Improved hand pump for oil delivery pump

Abstract

The invention discloses an improved hand pump for an oil delivery pump, and belongs to the technical field of oil pumps. The improved hand pump comprises a hand pump main body, a sealing gasket is arranged at the threaded joint between a pump head and a pump body, a pressing rod is arranged at the top of the pump head in an inserting mode, the bottom of the pressing rod is connected with a sealingconnecting piece, a moving through hole matched with the pressing rod is formed in the pump head, a connecting rod is arranged at the bottom of the sealing connecting piece, the bottom of the connecting rod extends to the position below a bulge and is connected with a piston, a supporting rod is arranged at the top of a rotating shaft seat, a fixing bolt is inserted in the front side of an installing opening, threads are arranged at the rear end of the fixing bolt, a butterfly nut is arranged on the outer wall of the front side of the top of the pressing rod in an inserting mode. When the hand pump is not used, through the tight attachment between the sealing connecting piece and a conical hole and effective sealing of an elastic sealing ring, the situations that due to the fact that rainwater and the like flow into the pump body, a cavity is corroded through rusting in the pump body, then the piston can be stuck and cannot be used, so that a spring is rusted, and the service life isshortened can be avoided.

Description

technical field [0001] The invention relates to the technical field of oil pumps, in particular to an improved hand pump for oil delivery pumps. Background technique [0002] The hand pump plays the role of removing the air in the oil delivery pipeline and the oil pump on the diesel engine oil delivery pump. Although it is used less frequently, it is a necessary part of the diesel engine oil delivery pump. [0003] The existing hand pumps for oil transfer pumps have poor sealing performance. When not in use, rainwater and the like are easily poured into the corrosion cavity in the pump body, causing the piston to be stuck and unable to work normally, resulting in the hand pump being unusable and increasing the cost of use. The existing hand pumps are laborious to use. When the users use them for a long time, due to the gradual increase in fatigue, the work efficiency is low, and most of the hand pumps we are currently using are integrated. When the operator leaves temporaril...

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