RU1803182C - Inertia mill - Google Patents

Abstract

Usage: in the chemical, construction, food and other industries. Summary of the invention: the mill is equipped with movable weights mounted on eccentrics between the axis of rotation of the eccentric shaft and the axis of rotation of the eccentric on one axis coinciding with the axis of rotation of the eccentric shaft and the axis of rotation of the eccentric, or on brackets mounted in the common plane of the axes passing through centers of rotation of the eccentric shaft and eccentrics. 4 ill.

Description

The invention relates to mining equipment, and more particularly, to the production of activated ground materials.

The purpose of the invention is to reduce the metal consumption of the structure and increase the service life of the bearing units.

This goal is achieved in that the design is additionally equipped with movable masses that are mounted on eccentric shafts between the axis of rotation of the shaft and the axis of rotation of the eccentric on one axis coinciding with the axis of rotation of the eccentric shaft and the axis of rotation of the eccentric or mounted on additional brackets located in the common plane of the axes passing through the centers of rotation of the shaft and cam. Both options can work in pairs.

Figure 1 shows a General view of the mill; figure 2 is a section aa in figure 1; in Fig.3 node I in Fig.2; in Fig.4 - section BB in Fig.1.

The inertial mill consists of a grinding drum 1, in which the process of grinding and activation of the material is carried out. Drum 1 is mounted on two eccentric shafts 2 with drives 3 (the drives are equipped with constant torque systems). Counterweights 4 are mounted on the eccentric shafts 2 and balance the inertial forces of the moving masses, including the inertial forces from the maximum load of the chopping drum 1. Moving loads 5 are designed to balance the inertial forces while reducing the load (power) of the chopping drum 1 and are mounted on the eccentric 7 using springs 6 the eccentric shaft 2 or on the brackets 8 mounted on the eccentric shafts 2. The brackets 8 lie in the common plane of the axes passing through the centers of rotation

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each eccentric shaft 2 and eccentrics 7. The tensioning devices 9 and 10 allow you to adjust the balancing forces (for each particular design, the design of the tensioning devices may be different).

The mill operates as follows.

The material enters the grinding drum 1 of the inertial mill, each receives rotation from two drives 3, whose electric motors are equipped with constant torque systems, through two eccentric shafts 2.

With a constant maximum power load, the moving parts of the mill are balanced by counterweights 4, while the movable loads 5, which are mounted on the eccentric 7 or on the brackets 8, occupy a position closer to the rotation center of the eccentric shaft 2, which is provided by tensioning devices 9 and 10 and springs 6

When reducing the power load, the drive 3 with a constant-torque system provides an increase in the angular velocity of the eccentric shaft 2. Moving loads 5 - are moved along the radius from the center of rotation due to centrifugal force. Spring 6 extends. Center of mass of rotating

nodes changes its position. The system is balanced.

As the power supply increases, the angular speed of the eccentric shaft 2 decreases and, under the action of the springs 6, the movable loads 5 take their initial position. The system is balanced.

Next, the cycle repeats.

In the proposed inertial mill, by reducing the inertial loads on the bearing units (balancing the system), the metal consumption is reduced and the service life is increased.

Claims (1)

The claims An inertial mill comprising a grinding drum, eccentric shafts with counterweights and a drive, characterized in that, in order to reduce the metal consumption of the structure and increase the service life of the bearing units, the mill is equipped with movable weights mounted on eccentrics between the axis of rotation of the eccentric shaft and the axis of rotation of the eccentric on one axis coinciding with the axis of rotation of the eccentric shaft and the axis of rotation of the eccentric or on brackets mounted in the common plane of the axes passing through the centers of rotation of the eccentric spiked shaft and eccentrics.