SU931796A1

SU931796A1 - Poweder feeder

Info

Publication number: SU931796A1
Application number: SU802974160A
Authority: SU
Inventors: Леонид Антонович Каденаций; Анатолий Александрович Морозов; Анатолий Петрович Мурашов; Дмитрий Сергеевич Ясь
Priority date: 1980-08-01
Filing date: 1980-08-01
Publication date: 1982-05-30

Description

(5) ПОРОШКОВЫЙ ПИТАТЕЛЬ(5) POWDER FEEDER

Изобретение относитс к спообам и устройствс1м дл покрыти изделий путем распылени металлов и может быть использовано дл нанесени покрытий на металлические детали путем плазменного напылени .The invention relates to hoops and devices for coating articles by spraying metals and can be used for coating metal parts by plasma spraying.

Известен порошковый питатель, включающий герметичный бункер, соединенный со смесительной камерой, дозирующий орган с приводом, обеспечивающий иода1у порошка в смесительную Кс1меру , а также систему трубопроводов дл подачи транспортирующего газа и питани порошком плазмотронаfl1.A powder feeder is known, which includes a hermetic hopper connected to the mixing chamber, a metering organ with a drive providing iodine powder to the mixing chamber, as well as a piping system for supplying carrier gas and feeding the powder of the plasma torch f1.

Недостаток питател заключаетс в том, что в процессе эксплуатации происходит образование сводов и пробок из порошка, а также быстрый износ f6O4ero органа в форме шнека при рате его с твердыми порсшковыми матеалами ,кроме того,при вибрации происходит сегрегаци смеси порошков.The lack of a feeder lies in the fact that during operation, the formation of arches and plugs from the powder occurs, as well as the rapid wear of the f6O4ero organ in the form of a screw, when rubbing it with solid powder materials, and segregation of the powder mixture occurs during vibration.

Наиболее близким к предлагаемому по технической сущности вл етс порошковый питатель, содержащий герметичный бункер с конической выходной частью, снабженный дозирующим органом В виде регулировочной иглы с центральным каналом дл подачи газа, соединенной с системой газопровод щих трубопроводов 2 .Closest to the proposed technical essence is a powder feeder containing a sealed bunker with a conical outlet part, equipped with a metering body. In the form of an adjusting needle with a central channel for supplying gas connected to the system of gas conducting pipelines 2.

Недостаток устройства - возможность образовани пробок из порошка в сужаклцемс зазоре между конусными концами иглы и частью бункера, а также неудобства в эксплуатации, так как необходим поворот устройства на 180° при загрузке и разгрузке через один The disadvantage of the device is the possibility of the formation of powder plugs in the socket between the tapered ends of the needle and the part of the bunker, as well as inconvenience in operation, since it is necessary to rotate the device by 180 ° during loading and unloading through one

10 и тот же канал.10 and the same channel.

Цель изобретени - повышение равномерности подачи порошка.The purpose of the invention is to improve the uniformity of the powder feed.

Поставленна цель достигаетс тем, что в порошковом питателе, соts держащем герметичный бункер с конической выходной частью, снабженный дозирук цим органом в виде регулировочной иглы с центральным каналом дл подачи газа, соединенной с систе20 мой газопровод щих трубопроводов, бункер выполнен с двойными стенками дл подачи газа между ними, причем внутренн стенка конической выходной части выполнена из пористого The goal is achieved by the fact that in a powder feeder, holding a sealed bunker with a conical outlet, equipped with a dispensing organ in the form of an adjusting needle with a central channel for supplying gas connected to a system of gas conducting pipelines, the bunker is double-walled between them, and the inner wall of the conical outlet part is made of porous

25 материала.25 stuff.

На чертеже приведен порошковый питатель , продольный разрез.The drawing shows a powder feeder, a longitudinal section.

Питатель состоит из корпуса 1 бункера , внутренней стенки 2, коническа The feeder consists of a body 1 of the hopper, the inner wall 2, conical

Claims

30 part 3 of which is made porous for gas supply; adjusting needle 4 o by a central through hole 5 connected to the gas supply line b. The needle 4 has the ability to move along its axis in the lid 7 of the bunker by means of a nut 8 The lid 7 is equipped with seals 9 and a filling neck 10. Gates And and 12 are installed on the gas conduit pipelines 6 and .13. The outlet 14 of the housing 1 is provided with a transporting hose 15. To supply gas into the housing 1, the wall 2 is made with an opening 16. The device works as follows. The powder is loaded through the filling neck 10 when the exit opening 14 of the hopper is locked with a needle 4. When the composition is changed, the powder for purging the conveyance of cleaning and removing the powder plugs into the central hole 5 of the needle serves the transporting gas with the needle hole 14 of the hopper closed and the valve 11 closed with a needle. The gas supply into the gap between the walls of the housing 1 when the valve 11 is open leads to the formation inside the hopper of the gas-powder mixture, which, when the needle 4 is lifted, enters the transporting hose 15 and along it to the plasma torch (not shown). The adjustment of the amount of powder supplied is carried out by raising the needle 4. The design advantages in comparison with the known feeders are as follows: the absence of plugs from the powder at the outlet of the bunker which increases the uniformity of the powder supply, as a result of which there is no need to disassemble the feeder to remove the side; the absence of arches and powder in the bunker due to the fact that the compressed gas, passing through the porous cone, creates a suspension of powder (gas-powder mixture) inside the bunker and eliminates powder friction against the bunker cone; the absence of segregation of the powder in the proposed solution, since in its design there is no vibrator, and vibration, as is well known, is the cause of segregation; during the transition from one type of powder to another, the feeder is cleaned without disassembling; the outlet from the hopper is blown through the central needle channel, and the inside of the hopper is cleaned by supplying gas inside it with an open filler neck and locked out of the hopper; improved operational property of cleaning the hopper without disassembling it. The invention of the Powder feeder containing a sealed bunker with a conical outlet part, equipped with a dispenser with an organ in the form of an adjusting needle with a central gas supply channel connected to the system of gas conducting pipelines, characterized in that, in order to increase the uniformity of the powder supply, the bunker made with twin walls to supply gas between them, and the inner wall of the conical outlet part is made of porous material. Sources of information taken into account in the examination 1. The author's certificate of the USSR 337445, cl. C 23 C 7/00, 1970.

2. Authors certificate of the USSR 278344, cl. C 23 C 7/00, 1968.

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