Wood-based bevel-gear-shaped diesel vehicle tail gas filter

Abstract

The invention discloses a wood-based bevel-gear-shaped diesel engine tail gas filter with wood fibers being a filtration material. The filter is composed of two parts of a filtering body structure and a filtering chamber structure. The filtering body structure comprises a front sealing cover, a rear sealing cover, an inner supporting object, an outer fixing net sleeve and a filter element; and the filtering chamber structure comprises a blade flow guiding cap, flow guiding blades and a filtering cavity. When the flow guiding effect of the blade flow guiding cap and the flow guiding blades is performed on tail gas, the tail gas enters an inner cavity of a filtering body from the bevel-gear-shaped outer surface of the filtering body; and then the tail gas flows out of the inner cavity of the filtering body and then is discharged into atmosphere from a gas outlet. In the process, the tail gas is fully filtered by the filter element, and therefore the tail gas discharged into air does not pollute air to the maximum extent. The device is high in filtering efficiency, the surface of the filter element can make full contact with the tail gas, material taking is convenient, the service life is long, the replacing period is long, the device is green and environment-friendly, the requirement for the diesel quality is low, the manufacturability is high, and the diesel vehicle tail gas can be effectively filtered.

Description

Technical field: [0001] The present invention relates to diesel engine exhaust PM (soot particle) filtering device, specifically a kind of exhaust filter with bevel gear-shaped filter body with filter pre-filter guide device and wood fiber as filter material. Background technique: [0002] The filter body is an important part of the PM filter device for diesel vehicles. Its filtration efficiency and service life directly affect the exhaust emissions of diesel vehicles, and then affect the atmospheric environment in our country. At present, the filter element structure used in common diesel vehicle exhaust PM filter devices is a solid cylinder, and its materials are mostly cordierite, honeycomb ceramics, silicon carbide and other materials with high prices and complicated manufacturing processes. The advantages of this traditional structure: stable structure, good heat resistance, and high strength; disadvantages: high cost, does not match with diesel in my country, and long-...

AI Technical Summary

Problems solved by technology

At present, the filter element structure used in common diesel vehicle exhaust PM filter devices is a solid cylinder, and its materials are mostly cordierite, honeycomb ceramics, silicon carbide and other materials with high prices and complicated manufacturing processes.

Advantages of this traditional structure: stable structure, good heat resistance, high strength; Disadvantages: high cost, does not match with diesel in my country, and long-term use affects the performance of automobile engines

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