SU1570832A2

SU1570832A2 - Arrangement for regeneration of sand

Info

Publication number: SU1570832A2
Application number: SU884416727A
Authority: SU
Inventors: Владимир Владимирович Хаустов; Александр Алексеевич Шишкин
Original assignee: Ворошиловградский машиностроительный институт
Priority date: 1988-03-15
Filing date: 1988-03-15
Publication date: 1990-06-15

Abstract

Изобретение относитс к литейному производству, а именно к регенерации отработанных формовочных смесей. Цель изобретени - расширение технологических возможностей устройства. Отработанную смесь через питатель 1 загружают в регенератор и подают на вращающийс конус 5 первого блока 2. При перемещении смеси по поверхности конуса 5 и попадании на отражатель 9 происходит оттирка св зующего материала. На блоке консольных стержней 7 осуществл етс разрыхление и разделение смеси по крупности, причем оттерта часть св зующего через отверсти выт гиваетс в вентил ционную систему и осаждаетс в циклоне 14. Остальную часть песка подают на следующую ступень оттирки, где процесс повтор етс . Благодар переменному углу наклона поверхности конусов 5 на первых ступен х происходит оттирание наиболее слабо скрепленных с песчинками пленок св зующих, а на каждой последующей - не более прочных. 1 ил.The invention relates to foundry, in particular, to the regeneration of waste molding sands. The purpose of the invention is to expand the technological capabilities of the device. The spent mixture through the feeder 1 is loaded into the regenerator and fed to the rotating cone 5 of the first block 2. When the mixture moves along the surface of the cone 5 and hits the reflector 9, the bonding material is rubbed. On the block of cantilevered rods 7, the mixture is loosened and divided by size, with part of the binder being wiped out through the holes and drawn into the ventilation system and deposited in the cyclone 14. The rest of the sand is fed to the next scouring stage, where the process is repeated. Due to the varying angle of inclination of the surface of the cones 5, at the first steps, rubbing of the binder films most weakly bonded to the sand grains occurs, and at each subsequent stage, not more durable ones are bonded. 1 il.

Description

The invention relates to foundry, namely the regeneration of waste molding sands. The purpose of the invention is the expansion of the technological capabilities of the device. The spent mixture through the feeder 1 is loaded into the regenerator and fed to the rotating cone 5 of the first block 2. When the mixture moves along the surface of the cone 5 and hits the reflector 9, the bonding material is rubbed. On the block of cantilever rods 7, the mixture is loosened and divided by size, with the worn portion of the binder being pulled out through the holes into the ventilation system and deposited in the cyclone 14. The rest of the sand is fed to the next rubbing stage, where the process repeats. Due to the variable angle of inclination of the surface of the cones 5, at the first steps, the bonding of the most weakly bonded films with grit is rubbed off, and more durable on each subsequent sand film. 1 il.

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The invention relates to foundry, namely the regeneration of waste molding sands.

The purpose of the invention is the expansion of the technological capabilities of the device.

The drawing shows a diagram of the proposed device.

The device consists of a feeder 1, blocks 2, collected in cascade. The blocks 2 includes a housing 3, a drive shaft 4 with 10 cones 5, a chute 6, a block of cantilever inclined rods 7, a chute 8 and baffle rings 9. The shafts of adjacent blocks are connected by a clutch 10. The bottom of the lower block is performed as two ring receivers suitable 11 and a large 12 fractions. In the housing 3 in the place of attachment of the rods 7, holes are made for exhaust ventilation 13. Each unit is equipped with an individual cyclone 14. Cone 5 in blocks 2 20 is installed with a different angle of inclination to the horizon, mainly with an increase in the angle of inclination at each subsequent step of rubbing.

The device works as follows: 25

zom.

The waste mixture through the feeder 1 is loaded into the regenerator and fed to the rotating cone 5 of the first block 2. When the mixture is moved along the surface of the cone 30 5 and when it hits the reflector 9, the bonding material is rubbed. Then from. grated mixture gets on the console block

rods 7, where the loosening and separation of the mixture by size is carried out, the worn portion of the binder being pulled out through the holes into the ventilation system 5 and deposited in the cyclone 14. The rest of the sand is fed to the next stage of rubbing, where the process repeats. The rubbed sand falls into the receiver 11, and the unprocessed pieces of the mixture go to the receiver 12. Due to the variable angle of inclination of the surface of the cones 5, at the first steps, the rubbing of the binder films most weakly bonded to grains and more durable is performed. Separate withdrawal and deposition of such films allow to obtain separately inert, entering the dump, and active, reusable, part of the binder material,

Claims

Claim

A device for the regeneration of sand auth.St. GF 1411090, distinguished by the fact that, in order to expand technological capabilities, it is equipped with dust deposition units, such as cyclones, connected to the vent nozzles, and accelerator cones are fixed with possible changes in the angle of inclination relative to the horizontal plane, mainly increasing, in the direction to unloading pipes.