Rotary feeder sealed through air curtains

Abstract

The invention provides a rotary feeder sealed through air curtains. The rotary feeder comprises a cambered impeller rotor, a shell body, a pressure limiting valve, a feeding inlet, a discharging outlet, rotating joints, externally-arranged bearings, big end caps, small end caps and conical sleeves. The cambered impeller rotor is of a hollow structure, and is provided with cambered plates evenly distributed along the circumference. An axial clearance taken as an airflow channel for the axial sealing air curtain is arranged between the tops of every two adjacent cambered plates. Annular clearances taken as airflow channels for the end face sealing air curtains are arranged between inner side plates and outer side plates. A hollow shaft, the cambered plates, the inner side plates and the outer side plates are connected into a whole. The cambered impeller rotor is detachably connected through the conical sleeves, studs, nuts, annular gaskets, arc-shaped grooves and the like. Compared with an existing feeder, the closed air curtains formed in the rotary feeder are good in sealing effect. The rotor does not make contact with the inner surface of the shell body, and the rotor is free of abrasion, so that the service life of parts and components is long. The rotor is flexible in operation and convenient to disassemble and clean. The rotary feeder can be taken as a non-contact rotary sealed feeding device which is capable of achieving continuous conveyance of materials.

Description

technical field [0001] The invention relates to a rotary feeder, in particular to a rotary feeder sealed by an air curtain, and belongs to the technical field of material conveying equipment. Background technique [0002] Rotary feeder is also called rotary feeder and rotary feeder. Its internal key component is the rotor with multiple radial blades. The material in the upper bin falls by its own weight and fills the cavity between the blades. The material moves along with the rotor. The rotation is discharged from the lower material port. The rotary feeder is simple in structure and small in size. It is widely used in occasions requiring small pressure difference between the inlet and outlet. It is often used as an air-lock feeding device for closed conveying systems in industries such as tobacco, grain, cement, and road construction. [0003] In order to ensure the flexible operation of the rotor, a certain gap must be left between the rotor and the housing, but materials...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to solve the problems of the existing rotary feeder, such as poor sealing, easy jamming, heavy cleaning and maintenance workload, and low feeding and discharging efficiency, to provide a kind of rotor and the inner surface of the housing that has no abrasion and good sealing performance. The rotary feeder with novel structure sealed by air curtain is easy to disassemble and clean, no jamming, flexible operation and high work efficiency

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