Patent ID: 8206135

Claim:
A valve-type oil feeder, comprising a housing, a valving spindle, and a piston, wherein: the housing has a valve chamber and a piston chamber, the valve chamber has an oil inlet, a first outlet, and a second outlet; the piston chamber has an oil intake chamber, an oil discharge chamber, and an oil outlet; the oil intake chamber communicates with the second outlet, and the oil discharge chamber communicates with the first outlet and the oil outlet respectively; the valving spindle is arranged in the valve chamber and movable between an original position at which the oil inlet is cut off from the second outlet while the first outlet communicates with the second outlet, and a working position at which the oil inlet communicates with the second outlet while the first outlet is cut off from the second outlet; the piston is arranged in the piston chamber and can slide axially under the action of a returning element and the oil pressure.