Primary air filter

Abstract

The invention relates to a primary air filter. The primary air filter comprises a shell (1), a shell cover (2) and a filter body arranged in an inner cavity of the shell (1). The shell cover (2) is connected to the shell (1), the shell (1) is provided with air inlet holes (3) and air outlet holes (4), and the air inlet holes (3) communicate with the air outlet holes (4) through the filter body. The primary air filter is characterized in that the air inlet holes (3) are located in the lower portion of the filter body, the air outlet holes (4) are located in the upper portion of the filter body,the filter body comprises a box body (5) and solid particles (6) with which an inner cavity of the box body (5) is filled, and the upper wall and the lower wall of the box body (5) are of a net-shaped structure. The primary air filter has the beneficial effects that large dust, sand dust and other dirt contained in air can be filtered out, accordingly, primary filtering of air is achieved, the work load of a rear-level air filter can be greatly reduced, and the service life of the rear-level air filter is greatly prolonged.

Description

technical field [0001] The invention relates to a filter, in particular to a primary air filter. Background technique [0002] The air filter is mainly set in the engine intake system. It is an assembly composed of one or several clean air filter components. Its main function is to filter out harmful impurities in the air that will enter the cylinder to reduce the air intake of the cylinder. , Early wear of pistons, piston rings, valves and valve seats. At present, in order to ensure that the engine has sufficient air intake, existing vehicles such as automobiles generally communicate with the air inlet between the air filter and the air intake grille at the front end of the engine room of the vehicle, so that when the vehicle is running In this process, the air outside the vehicle can quickly enter the engine. However, due to the poor air quality in some parts of the country, especially in northern China, the air contains a large amount of dust and sand, so when the air o...

AI Technical Summary

Problems solved by technology

However, due to the poor air quality in some parts of the country, especially in northern China, the air contains a large amount of dust and sand, so when the air outside the vehicle directly enters the air filter through the bleed pipe, it will greatly increase the air quality. The working load of the filter makes the filter element of the air filter easy to become dirty, and the dirty filter element will often lead to insufficient air intake of the engine, resulting in incomplete combustion of fuel, which will cause the engine to work unstable, and the engine will fail. The power drops and the fuel consumption increases. Therefore, in order to ensure the normal operation of the engine, the filter element of the air filter can only be replaced. This not only greatly increases the cost of the vehicle, but also undoubtedly greatly reduces the cost of the air filter element. service life

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