SU619798A2

SU619798A2 - Metering closure

Info

Publication number: SU619798A2
Application number: SU772455832A
Authority: SU
Inventors: Борис Иванович Заикин; Владимир Андреевич Украинский
Original assignee: Zaikin Boris; Uk Vladimir A
Priority date: 1977-02-23
Filing date: 1977-02-23
Publication date: 1978-08-15

Description

Изобретение относитс к дозирующим усгройстеам, предназначено дл дозировани жидкостей, порошков, газов и их смесей .This invention relates to metering units, intended for metering liquids, powders, gases and mixtures thereof.

Известный затвор-дозатор по авт.св. № 451912 содержит расходный бункер дл дозируемого материала с выпускным патрубком в нижней части, два запорных элемента, соединенных шарнирной т гой, из которых один элемент выполнен в виде клапана, например, конусного, а другой выполнен полым, эластичным и соединен внутренней полостью с воздушной магистралью .Famous shutter-dispenser auth.St. No. 451912 contains a feed hopper for the dosing material with an outlet in the lower part, two locking elements connected by a hinge rod, of which one element is designed as a valve, for example, conical, and the other is hollow, elastic and connected by an internal cavity to the air line .

Однако в этом устройстве с течением времени снижаетс точность дозировани из-за неплотного прикрыти дозирующего патрубка нижним запорным эластичны клапаном, вследствие изменени упругих свойств эластичного материала - старени материала.However, in this device, the dosing accuracy decreases over time due to the leaky cover of the metering tube by the lower shut-off valve elastic, due to a change in the elastic properties of the elastic material — aging of the material.

Цель изобретени - повышение точности дозировани .The purpose of the invention is to improve the accuracy of dosing.

Это достигаетс тем, что в предлагаемом затворе-дозаторе внутр енн полость эластичного запорного элемента соединена с магистралью вакуума, при этом на воздушной магистрали и магис1 рали вакуума установлены соответственно нормально закрытое и нормапьно рпфтое запорные реле.This is achieved by the fact that, in the proposed gate-metering unit, the internal cavity of the elastic locking element is connected to the vacuum main, while the normally closed and normally closed locking relays are installed on the air line and vacuum magnets.

На чертеже изображена привовпиаль- на схема предлагаемого затвора-дозат1 ра ..The drawing shows the preferred circuit of the proposed shutter-dosatra ..

Claims

The shutter-metering device contains a feed bin 1 for: a dosing mat arial on the outlet nozzle 2, a triple nozzle 3, connecting the inner recess of the elastic locking element 4 with magisgrafyu of the compressed air 5 and the vacuum main 6 Turnips 7 and 8. In addition, the dispenser houses a stop cone 9, which is connected. a hinged togoo 1O with an epastic closure of 9Pvmen “VOLUME 4. The latter is protected from a & a - a wear screen, for example, in the form of a cone 11, 36. The shutter-metering works as follows. From the feed hopper 1, the dosing material flows through the exhaust cuts of the cuttings 2 to the dosing site. When the control signal is supplied via the pneumatic line, relay 8 is locked and relay 7. opens. In pipe 3, the internal cavity of the elastic locking element 4 compressed air is generated. The locking element 4 is enlarged (shown by dotted lines), compresses the material bsh at the neck wall, thereby terminating the distant | neck its arrival from the bunker 1. Its expansion is limited by the inner walls of the pipe. The increase in the locking element, 4 leads to the axial movement of the 1O rod, which lowers the lower locking cone 9. The material is released. When the control signal is REMOVED, the relays 7 and 8 return to their original state, while the relay 8 connects the nozzle 3 to the vacuum main. The elastic locking element 4 is resumed to its initial position, tightly pressing the locking cone 9 to the outlet of the nozzle 2 and freeing the passage of material from the hopper. The application of the invention will reduce the requirements for the elastic properties of the material from which the elastic closure element is made, which will reduce the cost of construction. Claims of the invention Shutter-dose of mountains according to ed.St. No. 451912, characterized in that, in order to improve the metering accuracy, the internal cavity of the elastic locking element is connected to the vacuum main, while the normally closed and normally open stop relays are installed on the air main and the vacuum main. Sources of information taken into consideration during the examination: 1. Copyright certificate № 451912, cl. Q O1 f 11/34, 1973. 9praV / 1/1 signal b, Lp; : ;; Y: ... Vr: “Compressed

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