SU929242A1

SU929242A1 - Vibration liquid sprayer

Info

Publication number: SU929242A1
Application number: SU803007327A
Authority: SU
Inventors: Альгимантас Казио Бубулис; Вацловас Пятро Юшка; Казимерас Миколо Рагульскис
Original assignee: Каунасский Политехнический Институт Им.Антанаса Снечкуса
Priority date: 1980-11-21
Filing date: 1980-11-21
Publication date: 1982-05-23

Description

Изобретение относится к вибрационным распыливающим устройствам и может найти применение для записи и проявления изображения, для автоматической связи, в операциях . окраски, отслаивания, разбрызгивания и т.п.The invention relates to vibratory spraying devices and may find application for recording and developing images, for automatic communication, in operations. painting, peeling, spraying, etc.

Известно устройство, содержащее цилиндрический электромеханический преобразователь, верхняя часть которого заканчивается защитной деталью и соприкасается с резонатором, выполненным в виде плоскости кольцеобразной формы, а нижняя часть соприкасается с основной плоскостью и поддерживается в фиксированном положении при помощи центрального стержня [1 }.A device is known that contains a cylindrical electromechanical converter, the upper part of which ends with a protective part and is in contact with a resonator made in the form of a ring-shaped plane, and the lower part is in contact with the main plane and is maintained in a fixed position by a central rod [1}.

Недостатком известного устройства является сложность конструкции и необходимость постороннего устрой * ства для оптимальной подачи жидкости в зону распыления.A disadvantage of the known device is the complexity of the design and the need for an external device * for optimal flow of fluid into the spray zone.

“Наиболее близким к изобретению является вибрационный распылитель ' жидкости содержащий электромеханический преобразователь из пьезокерамического материала, резервуар to сквозным отверстием для подвода жидкости, акустическим концентратором на торце, и систему возбуждения колебаний.“Closest to the invention is a vibratory fluid atomizer comprising an electromechanical transducer made of piezoceramic material, a reservoir to a through hole for supplying liquid, an acoustic concentrator at the end, and an oscillation excitation system.

Кроме того, распылитель содержит фиксирующий стержень, одним концом жестко закрепленный в диске, а другим - установленный в центральном отверстии другого диска ^2}.In addition, the atomizer contains a fixing rod, one end rigidly fixed in the disk, and the other installed in the Central hole of the other disk ^ 2}.

Недостатком этого устройства является сложность конструкции и ограниченные функциональные возможности применения вследствие небольшой зоны распыления.The disadvantage of this device is the design complexity and limited functionality due to the small spray area.

Цель изобретения - упрощение конструкции и расширение технологических возможностей.The purpose of the invention is to simplify the design and expand technological capabilities.

Указанная цель достигается тем, что в вибрационном распылителе жид3 929242 4 кости, содержащем электромеханичес- В лаборатории НИС Вибротехника кий преобразователь из пьёзокерами- КПИсделан макет и проведены экспеческого материала, резервуар со сквозным отверстием для подвода жид-¹кости и акустическим концентратором 5 на торце, и систему возбуждения колебаний, согласно изобретению резервуар выполнен прямоугольным, а акустический концентратор - в виде двух соединенных меньшими торцами упру- 10 гих пластин, большие торцы которых соединены с электромеханическим преобразователем.This goal is achieved by the fact that in the vibrating atomizer liquid 3 929242 4 bones containing an electromechanical transducer made of piezoceramics KPI, a model was made and an experimental material was made, a tank with a through hole for supplying liquid ¹ and an acoustic concentrator 5 at the end, and an oscillation excitation system, according to the invention, the reservoir is made rectangular, and the acoustic hub is in the form of two elastic plates connected by smaller ends, the larger ends of which are connected to lektromehanicheskim converter.

На чертеже изображен вибрационный распылитель жидкости общий вид, 15 в разрезе.The drawing shows a vibrating liquid atomizer General view, 15 in section.

Вибрационный распылитель жидкости содержит электромеханический преобразователь 1 из пьезокерамического материала, прямоугольный резер- 20 вуар 2 со сквозным отверстием 3 для подвода жидкости и акустическим концентратором на торце, выполненным в виде двух соединенных меньшими торцами упругих пластин. 4 и 5, боль* ²⁵шие торцы которых соединены с электромеханическим преобразователем 1.The vibrating liquid atomizer comprises an electromechanical transducer 1 made of piezoceramic material, a rectangular reservoir 20 with a through hole 3 for supplying liquid and an acoustic concentrator at the end face made in the form of two elastic plates connected by smaller ends. 4 and 5, the larger ends * ^{25 of} which are connected to the electromechanical converter 1.

Вибрационный распылитель работает следующим образом.Vibrating atomizer operates as follows.

При подаче высокочастотного ре- 30 зонансного напряжения на электромеханический преобразователь 1, последний начинает вибрировать, передавая колебания упругим пластинам 4 и 5. Вследствие колебаний пластин 4 и 5 35 между ними на месте упругого соединения по длине образуется капиллярная щель 6, куда устремляется находящаяся в резервуаре 2 жидкость. Поскольку колебания от преобразователя 40. 1 сообщаются пластинами 4 и 5, то в их меньших торцах имеет место увеличение амплитуды деформации и звуко* вой энергии, проникновение которой в жидкость, находящуюся между мень- 4$ шими торцами (в щели 6 ) пластин 4 и 5, распыляет и разбрызгивает ее в_ множество мельчайших частиц, создавая туман по всей длине распылителя. Длина распылителя не ограничена.When a high-frequency resonant voltage is applied to the electromechanical transducer 1, the latter starts to vibrate, transmitting vibrations to the elastic plates 4 and 5. Due to the vibrations of the plates 4 and 5 35, a capillary gap 6 is formed between them at the place of the elastic joint along the length, which is located in the reservoir 2 liquid. Since the vibrations from the transducer 40. 1 are communicated by plates 4 and 5, at their smaller ends there is an increase in the amplitude of deformation and sound energy, the penetration of which into the liquid located between the smaller 4 $ ends (in the gap 6) of the plates 4 and 5, sprays and sprays it into a multitude of tiny particles, creating fog along the entire length of the atomizer. Sprayer length is not limited.

рименты, подтвердившие положительный эффект изобретения.Studies confirming the beneficial effect of the invention.

Сделан металлический резервуар длиной 150 мм с отверстием, одна стенка которого собрана из двух пластин акустического концентратора выгнутой формы высотой по 38 мм, толщиной в частях большего и меньшего торцов соответственно 12 и 3 мм. К торцам пластин большего торца прикреплен электромеханический преобразователь длиной 2x12x150 мм марки ЦТС-19, на которые подключалось напряжение 100 В и частотой около 60 кГц.A metal tank 150 mm long with a hole was made, one wall of which was assembled from two plates of an acoustic concentrator with a curved shape 38 mm high, with a thickness of 12 and 3 mm in the parts of the larger and smaller ends, respectively. An electromechanical transducer 2x12x150 mm long of the TsTS-19 grade, to which a voltage of 100 V and a frequency of about 60 kHz was connected, is attached to the ends of the plates of the larger end.

Устройство осуществляет распыление и разбрызгивание жидкости по всей длине щели между концентраторами, т.е. распылителя.The device sprays and sprays the liquid along the entire length of the gap between the concentrators, i.e. spray gun.

Claims

The invention relates to vibratory spraying devices and can be used for recording and displaying images, for automatic communication, in operations. staining, flaking, spraying, etc. A device is known which comprises a cylindrical electromechanical transducer, the upper part of which ends with a protective part and contacts a resonator made in the form of a ring-shaped plane, and the lower part contacts the main plane and is kept in a fixed position by means of a central rod 1. A disadvantage of the known device is the complexity of the design and the need for an extraneous device for optimal supply of liquid to the spray area. Closest to the invention is a vibrating liquid sprayer containing an electromechanical transducer of piezoceramic material, a reservoir to a through hole for supplying a liquid, an acoustic concentrator at the end, and an excitation system. In addition, the dispenser contains a locking rod, rigidly fixed at one end to the disc, and installed at the other in the central hole of another disc. A disadvantage of this device is the design complexity and limited application functionality due to the small spray area. The purpose of the invention is to simplify the design and expand the technological capabilities. This goal is achieved by the fact that in a vibrating liquid sprayer containing an electromechanical transducer of piezoelectric material, a reservoir with a through hole for supplying a liquid and an acoustic concentrator at the end, and an excitation system, according to the invention, the peeviewer is rectangular, and the acoustic concentrator is in the form of two connected by smaller ends of elastic plates, large ends of which are connected to an electromechanical transducer. The drawing shows a vibrating spray liquid general view, in section. The vibrating sprayer of liquids contains an electromechanical transducer 1 of a piezoceramic material, a rectangular tank 2 with a through hole 3 for supplying a liquid and an acoustic concentrator on the end face, made in the form of two elastic plates connected by smaller ends, t and 5 which are connected to an electromechanical transducer 1 Vibrating spray works as follows. When a high-frequency resonant voltage is applied to the electromechanical transducer 1, the latter begins to vibrate, transferring oscillations to the elastic plates A and 5. Due to the oscillations of the plates and 5 between them, a capillary slit 6 forms in the place of the elastic connection along the length tank 2 liquid. Since the oscillations from transducer 1 are communicated by plates j and 5i, in their smaller ends there is an increase in the amplitude of deformation and sound energy, the penetration of which into the fluid between the smaller ends (in slot 6) of plates k and 5 sprays and sprays it into a multitude of tiny particles creating a fog along the entire length of the sprayer. The length of the sprayer is not limited. 9 4 In the laboratory of the NIS Vibrotechnika KPI, a mock-up was made and experiments were conducted that confirmed the positive effect of the invention. A metal tank 150 mm long with an opening was made, one wall of which was assembled from two plates of an acoustic concentrator of a curved form with a height of 38 mm and a thickness of 12 and 3 mm, respectively, in parts of the larger and smaller ends. An electromechanical converter 2x12x150 mm long of PZT-19 brand was attached to the ends of the plates of the larger end, to which a voltage of 100 V and a frequency of about 60 kHz was connected. The device implements spraying and spraying the liquid along the entire length of the gap between the concentrators, i.e. sprayer. The Vibration Fluid Sprayer containing an electromechanical transducer of piezoceramic material, a tank with a through hole for supplying a fluid and an acoustic concentrator at the end, and an oscillation excitation system, in order to simplify the design and expand the technological capabilities of the tank is rectangular acoustic hub - in the form of two elastic plates connected by smaller ends, the large ends of which are connected to electromechanically m converter. Sources of information taken into account in the examination 1. US patent number, class. 239-, published. 197t.

2. USSR author's certificate for application number 2866067 / 23-05, cl. B 05 B 17/06, 07.01.80 (prototype),