TRANSPORT DEVICE WITH AN ULTRASOUND GENERATOR AND OPERATING METHOD

Description

[0001] The invention relates to a transport device equipped with at least one ultrasonic generator, which is intended for the transport of powdery or granular material, and to an operating method for this transport device.

[0002] In manufacturing processes, particularly in the chemical, building materials, pharmaceutical, and food industries, materials to be processed are transported and subjected to processing. Powdered or granular materials are dosed, mixed, or sieved. In all of these processes, the materials and material components are conveyed or transported. These materials are therefore referred to below as process material. In screening devices, the process material, e.g., a solid mixture, is divided into fractions of different grain sizes. The process material is fed to the screen, and the fractions of different grain sizes obtained by screening are carried away. The screening device is therefore a transport device with a special function, namely a screening or separation function.

[0003] In mixing devices, material components are mixed to form a mixture. Components of a process material are added, and the mixture or mixed process material is removed. The mixing device is therefore a transport device with a special function: a mixing function.

[0004] Dosing devices dispense a process material in measured doses. Dosing devices are therefore also transport devices.

[0005] The transport of a process material through a transport device is often associated with difficulties. The process material, which is guided along a partially open or closed transport frame, can potentially stick to the transport frame, form lumps, distribute unevenly, or be conveyed unevenly. The transport frame is made of metal and encloses or holds the process material so that it can be conveyed along or through the transport frame. The transport frame can be, for example, a channel, a pipe, or a container. A functional element, such as a sieve, which is intended for processing the process material, can be held in the transport frame.

[0006] Transport devices of this type often fail to deliver the desired results in terms of efficiency and quality, for example, in screening, mixing, dosing, or filtering. The separation or mixing of material components or the discharge of the process material regularly fails to achieve the desired quality, precision, and / or throughput. Quality can be improved by adding additional process stages in series. Throughput can be increased with larger systems or by connecting several systems in parallel. More precise dosing is achieved with more complex systems.

[0007] It should also be noted that transport devices of this type often require a high level of maintenance. Process material can adhere to the walls of the transport frame or clog the screen lining or a filter, requiring early maintenance or replacement.

[0008] WO2018219840A1 discloses a screening device with a screen in which, to reduce the problems described, vibrations are transmitted via the screen frame or transport frame to the screen lining. For this purpose, an ultrasonic generator is connected to the transport frame by a coupling rod. Ultrasonic waves are transmitted via the transport frame to the screen lining and can set the particles of the process material in motion, ideally preventing it from adhering to the transport frame and screen lining. In practice, improvements in this regard are particularly evident when sufficient ultrasonic power can be transmitted to the transport frame. It should be noted that the output of high power is normally undesirable, as high temperatures can occur in the area where the coupling rod is connected to the transport frame, which can damage the connection point.The effect of the coupled ultrasonic waves therefore essentially unfolds in the area of ​​the connection between the coupling rod and the transport frame, which is why its positioning must be selected accordingly.

[0009] It should also be noted that the connection of the coupling rod to the transport frame can only be performed by appropriately trained personnel. If the connection is not optimal, the results will be unsatisfactory. Furthermore, faulty connections can heat up, resulting in their destruction when coupling higher power levels.

[0010] From JP2003145051A a generic transport device is known which shows the preamble of claim 1.

[0011] The present invention is therefore based on the object of creating an improved transport device with an ultrasonic generator and an operating method for this improved transport device.

[0012] According to the invention, transport devices are to be improved which are suitable for conveying and / or processing a process material and are optionally equipped with one or more functional elements, such as a screen lining or a filter.

[0013] In the transport devices according to the invention, work processes for processing the process material, such as conveying and / or screening and / or filtering, and / or mixing and / or distribution of the process material, are to be improved. In particular, the quality and precision of these work processes are to be improved. More precise separation is to be achieved during screening, better mixing during mixing, and more precise dispensing during dosing.

[0014] The conveying system should be improved to achieve more uniform conveying and, if necessary, more even distribution. Preferably, the transport direction in which the process material is conveyed should be easily changeable. The conveying and discharge of the process material should preferably be possible at selected locations.

[0015] Furthermore, the throughput of the transport device should be improved without enlarging the system or supplying higher power.

[0016] The transport device should also be easy to assemble so that even systems and transport devices already in operation can be further developed according to the invention.

[0017] Furthermore, the transport device should be easy and cost-effective to manufacture.

[0018] Furthermore, the maintenance effort of transport devices according to the invention should be significantly reduced. Material adhesion, which leads to material loss, impairs material quality, and potentially disrupts the operation of the transport device, should be avoided across a wide area and not just in specific areas.

[0019] This object is achieved with a transport device and an operating method having the features specified in claims 1 and 11, respectively. Advantageous embodiments of the invention are specified in further claims.

[0020] The transport device, which is intended for the transport or conveyance of powdered or granular process material, comprises a metal-made, open or self-contained transport frame, which is intended for the transport or conveyance of the process material, which is held by a support device and which is connected to an ultrasonic device, which comprises an ultrasonic generator, an ultrasonic transducer connected to the ultrasonic generator and a coupling rod connected to the ultrasonic transducer, which has a front end piece and a rear end piece.

[0021] According to the invention, a flat distribution body made of metal is provided, which has a top side, a bottom side, a back side and peripherally at least one connection side, that the rear end piece of the coupling rod is connected to the ultrasonic transducer and the front end piece of the coupling rod is welded to the back side, the top side or the bottom side of the preferably plate-shaped distribution body, and that the at least one connection side of the distribution body is integrally connected or welded to the at least one transport frame.

[0022] The transport frame is normally made at least partially of metal so that ultrasonic waves are optimally transmitted from the distribution body to the transport frame. A self-contained transport frame is, for example, a cone or a tube with a round or polygonal cross-section through which the process material is passed. An open transport frame is, for example, a flat or arbitrarily shaped plate or covering on which the process material can be distributed. The self-contained or open transport frame can also have openings or pores and, for example, form a sieve covering so that the process material can not only move along the transport frame but also pass through it. A transport frame can therefore fulfil various functions, such as conveying and / or sieving and / or separating and / or mixing and / or blending or atomising the process material.To implement these functions, the design and / or orientation of the transport frame can be changed in the conveying direction of the process material. For example, the diameter of the openings in the screen lining can be changed in the conveying direction. One or more process materials can be fed into the transport frame at one or more points.

[0023] The distribution body is preferably plate-shaped. The flat distribution body can have any shape in at least one dimension. The distribution body can be aligned in a plane or exhibit any regular or irregular movements or curvatures. The distribution body can thus be a flat plate or a flat geometric body, such as a cylinder or a segment thereof. The distribution body can also have any undulation on the top and / or bottom and / or the front or back.

[0024] Ultrasonic energy, which is introduced into the distribution body at specific points by the coupling rod, is transmitted to the transport frame along an elongated coupling cross-section. The coupling cross-section is, for example, rectangular with a height corresponding to the plate thickness or with a continuous or uninterrupted irregular shape. The transport device according to the invention can thus advantageously act on a process material that is transported over or through the transport frame and, if necessary, processed, e.g., sieved, mixed, impinged with a substance, or its structure altered. The process material is in the form of a powder, granulate, or a granular mixture, for example. By appropriately coupling ultrasonic energy, particles can be separated and conveyed and processed more advantageously.In particular, the targeted coupling of ultrasonic energy can also determine the conveying direction, so that process material is conveyed in one direction or distributed evenly. Instead of connecting the coupling rod directly to the transport frame and coupling the ultrasonic energy directly into the transport frame, the ultrasonic energy is coupled into the transport frame via the distribution body, which offers numerous advantages.

[0025] The at least one coupling rod and the distribution body can be made of the same or different metals, such as iron, steel, copper, aluminum, or titanium. The coupling rod preferably has a round or polygonal cross-section and is inclined with the associated end piece relative to the rear, top, or bottom of the distribution body or oriented perpendicularly thereto. The coupling rod is preferably curved or bent.

[0026] The distribution body is flat or extends along a flat or curved surface, so that it is connected to the transport frame at the front along a strip or the corresponding cross-sectional profile, which preferably has interruptions.

[0027] The distribution body can be a metal plate with a homogeneous cross-section or formed from interconnected elements, such as rod elements. The distribution body can also be a grid plate with rods.

[0028] In preferred embodiments, the distribution body has a waviness, so that the intensity of the coupling of the ultrasonic energy along the connection side of the distribution body into the transport frame runs according to this waviness, which leads to swirling and loosening of the transported particles of the process material.

[0029] The connection side is preferably formed by a generally relatively narrow end face of the plate-shaped coupling body and, if applicable, an adjacent edge, since the end face alone is normally not sufficient for creating the welded connection.

[0030] The distribution body acts as a transformer, transforming and distributing the ultrasonic waves arriving via the coupling rod and coupling them into the transport frame with increased amplitude. The transformation occurs with respect to the difference between the coupling rod, which has a round or polygonal cross-section, and the flat distribution body.

[0031] The connection side of the flat distribution body connects to the transport frame, possibly with gaps or recesses, so that ultrasonic energy is coupled into the transport frame not at a point, but along a strip or cross-section, which depends on the thickness of the distribution body and the width of the weld seam.

[0032] By avoiding point-to-point coupling into the transport frame, point-to-point heating is avoided, which could lead to the destruction of the connection point or weld. This allows more energy to be coupled into the transport frame without fear of damage. The connection point extends over the connection side of the distribution body, which is why heat energy generated at the weld point or weld seam is absorbed by both the transport frame and the transport frame. Even with the coupling of high power, excessive heating, which could damage the connection point, does not occur.

[0033] Therefore, if the coupling rod is connected directly to the transport frame at specific points, which is associated with the disadvantages described above, there is a risk of damage. Welding must therefore be carried out by experienced personnel with the highest quality standards. This problem is avoided with the solution proposed here.

[0034] The coupling rod and the distribution body can be connected to each other in the factory of the ultrasonic device manufacturer using a high-quality joint. However, the connection or welding of the distribution body to the transport frame can be easily performed by non-specialized personnel. A relatively long, possibly interrupted weld seam results along the connection side of the distribution body, ensuring a secure connection between the distribution body and the transport frame. Even if part of the weld seam is not optimally executed, the entire weld seam ensures the desired connection quality. The distribution body connected to the coupling rod can therefore be retrofitted by non-specialized personnel even in previously installed systems or transport frames. Existing systems can therefore be easily retrofitted.

[0035] Particularly advantageous is the use of transport frames that are integrally connected to one or more, optionally plate-shaped, distribution bodies. The transport frames can, for example, be punched out of a single piece of sheet metal together with one or more distribution bodies and then bent. This results in an optimal connection between the plate-shaped distribution bodies and the transport frame. A welded connection between the transport frame and the distribution body is eliminated, which means that the transport device can be manufactured with reduced effort and simultaneously improved properties.

[0036] The transport frame can be connected to any support device in any way. The transport frame can be bolted, welded, or connected to the support device using form-fitting mounting elements.

[0037] Preferably, the transport frame is connected to the support device by one or more non-metallic and / or elastic insulation elements. For example, the transport frame is connected to the support device by screw sets made of plastic. Insulating and / or elastic spacer elements or holding elements made of, for example, plastic or natural rubber can also be provided between the support device and the transport frame. The transport frame can advantageously also be suspended from the support device by means of insulating and, if appropriate, elastic cables. The insulation elements mechanically and / or electrically insulate the transport frame from the support device. Mechanical oscillations, vibrations or coupled ultrasonic oscillations are therefore not absorbed by the support structure.The transport frame therefore forms a vibration system that is only slightly damped and achieves optimal effect with a relatively low energy input.

[0038] Ultrasonic energy can be coupled into a distribution body via one or more coupling rods. Furthermore, several distribution bodies, to which ultrasonic energy can be supplied via one or more coupling rods, can be connected to a transport frame. Ultrasonic energy can therefore be advantageously transmitted to the transport frame as needed. The ultrasonic energy can not only be advantageously distributed throughout the transport frame, but can also be transmitted alternately or with a selected intensity to specific points on the transport frame. The effect of the ultrasonic energy on the transport frame can be significantly determined by the design of the distribution body.

[0039] The transport device can comprise any transport frame used to transport powdered or granular process material. As mentioned, open or closed transport frames can be used.

[0040] A closed transport frame is, for example, a pipe, a ring, a container, a hopper, or a cylinder through which the process material passes. An open transport frame is, for example, a channel along which the process material is conveyed or on which the process material is processed. The channel can be plate-shaped or, for example, have a U-shaped or V-shaped profile suitable for holding the process material. The transport frame is preferably integrated into a process system and adapted to it.

[0041] Appropriate alignment, shape, dimensions, and design of the distribution body result in a corresponding coupling pattern of ultrasonic energy and a corresponding effect on the particles of the process material, which absorb kinetic energy. Various advantageous effects can therefore be achieved by appropriately designing the distribution body and / or supplying ultrasonic energy via one or more coupling rods.

[0042] The distribution body can be designed symmetrically, so that a correspondingly uniform coupling of the ultrasonic energy occurs along the connection side of the distribution body. However, the distribution body can also be designed asymmetrically, resulting in a corresponding coupling of the ultrasonic energy along the connection side of the distribution body. The distribution body, which is preferably designed asymmetrically with respect to an axis running perpendicular to the transport frame, is preferably oriented in one direction or the other, parallel or inclined to the conveying direction of the process material.

[0043] The connection side and the rear side of the distribution body can run parallel to each other or at an angle. By appropriately shaping the rear side of the distribution body or by appropriately asymmetrically designing the distribution body, the coupling along the connection side of the distribution body can be influenced.

[0044] By asymmetrically shaping the distribution body, the particles of the process material can be advantageously influenced in order to set them in motion in one direction or the other.

[0045] The rear side of the distribution body can also have a wave shape relative to the connection side of the distribution body, so that the intensity of the coupled energy runs in a wave shape along the connection side of the distribution body.

[0046] A particularly good coupling into the transport frame occurs when the distribution body is inclined or aligned perpendicular to the transport frame.

[0047] The connection side of the distribution body is preferably aligned parallel or inclined to the conveying direction of the process material. In preferred embodiments, the connection side of the distribution body is straight, so that, for example, maximum effect is achieved in the conveying direction. For example, the distribution body is aligned parallel to the longitudinal axis of the transport frame, e.g., a conveyor channel. In this case, the distribution body typically has a flat surface. It is also possible to implement a wave shape extending along a plane.

[0048] Particularly in tubular or cylindrical transport frames, the connecting side of the distribution body can also run along a curve. For example, at least one distribution body is provided that completely or partially encloses the transport frame as a circular segment, a ring segment, or a spiral.

[0049] According to the invention, the distribution body has coupling fingers separated from one another by gaps on the connection side. The coupling fingers can have the same or different dimensions and cross-sections in size or shape, or in size and shape. Different degrees of coupling can be achieved by designing the coupling fingers. Coupling fingers with a larger cross-section achieve a stronger coupling of ultrasonic energy at the relevant position in the transport frame. With smaller cross-sections, the degree of coupling is reduced accordingly. With round cross-sections, a more circular coupling occurs with a corresponding depth effect, whereas with an elongated cross-section, the ultrasonic energy is coupled over a wider area along the transport frame.

[0050] A distribution body peripherally provided with coupling fingers can also be advantageously used to distribute ultrasonic energy to multiple transport frames. At least one coupling finger of the distribution body is connected or welded to each transport frame.

[0051] A preferably symmetrically designed plate-shaped distributor body can also have several wings, each of which has at least one peripheral connection side. The distributor body has, for example, the shape of a butterfly.

[0052] Furthermore, several distribution bodies, each connected to an ultrasonic generator via at least one coupling rod and an ultrasonic transducer, can be welded to a transport frame. The distribution bodies can be welded to the transport frame at the same or different levels, so that the desired exposure to ultrasonic energy occurs in one level or in a volume section between two levels.

[0053] By applying ultrasonic energy, typically in the frequency range of 25 kHz to 45 kHz, to the transport frame and associated functional elements, such as a screen, the particles of the process material are set in motion, making them easier to convey. Due to the imparted kinetic energy, the particles cannot adhere to the transport frame or the functional elements and become deposited there. Due to the advantageous coupling via the distribution body, the ultrasonic energy can be widely distributed across the transport frame and any existing functional units, preventing the deposition of process material particles not only in specific areas but also over a large area.

[0054] The process material is conveyed through the conveyor frame or on the conveyor frame, for example, by gravity or by a gaseous medium. The effect of ultrasonic energy improves throughput through the conveyor device without increasing the size of the system or requiring higher power. The moving particles of the process material can flow more easily and penetrate functional elements, such as a screen lining, more quickly.

[0055] In preferred embodiments of the invention, the particles of the process material are targeted by the targeted delivery of ultrasonic energy and, if appropriate, by appropriately designed distribution bodies, in order to move them as desired. The particles can be moved in a specific direction to distribute them or release them in a metered manner. Furthermore, particles can be moved to move them in a circular motion and to swirl them.

[0056] The ultrasonic energy is preferably delivered to the transport frame in such a way that particles of the process material are conveyed in a specific direction, e.g. optionally forwards or backwards in opposite directions. The process material can therefore be delivered optionally to different points on the transport frame or a functional unit held thereby. The process material can also be guided along a curve and circulated if necessary. For example, it is possible to convey the process material upwards against the force of gravity along a channel that is inclined by up to 5°, for example. It is possible to use ultrasonic energy to influence different areas of the transport frame and any functional elements integrated therein. The process material can thus be conveyed advantageously, resulting in, for example, a uniform particle flow.

[0057] The conveying of process material particles through the targeted application of ultrasonic energy not only allows for the advantageous conveyance of the process material, but also for improved separation, sieving, or mixing of particles with different properties, such as different sizes, textures, or weights. Furthermore, the filtration of the process material in filter units can be optimized. Furthermore, precise dosing is possible, especially in very small quantities.

[0058] The invention is explained in more detail below with reference to the drawings. In the drawings: Fig. 1 shows a transport device 1 according to the invention with a sieve 2, which has a transport frame 6, which holds a rectangular sieve lining 21, which is connected to an ultrasonic device 8 and articulated to four actuators 31, 32, 33, 34, which are articulated to a support device 10 and by means of which the sieve 2 can be moved within a working volume; Fig. 2a shows a transport device 1 according to the invention in a basic embodiment with an ultrasonic device 8, which has an ultrasonic generator 80, which is connected to a transport frame 6 or a part thereof via an ultrasonic transducer 81, a coupling rod 82 and a distribution body 83; Fig. 2b shows the transport device 1 of Fig. 2a with a transport frame 6 in the form of an upwardly open V-profile, which serves as a conveyor channel; Fig. 2c the transport frame 6 of Fig. 2b welded on both sides with a distribution body 83, which is curved several times and via which ultrasonic energy can be coupled into the transport frame 6 by means of several coupling rods 82; Fig. 2 shows a transport device 1 with the transport frame 6 of Fig. 2b , which is welded on both sides with antiparallel and asymmetrically designed distribution bodies 83A, 83B, via which ultrasonic energy can be selectively coupled into the transport frame 6 under the control of a control unit 100; Fig. 2e a transport device 1 with the transport frame 6 of Fig. 2d , which is integrally connected on both sides to symmetrically formed plate-shaped distribution bodies 83A, 83B, via which ultrasonic energy can be selectively coupled into the transport frame 6 under the control of a control unit 100, and with insulation elements 69, by means of which the transport frame 6 can be connected to a support device 10; Fig. 2f a distribution body 83 connected to a coupling rod 82, which has coupling fingers 831A, 831B separated from one another by gaps 830, which are differently designed; Fig. 2g the distribution body 83 connected to an ultrasonic transducer 18 via the coupling rod 82 of Fig. 2f , which serves to conduct a preferably liquid or gaseous medium M, which is introduced through an opening 820 in the coupling rod 82 or through the ultrasonic transducer 81 into the coupling rod 82 and is delivered via the coupling fingers 831B; Fig. 3 straight distribution bodies 83G, circular segment-shaped distribution bodies 83K and a spiral-shaped distribution body 83S, each of which is welded to a tubular or cylindrical transport frame 6A, 6B, 6C; Fig. 4 a funnel-shaped transport frame 6, to which a distribution body 83 is welded; Fig. 5 a transport device 1 according to the invention with a transport frame 6 in the design of a nozzle for the metered delivery of a process material; Fig. 6 a transport device 1 according to the invention with an annular or cylindrical transport frame 6, into which a functional element ora sieve lining 21 is inserted and which is enclosed by an annular distribution body 83, into which ultrasonic energy can be coupled into the transport frame 6 and the sieve lining 21 via six evenly spaced coupling rods 82A, ..., 82F; Fig. 7 shows a rectangular transport frame 6, into which a functional element or a sieve lining 21 is inserted and which is welded on each side, at different heights, to a distribution body 83A, 83B, 83C, 83D; Fig. 8 shows a transport device 1 according to the invention with a distribution body 83, which is connected to a tubular transport frame 6 via a coupling device 84; Fig. 9a shows a distribution body 83 connected by coupling fingers 831 to four cylindrical transport frames 6a, 6B, 6C, 6D, into which cylindrical filter units 7 are inserted; Fig. 9b shows the distribution body 83 of . Fig. 9a with one of the transport frames 6B; Fig. 10a a distribution body 83 with two connection sides 836, each of which is connected to two cylindrical transport frames 6a, 6B; 6C, 6D, each of which is made in one piece from a sheet metal; Fig. 10b the distribution body 83 of Fig. 10a , which has the shape of a butterfly with two wings, on each of which a peripheral connection side 836 is provided; and Fig. 11 a transport device 1 according to the invention with a screen 2 and a transport frame 6 according to Fig. 2e , which is suspended from a support device 10 by rope-shaped insulation elements 69.

[0059] Fig. 1 shows a transport device 1 according to the invention in a preferred embodiment with a screen 2, which comprises a transport frame 6 that holds a rectangular screen lining 21 and is connected by joints 312, 322, 332, 342 to a piston rod of four actuators 31, 32, 33, 34, which are connected by joints 311, 321, 331, 341 to a support device 10. The support device 10 comprises four columns connected to the actuators 31, 32, 33, 34, which are interconnected by cross struts.

[0060] The actuators 31, 32, 33, 34 are part of a drive device 3, which additionally comprises media lines 313, 323, 333, 343, via which, for example, electrical energy or a hydraulic or pneumatic medium can be transmitted from a source 30 to the actuators 31, 32, 33, 34.

[0061] The transport frame 6 is also connected to an ultrasonic device 8, which has an ultrasonic generator 80 that transmits ultrasonic energy to the transport frame 6 via an ultrasonic transducer 81, a coupling rod 82, and a distribution body 83. The ultrasonic generator 80 generates electrical alternating voltage signals in the ultrasonic range of, for example, 25 kHz to 45 kHz. The alternating voltage signals are fed in the ultrasonic transducer 81, for example, to piezo elements that are firmly connected to the coupling rod 82, for example, by a coupling rod. The electrical alternating voltage signals are converted into mechanical vibrations by the piezo elements and transmitted to the transport frame 6 via the coupling rod 82 and the distribution body 83.

[0062] The transport frame 6 is rectangular and arranged such that the process material P can pass through it. The transport frame 2 holds a functional element, namely the screen lining 21. The screen lining 21 is preferably made of metal and mechanically connected, preferably welded, to the transport frame 6. Ultrasonic energy transmitted to the transport frame 6 can therefore penetrate the screen lining 21 and act on the process material P there.

[0063] The dimensions and functions of the transport frame 6 are selected according to the function of the transport device 1, which can be, for example, a feeding device, a screening device, a mixing device, or a dosing device. All of these devices comprise a correspondingly designed transport frame 6, through which the process material is guided, or on which the process material is stored and / or conveyed. In the embodiment of Fig. 1 The transport frame 6 encloses a cross-section through which the process material P is guided. However, the transport frame 6 can also limit the transport path only on one or more sides, as is the case, for example, in the Figuren 2a and 2b is shown. Furthermore, the transport frame 6 can have a minimum length, which is required, for example, for holding the functional element, e.g., the screen lining 21. Alternatively, the transport frame 6 can extend over greater distances, e.g., several meters, as shown in Fig. 3 is shown.

[0064] It is essential that the ultrasonic energy can act on the process material P via the transport frame 6 and optionally at least one functional element in order to set it in motion and in particular to prevent deposition on the transport frame 6 and on the optional functional elements.

[0065] The process material P is a powdery or granular material, such as a powder or granules. The particles of the powder or granules can be of the same or different composition. The process material P can have one or more components. For example, a process material P consisting of several components is supplied, divided into components, and / or dispensed in a metered manner. Multiple components of a process material P can also be supplied separately and mixed and / or dispensed in a metered manner. The particles of the process material P can have any chemical or pharmaceutical composition.

[0066] For individual control of the individual actuators 31, 32, 33, 34, the drive device 3 is connected via communication lines, in particular control lines 101, to a control unit 100, which contains a control computer with an operating program. Furthermore, the ultrasonic generator 80 can be controlled via a control line 108. Preferably, the ultrasonic generator 80 is designed and controllable such that ultrasonic signals with selected frequencies within the ultrasonic spectrum of, for example, 25 kHz to 45 kHz can be selectively emitted. The frequency should be capable of being keyed or continuously changed if necessary, so that standing waves are avoided. Furthermore, the ultrasonic energy should be capable of being emitted selectively at intervals.

[0067] Furthermore, measurement signals 511, 521 from sensors 51, 52 as well as status signals 109 from a feed device 9 (shown schematically by a downward-pointing arrow) from which the process material P reaches the screen lining 21 can be fed to the control unit 100. The sensors 51 and 52 are optical sensors, e.g., imaging sensors, by means of which the distribution of the process material P that has reached the screen lining 21 is monitored.

[0068] Controlled by the control unit 100, the screen 2 can be subjected to virtually any desired movement within a working volume by means of the actuators 31, 32, 33, 34, e.g., linear drives with a piston rod. The screen 2 can be displaced at least along its transport axis x and / or its transverse axis y and / or rotated about a rotation axis z, preferably perpendicular to these axes x, y.

[0069] The actuators 31, 32, 33, 34 are preferably connected to the transport frame 6 and the support device 10 by ball joints 312, 322, 332, 342; 311, 321, 331, 341, which allow the actuators 31, 32, 33, 34 to rotate in any direction without restriction to the required extent. Therefore, when the piston rod of one of the actuators 31, 32, 33, 34 is extended, the other actuators 31, 32, 33, 34 can rotate freely as well.

[0070] Coarse distribution is achieved by the actuators 31, 32, 33, and 34. This coarse distribution is supported by the supply of ultrasonic energy, and fine distribution is complemented by it. The action of the ultrasonic energy essentially creates an air cushion through which the process material P can be distributed without resistance. The process material P is decoupled from the transport frame 6 and the functional element or screen lining 21 and cannot adhere to them. Therefore, no deposits are formed, which would require maintenance. However, particles of a corresponding size can quickly pass through the screen lining 21 under the action of the ultrasonic energy.

[0071] Transport devices 1 according to the invention can thus, as shown in Fig. 1 shown, optionally include any mechanical drives and are not limited to the supply of ultrasonic energy alone. However, in many cases, the supply of ultrasonic energy according to the invention alone is sufficient to realize the advantages of the invention.

[0072] By coupling via the coupling rod 82 and the distribution body 83, which is welded to the transport frame 6, the ultrasonic energy is coupled into the transport frame 6 not at a specific point but along the connection side of the distribution body 83. Problems that arise with conventional point-based coupling of ultrasonic energy are avoided. Even with the coupling of high power levels, no damage to the connection point occurs. As described above, the distribution body 83, which is supplied with the already welded coupling rod 82, can be easily welded to the transport frame 6. The distribution body 83 acts as a transformer and couples ultrasonic waves with increased amplitude into the transport frame.

[0073] The distribution body 83 can be welded to a transport frame 6, such as a pipe, duct, container, or the like, by non-specialized personnel, even in systems already installed and in operation. Localized high temperatures are avoided. Instead, the heat energy is preferably absorbed over the entire length of the transport frame 6 and the distribution body 83.

[0074] Fig. 2a shows a transport device 1 according to the invention in a basic embodiment with an ultrasonic device 8, which comprises an ultrasonic generator 80, which is connected to a transport frame 6 or a part thereof via an ultrasonic transducer 81, a coupling rod 82, and a distribution body 83. The coupling rod 82 is bent and, with its front end piece 821, stands perpendicular to the distribution body 83, preferably a metal plate, and is welded to it. The upper side 83U of the distribution body 83 in this case forms a coupling side or the transition piece 83B, to which the coupling rod 82 is welded. The coupling rod 82 can, however, also be connected to the underside 83L or to a rear side 83L of the distribution body 83, if this is wide enough.

[0075] The rear end piece 822 of the coupling rod 82 is connected to the ultrasonic converter 81, which comprises, for example, a coupling rod coupled to piezoelectric elements. Electrodes are arranged between the piezoelectric elements, to which an alternating voltage signal is applied.

[0076] The distribution body 83 is symmetrically designed and has a connection side 836, a top side 83U, and a bottom side 83L. The connection side 836 comprises seven coupling fingers separated from one another by U-shaped recesses 830. The coupling fingers 831 are welded to the transport frame 6. The transport frame 6 is symbolically shown as a plate and can be configured as desired to receive and dispense a process material P. The transport frame 6 can, for example, be an at least approximately horizontally oriented plate onto which the process material P is placed in order to mix, separate, and / or dispense it in a metered manner.

[0077] These processes are supported by the targeted supply of ultrasonic energy. For this purpose, a control unit 100 with a control program tp is provided, by means of which control signals 108 are transmitted to the ultrasonic generator 80 in order to emit ultrasonic signals with the desired frequency and amplitude, optionally a sequence of ultrasonic signals, or a mixture of ultrasonic signals. As mentioned, the ultrasonic signals introduced into the distribution body 83 are amplified and transmitted with increased amplitude via the connection side of the distribution body 83 to the transport frame 6. The arrangement of coupling fingers 831 and recesses 830 located therebetween makes it possible to act non-uniformly on the process material P and to move and swirl it practically over the entire length of the transport frame 6.

[0078] Fig. 2b shows the transport device 1 of Fig. 2a with a transport frame 6 serving as a channel in the form of an upwardly open V-profile. The transport frame 6 is preferably aligned horizontally or slightly inclined. Under the influence of ultrasound over a wide area, the process material P can move along the transport frame 6 as if on an air cushion. The transport frame 6 can thus form a transport channel that can extend in any desired direction.

[0079] Fig. 2c shows the transport frame 6 of Fig. 2b with a multiply bent distribution body 83. The distribution body 83, provided with four curved edges, is connected at both ends by connecting sides 836 to the transport frame 6 or to one side 61, 62 of the channel formed by the transport frame 6. On both sides, the distribution body 83 is welded to two coupling rods 82, via which high-power ultrasonic energy can be coupled into the transport frame 6.

[0080] Fig. 2d shows the transport frame 6 of Fig. 2b in the form of a channel welded on both sides with antiparallel and asymmetrically formed distribution bodies 83A, 83B. Ultrasonic energy of any frequency and amplitude can be coupled into the transport frame 6 via the two distribution bodies 83A, 83B, each of which is connected to an ultrasonic generator 80 via a coupling rod 82 and an ultrasonic converter 81, controlled by a control unit 100, either via one distribution body 83A or the other distribution body 83B, or jointly via both distribution bodies 83A, 83B.

[0081] Due to the asymmetrical design and anti-parallel alignment of the distribution bodies 83A, 83B, ultrasonic energy with corresponding gradients can be coupled into the transport frame 6. Accordingly, the particles of the process material P are set in motion differently and begin to move in one direction or the other depending on the type of coupling. If the coupling occurs anti-parallel via both distribution bodies 83A, 83B, the process material P is swirled and conveyed according to the inclination of the transport frame 6. However, movement in one direction or the other is also possible if ultrasonic energy with different power is coupled via the distribution bodies 83A, 83B. In this case, movement and swirling can occur simultaneously. For example, the transport device 1 serves as a mixing device.

[0082] For example, the process material P can be delivered first in direction A and then in direction B. By varying the type and timing of the ultrasonic energy input, a controlled delivery of the process material P in one direction or the other is possible. The material flow can be started and stopped again. The intensity of the input can be used to control the strength of the material flow.

[0083] Fig. 2e shows the transport frame 6 of Fig. 2d , which is integrally connected on both sides to symmetrically designed plate-shaped distribution bodies 83A, 83B. The transport frame 6 was, for example, cut or punched from a single piece of sheet metal and bent into the present shape. The distribution bodies 83A, 83B allow the optimal coupling of ultrasonic energy via several coupling fingers. The distribution bodies 83A, 83B can also have an asymmetric shape with any orientation, so that all functions described for other embodiments of the invention can also be implemented. Conversely, the transport frames 6 of all further embodiments of the invention can also be integrally connected to the optionally plate-shaped distribution body 83.

[0084] The coupling of ultrasonic energy into the transport frame 6 is preferably carried out as in Fig. 2d described.

[0085] By way of example, it is shown that the transport frame 6 optionally comprises a first and a second screen lining S1, S2, which are implemented by openings or bores of different diameters. A mixing zone is optionally provided between the two screen linings S1, S2, within which a further process material Px can be fed. A process material P can therefore be conveyed, screened or separated into portions, mixed or mixed with additional further process material Px or impinged upon, screened again or separated and discharged. The supplied process material P thus results in separated process material portions P1 and P2 and a process material portion P3, which is discharged at the end of the transport frame 6. By means of appropriately designed transport frames 6, numerous functions can therefore be implemented individually or in combination with one another.

[0086] The transport frame 6 is connected by mounting elements 691 to four rope-shaped insulation elements 69, by means of which the transport frame 6 can be connected to a support device 10. The transport frame 6 of Fig. 2d For example, in the transport device 1 of Fig. 11 be used.

[0087] Fig. 2f shows a distribution body 83 connected to a coupling rod 82, which has coupling fingers 831A, 831B separated from one another by gaps 830 and of different configurations. In this way, any desired pattern of ultrasonic energy coupling can be generated, which is suitable for the process at hand, e.g., a mixing process, a separation process, or a conveying process.

[0088] Fig. 2f further shows that the coupling rod 82 can also be welded to the back 83R of the distribution body 83.

[0089] Furthermore, it can be seen that the connection side 800 of the distribution body 83 is several times larger than the diameter of the coupling rod 82. This ratio can be in any range of, for example, 5 - 50 or more, in particular 10-25.

[0090] The coupling rod 82 and the transport frame 83 can be solidly constructed with closed cross-sections. Alternatively, the coupling rod 82 and / or the distribution body 83 can also be provided with at least one through-channel or distribution channel 800. Several distribution channels 800 can be provided, which are connected to one another or run separately from one another. Fig. 2f An optional through-channel or distribution channel 800 is shown, which runs through a part of the coupling rod 82 and through a part of the distribution body 83 up to a coupling finger 831B. A metal connection pipe 8200 is connected to a connection opening 820, through which a liquid or gaseous medium M is introduced. Coupling rods 82 and / or distribution bodies 83 and / or transport frames 6 according to the invention can therefore be provided with individual channels or with a channel system through which the transport frame 6 itself or the transported process material P is acted upon. Fig. 2f shows, by way of example, a transport frame 6 with a distribution channel 600 of any shape, to which the medium M is supplied from the distribution body 83. This medium M runs within the transport frame 6 to an outlet opening and is optionally supplied to the process material P. The distribution channel 600 running within the transport frame 6 can also have multiple outlet openings, for example, to mix or swirl a process material P with a liquid or a solid. A gaseous medium can therefore carry a powdery substance that is mixed into the process material P.

[0091] Fig. 2g shows the distribution body 83 of FIG. 1 connected to an ultrasonic transducer 18 via the coupling rod 82. Fig. 2f , which serves to conduct a preferably liquid or gaseous medium M and is for this purpose completely or partially tubular or provided with distribution channels 800. The medium M, for example air, gas or a liquid, can in the embodiment shown, if provided, optionally be introduced into the coupling rod 82 through the ultrasonic transducer 18 and / or, if provided, optionally through an opening 820 in the coupling rod 82 and can be guided through distribution channels 800 of the distribution body 83 to an outlet on one or more of the coupling fingers 831B.

[0092] Distribution bodies 83 according to the invention in preferred embodiments therefore comprise one or more distribution channels 800 through which at least one medium M can be transferred to and / or into the transport frame 6. For example, a liquid medium can be supplied to the transport frame 6 through a first distribution channel 800 in order to cool it. A second medium M, a gas or a liquid, can be introduced into the transport frame 6, for example, in order to mechanically or chemically influence the conveyed process material P. The process material P can, for example, be swirled, impacted, or mixed by the supplied medium M.

[0093] Fig. 2g shows that the medium M is introduced into the coupling rod 82 through an opening 820 in the coupling rod 82 or through the ultrasonic transducer 81 and is discharged via the coupling fingers 831B. One of the distribution channels 800 is shown in dash-dotted lines.

[0094] The ultrasonic transducer 81 comprises ring-shaped piezo elements 811, which are mounted on a mounting shaft 812 and clamped between flange elements 813, 814. The flange element 813 is, for example, a screw nut that is screwed onto the mounting shaft 812. Contact disks 8111 and / or insulation disks 8112 are provided between the piezo elements 811. By applying alternating voltages, preferably in the ultrasonic range, to the piezo elements 811, they are excited to mechanical vibrations. Ultrasonic vibrations are therefore transmitted from the ultrasonic transducer 81 via the coupling rod 82 and the distribution body 83 to the transport frame 6. The mounting shaft 812 is provided with a transfer channel 8120, which runs axially through the mounting shaft 812 and thus the ultrasonic transducer 81. A medium M can therefore be applied to the inlet of the transfer channel 8120 and guided to the inlet of the tubular coupling rod 82.

[0095] In a preferred embodiment, a first medium M could therefore be guided through the ultrasonic transducer 81 to a first coupling finger 831B and a second medium M could be guided through the opening 820 in the coupling rod 82 to a second coupling finger 831B.

[0096] Distribution channels 800 can also be advantageously implemented in plate-shaped distribution bodies 83. For example, two complementary metal plates having channel structures are connected to one another in such a way that the distribution channels 800 are enclosed therebetween and, for example, connected to an access channel that adjoins a through-channel of the coupling rod 82.

[0097] Fig. 3 shows straight distribution bodies 83G welded to a first tubular transport frame 6A, circular segment-shaped distribution bodies 83K welded at different heights to a second tubular transport frame 6B, and a spiral-shaped distribution body 83S welded to a third tubular transport frame 6C. The spiral-shaped distribution body 83S is connected to a plurality of coupling rods 82 and allows ultrasonic energy to be coupled into the third tubular transport frame 6C over its entire length and circumference. Tubular transport frames 6 can be connected as desired, for example, to straight distribution bodies 83G and / or circular segment-shaped distribution bodies 83K and / or spiral-shaped distribution bodies 83S.

[0098] Fig. 4 shows a transport device 1 with a funnel-shaped transport frame 6 to which a distribution body 83 is welded.

[0099] Fig. 5 shows a transport device 1 according to the invention with a tubular transport frame 6, to which a slightly upwardly inclined nozzle 69 is connected. Under the influence of ultrasonic energy, the process material P can be dispensed in a metered manner through the nozzle 69. Kinetic energy is imparted to the process material P, so that it can easily migrate upward and exit from the nozzle 69. A dashed line shows that the distribution body 83 can be designed symmetrically or asymmetrically.

[0100] Fig. 6 shows a transport device 1 according to the invention with an annular or cylindrical transport frame 6, into which a functional element, i.e., a screen lining 21, is inserted. The transport frame 6 is enclosed by an annular distribution body 83, into which ultrasonic energy can be coupled into the transport frame 6 and the screen lining 21 via six evenly spaced coupling rods 82A, ..., 82F. The control unit 100 outputs corresponding control signals 108A, 108B, 108C, 108D, 108E, 108F to the ultrasonic generator 80, so that ultrasonic energy with any desired gradient can be impressed into the transport frame 6 and the screen lining 21. Any desired constant or arbitrarily changing and moving energy patterns can be impressed into the screen lining 21 via the coupling rods 82A, ..., 82F.

[0101] According to these energy gradients and energy patterns, the process material P migrates and circulates on the screen lining 21 in any selectable direction. The movement of the process material P can be monitored by optical sensors 51, 52 and fed back to the control unit 100, so that the control unit 100 can move and shift the process material P according to its program tp.

[0102] The injection of ultrasonic energy along gradients is therefore possible not only by asymmetrical design of the distribution bodies 83, but also by appropriate coupling of ultrasonic energy via the coupling rods 82A, ..., 82F.

[0103] Fig. 7 shows a rectangular transport frame 6, into which a functional element or a screen 21 is inserted and which is welded on each side, at different heights, to a distribution body 83A, 83B, 83C, 83D. The longer distribution bodies 83A and 83C are each welded to two coupling rods 82. The two shorter distribution bodies 83B and 83D are each welded to only one coupling rod 82.

[0104] Fig. 8 shows a transport device 1 according to the invention with a distribution body 83, which is connected to a tubular transport frame 6 via a coupling device 84. The distribution body 83 couples ultrasonic energy into a coupling rod 841, from which ultrasonic energy can be distributed to several transport frames 6. Shown is a tubular transport frame 6, which is connected to a connecting rod 843, to which ultrasonic energy can be supplied from the coupling rod 841 via transfer rods 842.

[0105] Through one or more transfer rods 842, ultrasonic energy can be guided from the coupling rod 841 to several connecting rods 843 or directly to several transport frames 6. The dimensions and cross-sections of the transfer rods 842 allow the energy flow of the ultrasonic energy to be adjusted as needed.

[0106] Fig. 9a shows a distribution body 83 connected by coupling fingers 831 to four cylindrical transport frames 6a, 6B, 6C, 6D, into which cylindrical filter units 7 are inserted. Ultrasonic energy can thus be transmitted to various transport frames 6 through the coupling fingers 831, which form the connection side 836 of the distribution body 83. One of the filters 7 is partially withdrawn. In two of the transport frames 6a, 6B, the filters 7 are not yet inserted. The device is arranged, for example, within a container 60.

[0107] This embodiment of the invention also shows the advantages of the distribution body 83, which allows ultrasonic energy to be transformed and advantageously distributed.

[0108] Fig. 9b shows the distribution body 83 of Fig. 9a with one of the transport frames 6B.

[0109] Fig. 10a shows a distribution body 83 with two connection sides 836, each of which is connected to two cylindrical transport frames 6a, 6B; 6C, 6D, each made in one piece from a sheet metal. The sheet metal can be pre-machined, e.g., provided with openings, and then bent to obtain a desired cross-section, e.g., round, rectangular, triangular, or polygonal. A connecting piece remains between the two transport frames 6a, 6B; 6C, 6D, to which the distribution body 83 can be welded.

[0110] Fig. 10b shows the distribution body 83 of Fig. 10a , which has the shape of a butterfly with two wings, each of which has a peripheral connection side 836. The distribution body 83 can also have additional wings, which preferably enclose the same angle to each other.

[0111] The coupling rod 82 is welded to a transition piece 838 between the two wings and runs with its end piece perpendicular to the front or rear of the plate-shaped distribution body 83. The end piece of the coupling rod 82 connected to the ultrasonic transducer 81 runs axially parallel in the middle between the cylindrical transport frames 6a, 6B; 6C, 6D. With this arrangement, the transport device 1 can be inserted axially into a pipe or into a container 60 (see Fig. 9a ). The coupling device 1 can therefore be adapted to any receptacle.

[0112] Fig. 11 shows a transport device 1 according to the invention with a transport frame 6 according to Fig. 2e , which is suspended from a support device 10 by the four rope-shaped insulation elements 69. The transport frame 6 is suspended and insulated from the support device 10, thus forming a barely damped vibration system, via which the process material, which is fed by a feed device 9, can be optimally transported or conveyed.

[0113] By preferably individually controlling the ultrasonic transducers 81 via signals 188, the conveying process on the transport frame 6 can be controlled, and the process material P can be dispensed in precisely measured amounts. Due to the one-piece connection of the optionally plate-shaped distribution bodies 83 to the transport frame 6 and the suspended installation of the transport frame 6, which forms a vibration system, the desired treatment of the process material P is achieved even with a low energy input. By appropriate control, the process material P can be specifically influenced in order to convey it in a measured amount and, if necessary, to mix it thoroughly.

[0114] The feed device 9, arranged above the transport frame 6, comprises an inlet channel 91 and an outlet channel 93, both shown in section, which enclose a sieve 2 located therebetween. The sieve 2 consists of a perforated plate connected to an ultrasonic transducer 81 by a curved coupling rod 82. A rotor 95, driven by a motor 96, is rotatably mounted within the inlet channel 91. This rotor preprocesses the process material P and / or feeds it to the sieve 2.

Claims

1. Transport device (1) for the transport of pulverous or granular process material (P) with an open or in itself closed transport frame (6) made of metal, which is provided for the transport of the process material (P), which is held by a support device (10) and which is connected to an ultrasonic device (8) that comprises an ultrasonic generator (80), an ultrasonic transducer (81) connected to the ultrasonic generator (80) and a coupling rod (82), which is connected to the ultrasonic transducer (81) and which is having a front-sided end piece (821) and a rear-sided end piece (822), and wherein a flat distributor body (83) made of metal is provided, which has an upper side (83U), a lower side (83L), a rear side (83R) and peripherally at least one connection side (836), wherein the rear-sided end piece (822) of the coupling rod (82) is connected to the ultrasonic transducer (81) characterised in that the front-sided end piece (821) of the coupling rod (82) is welded to the rear side (83R), the upper side (83U) or the lower side (83L) of the distributor body (83), that the at least one connection side (836) of the distributor body (83) is integrally connected with or welded to the at least one transport frame (6) and that the distributor body (83) has coupling fingers (831) at the connection side (836) which are separated from one another by intermediate spaces (830) which coupling fingers (831) have identical or different cross sections.

2. Transport device (1) according to claim 1, characterised in that the transport frame (6) is a tube, a ring, a container, a funnel, a cylinder, a channel or a plate and that the distributor body (83) is symmetrically formed or that the distributor body (83) is symmetrically or asymmetrically formed as a metal plate or grid plate.

3. Transport device (1) according to claim 1 or 2, characterised in that the transport frame (6) comprises or holds at least one functional element (21, 7), such as a screen lining (21) or a filter (7) serving for processing the process material (P).

4. Transport device (1) according to one of the claims 1 - 3, characterised in that the connection side (836) of the distributor body (83) adjoins the transport frame (6) and that the distributor body (83) is formed symmetrical or asymmetrical with respect to an axis running perpendicular to the transport frame (6) and is aligned in one or the other direction parallel or inclined to the conveying direction of the process material (P).

5. Transport device (1) according to one of the claims 1 - 4, characterised in that the distributor body (83) is connected to a plurality of transport frames (6A, 6B), wherein at least a first coupling finger (831) of the distributor body (83) is welded to a first transport frame (6A) and a second coupling finger (831) is welded to a second transport frame (6B).

6. Transport device (1) according to one of the claims 1 - 5, characterised in that the distributor body (83) has one or more distribution channels (800) into which at least one medium (M) can be introduced directly or through the ultrasonic transducer (81) and from which the medium (M) can be delivered to the transport frame (6) or to the process material (P) carried in the transport frame (6); or that the distributor body (83) and the transport frame (6) have one or more distribution channels (800; 600) into which at least one medium (M) can be introduced directly or through the ultrasonic transducer (81) and from which the medium (M) can be discharged via one or more outlet openings to the transport frame (6) or to the process material (P) carried in the transport frame (6).

7. Transport device (1) according to one of the claims 1 - 6, characterised in that the transport frame (6) is connected to the support device (10) by one or more non-metallic or elastic or non-metallic and elastic insulation elements (69).

8. Transport device (1) according to one of the claims 1 - 7, characterised in that two cylindrical transport frames (6A, 6b; 6C, 6D) are integrally formed from a metal sheet, which metal sheet is welded between the two transport frames (6A, 6b; 6C, 6D) to one of the connection sides (836) of the distributor body (83).

9. Transport device (1) according to one of the claims 1 - 8, characterised in several distribution bodies (83), which are each connected to an ultrasonic generator (80) via at least one coupling rod (81) and an ultrasonic transducer (81), are welded to the transport frame (6) in the same plane or in different planes, or that a distribution body (83), which is connected to an ultrasonic generator (80) via at least one coupling rod (81) and an ultrasonic transducer (81), at least partially encloses the transport frame (6) as a segment of a circle, segment of a ring or spiral.

10. Transport device (1) according to one of the claims 1 - 9, characterised in that the distributor body (83) is connected to the transport frame (6) via a coupling device (84), which coupling device (84) comprises a coupling bar (841), which is welded to the distributor body (83) and which is connected by at least one transfer bar (842) to at least one connection bar (843) welded to the associated transport frame (6).

11. Operating method for controlling the transport device (1) for the transport of pulverous or granular process material (P) according to one of the claims 1 - 10, with a transport frame (6) made of metal, which is held by a support device (10) and which is connected via at least one distributor body (83) and at least one coupling rod (82) and an ultrasonic transducer (81) to an ultrasonic generator (80), and with a control unit (100) which has a control program (tp) and from which control signals (108A, 108B) are output to the ultrasonic generator (80) in order to control the transport operation.

12. Operating method according to claim 11, characterised in that the ultrasonic generator (80) is controlled in such a way that ultrasonic energy is supplied to each of two asymmetrically formed distribution bodies (83A, 83B), which are aligned antiparallel, in order to transport the process material (P) in a first or a second direction.

13. Operating method according to claim 11 or 12, characterised in that the ultrasonic generator (80) is controlled in such a way that ultrasonic energy is supplied at least via one of a plurality of coupling rods (82A, ..., 82F) and via at least one distributor body (83) to the transport frame (6), which is provided with a screen lining (21) in such a way, that the process material (P) supported on the screen lining (21) is moved or circulated in one direction.

14. Operating method according to claim 11, 12 or 13, characterised in that the ultrasonic generator (80) is controlled in such a way that ultrasonic energy is supplied via at least one coupling rod (82) to the transport frame (6) in such a way that process material (P) stored or conveyed in the transport frame (6) is dispensed in a desired dosage.