What is the internal structure of the wedge-shaped metal wire mesh drum filter

The internal structure of the wedge-shaped metal wire mesh drum filter mainly consists of three parts: the drum core component, the filter screen structural unit, and the supporting system, which work together to achieve efficient solid-liquid separation.
The core component of the drum is the power and support foundation of the filter, consisting of a central shaft, drum skeleton, and driving device. The central shaft runs through the axis of the drum and is connected to an external motor through gears or belts to provide rotational power. The drum skeleton is welded with high-strength stainless steel or alloy steel to form a cylindrical frame, with evenly distributed installation holes on its surface for fixing the filter structure unit. The skeleton design needs to balance strength and lightweight, ensuring the stability of the drum during high-speed rotation while reducing energy consumption. The driving device is usually equipped with a variable frequency motor, which can adjust the drum speed according to the filtration requirements, optimizing the balance between filtration efficiency and energy consumption.

The filter structure unit is the core filtering component of the filter, consisting of a wedge-shaped metal wire mesh and a supporting frame. The wedge-shaped metal wire mesh is made of 304 or 316L stainless steel wire, which is welded to the support bar through a special process to form a V-shaped slot filter channel. This structure makes the surface of the filter smooth, and the gaps gradually expand from the inside out, ensuring high-precision filtration (accuracy range of 0.1 μ m-10mm) and achieving self-cleaning function through the design of small inner and large outer gaps. The support frame is made of the same material as the drum skeleton, and the filter unit is fixed to the surface of the drum through bolts or buckles, forming a continuous filtering surface. The filter unit can be designed as a modular structure for quick replacement and maintenance.

The supporting system includes a backwash device, a sewage system, and a control system. The backwash device consists of a high-pressure water pump, nozzle, and pipeline. When the impurities trapped on the surface of the filter reach the set thickness, the system starts the backwash program. High pressure water is sprayed outward from the inside of the drum to flush the surface of the filter, remove the impurities, and discharge them into the sewage system. The sewage system includes a collection tank, sewage pipes, and valves, which are used to collect the waste liquid generated by backwashing and regularly discharge it to the sewage treatment unit. The control system adopts PLC or intelligent sensors to monitor real-time parameters such as drum speed, filter screen pressure difference, and liquid level. It automatically adjusts the backwash frequency and drum speed to ensure that the filter operates under optimal conditions. At the same time, it has fault alarm and remote monitoring functions to improve the reliability and maintenance efficiency of equipment operation.