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2019

Three major tanks for automotive coating pre-treatment equipment

Author：

Chuangzhi Coating

There are three large tanks in the automotive pre-treatment equipment, which are dip tank, spray tank and transfer tank. Next, I will introduce the shapes and structures of these three major grooves, as well as the matters needing attention when designing each groove.

1. Dipping tank

The shape of the dipping tank is generally ship-shaped or rectangular, which is determined by the conveying method. Generally, continuous production lines use boat-shaped grooves, but RODIP and SHUTTLE dipping tanks can also be rectangular; rectangular grooves are generally used in intermittent production lines. Dipping tank structure: section steel + stainless steel plate or section steel + carbon steel plate + anti-corrosion layer. Notes on designing the tank body:
(1) On the premise of satisfying the process conditions and the passability, the volume of the tank should be reduced as much as possible to shorten the update period of the tank liquid and the funding for the allocation of the tank. The heating tank can reduce the heat capacity and heating time of the tank liquid, Consumption of thermal energy.
(2) The cross-sectional shape of the tank should be adapted to the flow direction of the tank liquid to enhance the stirring effect.
(3) The bottom plate of the tank should be inclined towards the end or the middle of the tank, and the bottom of the bottom of the tank should be provided with a tank liquid drain.
(4) Try to avoid dead angles in the grooves. The corners should be transitioned with arcs or inclined plates. The radius of the transitional arc should be greater than 150mm.
(5) A secondary tank should be set at the end or middle of the tank. A stainless steel double-layer filter should be set between the secondary tank and the main tank. The suction port of the pump should be set behind the double-layer filter in the attached tank to ensure Do not suck large foreign objects into the pump.
(6) The bottom of the auxiliary tank should be more than 200-300mm higher than the bottom of the main tank. The sharp corners are transitioned by large arcs, and the solution in the auxiliary tank can be completely drained when it is discharged.
2. Spray tank
The shape of the spray trough is generally rectangular. The structure of the spray trough: profile steel + stainless steel plate or profile steel + carbon steel plate + anticorrosive layer. Notes on designing the tank body:
(1) The volume of the spray tank should be determined according to the flow rate of the pump. The volume of the spray tank should not be less than 2.5 times the flow rate of the pump per minute.
(2) The bottom plate of the tank should also be inclined, and the bottom of the bottom of the tank should be provided with a tank liquid discharge port.
(3) A secondary tank should also be set on the side of the tank, and a stainless steel double-layer filter screen should be set between the secondary tank and the main tank. The suction port of the pump should be set behind the double-layer filter screen in the attached tank to ensure that Inhale large foreign objects into the pump.
(4) The bottom of the auxiliary tank should be more than 200-300mm higher than the bottom of the main tank. The sharp corners are transitioned with large arcs, and the solution in the auxiliary tank can be completely drained when discharged.
3. Transfer tank

The transfer tank is used to store tank fluid during cleaning and maintenance of degreasing and phosphating tanks. Its shape depends on the place where it is placed, and it can be rectangular, tanker or cylindrical. The capacity of the transfer tank should be able to hold the entire tank liquid with sufficient margin. The material of the transfer tank can be: profile steel + stainless steel plate or profile steel + carbon steel plate + anticorrosive layer.

The above is the relevant content of "Three tanks for automotive coating pre-treatment equipment". The information is provided by Guangdong Chuangzhi, a 25-year-old coating production line manufacturer.

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