Suction Hood for Dust Extraction Systems

Product Specifications

Technical details and manufacturing context for Suction Hood

Definition

The suction hood is a critical part of dust extraction units, designed to enclose or surround dust-generating processes to efficiently capture airborne particles, dust, and fumes before they disperse into the work environment. It serves as the primary collection point where contaminated air enters the extraction system. The hood is available in materials such as galvanized steel, stainless steel, and polypropylene, with material grades including Q235B, 304, and 316L, depending on the application. Key parameters include airflow capacity ranging from 500 to 5000 m³/h, capture velocity from 0.5 to 2.5 m/s (per ACGIH guidelines), static pressure drop from 100 to 500 Pa, operating temperature from -20 to 80 °C, wall thickness from 1.5 to 3.0 mm, connection diameter from 100 to 400 mm (per ISO 780), weight from 5 to 50 kg, surface finish from Ra 3.2 to 6.3 µm (per ISO 1302), and noise level from 60 to 85 dB(A) (per ISO 3744). These values are reference ranges and must be verified for the specific model and application. The suction hood is a component, not a standalone system, and its performance depends on proper integration with the extraction system, including ductwork and fan selection. It is used in machinery and equipment manufacturing environments to control airborne contaminants. Always confirm model-specific values and standards with the legal manufacturer or supplier before procurement or installation.

Working Principle

The suction hood creates a localized airflow pattern that draws dust-laden air into the extraction system through negative pressure. Its design—shape, size, and placement—determines capture efficiency by creating sufficient air velocity to overcome particle inertia and environmental air currents. The hood must be positioned close to the dust source to maximize capture, and the airflow rate must be matched to the hood size and required capture velocity. Proper design ensures that contaminants are effectively removed before they disperse, protecting workers and the environment.

Common Materials

Galvanized steel, Stainless steel, Polypropylene

Technical Parameters

Parameter	Typical range	Notes & selection driver
Airflow Capacity	500–5000 m³/h	Select based on capture velocity and hood size
Capture Velocity	0.5–2.5 m/s	Higher for toxic or fine dustACGIH
Static Pressure Drop	100–500 Pa	Affects fan selection
Operating Temperature	-20–80 °C	For standard materials; higher requires special alloys
Material Grade	Q235B/304/316L	304/316L for corrosive or hygienic applicationsGB/T 700, ASTM A240
Wall Thickness	1.5–3.0 mm	Thicker for abrasive dust or structural rigidity
Connection Diameter	100–400 mm	Match ductwork sizeISO 780
Weight	5–50 kg	Depends on size and material
Surface Finish	Ra 3.2–6.3 µm	Smoother for food or pharmaceutical useISO 1302
Noise Level	60–85 dB(A)	At 1 m distance; lower for indoor useISO 3744

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

Housing Part
Main structural enclosure that defines capture zone

Material: Galvanized steel
Flange Part
Connection interface to extraction ductwork

Material: Steel
Baffle Plate Part
Directs airflow and improves capture efficiency

Material: Steel
Mounting Brackets Part
Secures hood to equipment or structure

Material: Steel

Applied To / Applications

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

Dust Extraction Unit

View system integration details

Dust Removal System

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Manufacturers of Suction Hood

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Frequently Asked Questions

What is the primary function of a suction hood?

The suction hood captures airborne particles, dust, and fumes at the source before they disperse into the work environment. It is the entry point for contaminated air into the extraction system.

How do I select the right suction hood material?

Material selection depends on the application. Galvanized steel is common for general use, stainless steel (304/316L) for corrosive or hygienic environments, and polypropylene for chemical resistance. Verify with the manufacturer.

What does capture velocity mean and why is it important?

Capture velocity is the air speed needed to capture particles at the source. It ranges from 0.5 to 2.5 m/s per ACGIH guidelines, with higher values for toxic or fine dust. It determines hood effectiveness.

Can the suction hood be used in high-temperature processes?

The standard operating temperature range is -20 to 80 °C. For higher temperatures, special alloys may be required. Always confirm with the manufacturer for your specific process.

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 (vacuum)
flow rate:	500-5000 m³/h
temperature:	-20°C to 80°C
slurry concentration:	Up to 5% solids by weight

Suction Hood

Product Specifications

Applied To / Applications

Industrial Ecosystem & Supply Chain Structure

Application Fit & Sizing Matrix

Reliability & Engineering Risk Analysis

Compliance & Manufacturing Standards