The HTZY Series Sealed Sample Preparation Grinders are primarily used for pulverizing raw materials (e.g., coal, coke, gangue, ores) into fine powders for laboratory testing.

• Working Principle: Vibration grinding
• Feed Particle Size: <13 mm
• Material Compressive Strength: ≤800 kg/cm²

Designed with a compact structure, easy maintenance, and user-friendly operation, these grinders are widely applied in industries such as construction, metallurgy, mining, coal, coking, chemicals, and non-ferrous metal smelting for sample preparation.

Working Principle & Structural Features:

The grinder consists of:

1. Housing: Cold-rolled steel enclosure for sealing, safety, and aesthetics.
2. Base: Cast from high-quality damping materials to minimize vibration during operation.
3. Damping System:
   1. High-performance springs (high strength, elasticity) + rubber pads for dual damping, reducing noise and ensuring stability.
4. Power Unit:
   1. Motor, eccentric weight, and support cylinder.
   1. The motor drives the eccentric weight to generate high-speed orbital motion, transmitted to the grinding assembly.
5. Grinding Assembly:
   1. Grinding bowl, ring, and hammer.
   1. Materials are crushed and ground into fine powder via high-frequency impact.
6. Clamping Device:
   1. Lever and screw mechanism to secure grinding components for efficient power transfer and safety.

Technical Parameters:

No.	Parameter	Unit	HTZY-1	HTZY-2	HTZY-3
1	Max. Load Capacity	g	100	100X2	100×3
2	Feed Particle Size	mm	<13
3	Output Particle Size	mm	0.074–0.124 (120–200 mesh)
4	Grinding Time	min	2–5
5	Motor Power	kW	1.1	1.5	1.5
6	Power Supply		3-phase 380V, 50±1 Hz
7	Dimensions (L×W×H)	mm	520×500×730	550×550×840
8	Weight	kg	140	172	180