SU440684A1 - Diamond counting device - Google Patents

Description

The invention relates to the field of instrumentation and is intended for use in diamond storerooms for quick and accurate recalculation of the quantity of diamonds in a lot.

Various devices for counting small items are known, but they cannot be used for counting diamonds due to their low reliability.

The purpose of the invention is to improve the reliability of the device.

This is achieved by the fact that in it the corner groove has a Y-shaped fork at the end.

FIG. 1 is a diagram of the proposed diamond counting device; in fig. 2 - location of the photo meter in the device.

Inside the cup 1 of a truncated cone type, equipped with blades 2 (clamps), the upper edge of the vibrating channel 3 is inserted, the lower edge of which passes into the / 4-shaped fork 4 and is located with a small gap above the belt of the accelerating conveyor 5 for crystals 6. The receiving drive 7 is located behind the conveyor belt The photoelectric counter contains, in addition to the usual sources 8 of light and the photodiode E, two additional mirrors 10 and 11, the vibrating channel 3 is provided with an angular groove 12.

The device works as follows.

Inside the glass fall asleep subject to the account of diamonds. When the cup is rotated, the blades carry the crystals upwards, where they are piled onto the upper part of the vibrating channel, from which they move along the corner groove one by one to the lower edge. Since the speed of movement of the conveyor belt is significantly greater than the speed of movement of the crystals along the vibrating path, thanks to the Y-shaped fork, the crystals, still on it, touch the ribbon and are carried away by it, so that the subsequent crystal cannot touch the ribbon until i.e. separation of crystals occurs. When a diamond crosses a photoelectric counter beam, one unit is summed up, after which the crystal falls into a receiving drive.

To enhance the useful signal and prevent errors in the count, you can skip the same beam multiple times with the help of mirrors (prisms).

As an example, a scheme of twice passing a beam through a crystal with the help of two additional mirrors 10 and 11, which reflect the illuminating beam from the lamp 8 to the photodiode 9, is given.

Subject invention

A device for counting diamonds containing a bunker, a separation unit made in the form of a vibrating chute with an angular groove, and a photoelectric counter, characterized in that, in order to increase the reliability of the device, the Vybrolotka angular groove in it has a Y-shaped fork.

FIG. 2 3 8