Pumpless water curtain spray booth Baidu Encyclopedia

The pumpless water curtain spray booth is a high-performance paint mist purification equipment developed based on the most advanced spray booth equipment at home and abroad. The spray system without a water pump directly uses the suction force of the exhaust fan to lift the water in the water tank to a certain height, thereby forming a circulating water curtain. It is an advanced technology spray paint mist purification treatment equipment used for treating organic exhaust gas and paint mist emitted during spraying.

Introduction to Pumpless Water Curtain Spray Booth: The pumpless water curtain spray booth is a high-performance paint mist purification equipment developed based on the most advanced spray booth equipment at home and abroad. The spray system without a water pump directly uses the suction force of the exhaust fan to lift the water in the water tank to a certain height, thereby forming a circulating water curtain. It is an advanced technology spray paint mist purification treatment equipment used for treating organic exhaust gas and paint mist emitted during spraying.

Technical Principles of Pumpless Water Curtain Spray Booth: In the air containing paint mist passing through the front water curtain, the first interception occurs, then it enters the "boiling stirring channel". When the airflow skims over the surface of the water below the channel, due to the high speed, the water is brought into the channel. After the airflow reaches the top of the channel, due to the reduction in flow velocity, some of the lifted water will fall back below the channel opening due to gravity. This creates a collision with the water being continuously lifted, thus forming a boiling state. The water droplets in the boiling state mix and stir thoroughly with the airflow, and the particles will be completely washed into the water, thereby achieving the purpose of cleaning and purifying the paint mist particles. Some of the lifted water follows the airflow into the air collection box. After passing through the分流grating, the air and water are separated. The purified air is discharged outdoors by the exhaust fan, and the separated water settles at the bottom of the air collection box, flows into the overflow trough, and forms a circulating water curtain on the water curtain board, effectively removing the paint mist particles in the air and providing a clean working environment for the operators. In spray environments with higher concentrations of benzene-containing paint mist, activated carbon purifiers can be used as supporting equipment for multiple adsorptions to achieve purification purposes. Paint mist particle purification efficiency: ≥98%.

Regular addition of specialized paint mist flocculants in the water tank causes the paint mist particles "washed" into the water to coagulate into floating slag blocks on the water surface for easy removal. It also changes the adhesive condition of the paint mist, preventing paint residue from adhering to the inside of the equipment, reducing maintenance workload.

Wide Applications: The pumpless water curtain spray booth is widely applied in whole machine or component spraying processes across industries such as machinery, automobiles, aviation, aerospace, military, railways, motors, pumps, machine tools, furniture, etc.

Equipment Advantages:

★ Direct exhaust fan water lifting — Combines exhaust and water lifting systems. The negative pressure of the exhaust fan directly lifts the water from the water tank to form a circulating water curtain without the need for a water pump.

★ High purification efficiency — Paint mist removal rate ≥98%. Removal rate of hydrophilic dust ≥5μm ≥96%.

★ Reliable operation — Equipped with safety explosion-proof centrifugal fans as exhaust devices and water circulation power devices. Due to the absence of water pumps, there are fewer components prone to failure and frequent maintenance, making the equipment very reliable.

★ Simple operation and maintenance — Basic operation involves starting and stopping the fan (just one button press). Daily maintenance includes adding water (as water is recycled, only a small amount needs to be added due to natural evaporation; automatic water replenishment devices can eliminate manual operations). Regular maintenance includes adding flocculants and removing paint residue.

★ Flexible installation — Modular design allows easy configuration based on painting requirements. No special installation foundation or civil construction required. Suitable for factory renovations.

★ Various types of vestibules — Can select suitable vestibule types and specifications based on factory conditions and process characteristics.

★ No wastewater or gas emissions — Exhaust gas is purified through circulating water (with added specialized flocculants), water evaporates naturally. Therefore, no wastewater discharge. Accumulated paint residue in the circulating water is regularly removed.

★ National standard compliance — Emission standards and working conditions meet GB/T19001-2000 (idtIS09001:2000) national standards.

★ Convenient later maintenance — Realizing pump-free water circulation avoids clogging issues common in water pump systems, simplifies maintenance, ensures reliable performance, reduces faults, and makes usage convenient.

★ Outstanding purification efficiency — Air containing paint mist passes through water curtains, waterfalls, and strong mixing with water mist in the air-water channel, forming multi-stage purification processes that enhance purification efficiency.

★ Easy residue cleaning — Adding flocculants solves paint mist adhesion problems, making cleanup easier and ensuring ventilation effects.

Based on these features, the pumpless water curtain spray booth fundamentally overcomes several shortcomings of earlier pumped water curtain spray booths, including pipeline and filter blockages, pump damage, and poor purification efficiency. It is an essential item for industries or manufacturers involving spray painting processes!

Technical Parameters:

Small Airflow Pumpless Water Curtain Spray Booth Technical Parameters

Model Handling Airflow m³/h Equipment Resistance (Pa) External Dimensions (L×W×H) mm Water Tank Capacity (m³) Fan Model Motor Power (KW)

LFSP(Small)-10 4500-5000 800-1100 1100×1200×2570 0.43 B4-72-12No3.6A3

LFSP(Small)-15 6500-7500 800-1100 1600×1200×2570 0.64 B4-72-12No4.0A5.5

LFSP(Small)-20 9000-10000 800-1100 2100×1200×2570 0.85 B4-72-12No4.5A7.5

LFSP(Small)-30 14000-15000 800-1100 3100×1200×2570 1.10 B4-72-12No6C7.5

LFSP(Small)-45 18000-22500 800-1100 4600×1200×2570 1.30 B4-72-12No8C11

LFSP(Small)-50 23500-25000 800-1100 5100×1200×2570 1.60 B4-72-12No10C15

LFSP(Small)-60 28000-30000 800-1100 6100×1200×2570 2.00 B4-72-12No10C18.5

LFSP(Small)-70 31500-35000 800-1100 7100×1200×2570 2.15 B4-72-12No10C18.5

LFSP(Small)-80 36000-40000 800-1100 8100×1200×2570 3.40 B4-72-12No10C30

Large Airflow Pumpless Water Curtain Spray Booth Technical Parameters

Model Handling Airflow m³/h Equipment Resistance (Pa) External Dimensions (L×W×H) mm Water Tank Capacity (m³) Fan Model Motor Power (KW)

LFSP(Large)-15 13500-15000 800-1100 1600×1500×3355 0.88 B4-72-12No6C7.5

LFSP(Large)-20 19800-22000 800-1100 2100×1500×3355 1.17 B4-72-12No8C11

LFSP(Large)-30 27000-30000 800-1100 3100×1500×3355 1.75 B4-72-12No10C15

LFSP(Large)-45 36000-40000 800-1100 4600×1500×3355 2.63 B4-72-12No10C18.5

LFSP(Large)-50 45000-50000 800-1100 5100×1500×3355 2.92 B4-72-12No12C30

LFSP(Large)-60 54000-60000 800-1100 6100×1500×3355 3.51 B4-72-12No12C37