Bearing automatic lubrication and waste grease collection system

Abstract

The invention relates to a bearing automatic lubrication and waste grease collection system which comprises a pressure reduction flow increase device. The pressure reduction flow increase device comprises a high-pressure oil cavity, a low-pressure oil cavity and a piston rod. The high-pressure oil cavity of the pressure reduction flow increase device is connected with one grease outlet of a solenoid valve I. A grease inlet of the solenoid valve I is connected with an oil outlet of an electric grease pump. Meanwhile, the high-pressure oil cavity of the pressure reduction flow increase device isconnected with an oil tank of the electric grease pump through a solenoid valve II. A transmission medium adopted in an oil pipe, connected with an oil inlet of a grease absorber, of the low-pressureoil cavity of the pressure reduction flow increase device is oil liquid in a liquid shape. According to the bearing automatic lubrication and waste grease collection system, due to the fact that thepressure reduction flow increase device is additionally arranged, and therefore the oil liquid in the liquid shape can be utilized for driving the grease absorber, and high-pressure and small-flow grease pumped by the electric grease pump is converted into the low-pressure and large-flow oil liquid in the liquid shape so as to push the grease absorber to work; and compared with the manner of adopting an independent hydraulic pump for drive, the cost is saved, and the leakage risk is reduced.

Description

technical field [0001] The invention belongs to the technical field of lubrication, in particular to a bearing automatic lubrication and waste grease collection system. technical background [0002] In the wind power and construction machinery industries, the bearings used in the equipment are generally lubricated with grease. Grease lubrication can effectively avoid the risk of bearing leakage, but the waste grease in the bearings is difficult to discharge, which has become a problem in the industry. Aiming at the problem of degreasing grease-lubricated bearings, the current common practice is to design multiple grease discharge holes on the bearing and install an oil collecting bottle to passively collect waste grease. When the oil collecting bottle is full, it is necessary to remove the waste grease from the oil collecting bottle in time. Take out or directly replace the oil collection bottle, but from the actual application effect, because the pressure of the waste greas...

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Problems solved by technology

[0002] In the wind power and construction machinery industries, the bearings used in the equipment are generally lubricated with grease. Grease lubrication can effectively avoid the risk of bearing leakage, but the waste grease in the bearings is difficult to discharge, which has become a problem in the industry.

Aiming at the problem of degreasing grease-lubricated bearings, the current common practice is to design multiple grease discharge holes on the bearing and install an oil collecting bottle to passively collect waste grease. When the oil collecting bottle is full, it is necessary to remove the waste grease from the oil collecting bottle in time. Take out or directly replace the oil collection bottle, but from the actual application effect, because the pressure of the waste grease discharged from the bearing is very small, the grease discharge hole is easy to block, it is difficult to collect the bearing waste grease by the passive collection method of the oil collection bottle

In recent years, the active waste oil collection technology of bearings has been proposed and applied. At present, the following two methods are more commonly used: one is to use an independent electric hydraulic pump or grease pump to drive a fat suction device for liposuction, and this method An additional electric hydraulic pump or grease pump is required, which not only increases the cost, but also has low efficiency and poor adaptability in low temperature environments if a grease pump is used; while a hydraulic pump has higher efficiency, but the hydraulic pump increases the risk of leakage. At the same time, the hydraulic pump is not suitable for installation in rotating parts such as fan hubs.

Another way to actively collect waste oil for bearings is to use the electric grease pump of the bearing automatic lubrication system as the power source to drive the grease sucker to suck and drain the bearings. The volume is small, the efficiency is low, and there are problems such as difficulty in pressure relief under low temperature environment

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