Patent ID: 8209814
Filing Date: 2012-07-03
Classification: B65F

Abstract:
1. An air intake for a vacuum-conveyance waste collection system comprising: an air inflow pipe including an upper air inflow opening and a lower air inflow opening to admit outside air; a noise pipe including an upper end inserted under the air inflow pipe, wherein a sound absorption material is attached to an inner wall surface of the noise pipe; and a housing including an air suction valve, wherein a sound absorption material is attached to an inner wall surface of the housing and the housing is connected to a lower end of the noise pipe, thereby guiding the air admitted through the air inflow pipe to a waste conveying line, wherein an upper rain cap in a cone shape is installed at an upper position in the air inflow pipe, a mesh is installed at the upper end of the noise pipe, and a lower rain cap in a frustum shape including a central through-hole is installed between the upper rain cap and the mesh.