초록 ▼

A filter includes a bed of particulate solids for removal of contaminants from a fluid directed in a downstream direction therethrough. A barrier is located downstream of the bed of particulate solids and includes an anchoring member having flexible members joined thereto and projecting outwardly th

A filter includes a bed of particulate solids for removal of contaminants from a fluid directed in a downstream direction therethrough. A barrier is located downstream of the bed of particulate solids and includes an anchoring member having flexible members joined thereto and projecting outwardly therefrom. The flexible members are closely spaced to each other for providing a closely-spaced network of flexible members to establish multiple barrier layers in the downstream direction of fluid flow through the barrier. In one embodiment the barrier is in the form of a planar member generally coextensive with a bottom wall of the filter and includes a plurality of anchoring members spaced-apart horizontally from each other. In another embodiment the barrier is in the form of a strainer with the anchoring members being spaced-apart vertically from each other and with the flexible members joined thereto being spaced transversely along the anchoring members to provide the multiple barrier layers.

대표청구항 ▼

A filter including an inlet means for fluid to be treated, an outlet means downstream of said inlet means for treated effluent and means defining a fluid-solids contact chamber between said inlet means and outlet means; said fluid-solids contact chamber including particulate solids through which the

A filter including an inlet means for fluid to be treated, an outlet means downstream of said inlet means for treated effluent and means defining a fluid-solids contact chamber between said inlet means and outlet means; said fluid-solids contact chamber including particulate solids through which the fluid to be treated is adapted to pass in a downstream direction for removal of contaminants from said fluid, and a barrier downstream of, and in engagement with said particulate solids, said barrier including an anchoring member and a plurality of flexible members joined to said anchoring member and extending outwardly therefrom, said flexible members being closely spaced to each other for providing a closely-spaced network of said flexible members, said network providing multiple layers of flexible members in the downstream direction of fluid flow through said barrier during filtration. A strainer for use in a filter, said strainer including a plurality of anchoring members spaced-apart from each other in a first direction to provide a space between adjacent anchoring members, a plurality of flexible members joined to said anchoring members, said flexible members extending outwardly from the anchoring members into the spaces between adjacent anchoring members and being oriented generally in said first adjacent, said anchoring members in each of said spaces being closely spaced to each other in a direction laterally of said first direction to form multiple layers of said flexible members, said multiple layers being spaced apart from each other in a direction laterally of said first direction, conduit means joined to said anchoring members and having surface means defining an elongate passageway therethrough for communicating with the outlet from a filter in which the strainer is to be used, said conduit means having a side wall with passage means therethrough, said passage means being in communication with said elongate passageway and also located in alignment with the spaces between adjacent anchoring members for receiving the flow of fluid to be treated after said fluid has passed through the multiple layers of flexible members disposed in the spaces of the strainer.