Self-circulation cyclone separator

Abstract

The invention belongs to the technical field of atmosphere environmental protection and powder processing, and relates to a cyclone separator with a self-circulation function. According to the invention, a secondary separating cylinder and a screw apparatus are arranged in addition at an exhaust pipe of a common cyclone separator. Relatively high rotation speed is maintained in the gas flow in the exhaust pipe. With the guiding function of the screw apparatus, the gas flow can be forced to rotate, such that secondary separation of dust particles is realized in the secondary separating cylinder. An outlet is provided on the wall of the secondary separating cylinder. Dust obtained in the secondary separation process is pumped out by a blower, and is delivered to a gas inlet of the cyclone separator by using the blower. With the blower, the dust is then delivered into the cyclone separator, such that the circulation of part of the gas flow is formed. With the circulation, leaked dust can be delivered back to the cyclone separator; the separation efficiency can be improved; and the volume of current velocity in a flow field can be controlled through the controlling over a circulation gas volume. The self-circulation cyclone separator comprises: a cone (1), a primary separating cylinder (2), a primary exhausting port (3), the screw apparatus (4), the secondary separating cylinder (5), a circulation gas flow inlet (7), the blower (8), a dust-containing gas flow inlet (10), a circulation gas flow outlet (11), a dust discharging port (12), and the like.

Description

technical field [0001] The invention relates to a separation device for separating dust from air flow by using high-speed rotation of dust-containing gas, and belongs to the technical fields of atmospheric environmental protection and powder treatment. Background technique [0002] The currently widely used cyclone separator has a simple structure and is convenient to manufacture, use and maintain. It uses the rotation of the dust-laden airflow to make the dust particles in the airflow generate a certain inertial centrifugal force, and the rotating dust particles move to the periphery under the action of the inertial centrifugal force, and fall down after hitting the wall of the cylinder to achieve the purpose of dust collection. However, the biggest weakness of the current cyclone separator is its poor separation ability for fine powder, which affects the use of the cyclone separator in more occasions. Contents of the invention [0003] The invention provides a novel cyc...

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Problems solved by technology

However, the biggest weakness of the cyclone separator is the relatively poor separati...

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