SU445607A1 - Device for inserting bulk materials into the pressure pipe of a pneumatic conveying installation - Google Patents

Description

one

The invention relates to a pneumatic transport. (Apparatus for introducing loose

materials in pressure pipelines of pneumatic conveying installations, containing a cylinder, linder with loading and unloading windows, the latter being placed one

from another at least two | working cavities between pistons a single metering body placed inside the cylinder and fitted at the ends with hollow plungers, as well as nozzles for supplying compressed air and discharging air: material mixture. AT . these devices the number of boot windows y. the cylinder is one unit larger than the number of discharge ports, and the hollow plungers of the metering body face the open cavity of the cylinder end caps.

A disadvantage of the known feeders is the relatively low productivity of their work and their inability to supply air-material mixture to several destinations.: In order to increase productivity

operation of the device by increasing the number (at the same time the working cavities unloading the piston VL1X) are made with the number of unloading windows per unit greater than the number of loading windows, and the hollow plungers of the metering body face the open part of the cavities towards the loading windows.

To ensure the supply of materials to several destinations under the loading openings of the cylinder, a pallet can be strengthened, divided by partitions into sections according to the number of discharge openings, each of which are connected to the compressed air supply and exhaust air mixture.

FIG. 1 shows the proposed device, a longitudinal section; in fig. 2, sections A-A and B-B in FIG. one.

Cylinder 1 has a receiving funnel 2 and P of loading windows 3, spaced from each other at a distance of two working cavities 4 between the pistons 5, and a movable metering body placed inside cylinder 1. At the ends of the metering body, hollow plungers 6 are installed, turned the open part of the cavities in the direction of the boot Windows 3, the Cylinder 1 is equipped with channels 7; supplying compressed air for purging the cylinders +1 by the discharge ports 8, communicating with the pallet 9 attached to the bottom of the cylinder; The pallet 9 is divided by partitions 1O on; fl + 1 section 11, to each of which are connected nozzles 12 of the compressed air supply and nozzles 13 of the outlet of the air-material mixture to the discharge pipe. waters (not shown). The sealing of the pistons 5 and plungers 6 is provided by seals 14. The cylinder 1 is closed from the ends by covers 15. Through covers 15 of the cavity of cylinder 1 are connected by pipelines 16 of compressed air with a two-way switch 17.

The device works as follows.

When compressed air is supplied through a two-way switch 17 through conduit 16 to the left cavity of cylinder 1, the metering body moves to the right, and the material loaded through the windows 3 in the cavity 4 between the pistons 5 is transferred in the plane of the channels 7 to the compressed air supply and discharge ports 8, in which the doses of material are mixed with air and supplied to section 11 of pallet 9. From section 11 of pallet, the material is additionally supplied through the nozzles 12 with compressed air is supplied through the nozzles 13 through the discharge piping . During the reverse course of the metering body, after similar manual or automatic switching i of the two-way switch 17, similar processes occur.

. Thus, the dosed feed of material in one go neskhozh. pipelines simultaneously from several sections at a certain switching frequency occurring | dit continuously.

f The subject invention

Claims (2)

1. A device for injecting bulk materials; alo into the discharge pipeline of a pneumatic conveying installation, comprising a cylinder c; loading and unloading windows, with the latter being placed one from the other at a distance of at least two working cavities between the pistons of the movable dosing unit (the body placed inside the cylinder and provided with hollow plungers at the ends, as well as pipes for supplying compressed air and exhausting air-material mixtures, in contrast to the fact that, in order to increase the performance of the device by increasing the number of simultaneously unloading interpiston working cavities, the cylinder is filled with the number of discharge windows one greater than the number of charging boxes, and the hollow pistons of the metering body facing the open portion of the cavity towards the loading windows. 2. The device according to claim 1, differing from the fact that, in order to ensure material supply to several destinations, a pallet is fixed under the discharge ports of the cylinder, divided by partitions into sections according to the number of discharge windows, each of which is adjacent nozzles for compressed air supply and exhaust air-material mixture.