1. Manual oil feeding device
The operator USES the oil pot or oil gun to lubricate the oil hole of the oil point, oil nozzle and oil cup refueling is called manual oil lubrication, mainly used for low speed, light load and intermittent work of the sliding surface, open gear, chain and other single friction pair.The quantity of refueling depends on the feeling and experience of the workers.
Drop oil for lubrication
Drip lubrication mainly USES the oil cup to feed oil to the lubrication point.Commonly used oil cup has: needle valve type oil cup, pressure action drop oil cup, etc.Oil cup multi-purpose aluminum or aluminum alloy and other light metal frame, the glass wall of the inspection hole multi-purpose transparent plastic or glass manufacturing, in order to observe its internal oil level.
1) needle valve type oil cup
The amount of oil in the oil cup is controlled by the needle valve. The level of oil in the oil cup can directly affect the amount of oil dropped through the annular clearance of the needle valve.
2) pressure drop oil cup
The bottom of the oil cup has a needle valve whose stem extends through the operating cylinder on the oil cup to connect the regulating nut externally.The valve up and down by the compressor exhaust through the spring pressure of the piston to control, and can be used to adjust the stem of the nuts to adjust the amount of oil in the oil cup.
3) skip needle lube oil cup
This kind of lube oil cup is generally installed directly on the friction pair, through the friction pair slight vertical vibration produces the pumping effect, make the oil hole jump needle drops and lubrication friction pair.
4) thermal expansion oil cup
The oil cup is controlled by temperature changes in the friction pair.The temperature change in the friction pair is transmitted through the metal tube of the oil cup to the upper chamber of the oil cup and causes the air inside to expand or contract.When the air expands, the pressure in the cavity above the oil cup increases, forcing a small amount of lubricating oil to flow out of the oil cup and into the friction pair.And when the air contracts, the oil flow stops, and so continues to move.This type of oil cup is not suitable for some applications that require first filling and then starting friction pairs.
5) oil cup with continuous pressing
This continuous pressure cup ensures an automatic and uniform oil supply due to the constant oil pressure of the reservoir below.
6) evenly drop the oil into the oil cup
Lubricating oil from the top of the oil reservoir through the valve connected to the floating on the bottom of the oil reservoir, the amount of oil sent to the friction pair by the needle valve to regulate.
7) piston type drip oil cup
The amount of oil it drips can be adjusted by a lever on the cup.
3. Oil rope and pad lubrication
The lubrication method of oil rope and oil pad is to soak oil rope, felt pad and so on in the lubricating oil, the application of siphon and capillary action oil absorption.The viscosity of the oil used should be low.Oil rope and oil pad have a certain filtering effect, can keep the oil clean.
Pad lubrication is generally applied to oiling difficult or not easy to access the bearing, but the lubrication of the surface speed should not be too high.The oil pad sucks in the lubricating oil from the special oil storage tank and supplies the journal in contact with it.Linoleum is mainly used in the manufacture of coarse felt, should be regularly cleaned and dried when used, and then reassembled for use.
4. Oil ring or chain lubrication
Oil ring or oil chain lubrication can only be used for the horizontal installation of the shaft, in the shaft hanging an oil ring, the lower part of the ring immersed in the oil pool, the use of friction when the shaft rotation, the oil ring with the rotation, the lubricating oil to the journal, and then in the journal surface flow to each lubrication point.Need to pay attention to the rotation shaft should be no impact vibration, speed is not easy to be too high.
5. Oil bath and splash lubrication
Oil bath and splash lubrication are mainly used for closed gearboxes, chains and internal combustion engines.Generally, the oil is taken to a nearby lubrication point from a specially designed oil tank by means of a machine rotating at a high speed (no higher than 12.5m/s).Sometimes a wheel with oil is placed on the shaft to carry the oil to the journal.Splash lubrication oil tank shall be equipped with oil standard, the oil level depth of the tank shall be kept at a minimum of 2 ~ 3 submerged tooth heights of the wheel.In order to facilitate heat dissipation, it is best to set vent holes on the closed gear box to strengthen the convection of air inside and outside the box.
6. Pressure forced lubrication
Pressure forced lubrication is to set up a small lubricating pump in the equipment through the transmission parts or motor drive, from the oil pool to the lubricating oil point.Oil supply is intermittent, it can be used for separate lubrication, or several pumps together.
When forced lubrication, lubricating oil with the equipment on, stop and automatically send, stop.The flow of oil is adjusted by the plunger stroke from a few drops per second to one drop per few minutes.The oil pressure range is 0.1 ~ 4MPa.To keep the oil clean, the tank should be deep enough to prevent sediment from being sucked into the tank.
7. Spray lubrication
Oil injection lubrication refers to the lubricating oil and a certain pressure of compressed air in the injection valve after mixing to the lubrication point of the lubrication.Lubrication requirements for gears lubricating oil is transferred from the gear's biting direction to the meshing clearance for lubrication under direct pressure.For the bidirectional rotation gear, it is necessary to install oil injection hole tube on both sides of the gear.In worm gear drive, oil injection shall be carried out from the side where the worm screw begins to engage with the worm gear.