SU443275A1 - A device for sampling fluid from a stream - Google Patents

Description

(54) DEVICE FOR THE SELECTION OF SAMPLES FROM A FLOW

one

The invention relates to devices for sampling fluid from a stream, for example, an average sample from a stream of industrial wastewater in gravity drainage wells, and is intended primarily for use in monitoring the content of toxic substances in industrial sewage discharges.

A device for taking an averaged sample of a liquid from a stream, comprising an averaging vessel and a collection sample, is known.

A disadvantage of the known device is that it can act only until the filling of the averaging vessel, after which it is necessary to manually take an average sample of liquid from the averaging vessel to the collection sample, and the averaging vessel to empty the next sample.

In the proposed device, the averaging vessel is equipped with an emptying device consisting of a siphon moving in a vertical plane and an intermediate tank, and a funnel with a capillary is installed above the sample container. This allows for greater efficiency.

The drawing shows a device for sampling fluid from a stream.

The device includes an averaging vessel.

I and sample collection 2. The averaging vessel has an emptying device consisting of a siphon 3, moving in a vertical plane, and an intermediate tank 4, and a funnel 5 with a capillary 6 is located above the sample collection.

The device works as follows. The controlled fluid flow rotates the water wheel 7, the movement from which through the shchiv 8, the driving belt 9, the pulley 10 and the shchiv

II is conveyed to the conveyor belt 12. A mat 13 secured to the belt captures a fluid sample as it passes through the stream.

and pours it into the receiving tray 14. From the tray, the sample enters the averaging vessel 1. When this vessel is filled to the level corresponding to the upper point of the convex part of the hose 15, the liquid from the vessel begins to slowly flow through the hose 15 and the tubes 16 and 17 into the intermediate tank 4 by increasing her weight. By the action of an increasing weight, capacity 4 is lowered, and with it the tube 17 and the upper part of the hose are lowered, which

increases the rate of flow of fluid from the vessel 1.

In a short time, tank 4 is filled with liquid, and the rate of outflow of fluid from vessel 1 reaches a maximum value. The liquid flows through the siphon 3 and the tube 18 until the vessel is almost completely empty. From the siphon, the liquid is discharged into the sewage flow, and through tube 18 to the funnel 5, from where most of the liquid flows through the funnel valve into the stream, and a smaller part through the capillary 6 to sample collection 2, represents the average sample of the total volume of liquid .

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-7 Object of the Invention A device for sampling a liquid from a stream, including an averaging vessel and a collection of samples, distinguished by the fact that, in order to increase the efficiency of operation, the averaging vessel is equipped with an emptying device consisting of a siphon moving in a vertical plane, and intermediate tank, and above the collection of samples installed funnel with a capillary rum.