초록 ▼

An extended-area filter for filtering plastic stock at high pressures has a breaker plate with an undulating surface confronting the oncoming stock which substantially doubles the available filter area. Screen packs having fixed therein the same surface configuration are supported uniformly on the u

An extended-area filter for filtering plastic stock at high pressures has a breaker plate with an undulating surface confronting the oncoming stock which substantially doubles the available filter area. Screen packs having fixed therein the same surface configuration are supported uniformly on the undulating surface against collapse under the operating pressure.

대표청구항 ▼

In an apparatus to filter a fluid material under high pressure in the range of 10,000 pounds per square inch or greater, said apparatus including means defining a passage through which said material is forced to flow under such high pressure, extended-area filter means located iN the path of said fl

In an apparatus to filter a fluid material under high pressure in the range of 10,000 pounds per square inch or greater, said apparatus including means defining a passage through which said material is forced to flow under such high pressure, extended-area filter means located iN the path of said flow comprising a rigid breaker plate across said passage in a principal plane which is essentially the same as a right-cross section of said flow, said plate having a rigid corrugated surface extending across said passage for confronting oncoming high pressure flow with an enlarged filter area that is substantially two times larger than the plane area of said principal plane contained within the bounds of said passage, means providing a plurality of holes through said breaker plate and said corrugated surface for passage therethrough of filtered material, screen means removably supported on said corrugated surface, said screen means comprising at least one primarily two-dimensional screen made of a shape-retaining material and having substantially permanently fixed therein a corrugated shape configuration that corresponds substantially identically to the shape-configuration of said rigid corrugated surface, said plate giving substantially uniform support throughout said enlarged filter area to said screen means against said high pressure for preventing collapse of said screen means during the intended operation of said apparatus.