Air inlet and dust discharge device, air filter and micro-cultivator

Abstract

The invention discloses an air inlet and dust discharge device for an air filter, the air filter with the air inlet and dust discharge device and a micro-cultivator with the air filter. The air inletand dust discharge device for the air filter comprises an upper shell and a waterproof cover, wherein the upper shell is of a column-shaped structure with an opening in the upper end, the waterproof cover covers the opening, a dust discharging opening is formed at the position, close to the opening in the upper shell, of the side wall of the upper shell, a plurality of air inlets are formed in thebottom surface of the upper shell, are uniformly distributed in an annular array along the outer edge of the circumference of the bottom surface, and are provided with flow guide plates, the flow guide plates are inclined towards the interior of the upper shell in the circumferential direction, acute angles are formed between the flow guide plates and the bottom surface of the upper shell, and the inclination angles of all the flow guide plates are the same. Air with dust enters from the air inlets and is guided by the flow guide plates to form cyclone to rotationally rise in the upper shell,the dust can be discharged out of the upper shell when rotating to the dust discharging opening, the air subjected to primary dust discharging enters a filter device, so that the pressure of the filter device is reduced, and the performance of the air filter is further improved.

Description

technical field [0001] The present invention relates to the technical field of tillage machine air filter manufacture, more specifically to an air intake dust discharge device for an air filter, an air filter with the air intake dust discharge device and an air filter with the air intake dust discharge device. tiller. Background technique [0002] Chinese invention patent "an oil-bath air filter and micro-tiller", the patent number is 201810739421.4 proposes an oil-bath air filter for a micro-tiller, and its air intake device only has the function of air intake. All rely on the filter device in the lower casing for filtering. For micro tillage machines, most of the environment where it is located is dusty, and the filter capacity of the filter device is limited, which cannot better meet the actual work requirements. Under normal circumstances, there are still a lot of early wear and tear of the engine, which shortens the service life, causes serious losses, and significantl...

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Problems solved by technology

[0002] Chinese invention patent "an oil-bath air filter and micro-tiller", the patent number is 201810739421.4 proposes an oil-bath air filter for a micro-tiller, and its air intake device only has the function of air intake. All rely on the filter device in the lower casing for filtering. For micro tillage machines, most of the environment where it is located is dusty, and the filter capacity of the filter device is limited, which cannot better meet the actual work requirements. There are still a lot of early wear and tear of the engine, which shortens the service life, causes serious losses, and significantly increases the cost of agricultural planting

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