SU1397736A2 - Arrangement for regulating consumption of suspension - Google Patents

Abstract

The invention relates to the automatic dosing of slurries, suspensions and liquid aggressive contaminated mixtures that are prone to gypsum formation and scale formation. It can be used in chemical industry and in the production of mineral fertilizers for automatic flow control. The purpose of the invention is to expand the functionality of the device by metering the suspension. sium prone to gypsum formation and buildup. The goal is achieved by the fact that the device is equipped with a cutter-cleaner 19 mounted on the upper end of the knife-divider 7, and the height of the cutter-cleaner 19 is 0.3-0.5 diameters of the inlet 2, and the stroke limiter of the actuator 18. The use of the cutter-cleaner ensures the dosing of the plastered acid without cleaning the device and stopping the technology due to the automatic cleaning when moving the knife-divider. 1 il.

Description

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The invention relates to the automatic dosing of slurries, suspensions and liquid aggressive contaminated mixtures that are prone to gypsum and bale formation, can be used in chemical industry and in the production of mineral fertilizers for automatic control of contaminated acid alkalis of suspensions and slurries and is an improvement of the device on auth. Ev, No. 1164553.

The purpose of the invention is to expand the functional capabilities of the device by dosing suspensions that are prone to both gypsum and scale formation.

The drawing shows a device for controlling the flow of suspensions

The device comprises a housing 1 with an inlet pipe 2, provided with an internal partition 3 dividing it into a bunker 4 for receiving a slurry suspension and a bunker 5 for receiving an excess suspension, a slurry pre-regulating body, which is in the form of a slit nozzle 6, installed in the inlet nozzle 2, and the organ of fine regulation of the supply of the suspension in the form of a knife of the divider 7, located in it. In the bunker 4 for receiving the dosed suspension, an inclined breaker plate 8 is installed. For the first chute 9, the hopper 4 for receiving the suspended suspension is connected with the outlet nozzle 10, B after the load meter plate 11 is located, which is suspended through the bellows 12 on the torqueless 13 connected by means of the lever 14 and the rod 15 to the electric power converter 16. The latter, in turn, is connected to a regulating device 17, which controls the actuator 18, equipped with limit switches.

At the upper end of the knife-divider 7, there is a cutter-cleaner 19, the height of which is 0 ,, 3-0.5 diameters of the inlet nozzle 2, and the working stroke 30-50.

When choosing the height of the cutter cleaner less than 0.3 of the diameter of the inlet nozzle, the crevice nozzle does not completely clean, which leads to a decrease in the calculated performance of the device if the cutting height is increased

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ka cleaner more than 0.5 of the diameter of the inlet., an increase in the resistance of the dosed medium to the knife divider is observed, and, consequently, an additional loss of electricity, so the best choice for choosing the height H of the cut; and the cleaner is a range of 0.3-0.5 . The jf angle of the cleaning torch stroke is selected 30-50 and set using the stroke limiter located in the actuator "

If the angle of the working stroke is more

during cleaning of the cutter-cleaner 19 with the ends of the slit nozzle 6 and the cutter may break, if the angle of the working stroke Jf is less than 30 °, incomplete cleaning of the slit nozzle is observed which leads to a decrease in the first rated productivity „

The device works as follows.

The suspension under pressure is fed into the inlet nozzle 2. "Through the slit nozzle 6, the supplied suspension enters the knife divider 7, the slot size of the nozzle is selected depending on the required flow rate of the suspension, thereby pre-regulating its supply. The knife-divider 7 of the suspension is divided into two streams, one of which enters the hopper 5 to receive the excess suspension, and the second enters the hopper 4 to receive the dosed suspension. From the latter, the slurry enters the force-measuring plate 11 through the inclined breaker plate 8 and the inclined chute 9, along which it flows into the outlet nozzle 10, the flow of the suspension puts pressure on the measuring plate 115 to proportionally its mass. The force developed by the falling flux on the load plate 11, through the bellows 12 and the suspension 13, the lever 14 and the load 15 is transmitted to a standard electric power converter 16, which converts the vibrations of the load plate 11 into an AC signal, which is passed through the feedback system of the electric power converter 16 ., returns the load plate 11 to its original position. Each value of the flow of the suspension passing through the device corresponds to a certain value of the output current of the electric power

converter 16, which is connected to the regulating device 17. The latter amplifies the current signal and controls the actuator 18, which in turn moves the knife-divider 7 by an angle chosen from the conditions of the optimal cleaning length of the slit nozzle and installed by means of movable limit switches. Thereby, at a given ypoBfje, the slurry flow rate is maintained with the use of a cutter-cleaner 19 installed at the upper end

knife divider 7, allows you to dispense 15 lots without cleaning the device and the stopping, prone to zakipsovaniyu and scaling, because when adjusting the suspension, the knife divider 7 moves the cutter-cleaner 19 along the slit, clearing it of plaster and scale

The drawing shows the position of the knife-divider 7, when the incoming slurry is divided into two equal flows, one of which goes to the hopper 4 to receive the dosed suspension, and the second to the bunker 5 to receive the excess slurry. enters the hopper 5 for receiving 30 about the cutter-cleaner installed

at the upper end of the knife-divider, and the height of the cutter-cleaner is 0.3-0.5 diameters of the inlet pipe of the excess suspension and then to the return line, and when the knife divider 7 is completely moved, the suspension goes to the opposite side in the bunker 4 for reception odoziroka, and the stroke limiter actuator.

bath slurry and further measurement.

When this device operates on acid with a precipitate of gypsum, a clogging of the device slot is observed, which must be cleaned 2-3 times per shift, stopping the process.

The use of the proposed device due to the use of a cutter-cleaner, whose height is 0.3-0.5 of the diameter of the inlet nozzle, and the angle of its working stroke is 30-50, will ensure the dosing of the plastered kis

va technology due to automatic cleaning when moving the knife-divider. The accuracy of the adjustment does not change.

Claims (1)

Invention Formula A device for controlling the flow of suspensions according to ed. St. 1164553, 25 characterized in that, in order to extend the functionality of the device by dosing suspensions that are prone to be hybrized and scale-forming, it is supplied and the actuator travel limiter.