1、 Installation and commissioning precautions

1. Basic stability
   • Ensure that the equipment is placed on a horizontal and sturdy tabletop, avoiding vibration or displacement.
   • The motor and grinding head of the split colloid mill need to be independently fixed to avoid resonance and component loosening.
2. Alignment of transmission components
   • When connecting the motor and grinding head through a coupling, it is necessary to ensure that the axial concentricity deviation is ≤ 0.1mm, otherwise it may cause vibration or bearing damage.
   • Regularly check whether the elastic pad or diaphragm of the coupling is worn and replace it in a timely manner.
3. Electrical safety
   • The power supply voltage should match the rated voltage of the motor (such as 380V/50Hz), and a leakage protection device should be installed.
   • The grounding wire must be reliably connected to prevent static electricity or leakage risks.
4. Cooling and lubrication
   • Mechanical seals need to be equipped with a cooling water circulation system (such as water temperature ≤ 30 ℃, flow rate ≥ 2L/min) to avoid seal overheating and failure.
   • Regularly check the bearing grease (such as adding high-temperature lithium grease every 3 months) to prevent dry wear.

2、 Operation precautions

1. Material pretreatment
   • The material needs to be pre filtered to remove hard particles (such as sand, gravel, and metal shavings) to prevent damage to the dynamic and static grinding discs.
   • Control material viscosity (such as ≤ 10000cP), excessive viscosity may cause motor overload.
2. Start and run sequence
   • Correct orderFirstly, start the cooling water and slowly feed the motor (to avoid starting without load).
   • Shutdown sequenceStop feeding and continue running for 5-10 minutes (empty the remaining material). Turn off the motor and turn off the cooling water.
3. Speed and clearance adjustment
   • Adjust the gap between the dynamic grinding disc and the static grinding disc according to the material characteristics (usually 0.01-0.3mm). The smaller the gap, the finer the grinding, but the energy consumption and wear increase.
   • Avoid operating at excessive speed (such as when the rated speed is 2900rpm, the actual speed should not exceed 110%).
4. temperature control
   • During the grinding process, the temperature of the material may increase (such as by 10-20 ℃/minute), and it is necessary to control the temperature through cooling jackets or intermittent operation (such as ≤ 80 ℃) to prevent material denaturation.

3、 Cleaning and maintenance precautions

1. Daily cleaning
   • Immediately disassemble the dynamic and static grinding discs and seals after each use, rinse with clean water or solvent to prevent material residue from hardening.
   • Avoid using metal tools to scratch the surface of the grinding disc to prevent scratches.
2. regular inspection
   • weeklyCheck whether the sealing ring and O-ring are aging, and whether the elastic pad of the coupling is damaged.
   • monthlyMeasure the gap between the dynamic and static grinding discs and adjust it to the specified value; Check the bearing clearance and replace it if necessary.
3. Replacement of vulnerable parts
   • The material of the grinding disc (such as stainless steel, hard alloy) needs to be selected according to the characteristics of the material. If the hardness difference is too large, it will accelerate wear.
   • It is recommended to replace the mechanical seal every 6-12 months, depending on the frequency of use and the corrosiveness of the material.

4、 Safety precautions

1. protective device
   • It is strictly prohibited to open the grinding chamber cover or touch rotating parts during operation. A protective cover must be installed and locked.
   • Operators need to wear protective goggles and gloves to prevent material splashing or high temperature burns.
2. overload protection
   • The motor needs to be equipped with an overload protector (such as a thermal relay), which will automatically shut down when the current exceeds 120% of the rated value.
   • When abnormal vibration or noise is detected, immediately stop the machine for inspection to avoid equipment damage or accidents.
3. Material compatibility
   • It is prohibited to grind flammable, explosive, highly corrosive or toxic materials to prevent leakage or explosion risks.
   • When grinding oily materials, it is necessary to regularly clean the cooling system to prevent oil contamination from blocking.

5、 Common Problems and Responses

6、 Long term storage precautions

1. After cleaning the equipment, apply anti rust oil (such as Vaseline) on the surface of the grinding disc to prevent rusting.
2. Store in a dry and ventilated place to avoid damage to electrical components caused by humid environments.
3. Manually rotate the motor shaft every month to prevent bearing jamming.