SU1299913A1 - Feeder for pneumatic supply of loose materials - Google Patents

Abstract

The invention relates to the transportation of bulk material in a gas stream. The purpose of the invention is to increase reliability. Feeder for pneumatic feeding of bulk materials from 20 to 10

Description

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contains a mixing chamber 1 and a loading container 4, communicated by a screw 7 enclosed in a cylindrical guide 3. An outlet branch 8 passes through the screw 7. At the end of the screw 7, a loosening element 25 with brushes 26 and vanes 27 is mounted in the mixing chamber 1 The pipe 8 is provided with a casing 10 with holes and reflections. The body element 11, made in the form of an umbrella. The auger 7 in the area of the loading tank is equipped with additional loosening elements 22. The outlet nozzle 8 and the cylindrical guide 3 are equipped with cooling shirts with nozzles for supplying and discharging the cooling fluid. At the bottom of the mixing chamber 1, an aerating partition 5 is installed, through which the purge pipe 6 connected to the vibrator is coaxial with the outlet nozzle 8, and the aspiration nozzle 18 is located at the top. The device works as follows. The material is fed into the loading container 4, where it is scooped up by additional crushing elements 22 into a cylindrical container.

This invention relates to the transport of bulk material in a gas stream.

The aim of the invention is to increase reliability.

The drawing shows a feeder for pneumatic conveying, longitudinal section.

A pneumatic feeder for press materials consists of a mixing chamber 1 with a cap 2, a cylindrical guide 3, a loading tank 4, an aeration wall 5 of breathable fabric, a purge pipe 6 for feeding compressed heated gas, a driving screw 7 enclosed in a cylindrical guide 3 and made in the form of a dotted helix, an outlet nozzle 8 with a cooling jacket 9, a casing 10 provided with openings in the side surface, sending 3, from where the material is fed in cm by turns of the screw. The cooling chamber 1 is mounted along the reflective element 11 and to the peripheral part of the aerating partition 5. Under the aerating partition 5, warm air is supplied to loosen the material. The aerating wall 5 oscillates with the purge pipe 6 connected to the vibrator. Through the purge line 6, warm air is supplied to the outlet 8 to transport material. The loosening element 25 rotating together with the screw 7 with brushes, 26 sweeps the material off the surface of the reflective element 11, and the blades 27 additionally loosens the material in the mixing chamber 1. The material mixed with air in the mixing chamber 1 is sucked into the outlet 8 and transported along him in the air stream to the destination. During the operation of the feeder, coolant is supplied and discharged into the cooling jacket of the cylindrical guide 3 and the output cartridge-8, and air is sucked out of chamber 1 through pipe 18. 2 hp f-ly, 1 ill.

of an umbrella element 11, made in the form of an umbrella, bottom 12 with a pipe 13 for supplying compressed air under the aerating partition 5, rubber 5 of the membrane 14 for sealing the purge pipe 6, vibrator, made in the form of a rod 15 and eccentric 16, fitting 17 for supplying hot air into the purge O pipe 6, the aspiration pipe 18, the screen 19 to prevent material from entering the aspiration pipe 18, the screw drive reducer 20 7, the hinge rack 21 for attaching the outlet pipe 8, additional loosener The two elements 22 rigidly fastened with the screw 7, the nozzles 23 and 24 of supplying and draining coolant, the loosening element 25, made in the form of a shaped rod rigidly fastened to the screw ohm 7, brushes 26 and

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blades 27 mounted on the loosening element 25.

Hot gas is supplied in arrows A and partially used to transport material, and excess is removed in arrow A, raw powdered material is charged in arrow P, cold water is supplied in arrows a, merged in arrows a ,.

The feeder for pneumatic conveying works as follows.

The raw bulk material is fed into the loading container 4 and with additional loosening gates (1 items 22) is injected into the turns of the screw 7, which transports it to the inside of the mixing chamber 1 and seals the cylindrical guide 3 in the presence of material in it.

With a stitching element 11, the raw bulk material is thrown to the periphery of the aerating partition 5, and then the blades 27 are mixed and moved to the center of the partition 5. During this process, the aerating partition 5 vibrates due to the rotation of the eccentric 16 and hot gas is blown through it from the pat- chopping 13.

The combined effect of mixing, vibration, and gas jets divides the bulk material into individual particles and removes moisture from their surface. The gas jet coming through the holes in the casing 10, the previously prepared material is sucked into the outlet 8, where it is diluted to the required concentration and accelerated to the transport speed due to the gas jet coming from the purge pipe 6. Brushes 26, rotating , clean the surface of the detachable element 11 from adhering particles of material.

The cooling of the loading tank 4, the housing and the outlet nozzle 8 during transportation eliminates the adherence of material particles to the metal surface of the feeder.

The proposed feeder allows the transport of raw

VNIIPI Order 1111/20. Circulation 778

Random polygons pr-tie, Uzhgorod, st. Project, 4

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bulk material using vacuum transport and partly drying it during this operation directly from the warehouse to the process control process, which simplifies the transportation and further drying of the material to the required humidity.

Claims (3)

1. A feeder for pneumatic supply of engaging materials, containing a loading container and a mixing chamber, communicated by means of a cylindrical guide, enclosed in the last driving auger with a loosening element fixed at its lower end, an outlet branch pipe located at the inlet end in the mixing chamber, and a purge pipe installed in line with the outlet nozzle for supplying compressed air to the mixing chamber, due to the fact that, in order to increase reliability, it is equipped with a vibrator, connected with a purge pipe installed with the possibility of reciprocating movement, an aeration wall fixed between the walls of the mixing chamber and the outlet end of the purge pipe installed under the inlet end of the outlet pipe, open at the bottom of the casing with openings in the side surface and a baffle element consistently covering the inlet end of the outlet nozzle and blades mounted on the said loosening element above the aerating partition, wherein the screw is hollow and the outlet nozzle is installed inside it. 2. A feeder according to claim 1, characterized in that the screw is provided with at least one additional loosening element located in the loading container. 3. Feeder according to claim 1, which is equipped with brushes mounted on the first loosening element with the possibility of interaction with the working surface of the reflective element. Subscription