide the water from the outlet,
- wherein the guide comprises:
- a guide plate disposed on the floating members to guide the water from the outlet;
- and
- side blocking plates extending upwards from the guide plate at both side ends thereof respectively to guide the water from the outlet, wherein the apparatus further comprises a contaminant storage to collect therein external contaminants.
Dependencies are inferred from the claim text.