Backflow filter for liquids

摘要

A backflow filter for hydraulic liquids includes a filter head which can be attached to a liquid vessel, a filter pot arranged on the one side of the filter head, a cover detachably arranged on the other side of the filter head, a filter element continuously arranged in the filter head and in the filter pot, at least one inlet formed on the filter head for the returning liquid, an air vent formed on the filter head and an aeration filter inserted into this vent. Filter head, filter pot and filter cover are composed of plastic and a hose nipple which is one-piece with the filter head is formed on the inlet for the returning liquid. The air vent is surrounded by a housing which is one-piece with the filter head, which housing can be closed by a cover carrying the aeration filter and the walls of which are furnished with slots open towards the cover, these slots providing passage of air on the one hand and, on the other hand, making possible detachable clipping of the cover into the housing.