SU1207520A1 - Screen - Google Patents

Description

I

The invention relates to devices that can be used in automatic process monitoring and control systems in stone crushed stone crushing and screening plants, and is intended to control the size of crushed material in order to control the size of the discharge gap of crushers used for fine and medium crushing.

The aim of the invention is to provide the possibility of sampling to control the output of a large class.

Fig, 1 shows the roar, side view; in fig. 2 - the same plan view; in fig. 3 is a diagram of the arrangements of t g and levers with a duct for one revolution of the shaft.

The screen is a block of mechanisms (Fig. 1 and 2) installed under the chute 1 of the crusher on the frame of the discharge conveyor 2. The screen contains box 3 with a hook 4 and a sieve for receiving and sorting bulk material, an inclined frame 6 with an axis 7, mounted on the frame 6 in its highest part, shock-absorbing springs 8, the vibration actuator 9, a pair of t g 10, 11 and levers 12, 13, pivotally interconnected. The free ends, t g 10 and 11 are hinged on the box 3, and the free ends of the levers 12 and 13 are rigidly mounted on the ends of the shaft 14. The screen is equipped with an additional drive 15, kinematically connected to the shaft 14 by means of a gear 16, chain transmission 17 with sprockets 18 and 19, which is necessary for moving the box 3 to certain positions. Gr is also provided with a limit switch 20, designed to stop the box in the initial position I (Fig. 3) and the weight sensor. The weight sensor is installed under the upper part of the inclined frame 6 and consists of a bucket 21 with an opening bottom, a system of t g 22, pillars 23, a lever 24, at one end of which a bucket 21 is mounted, and on the other - a counterweight 25, and a limit switch 26. Sensor the weights are used to weigh the sample and command the actuator to adjust the size of the crusher's discharge opening. The bottom of the bucket 21 is equipped with an actuator, which during command

the sample is otkrygoet bottom and closes during the start of the drive 15.

The roar works as follows

During the operation of the crusher, when

crushed material comes from under it, the vibrator actuator 9 is simultaneously turned on, which oscillates box 3 with a sieve 5 and frame 6, and an additional drive

15, which, through a gearbox 16, a chain drive 17 with sprockets 18 and 19, causes shaft 14 to rotate. When shaft 14 rotates, levers 12 and 13 push rods 10 and 11 towards estrus 1. Ta and 10 and 11 move box 3 from the original position I (Fig. 3) on the inclined frame 6 under the chute 1 in the position I. During the stay of the box 3 under the chute 1, crushed material is collected into it and simultaneously sifted through a sieve 5 under the action of the vibrating drive 9. During the reverse movement of the box 3 The position of the I pair t g 10, 11 and the levers 12, 13 is in the W position. In this position, the hook 4 of the box 3 in dit into engagement with axis 7, and further movement of the rods 10, 11 and levers 12, 13 of the box 3 performs a rotation about an axis 7

BEFORE IV. In this position, the box 3 is freed from the permissible product that enters the bucket 21 of the weight sensors. Further movement of t g 10, II and levers 12

and 13 brings the duct 3 to its initial position 1. At this time, the lever 12 comes into contact with the limit switch 20, as a result of which the auxiliary drive I5 and the vibrodrive 9 are turned off. The material caught in the bucket 21 acts on the lever 24, which through the limit switch 26 issues a command to regulate the size of the crusher's discharge gap, provided that the weight of the sample is equal to or greater than the reference, and the command to discharge the sample through the bottom of the bucket 21, the bottom of the bucket 2 is equipped with an actuator that

the time of the command to reset the sample opens the bottom, and closes it during the start-up of the additional drive 15.

The sampling and discharge of the sample proceeds in one revolution of the shaft 14. The time of one revolution of the shaft 14 is set depending on the performance

12075204

(the volume of incoming crushed product from under the crusher), the parameters of box 3 and sieve 5, taking into account the efficiency of screening.

1317 1B

FIG. 2

fig.Z

Claims (2)

1. SCREWER, comprising a box with a sieve, an inclined frame with springs and a vibratory drive, characterized in that, in order to enable sampling to control the output of a large class, it is equipped with a weight sensor mounted under the upper part of the inclined frame, an axis fixed to frame on the side of the weight sensor, additional drive, shaft, limit switch and a pair of rods and levers pivotally connected to each other, and the free ends of the rods pivotally mounted on the box mounted on the frame with the possibility of reciprocating room and rotation around the axis, and the free ends of the levers are rigidly mounted at the ends of the shaft kinematically connected with an additional drive, while one lever is installed with the possibility of contact with the limit switch. 2. The roar of pop. ^ characterized in that the weight sensor is made in the form of a lever, a limit switch and a bucket mounted on one end of the lever, the other end of which is equipped with a counterweight and is installed with the possibility of contact with the limit switch. SU .1207520 figure 1