Laboratory Pulverizer
Continuous Feeding Grinder High Efficiency Pulverizer for Lab Sample Preparation
Item Number: PP-SL22
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Product Overview

The continuous feeding grinder featured here is a rugged, high-efficiency machine that employs impact and shear forces to pulverize dry materials into uniform powders. Material is gravity-fed into a grinding chamber where a rotor spinning at 2850 rpm drives a set of hammers against a stationary grinding track. This action crushes and grinds the feed into fine particles that pass through a user-selectable sieve screen, guaranteeing a controlled output between 10 and 120 mesh. An integrated fan-assisted airflow system pushes the powder into a filter bag, simultaneously separating dust and keeping the exhaust clean. This closed-loop design makes it an excellent choice for environments that demand minimal airborne contamination.
From pharmaceutical laboratories to food production floors, this versatile unit serves a broad range of industries. In pharmaceutical R&D, it is used to comminute active pharmaceutical ingredients and excipients for tablet formulation. Food technologists rely on it to produce spice blends, grain flours, and protein powders. The chemical sector employs the grinder for processing pigments, catalysts, and resin powders. Agricultural testing labs utilize it to homogenize soil and plant samples, while universities incorporate it into materials science and chemistry curricula. Its ability to handle both brittle and fibrous materials without clogging sets it apart from conventional hammer mills.
Reliability is at the core of this machine’s design. Built in Taiwan, it features a one-piece machined grinding chamber that resists wear and ensures consistent clearance between rotating and stationary parts. The motor is IP54-rated for dust and water resistance, and the entire electrical system is protected by a thermal overload relay and a misoperation interlock. With a noise output of less than 70 dB(A) and zero vibration, the grinder can be placed directly on a lab bench without bolting down. Its compact footprint and lockable casters make it easy to relocate as workflows change, while the straightforward maintenance routine—quick chamber access and wipe-down cleaning—maximizes uptime. These engineering attributes combine to deliver a machine that lab managers trust for years of dependable service.
Key Features
- Exceptional Grinding Fineness Range: Capable of producing powders from coarse 10 mesh to fine 120 mesh, this grinder goes beyond the typical 100-mesh limit of conventional models. Its specialized hammer and track design efficiently processes even fibrous, high-moisture, or temperature-sensitive materials without clogging or degradation.
- Vibration-Free Operation: An innovative mechanical design distributes impact forces uniformly, resulting in virtually zero vibration. This not only eliminates the need for bolting the unit down but also reduces mechanical wear and noise, creating a more comfortable working environment.
- Dust-Free Processing: The fully sealed grinding chamber, combined with a high-efficiency filter bag, captures particulate matter before it escapes. This design protects operator health, prevents cross-contamination between samples, and simplifies compliance with workplace safety regulations.
- High-Speed Motor and Rapid Throughput: Powered by a 1HP (0.75kW) motor that runs at 2850 rpm, the unit achieves a grinding capacity between 5 and 10 kilograms per hour. This high-speed operation accelerates processing while maintaining consistent particle size.
- Overload and Safety Protection: Integrated safety mechanisms include an automatic overload cut-off and protection against improper use. These features extend motor life and ensure safe operation even when handling dense or hard materials.
- Quiet Performance: Despite its powerful motor, the machine operates at a remarkably low noise level thanks to precision-balanced components and sound-dampening design. This makes it suitable for laboratory settings where a quiet atmosphere is essential.
- Easy Mobility and Compact Design: Four lockable casters allow the grinder to be rolled from one workstation to another effortlessly. With dimensions of just 500×300×550 mm, it fits easily on countertops or in tight lab spaces.
- Simple Disassembly and Cleaning: The grinding chamber and related components can be quickly accessed without tools, and the smooth, crevice-free interior prevents material buildup. Cleaning between batches takes only a few minutes, reducing downtime and the risk of cross-contamination.
- Versatile Material Handling: From brittle minerals to tough organic fibers, the unit adapts to a wide spectrum of materials. It is equally effective for herbs, spices, resins, grains, plastics, and ores, making it a multi-purpose asset for diverse industries.
- Original Taiwan Manufacturing: This grinder is built in Taiwan to stringent standards, using high-quality materials and meticulous assembly. The result is a machine that outperforms generic alternatives in durability, grinding uniformity, and operational stability.
Applications
| Application | Description | Key Benefit |
|---|---|---|
| Traditional Chinese Medicine | Grinding of dried herbs like ginseng, astragalus, and licorice into fine powders for teas, capsules, and extracts. | Preserves bioactive compounds with minimal heat generation, maintaining therapeutic efficacy. |
| Nutraceutical Formulation | Pulverizing protein powders, fiber supplements, and superfood blends for tablets or drink mixes. | Achieves consistent micronization for even distribution of ingredients and improved dissolution. |
| Spice Processing | Milling of pepper, cinnamon, turmeric, and chili into powders for commercial seasoning production. | Dust-free design retains aromatic volatiles and prevents strong odors from spreading. |
| Food Ingredient R&D | Preparing fruit powders, vegetable flours, and dehydrated dairy products for novel food prototypes. | Quick, thorough grinding with easy clean-up enables rapid recipe iteration. |
| Chemical Catalyst Synthesis | Grinding catalyst precursors and support materials to precise particle sizes for enhanced surface area. | Uniform particle size improves reaction efficiency and reproducibility. |
| Pesticide Residue Analysis | Homogenizing plant tissue and grain samples for extraction and LC-MS/MS testing. | High throughput and sealed operation ensure sample integrity and cross-contamination prevention. |
| 3D Printing Powder Preparation | Milling thermoplastic pellets or metal powders into fine, uniform feeds for additive manufacturing. | Consistent granulometry enhances print quality and material flow. |
| Geochemical Sample Prep | Reducing ore, rock, and mineral specimens to analytical fineness for XRF and ICP analysis. | Handles hard, abrasive materials reliably, extending consumable life with robust construction. |
Technical Specifications
| Parameter | Value |
|---|---|
| Model | PP-SL22 |
| Product Name | Continuous Feeding Grinder |
| Power | 1HP / 0.75 kW |
| Voltage | 220 V |
| Rotational Speed | 2850 r/min |
| Grinding Fineness | 10 – 120 mesh |
| Grinding Capacity | 5 – 10 kg/h |
| Weight | 25 kg |
| Dimensions (L×W×H) | 500 × 300 × 550 mm |
| Country of Origin | Taiwan |
Why Choose This Product
- Unmatched Durability: The grinder’s core components—motor, rotor, and grinding track—are fabricated from premium alloys and precision-machined for tight clearances. This construction withstands the abrasive forces of continuous operation and resists deformation over time. Unlike lightweight imitations, this machine maintains its performance consistency even after processing hundreds of kilograms of material, providing a long-term, cost-effective solution.
- Consistent Performance Under Load: A major challenge in particle size reduction is drift caused by motor slowdown or heat buildup. This unit addresses that with a high-torque motor and efficient airflow cooling. It sustains 2850 rpm at maximum load and exhibits negligible temperature rise, ensuring particle size distribution remains stable throughout each run—a critical factor in quality-controlled manufacturing.
- Operator Safety First: The fully enclosed grinding circuit, coupled with a magnetic safety switch on the hopper lid, prevents accidental contact with moving parts. If the load exceeds safe limits, the thermal overload relay cuts power to the motor, eliminating fire and burnout risks. These features reduce liability and downtime, making it a safer investment for busy labs with multiple operators.
- Adaptable to Your Workflow: Standard sieve screens are available in a range of mesh sizes to customize output fineness. For challenging materials, we offer alternative hammer materials and coated chambers. Our application engineers are ready to help select the optimal configuration and can even conduct test grinding on your materials to validate performance before purchase.
- Hygienic and Easy to Validate: The grinding chamber, hopper, and filter assembly disassemble without tools in under two minutes. All product-contact surfaces are polished stainless steel, resistant to most cleaning agents. This design simplifies cleaning validation for GMP environments and reduces cross-contamination risks when switching between products.
Invest in a grinder that delivers precision, safety, and reliability. Contact our specialists today to discuss your processing requirements and receive a custom quote or arrange a product demonstration.
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