SU885810A1

SU885810A1 - Device for metering out liquids

Info

Publication number: SU885810A1
Application number: SU711715128A
Authority: SU
Inventors: Сергей Васильевич Никитин; Александр Емельянович Степанов
Original assignee: Предприятие П/Я Р-6476
Priority date: 1971-11-16
Filing date: 1971-11-16
Publication date: 1981-11-30

Description

Изобретение относится к дозирующим устройствам, а именно к дозаторам, применяемым при производстве пенопластов.The invention relates to dispensing devices, namely to dispensers used in the production of foams.

Известны дозирующие устройства, выполненные из двух мерных, автоматически переключающихся цилиндров, имеющих гибкую диафрагму, заполненных нейтральной рабочей жидкостью,соединенных между собой трубкой и жестких перфорированных перегородок,помещенных в цилиндрах (1].Known dispensing devices made of two dimensional, automatically switching cylinders having a flexible diaphragm, filled with a neutral working fluid, interconnected by a tube and rigid perforated partitions placed in the cylinders (1].

Однако в таких устройствах нельзя дозировать более одного компонента, а для дозирования нескольких компонентов надо устанавливать, соответственно, несколько таких устройств, при, этом не обеспечивается требуемая точность дозирования.:.However, in such devices it is impossible to dose more than one component, and for dispensing several components it is necessary to install, respectively, several such devices, while the required dosing accuracy is not ensured.:.

Кроме того, такими устройствами нельзя регулировать дозу без разборки камеры и без изменения объема рабочей жидкости в системе.In addition, such devices cannot be used to adjust the dose without disassembling the chamber and without changing the volume of the working fluid in the system.

Известны также дозаторы для подачи смазки, содержащие, дозирующие камеры с подвижным разделителем полостей, каждая из которых сообщена черёэ распределитель.с источником дозируемой жидкости и с потребителем. Распределитель , имеющий -две выходные линии, выполнен в виде двух трехходовых автоматических клапанов, каж- . дый из которых сообщен- с одной изDispensers for supplying lubricant are also known, comprising dispensing chambers with a movable cavity separator, each of which is connected by a distributor with a source of dosed liquid and with a consumer. A distributor having two output lines is made in the form of two three-way automatic valves, each. dy of which is communicated with one of

- выходных линий распределителя источника питания и выполнен в виде эластичного трубчатого элемента, герметично закрепленного одним концом в расточке корпуса и обхватывающего стержень, в котором выполнены сообщающиеся осевой и радиальные каналы, причем эластичный элемент установлен с натягом по стержню и с зазором в расточке корпуса в зоне радиальных каналов, с натягом в расточке корпуса и с зазором по стержню в зоне незакрепленного конца элемента, а осевой канал и полости зазоров между эластичным элементом и корпусом, эластичным элементом и стержнем со20 общены.соответственно с потребителем, с выходной линией распределителя источника питания и с одной из полостей дозирующей камеры [2].- output lines of the power source distributor and is made in the form of an elastic tubular element hermetically fixed at one end in the housing bore and wrapping a rod in which communicating axial and radial channels are made, the elastic element being installed with an interference fit over the shaft and with a gap in the housing bore in the zone radial channels, with an interference fit in the bore of the body and with a clearance along the rod in the area of the loose end of the element, and the axial channel and the cavity of the gaps between the elastic element and the body, elastic element and the rod is so20 obscheny.sootvetstvenno with the consumer, to the output line and a power supply distributor to one of the cavities of the dosing chamber [2].

Однако в известном дозаторе недостаточно высоки точность и надежность дозирования.However, in the known dispenser, the accuracy and reliability of dosing are not high enough.

Цель изобретения т повышение точности и надежности .дозирования. Указанная цель достигается тем, 30 что в. известном- устройстве для дози рования жидкостей, содержащем гидропривод и дозирующие камеры с перегородкой и запорными элементами, а также систему управления и диафрагменные насосы, дозирующие камеры выполнены в полости установленных дополнительно . поршневых цилиндров, поршни которых через шток связаны с подвижными стенками диафрагменных камер, причем цилиндры выполнены последоваS тельно сдвоенными, каждый цилиндр связан с диафрагменным насосом, установлен подвижно, кинематически связан со штоком привода и отделен от соседнего торцовой перегородкой, выполненной в виде перепускного сопла.The purpose of the invention is to increase the accuracy and reliability of the dosing. The specified goal is achieved by 30 c. the known device for dispensing liquids containing a hydraulic actuator and metering chambers with a baffle and shut-off elements, as well as a control system and diaphragm pumps, metering chambers, are made in the cavity installed additionally. piston cylinders, the pistons of which are connected through the rod to the movable walls of the diaphragm chambers, and the cylinders are sequentially doubled, each cylinder is connected to the diaphragm pump, mounted movably, kinematically connected to the actuator rod, and separated from the adjacent end wall, made in the form of a bypass nozzle.

На чертеже изображено предлагаемое устройство для дозирования жидкостей, общий вид.The drawing shows the proposed device for dispensing liquids, General view.

Устройство содержит корпус 1, разделенный перегородкой 2, эластичные диафрагмы 3 и 4, которые образуют полости 5-8, пружины 9 и 10, подвижные цилиндры 11 и 12, на наружной поверхности которых выполнена резьба 13, сопла 14 и 15, которые составляют целое с цилиндрами 11 и 12. В цилиндрах размещаются поршни 16 и 17, штоки которых 18 и 19 шарнирно соединены с диафрагмами 3 и 4, и вытеснители 20 и 21. К цилиндрам 11 и 12 подсоединены стаканы 22 и 23 с крышками 24 и 25, в стаканах 22 и 23 размещены пружины 26 и 27, винты настройки 28 и 29. На корпусе' 1 установлены гайки настройки 30, а также патрубки 31 и 32 для подвода сжатого воздуха через кран 33 управления.The device comprises a housing 1, separated by a partition 2, elastic diaphragms 3 and 4, which form cavities 5-8, springs 9 and 10, movable cylinders 11 and 12, on the outer surface of which a thread 13 is made, nozzles 14 and 15, which are integral with cylinders 11 and 12. Pistons 16 and 17 are located in the cylinders, the rods of which 18 and 19 are pivotally connected to the diaphragms 3 and 4, and the displacers 20 and 21. Glasses 22 and 23 are connected to the cylinders 11 and 12 with caps 24 and 25, in the glasses 22 and 23, springs 26 and 27, adjustment screws 28 and 29 are located. Setting nuts 30 are installed on the housing '1, as well as atrubki 31 and 32 for supplying compressed air via a control valve 33.

Внутренние полости цилиндров 11 и 12 и полости 5 и 6 с помощью патрубков 34 - 37,соединяются с диафрагменными насосами/38 - 41, которые снабжены патрубками 42 - 45 для всасывания компонентов й патрубками 4649 для подачи компонентов потребителя (например, на смеситель). Полости 5 и 6, цилиндры 11 и 12 и патрубки 34 - 37 заполнены рабочей жидкостью, например низковязким маслом.The internal cavities of the cylinders 11 and 12 and the cavities 5 and 6 are connected with nozzles 34 - 37 to the diaphragm pumps / 38 - 41, which are equipped with nozzles 42 - 45 for suction of the components and nozzles 4649 for supplying consumer components (for example, to the mixer). Cavities 5 and 6, cylinders 11 and 12, and nozzles 34 - 37 are filled with a working fluid, for example, low viscosity oil.

Устройство работает следующим образом.The device operates as follows.

По патрубку 31 через кран 33 управления подается сжатый воздух в полость 8. Под действием давления воздуха диафрагма начинает перемещаться, выталкивая рабочую жидкость через сопло 15 и патрубок 35 в полость над диафрагмой насоса 40, одновременно с диафрагмой начинает перемещаться поршень 17, который шарнирно связан через шток 19 с диафрагмой 4. Под действием поршня рабочая жидкость вытесняется по патрубку 37 в полость над диафрагмой насоса 41. Диафрагма 4 перемещается до тех пор, пока не перекроется сопло 15. После окончания хода диафрагмы 4 кран 33 переключается и воздух по патрубку подается в полость 7, а диафрагма 3 начинает выталкивать рабочую жидкость через сопло 14 и патрубок 36 в полость над диафрагмой насоса 39.Compressed air is supplied through the nozzle 31 through the control valve 33 to the cavity 8. Under the action of air pressure, the diaphragm begins to move, pushing the working fluid through the nozzle 15 and the nozzle 35 into the cavity above the diaphragm of the pump 40, while the piston 17, which is pivotally connected through the diaphragm, begins to move rod 19 with a diaphragm 4. Under the action of the piston, the working fluid is displaced through the nozzle 37 into the cavity above the diaphragm of the pump 41. The diaphragm 4 moves until the nozzle 15 closes. After the end of the diaphragm 4, the valve 33 It turns off and air is supplied through the nozzle to the cavity 7, and the diaphragm 3 begins to push the working fluid through the nozzle 14 and the nozzle 36 into the cavity above the diaphragm of the pump 39.

Одновременно из полости цилинд- . ра 11 под действием поршня 16 по патрубку 34 рабочая жидкость перетекает в полость под диафрагмой насоса 38. В момент, когда рабочая жидкость перетекает в насосы 38 и 39, диафрагмы, насосов 40 и 41 под 'действием пружин насосов 40 и 41, диафрагма 4 и поршень 17 под действием давления рабочей жидкости и пружин 10 и 27 возвращаются в исходное положение, и по патрубкам 44 и 45 компоненты из емкостей всасываются насосами. По окончании хода диафрагмы 3 кран переключается, воздух подается в полость 8 и происходит процесс выдавливания компонентов под действием, рабочей жидкости из патрубков 48 и 49 насосов 40 и 41, а рабочая жидкость из насосов 38 и 39 перетекает в полость цилиндра 11, и полость 5 и насосы 38 и 39 по патрубкам 42 и 43 всасывают компоненты из емкости. По окончании обратного хода диафрагмы 4 происходит выдавливание компонентов из насосов 38 и 39 по патрубкам 46 и 47 и всасывание компонентов в насосах 40 и 41.At the same time from the cavity of the cylinder. RA 11 under the action of the piston 16 through the nozzle 34, the working fluid flows into the cavity under the diaphragm of the pump 38. At the time when the working fluid flows into the pumps 38 and 39, the diaphragm, the pumps 40 and 41 under the action of the springs of the pumps 40 and 41, the diaphragm 4 and the piston 17 under the influence of the pressure of the working fluid and springs 10 and 27 are returned to their original position, and along the nozzles 44 and 45 components from the containers are sucked up by the pumps. At the end of the stroke of the diaphragm 3, the valve switches, air is supplied to the cavity 8 and the components are extruded by the action of the working fluid from the nozzles 48 and 49 of the pumps 40 and 41, and the working fluid from the pumps 38 and 39 flows into the cavity of the cylinder 11, and the cavity 5 and pumps 38 and 39 through the nozzles 42 and 43 suck components from the tank. At the end of the reverse stroke of the diaphragm 4, the components are extruded from the pumps 38 and 39 through the nozzles 46 and 47 and the components are sucked into the pumps 40 and 41.

Изменение дозы производится с помощью гайки 30, при вращении которой изменяется расстояние между соплами 14 и 15, и диафрагмы 3 и 4, а следовательно, изменяется доза рабочей жидкости, переливаемой в насосы 38 41. Соотношение компонентов изменяется с помощью вытеснителей 20 и 21, которые при вращении винтов 28 и 29 вдвигаются или выдвигаются из полостей цилиндров 11 и 12 и соответственно изменяют объем жидкости, находящейся в полости цилиндров.The dose is changed using a nut 30, during rotation of which the distance between the nozzles 14 and 15 and the diaphragm 3 and 4 changes, and consequently, the dose of the working fluid poured into the pumps 38 41 changes. The ratio of the components is changed using the displacers 20 and 21, which when the screws 28 and 29 are rotated, they move in or out of the cavities of the cylinders 11 and 12 and accordingly change the volume of fluid in the cylinder cavity.

Claims

The invention relates to dispensing devices, namely, dispensers used in the manufacture of foams. Dosing devices are known, made of two-dimensional, automatically switching cylinders with a flexible diaphragm, filled with a neutral working fluid, interconnected by a tube and rigid perforated partitions placed in cylinders I. However, in devices it is impossible to dose more than one component, and for the dosing of several components must be installed, respectively, several such devices, if this does not ensure the required dosing accuracy.:. In addition, such devices cannot adjust the dose without disassembling the chamber and without changing the volume of the working fluid in the system. Also known are dispensers for lubricant supply, containing dispensing chambers with a movable cavity separator, each of which is communicated through a distributor with a source of dispensed liquid and with a dispenser. The valve i imenvdiy -two output lines, is made in the form of two three-way automatic valves, each of which communicates with one of the output lines of the power supply distributor and is made in the form of an elastic tubular element, hermetically fixed at one end in the bore of the housing and grasping the rod, The axial and axial channels are connected, the elastic element is installed with a tension on the rod and with a gap in the bore of the housing in the zone of the radial channels, with a tension in the bore of the housing and with by the rod in the area of the loose end of the element, and the axial channel and the cavities of the gaps between the elastic element and the housing, the elastic element and the rod communicate with the consumer, respectively, with the output line of the power source distributor and with one of the dosing chamber cavities

2. However, in a known dosing unit, the accuracy and reliability of dosing is not high enough. The purpose of the invention is to improve the accuracy and reliability of dosing. This goal is achieved by c. a known device for metering liquids, containing a hydraulic actuator and metering chambers with a partition and locking elements, as well as a control system and diaphragm pumps, metering chambers are made in the cavity of an additionally installed piston cylinder, the pistons of which are connected to the movable pistons through a rod the walls of the diaphragm chambers, the cylinders being sequentially doubled, each cylinder connected with a diaphragm pump, is movably mounted, kinematically connected with the drive rod and separated from the adjacent ortsovoy partition formed as a bypass nozzle. The drawing shows the proposed device for dispensing liquids, a general view. The device comprises a housing 1, divided by a partition 2, elastic diaphragms 3 and 4, which form cavities 5-8, springs 9 and 10, movable cylinders 11 and 12, on the outer surface of which are thread 13, nozzles 14 and 15, which are They are integral with cylinders 11 and 12. The pistons 16 and 17 are located in the cylinders, the rods of which 18 and 19 are pivotally connected to the diaphragms 3 and 4, and the displacers 20 and 21. To the cylinders 11 and 12 are connected glasses .22 and 23 with caps 24 and 25, in the cups 22 and 23 there are springs 26 and 27, setting screws 28 and 29. On the body 1, setting nuts 30 are installed, and ta also nozzles 31 and 32 for the supply of compressed air through the valve 33 controls. The internal cavities of the cylinders 11 and 12 and the cavities 5 and 6 are connected by means of nozzles 34-37 to diaphragm pumps 38 to 41, which are provided with nozzles 42-45 for sucking components and nozzles 4649 for supplying consumer components (for example, to a mixer) . Cavities 5 and 6, cylinders 11 and 12 and nozzles 34 - 37 are filled with a working fluid, for example low-viscosity oil. The device works as follows. The nozzle 31 through the control valve 33 supplies compressed air to the cavity 8. Under the action of air pressure, the diaphragm starts to shift / admits, pushing the working fluid through the nozzle 15 and nozzle 35 into the cavity above the diaphragm of the pump 40, simultaneously with the diaphragm the piston 17 starts to move which is pivotally connected via diaphragm 4 via rod 19. Under the action of a piston, the working fluid is displaced through pipe 37 into the cavity above the diaphragm of pump 41. Diaphragm 4 moves until nozzle 15 overlaps. After the end of diaphragm 4 travels, valve 33 the air is switched over through the nozzle 32 to the cavity 7, and the diaphragm 3 begins to push the working fluid through the nozzle 14 and the nozzle 36 into the cavity above the diaphragm of the pump 39. Simultaneously from the cylinder cavity-. ra 11 under the action of the piston 16 through the pipe 34 working fluid flows into the cavity under the diaphragm of the pump 38. At the moment when the working fluid flows into the pumps 38 and 39, the diaphragm, pumps 40 and 41 under the action of the springs of the pumps 40 and 41, the diaphragm 4 and the piston 17, under the action of the pressure of the working fluid and the springs 10 and 27, they return to their original position, and through the nozzles 44 and 45, the components from the containers are sucked in by the pumps. At the end of the stroke of the diaphragm 3, the valve 33 switches, the air is supplied to the cavity 8 and the process of extrusion of the components takes place under the action. the working fluid from the pipes 48 and 49 of the pumps 40 and 41, and the working fluid from the pumps 38 and 39 flows into the cavity of the cylinder 11, and the cavity 5 and the pumps 38 and 39 through the pipes 42 and 43 suck the components from the tank. At the end of the return stroke of diaphragm 4, components are squeezed out of pumps 38 and 39 through nozzles 46 and 47 and components are sucked in pumps 40 and 41. The dose is changed by means of a nut 30, which, when rotated, changes the distance between 14 and 15, and diaphragms 3 and 4, and therefore the dose of the working fluid poured into the pumps 38 41 changes. The ratio of the components is changed by the displacers 20 and 21, which, when the screws 28 and 29 are rotated, are pushed in or out of the cavities of the cylinders 11 and 12 and change accordingly the volume of liquid in the cylinder cavity. An apparatus for dispensing liquids, containing a hydraulic actuator and metering chambers with partitions and shut-off elements, as well as a control system and diaphragm pumps, characterized in that, in order to improve the accuracy and reliability of metering, the disruption of the chamber is made in the cavity of the additionally piston cylinders, pistons which, via a rod, are connected to the moving walls of the diaphragm chambers, the cylinders being sequentially doubled, each cylinder being connected by a diaphragm pump, movably mounted, renematically connected to the actuator stem and separated

from the adjacent end septum, made in the form of a bypass nozzle.

Sources of information taken into account in the examination

USSR certificate

01 F 11 / 28.30.07.64.

USSR certificate

01 F 11 / 08.30.04.76.

W / -. F