| 摘要 |
PURPOSE:To effectively utilize grease by intermittently driving a pump when the lubricating agent pressure in a transport pipe which is detected by a pressure gauge is within a set range, while continuously driving the pump when the lubricating agent pressure becomes less than the set range. CONSTITUTION:When the measurement value of a pressure gauge 36 in a transport pipe 33 is within a range between the upper and lower limits, a controller 40 drives a motor 32 intermittently, and a pump 31 supplies the grease in a cylinder 37 in every set time through the transport pipe 33 into an oil seal 10. When the grease in the special oil seal 10 leaks and is lost, the pressure in the transport pipe 33 lowers sharply. In this case, the grease in an accumulator 34 is liberated to prevent the sharp lowering of pressure, and when the pressure in the transport pipe 33 becomes less than the set lower limit, the control circuit 40 continuously operates the motor 32, and the pump 31 supplies the grease in the quantity free from the overflow from the special oil seal 10 into the oil seal 10 and the accumulator 34. Accordingly, the consumption of grease is avoided, and the abrasion of a sealing member can be prevented. |
