Main Technical Requirements of Sand Mill

Main technical requirements of sand mill

1. Basic equipment configuration:

1) Effective volume: Calculated based on annual output demand, currently, a single unit in the new materials industry is generally 400L;

2) Grinding media filler: 1000-1260kg, 70%-85% addition amount;

3) Rotor Structural form: rod pin rod pin grinding system generates high-strength shear force and crushing force, and meets the particle size requirements in a short time;

4) Separator form: large-area screen separation, equipped with high-speed disperser, suitable for microns to Grinding of products with different viscosity requirements for different nanoscale products;

5) Rotor line speed: 8-15m/s;

6) Spindle sealing form: containerized double-end mechanical seal;

7) Material pump: 2-3-inch pneumatic diaphragm pump;

8) Particle size requirements: After grinding, the product has narrow particle size distribution, high efficiency, low energy consumption, and the effects meet customer needs;

9) Convenient cleaning and maintenance: easy to clean, repair and maintenance, only need to remove the front cover to inspect the interior Components and screen replacement save cleaning and maintenance time and quickly convert production formulas. .

10) Convenient addition of zirconium balls: It is equipped with a zirconium ball opening, which can facilitate and quickly add zirconium balls.

11) Discharge screen: The main materials of the discharge screen are SUS304 and ceramic. Stainless steel screens are characterized by large discharge area but may cause trace metal contamination. The ceramic stacked sheet type is characterized by a small discharge area but no metal pollution. Some models of the discharge network will have cooling devices in the discharge network, which can further reduce the material temperature. Generally, the gap of the discharge screen is about 1/2 of the diameter of the grinding beads.

2. Energy consumption requirements:

1) Cooling water usage requirements: flow rate, temperature 5-11℃, pressure 0.2-0.3Mpa;

2) Cooling water inlet and outlet pipe specifications: Quick installation connector, chuck;

3) Inlet and outlet specifications: Quick-installation connector, chuck;

4) Gas usage requirements: Pressure 0.6MPa, flow;

5) Electricity usage requirements: Under the same configuration, choose energy-saving type;

3. Electrical drive requirements:

1) Motor power: Related to energy consumption;

2) Inverter: Try to choose well-known brands;

3) Transmission form: pulley transmission, frequency conversion speed regulation;

4) Control system: PLC+ touch screen;

5) Cooling system: barrel cooling, machine seal cooling;

6) Protection device: barrel If the temperature is too high and the pressure is too high, the main machine will automatically shut down;

4. Mechanical sealing requirements:

1) Mechanical sealing protection device: if the mechanical sealing temperature is too high, the liquid level is too low and the pressure deviation is from the set value protection, the main machine will automatically shut down;

2) Machine seal independent cooling bucket: Independent bucket, pressure 0.2-0.3Mpa;

3) Machine seal seal ring: O-ring, corrosion-proof perfluoro seal;

4) Sealing liquid: Add seal coolant similar to the material to ensure The materials are absolutely not contaminated;

5. Wear-resistant materials in the abrasive area:

1) Inner cylinder material: silicon carbide

2) Rod pin material: polyurethane or ceramic;

3) Rotor material: polyurethane or ceramic;

4) Separator material: SUS304;

6. Control and monitoring System requirements:

PLC Touch screen control: easy to operate and process control; the stand-alone machine has intelligent operation and intelligent maintenance and maintenance functions, and is equipped with intelligent operation, manual operation, maintenance teaching, maintenance reminder, fault alarm, self-diagnosis, data storage, and data upload , data monitoring, data comparison and other intelligent functions; dual temperature and dual pressure control design, dual anti-dust and error prevention, ensuring stable operation of the machine and system; equipped with pulse stabilization device, can effectively monitor the flow signal of the sand mill.