SU40046A1 - A device for sampling liquids from tanks - Google Patents

Description

Already known are samplers in the form of tubes provided at the lower end with valves, taps, valves, etc., and intended for sampling liquids from tanks in an amount proportional to the volume of the layer in which the sampler is located.

In the proposed sampler for sampling, at the lower end of the tube, an iris gate with a control pin is applied, the outer end of which is inserted into the curvilinear slot of a special grooved guide, movably connected to the instrument tube,

In the drawing, FIG. I depicts an instrument sectional view along the axis; FIG. 2 is a view of the device from the side of the iris shutter; FIG. 8-general view of the device; FIG. 4- view of the instrument tube; FIG. 5 - a general view of the device with the extended tube.

The device is arranged as follows. The water end of the cylindrical tube I, the length of which is slightly larger than the diameter of the tank, has an iris-shutter diaphragm 2. The other end of the tube is open. On one side of the tube I is attached a grooved guide 3, having a curved slot 4, the vertical projection of which is exactly

(415)

equal to the diameter of the tank. A pin 5 attached to the iris shutter 2 for the opening and closing of the diaphragm passes through this slot. The tube I moves freely in guide 3 toward its open end. Movement around its axis with respect to the groove of the tube I has not. When tube I extends out of guide 3, pin 5 rises in slot 4 along with the tube, while the slot curvature causes the lever to move around the tube axis, with the tube diaphragm gradually opening and, when the tube is pulled out half, the diaphragm is fully open. Upon further movement, the diaphragm begins to close gradually and, when the tube is fully extended, the diaphragm will again be closed.

The use of the instrument is as follows. Holding the device vertically above the surface of the liquid, the guide 3 is lowered to the bottom of the tank. After that, the tube I slowly lowers into the liquid. The diaphragm 2 begins to open, and liquid begins to flow into the tube under pressure.