SU374501A1 - SIPHONIC DISPENSER - Google Patents

Description

one

This invention relates to the dosing of liquids and can be used in the food, chemical, pharmaceutical, coal preparation and other industries.

Known siphon. dispensers containing a measuring container, a siphon tube and a liquid supply pipe with a shut-off device.

The aim of the invention is to obtain a dose of liquid of a predetermined volume.

This is achieved by the fact that the dispenser according to the invention is provided with a collector, and the measuring container is made of series-connected V-shaped pipes, terminated by a siphon tube, connected to the collector by jumpers. The latter are equipped with shut-off valves that block part of the working volume of the dispenser.

The drawing shows the proposed dispenser.

It contains a battery of V-shaped tubes and consists of vertical tubes U-2, 3-4, 7-8. 9-10, 11-12, 13-14, 15-16, connected by horizontal pipes 2-3, 4-5, 6-7, 8-9, 10-11, 12-13, 14-15, 16-17 , siphon pipe 17-18, collector pipe 19-20, taps 21-24 and inlet 25 with tap 26.

The dispenser works as follows. The taps 21-24 are closed and the tap 26 is open. With

From this line, the liquid enters the nozzle 25, the pipes / -17 are filled (see position I). With further water supply, the liquid flows into the siphon

pipe 17-18. Due to hydraulic resistances (local and long), the water level in the pipe / -2 rises above point 4 by the value of the DL.

As the siphon tube is filled 17-18

the water level in the pipe 1-2 decreases. This is due to two reasons: firstly, as soon as the differential D / g appears and the liquid begins to flow into the tube 17-18, discharge is created in the tube 16-17. The pressure at point 2 of the liquid column in the pipe / -2 is greater than the pressure at point 3 due to the discharge created by the liquid column in the pipe 17-18. As a result, the flow of liquid from the pipe 25 is directed into the pipe 3-4 and further

battery coil (from the area of greater pressure to the area of lower pressure). Secondly, when the flow from the pipe 25 into the pipe 3-4 flows, the liquid is captured (ejected) from the pipe 1-2 and transferred

3-4 pipe. The water levels in the pipes -2 and J7-18 are lowered (see position P).

In pipe 4-5, at this time, the discharge increases more and more. As soon as the water level in the pipe / -2 is on the same horizontal line with point 2, and the level in the pipe / 7-18 is below point 15, the air from the atmosphere will immediately rush through the pipe / -2 into pipe 4-5. At this moment the liquid column in the pipe 3--4 will consist of water and air bubbles and therefore will be lighter than the column 17-18.

The forces of the weight of the liquid columns 5-6, 7-8, 9-10, 11-12, 13-14 and 15-16 are mutually balanced, and the difference in the weight of the liquid columns 3-4 and 17-18 will cause the movement of all the liquid that is in system. This will cause a splash of water from the dispenser (position III). Then the cycle of filling and emptying the pipes / -18 is repeated.

For the dispenser to work properly, the pipe filling time must be longer than the emptying time. This is achieved by adjusting the degree of closure of the valve 26.

For adjusting the dose volume, a manifold tube 19-20 and taps 21-24 are used. The principle of the action of the dispenser in controlling the volume of the dose remains the same with the only difference that the air from the atmosphere passes through different pipes and breaks the continuity of flow in one or other places.

Subject invention

A siphon metering device containing a measuring tank, a siphon tube and a supply of a fluid pipe with a shut-off device, characterized in that in order to obtain a dose of a liquid of a given volume, it is equipped with a manifold, and the measuring tank is made of series-connected V-shaped pipes, siphon tube terminations connected to a collector by jumpers provided with stop valves blocking part of the displacement volume of the dispenser.