SU22943A1 - Automatic scales for weighing bags with bulk material - Google Patents

Description

The proposed automatic scales, built on the principle of lever-weighted scales, are designed to fill bags with bulk material in a certain amount of weight; under the influence of a certain weight of material filled into the bag, the hole of the funnel of the hopper is closed and the further emptying of the material into the bag is stopped.

In the attached drawing of FIG. 1 shows a view of an automatic scale at the back; FIG. 2 is a top view of a scale without a bin; and FIG. 3-view of one of the frames in perspective.

On frame A, two paired sectors C, located on both sides of the funnel K of the bunker, are fixed on the axes O; each pair of sectors is equipped with a lever D with a counterweight G and a gear W, coupled with the gear M, whereby both the teeth M are interlocked so that each rotation of one lever causes rotation; understanding of the other. At the periphery of each pair of I sectors there are two transverse plates 3 with some space between them; hooks or clips for hanging the bags are located on the ends of the sectors facing one another. On one of the axes O is placed the gear E, connected with the help of chain H to the gear Z, on the axis with which the dog sits, coupled with the ratchet wheel; the axis of the ratchet wheel is equipped with an arrow moving along the dial and indicating at one end the number of weighed bags and the other end weight of the bags.

At the ends of the sectors, the hooks hang an empty bag and lift one of the counterweights G slightly so that the end plates 3 do not close the holes of the bin, then the bulk material begins to fall into the bag from the bunker and due to the increasing weight of the bag levers D and counterweights G gradually rise. When the weight of the bag with the bulk flow reaches the designated value, the levers will take the position shown in the drawing by a dotted line, while the plates 3 will close the hole in the hopper funnel and the material will be poured out into the bag. In this position, the balance is fixed by inserting a gear W between the teeth, a rod controlled by a handle located on the front side of the balance, then the bag with the load is removed and the empty bag is suspended, after which the gear of the rod III is inserted between the teeth . Under the action of counterweights G, the ends of sectors C adjacent to the bunker are raised and open the hole of the funnel of the bunker, from which again the material begins to fall into the bag, etc.

With each lift, the lever / f, through E and Z, turns the ratchet wheel one notch, at which the arrow connected to this wheel moves the dial by one division, showing the total number of bags filled and their total weight. The weight to which the bags are filled with volatile material is regulated by the movement of the counterweights G on the levers D.

The subject matter of the invention.

Automatic scales for weighing bags of bulk material, characterized in that, to close the outlet of the funnel of the bunker, two pairs of W and L / sector C, located on the sides of the lower aperture of the latter, are used, each pair is equipped with a lever D with a counterweight L and located on the periphery of the sectors with a gap between them two transverse plates 3, designed to alternately open and close the hole of the funnel under the action of the weight of the granular Oh, covered in bag suspended for sectors.