SU772679A1

SU772679A1 - Shmorgunis pneumatic regenerator

Info

Publication number: SU772679A1
Application number: SU64882656A
Authority: SU
Inventors: Яков Шаевич Шморгун
Original assignee: Минский тракторный завод
Priority date: 1964-02-24
Filing date: 1964-02-24
Publication date: 1980-10-23

Description

Изобретение относится к литейному производству и регенерации отработанных смесей пневматическим способом.The invention relates to foundry and regeneration of spent mixtures pneumatically.

Известны пневматические регенераторы для восстановления формовочных смесей, которые выполняются по параллель- ⁵ной, последовательной или смешенной .схеме.¹ Каждая из схем предусматривает секцию, в которой имеется вертикальная разгонная груба, внизу которой расположено сопло для подачи воздуха, а сверху — отбойный колпак. Воздух, выходя из сопла, захватывает песчинки, разгоняет их до нужной скорости при движении в трубе снизу вверх и.бросает на колпак. Пос- ₁₅ле истирания на колпаке первой секции песчинки падают вниз и попадают в другую, рядом расположенную аналогичную секцию £1].Known pneumatic regenerators for restoring moldable mixtures that are performed on ⁵ hydrochloric parallel, serial or mixed Scheme. ¹ Each of the schemes provides a section in which there is a vertical accelerating coarse, at the bottom of which there is a nozzle for supplying air, and on top - a jack cap. The air leaving the nozzle captures grains of sand, accelerates them to the desired speed when moving in the pipe from the bottom up and throws it onto the cap. ₁₅ Pos- le abrasion on the cap first section grains fall down and fall into another similar section located near £ 1].

Недостатком такой конструкции реге- 20 нератора является необходимость значительной скорости воздуха и большой длины разгонной трубы (2—2,5 м). Это влияет на увеличение габаритов установки и требует значительных энергозатрат на сжатый воздух.The disadvantage of this design of the regulator is the need for a significant air velocity and a long length of the booster pipe (2–2.5 m). This affects the increase in the dimensions of the installation and requires significant energy consumption for compressed air.

Цель изобретения — сокращение расхода энергии при разгоне песчинок.The purpose of the invention is the reduction of energy consumption during dispersal of grains of sand.

Поставленная цель достигается гем, что регенератор выполнен в виде расположенных одна над другой цилиндрических секций, с размещенной в каждой из них разгонной трубой, к верхнему концу которой прикреплена конусообразная воронка, а снизу — колпак.This goal is achieved by gem, that the regenerator is made in the form of cylindrical sections located one above the other, with an accelerating tube placed in each of them, to the upper end of which a cone-shaped funnel is attached, and a cap is attached to the bottom.

Движение воздуха и подача песка в разгонную трубу происходит сверху вниз.The movement of air and the supply of sand to the booster pipe occurs from top to bottom.

На чертеже представлена схема пневматического регенератора.The drawing shows a diagram of a pneumatic regenerator.

Пневматический регенератор состоит из цилиндрического корпуса 1, образованного несколькими вертикальными однотипными секциями.The pneumatic regenerator consists of a cylindrical body 1 formed by several vertical sections of the same type.

Каждая секция содержит разгонную трубу 2, колпак 3, сопло 4 для подачи воздуха и конусообразную воронку 5, соединенную своей нижней частью с входным отверстием разгонной трубы 2. Каждая секция имеет отсасывающее отверстие для удаления пыли. Корпус 1 имеет загрузочное 7 и разгрузочное 8 отверстия.Each section contains a booster pipe 2, a cap 3, a nozzle 4 for supplying air and a cone-shaped funnel 5 connected by its lower part to the inlet of the booster pipe 2. Each section has a suction port to remove dust. The housing 1 has a loading 7 and unloading 8 holes.

Регенератор работает следующим образом.The regenerator operates as follows.

При подаче сжатого воздуха в сопла 4 каскадно^:расположенных секций регенератора и загрузке отработанной смеси в загрузочное отверстие 7, смесь, попадая в конусообразную воронку 5, под действием собственного веса перемещается вниз к входному отверстию разгонной трубы 2. Там она захватывается потоком сжатого воздуха и приобретает значительную скорость при движении вниз до упора в колпак 3. Отраженные от колпака частицы песка собираются в конусообразной воронке 5 и поступают в последующую секцию для повторения операции, а воздух с пылью отсасывается через вентиляционные отверстия 6. При одинаковых скоростях сжатого воздуха в разгонной трубе, длина разгонной трубы в предлагаемом регенераторе значительно меньше по сравнению с известным регенератором, так как путь разгона песчи4 'нок при использовании ее веса значительно короче, чем при разгоне ее с подъемом вверх. Это позволяет сократить габариты установки и снизить удельный рас5 ход энергии на регенерацию.When compressed air is supplied to the nozzle 4 in cascade ^: located sections of the regenerator and the spent mixture is loaded into the loading hole 7, the mixture, falling into a cone-shaped funnel 5, moves under its own weight down to the inlet of the booster pipe 2. There, it is captured by a stream of compressed air and acquires significant speed when moving down to the stop in the hood 3. Sand particles reflected from the hood are collected in a cone-shaped funnel 5 and enter the next section to repeat the operation, and the air with dust discharged through ventilation openings 6. At the same compressed air speeds in the booster pipe, the length of the booster pipe in the proposed regenerator is much shorter than the known regenerator, since the acceleration path of sand 4 'nok when using its weight is much shorter than when accelerating it with lifting up . This makes it possible to reduce the dimensions of the installation and reduce the specific energy consumption for regeneration.

Claims

Iboretenenne refers to the foundry and the regeneration of waste mixtures by pneumatic method. Pneumatic regenerators are known for the recovery of molding sands, which are performed in parallel, serial or mixed circuit. Each of the diagrams provides a section in which there is a vertical expansion pipe, at the bottom of which there is a nozzle for air supply, and on top of it a fender cover. Air coming out of the nozzle, (grabs the grains of sand, accelerates them to the desired speed when moving in the pipe from the bottom up and throws it onto the cap. After rubbing on the cap of the first section, the grains fall down and fall into another, located next to the similar section ri. Disadvantage This design of the regenerator is the need for significant air velocity and a large length of the expansion pipe (2-2.5 m). This affects the increase in the dimensions of the installation And requires considerable energy consumption for compressed air. The purpose of the invention is to reduce energy consumption The goal is achieved by the fact that the regenerator is made in the form of cylindrical sections arranged one above the other, with an accelerating tube placed in each of them, with a conical funnel attached to the upper end and a bell cap at the bottom. The expansion pipe is from top to bottom. The drawing shows a diagram of a pneumatic regenerator. The pneumatic regenerator consists of a cylindrical body 1 formed of several vertical sections of the same type. Each section contains a spreader tube 2, a cap 3, an air nozzle 4 and a cone-shaped funnel 5 connected by its lower part to the inlet port of the spreader tube 2. Each 37 section has a dust extraction sump OLE 6. Case 1 has a boot 7 and 8 discharge openings. The regenerator works as follows. When compressed air is supplied to the nozzles 4 of cascade-mounted sections of the regenerator and the waste mixture is loaded into the inlet 7, the mixture falls into the conical funnel 5, under its own weight moves down to the inlet opening of the accelerating tube

2. There, it is captured by a stream of compressed air and acquires a significant speed when moving down to the stop

3. Reflected from the bell, the sand particles are collected in the cone-shaped funnel 5 and fed to the next section to repeat the operation, and the air and dust are sucked out through the vent holes 6. With the same. At the proposed regenerator, the length of the accelerating tube in the proposed regenerator is much less as compared to the known regenerator, since the acceleration path of sand, when using its weight, is much shorter than when it is accelerated with lift up. This reduces the size of the installation and reduces the specific energy consumption for regeneration. Pneumatic regenerator for recovery of waste sands, including accelerating pipes and hoods, characterized in that, in order to reduce energy consumption during acceleration of sand particles, it is made in the form of cylindrical sections located one above the other, placed in each of them. the upper end of which is attached cone-shaped funnel, and the bottom - cap. Sources of information taken into account npfi examination 1. Saygerov I. B. Regeneration of waste mixtures in the foundry industry. M., Mashgnz, 1961, p. 98-178.