The main working part of the chocolate ball mill machine is a rotating cylinder mounted on two large bearings and placed horizontally.The cylinder body is divided into several chambers with a partition board, and each chamber is equipped with a grinding body of a certain shape and size.
The role of the chocolate ball mill machine abrasive
When the chocolate ball mill machine rotates, the grinding body is attached to the lining surface of the inner wall of the cylinder under the action of centrifugal force and the friction force generated by the lining surface of the inner wall the cylinder.
It rotates together with the cylinder, and It is brought to a certain height and falls freely under the action of gravity. When falling, the grinding body is like a projectile, and the material at the bottom will be crushed by impacting the material. The cyclic movement of the grinding body rising and falling is repeated.
In addition, during the rotation of the chocolate ball mill machine, the grinding body also slides and rolls. Hence, the grinding action occurs between the grinding body, the lining plate, and the material to make the material fine. Due to the continuous feeding of new materials at the feed end, the material surface difference between the feed end and the discharge end can force the material to flow.
The axial thrust generated by the impacting material when the grinding body falls also causes the material to flow. In addition to the chocolate ball mill, The airflow movement in the mill also helps the material flow. Therefore, although the mill barrel is placed horizontally, the material can slowly flow from the feed end to the discharge end to complete the grinding process.
The Basic State Of Grinding Body Movement
The rotation speed and filling rate of the chocolate ball mill machine cylinder greatly influence the grinding material. When the cylinder rotates at different speeds, the grinding body in the cylinder may appear in three basic states. If the rotation speed is too slow, the grinding body and the material will be brought to a height equal to the dynamic friction angle by the cylinder due to friction, and the grinding body and the material will slide down.
called the “pouring state,” it has a grinding effect on the material, but the impact on the fabric is small, so the grinding efficiency is not good; if the rotation speed is too fast, the grinding body and the material are attached to the cylinder under the action of its inertial centrifugal force Rotate together (circular motion), called “turnover state,”
The grinding body has no impact or effect on the material. The rotation speed of the chocolate ball mill machine is relatively suitable. After the grinding body is raised to a certain height, it is thrown down, called the “throwing state.” The grinding body has a greater impact on the material and Grinding effect, high grinding efficiency.
In fact, the movement state of the chocolate ball mill machine is very complicated. It is attached to the upward movement of the barrel wall of the mill; slides down along the barrel wall and the grinding body layer; similar to the throwing motion of the projectile; around its axis, Rotational motion and rolling, etc. The basic effect of the grinding body on the material is the result of the comprehensive impact of various activities on the material, the main ones of which can be attributed to effects and grinding.
Motion Analysis In Chocolate Ball Mill Machine
The grinding function of the ball mill is mainly the impact and grinding of the material by the grinding body to further understand the essence of the action of the grinding body on the material during the operation of the mill to determine the working parameters of the mill, such as the appropriate operating speed, power consumption, production capacity, the filling amount of the grinding body, and to grasp the various factors that affect the efficiency of the chocolate ball mill machine factors, the force of the cylinder and the strength calculation, etc.
When the mill is working normally, there are only two movement trajectories of the grinding body in the cylinder according to its position: one is layer by layer with the geometric center of the cylinder cross-section as the center and follows the cylinder according to the concentric arc trajectory. The body rotates upwards; the other is to descend layer by layer according to a parabolic trajectory.
The relative sliding between chocolate ball mill machines and between the layers of the grinding body is extremely small, which is ignored in the specific calculation;
The influence of the material in the mill barrel on the movement of the grinding body is ignored; the grinding body is a mass point, so the outermost radius of gyration can be expressed by the effective inner diameter of the cylinder.
The Production Capacity Of The Chocolate Ball Mill Machine
many factors affect the production capacity of chocolate ball mill machines, such as material properties, the particle size of materials to be milled, required product fineness, uniformity of feeding, and filling degree in the mill.
In addition, it is related to the structure of the mill, such as the length and diameter of the mill cylinder, the number of bins, the ratio of the distances between the containers, the form and effective section size of the partition plate, the type of grinding body and the shape of the lining plate. There is also the adoption of new processes and technologies, which are also effective measures to improve the production capacity of chocolate grinders.
The material entering the chocolate ball mill machine is brittle, easy to grind, and has a high production capacity; otherwise, the production capacity is low. When the particle size of the material to be milled is large, the first bin of the chocolate ball mill machine must be loaded with more large steel balls so that the grinding body can achieve the purpose of crushing the material, and the first bin can play the role of a crusher to a certain extent.
Resulting in an unreasonable grinding process because the crushing efficiency of the chocolate ball mill machine is much lower than that of the crusher. Therefore, reducing the grinding particle size can improve the mill’s production capacity and lower power consumption.
If the feeding is uniform and the feeding amount is appropriate, the production capacity of the chocolate mill will be improved. Too little or too much feed will reduce production capacity. Because when the feeding amount is too small, when the grinding body falls, not all impact the material, but some of the grinding bodies collide and do useless work. It cannot be improved.
Adoption Of New Technologies
The grinding system is automatically controlled. According to the noise of the chocolate ball mill machine, the electric ear method is used to manage the electromagnetic vibrating feeder or the belt feeder to control the appropriate amount of materials in the mill and automatically adjust the material to be added evenly so that the amount of materials in the mill is always in the best state, which can improve the chocolate ball mill machine output.
Strengthen the ventilation inside the chocolate ball mill machine. The mill has a certain wind speed. The fine powder produced in the grinding process can be taken away by the airflow in time, reducing the fine powder’s buffering effect. It can improve the grinding efficiency, and the product quality will not be affected.
When the ventilation is good, the water vapor in the chocolate ball mill machine will be discharged in time, the grate holes of the partition board will not be blocked, the adhesion phenomenon will also be reduced, and the temperature in the mill can be reduced, which is beneficial to the operation of the mill and the improvement of product quality.