Air draft filtering device for powder drying

Abstract

The invention discloses an air draft filtering device for powder drying, which comprises a body, an inner core and a driving mechanism. The body is internally provided with a cylindrical mounting cavity for mounting the inner core, and the inner core is cylindrical and is matched with the mounting cavity. A connecting pipeline is arranged in the inner core in a radial penetrating mode, and a filter piece is arranged in the connecting pipeline. A first air extracting opening, a second air extracting opening, a first air blowing opening and a second air blowing opening are symmetrically formed in the side wall of the body, and the driving mechanism is arranged outside the body to drive the inner core to rotate. During air extraction, the connecting pipeline is connected with the first air extracting opening and the second air extracting opening; when air is blown, the connecting pipeline is connected with the first air blowing opening and the second air blowing opening. The air blowing openings and the air extracting openings are formed, pipeline switching is conducted through the inner core, an air extracting pipeline of drying equipment is secondarily filtered through the filter piece to prevent powder leakage, meanwhile, collection can be conducted, and follow-up pollution-free treatment is conducted. The connecting mechanism ingeniously adopts screw rod and screw hole matching, and rapid connection of a connecting pipe and a collecting box is achieved.

Description

technical field [0001] The invention relates to a suction filter device for powder drying. Background technique [0002] There are two kinds of degreasing agents, one is liquid and the other is powder; the powder degreasing agent needs to be dehydrated and dried at the end; it is usually dried by a double-cone dryer. Drying efficiency, there will be air extraction equipment to extract the water vapor in the double cone dryer, but it is inevitable that some degreasing agent powder will be extracted at the same time, the existing equipment is equipped with a filter head at the air inlet to prevent the degreasing agent powder from being sucked However, it is inevitable that a part of the finer powder will pass through the filter head and be sucked away; in this way, the powder will be discharged from the other end of the suction device to pollute the air. Contents of the invention [0003] Aiming at the above defects in the prior art, the main purpose of the present inventio...

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