SU891346A1

SU891346A1 - Jet device

Info

Publication number: SU891346A1
Application number: SU792763125A
Authority: SU
Inventors: Валерий Абрамович Косой; Виталий Дмитриевич Капитанов
Original assignee: Проектно-Технологическо-Конструкторское Бюро Главного Управления Министерства Путей Сообщения
Priority date: 1979-05-07
Filing date: 1979-05-07
Publication date: 1981-12-23

Description

Изобретение относится к обработке металлов свободным абразивом и может быть использовано в станкоинструментальной, металлургической, судоремонт тной и других отраслях промышленно-, сти. ⁵ The invention relates to the processing of metals with a free abrasive and can be used in machine tool, metallurgical, ship repair and other industries. ⁵

Известны струйные аппараты, в которых сопловая головка соединена с источником подачи сжатого воздуха .через смесительную камеру, в которую подается свободный абразив или дробь [Ί3. ¹⁰Недостатком известного аппарата является невысокая производительность Цель изобретения повышение производительности путем подачи рабочих частиц в смесительную камеру с некоторой начальной скоростью.Inkjet devices are known in which the nozzle head is connected to a source of compressed air through a mixing chamber into which free abrasive or shot is fed [Ί3. ¹⁰ The disadvantage of the known apparatus is the low productivity. The purpose of the invention is to increase productivity by feeding the working particles into the mixing chamber at a certain initial speed.

Поставленная цель достигается тем, что смесительную камеру выполняют в виде цилиндра, ось вращения которого размещена в плоскости, перпендикулярной оси сопловой головки, а внутри смесительной камеры устанавливают ротор, лопасти которого расположены с возможностью обеспечения разгона дроби и подачи ее под струю сжатого воздуха.The goal is achieved in that the mixing chamber is made in the form of a cylinder, the axis of rotation of which is placed in a plane perpendicular to the axis of the nozzle head, and a rotor is installed inside the mixing chamber, the blades of which are arranged to accelerate the shot and supply it under a stream of compressed air.

На фиг. 1 схематически изображен предлагаемый струйный аппарат; на фиг. 2 - смесительная камера,^ резреэ.In FIG. 1 schematically shows the proposed inkjet apparatus; in FIG. 2 - mixing chamber, ^ rezre.

Аппарат состоит из сепаратора 1, эжектора 2 и смесительной камеры 3, внутри которой в шарикоподшипниках смонтирован ротор 4 с лопастями 5, которые расположены в корпусе смесительной камеры с возможностью обеспечения разгона дроби и подачи ее под струю сжатого воздуха. Входное отверстие смесительной камеры выполнено в виде сопла 6 - эжектора.The apparatus consists of a separator 1, an ejector 2 and a mixing chamber 3, inside of which a rotor 4 with blades 5 is mounted in ball bearings, which are located in the housing of the mixing chamber with the possibility of accelerating the shot and feeding it under a stream of compressed air. The inlet of the mixing chamber is made in the form of a nozzle 6 - ejector.

На корпус 7 смесительной камеры установлены краны 8 и 9 управления для подвода сжатого воздуха по шлангу 10 от магистрали. Кран 8 управления соединен с помощью шланга 1 1 с эжектором 2, а кран 9 управления - с соплом 6.On the housing 7 of the mixing chamber mounted control valves 8 and 9 for supplying compressed air through a hose 10 from the highway. The control valve 8 is connected via a hose 1 1 to the ejector 2, and the control valve 9 is connected to the nozzle 6.

Из смесительной камеры 3 по шлангу 12 дробь подводится к рабочей головке 13, откуда дробь вместе с пылью отсасывается по шлангу 14 в сепаратор 1.From the mixing chamber 3 through the hose 12, the shot is fed to the working head 13, from where the shot along with the dust is sucked out through the hose 14 into the separator 1.

Устройство работает следующим образом.The device operates as follows.

Дробь засыпается в сепаратор 1, сжатый воздух от компрессора ( не показан ) с помощью шланга 10 подается к корпусу 7, который проходными отверстиями соединен с кранами 8 и 9 управления. Открытием крана 8 управления осуществляется подача сжатого воздуха через шланг 11 к эжектору 2, который создает разряжение в рабочей головке 13. Краном 9 управления сжатый воздух подается в смесительную камеру 3 через входное отверстие ( сопло (>) , направляясь через выходное отверстие смесительной камеры по шлангу 12 к рабочей головке 13, создавая при этом в смесительной камере разряжение, обеспечивающее пересыпку частиц дроби из сепаратора 1 в смесительную камеру 3,The fraction is filled in the separator 1, the compressed air from the compressor (not shown) is supplied via the hose 10 to the housing 7, which is connected with the control valves 8 and 9 through the openings. By opening the control valve 8, compressed air is supplied through the hose 11 to the ejector 2, which creates a vacuum in the working head 13. By the control valve 9, the compressed air is supplied to the mixing chamber 3 through the inlet (nozzle (>), directed through the outlet of the mixing chamber through the hose 12 to the working head 13, while creating a vacuum in the mixing chamber, ensuring the transfer of particles of the fraction from the separator 1 into the mixing chamber 3,

Поток воздуха в промежутке между входным и выходным отверстиями смесительной камеры 3 воздействует на лопасти 5 ротора 4, заставляя последний вращаться с окружной скоростью, почти равной скорости истечения воздуха из сопла 6.The air flow in the gap between the inlet and outlet openings of the mixing chamber 3 acts on the blades 5 of the rotor 4, forcing the latter to rotate at a peripheral speed almost equal to the speed of air flow from the nozzle 6.

Лопасти 5 захватывают поступающие ыз сепаратора 1 частицы дроби и придают им уже определенную начальную, скорость до момента подхватывания их потоком воздуха, вытекающего из сопла 6. При этом частицы дроби взаимодействуют с потоком воздуха, имея первоначальную скорость движения в том же· направлении, э котором направлен поток воздуха из сопла 6.Далее частицы дроби по шлангу 12 поступаютThe blades 5 capture the particles of the fraction coming in from the separator 1 and give them an already determined initial velocity until they are picked up by the air stream flowing out of the nozzle 6. Moreover, the particles of the fraction interact with the air stream, having the initial speed in the same direction as air flow from nozzle 6 is directed. Further particles of shot through hose 12 enter

891346 4 к рабочей головке 13» Пыль вместе с частицами дроби отсасывается с очищаемой поверхности по шлангу 14 в сепаратор 1, откуда пыль через эжек5 тор 2 выбрасывается наружу, а дробь оседает в сепараторе и'заново поступает в смесительную камеру.891346 4 to the working head 13 ”The dust, together with the particles of the shot, is sucked off from the surface to be cleaned through the hose 14 to the separator 1, from where the dust is ejected out through the ejector 5, and the shot settles in the separator and then enters the mixing chamber.

Количество сжатого воздуха, подаваемого к смесительной камере 3 или 10 эжектору 2, регулируется степенью открытия кранов 8 и 9 управления, а количество подаваемой в смесительную камеру 3 дроби регулируется положением рукоятки 15, фиксируемой в 1S секторе 16, имеющем вырезы.The amount of compressed air supplied to the mixing chamber 3 or 10 of the ejector 2 is controlled by the degree of opening of the control valves 8 and 9, and the amount of fraction supplied to the mixing chamber 3 is controlled by the position of the handle 15 fixed in the 1S sector 16 having cutouts.

Использование изобретения позволяет повысить производительность обработки путем увеличения начальной скорости дроби.The use of the invention improves the processing productivity by increasing the initial speed of the fraction.

Claims

The invention relates to the treatment of metals with a free abrasive and can be used in machine tool, metallurgical, ship repair and other industries. sti. Jet apparatuses are known in which the nozzle head is connected to a source of compressed air supply through a mixing chamber into which free abrasive or fraction fi is supplied. A disadvantage of the known apparatus. The goal of the invention is to increase the productivity by feeding the working particles into the mixing chamber with a certain initial velocity. This goal is achieved by the fact that the mixing chamber is made in the form of a cylinder, the axis of rotation of which is placed in a plane perpendicular to the axis of the nozzle head, and a rotor is installed inside the mixing cap, the blades of which are arranged to provide acceleration of the shot and supply it under a jet of compressed air. FIG. 1 schematically shows the proposed jet apparatus; in fig. 2 - mixing chamber, cut. The apparatus consists of a separator 1, an ejector 2 and a mixing chamber 3, inside which a ball rotor with blades 5 / is mounted in ball bearings and located in the mixing chamber body with the possibility of accelerating the shot and supplying it under a stream of compressed air. The inlet of the mixing chamber is made in the form of a nozzle 6 - an ejector. Control valves 8 and 9 are installed on the housing 7 of the mixing chamber for supplying compressed air through the hose 10 from the line. The control valve 8 is connected by means of a hose 1 1 to the ejector 2, and the control valve 9 is connected to a nozzle 6. From the mixing chamber 3 through a hose 12, the fraction is supplied to the working head 13, from where the fraction together with dust is sucked through the hose lA into the separator 1. Device works as follows. The fraction is poured into the separator 1, the compressed air from the compressor (not shown) is fed through a hose 10 to the housing 7, which is connected to the control valves 8 and 9 through the openings. By opening the control valve 8, compressed air is supplied through the hose 11 to the ejector 2, which creates a discharge in the working bay 13. With the compression control valve 9, the air is supplied to the mixing chamber 3 through the inlet (nozzle ()), directed through the outlet The opening of the mixing chamber through the hose 12 to the working head 13, soaking up the discharge chamber in the mixing chamber, ensures the transfer of shot particles from the separator 1 to the mixing chamber 3, the air flow in the gap between the inlet and outlet openings of the mixture; Camera 3 acts on Lo: - 5 rotor + parts, made the last scramble at a speed almost equal to the speed of air outflow from the nozzle 6; Blades 5 capture incoming particles 3 separators 1 and give them a certain initial speed until they are picked up The air stream flowing out of the nozzle 6. At the same time, the particles of the shot interact with the air stream, having the initial speed in the direction JJM, which is the direction of the air flow from the nozzle 6. Next, the particles of the shot go through the hose 12 6. 4 to the working head 13 The dust together with the shot particles is sucked from the surface to be cleaned through an It hose into the separator 1, from where dust through the ejector 2 is thrown out, and the fraction settles in the separator and enters the mixing chamber. The amount of compressed air supplied to the mixing chamber 3 or ejector 2 is controlled by the degree of opening of the taps 8 and 9 of the control, and the amount supplied to the mixing chamber 3 is controlled by the position of the handle 15 fixed in the sector 16 having notches. The use of the invention improves processing performance by increasing the initial shot rate. Invention Inkjet apparatus comprising a nozzle head connected through a mixing chamber with a source of compressed air, characterized in that, in order to increase productivity by increasing the initial fractional velocity, the mixing chamber is designed as a cylinder, the axis of rotation of which is placed in a plane perpendicular the axis of the nozzle head, and is equipped with a rotor freely mounted in its housing, the blades of which are arranged so as to ensure the acceleration of the shot and its supply to the jet compressed into airs Sources of information taken into account in the examination 1, Bilik S.I. Abrasive-liquid metal working, M., Nashgiz, I960, p 158, fig. 97.