SU1516890A2 - Device for determining degree of dispersion of dust particles - Google Patents

Abstract

This invention relates to devices for analyzing the dispersion composition of powdered materials and dust and is an improvement of a. with. N 1229650. The aim of the invention is to improve the accuracy and reliability of the dispersion determination. For this, the device for determining the dispersion contains a housing within which a disk is mounted on the shaft. The working surface of the disk is made with a taper of 87-89 °. A cover with a similar taper is installed above the disk, with a central hole at the top of the cone and with the possibility of adjusting the gap between the cover and the disk. All receivers are installed at the end of the machine, with the possibility of smooth movement along the body. 1 il.

Description

The invention relates to devices for analyzing the dispersed composition of powdered materials and dust, can be used in the building materials industry, as well as in the metalworking and coal industries and is an improvement of the known device according to the author. St. No. 1229650.

The aim of the invention is to increase the accuracy and reliability of the determination of the dispersion of dust particles.

The drawing shows an instrument for determining the dispersion of dust particles, a general view.

The device for determining the dispersity of the particles of a flume consists of a body I, inside which a disk 3 is mounted on a vertical drive shaft 2 and has a cone 4 in the center. The working surface of the disk 3 is tapered with a taper 87-89. Concentric disk 3 installed receivers 5 in the form of annular cells. Receivers 5 are made removable and can be assembled from cells of different widths.

A feed funnel 6 with a flap 7 is installed above the cone 4. The shaft 2 is connected to a direct current electric motor 8, the revolutions of which can be varied by means of a rheostat 9 mounted on the housing 1, the latter is closed above by a cover 10. Between the cover 10 and the disk 3 above its working surface is placed connected with the disk 3, the cover 11, is made with a taper equal to the taper of the working surface of the disk 3, at the top of the cone of the hatch 11 there is a central hole. Kryppka II installed, with hauled

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the ability to adjust the gap between it and the working surface of the disk 3. The glass 12, on which the receivers 5 are mounted, is connected to the housing 1 with the possibility of smooth movement.

A device for determining the dispersion of dust particles works in the following way.

The funnel 6 is filled with a certain amount of dust or powdery material, the handle of the rheostat 9 is set to a position corresponding to a certain number of revolutions of the electric motor 8, and the electric motor 8 is turned on.

The flap 7 is opened, dust through a hole in the lid 11 enters the cone 4 in the center of the disk 3, which is evenly distributed, and under the action of centrifugal forces the dust particles move to the periphery of the disk in a radial direction at different speeds, depending on their mass. The movement of dust takes place in the gap between the cover 11, rotates ji-c together with the working surface 3, and disk 3. The separation of all the particles occurs from the periphery of disk 3. As the disk 3 rotates, the particles rg are distributed by size in the cells of receivers 5 that the largest ones are located in receivers 5 remote from the center of the disk 3 and the fine particles are distributed in 3 cells located closer to the rotating disk. In this case, the cup 12 has the ability to move along the axis of the cordus 1. Thus, the receivers 5 mounted on the cup 12 have the ability to smoothly change the level of their position relative to the level of the disk 3. With different

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the specific gravity and size of the dust particles change the size of the gap between the cover I1 and the working surface of the disk 3, the level of location of the receivers 5 relative to the level of the disk 3, as well as the revolutions of the DC motor 8 and a different set of ring-shaped receivers are used.

Thus, all dust particles are detached from the same geometrical place on the working surface of the disk (near its edge), and therefore possible errors in the distribution of dust particles among the receivers resulting from the separation of particles at different points of the disk surface are excluded. , those. increases the accuracy of measurement of dispersion, ensures the reliability of these measurements.

Claims (1)

Invention Formula A device for determining the dispersion of dust particles according to the author. No. 1229650, characterized in that, in order to improve the accuracy and reliability of the determination of dispersion, it additionally introduces a knob attached to the disk, which is made with a taper equal to the taper of the working surface of the disk, with a central hole at the top of the cone and placed above the disk with the possibility adjusting the gap between it and the working surface of the disk, at the same time, all the receivers are mounted on the end of the glass with the possibility of smoothly changing the level of the position of the end of the glass relative to the level of the disk along the core axis baleen. 12 Compiled by M. Rogachev Editor N. Bobkova Tehred A. Kravchuk Proofreader L. Beskid Order 6382/44 Circulation 789 VNIIPI State Committee for Inventions and Discoveries at the State Committee on Science and Technology of the USSR 113035, Moscow, Zh-35, Raushsk nab., D / 5 Production and Publishing Combine Patent, Uzhgorod, st. Gagarin, 101 Subscription