SU660710A1

SU660710A1 - Useful mineral flushing and purifying apparatus

Info

Publication number: SU660710A1
Application number: SU772447487A
Authority: SU
Inventors: Валерий Сергеевич Ямщиков; Валерий Иосифович Рехтман; Виктор Андреевич Белозеров; Альберт Семенович Шагинян; Алексей Георгиевич Асан-Джалалов; Анатолий Алексеевич Певнев
Original assignee: Специальное Конструкторское Бюро Сейсмической Техники Министерства Нефтяной Промышленности Ссср
Priority date: 1977-01-28
Filing date: 1977-01-28
Publication date: 1979-05-05

Description

Устройство относитс к обогашению полезных ископаемых и может быть использовано дл очистки деталей механизмов горнорудной , нефт ной и других отраслей промышленности .The device relates to the mineral processing and can be used to clean the parts of the mechanisms of mining, petroleum and other industries.

Известны устройства дл очистки изделий в кавитационном поле моюшей жидкости , состо щей из камеры и источника ультразвуковых колебаний, в качестве которых примен ютс преобразователи из пьезокерамики или магнитострикторы 1.Devices are known for cleaning products in a cavitation field of a washing liquid, consisting of a chamber and a source of ultrasonic vibrations, which are used as piezoelectric transducers or magnetostrictors 1.

Основным недостатком этих устройств вл етс небольша эффективность очистки, особенно крупногабаритных изделий и кавитационностойких загр знений.The main disadvantage of these devices is the low cleaning efficiency, especially of large-sized products and cavitation-resistant contaminants.

Наиболее близким по технической сущности к предлагаемому изобретению вл етс устройство, дл промывки и очистки полезных ископаемых, включающее корпус с рабочей камерой и поршень с приводом 2.The closest to the technical essence of the present invention is a device for washing and cleaning minerals, including a housing with a working chamber and a piston with a drive 2.

Это устройство не позвол ет получить кавитацию по всему объему камеры. Возникающа кавитаци на поршне приводит к его разрущению .This device does not allow cavitation over the entire volume of the chamber. The occurrence of cavitation on the piston leads to its destruction.

Цель изобретени - повышение эффективности процесса промывки путем создани стабильной кавитации.The purpose of the invention is to increase the efficiency of the washing process by creating a stable cavitation.

Цель достигаетс тем, что рабоча камера устройства разделена на поршневую и штоковую полости, которые сообщены с помощью канала, выполненного в теле корпуса, при этом на корпусе установлен пневмогидравлический аккумул тор, сообщенный с каналом .The goal is achieved by the fact that the working chamber of the device is divided into piston and rod cavities, which are communicated by means of a channel made in the body of the case, while a pneumohydraulic accumulator connected to the channel is mounted on the case.

На чертеже изображено устройство дл промывки и очистки полезных ископаемых.The drawing shows a device for washing and cleaning minerals.

Устройство состоит из корпуса 1, в котором находитс несимметричный поршень 2, раздел ющий цилиндр на две полости щтоковую 3 и поршневую 4, которые вследствие несимметричности поршн 2 имеют разные эффективные сечени . Поршень 2 св зан с возбудителем низкочастотных колебаний 5.The device consists of a housing 1, in which there is an asymmetrical piston 2, which divides the cylinder into two cavities 3 and piston 4, which, due to the asymmetry of piston 2, have different effective sections. Piston 2 is associated with a low frequency oscillator 5.

Корпус 1 имеет канал 6, соедин ющий полости 3 и 4. В канале 6 со стороны штоковой полости 3 подключен пневмогидравлический аккумул тор 7.Case 1 has a channel 6 connecting cavities 3 and 4. In channel 6, from the side of the rod cavity 3, a pneumohydraulic accumulator 7 is connected.

Устройство работает следующим образомThe device works as follows

В канал 6 помещают полезные ископаемые , подлежащие очистке, камеру герметично закрывают крышкой 8 и включают возбудитель низкочастотных колебаний 5.The minerals to be cleaned are placed in the channel 6, the chamber is hermetically sealed with a lid 8 and the low-frequency oscillator 5 is turned on.

Claims

When Porsch 2 moves towards the side with a smaller effective area, the liquid is displaced from cavity 3 into cavity 4 through channel 6. Since the effective cross section area of piston 2 from cavity 3 is smaller than from cavity 4, less liquid is supplied from cavity 3 than absorbed by cavity 4. Therefore, the liquid is exerted by the force of stretching, which leads to the formation and growth of cavitation bubbles under the action of the acceleration of fluid particles and tensile forces. When piston 2 moves towards greater effective area, fluid is displaced from cavity 4 into cavity 3 through channel 6. With displacement of fluid 2, the volume of cavity 3 increases by a smaller amount than decreases the volume of cavity 4, as a result, the difference in volume increases the static pressure . Thus, in channel 6, the working fluid flows from cavity 4 into cavity 3 with a simultaneous increase in static pressure. Under the action of elevated pressures, part of the cavitation bubbles collapse and others divide, which ensures effective cleaning. To regulate the maximum values of static pressure of compression and expansion of liquids in the cavitation chamber on the side of the smaller effective area of the piston 2, the pneumohydraulic accumulator 7 is turned on. When the static pressure rises above the charge pressure of the accumulator 7, it absorbs some liquid the system. At the same time, oscillations of the fluid in channel 6 are activated and by changing the charging pressure of the accumulator 7, the maximum static pressure of the cycle can be changed. The advantages of the proposed device are that cavitation in a large volume of liquid and high power can be obtained, since there are practically no restrictions on the increase in the power transmitted by the liquid. This makes it possible to increase the efficiency of cleaning minerals and processing large-sized parts. Apparatus for washing and cleaning minerals, including a housing with a working chamber and a drive with a drive, characterized in that, in order to increase the efficiency of the washing process by creating a stable cavitation, the working chamber is divided into piston and rod cavities, which are communicated through the channel , made in the body of the case, while on the case there is a pneumohydroaccumulator connected to the channel. Sources of information taken into account in the examination 1. Physical foundations of ultrasonic technology. M., “Science, 1970, p. 454.

2. Introduction to fluid dynamics. M., “Peace, 1973, p. 597-599.