Oil centrifugal anti-leakage fine filter and its engine

Abstract

The invention discloses a centrifugal leak-proof fine filter for engine oil and an engine with the centrifugal leak-proof fine filter for the engine oil. The centrifugal leak-proof fine filter comprises a fine filter installation base and a sealing cover, wherein the fine filter installation base is used for being installed at the end of a crankshaft and fixedly matched with the end of the crankshaft in the circumferential direction, and a fine filter cavity is formed by the sealing cover and the fine filter installation base jointly. A centrifugal separating plate is located in the fine filter cavity and connected with the fine filter installation base in a sealed mode in the circumferential direction. The sealing cover is provided with an oil inlet pipe joint, and the oil inlet pipe joint penetrates into an oil outlet channel of a crank case cover in a rotary-fit and sealed-communication mode. By means of the centrifugal leak-proof fine filter, all the advantages of an existing fine filter are kept; the structure that the oil inlet pipe joint is matched with the oil outlet channel of the crank case cover is adopted, existing end face sealing is changed into axial sealing, the machining manufacturability is good, lubricating oil leakage caused by plane machining errors is avoided, and lubricating oil leakage is accordingly avoided in the separating purification process; in addition, the machining technology is simplified, and normal running of the engine is guaranteed.

Description

technical field [0001] The invention relates to an accessory part of an engine and its engine, in particular to a lubricating oil filtering device and its engine. Background technique [0002] The centrifugal fine filter is an important equipment for the engine to purify the lubricating oil and ensure the normal operation of each friction pair. The centrifugal fine filter is generally driven by the rotation of the crankshaft and uses the centrifugal force of the centrifugal guide part to purify the lubricating oil, and the effect is more obvious. The centrifugal fine filter generally includes a shell and a centrifugal guide part located in the shell. After the lubricating oil enters the shell, it flows along the centrifugal guide part through centrifugal force. The solid particles with high density are located at the farthest end of the centrifugal diameter, near the center That is clean lubricating oil. [0003] In the prior art, in order to ensure a good separation and p...

AI Technical Summary

Problems solved by technology

However, since the sealing cover of the fine filter is fitted with an oil passage pipe, and the oil passage pipe is pressed and sealed with the end face of the crankcase cover by means of a spring, this sealing structure has high requirements on the machining accuracy of the end face. If the flatness reaches If the requirements are not met, it will cause the leakage of lubricating oil, which will lead to insufficient lubrication of the lubricating parts, and accidents will occur.

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