Rotary drum screen is a device used for wastewater treatment, mainly for removing impurities and solid particles from fluids.

Job purpose: Rotary drum screen can continuously and effectively screen solid suspended solids in water, especially suitable for removing finer fibers, oily solids, and suspended solids with higher concentrations. It is widely applicable in various occasions that require solid-liquid separation, such as fine filtration or industrial screening processes for wastewater pretreatment in industries such as textile printing and dyeing, papermaking, agricultural products, food, and seafood processing.

Working principle: Sewage is transported by a water pump and enters the internal water distribution tank of the drum grille through the inlet pipe. It overflows by gravity and flows through the filtering surface of the drum grille. Larger solid objects or fibers are trapped in the rotating drum and, through the action of the internal spiral plate, gather and move to the outlet at one end of the drum, where they fall into the material tank. The drum is equipped with a backwash spray pipe that can run continuously or intermittently to remove impurities that may adhere to the drum surface and prevent clogging of the grid surface.

Technical features:

The equipment adopts internal water inlet, which is particularly suitable for the removal of fibrous waste in sewage. It should not be blocked and has a high removal rate.

The equipment adopts stainless steel orifice plates, which can be used for screening and filtering high temperature and high concentration liquids.

The drum speed is adjustable and consumes very little energy.

The device uses a self-cleaning backwash nozzle to clean the clogged dirt in the grid bars, and the backwash method can be set to adopt the most water-saving mode.

The equipment is capable of automatic continuous operation and automatic slag discharge, with a high degree of automation.

The equipment adopts a fully enclosed design to prevent secondary pollution during operation.

The overall structure of the equipment is made of stainless steel, which is corrosion-resistant.

Main technical parameters: Provides reference flow meters for different types of drum grilles, including flow parameters for different aperture and drum specifications.

advantage:

Efficient decontamination: It can effectively filter out solid particles with a diameter greater than 1mm, providing better decontamination effect than other filtration equipment.

Compact structure: Compact design, small footprint, easy to design and install.

Automated operation: Equipped with an automated control system, it can achieve remote control and monitoring.

Energy conservation and environmental protection: The design considers energy conservation and environmental protection requirements, saves energy costs, and reduces the risk of secondary pollution.

Easy to maintain: Some models are designed for quick replacement of the drum in the later stage, without the need for fixed parts installation, effectively increasing disassembly and assembly efficiency.

Disadvantages:

Structural complexity: Some models may have complex structures, making disassembly and assembly difficult and not conducive to later maintenance.

Cost issue: Due to the use of sophisticated filtering technology and automated control systems, the manufacturing and operating costs of the equipment may be relatively high.

Cleaning effect limitation: Some models may have poor cleaning effects and are susceptible to rake type failures, leading to unstable equipment operation.

Overload safety problem: under extreme conditions, such as rainstorm, the water level rises too much, which may affect the normal operation of the equipment.

 

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