An oil filter for preventing secondary wear of an engine

Abstract

The invention discloses an engine oil filter for preventing secondary wear of an engine, comprising: an outer casing, a filter element and a filter screen assembly, the inner cavity of the outer casing is provided with a compartment assembly, and the compartment assembly divides the inner cavity of the outer casing into Working chamber and slag storage chamber; the filter element is set in the working chamber, an oil return channel is reserved between the bottom of the filter element and the compartment assembly, and a bypass valve is provided at the bottom of the filter element; an oil outlet, an oil inlet hole; the filter screen assembly is arranged in the slag storage chamber, and the filter screen assembly includes multiple layers of filter screen layers arranged horizontally; the compartment assembly includes a retaining ring, a valve plate and a spring assembly; the retaining ring is fixedly connected with the inner wall of the outer shell, and the retaining ring There is a flow channel in the middle of the valve plate; the valve plate is used to close the flow channel, and the valve plate is provided with a one-way overflow hole; the two ends of the spring assembly are respectively connected with the valve plate and the bottom surface of the slag storage chamber, and the deformation pressure of the spring assembly is less than Cracking pressure of the bypass valve. The invention solves the problem of secondary wear of the engine.

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 ...

AI Technical Summary

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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