SU1520400A1 - Device for determining concentration of suspensions inclined to foam formation - Google Patents

Abstract

The invention relates to devices for determining the concentration of suspensions prone to foaming, for example cellulose suspensions and its derivatives, and can be used in all sectors of the national economy. The purpose of the invention is to improve the accuracy of determining the concentration of the suspension. To do this, in the upper branch pipe of the device are installed with a gap to the walls of its suspension supply pipeline, the lower end of which is located in the conical part of the bottom, and the upper one has a valve that communicates with the atmosphere, water supply and filling pipelines, the lower end of the water filling pipeline is provided with an annular perforated device, the lower nozzle of the device is equipped with an exhaust automatic valve, and the upper one with an overflow nozzle. When measuring, the device is poured up to half with water, the suspension is introduced below the water level, water is added and the measurement is performed, then the cycle is repeated. 2 Il.

Description

The invention relates to devices for determining the concentration of suspensions prone to foaming, such as cellulosic suspensions and its derivatives, and can be used in all folk industries to determine the concentration of suspensions under the conditions of possible foaming.

The aim of the invention is to improve the accuracy of determining the concentration-id1 suspension.

FIG. 1 shows a device for determining the concentration of a suspension}. 2 — node I in FIG. one.

The device contains a cylindrical body 1 with a conical lid 2 and bottom 3, inlet 4 and outlet 5 nozzles. The device is mounted on scales 6. The overflow pipe 7 is located on the inlet pipe 4, the suspension supply pipe 8 enters with a clearance through the inlet pipe 4 in the cylinder, the device’s lindric body 1,

in the upper part has a valve 9 dp communication with the atmosphere. In addition, in the inlet. 4 are placed with gaps to the pipelines 10 and 11

-watering and topping-up, connected

with a water pipeline

315

switch (not shown). At the end of the water inlet line 10, an annular perforated tip 12j is located, and the outlet nozzle 5 has a valve 13 for resetting the suspension.

The device works as follows.

An empty device is weighed on the scale 6, the water inlet pipe 10 is filled with a portion of the cylindrical body 1 to about half and then weighed again. Through the pipeline 8 is poured under the water level of the sample suspension, the concentration of which must be measured. Entering the suspension below the water level intensifies the evolving of air bubbles from the suspension. Then again, water is poured into the cylindrical body 1 through conduit 10 before rolling, avoiding overflow of the suspension and water through the overflow pipe 7, since the overflow of a part of the solid phase from the housing will reduce the measurement accuracy. moment, overflow water through the overflow pipe.

The diameter of the valley water pipeline should be at least 5 times smaller than the diameter of the water inlet pipeline. This prevents the mixing of the water added to the refill at the end of filling the device. and such formations to exclude the loss of the solid phase suspension

overflow pipe., cpu also provides improved measurement accuracy.

The device is then weighed, the temperature of the slurry is measured, and the value of the contraction is calculated. After the measurement from the dus- terry housing 1, the suspension is poured through the outlet 5 with the outlet valve 13. Through the pipeline 10 of the water inlet and annular perforations | the tip 12 is rinsed with water to the internal cavity of the device to remove the solids remaining on the walls of the particles. After that it is closed

The exhaust valve 13 is installed and the device is ready for the next measurement. All operations are carried out automatically.

The use of the proposed device will allow the maximum effect of air bubbles contained in the suspension, more prone to foaming, to determine the concentration of the suspension. The measurement error of the suspension concentration by a known device is ± 1.0%, and the proposed tO is 1 - 0.15%.

formula of invention

A device for determining the concentration of suspensions prone to foaming, containing a cylindrical housing mounted on a scale with an inlet and outlet nozzles and a slurry supply line positioned in front of the inlet nozzle, characterized in that through the inlet pipe into the cylindrical case, with the upper end of the suspension supply pipeline being additionally equipped with a valve: a): a sphere, an outlet the devices are additionally equipped with a tusk valve, a connecting pipe with a uter: from pza it is additionally equipped with a non-connecting pipe, in addition, a water pipeline is additionally introduced into the device, with the possibility of switching from a donor to a device with a connection to the device and topping up the water which are installed in the inlet pipe so that their lower edges are located above the cross pipe and the end of the water inlet pipeline is equipped with a kosh (perforated device 4), and and the water exceeds the diameter of the pipeline valley of water more than 8 times.

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Claims (1)

Claim A device for determining the concentration of suspensions, prone to foaming, containing a cylindrical body mounted on the balance with inlet and outlet nozzles and a suspension supply pipe located in front of the inlet pipe, characterized in that, in order to improve the accuracy of determining the concentration of suspensions, the suspension supply pipe is introduced through the inlet a pipe in a cylindrical body, and the upper end of the suspension supply pipe is additionally equipped with a valve for communication with the atmosphere, the outlet pipe is arranged The device is additionally equipped with an exhaust valve, the inlet pipe of the device is additionally equipped with an overflow pipe, in addition, a water pipe is additionally introduced into the device, connected with the possibility of switching with additional pipelines of the bay and topping up water, which are installed in the inlet pipe so that their lower edges located above the overflow pipe, and the lower end of the water inlet pipe is provided with an annular perforated device, and the diameter of the water inlet pipe is diameter greater than the operation pipeline topping water more than 8 times. Phag. 1 ι