Sieve Basket for Starch Centrifugal Sieving

Product Specifications

Technical details and manufacturing context for Sieve Basket

Definition

A sieve basket is the core rotating component of an industrial starch centrifugal sieving machine. It consists of a perforated cylindrical structure that rotates at high speeds, creating centrifugal force to separate starch slurry into fine starch particles (which pass through the perforations) and larger impurities or coarser particles (which are retained). The basket's design, perforation size, and rotational speed determine the separation efficiency and starch quality. The basket is typically made of stainless steel (e.g., 304, 316) or high-strength alloy steel, with a diameter ranging from 300 to 800 mm and a height from 200 to 500 mm. Slot widths vary from 0.1 to 2.0 mm, and the open area is between 15% and 35%. The centrifugal force generated is 500 to 2000 g, achieved at operating speeds of 500 to 1500 rpm. The basket operates within a temperature range of -10 to 80 °C and can withstand a maximum differential pressure of 0.2 to 0.5 MPa. Surface finish is typically Ra 0.8 to 1.6 µm, and the weight ranges from 50 to 200 kg. Material grades such as 304 or 316L are referenced to ASTM A240, and slot width to ISO 9044. These parameters are directory references and must be verified for the specific model and application. The sieve basket is a component, not a standalone machine, and its performance depends on integration with the centrifugal sieving machine. Proper selection of basket geometry, material, and operating parameters is critical for achieving desired starch quality and throughput. Maintenance includes regular inspection for wear, deformation, or clogging, and cleaning to maintain open area. Failure boundaries include exceeding maximum differential pressure, which may cause basket collapse, or operating outside temperature limits, which may deform the basket or degrade material. Always consult the legal manufacturer or supplier for model-specific values and standards.

Working Principle

The sieve basket rotates at high speed inside the centrifugal sieving machine. Starch slurry is fed into the basket, where centrifugal force pushes the slurry against the perforated walls. Fine starch particles pass through the perforations (screen openings) and are collected as product, while larger particles, fibers, and impurities are retained inside the basket and discharged separately. The separation efficiency depends on the slot width, open area, and rotational speed.

Common Materials

Stainless steel (e.g., 304, 316), High-strength alloy steel

Technical Parameters

Parameter	Typical range	Notes & selection driver
Basket Diameter	300–800 mm	Determines processing capacity; larger diameters increase throughput.
Basket Height	200–500 mm	Affects residence time and separation efficiency.
Slot Width	0.1–2.0 mm	Controls particle size cut-off; smaller slots for finer separation.ISO 9044
Open Area	15–35 %	Higher open area improves flow but reduces structural strength.
Centrifugal Force	500–2000 g	Higher g-force enhances separation but increases wear.
Operating Speed	500–1500 rpm	Speed range for optimal centrifugal force.
Operating Temperature	-10–80 °C	Exceeding range may deform basket or degrade material.
Material Grade	304/316L	316L for corrosion resistance in acidic environments.ASTM A240
Surface Finish	Ra 0.8–1.6 µm	Smoother finish reduces product adhesion and eases cleaning.ISO 4287
Weight	50–200 kg	Affects handling and installation requirements.
Max Differential Pressure	0.2–0.5 MPa	Exceeding may cause basket collapse.

Ranges are indicative industry figures for RFQ preparation, not a supplier commitment. Confirm every value and standard with the legal manufacturer before ordering.

Components / BOM

Perforated Screen Part
Provides the sieving surface with precisely sized openings for particle separation

Material: Stainless steel wire mesh or perforated plate
Support Frame Part
Structural framework that holds the screen and withstands centrifugal forces

Material: High-strength steel alloy
Mounting Flange Part
Interface for connecting the basket to the centrifuge drive shaft

Material: Steel
Discharge Lip/Ring Part
Guides retained particles for discharge from the basket

Material: Stainless steel

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Frequently Asked Questions

What is the function of a sieve basket in starch processing?

The sieve basket is the rotating component that uses centrifugal force to separate starch particles by size. Fine particles pass through the perforations, while larger impurities are retained and discharged.

What materials are commonly used for sieve baskets?

Common materials include stainless steel grades 304 and 316L, as well as high-strength alloy steel. The choice depends on corrosion resistance and mechanical strength requirements.

How do I select the right slot width for my application?

Slot width controls the particle size cut-off. Smaller slots provide finer separation but may reduce throughput. The appropriate width depends on the desired starch quality and the characteristics of the slurry.

What maintenance is required for a sieve basket?

Regular inspection for wear, deformation, or clogging is necessary. Cleaning to maintain open area and checking for any damage that could affect separation efficiency is recommended. Always follow manufacturer guidelines.

Data Basis

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Preliminary Technical Classification

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max rpm:	1200-3000 RPM depending on basket size and construction
pressure:	Atmospheric to 0.5 bar (7.25 psi) differential
flow rate:	5-50 m³/h (22-220 gpm) depending on basket diameter
temperature:	Ambient to 80°C (176°F)
slurry concentration:	5-40% solids by weight

Sieve Basket

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