Technical principle of horizontal screw centrifuge
Horizontal screw centrifuge, full name horizontal screw discharge sedimentation centrifuge, uses the centrifugal force field generated by high-speed rotation to quickly separate mixtures of different densities (usually solid-liquid or liquid-liquid). The equipment consists of a drum, a screw conveyor, a differential, a main motor and an auxiliary motor.
Overview of the work process:
Feeding: The material enters the drum through the feed pipe;
Sedimentation: Under the action of strong centrifugal force, the solid particles settle to the inner wall of the drum;
Conveying: The screw conveyor continuously pushes out the deposited solids at a small differential speed;
Liquid discharge: The clarified liquid is discharged from the other end of the drum through the overflow port.
The whole process is continuous, stable and fully enclosed, which not only has high separation efficiency, but also greatly reduces the risk of manual intervention and secondary pollution.
A complete analysis of the core advantages of the horizontal screw centrifuge
1. High processing efficiency
Short separation time, intensive separation tasks can be completed in just a few seconds;
Applicable to high-flow, continuous processes, and the daily processing capacity of a single device can reach dozens of cubic meters.
2. Adapt to a wide range of materials
Whether it is sewage with low solid content or high-viscosity and high-concentration industrial waste liquid, the horizontal screw centrifuge can accurately match it. Common applicable materials include:
Municipal sludge, papermaking black liquor, chemical sewage
Drilling mud, food pomace, fermentation bacteria
Industrial salt mud, alcohol slag, biological residue, etc.
3. Fully automatic operation, intelligent control
Through the PLC intelligent control system, multi-parameter linkage control such as speed, differential speed, torque, feed flow rate, etc. is realized, and 24-hour unattended operation is supported.
4. Energy saving and environmental protection, stable operation
Low energy consumption and low noise;
Fully enclosed operation to avoid odor leakage and improve environmental protection compliance rate;
Made of high-quality materials to ensure long-term stable and reliable operation.
5. Corrosion-resistant and wear-resistant design
The liquid-contacting parts are made of duplex stainless steel (such as 2205/2507) or 316L stainless steel;
Tungsten carbide or ceramic protective layer is sprayed on key wear parts to extend the life of the equipment.
Widely used in many industries
1. Municipal sewage and industrial sludge treatment
In sewage treatment plants or industrial parks, decanter centrifuges are used in the terminal dehydration link to help users:
Reduce the moisture content of sludge to below 60%;
Reduce transportation and incineration costs;
Achieve sludge stabilization and reduction.
2. Food and beverage industry
In juice processing, soy products, starch extraction, wine brewing and other links, decanter centrifuges can achieve:
Efficient slag removal and improved liquid clarity;
Maintain the nutritional content of food raw materials and meet food hygiene standards;
Realize waste residue recycling or harmless treatment.
3. Petrochemical industry
In oil fields, refining, and fine chemicals, decanter centrifuges can be used for:
Oil-containing sludge and waste liquid treatment;
Solid-liquid separation of process residual liquid;
Recycling of high value-added substances such as catalysts and precipitates.
Horizontal screw centrifuge selection guide
In different application scenarios, correct selection is particularly important. When selecting, it is recommended to focus on the following parameters:
Processing capacity (m³/h): Select the appropriate drum size and speed according to the daily water production/sludge discharge volume
Solid content: Determines the equipment’s pushing capacity and separation load
Viscosity/temperature: Affects material fluidity and equipment configuration (such as heating)
Material requirements: Select different contact materials for corrosive or sanitary environments
Automation requirements: Whether equipped with remote monitoring, frequency converter, PLC/HMI
Site size: Consider the floor space and maintenance space
The decanter centrifuge is not only a separation device, but also a set of efficient, stable, intelligent and environmentally friendly industrial solutions. In the face of complex processes and diverse materials, we always adhere to customer-centricity, using reliable products and professional services to help customers improve process efficiency, reduce processing costs and achieve sustainable development.
