Automatic Powder Coating Line With Quick Color Changing And Powder Recycling System For Sale

Pre-Treatment For Spraying

Spray System Design Description:

The overall spray material is made of 304 stainless steel, which offers strong rust resistance and corrosion resistance.

Base plate: All base-plate connections must be fully welded to ensure structural strength while minimizing the risk of water leakage.

Side panels: The side panels are fabricated by bending sheet material, which not only simplifies installation but also ensures the overall structural rigidity of the spray channel.

Roof panel: The roof panel is made of δ1.0 stainless steel sheet, which reduces the weight of the roof while ensuring the strength of the roof surface; the price is relatively moderate.

Water barrier plate: The design of the water barrier plate effectively reduces the cross-contamination of chemical solutions between different process stages, thereby lowering the amount of chemical solution required and reducing production costs for customers.

Nozzle: Clamp-type spray head; its simple installation method ensures effective spraying and enables rapid replacement.

Pre-treatment process: degreasing → water washing 1 → ceramicization → water washing 2

Water tank: The entire water tank is constructed from welded 304 stainless steel sheets, making it sturdy and reliable with strong rust and corrosion resistance; after the sheets undergo a brushed finish, they achieve an elegant and aesthetically pleasing appearance. A protective film can be applied to shield the sheets from minor scratches, preserving their visual appeal while reducing the risk of impact and scuffing during transport.

The concealed bottom drain design is aesthetically pleasing while ensuring that turbid water is completely discharged when cleaning the water tank, thereby significantly reducing the difficulty and time required for personnel to clean the tank.

Overflow outlet: The overflow outlet is designed primarily to prevent the water level in the tank from becoming too high, thereby avoiding overflow from the tank into the workshop when the water volume exceeds the capacity. This protects the workshop environment and also reduces the workload of personnel.

specifications

Name: Water tank	Specifications: 3000/2000*1220*870	Quantity: 4 sets
Material: brushed 304 stainless steel panel
Water tank body: δ1.5 304 stainless steel
Water tank cover: δ1.0 304 stainless steel
Filtration: stainless steel sieve
Drainage outlet: bottom-set type	Size: φ75
Overflow port: φ75

spray

Sprinkler system: L39000 × W1600 × H3900 mm (subject to the final approved design)
Spray framework: 8# square channel, 40×80 square channel, δ1.8 mm
Surface treatment: powder coating
Base plate: δ1.5 stainless steel 304
Side panel: δ1.2 stainless steel 304
Roof: δ1.0 304 stainless steel
Water barrier plate: δ1.0 304 stainless steel
Drain outlet and inlet/outlet plates: δ1.2 stainless steel 304
Imported stairs: patterned panel welding	Quantity: 1 set
Pump: 4 sets (vertical submersible pumps) Brand: China
Acid-and alkali-resistant: Yes
Sprinkler fittings:
Pipe fitting material: PVC
Elbows and reducers: PVC material	Internal branch: 1 cun
Spray head: clip-on nozzle (fan-shaped)	Specification: 1 inch

Oven

Introduction: The oven employs a bridge-type design, which saves workshop space; it is powered by a gas burner or oil burner (dual-purpose for both preparation and operation). A fan draws air from inside the oven and circulates it through the combustion chamber, thereby raising the internal temperature. This internal circulation heating method significantly improves energy efficiency, while also ensuring uniform oven temperature and increasing the product yield rate.

Exhaust gas collection hood: The exhaust gas collection hood is constructed from galvanized steel sheet and includes one set of inlet and outlet openings for the furnace (excluding the ductwork).

Combustion chamber: The combustion chamber features an inner liner made of high-temperature-resistant stainless steel, with a 150 mm thick insulation layer that provides exceptional thermal insulation while ensuring long-term durability. The image above is

for reference only.

Drying Oven Appendix

Note: The drying oven does not have a heating device; heat transfer from the curing oven causes the temperature to rise. The temperature is uncontrolled and remains at approximately 140 °C.

Appendix: Curing Furnace

Note: The waste gas emitted by the powder curing furnace is the responsibility of the customer; this equipment does not include a waste gas and wastewater treatment system.

PP Board Large Cyclone Powder Room

Introduction and Design Features

Efficient and rapid color switching;

Continuous automatic cleaning at the bottom of the spray chamber;

The spray chamber base integrates a gas storage pipeline;

During the cleaning process, there is no need to enter the spray chamber;

Segmented bottom cleaning, with solenoid valve control for dual-channel output;

Extraction configurations: flat-bottom sequential air knives, central-bottom extraction, and dedicated extraction slots at the hand-cleaning platform;

The automatic base air cleaning system minimizes the amount of powder remaining in the process flow, thereby enhancing system efficiency;

The verification single cyclone chamber is connected to the powder spraying room piping, while the exhaust duct equipped with a cleaning door reduces the risk of powder contamination;

The air knife uses a small amount of compressed air to generate a continuous curtain-like airflow; it delivers high airflow intensity, consumes less energy, and offers higher efficiency;

The air extraction and distribution system ensures uniform wind speed distribution throughout the bottom air extraction channel, thereby maximizing the recovery of over-sprayed powder and minimizing powder accumulation on the bottom plate;

The gas knife can be subjected to pulse-based reverse blowing, which blows the powder accumulated at the bottom of the powder spraying chamber into the central recovery trough for reuse, thereby maximizing powder utilization and minimizing color-change time;

The air knife operates on the Coanda effect: compressed air is used to generate airflow through a specially designed air chamber, which can divert 20–30 times the volume of ambient air, thereby effectively reducing the consumption of compressed air.

Attached Table for Powder Coating Room

Powder coating room: L6500 × W2200 × H3300 mm; subject to the final approved design
Overall Building Panel Material: PP Board	Screen protector application
PP panels: wall panels with thicknesses of 10 mm, 6 mm, and 12 mm, fabricated by assembly and welding of engineering plastics
Powder room base: PP board material	Automatic flap design
Automatic cleaning device	air knife
Import/Export Gate	One set each
Artificial position	Install platforms on both the import and export sides
Fit muzzle	5 slots per face (1 slot reserved)
lighting:LED
Recycling system: large cyclone, secondary recovery
Secondary Recovery: Quantity: 1 set
Filter element: membrane-coated filter element	Quantity: 24 units/12 groups
Fan: Type A	Power: 37 kW
Big Whirlwind – Quantity: 1 set
Diameter: 1300 mm; Height: 5650 mm	Configuration: Bottom recovery hopper
Powder Supply Center
Cabinet material: 2.5 t steel sheet	Powder coating treatment
Powder bins: 2 sets	PP board (1 spare set)
Display panel: Touch screen
Nozzle cleaning function: high-pressure air	Vibrating Screen: Configuration
Ductwork: equipped with elbows, flanges, and reducers (powder-coated finish)

Delivery System

The conveying equipment primarily consists of an electric drive unit, a counterweight tensioning mechanism, chains, tracks, curved tracks, telescopic tracks, inspection tracks, supports, an electrical control system, and an automatic overload protection device, among other components.

A Type 250 heavy-duty suspended conveying chain is used, with a single-point lifting capacity of 50 kg; one set of an electric drive unit (Vmax ≈ 0–3 m/min) is installed. The tensioning device is equipped with a displacement-limit protection switch, ensuring smooth operation of the chain throughout the entire line. Emergency stop switches are installed along the entire working area, and the drive system is provided with dual mechanical and electrical safety protection;

Chain rail support frame: constructed from 100×100 mm carbon steel square tubing, finished with spray painting.

Areas subject to significant wear: elbows, lifting points, track elbows, and the track assembly at lifting points shall undergo carburizing treatment to increase hardness in these areas, thereby enhancing wear resistance and extending service life.

Transport Schedule

Automatic Powder Spraying Line