SU279581A1 - Method for automatic control of suspension separation process - Google Patents

Description

one

The invention relates to methods for automatically controlling the productivity of a solid material (by the solid phase) of drum and disk vacuum filters used for separating suspensions. in the chemical, ore dressing and other industries;

There is a known method for automatically controlling the process of separating a suspension by maintaining a constant level in the vacuum filter trough by affecting the flow rate of the supplied suspension. However, this method does not stabilize the performance of the vacuum filter on the solid product, since both the input parameters of the filter (the concentration of solids in suspension and its filterability) and the operating parameters (the filtering capacity of the fabric, the amount of vacuum) vary considerably. I In order to stabilize the performance of the vacuum filter, it is proposed to further adjust the flow rate of the solid product at the filter output by varying the rotational speed of the drum, and the flow rate

the solid product being cut off the drum is measured by a radiotozotome device sensitive to TvE1:) home product.

The drawing shows a diagram of the implementation of the proposed method.

The diagram contains a pulp gauge sensor 1 in a vacuum filter trough, a secondary device 2 gauges, regulated 3 levels, an actuator 4 with a regulating valve on the pipeline, a sensor 5 and 6 of a solid material flow meter, a secondary device 7 of this flow meter, a regulator 8 and a device 9 for controlling the speed of the drum.

The flipper flowmeter is a radioactive isotope-sensitive device based on solid material absorbed by the filter (material) from the source radiation that is cut off from the filter. The sensor of the flow meter is installed either at the point along which the material cut from the drum passes for further processing; (sensor 5) or on the drum (

The drum speed of the vacuum filter is discharged: 1 by conventional methods, for example, asynchronous motor with a throttle control, an electromagnetic clutch or a variator.

Information from the secondary equipment of the 2 pulp unit is fed to a level 3 controller, which controls; actuator 4 control valve on the slurry pipe. Information from the secondary device 7 of the flow meter of solid material is fed to the regulator 8, controlling the device 9 to regulate the number of rotation; Comrade

With a decrease in the level of pulp in the trough 15 of the vacuum filter compared to the specified regulator 3 urszhn increases the opening of the valve using

actuator valve 4. By-. the dacha of the pulp increases, and the urshen pulp t 20 in the trough rises to the nominal 3b. cheni. If the level of the pulp is higher than j of the nominal value, the regulator 3 iro will reduce the flow of the pulp.

With a decrease in the consumption of solid 25 product (paste) compared with a given value, the secondary

The device 7 of the paste flow meter, and the adjustment of the 8 through the device 9 increases the number of “: lo the drum until the ps, until the paste consumption reaches the nominal-; cheni. By increasing the consumption of pasta above |

I setpoint regulator reduces the number of obta}, mercury.

Subject invention

Claims (2)

1. The method of autotylae regulation of the process of separation of the suspension in a vacuum filter, for example in a drum filter, by maintaining a constant level of suspension in xfat, the vacuum filter affects the flow rate of the supplied suspension, characterized in that, in order to stabilize the performance of the vacuum filter, the flow rate of the solid product at the filter output is also varied by O1-1 rotation of the drum. 2. A method according to claim 1, characterized in that the consumption of the solid product being cut from the drum is measured with a radioisotope device sensitive to the solid product.