3 roll mill|Failure of the roll shaft & pulley

Three Roll Mill

The 3 roll mill is a grinding and dispersing equipment, which plays an irreplaceable role in improving the quality of coating products.

Details of Three Roll Mill

  • Two types: handwheel and digital control gap
  • Safe scraper socket, Emergency-stop
  • Space-saving desktop models
  • Drip tray for easy cleaning

Application: Paint, Adhesive, Battery, Pharmaceutical industry, Cosmetic

The precise design and strict requirements of the parts enable it to continuously and stably carry out micron-level grinding and dispersion. The 3 roll mill The unique online gap correction and formula menu functions make the equipment more flexible in the operation process. The 3 roll mill adopts a number of safety protection measures to ensure operation safety during the production process.

The most common one is the failure of the roller shaft and pulley of the 3 roll mill. When encountering these problems, how should users analyze such problems?

The roller shaft of the 3 roll mill is not only made of chilled cast iron centrifugal casting but also can be matched with ceramic rollers, marble rollers, etc., with the cooling device of the 3 roll mill, which can quickly cool the heat generated during work. Processing, to achieve the continuity of the three-roll mill work, but also to ensure the material in the process of grinding, color difference, or damage.

Internal wear problem of the 3 roll mill screw

When the working surface of the worm inside the screw mechanism is worn out, there will be gaps on the surface of the meshing teeth of the turbine, thereby increasing the lift angle of the screw. During the operation of the 3 roll mill, it will lead to the self-locking ability of the 3 roll mill. lose the capacity of. When the worm gear and worm are loose, during the operation of the 3 roll mill, there will be a phenomenon that two screw mechanisms cannot be performed synchronously, thereby accelerating the wear rate of the grinding roll.

Bolt cap problem with 3 roll mill

When the bolt cap is missing, damaged, or loose, it will easily affect the adjustment device of the 3 roll mill, resulting in problems such as adjustment failure of the adjustment device and failure of normal connection, so that the 3 roll mill cannot perform debugging. instruction.

three roll mill

Spring problem with 3 roll mill

When the 3 roll mill runs for a long time, there will be problems of reduced elasticity and fatigue wear. In the process of overhauling the grinding machine, the grinding roller will be displaced, the spring cannot keep up with the overall running speed of the grinding machine, and the accuracy of the debugging work cannot be guaranteed.

3 roll mill chute wear

When the slideway of the 3 roll mill is worn, it will cause a certain resistance to the operation of the mill, increase the frictional resistance during operation, and make it unable to move normally. It has the same principle as the above spring failure. When the parallelism between the rollers of the grinder is significantly reduced, if no effective treatment measures are taken in time, the rollers on both sides will contact friction, increase the tooth pattern wear of the rollers, and ultimately reduce the overall work efficiency of the grinder.

In the process of use, the possible problems of the belt part of the 3 roll mill mainly include the equipment problem of the belt, the equipment problem of the pulley, and the problem of the pulley groove of the pulley. The main reason for these problems is that the equipment of the pulley is not in place, and the belt may be too tight or relatively loose during the installation process. How to solve it?

Belt equipment problem with 3 roll mill

The belt equipment problems of the 3 roll mill are mainly manifested in the different lengths of the belts, the inability to match, the inappropriate belt tension, and the rolling of the belts. Therefore, when installing the grinding machine belt, we must choose the appropriate length of the belt to prevent the problem of vibration in the transmission; at the same time, we must also control the tightness of the belt. When the belt tension is too large, it is easy to cause damage to the bearing. If the tension is too small, it is easy to cause slippage. The pulley will cause the side bending force of the drive shaft during the transmission process, resulting in the problem of shaft wear. The belt tension will decrease during long-term operation. In this case, it is necessary to detect the tightness of the belt in time.

Problems with the equipment of the pulley of the 3 roll mill

The end faces of the two pulleys are on different faces. When they are not on the same face, the belt wear will be accelerated and the belt will fall off. When the hub is not properly fixed and the positioning bolts are too loose, displacement will occur during the operation of the pulley, thereby changing the end face of the pulley.

3 roll mill pulley groove problem

Since the cross-section of the V-belt of the grinder is trapezoidal, the working surfaces on both sides rely on the mutual friction of the inner side walls of the pulley to generate power during operation. Therefore, the long-term operation of the pulley will wear the inner side of the pulley groove and turn the inner groove into a concave surface. , reducing the working surface area, it is easy to cause the problem of belt slippage, so we should check and replace the pulley in time.

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Guidelines For Three Roll Mill

Three roll mills are widely used in a variety of chemical industries, from medium to high viscosity productions. FRANLI machine can break open all kinds of pigment, UV ink, offset ink, decorative paints, and Lubricants, it also can catch the greatest fineness in cosmetics/ lipstick and electronics industries. 

Lab Three Roller Mill
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Three Roll Mill For Grease

The three roll mill plays a vital role in the grinding of grease. Grease is essentially a kind of lubricating oil, which is a solid or semi-solid product formed by one or more thickeners through the grinding and dispersing action of a three roll mill.

heating three roll mill
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Three Roll Mill For Attapulgite | Glue Grinding Equipment

Three roll mill is the main equipment for grinding attapulgite. The attapulgite is ground and dispersed mainly because it is a natural colloid. Even if the size of the attapulgite reaches 0.1mm, it cannot be easily dispersed by the machine, so the final state of attapulgite formation has been greatly developed.

manual three rolll mill trs9
Guidelines For Three Roll Mill

Rolls of a three-roll mill

The three-roll mill is mainly used for grinding materials of various viscosities and is one of the best wet grinding equipment. The dispersing and emulsification effect of the three-roll mill is excellent, especially for ink, paint, colloid, chocolate, plastic, cosmetics, etc., whether it is liquid slurry or paste material, the three-roll mill can work easily.

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