Electrostatic spraying device and method for supersized plate-shaped steel structure

Abstract

The invention discloses an electrostatic spraying device and method for a supersized plate-shaped steel structure (large plate). The electrostatic spraying device comprises a spraying vehicle for placement of the large plate and a powder spraying room, wherein liftable jacking rods are fixed on the spraying vehicle; the large plate is placed on the jacking rods; a powder spraying gun is placed onthe spraying vehicle and can be used for spraying the bottom surface of the large plate; and a top powder-spraying gun is fixed at the top of the powder spraying room and can be used for spraying thetop surface of the large plate. The electrostatic spraying device further comprises a transport vehicle and a baking room, wherein two vertical racks are fixed on the transport vehicle; and a plurality of support arms are arranged on the inner side of each vertical rack at intervals and used for placement of the sprayed large plate. According to the electrostatic spraying device, the large plate is placed horizontally on the spraying vehicle, the movable powder spraying gun is arranged on the spraying vehicle and the top powder-spraying gun is arranged at the top of the powder spraying room, so that the electrostatic spraying device can spray powder to the large plate, and is low in cost and high in spraying efficiency; and baking room is an enclosed space, so that hot air in the baking room is not prone to loss, the heat loss is small, the fuel waste is less and the cost is reduced.

Description

Technical field [0001] The invention relates to an electrostatic spraying equipment, in particular to an electrostatic spraying equipment and a spraying method for an ultra-large plate-shaped steel structure. Background technique [0002] Large-size plate steel structures (hereinafter referred to as large slabs) basically use chain overhead rails to hang the large slabs vertically on the chain, and automatically move into the powder room to spray powder, and then enter the high-temperature furnace for baking to melt Formed into organic powder. Due to the heavy weight of the slab, the requirements for chains and guide rails are high, and the requirements for the structural strength of the elevated rail are also high, and the equipment cost is increased. In addition, the large slab absorbs a lot of heat, increases the temperature slowly, and travels very slowly in the furnace, which seriously affects the production efficiency. In addition, the way of guide chain drive requires th...

AI Technical Summary

Problems solved by technology

Due to the heavy weight of the large slab, the requirements for chains and guide rails are high, and the requirements for the structural strength of the elevated rail are also high, which increases the cost of equipment

Moreover, the large plate absorbs a lot of heat, the temperature rises slowly, and the traveling speed in the kiln is very slow, which seriously affects the production efficiency

In addition, the way of guide rail chain transmission requires that the entrance and exit of the kiln are open, the hot air in the kiln is easy to lose, the heat loss is too large, and the fuel waste is too much

In addition, the chain-type automatic electrostatic spraying equipment and spraying method are closed-loop operation mode, and the turning radius of large objects is large, resulting in an increase in the area occupied by the equipment and spraying method

In addition, it is difficult to increase the thickness of the anti-corrosion layer on one side of the steel plate

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