Oil filter for avoiding secondary abrasion of engines

Abstract

The invention discloses an oil filter for avoiding secondary abrasion of engines. The oil filter comprises a shell, a filter element and a filter screen assembly. A chamber separation assembly is arranged in an internal chamber of the shell, and the internal chamber of the shell is divided into a working chamber and a residue storage chamber through the chamber separation assembly. The filter element is arranged in the working chamber, an oil return channel is reserved between the bottom of the filter element and the chamber separation assembly, and a bypass valve is arranged at the bottom of the filter element. An oil outlet and an oil inlet hole are formed in the shell. The filter screen assembly is arranged in the residue storage chamber, and comprises a plurality of filter screen layers which are horizontally arranged. The chamber separation assembly comprises a check ring, a valve plate and a spring assembly. The check ring is fixedly connected to the inner wall of the shell, and a flow pass is formed in the middle of the check ring. The valve plate is used for closing the flow pass, and a one-way overflowing hole is formed in the valve plate. The two ends of the spring assembly are connected with the valve plate and the bottom surface of the residue storage chamber respectively, and the deformation stress of the spring assembly is smaller than the opening pressure of the bypass valve. The oil filter avoids secondary abrasion of engines.

Description

technical field [0001] The invention relates to the technical field of filtration, in particular to an oil filter used for preventing secondary wear of an engine. Background technique [0002] Oil filter, also known as oil grid. It is used to remove impurities such as dust, metal particles, carbon deposits and soot particles in the oil to protect the engine. [0003] The existing oil filter is equipped with a bypass valve at the bottom of the filter element. This is designed to ensure that the engine oil can be used when the engine oil viscosity is high at cold start or the paper filter element is partially or completely blocked. Direct oil flow return channels designed for smooth circulation back to the engine. When the bypass valve is opened under the pressure of the oil pump, the oil circulating back to the engine through the bypass valve will not be filtered by the paper filter element, but will also remove the large particles of impurities that have been filtered out ...

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Problems solved by technology

[0004] Based on the technical problems existing in the above-mentioned background technology, the present invention proposes an oil filter for preventing secondary wear of the engine, to solve the problem that in the prior art, when the bypass valve is opened, the oil will be filtered out by the paper filter element. The problem of large particles of impurities flushing back into the engine

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