Dry oil dispensers are used for the lubrication of machines or equipment, especially distribution devices with reciprocating distribution slide valves. The dry oil distributor consists of a valve body and a valve seat, an O-ring, a pipe joint, a piston, a piston spring, a coupling, a piston rod, an oil suction spring and an indicator rod. The valve body is divided into two parts: the oil filling valve body and the oil suction valve body, which are screwed together or joined together by other methods. It has the advantages of high sensitivity, no oil leakage, good reliability and long service life. It is widely used in metallurgy, mining, heavy machinery, electric power, chemical, building materials, petroleum, port, dock, paper, ship lock, environmental protection, military, machine tools, tunnel engineering and other enterprises or fields, is an important component of automatic lubrication. The pump is a single-outlet electric lubrication pump that is driven by a geared motor and that discharges lubricant. Its high output pressure allows the lubrication system to have a relatively high working pressure to ensure lubrication points. There are three kinds of displacement specifications, which can conveniently form a centralized lubrication system with low investment according to different needs. The concentrated lubrication of dry oil composed of it has the characteristics of long conveying distance and small diameter of oil supply pipe.