SU80893A1 - Device for automatic determination of the degree of flowability of powders - Google Patents

Description

The subject of the invention is a device for automatically determining the degree of flowability of various types of powders, which is essential in judging the suitability of a powder for passing through various kinds of hoppers, dosing units, augers, feeders, etc. The main feature of the Instrument is the use of a periodically open bunker for powder and equipment under the bunker of a suspension of an I1 device, which closes when a certain amount of powder is received, the contacts of the electromagnet circuit register elektroizmeritepnogo of the device, supplied with current, proportional to the time of filling of the weighing tool.

To automatically control the periodic opening of the instrument's hopper, a disk is used, eccentrically mounted on an axis driven in rotation and periodically interacting with a spring-loaded displacement (buvker wall).

For Pitaea, a measuring electric meter with a current proportional to the time of filling the weighing device with a certain weight amount of powder, a disk mounted on an axis with a shaped slot, on one side of which a light source is mounted, and on the other side a photocell, for example, selenium, included in the circuit of a measuring electric meter .

The instrument weighing device is made in the form of a rotary BOKipyr axis of a shelf, carrying a spring-mounted eye, which serves to receive a powder and controls the closure of the contacts of an electromagnet circuit of a recording electrical measuring device.

No.80893-2. For the purpose of automatic control of the shelves, a disk mounted on an axis with a cut out square interacting with the shelf was used to drop the powder and lift it back to its original position in the device.

In the workshop, there may be a sampler installed at the powder transporting traysport and 1Service for periodically filling the hopper with powder.

The drawing shows the npHi6oipa electrical circuit for determining the degree of cusping of the powders.

The device has a vertical axis 1 mounted on bearings 2. Rims 5 are fixed on the axis / rigidly eccentricio and are fitted with a shaped hole for the passage of light from the bulb 5 to the photocell. Diac 6, mounted on the same axis, serves as an electric current switch for continuous operation of the device. A cylindrical sprocket 7 on the axis is connected to the gear 8 of the electric motor 9. The disk 10 with the cut square is used to lower and raise the shelf AND turning 90 ° around the axis 12. On the shelf through the insulator 13 a rolling pin 14 is attached, serving for closing a contact 15 with a certain amount of powder spilled from the hopper. A certain amount of powder at 14 is provided by a spring 16, which, under greater load, compresses and closes contact 15.

The powder is mixed along the conveyor belt 17. The operation of the sampler 18 is controlled by an electrically driven magnet, that is, 19, which is connected to the contact 20, which opens when the powder is filled with the hopper.

To protect the powder from untimely contact of contact 20, an inclined plane 21 serves, in which the powder, evenly descending, fills the hopper.

In order to prevent sticking and sticking of the powder on the inclined plane 21 under it, there is an electromagnet 22, which, when the powder is dropped from the tape, vibrates the plane with a frequency of 50 per sec.

The bunker is arranged with one movable wall 23, which, during operation of the drive, is gradually pulled to the left by the spring 24.

Electromagnets 25 and 26 for the co-vibration of the walls of the hopper, in order to clean them from adhering powder.

Inclined planes 27 and 28 prevent untimely closure of contact 15 when the powder collapses from the bunker.

Electromagnets 29 and 30 are mounted on planes 27 and 28 to prevent the plug from jamming, which cause the planes to vibrate during operation.

An electromagnet 31 serves to completely clean the rolling pin 14 from the powder adhering to it.

The entire electrical part of the device is powered by the alternating current received from the transformer 32.

The device is started by the switch 33.

The result is recorded on tape 34.

The pen of the recorder is driven by the current coming from the selenium photocell 35.

After switching on the current by the switch 33, the electromagnet 19 acts on 1 sampler 18, which partially removes the powder from the conveyor to the inclined bed 21 and then into the bunker. Upon filling the hopper, contact 20 opens and sampler 18 stops feeding. At this time, the hopper is in the closed position.

Beater electrode 9 chase gear 7 and 8 rotates the axis 1 with a certain speed. When turning the shaft, the eccentric disk 3

when the wall of the bunker is pushed to the left under the influence of PNH 24, it is in this position. This opens a hole in the bunker. In the form of a slit, through which the powder flows into plane 27, 28 and then onto the rolling pin 14. The amount of powder on the rolling pin 14, exceeding a certain weight, acts on the contact / 5, which closes the electromagnet circuit in the device corresponding to the opening of the bunker. This will express the graph as a dot.

The disk 10 from the axis of rotation comes in such a position when the shelf 11, and with it the rolling pin 14, with a sharp movement under the influence of the force of gravity moves to the vertical position, and the splash from the rolling pin M occurs.

No. 80893

Subject invention

Claims (6)

1. Instrument for automatic detection of powder flowability, characterized by the use of a periodically open hopper for trays and a weighing device installed under the hopper, receiving powdered powder from the hopper and closing when receiving a certain weight amount of powder electromagnet contacts registering an electrical measuring instrument readable by current, proportional the filling time of the weighing device with a certain weight amount of powder. 2. The device pop. 1, characterized in that for the automatic control of the periodic opening of the powder hopper, an eccentrically mounted disk is mounted on the rotational axis AND, periodically interacting with the spring-loaded movable wall of the hopper. 3. Device on Mon. 1-2, characterized in that a current proportional to the filling / weighing device with a certain weight amount of powder is used to supply the recording electrical measuring instrument with a current, fitted on an axis with a shaped slot, on one side of which a light source is installed, and on the other side a photocell, for example, selenium, included in the circuit of the device. 4. Device on PP. 1-3, characterized in that. that the weighing device is made at a rotating stand around the axis of the shelf, carrying a spring-loaded rolling pin, which serves to receive powder and controls the closure of the contacts of the electromagnet circuit of the recording electrical measuring instrument. 5. Device on PP. 1-2, characterized in that, for the purpose of automatically controlling the lowering of the shelf, to drop the powder and raise it to its original position, an axially mounted disk with a cut out square interacting with the shelf is used. 6. In the device on PP. 1-5 use of a sampler installed at the powder transporting conveyor and used to periodically fill the hopper with a powder.