SU1181682A1 - Automatic control device for settler - Google Patents

Abstract

AUTOMATIC DEFINING DEVICE, containing regulator and actuators of locking and regulating bodies, characterized in that, in order to improve the quality of separation of the suspension, the lower part of the settling tank is made in the form of a cylinder with several cones attached to the lower part of it. installed inside the cylinder, sensors of the upper and lower levels of the granular layer in the cylinder and the electronic unit, while the outputs of the sensors are upper and none it zfovney coupled to inputs of the electronic unit, the output of which is connected via a regulator and reversing starter with executive mechanisms-inflammatory about shut-regulators installed on ushtotnitelnyh cones and collimators positioned in line with the sensors of the upper and lower levels.

Description

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The invention relates to automatic control devices with r-Cl-points and can be used in the potash industry.

The aim of the invention is to improve the separation quality of the suspension, FIG. 1 shows the principle of the settling tank, on the flash drive, 2 is the schematic diagram of the mouth: 1 (;

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Automatic device

a sedimentation tank contains}; hp} a distributor pipe 1 and the same ..ioi: 2, located in the top .g; - a settler., LOWER taper I, fj 3 sedimentation tanks, a stirrer 4 s :: 5 .. cylinder 6, inside of which i- placed gamma emitter 7, fuch-channel gamma-relay, collie .. bit 8, sensors top 9 and -.,.:; yoke 10 levels of granular layer V: chi 6, seal comp.; -; ,: - 11 5 actuators 2 of the shut-off and regulating body 13:. Mounted on sealing seals 11, electronic unit 14 gammpa, i; e, controller 15 and non-contact:) C: arresive starter 16.

The automatic unit; i; -; a: ieHHH; the settling tank works smoothly.

; 1 equivalent suspension is introduced into the p-chagoon through distribution pipe 1 (Fig. 1). In the upper part of aggnarate, the separation of the ap-continuous (liquid) and solid phases occurs. A solid liquid phase is brought out of the overflow threshold into chute 2. T:: □ the phase is deposited in the lower part (bonus part 3. For uniform distribution of the solid phase along the section inside the case, a mechanism 4 is installed, the rotation is carried out by a drive 5. The lower part of the body is made in the form of a cylinder 1.: The cylindrical part of the body is equipped with a gamma radiation unit 7 of a two-channel gamma relay to the axis.The gamma-ray flux, being studied by them, passes through the collimators 8 and pop.laat on counters of detective units 1 - top 9 sensors and lower 10 levels connected to the control system / system.

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the solid particles form in the sealing cones 11, and in the granular layer the cylindrical zone. If the level of the granular layer in the cylindrical zone reaches the sensor of the upper level 9, the control system generates a signal forcing the actuator 12 to open the valve 13. When the surface of the granular layer reaches the level of the lower sensor, the valve 13 is closed case of constant load on

the sump the degree of opening of the reinforcement also remains unchanged, i.e. its unloading is carried out continuously.

Signals from the top 9 sensors and

the lower 10 levels arrive at the input of the electronic unit 14 (FIG. 2) of the gamma relay.

The first channel of block 11 (upper level) works in a positive mode, i.e. a +1 signal is generated when the granular layer reaches the upper level sensor 9. The second channel (lower level) operates in the negative mode and produces

signal -1 in the absence of a granular layer at the level of the lower level sensor 10.

Thus, when the level of the granular layer is in position with the sensors of the upper 9 and lower 10 levels, there is no regulating signal. The signal from the gamma relay is fed to the input of the controller 15, which produces pulsed signals to the input of the contactless reversing actuator 16. The duration and frequency of the pulse following determine the speed of operation of the actuators 12.

The operation of a gamma relay is based on measuring the intensity of gamma radiation transmitted through a controlled medium. The amount of gamma rays absorbed by the controlled medium is proportional to its density. In order to stabilize the level of the granular layer, it is necessary that the density difference between the granular layer and the suspension containing the precipitated particles (above

layer), sufficient to trigger a gamma relay.

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Claims (1)

DEVICE FOR AUTOMATIC CONTROL OF A RESTAURANT, containing a regulator and actuators of locking and regulating bodies, characterized in that, in order to improve the quality of separation of the suspension, the lower part of the settler is made in the form of a cylinder with several sealing cones attached to its lower part, the device contains a gamma emitter with collimators installed inside the cylinder, sensors of the upper and lower levels of the granular layer in the cylinder and an electronic unit, while the outputs of the sensors of the upper and lower The levels are connected to the inputs of the electronic unit, the output of which is connected through the regulator and the reversing starter to the actuators of the locking and regulating bodies mounted on the sealing cones, and the collimators are installed in line with the sensors of the upper and lower levels. SU, „. 1181682