Paddle Wheel for Powder Feeding Systems | Component Specifications

Product Specifications

Technical details and manufacturing context for Paddle Wheel

Definition

In powder feeding systems, the paddle wheel is a critical mechanical component that rotates to create controlled movement of powdered materials. It typically consists of a central hub with multiple radial blades or paddles that scoop, push, or agitate the powder, ensuring consistent flow rates and preventing material bridging or clogging in hoppers, feeders, and transfer lines. The paddle wheel is designed for integration into feeding equipment where precise material handling is required. Its construction materials include stainless steel, carbon steel, and food-grade plastic, with stainless steel grades such as SS304 or SS316L specified for corrosion resistance or food-grade applications. Key parameters include rated power from 1.5 to 7.5 kW, rotational speed from 30 to 120 rpm, paddle diameter from 200 to 800 mm, and shaft diameter from 40 to 120 mm. Surface roughness ranges from Ra 0.8 to 3.2 μm, and operating temperature ranges from -20 to 120°C. The maximum shaft speed is 150 rpm, and weight varies from 15 to 120 kg. Balance quality grade is G6.3 per ISO 21940-11. These values are reference ranges and must be confirmed for the specific model and application. The paddle wheel is a component, not a standalone machine, and its performance depends on the feeding system design, material properties, and operating conditions. For procurement, verify model-specific parameters and standards with the legal manufacturer or supplier. Regular inspection for wear, imbalance, and material buildup is recommended to maintain performance and prevent failures.

Working Principle

The paddle wheel rotates around a central axis, with its blades making contact with the powder material. As it turns, the blades displace the powder, creating a pushing or conveying action. The rotation speed, blade design, and angle determine the flow rate and mixing efficiency. In some systems, it may also serve to break up clumps or maintain powder homogeneity. The paddle wheel is driven by a motor, and its speed is controlled to match the required throughput. The blades are designed to minimize material degradation while ensuring consistent flow. The shaft is supported by bearings, and the entire assembly is sealed to prevent powder leakage. The working principle relies on mechanical displacement, not on pneumatic or vacuum systems, making it suitable for gravity-fed or metered feeding applications.

Common Materials

Stainless steel, Carbon steel, Food-grade plastic

Technical Parameters

Parameter	Typical range	Notes & selection driver
Rated Power	1.5–7.5 kW	Depends on material density and throughput
Rotational Speed	30–120 rpm	Higher speed increases mixing intensity
Paddle Diameter	200–800 mm	Match to trough width
Shaft Diameter	40–120 mm	Selected for torque capacity
Material	SS304/316L	316L for corrosive or food-gradeASTM A240
Surface Roughness	Ra 0.8–3.2 μm	Lower for hygienic applicationsISO 4287
Operating Temperature	-20–120 °C	Beyond range may require special seals
Max Shaft Speed	150 rpm	Exceeding may cause vibration
Weight	15–120 kg	Varies with size and material
Balance Quality Grade	G6.3	For high-speed operationISO 21940-11

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

Hub
Central mounting point that connects to the drive shaft and supports the blades

Material: steel
Blades/Paddles Part
Radial extensions that contact and move the powder material

Material: stainless steel
Mounting Hardware Part
Bolts, screws, or fasteners that secure blades to the hub

Material: steel
Shaft Seals
Close the gap where the shaft enters, so powder cannot work its way out of the assembly.

Applied To / Applications

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

Powder Feeding System

View system integration details

Manufacturers of Paddle Wheel

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.

Sino-Inst

Shanxi, CN

Also makes: Level Transmitter, Flow Meter, Sanitary Flow Meter and 1 more

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

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Frequently Asked Questions

What materials are available for the paddle wheel?

The paddle wheel can be made of stainless steel, carbon steel, or food-grade plastic. Stainless steel grades SS304 and SS316L are listed, with SS316L recommended for corrosive or food-grade applications. The material choice affects durability, hygiene, and cost.

What is the typical rotational speed range?

The rotational speed ranges from 30 to 120 rpm, depending on the required flow rate and mixing intensity. Higher speeds increase mixing but may cause more wear. The maximum shaft speed is 150 rpm; exceeding this may cause vibration.

How do I select the right paddle diameter?

Paddle diameter ranges from 200 to 800 mm and should match the trough width of your feeding system. The diameter influences the volume of material moved per revolution and the overall footprint. Confirm the exact size based on your equipment design.

What standards apply to the paddle wheel?

The material standard for stainless steel is ASTM A240, surface roughness is per ISO 4287, and balance quality grade is per ISO 21940-11 (G6.3). These are reference standards; verify compliance with the manufacturer for your specific model.

Data Basis

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

Preliminary Technical Classification

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pressure:	Atmospheric to 2 bar
flow rate:	Up to 100 m³/h
temperature:	-20°C to 150°C
slurry concentration:	Up to 60% solids by weight

Paddle Wheel

Product Specifications

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