Dry Herbal Extract Grinder | Fine Powder – Non-Clogging – GMP Standard | T&T

🧾 Dry Herbal Extract Grinder – Introduction

The Dry Herbal Extract Grinder is a vital piece of equipment in traditional herbal medicine (Eastern medicine) production. It is specifically designed to grind dry herbal extracts (concentrated extracts that have been dried) into fine powder, which is then used in the formulation of products such as pills, tablets, powders, granules, etc.

⚙️ Main Components

A standard Dry Herbal Extract Grinder is composed of the following key parts:

🔸 Feed Hopper

• Where the dry extract material is loaded into the machine.

• May be equipped with a regulating valve to control the feeding rate.

🔸 Grinding Chamber

• The core part containing the grinding mechanism, which may consist of:

  • Hammer blades (for hammer mills)

  • Rotating pins (for pin mills)

  • High-speed air jets (for jet mills)

🔸 Filter Screen / Sieving Mesh

• Installed inside the grinding chamber.

• Functions to separate and allow only fine particles that meet size requirements to pass through.

🔸 Suction Fan or Dust Collector (if applicable)

• Extracts the fine powder after grinding.

• Helps collect the powder efficiently and reduces material loss.

🔸 Electric Motor

• Powers the grinding mechanism.

• Often paired with a gearbox or inverter to control speed.

🔸 Machine Frame and Safety Covers

• Made of SUS 304 or SUS 316 stainless steel, rust-proof and GMP-compliant for pharmaceutical use.

🔁 Working Principle

The working principle varies depending on the type of grinder. Below are typical examples:

✅ Hammer Mill Principle:

• Dry extract is loaded via the feed hopper.

• Hammer blades rotate at high speed (several thousand to tens of thousands of RPM).

• The hammers impact the material, breaking it into smaller fragments.

• Continuous impact and friction further reduce the size.

• Once the powder is smaller than the mesh holes, it passes through the screen and is discharged through the outlet.

✅ Ultra-fine Grinding (Pin Mill / Jet Mill):

• Utilizes high-speed airflow or electrostatic impact to break down the material.

• Generates minimal heat, ideal for preserving sensitive active ingredients.

• Achieves extremely fine particle sizes (as small as 10–50 microns).