China Diatomaceous Earth Dispenser

A diatomaceous earth dispenser meters the fine, porous powder into processes where consistent dosing is required, such as beverage filtration, paint formulation, or agricultural carrier applications. The device controls feed rate to maintain product uniformity and minimize waste.

Overview and Function

The dispenser consists of a hopper, a metering mechanism, and a drive unit. Powder flows from the hopper by gravity into a rotating screw or rotary valve that determines the volumetric output. Adjusting the screw speed or valve opening changes the mass flow rate.

Working Principle

When the motor rotates the screw at a set speed, the helical flights lift DE particles and push them toward the discharge outlet. The cross‑sectional area of the screw and the pitch define the volume displaced per revolution. A feedback sensor (optional) can close the loop to maintain a target flow despite variations in bulk density.

Technical Specifications

Parameter	Typical Range	Notes
Hopper Volume	5 – 50 L	Customizable per feed rate
Flow Rate	0.1 – 5 kg/h	Depends on screw diameter and speed
Power Consumption	0.18 – 0.75 kW	Motor rating, variable frequency drive optional
Material of Construction	304 SS, 316 SS, or food‑grade UHMW‑PE	Selected for corrosion resistance and hygiene
Operating Temperature	-10 °C to 80 °C	Limited by seal and motor ratings

Material Options

• 304 stainless steel – good general corrosion resistance, suitable for most industrial powders.
• 316 stainless steel – enhanced resistance to chlorides, preferred in food‑grade or marine environments.
• Food‑grade UHMW‑PE – low friction, non‑stick surface for highly abrasive or sticky DE grades.

Typical Applications

In beverage filtration, DE is added as a filter aid to achieve consistent cake permeability; precise dosing prevents over‑use that would increase pressure drop and under‑use that reduces clarity. In paint manufacturing, DE acts as a matting agent and rheology modifier; uniform distribution ensures consistent gloss and viscosity across batches. Agricultural carriers use DE as a moisture‑absorbing carrier for pesticides; accurate metering guarantees the correct active‑ingredient loading.

Customization Possibilities

• Hopper shape (cylindrical, conical, or rectangular) to match site layout.
• Screw diameter and pitch selection for desired flow range.
• Integration of load‑cell or vibratory feeder for gravimetric feeding.
• Explosion‑proof motor and ATEX certification for dust‑hazard zones.
• Sanitary quick‑release clamps and CIP‑compatible surfaces for food‑process lines.

Quality Assurance

Each dispenser undergoes dimensional inspection of screw flights, leak testing of seals, and functional run‑test at minimum, maximum, and intermediate speeds. Material certificates are provided for stainless steel grades, and surface roughness is measured to ensure Ra ≤ 0.8 µm on product‑contact parts when required.

Packaging and Shipping

Units are skid‑mounted, wrapped in stretch film, and secured with corner protectors. For overseas shipments, the dispenser is placed in a fumigated wooden crate with moisture‑barrier lining and shock‑absorbing foam. Documentation includes CE declaration, test reports, and an installation manual.

Frequently Asked Questions

For further details or to request a quotation, please contact our technical team.