Rotary Feeder for Shotcrete Machines | Specifications & Selection

Product Specifications

Technical details and manufacturing context for Rotary Feeder

Definition

The rotary feeder is a critical component in a shotcrete machine, responsible for precisely metering and delivering dry aggregate or cementitious materials from the hopper to the mixing chamber or conveying system. It ensures consistent material flow, prevents bridging or clogging, and maintains the proper material-to-water ratio required for effective shotcrete application in construction and mining operations. The feeder operates using a rotating rotor with multiple vanes or pockets. As the rotor turns, material from the hopper fills these pockets, and rotation carries it to the discharge point for release into the downstream system. The rotational speed controls the feed rate, providing precise volumetric metering of dry materials. Typical specifications include a feeding capacity of 5–30 m³/h, rotor diameter of 200–500 mm, maximum differential pressure of 0.2–0.4 MPa, operating temperature of -20 to 80°C, drive power of 2.2–7.5 kW, drive speed of 10–30 rpm, voltage of 380–480 V AC (IEC 60038), ingress protection of IP54–IP65, rotor material of 16Mn (GB/T 1591), housing material of Q235B (GB/T 700), and weight of 150–800 kg. These values are reference ranges and must be confirmed for the specific model and application. The feeder is available in materials such as cast iron, carbon steel, stainless steel, and abrasion-resistant steel. Selection requires consideration of material characteristics, required feed rate, operating pressure, and environmental conditions. Verification with the manufacturer is essential to ensure compatibility and performance. Maintenance signals include unusual noise, reduced feed rate, or leakage, indicating wear or seal damage. Failure boundaries include exceeding maximum differential pressure or temperature limits, which can cause leakage or seal failure.

Working Principle

The rotary feeder operates using a rotating rotor with multiple vanes or pockets. As the rotor turns, material from the hopper fills these pockets. The rotation then carries the material to the discharge point, where it's released into the downstream system. The rotational speed controls the feed rate, providing precise volumetric metering of dry materials.

Common Materials

Cast Iron, Carbon Steel, Stainless Steel, Abrasion-Resistant Steel

Technical Parameters

Parameter	Typical range	Notes & selection driver
Feeding Capacity	5–30 m³/h	Depends on rotor size and speed
Rotor Diameter	200–500 mm	Determines overall size and capacity
Max Differential Pressure	0.2–0.4 MPa	Higher differential pressure may cause leakage
Operating Temperature	-20–80 °C	Above 80°C may damage seals
Drive Power	2.2–7.5 kW	Depends on rotor size and material density
Drive Speed	10–30 rpm	Adjustable for feed rate control
Voltage	380–480 V AC	Three-phase, 50/60 HzIEC 60038
Ingress Protection	IP54–IP65	Protects against dust and water jetsIEC 60529
Rotor Material	16Mn	Wear-resistant steel for abrasive materialsGB/T 1591
Housing Material	Q235B	Carbon steel, optional stainless steelGB/T 700
Weight	150–800 kg	Depends on size and material

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

Rotor
Rotating component with vanes that carries material from inlet to discharge

Material: Abrasion-resistant steel or cast iron
Housing Part
Encloses the rotor and provides mounting points, contains pressure differential

Material: Carbon steel or stainless steel
End Plates Part
Seal the ends of the housing and support rotor bearings

Material: Cast iron or steel
Drive Assembly
Provides rotational power to the rotor via motor and gearbox

Material: Steel components with bronze/steel gears
Seals Part
Prevent material leakage and maintain pressure differential

Material: Rubber, polyurethane, or mechanical seals

Industry Taxonomies & Aliases

Commonly used trade names and technical identifiers for Rotary Feeder.

Applied To / Applications

This component is essential for the following industrial systems and equipment:

Shotcrete Machine

View system integration details

Manufacturers of Rotary Feeder

1 company lists this product among what they make. Company figures are quoted from each company's own website; every card states where the relationship came from.

Sichuan Zili Machinery Co., Ltd.

Sichuan, CN

Also makes: Rotary Valve

Listed on the company's own website · profile compiled by CNFX from public sources

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Frequently Asked Questions

What is the typical feeding capacity of a rotary feeder?

The feeding capacity is typically in the range of 5–30 m³/h, depending on rotor size and speed. Confirm the exact value for your specific model and application.

What materials can be used for the rotary feeder?

Common materials include cast iron, carbon steel, stainless steel, and abrasion-resistant steel. The rotor material is often 16Mn (GB/T 1591) and housing material Q235B (GB/T 700), but verify with the manufacturer.

How does the rotary feeder prevent clogging?

The rotating rotor with pockets ensures continuous material flow, preventing bridging or clogging. However, proper selection of rotor size and speed is essential to match material characteristics.

Data Basis

Editorial classification, named public sources where available, and source-reviewed manufacturer records.

Preliminary Technical Classification

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pressure:	Up to 0.5 bar differential pressure
flow rate:	0.5 to 30 m³/h
temperature:	-20°C to 80°C
slurry concentration:	Up to 60% solids by weight

Rotary Feeder

Product Specifications

Industry Taxonomies & Aliases

Applied To / Applications

Industrial Ecosystem & Supply Chain Structure

Application Fit & Sizing Matrix

Reliability & Engineering Risk Analysis

Compliance & Manufacturing Standards