SU27212A1 - Automatic scales for loose bodies - Google Patents

Description

In the proposed automatic scales for loose bodies, the portion of the bulk to be weighed is preliminarily measured in a bucket, equipped with two rotating flaps, interconnected, with each other, and a movable wall, with the help of which its capacity is varied. The filling of the bulk portions to the required weight is done through a sleeve with a valve, which is controlled by an electromagnet. For the production of weighing without taking into account the weight of the loose powder bag, a bucket with an outflow gate connected with a lever and a thread with an additional cistern is placed on the weighing pan; the lever holds the flap until equilibrium is attained, resting its end on the pawl that is at this moment retracted to the side by the blades of the rotating bar.

In FIG. 1 schematically shows a side view of an automatic balance for loose bodies; FIG. 2-scales with a device for the production of weighing without taking into account the weight of the bag; FIG. 3-modification of the movable wall of the bucket; FIG. 4 shows a modification of the Weighing tool without taking into account the weight of the bag.

The bucket 1 (Fig. 1), which serves for the preliminary measurement of the part of the weighed center beam, is equipped with two rotating flaps 2 and 3, connected by a system of levers b.

To change the capacity of the bucket, a movable wall 10-a is installed in it, fixed in the sockets 10. With the damper 2 closed, the bulk wall is fed into the bucket 1 through the open damper 3; upon filling it, by tensioning the thread 7 by hand, thrown over the blocks 5, the flap 2 opens, and the flap 3 closed with the levers 6 closes and the measured amount of friable falls into a bag on the scales. For filling the bulk bucket with a bucket, it is equipped with a discharge sleeve 21 with a flap 29 at the lower end. The opening of the flap 29 is carried out by means of the thread 19 associated with the nute 7 and attached to the counterweight-20 at the end of the flap 29. At the same time, the support platform 27 is lifted with the help of the thread 30, which serves to eliminate the sharp heights of the scales. By removing the thread tension under the influence of the weight of the arms b and the pressure of the bulk on the flap 3, the latter opens again, and the flap 2 closes and at the same time the support pad 27 falls.

When the balance reaches equilibrium, the plate 25, mounted on supporting racks 24, mounted on a weight plate, presses contact 26 and closes the circuit 23 of the electromagnet 22, the measles of which is provided with a drummer 31. The last strike turns out to be an Effective weight 20 and the Shutter 29 closes, after the bag with the loose bulk is removed, the thread 7 is again tensed and the process is repeated.

To enable weighing without taking into account the weight of the bag for the bulk powder, a bucket 1 is placed on the weighing pan (Fig. 2) equipped with a hinged outlet valve b connected by means of lever 7 and thread 11c with an additional tank 4. Lever 7, when the valve 6 is closed, resting on the pawl 8, which, when the balance reaches equilibrium, from the loose from the upper bucket 1 poured into the bucket 1, falls 3 sphere of rotation of the pulley with blades (not shown in the drawing), which deflects it to the side; The lever 7 falls and opens the flap 6, while at the same time turning the additional tank 4, which serves to prevent the loose bulk from the upper bucket 1 when the flap b is open. Bulk from bucket 1 falls through a funnel 15 into a bag, which is located at site 17 connected with thread 7. Under the influence of the weight of bulk powder in the bag, platform 17 is lowered and thread 7, through levers b, opens the flap 2 and closes the flap 3, and support pad 27 closes the damper b. After removing the bag, the pad 27 under the influence of its own weight falls, the flap 2 closes again, and the flap 3 opens and the weighing is repeated.

In a modification of the scale shown in FIG. 3, instead of being fixed in the sockets 10, the movable wall 10a of the bucket 1 (FIG. 2) is provided externally with a crutch b, which is engaged with the gear 7, the rotation of which moves the said wall in one direction or the other, changing the capacity of the bucket accordingly.

FIG. 4 depicts a modification of the balance, where instead of the additional tank 4 above the bucket 1 (Fig. 2) mounted on the weights lash, the inlet pipe 33 is fitted with a flap 36 connected by means of the lever 37 and 38 to the lever 39 of the exhaust flap 40. Up when the balance is in balance, the shutter 40 is held in the closed position by the dog 41, which is controlled by an electromagnet. When equilibrium occurs, the dog 41 is pulled off by an electromagnet, with the possession of which the valve 36 is closed; preventing the entry of loose from the top bucket, and the flap 40 is opened, and the contents of the bucket 1 are poured into the bag.

The subject of the invention.

Claims (5)

1. Automatic scales for loose bodies, characterized by the use of a pre-measuring part of a weighing bulk bucket, equipped with two mutually connected using levers b valves 3 and 2 and fixed in slots 10 with a movable wall HU used to change the capacity of the bucket 1, In this case, the DLY of the weighing of the bulk portion with the required weight to the weight of the bucket 1 is provided with a sleeve 21 with a flap 29 controlled by an electromagnet 22 (Fig. 1). 2. In the weights according to claim 1, the use of a device for the production of weighing without taking into account the weight of the bag for the loose material, characterized in that the bucket 1 placed on one of the scales cups is equipped with an exhaust valve b, with a lever .7 connected with an additional tank 4, and intended to keep the said flap in a closed state until the balance is balanced due to the support of the end of the said lever 7 about the pawl 8, for which the rotating pulley with blades is applied to the side (Fig. 2). 3. In scales according to the item 1 and 2, the use of a damper control device, characterized in that said valve is provided with a counterweight 20 connected with threads to the lever of the valve 2 of the bucket 1, and a pad 27 is placed under the weighing pan, while the electromagnet 22 is equipped with a hammer 31 for closing the valve 29 (Fig. 2). 4. Scale change according to claims 1-3, characterized in that, instead of the movable wall mounted on the nests 10 of the 10th bucket 1, such is provided with a rack 6 connected to the gear 7 intended for the corresponding movement of the said wall. 5. Modification of weights according to claims 1-4, characterized in that instead of an additional tank 4, an intake pipe 33 is placed above the bucket G with a valve 36 connected by means of a pull 38 to an lever 39 of the exhaust valve 40, moreover, to keep this valve in the closed position until the balance reaches Doggie 41 is applied, controlled by an electromagnet .. h FigZ /