The purpose of the present invention is to provide a lubricant injector that implements extrusion and pumping of a lubricant using a single power source, and that can intermittently perform the extrusion of the lubricant, the lubricant injector including: a storage unit including: a storage chamber filled with a lubricant; a piston provided in the storage chamber; a screw shaft coupled to the piston to lift and lower the piston while rotating; a following gear provided on a lower end of the screw shaft; and an elastic support member provided to elastically support the following gear; a power generation unit provided to provide a rotation driving force; and an emission unit including: a cylindrical cam rotating by operating in conjunction with the power generation unit; a driving gear provided on an upper end of the cylindrical cam; a plunger pumping the introduced lubricant; and a discharge passage.

An electric-powered lubricator in one aspect of the present disclosure includes a first manual switch, an electric motor, a drive circuit, a pump, a memory device, and a control circuit. The memory device stores one or more reference values. Each of the one or more reference values corresponds to a mass of lubricant to be dispensed from a dispensing port of the pump per reciprocation of a plunger of the pump. The control circuit in a calibration mode calculates a new reference value based on (i) an input value and (ii) a count of reciprocation of the plunger. The input value corresponds to a measured total mass of the lubricant dispensed from the dispensing port.

A steam turbine valve drive apparatus in an embodiment includes a piston, a cylinder, a bidirectional pump, a servo motor, and a quick closing mechanism. The cylinder houses the piston in an inner space thereof, the inner space being partitioned by the piston into a first hydraulic chamber and a second hydraulic chamber. The quick closing mechanism executes a quick closing operation of closing the steam valve unit more quickly than the closing operation. Here, the quick closing mechanism executes the quick closing operation by feeding the working oil accumulated in an accumulator to the second hydraulic chamber and draining the working oil from the first hydraulic chamber.

An oil injection apparatus includes: a storage unit extruding lubricating oil through an ejection hole formed at a lower end thereof; a discharge unit communicating with the storage through the ejection hole and discharging the lubricating oil outside according to a pumping operation; a plurality of discharge pumps arranged at regular intervals in a circumferential direction of the discharge unit and having respective first ends disposed in the discharge unit; and a driving unit rotating in a direction to sequentially press the first ends of the discharge pumps, which are disposed in the discharge unit, thereby causing the discharge pumps to perform the pumping operation in turn.

The present invention relates to an electric grease barrel pump and, more particularly, to an electric grease barrel pump which is configured to supply an appropriate amount of grease to an attachment connected to a distribution valve by enabling an actuator of the distribution valve to operate in conjunction with and according to a change in the number of stages of a driving means.

A hybrid power type of an automatic grease gun includes a storage tank to store grease, a discharge part to discharge the grease from the storage tank, a drain port to drain out the grease which is discharged from the discharge part, and a power supply part to supply power to the discharge part, to supply power, which is received from moving equipment in connection with the power of the moving equipment, to a rechargeable battery as power to be charged in the rechargeable battery, to first supply the power charged in the rechargeable battery to the discharge, and to automatically and directly supply the power of the moving equipment to the discharge part when the rechargeable battery is fully discharged.

An electric double-rod grease gun is provided, which includes an oil storage tank, a plunger pump, and a driving device; the plunger pump includes a pump body that is provided with a first plunger chamber and a second plunger chamber, both the first plunger chamber and second plunger chamber are respectively provided with a first plunger rod and a second plunger rod; the driving device includes a driving motor, a reduction mechanism, a main transmission gear, a first secondary transmission gear, a second secondary transmission gear, a first eccentric shaft, a second eccentric shaft, a first connection rod, and a second connection rod. The first secondary transmission gear and the second secondary transmission gear are all meshed with the main transmission gear grease.

A lubrication system comprises a lubricant reservoir, a motorized pump, a follower plate, a stationary rod, a movable sleeve, and a flexible connection. The motorized pump is disposed to pump fluid from the lubricant reservoir to lubricant work lines. The follower plate is situated within the lubricant reservoir. The stationary rod has a colored indicator portion. The movable sleeve disposed concentrically about the stationary rod. The flexible connection extends between the follower plate and the stationary colored rod, such that the flexible connection pulls the movable sleeve away from the stationary rod to reveal the colored indicator portion as the follower plate drops towards a bottom of the lubricant reservoir.

A lubricator includes a pump body configured to include a cylinder, an inlet passage, a first outlet passage and a second outlet passage, a piston configured to include an inlet port, a circumferential groove and an inner passage, and inserted into the cylinder, first to fourth check valves provided on the inlet side of the inlet passage, the outlet sides of the first and second outlet passages and the inner passage of the piston, a lubricant containing unit connected to the first check valve, and a piston driving unit configured to reciprocate the piston.

A device of a grease gun is used for delivering a viscous liquid to flow from a reservoir of the viscous liquid to a hose. The device includes a delivery head, two plungers, a cam member, and a drive source configured to drive the cam member to rotate. The delivery head has an outlet port for delivering the viscous liquid into the hose, two bores, and an intake port disposed for receiving the viscous liquid from the reservoir. Each of the plungers is slidably disposed in a corresponding one of the bores. Rotation of the cam member is translated into linear reciprocating motions of the plungers so as to permit the viscous liquid to alternately flow into the bores and then to flow out of the outlet port.