公开(公告)号：US4468321A

公开(公告)日：1984-08-28

申请号：US465899

申请日：1983-02-17

Applicant: Gerald D. St. John

Inventor： Gerald D. St. John

IPC: B01D29/05 ,  B01D29/10

CPC classification number: B01D29/05 ,  B01D2201/4069 ,  Y10S55/06

Abstract: The filter device is for filtering liquids and has a reservoir member for receiving the liquid to be filtered and a spout member for exit of the liquid after it is filtered, the spout member being assembled to the reservoir member with a filter disc therebetween. Each of these members has an annular ceramic magnet, these ceramic magnets being adjacent each other when the members are assembled whereby the magnetic attraction sealingly clamps the filter disc between the members. In accordance with the invention, the annular ceramic magnet of the reservoir member is completely enclosed within a closed annular cavity in the organic plastic of the reservoir member, the annular magnet being of smaller size than the annular cavity; and the annular ceramic magnet of the spout member is completely enclosed within a closed annular cavity in the organic plastic of the spout member, this annular magnet also being of smaller size than the annular cavity in which it is enclosed. Hence, the ceramic magnets are protected by the organic plastic against chipping, cracking, corrosion or like deterioration but because they are of smaller size than the cavities there is room for expansion, without creation of stresses, when the device is heated in an autoclave as is sometimes required.

Abstract translation: 过滤装置用于过滤液体，并且具有用于接收待过滤液体的储存器构件和用于在过滤之后液体排出的出口构件，所述喷口构件与其间的过滤盘组装到储存器构件。 这些构件中的每一个具有环形陶瓷磁体，当构件组装时，这些陶瓷磁体彼此相邻，由此磁吸引件将构件之间的过滤盘密封地夹紧。 根据本发明，储存器件的环形陶瓷磁体被完全封闭在储存器件的有机塑料中的封闭的环形空腔内，环形磁体的尺寸小于环形空腔; 并且喷嘴构件的环形陶瓷磁体被完全封闭在喷口构件的有机塑料中的封闭的环形空腔内，该环形磁体的尺寸也小于封闭的环形空腔。 因此，陶瓷磁体受到有机塑料的保护，防止破碎，开裂，腐蚀或类似劣化，但是由于它们的尺寸比腔体尺寸小，因此在高压釜中加热装置时会产生膨胀空间，而不会产生应力 有时需要。