RU1827596C - Turbidity meter - Google Patents

Abstract

Usage: measuring the transparency of wastewater and sewage. SUMMARY OF THE INVENTION: the device eliminates the direct contact of the optically transparent elements with a controlled liquid and prevents the destruction and contamination of their surfaces. This is achieved by introducing a hollow cylinder with an optically transparent baffle equipped with a movement mechanism, while the radiation detectors are mounted in the peripheral openings of the bottom of the glass and are closed by optically transparent windows on the side of the glass cavity, and holes are made in the side of the glass and the light-protective housing. 1 ill.

Description

The invention relates to measuring the turbidity of wastewater and sewage and can be used in chemical, metallurgical, engineering and other industries.

The purpose of the invention is to increase the reliability and duration of non-verifiable operation of the device.

The drawing shows the proposed mut number.

The turbidimeter includes a cup 1 and a sleeve 2 pressed into it. A hollow cylinder 3 and a light-shielding housing 5 fixed to it by a radiation source 4, a cylinder moving mechanism 3. comprising a nut 6, nut 7. The screw 6 is connected to the frame 8, which turn with a cylinder 3. A nut 6 is placed between the bracket 9 and the closed end of the light-shielding housing 5, on which the rod 10 is fixed. The open end of the light-shielding case 5 is blanked by a cover 11 with holes 12. Radiation receivers 13 are installed around the perimeter

the bottom of the cup 1 into the through channels, which are sealed on the inside of the cup 1 by optically transparent windows 14, The cylinder 3 has a transparent partition 15, which is also sealed. The side walls of the cup 1 and the light-shielding housing 5 are respectively made with slots 16 and holes 17.

The turbidimeter works as follows.

To measure the degree of pollution of wastewater or catalytic water, the turbidimeter is lowered by means of a rod 10 into a sump or drainage channel with a controlled liquid. The liquid through the openings 12 of the cover 11 fills the cup 1, and the air is squeezed out under the influence of the hydrostatic pressure of the liquid through the slots 16 of the cup 1 and the holes 17 of the light-shielding casing 5. As the turbidimeter is immersed, the level of the controlled liquid is established in the cup 1 along the upper face of the slots 16, in the hollow cylinder 3 at its end, since

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the static pressure of the remaining air balances the hydrostatic pressure of the fluid. The radiation source 5 is turned on. The light rays of the penetrator through the transparent partition 15 illuminate the foreign particles present in the liquid. The reflected rays, passing through the thickness of the controlled fluid, are absorbed, and the remaining part of them enters the photodetectors 13 through the windows 14, generating an electric potential proportional to the degree of contamination of the fluid. At a higher level of contamination of the controlled fluid, when the electric potential of the photodetectors 13 is close to zero, the thickness of the layer of the translucent fluid is changed. To do this, turn the nut 7 clockwise to raise the screw 6, and in place with it, using the frame 8, the hollow cylinder 3. Thus, each contaminated level of the controlled fluid is set its own translucent liquid layer, expanding the range of measurement of the fluid contamination. Due to the residual air pressure in the cup 1 and the hollow cylinder 3, the direct contact of the optically transparent elements with the controlled fluid is eliminated and therefore their destruction during the control process. Air leakage due to the inclination of the turbidimeter is possible at large angles (more than 45 °) of its deviation from the vertical axis. A float (on

not shown) and increase the weight of the cover 11 or suspend a special load to it.

Claims (1)

The claims Mutnomer, comprising a light-shielded housing with holes mounted on the rod, a radiation source located on the axis of the housing and optically coupled to the radiation receiver, characterized in that, in order to increase the reliability and duration of the unchecked operation of the turbidimeter, a cup is inserted into it with a central and peripheral hole in this part, installed upside down on the same axis as the radiation source, additional radiation receivers, a sleeve installed in the central hole of the glass on its axis, one of the ends of which is installed in the cavity of the glass, inside the sleeve coaxially with it there is a hollow cylinder with an optically transparent partition installed on the side of the cavity of the glass, equipped with a movement mechanism, while the radiation source is mounted on the hollow cylinder and separated from the cavity of the glass by an optically transparent partition, receivers the radiation is mounted in the peripheral holes of the bottom of the glass and closed on the side of the cavity of the glass with optically transparent windows, and in the side of the glass slots are made in ur end of the sleeve is installed in the cup cavity. / 2