SU977017A1 - Vibratory mill grinding unit - Google Patents

Description

The invention relates to the grinding of ores, - rocks and materials, ¹ namely, mills of vibrational action, and can be used in mining, chemical, pi-. general and other industries, in ore dressing, production of building and special materials.

Known vibration mill containing a grinding pipe, movably connected by supports of its rotation with the supporting frame, the pathogen and the drive rotation of the pipe [1].

However, the known mill is characterized by insufficient intensity of the operating mode and the complexity of the design of the drive, kinematically connected with the pathogen through the transmission.

The purpose of the invention is the intensification of the operating mode and simplification of the drive.

This goal is achieved by the fact that in a vibration mill containing a grinding tube, motionlessly fixed by bearings of its rotation with a supporting frame, the exciter of the last drive of rotation of the pipe, the last 30 is made in the form of an elastic buffer mounted on the frame eccentrically, with a gap relative to the pipe 5 with the possibility of periodic eccentric hits of the pipe on the buffer.

The buffer is attached to the frame by means of an elastic element with the ability to control the size of the gap and stiffness.

The elastic element can be made in the form of a leaf spring - springs.

In addition, the mill can be equipped with an additional buffer mounted diametrically opposite to the main one.

Figure 1 shows a structural diagram of a mill; figure 2 - diagram of the drive; Fig.Z is a diagram of the action of the drive.

The grinding pipes 1 and 2 (Fig. 1) are pivotally connected to each other, and with the help of the frame 3 with the help of levers 4 can rotate in the supports 5, bearing, hinges 6 and rings fixed on the pipes 25 7. The levers are connected to the frame by hinges 8. Supports together with the pipes are spring-loaded with elastic elements 9. The vibration exciter 10 is mounted on the frame and the connecting rods 11 and 12 are connected to the hinges 6 of the pipe supports. The engine 13 (Fig. 2) is connected by a clutch 14 to the drive shaft 15, the eccentrics 16 and 17 of which are pivotally connected to the corresponding connecting rods 11 and 12. On the cross members 18 of the frame (Figs. 2 and 3), it is installed, for example, by 5 elastic plate or the springs 19 with the clamped end 20 of the buffer 21. It is installed with the initial impact gap relative to the surface of the pipe and eccentricity relative to the vertical axis 22 of the pipe. The clearance can be positive (clearance) or negative (interference). The lower right buffer of FIG. 3, if necessary, is supplemented by the upper left one, mounted diametrically opposite to the first.

During the operation of the mill, when the drive shaft rotates, the pipes oscillate in the vertical plane anti-jq phase, and each of the pipes periodically collides with the corresponding buffer. At the same time, the buffer (for example, the upper left, FIG. 3) bends to the left on the spring 19, reporting due to friction force 25 torque and rotation of the pipe counterclockwise (this position of the pipe and buffer is shown in dashed lines in FIG. 3). Then the pipe moves down, the upper buffer returns to. the initial position, and the pipe then collides with the lower Right buffer, receiving similarly, by another impulse of rotation moment in the same direction, etc. , 35

As a result, each pipe, along with vibrations in a vertical plane, together with the Supports, impulse rotation is communicated in these supports 5 around its longitudinal axis. With two 40 swing buffers, two swing pulses are reported per swing.

By adjusting the magnitude of the impact gap and the stiffness of the spring, it is possible to. , beat the optimal rotation parameters taking into account the reliability of the buffers.

As can be seen, the torque is formed by an extremely simple mechanism due to the eccentricity of the impacts of the cn tube on the buffer; With circular pipe vibrations, the number of buffers can be more than two. The buffer can also be made in the form of a block rubber-metal element.

High-frequency pulsed intermittent) rotation of the pipe intensifies the operation of the mill.

Elastic collisions of pipes with buffers facilitate the work of the vibration exciter, especially in the area of shock-vibration resonance, and the maximum simplification of the design of the drive for rotating the pipes reduces the cost of manufacturing, installation and maintenance of the mill

Claims (4)

The invention relates to the grinding of ores, rocks, and materials, namely, vibrating shaft mills, and can be used in mining, imicheskop, pi-. coniferous and other industrial sectors, in the enrichment of ores, the production of construction and special materials. A vibratory mill is known, comprising a grinding tube, connected by means of its supports of rotation to the carrier frame, a vibration exciter and a drive of the rotation of the tube 11. However, the known mill is characterized by an insufficient intensity of the mode of operation and the complexity of the drive design, kinematically connected with the pathogen through transmissions. The purpose of the invention is to intensify the operation mode and simplify the drive. The goal is achieved by the fact that in a vibration mill containing a grinding pipe, fixedly connected through its supports of rotation with the supporting frame, the oscillation pathogen and rotational drive of the pipe, the latter is made in the form of an elastic buffer mounted on the frame eccentric, with a gap relative to pipes with the possibility of periodic centrifugal strikes of the pipe along the buffer. The buffer is attached to the frame by means of an elastic element with the ability to adjust the size of the gap and stiffness. The elastic element can be made in the form of a leaf spring - spring. In addition, the mill can be equipped with an additional buffer, set diametrically opposite to the main one. Figure 1 shows the structural scheme of the mill; FIG. 2 is a drive diagram; FIG. 3 is a flow chart of the drive. The grinding Tpy & j 1 and 2 (Fng.1) are pivotally connected to each other and to the supporting frame 3 by means of levers 4 can be rotated in supports 5, bearing, hinges 6 and fixed on the pipes by rings 7. The levers are connected to the frame by hinges 8. The supports, together with the pipes, are spring-loaded with elastic elements 9. The vibration exciter 10 is mounted on the frame and the connecting rods 11 and 12 are connected to the hinges of 6 support pipes. The engine 13 (FIG. 2) of the coupling 14 is connected to the drive shaft 15, the eccentrics 16 and 17 of which are pivotally connected to the corresponding connecting rods 11 and 12. On the crossbars 18 of the frame (FIGS. 2 and 3) it is installed by means of, for example, an elastic plate or a spring 19 with a clamped end 20, buffer 21. It is installed with an initial impact gap relative to the pipe surface and an eccentric risk relative to the vertical axis 22 of the pipe. The gap can be positive (lumen) or negative (nat g). The lower right buffer of FIG. 3, if necessary, is supplemented with the upper left one diametrically opposed to the first one. During the operation of the mill, as the drive shaft of the pipe rotates, the tubes oscillate in a vertical plane in an antiphase manner, and each of the tubes periodically collides with a corresponding buffer. At ET.OM, the buffer (e.g., upper left) bends on spring 19, left, jointly due to the friction torque and turning the pipe counterclockwise (this position of the pipe and buffer is shown in FIG. 3 by dashed lines. Then the pipe moves down, the upper buffer returns to its original position, and the pipe further collides with the lower Right buffer, receiving in the same way another momentum pulse in the same direction, etc. As a result, each pipe along with fluctuations in the vertical flat tee together with supports Pulse rotation in these supports 5 is allowed around its longitudinal axis. With two rotation buffers, two rotation pulses are reported per oscillation. By adjusting the magnitude of the impact gap and the stiffness of the peccopja, it is possible to beat the optimal rotation parameters, taking into account the reliability of the buffers. , the torque is formed by an extremely simple mechanism due to the eccentricity of the blows of the tube along the buffer. With circular oscillations of the tube, the number of buffers can be more than two. The buffer can also be made in the form of a block rubber metal. wow element High-frequency pulse intermittent) rotation of the pipe stimulates the operation of the mill. Elastic collisions of tubes with buffers facilitate the operation of the vibration exciter, especially in the area of shock-vibration resonance, and maximally simplifying the design of the drive of rotating tubes reduces the cost of manufacturing, installing and maintaining the mill. Claim 1. Vibration mill, containing a grinding tube, movably connected by means of its supports to the carrier frame, a vibration exciter and a tube rotation drive, characterized in that, in order to intensify the operating mode and simplify the drive, the latter is made in the form of an elastic the buffer mounted on the frame is eccentric, with a gap relative to the pipe with the possibility of periodic out-of-center blows of the screw over the buffer. 2. The mill according to claim 1, wherein the buffer is attached to the frame by means of an elastic element with the possibility of adjusting the size of the gap and stiffness. 3. Mill according to claim 2, characterized in that the elastic element is made in the form of a leaf spring - a spring. 4. The mill according to claims 1-3, about tl and tea with the fact that it is provided with an additional buffer, installed diametrically opposite to axial one. Sources of information taken into account in the examination 1. USSR author's certificate in accordance with application 2946280 / 29-3Зг cl. B 4) 2 C 19/16, 1980. 5 6 IB ff. rV / / 4 (Par.1 18 IS 22 eleven a.