Centrifuges Suitable for Solid-Liquid Separation, Particle Size Classification, Liquid Phase Clarification and Sludge Dewatering of Various Suspensions in Vario

Working principle
The horizontal spiral sedimentation centrifuge main unit starts and automatically increases its speed. When it reaches the predetermined indicators and the drum speed reaches the feeding speed, the feed valve opens. The separated suspension liquid enters the material bin of the spiral feeder through the feed pipe and then passes through the initial acceleration stage before entering the drum through the outlet of the material bin. Due to the action of centrifugal force, the suspension liquid in the drum quickly separates into two phases; the heavier solid phase settles on the inner wall of the drum. Due to the differential action of the differential gear, a relative motion is generated between the spiral feeder and the drum, and the solid phase is further dehydrated by the drying zone at the small end of the drum. Then it is discharged through the discharge port. The separated liquid is discharged through the large end overflow or is discharged by a centrifugal pump.

Material Selection
The material of the part of the centrifuge that comes into contact with the liquid can be selected based on the requirements of the user’s operating materials. It can be made of austenitic stainless steel 304, 321, 316L, 904L, duplex steel 2205, Hastelloy alloy, titanium alloy or other corrosion-resistant materials.

Structural selection
Lubrication method: A. Grease self-lubrication B. Cyclic forced lubrication
· According to the user’s requirements, the number of helical blades can be selected, including single-head helix, double-head helix, and multi-head helix. Spiral surface coating with high-hardness alloy

Anti-wear design
· Spiral spray welding of hard alloy powder
· Spiral surface embedded with hard alloy wear-resistant blocks
· Welding of high-strength wear-resistant ribs on the inner wall of the drum
Solid phase discharge port:
1. Use hard alloy cone sleeves or wear-resistant plates
2. Simple structure, easy to replace                                                                                                                                                                                                                                                                                                                                                                     3.low maintenance cost

Replaceable wear-resistant blades
The wear-resistant blades can be fixed on the spiral blades by countersunk screws, brazing or adhesives, thus greatly simplifying the repair of the spiral blades. Currently, the materials of replaceable wear-resistant blades are mostly tungsten carbide hard alloy or aluminum oxide ceramics. When using wear-resistant blades, a combination of countersunk screws and adhesives is generally used for bonding. For those using the bonding method directly, the bonding surface of the spiral blades needs to be sandblasted in advance, and then the corresponding heating and curing treatment is carried out after bonding to increase the bonding strength of the adhesive.

Main features:
Continuous operation, spiral discharge, large production capacity.
Widely applicable, can be widely used in fields such as chemical industry, petroleum, food, pharmaceuticals, environmental protection, etc. that require solid-liquid separation.
Dual motor control, the rotational speed of the drum can be adjusted in two levels independently.
High adaptability to materials, the range of solid phase particle sizes that can be separated is wide (0.002 – 2mm), and separation can be carried out normally even when the particle size of the solid phase is uneven.

Application Case
The LW series spiral discharge centrifuge is a horizontal, continuous operation, continuously discharging by spiral mechanism sedimentation centrifuge. It is suitable for solid-liquid separation, particle size classification, liquid phase clarification and sludge dewatering of various suspensions in various industrial sectors (such as polyoxyethylene resin, ammonium sulfite, barium carbonate, sulfuric acid rosin, lime powder, titanium dioxide, ore, kaolin, siliceous soil, diatomite, starch, soy protein, peanut protein, fruit juice, beverages, vegetable oil, citric acid, waste oil conversion, water purification, distillery residue, animal fat, blood powder, power plant sludge, dyeing sludge, papermaking sludge, natural gas desulfurization sludge, activated sludge, ammonia sludge, car wash sludge, cement sludge, drilling mud, coal flotation waste, cryolite flotation solution, etc.).