What is a horizontal screw centrifuge?
The horizontal screw centrifuge, also known as a horizontal spiral sedimentation centrifuge, is based on the basic working principle of centrifugal sedimentation. When the mixed liquid is thrown out forcefully in the high-speed rotating drum, materials of different densities are stratified due to the difference in centrifugal force – solid particles quickly settle on the drum wall under the action of centrifugal force to form a solid phase layer, while the liquid phase gathers in the center. Through the coaxially rotating but slightly different speed screw propeller, the deposited solids are continuously transported to the slag discharge port to achieve continuous separation.
The key structures of the equipment include: drum, screw conveyor, differential, electronic control system, frame and housing, etc. The whole machine can realize automatic feeding, continuous separation, and automatic slag discharge, and is suitable for dehydration or concentration of materials with medium and high solid content and moderate fluidity.
Core advantages: Why choose a decanter centrifuge?
1. Continuous separation, automatic slag discharge, and improved processing efficiency
The decanter centrifuge can work continuously around the clock and has an automatic slag discharge function, which greatly reduces manual intervention and improves operating efficiency. It is especially suitable for working environments with large flow and high load.
2. Compact structure and small footprint
Compared with traditional separation equipment such as belt filter presses and plate and frame filter presses, the decanter centrifuge has a more compact structure and does not require complex civil engineering foundations and auxiliary facilities. It is suitable for new construction and renovation and expansion projects.
3. Closed operation, environmental protection and pollution-free
The equipment adopts a fully enclosed structure, and no secondary pollution will be generated during the treatment process. It is especially suitable for the treatment of odorous, corrosive, and polluting liquids, and meets the requirements of modern industrial environmental protection.
4. Strong adaptability and widely applicable to a variety of materials
Whether it is municipal sludge, industrial wastewater, fruit and vegetable residues, oilfield cuttings, or high-viscosity, highly corrosive fine chemical liquids, the decanter centrifuge can handle it easily and the separation effect is stable.
Technical highlights
The horizontal screw centrifuges we manufacture are continuously optimized in multiple details to comprehensively improve performance and reliability:
High-precision machining to ensure stable operation
The drum and spiral parts are precisely machined by CNC lathes and five-axis machining centers, with a dynamic balance level of G2.5, and no obvious vibration during long-term operation.
Differential drive system to accurately control the slag discharge rate
The differential is the “heart” of the centrifuge. We use planetary gear differentials or hydraulic differentials to accurately adjust the differential speed to meet the optimal separation parameters for different materials.
Wear-resistant and anti-corrosion materials to extend equipment life
The drum lining and spiral blades can be equipped with wear-resistant materials such as stainless steel (such as 2205, 316L), tungsten carbide, ceramic spraying, and carbide welding layers according to the working conditions to deal with high-hardness particles or highly corrosive liquids.
Wide application areas and strong market demand
1. Municipal and industrial sewage treatment
Dehydration of sludge is a key link in sewage treatment plants. Horizontal screw centrifuges can concentrate sludge with a moisture content of up to 95% to a moisture content of less than 60%, significantly reducing subsequent treatment costs.
2. Food processing field
In processes such as juice clarification, plant protein extraction, and edible oil refining, horizontal screw centrifuges play an irreplaceable role, ensuring product purity and improving resource utilization.
3. Chemical and pharmaceutical industry
For the mother liquor and crystal separation tasks in the production process of fine chemicals, dyes, pigments, and pharmaceutical intermediates, horizontal screw centrifuges can provide stable and controllable solid-liquid separation effects.
4. Oil drilling and oilfield waste liquid treatment
Oil-based drill cuttings and oil-containing sludge treatment have always been environmental protection pain points in oilfield development. Horizontal screw centrifuges can achieve three-phase separation of oil, water, and slag, helping to achieve resource recovery.
Selection Guide: How to choose the right decanter centrifuge?
Improper selection will directly affect the separation effect and equipment life, so it is recommended to consider the following aspects comprehensively:
Processing capacity requirements: Determine the drum diameter and length according to the hourly material feed rate.
Solid content and material properties: affect parameters such as differential speed, drum speed, and cone angle design.
Separation purpose: Is it for concentration, dehydration or clarification? Different goals correspond to different process parameters.
Subsequent process connection: Consider the drainage method (gravity/pressure), material fluidity, automation requirements, etc.
Budget and operating costs: Reasonably match equipment configuration to avoid over-investment or performance impact.
