Patent ID: 8186266

Claim:
An oil expeller comprising a stand having a base being hollow and having a through hole formed through an upper surface of the base; a supporting bracket mounted securely on the upper surface of the base and having a lower holder having a through hole formed through the lower holder and aligning with the through hole of the base; and at least one guider recess formed in an upper surface of the lower holder and through a side surface of the lower holder; an upper holder mounted upper the lower holder and having a through hole formed through the upper holder; multiple connecting rods mounted securely between the lower and upper holders; and at least one oil guider mounted in the at least one guider recess of the lower holder and protruding out of the side surface of the lower holder; an upper cylinder mounted on the upper holder of the supporting bracket; and a lower cylinder mounted in the base; an oil filter mounted in the supporting bracket of the stand and having an oil guiding base mounted on the lower holder of the supporting bracket and having a lower through hole formed through the oil guiding base and aligning with the through hole of the lower holder; an annular groove formed in an upper surface of the oil guiding base and around the lower through hole of the oil guiding base; an outer oil guiding surface defined in the annular groove, sloped and having at least one low point; and at least one oil outlet formed in a side surface of the oil guiding base, communicating with the annular groove and corresponding to the at least one low point of the outer oil guiding surface and the at least one oil guider of the supporting bracket; a filter tank mounted on the oil guiding base and having multiple oil drain holes formed through the filter tank; and multiple oil flowing indentations formed separately in a lower peripheral edge of the filter tank; a cover mounted on an upper peripheral edge of the filter tank and having an upper through hole formed through the cover; multiple supporting rods mounted securely between the oil guiding base and the cover; and two pressing panels mounted movably in the filter tank; and a control device disposed beside the stand and having an oil tank; multiple oil pipes communicating the oil tank to the upper and lower cylinders; and an oil control valve controlling oil flow between the oil tank and the upper and lower cylinders so the pressing panels are moved by the upper and lower cylinders.