Steel Surface Pretreatment Line

QXY series Steel Pretrement shot blast Machine mainly consist of lading and unloading mechanism, input and output roller converoy, preheating cabinet, blasting machine, paint spray cabinet, drying cabinet, automatic check system, dust collector and eletric control system. The products can be either operated in line or independently used according to users' demands. Whole line f the equipment is controlled by PLC (programmable logic control) system.

Plate transfer arrangement on loading side is an optional to keep plate & waiting for

processing to load on loading roller conveyor.
Loading roller conveyor to convey the plate towards the Pre-heat chamber. The plate is kept

on the top side of the roller conveyor.
Pre-heat treatment chamber to electric operated convection heating oven with both open ends

to facilitate entry & exist of plate suitable for continuous operation.
On the blast chamber, numbers of blast wheel stations are located strategically around the

cabinet, which bombards shots on the passing plate at preselected travel speed for

homogeneously blasting on all side.
In the exit vestibule, the shots lying on the top surface of plate are wiped out to the

hopper by a V-type wiper arrangement.
The next chamber is equipped with double rotary type brush off arrangement to brush off

shots from the wide top surface of a plate to the hopper for further recycled in the system.
In blow off chamber, the two blowers are constantly blow-off shots accumulated on the top of

blasted plate & one blower is provided to blow off dust by from duly shot blasted plate

surface & finally the blow off dust is sucked by the suction nozzles connected to the inlet

of dust collector.
The shots recycling system consists of a long hopper with a long screw conveyor, which

transfers shots to cross screw conveyor installed in a pit. The cross screw conveyor directs

the shots flow to the boot section of elevator, which elevates shots from lower recycling

system to upper recycling system consists of upper screw conveyor, rotary screen & shots

storage hopper mounted on operator's platform. The shots are delivered to blast wheels

through Soundabrator valves.
The Reverse air jet self cleaning cartridge type filter dust collector is connected with

blast, brush & blow off chambers through proper shortest ducts.
The intermediate conveyor of approximately 2.75 meters long is provided for visualized

inspection the blasted surface of the plate
The online Paint spray booth consists of painting chamber with air inlets on both ends,

inlet air filters, reciprocating paining guns on top & bottom sides, paint trap filters,

axial flow fan, electric motor, duct and canopy etc.
The baking chamber is to back the paint on both sides of the primed surface of plate. The

plate travels on the slat conveyor, which conveys the plate at preselected suitable speed

for sufficient time of baking as well as to avoid the damage the painted surface of bottom

side of the plate.