SU763187A1 - Apparatus for packing granular products - Google Patents

Description

one

This invention relates to packaging and packaging equipment for bulk products.

A device for packaging food products is known, which contains a hopper with a metering chamber in which a rod is placed with a gate formed by drive plates mounted in a fan-shaped manner. A disadvantage of the known device is the lack of accuracy in metering due to the fact that the turns of the product feed screw are not completely filled. In addition, the device uses a complex mechanism to control the rotational movement of the screw, which reduces the reliability of the device.

The aim of the invention is to increase productivity, metering accuracy and operational reliability.

To achieve this goal, the device is equipped with a pneumatic cylinder and has a hollow brush in which a tubular casing is placed, in the latter a rod with a flap is located, and a hollow core is mounted on the rod, in the cavity of which a membrane fixed to the casing is connected to the pneumatic system , the drive includes a pneumatic chamber, having the form of a half disk and a blade located on it on the shaft, the shaft being pivotally connected to the stem, with ribs fixed above the plates and rigidly connected to the skin on the stem khom.

FIG. 1 shows a general functional diagram of the device; in fig. 2 - pneumatic chamber, vertical section (2a), horizontal section (26); in fig. 3 shows the connection of the shaft with the rod; on

10 of FIG. 4 - pneumatic cylinder size.

The device comprises a hopper 1 with a metering chamber 2, in which are placed fan-shaped plates 4 mounted on the rod 3, which form a valve. Above the bunker 1 is placed a pneumatic cylinder 5 with a hollow

 a brush 6, in which the tubular casing 7 is placed, and in its turn a rod with a valve is located. A hollow porsch 8 is fixed on the brush 6. A membrane 9 is mounted in the shield. It is fixed on the casing 7. On the rod 3 in the lower part above the plates 4, the ribs 10 are fixed, rigidly connected to the casing 7.

Claims (3)

The rod 3 with the plates 4 is controlled by a pneumatic cylinder 5 and a pneumatic chamber II. The pneumatic chamber (Fig. 2) has the shape of a half disk and contains two covers 12 and 13 and walls 14. In the pneumatic chamber, a shaft 15 is mounted on which the blade 16 is fixed with a seal 17. The wall 14 has the shape of a half ring and is closed by walls 18, 19 rigidly connected with a half ring 20 containing a seal 21. The walls are provided with tips 22, 23 for supplying compressed air. The shaft 15 is pivotally connected to the shaft 3 by means of a spring 24 and levers 25 (Fig. 3) to prevent the transmission of vibrations to the pneumatic chamber 11. For a more reliable filling of the chamber 2 between the hopper 1 and the chamber 2, there is a vibrator 26 generating circular oscillations. The device comprises a product level sensor 27, a feed screw 28 and a stirrer 29. A pneumatic cylinder 5 is connected to the inlets 30 and 31 of the pneumatic system 32. The device is equipped with a converter 33 for pulsating the gas flow in the pneumatic system 34. The rod 6 is bonded to a plate 35, which interacts with 36 simultaneously serves to limit the stroke of the piston 8 against the stops 37. The stops 37 are hydraulic cylinders with a damper device 38 and, using screw pairs 39 of the shaft 40 and sprockets 41, have the ability to change their position, The consequence of which is regulated by the mass of the dose. The device works as follows. The level sensor 27 and the feed screw 28 in the hopper 1 maintain a constant level of product. To fill the metering chamber 2, the plates 1 are closed by rotating the blade 16, which rotates the shaft 15 connected to the shaft 3 (Fig. 3). Then the piston 8 of the pneumatic cylinder 5 lifts the plates together with the fins 10 upward, simultaneously through the upper cavity of the rod 6 the pulsating air flow from the pneumatic system 34 enters, vibrates the membrane 9, as well as the ribs 10 and the closed plates 4. To avoid the back pressure on the membrane at the bottom parts of the stem have holes 42 through which the cavity of the piston 8 below the membrane is connected to the atmosphere. The oscillations of the plates 4 and the fins 10 prevent arching and improve the filling of the dosing chamber 2 with product. When the plates 4 reach a certain height in the dosing chamber 2, which is determined by the limiters 37 limiting the stroke of the piston 8, the flow of pulsating air flow into the cavity of the rod 6 is stopped. By means of a pneumatic chamber 11, the plate 4 is opened, forming a flap, and a certain mass of product is separated, which is pushed out by the pneumatic cylinder 5 from the chamber 2 into the container. At the same time, the product enters the dosing chamber from the hopper 1, behind the flap, where it is sealed during the next cycle of movement of the plates 4 upwards. Claim 1. Device for filling bulk products, containing a hopper with a metering chamber in which a rod with a valve formed by drive plates mounted fan-shaped is placed, characterized in that, in order to improve performance, metering accuracy and reliability in operation, the device is equipped with a pneumatic cylinder having a hollow rod in which a tubular casing is placed, a rod with a flap is located in the latter, and a hollow plate is mounted on the rod, in the cavity of which a fixed On the casing is a membrane, with the stem cavity communicated with the pneumatic system. 2. A device according to claim 1, characterized in that, in order to increase the speed of opening of the flap plates, the drive includes a pneumatic chamber having the shape of a half disk and a blade located on the shaft, the shaft being hinged to the rod. 3. A device according to claim 1, characterized in that the ribs are mounted on the rod, mounted above the plates and rigidly connected to the casing. Sources of information taken into account during the examination 1. USSR Author's Certificate No. 472070, cl. B 65 B 1/10, 1973. 39 one H-o 38 37 77 / 2b nineteen 75 G2 1G / J Zf 20