It cleans automatically I-beams moved on the roller conveyor through the chamber.

Principal of operation: Pneumatic cylinders put aside I-beams by loading and putting on the on the roller conveyor centering to the roller conveyor axle locking-on stops. After that the movable stops are lifted by pneumatic cylinders and block possible movements of beams on the roller conveyor. Then, the beams are pulled into the shot blasting chamber where they are cleaned from rust and scales by means of 4 shot-blasters (2 above and 2 below). The cleaned beam is moved on the intermediate roller conveyor to the receiving one where a crane takes it off. The equipment offers the treatment piece by piece, that means the next work-piece enters the chamber after the cleaned product leaves the receiving roller conveyor and the stops of pneumatic cylinders return to the starting position (the stops are up).
The chamber is intended for shot blasting of beams and can be disassembled and includes input, working, output and lower sections. On the working and lower sections there are 2 shot-blasters. The sections have metallic protection which eliminates the walls wear. On the input and output sections there are brushes which prevent the dust and shots to be thrown out of the chamber during operation and fixed stops. The lower section has rollers to transport beams through the chamber.

The system of shot circulation consists of a screw conveyor, an elevator, a separator, a hopper and a shot trap.
The screw conveyor brings the mixture of dust and shots to the elevator and consists of a welded endless screw mounted on bearing supports of the motor with integral gearbox and the housing.
The bucket belt elevator with centrifugal discharge is intended to transport the shot and dust mixture In the separator vertically. Used shots fall through chamber hopper into the elevator.
 The elevator is situated a little bit lower the zero point. The elevators transport the shots transport the shots upwards from the chamber base into the separator. The elevator belt is activated by a motor mounted on the elevator top. At the elevator the buckets are fixed which transport the abrasive material upwards from the chamber base into the separator.
The separator separates the shots from dust and other restrictions. The separator type is pneumo-mechanical. The shot and dust mixture comes into the separator through the bin hopper and is moved by the endless screw along the housing. Then the shot goes to the blowing area where the air stream takes away dust and small particles, and the cleaned shot comes into the hopper. The separator separates the shots from dust and other restrictions (scale, rust, old paint, dirt and so on.). Big restrictions are directed through a hose to a waste container.
 The shot separator catches shots which are brought from the chamber by air and separator through the sucker of dirty air. The shot separator is a hopper with suckers and serves for connection of airways and the shot sleeve. When the air comes into the shot separator the shot falls down and return through the shot sleeve into the system of shot circulation. The hopper provides an uninterrupted duty of shotblasters. The shutters cut off the shot stream. The pneumatic cylinder serves as a power train. In the lower part of the hopper there is a chute with suckers for connection of shot sleeves. There is a net in the system of shot circulation to prevent big restrictions to come in it.
The air ventilation system consists of a filter unit, a radial fan, airways and provides the suction of dirty air out of the working chamber as well its cleansing. The filter unit consists of an upper and a lower sections which are made of rolled ferrous metal. In the upper part there are 8 filter cartridges and a system which shakes the cartridges removing the dust. To make the maintenance convenient there are hatches with removable covers. In the power section there are air collecting hoppers with gates to discharge collected dust. There is an operating floor to service the upper section.