Working logic of horizontal screw centrifuge
Horizontal screw centrifuge is a continuous solid-liquid separation equipment designed based on the principle of sedimentation centrifugal force. Its core structure includes: drum, scroll, differential, drive motor, frame system and automatic control system, etc.
Its operation process is as follows:
Feeding stage: solid-containing materials are injected into the drum through the feed pipe;
Centrifugal sedimentation: In the high-speed rotating drum, due to the density difference, the solids are deposited on the drum wall under the action of centrifugal force;
Solid-liquid separation: The screw conveyor continuously transports the deposited solids to the slag outlet for discharge in a differential manner with the drum;
Liquid discharge: The clarified liquid flows freely from the drum along the liquid layer to achieve stable solid-liquid separation.
This separation method is particularly suitable for treating high-concentration, high-viscosity, and difficult-to-sediment suspended liquids, and performs excellently in dehydration efficiency and operating costs.
Core structure highlights analysis
1. Reinforced drum system
Made of high-strength stainless steel (such as SS2205/SS316L), equipped with corrosion-resistant and fatigue-resistant welding technology to ensure long-term high-load operation without deformation. Some models use duplex stainless steel to further improve wear-resistant life.
2. Precision processing of screw conveyor
The spiral blade is a key pusher component. It adopts equal thickness or variable pitch structure, and can be supplemented with wear-resistant alloy, ceramic spraying, tungsten carbide coating and other strengthening processes to ensure high efficiency and low maintenance frequency in long-term operation.
3. Differential technology
High-precision planetary differential or hydraulic differential drive system to ensure stable control of solid-liquid separation speed difference. For complex working conditions, dual motor control can be selected to realize intelligent differential adjustment.
4. Intelligent control system
The whole machine is equipped with PLC+touch screen intelligent control system, which can realize automatic feeding, automatic slag discharge, liquid level monitoring, differential speed adjustment, remote alarm and networking, and is suitable for smart factory applications of Industry 4.0 standards.
Multi-scenario application
Decant centrifuge has become a key equipment in many industries due to its excellent separation efficiency and adaptability. The following is an analysis of typical application cases:
1. Sewage treatment and sludge dehydration
Widely deployed in municipal sewage treatment plants, industrial parks, printing and dyeing plants and other units. The decanter centrifuge provided by our company can dehydrate primary sludge with a moisture content of more than 95% to less than 70%, which is convenient for subsequent incineration or composting. The matching dosing system can further optimize the dehydration effect.
2. Food processing field
Pomace separation in juice production, bacterial removal in soy sauce brewing, protein precipitation in dairy products, degumming of vegetable oil, etc. can all achieve continuous separation, meet food-grade safety standards, and the contact surface material can be selected as 316L stainless steel.
In the future industrial development, the decanter centrifuge will not only be a separation device, but also an important part of green technology, efficient manufacturing and intelligent operation. We will adhere to the concept of “technology-driven + service-first”, deeply integrate the three systems of R&D, manufacturing and service, and continue to provide customers with high-quality, high-performance and high-return separation solutions.
