Overview
Three-roll grinder is referred to as three-roll machine, which can be divided into experimental Three-roll grinder and production Three-roll grinder. This equipment is suitable for the manufacture of paints, inks, pigments, plastics and other Stocks, and is an effective grinding and dispersing equipment for high viscosity materials.
Features
1. Install horizontally with three rollers, and achieve grinding effect through surface extrusion and friction at different speeds
2. Roller material is cold hard alloy steel centrifugal casting, Surface Hardness above HS70 °
3. The diameter of the roller is ground with high precision, which can make the fineness of grinding reach about 15μm
4. Steel drum can be hollow water chilled down, control Operating temperature
5. Suitable for grinding and dispersing of high viscosity materials
Principle
The three-roll grinder achieves the grinding effect by pressing the surfaces of the three horizontal rollers against each other and rubbing at different speeds. The swirl/spin directions of the three rollers are different, the Rotation speed increases sequentially from the back to the front, and the material is added between the middle and rear rollers. After grinding, it is scraped off by the Drawdown blade installed in front of the front roller.
Applications
Stock and paste grinding of paints, inks, pigments, plastics, cosmetics, soaps, ceramics, rubbers, etc
Steps
1. Check whether the position and locking of each component are normal, inject lubricating oil, and turn on the power supply
2. Adjust the front, rear, left and right handwheels to observe whether the roll linkage is normal
3. Remove the dirt on the roller surface, loosen the baffle plate and pinch your hands
4. Adjust the gap between the front, rear and middle rollers to 0.5 mm, and start the power supply to idle for 1-2 minutes
5. After starting the operation, adjust the gap between the middle and rear rollers to 0.3 mm, press the baffle plate tightly, and add it to the Stock.
6. Adjust the front roller handwheel to make the front roller contact the middle roller, and lock the fixing nut after uniform chromadizing on the surface
7. Adjust the angle of the material plate so that it is properly pressed lightly on the roller surface, and the Stock is discharged evenly
8. Check the uniformity of discharge and the particle size of the finished product, and continue to fine-tune the front and rear rollers to meet the requirements of the finished product particle size
9. Remove the paint in time after the work stops, clean the test roller and related parts, loosen the Drawdown blade and baffle plate, apply a small amount of oil, and cover the wax paper protection
Notice
• The surface of the roll is strictly prohibited from bumping and scratching, and all kinds of metal objects and hard sundries are strictly prohibited from entering the running roll
• Roll Operating temperature range: Ordinary -5 ℃~ 100 ℃
• Roller and roller gap range in normal Working time: middle and rear roller gap 0.02~ 0.25 mm, middle and front roller gap 0.01~ 0.25 mm
• The peak angle of the baffle is strictly prohibited from bumping, and the contact pressure with the roll surface should be appropriate during adjustment
• Thin paint film in the middle of the roller, thick at both ends may be convex in the roller, need to adjust the amount of water chilled down
• The paint film at both ends of the roller is thin and the middle paint film thickness needs to be adjusted to chill down the water volume
• No driving without chilling down water
• It is strictly forbidden to enter the middle of the two rollers. If you accidentally enter, you need to stop and take it out urgently.
• Pay attention to adjusting the front and rear rollers at any time to prevent the roller line from expanding and causing it to swell to death
• The copper baffle can't be pressed too tightly, add lubricating oil at any time
• Pay attention to the bearing temperature at both ends of the roller, generally no more than 100 ° C
• Before operation, check whether the power line tube and switch button are normal, and whether the cooling circulating water is available
• Pay attention to whether there is any abnormality during operation and stop immediately
• The oil storage drum should be fixed during operation to avoid oil overflow
• The operator should always pay attention to whether there is any debris on the roller, and if so, stop the machine immediately
• Operators should be replaced when they leave their posts
• After the production is completed, clean the roller and surrounding hygiene in time, and turn off the relevant power switch
