SU1701399A1 - Device for automatic control of screen operation - Google Patents

Abstract

The invention relates to the diagnosis of classifying equipment and m. used in the mining, coal, construction and other sectors of the national household. The purpose of the invention is to increase the reliability of the screen by improving the information content of the position of the deck (D) of the screen. The device contains an oscillation transducer D 5 to an electrical signal, a control and signaling unit (BEAD), as well as two-position sensors, made in the form of three normally open electrodes (E) one above the other. The upper E 10 is made integral with the D 5 screen and is grounded, and the middle E 11 is spring-loaded relative to the lower E 12. The lower E 12 is connected to the output of the D 5 oscillation converter, and the middle E 11 is connected to the BEAD. When the screen is operating in the set mode E 10, 11 and 12 sensors are normally open. When one of the rattles is extended, the D-5 angle is lowered. At the same time, the upper E 10 and the middle E are closed, and a signal is received at the input of the BEADS, which causes the light bulb to ignite. In the event of a delayed response to the signal about the extension of the suspension and its breakage, D 5 remove the spring element 13 and the E 10-12 close. At the same time, the BEADGE through the starting device turns off the electric motor. 1 hp f-ly, 2 ill. 5 / fe x | Oh oj oh che ./ "

Description

FIG. 2

The invention relates to the diagnosis of classifying equipment and can be used in the mining, coal, construction and other sectors of the national household.

The purpose of the invention is to increase the reliability of the operation of the screen by improving the information content of the position of the screen of the screen.

Figure 1 shows the functional diagram of the device for the automatic control of the operation of the screen; Fig. 2 illustrates the structure of a two-louvered three-electrode sensor.

The device for automatically controlling the operation of the screen comprises a converter of the oscillations of the screen deck into an electrical signal with an output of 2, comprising an inductor t t / h 3 and a measles 4 fixed on the screen 5 of the screen; control and signaling unit 6 with control input 7 and signal input 8; two-posed sensors 9, containing normally open electrodes located one above the other. The upper electrode 10 is made integral with the deck 5 (the deck itself can also be used as the electrode) and is grounded, the middle electrode 11 is spring-loaded relative to the lower electrode 12 by means of a sealing hollow elastic (e.g. rubber) element 13 installed between them. Electrodes 11 and 12 are placed under deck 5 thunder, for example, and its frame. In this case, the lower electrode 12 is mounted on an insulating base 14 (for example, from a PCB) and connected to the output 2 of the transducer 1 of the oscillation of the deck 5 of the screen, and the middle electrode 11 is connected to the signal input 8 of the control and signaling unit. The output 2 of the transducer 1 of the oscillations of deck 5 is connected to the control input 7 of the control and signaling unit 6, the output of which is connected to the starting device 15 of the throttle motor 16.

Converter 1 is made on the basis of the serial magneto-inductive sensor DM-2. The control and signaling unit 6 is made on the basis of the BCS-2 UHL-3 resistance control unit.

The device for automatic control of the operation of the screen operates as follows.

Before operation, deck 5 of the screen is mounted on cable suspensions (not shown) at a certain angle, for example, about 7 °, to the horizontal plane. Two-electrode three-electrode sensors 9 are installed under the deck 5 at its corners

with a ground loop, while the electrodes 10-12 normally open

P.) and the operation of the screen in a given mode, the deck 5 moves in a horizontal

plane under the influence of the oscillator (not shown). Anchor 4 transducer 1, mounted on deck 5, induces an emf inductance coil 3. On the control input 7 of the control and signaling unit 6

an electrical signal appears. In block b, a relay (not shown) is turned on at the output, blocking the starting button of the starting device 15 with its contacts, including an electric motor 16. Electrodes 10-12

The sensors 9 are normally open, the control lights of the control and alarm unit 6 are off.

When lengthening one of the racks, the corresponding angle of deck 5 is lowered, and the upper grounded ejectrode 10 and the middle potential electrode 11 of the sensor 9 are closed. Installed in the zone of this suspension under the deck

5 The signal input 8 of the unit 6. receives a signal, the signal light comes on and the service personnel is notified of a process disturbance at a rumble. The length of the padding is reduced to the initial position, and the sig- nal on Pok 6 disappears.

In case of a delayed response to the signal about the suspension lengthening and its breakage, the deck 5 under the action of its own

The weight, supported by the corresponding sensor 9, compresses the hollow elastic element 13 and the electrodes 10--12 are closed Electrode 12. Closed with a grounded electrode 1C through the potential electrode 11, closes the output 2 of the oscillator 1 of the deck 5 of the screen. In this case, the current induced in the coil 3 of the inductance of the converter 1, is discharged n: ground, and the control and signaling unit 6 through

The starting device 15 shuts off the electric motor 16.

Claims (1)

Claim 1. Device for automatic control of screening operation, including screening screen oscillation converter into electrical signal, control and signaling unit, characterized in that, in order to increase screener reliability by improving information level of screener screen position, it is equipped with on-off sensors made in the form of three normally open electrodes arranged one above the other, while the middle electrode is spring-loaded relative to the NIZHNRGO electrode, and the electrode is inen with deck i rohot and zaz ° milen prschsg. the bottom of the genus is connected to the output of the oscillation converter of the deck of the roar and the middle one with the control and signaling unit 2 The device is pop1 characterized by the fact that the middle electrode is spring-loaded relative to the bottom hologgergrom of the hollow sealing elastic element installed between them. FIG. 7