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The article shows the results of theoretical and experimental studies of the process of centrifugal trapping particulate matter using the developed two-stage gas cleaning equipment. Design features of the proposed and created equipment based on an agglomeration with ultrasonic disc radiators, acting as a first stage of trapping are described. The second step is the capture device with a counter-swirling...
The article presents the results of experimental studies aimed at the determination of conditions and modes of action by high-intensity ultrasonic vibrations for the acceleration of drying process of the textile materials at high-speed flow of drying agent. To carry out studies it was developed special purpose stand with the radiator of ultrasonic vibrations, which is able to generate vibrations with...
The optimum modes of ultrasonic influence at an intensification of extraction of useful substances from plant raw materials are considered. It is shown that at extraction of such substances as arbutin and rutin it is required low-intensive short ultrasonic influence which doesn't destroy molecular communications; while the others, such, as bitulin, on the contrary, it is requires high-intensity long...
The article shows the ways to improve the ultrasonic emitter designed for ash collecting units Efficiency increase in thermoelectric plants by the increasing of ultrasonic influence intensity through the increasing of the piezotransducers power. The work carried out allowed to increase electric power from 180 W to 330 W, while increasing the intensity of ultrasonic radiation of each emitter was 3–5...
The article is devoted to theoretical researching of process of two-stage high-disperse atomization of liquids including the process of primary formation of large drops at ultrasonic (US) action on thin film of liquid and further disintegration of drops under action of high-frequency ultrasonic field in air-drop medium. It was found the physical principle and it was offered the mathematical model...
The technology of ultrasonic dimensional processing of brittle and hard materials, particularly disc manufacturing of various diameter made of cermet plates of dissimilar thickness, is considered.
The paper presents the development and determination of demands to the experimental setup for research of the effectiveness of ultrasonic intensification of gas component absorption by liquid. The theoretical studies of absorption kinetics carried out for the determination of requirements to the setup. Determinated requirements based on the theoretical results for the geometrical dimensions of technological...
The article presents the results of development of stand for weld quality control, forming by ultrasonic welding. Proposed, developed and realized stand allowed to carry out the control of the process of forming of weld at ultrasonic welding. Results of controlling are allowed to study the process visually and to set the welding modes providing the maximum weld quality.
The article is devoted to investigation of the influence of secondary vibration modes in the uniformity of the working ring disk mode ultrasonic radiators. In the first part the article refers to application of ultrasonic vibrations for various processes intensification. Further article considers methods, allowing reduce quantity secondary mode in investigated frequency range, which can render influence...
The article presents the results of the studies aimed at the development of the apparatus for multi-spot ultrasonic welding of the articles made of thermoplastic materials, which is able to provide simultaneous formation of four non-detachable joints. The performance of four joints in the form of rivets allows considerably accelerating welding at the production and increasing quality of end item.
Results of development of the semi-automatic line of connecting of a polymeric film to a rigid polymeric cap with simultaneous cutting down by means of ultrasonic welding are presented in the article. As a result of the experimental studies the polymeric materials for production of a product are chosen, the way of automation of process of its manufacture is offered and realized. The automated line...
The separation of gas mixtures both existing in nature and generating as a result of any chemical reaction is one of the necessary stages of the production of oxidizers, inert or combustion gases, which are applied in industry, technic, medicine and in autonomous life support systems. The article proposes the method of efficiency increase of gas separation based on the use of ultrasonic action for...
The article is devoted to the creation of ultrasonic equipment for researching of erosion resistance of various materials to cavitation. Results of research of functional properties of created ultrasonic device are provided.
The article is devoted to the integration of control system of cavitation mode into the ultrasonic technological equipment intended for the action on liquid technological media. It shows the results of studies of operating efficiency of the ultrasonic equipment with the control system.
The article is devoted to the studies of ultrasonic cavitation action on the process of parts cleaning from burrs in out-of-the-way-places with the application of different media including abrasive suspensions and chemically active media.
The article presents the results of studies aimed at the definition of acoustic energy value introduced into gas medium by ultrasonic apparatuses with the disk radiators measuring consumed electric power of the ultrasonic devices at different levels of gas medium static pressure in a closed volume. It is shown, that developed procedure allows obtaining real values of radiated acoustic power as opposed...
The article is devoted to the realization of contact method of measuring of amplitude of mechanical vibrations of ultrasonic frequency. Results of developing of piezoelectric receiving transducer for measuring of amplitude of vibration of working instrument of ultrasonic vibration system.
The article considers the problems of the development and the application of the technological volumes used as a part of the ultrasonic technological apparatuses at the intensification of the technological processes in a running mode. Proposed approaches to the design and application of the technological volumes allow developing the ultrasonic apparatuses with necessary parameters of ultrasonic action...
The article is devoted to the development of high-efficient equipment for catching of high-dispersed particles (10 micron and less) from gas flow due to combined action of inertia forces and acoustic vibrations of ultrasonic frequency on the particles. Designed equipment is the two-step construction, the first step of which is the agglomerator with the ultrasonic disk radiators. The second step of...
This paper proposes a new approach to improve the efficiency of coagulation of dispersed particles in liquid. The approach is based on the ultrasonic treatment as a sequence of wave packets (ultrasonic pulses) of finite duration that is less than cycle period. The impact of ultrasonic pulses reduces the maximum cavitation nuclei radius achieved during direct diffusion of dissolved gas into the cavitation...
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