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The basic principle of lubricating oil system injectors

time:2023-11-25 22:51:36Views:

Basic principle of lubricating oil system - oil injector:


The oil injector is composed of a nozzle, a filter screen, an expansion pipe, and an inlet pipe. In addition to supplying the inlet oil of the centrifugal main oil pump, it also supplies lubricating oil system and sealing oil system oil. The working principle of the oil injector is to use a small amount of lubricating oil as power, suck in a large amount of oil, and supply oil to the lubrication system and main oil pump at a certain pressure. The nozzle of the oil injector is connected to the outlet of the main oil pump that provides power oil. High pressure oil leaves the nozzle at a high speed and enters the expansion pipe, forming a negative pressure at the nozzle mouth. Under the action of the negative pressure, the oil in the oil tank enters the joint chamber of the injector through the filter screen, and together with the ejected injection oil, enters the expansion pipe. The kinetic energy of the oil in the expansion pipe is converted into pressure energy.

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Repair of oil injector:


1. Remove the fastening bolts, remove the nozzle, oil chamber, and expansion pipe of the oil inlet pipe. 2. Clean and inspect the above components. The nozzle and diffusion pipe should be smooth, with no punctures or severe rust, and there should be no debris in the oil chamber. 3. Disassemble and measure the distance between the nozzle and the expansion tube, the diameter of the nozzle mouth, and the diameter of the diffusion tube throat, and make a record to maintain the original dimensions above. 4. After reinstallation, the bolts should be tightened reliably.


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