Cyclone separation device for preventing dust backflow

Abstract

The invention provides a cyclone separation device for preventing dust backflow. The cyclone separation device comprises a barrel dust collection box with a handle, an oval cyclone separator and a tapered filter, wherein, one face, which is opposite to the handle, of the dust collection box is equipped with a step; a dust collection box cover is arranged below the step; the cyclone separator is connected on the step, one side of the cyclone separator is connected with an air inlet which is vertically bent downwards, and the other side of the cyclone separator is equipped with a horizontal square dust outlet provided with an inner side wall and an outer side wall; the dust outlet is connected with the upper part of the dust collection box; the outer side wall of the dust outlet is formed along the tangent line of the peripheral surface of a position with the maximum diameter on the cyclone separator; and the inner side wall is formed by the mode that a parallel line for translating inwards along the tangent line of the peripheral surface of the cyclone separator to the lower end of the dust outlet inclines outwards 15-20 degrees. The cyclone separation device has the advantages of simple structure, high separation efficiency, reduced leakage of dust in a dust collector, guaranteed suction power and capability of preventing dust backflow, and is convenient in use. The cyclone separation device can be conveniently arranged in the dust collector, and a motor and a reel can be arranged below the cyclone separator, thus saving space.

Description

technical field [0001] The invention belongs to the field of vacuum cleaners, and in particular relates to a cyclone separator which is a single dust separation system, simple in structure, high in separation efficiency, convenient in operation, saves space and prevents dust backflow. Background technique [0002] Vacuum cleaner is a kind of household appliance for indoor cleaning and sanitation, which is used to remove dust from floors, carpets, walls, furniture, clothing and various gaps. Generally speaking, a vacuum cleaner mainly includes a suction device and a suction pipeline. The suction device mainly formed by a motor and a fan is arranged in the body. The suction pipeline includes a suction head and a suction pipe. The air port communicates with the air inlet in the body through the telescopic tube and flexible pipe of the suction pipe. When the vacuum cleaner is running, the motor drives the impeller of the fan to rotate at a high speed, exhausting the air inside ...

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Problems solved by technology

[0011] Existing cyclone separators mostly use such as figure 1 The form of the dust outlet shown is tangent to the shape of the cyclone separator and vertically downward, and in the structure where the dust collection box and the cyclone separator are separated, the contact parts are mostly sealed. The impact of such a dust outlet on the dust collection efficiency It is limited, especially when there is a large amount of dust gas backflow at the dust outlet of the cyclone separator, the collection of dust will cause certain difficulties due to such a structure

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