External Rotary Drum Screen for Primary Treatment in Meat & Poultry Processing Plants

External Rotary Drum Screen for Primary Treatment in Meat & Poultry Processing Plants

Category： Externally Fed Drum Screen
Drive Mechanism: Heavy-Duty Gear Motor
Flow Capacity: Up to 5000 m³/day
Spray Water System: High-Pressure Nozzles Included
Installation: Channel Mounted, Pre-assembled Unit
INQUIRY EMAIL

Externally rotary fed drum screen description

The externally fed rotary drum screen is a reliable self-cleaning wedge wire screen that performs fine micro-screening for municipal wastewater treatment.

This screening technology performs particularly well in applications with wastewater containing high levels of oil or grease and in scum applications that may obscure other types of screens. It is used for fine screening of primary sewage influent at the head of the canal and for screening of clarifier flotsam.

The flow of suspended liquid for sieving is oriented with the surface of the rotating screen perpendicular to the holes between the rods.

As the filtered liquid passes through the holes of the screen and discharges into the tank below the cylinder, the solids are trapped on the surface of the same screen and are attracted by rolling friction to the spillway vanes, which transfer them to a special container.

The rods of the cylinder are wedge-shaped, allowing an uninterrupted flow of hydraulic pressure and minimizing the risk of solids sticking and causing blockages.

Externally rotary fed drum screen function

Separation of Solids from Liquid: The primary function of externally fed rotary drum screens is to separate solid particles from a liquid stream.

This is particularly important in wastewater treatment plants where the goal is to remove solid contaminants from sewage or industrial wastewater before it can be discharged or further treated.

Screening and Filtration: As the liquid flows into the drum screen, the solid particles and debris are captured on the surface of the rotating drum due to the perforations or slots.

The size of these openings can be customized based on the specific requirements of the application. Larger openings allow larger particles to pass through, while smaller openings capture finer solids.

Continuous Operation: One of the advantages of externally fed rotary drum screens is that they can operate continuously. The rotation of the drum ensures a continuous screening process, making them suitable for applications where a constant flow of liquid needs to be processed.

Self-Cleaning Mechanism: To prevent clogging and maintain efficient operation, many rotary drum screens are equipped with a self-cleaning mechanism. This mechanism typically involves brushes or spray nozzles that clean the drum’s surface as it rotates, dislodging and removing accumulated solids.

Efficient Solids Removal: Rotary drum screens are known for their efficiency in removing solids from liquid streams. They are often used as a preliminary treatment step in wastewater treatment plants to protect downstream processes and equipment from damage or contamination.

Variability in Design: Externally fed rotary drum screens come in various designs, including different drum configurations, materials, and sizes. The choice of design depends on factors such as the type of solids being removed, the flow rate of the liquid, and the specific requirements of the application.

Overall, externally fed rotary drum screens play a crucial role in the treatment and purification of liquid streams by effectively separating solid contaminants, improving water quality, and protecting downstream processes and equipment.

Externally rotary fed drum screen model

Industry Type	Slot (mm)	RDS03/300	RDS06/400	RDS06/700	RDS06/1000	RDS06/1300	RDS06/1600	RDS08/2000	RDS08/2500
Paper Industry	0.5	6	20	40	60	80	100	130	190
Slaughter House	0.5	4	15	30	45	60	75	95	130
Seafood Industry	0.75	5	17	35	50	70	90	110	140
Meat Industry	0.75	6	20.5	40	60	80	100	130	190
Meat Industry	1.0	7.5	25	50	75	100	125	150	220
Vegetable Industry	1.0	12	40	75	110	150	180	220	330