Abstract:
Disclosed is a system for filtering fluids comprising a primary filter (2) having at least one filter element that can be penetrated in one direction during the filtration process and can he penetrated in the opposite direction for a backflushing process, further comprising an aftertreatment device (36) which is mounted downstream of the priniaty filter (2) in order for the backflushed quantities discharged by the primary filter to be processed and which includes at least one filter chamber (11) that holds the backflushed quantities and has a fluid inlet, a fluid outlet and at least one aftertreatment filter element (19), and comprising a control device (9) for delivering one portion of the backflushed quantity at a time to the associated aftertreatment filter element (19).
Abstract:
A waste filtration system is provided, suitable for separating waste content in a waste stream, for use in heat recovery, including a filter screen, auger and extractor pump. A novel filtering process includes steps of adjusting extraction rate of waste content by feedback measurement such that a target set-point is maintained. The feedback control is provided by either use of a variable speed motor detecting load change on the auger or sensors correlated to waste content, and displacement type extraction pump The waste filtration system can be used in a closed loop without leaks or open waste. The resulting filtered fluid is suitable for improving performance in heat exchange and recovery arrangements.
Abstract:
The invention relates to a filter device for polymer melts, having a filter screen (1), through which the polymer melt to be purified is guided, wherein the filter device comprises at least one scraping element (2), which glides across the upstream surface (4) of the filter screen (1) with its scraping edge (3), or rests on the surface (4) with its end area nearest the scraping edge (3), and lifts off and/or scrapes off the contaminations (6) adhering to the surface (4) and those present in front of the screen orifices (5) in the course of its movement across the surface (4). According to the invention it is provided that the scraping edge (3) has a curvature (7) at least in the end area of the same, leading in the direction of movement (16), the radius (R) of which is less than 90%, preferably less than 50%, in particular less than 20% of the maximum diameter, or of the maximum orifice width of the screen orifices (5).
Abstract:
A filter insert for filtering a fluid, comprising: an elongate closed-ended tube including a circumferential sealing rim; and a conduit for conveying fluid, one end of the conduit forming an inlet opening, the other end of the conduit being suitable for dispersing fluid into a filter medium located within the tube.
Abstract:
본 발명은 물을 유입하기 위한 유입구 및 상기 유입구를 통해 유입된 물을 유출하기 위한 유출구가 마련된 필터 하우징, 상기 필터 하우징 내에 설치되어 상기 유입구로부터 유입된 물을 여과하도록 중공 형상으로 마련된 복수의 필터부재, 상기 필터 하우징 내에 형성되어 상기 유입구로부터 유입된 물이 상기 필터부재의 양측에 형성된 개구부로 각각 공급되도록 상기 필터부재의 양측에 마련된 유입부, 및 상기 필터부재에 의해 여과된 이물질을 상기 필터부재로부터 역세척하도록 상기 복수의 필터부재 중 적어도 하나의 양측에 연결된 역세척부를 포함하는 필터장치에 관한 것이다.
Abstract:
Procédé de lavage d'un filtre (F) ayant au moins deux couches de médias filtrants (4, 5) pour une eau brute contenant des composants ayant tendance à former des galettes (M), notamment pour une eau de mer, les couches de médias filtrants étant supportées par un plancher (6) comportant des orifices de passage et muni de buses (6a) permettant une injection d'air et/ou d'eau de lavage, l'eau brute s'écoulant de haut en bas à travers les couches et l'eau traitée étant récupérée en partie basse du filtre, lequel comporte en partie haute au moins un déversoir (D) pour la collecte de l'eau de lavage, procédé selon lequel les étapes successives suivantes sont effectuées : a/ on ferme l'arrivée d'eau brute (2), puis la vanne de sortie filtration (13), on assure une dépressurisation du filtre, et on casse le gâteau de filtration; b/ on abaisse le plan d'eau dans le filtre; c/ on insuffle de l'air seul sous pression en partie basse du filtre, cet air traversant de bas en haut les couches du filtre et provoquant, en particulier par friction, la réduction des galettes en particules; d/ on effectue un rinçage à l'eau seule, de bas en haut, le temps de rinçage à l'eau étant suffisamment court pour que le plan d'eau s'arrête au-dessous du niveau du bord supérieur du déversoir de collecte d'eau de lavage; e/ on vide à nouveau l'eau du filtre par une évacuation en partie basse; f/ on répète au moins une fois les étapes c/, d/ et e/, et on procède à un rinçage final en faisant passer une quantité d'eau de rétro-lavage injectée en partie basse du filtre et évacuée de la partie haute du filtre par une conduite (14).