Conveying device with ultrasonic generator and method of operation

Abstract

The conveying device (1), which functions to convey powdery or granular process material (P), comprises a metal open or self-closed conveying frame (6), which is provided for conveying the process material (P), and which is held by a support device (10) and connected to an ultrasonic device (8), which comprises an ultrasonic generator (80), a vibrator (81) connected to the ultrasonic generator (80), and a connecting rod (82) connected to the ultrasonic vibrator (81) and having a front end piece (821) and a rear end piece (822). According to the present invention, a flat metal distributor body (83) is provided, the distributor body (83) having an upper surface (83U), a lower surface (83L), a rear surface (83R), and at least one connecting surface (836) around it, the rear end piece (822) of the connecting rod (82) is connected to the ultrasonic vibrator (81), the front end piece (821) of the connecting rod (82) is welded to the rear surface (83R), the upper surface (83U), or the lower surface (83L) of the distributor body (83), and at least one connecting surface (836) of the distributor body (83) is integrally connected or welded to at least one conveying frame (6).

Description

[Technical Field]

[0001] The present invention relates to a conveying device designed for conveying powdery or granular material, comprising at least one ultrasonic generator, and to a method for operating said conveying device. [Background technology]

[0002] In manufacturing processes (especially in the chemical, building materials, pharmaceutical and food industries), the materials to be processed are conveyed and subjected to processing. Powdered or granular materials are dosed, mixed or sieved. In all these processes, materials and material components are conveyed or transported. These materials are therefore referred to below as process materials.

[0003] In a separator, the process material (e.g., a mixture of solids) is divided into fractions of different particle sizes. The process material is sieved and the fractions of different particle sizes obtained by sieving are conveyed away. Thus, a separator is a conveying device with a special function (i.e., a sorting or separating function).

[0004] In a mixing device, material components are mixed to form a mixed material. The process material components are fed into the mixing device, and the mixed material or mixed process material is delivered out. Therefore, a mixing device is a conveying device with a special function (i.e., mixing function).

[0005] In a dosing device, the process material is dispensed in doses and is therefore also a delivery device.

[0006] The transport of process material through a transport device is often difficult. Process material transported along a transport frame that partially opens and closes can adhere to the transport frame, form clumps, or be unevenly distributed or transported. The transport frame is made of metal and encloses or holds the process material so that it can be transported along or through the transport frame. The transport frame can be, for example, a channel, a tube, or a container. The transport frame can hold functional elements (e.g., sieves) intended to process the process material.

[0007] This type of conveying device may not produce the desired results in terms of efficiency and quality, for example, when sorting, mixing, dosing, or filtering. The separation or mixing of material components or the delivery of process materials does not always occur with the desired quality, precision, and / or productivity. Quality can be improved by adding further process steps in the series. Productivity can be increased by larger systems or by connecting several systems in parallel. More complex systems achieve more precise dosing.

[0008] It should also be noted that this type of conveying equipment often requires a high level of maintenance: process material can adhere to the walls of the conveying frame or clog the sieve linings or filters, so this type of conveying equipment will need to be repaired or replaced at an early stage.

[0009] To mitigate the problems described above, Patent Document 1 describes a screening device with a sieve in which vibrations are transmitted to the sieve lining via the sieve frame or conveyor frame. To this end, an ultrasonic generator is connected to the conveyor frame by a connecting rod. The ultrasonic waves reach the sieve lining via the conveyor frame, displacing the process material particles and ideally avoiding adhesion to the conveyor frame or sieve lining. In practice, this can be improved, especially if sufficient ultrasonic power can be transmitted to the conveyor frame. It should be noted that high power transmission is usually undesirable, as high temperatures can be generated in the connection area between the connecting rod and the conveyor frame, potentially damaging the connection. Therefore, the effect of the coupled ultrasonic waves is primarily felt in the connection area between the connecting rod and the conveyor frame, and its placement must be appropriately selected.

[0010] It should also be noted that the connection of the tie rods to the carrier frame should only be performed by properly trained personnel. If the connection is not optimal, satisfactory results will not be achieved. Furthermore, a poor connection may heat up and be destroyed when high power is applied. [Prior art documents] [Patent documents]

[0011] [Patent Document 1] International Publication No. 2018 / 219840 Summary of the Invention [Problem to be solved by the invention]

[0012] The present invention is therefore based on the object of providing an improved transport device with an ultrasonic generator and a method for operating this improved transport device. [Means for solving the problem]

[0013] According to the invention, a conveying device is to be improved which is suitable for transporting and / or processing process materials and, if necessary, is provided for this purpose with one or more functional elements such as sieve linings or filters.

[0014] The conveying device of the present invention should improve work processes for handling process materials, such as conveying and / or sorting and / or filtering and / or mixing and / or dispensing the process materials. In particular, the quality and accuracy of these processes should be improved. In the case of sorting, more accurate separation should be achieved, in the case of mixing, better mixing should be achieved, and in the case of dosing, more accurate delivery of amounts should be achieved.

[0015] Conveyance should be improved to achieve more uniform conveyance, and if necessary, more uniform distribution. Preferably, the conveying direction in which the process material is conveyed can be easily changed. Preferably, it should be possible to convey and deliver the process material at selected locations.

[0016] Additionally, the transport device can increase throughput without adding bulk or power to the system.

[0017] The transport apparatus may also be easy to assemble, so that systems and transport apparatus already in operation may be further modified in accordance with the present invention.

[0018] Additionally, the transport device can be easy and inexpensive to manufacture.

[0019] Furthermore, the maintenance work of the conveying device of the present invention can be significantly reduced: adhesion of material, which may lead to material loss, impair the quality of the material and disrupt the operation of the conveying device, needs to be avoided not only in specific locations but over a wide area.

[0020] This problem is solved by a conveying device and an operating method, which have the features defined respectively in claims 1 and 12. Advantageous embodiments of the invention are defined in the further claims.

[0021] A conveying device for conveying powdery or granular process materials includes a metallic open or closed conveying frame, the conveying frame being provided for conveying the process material, the conveying frame being supported by a support device and connected to an ultrasonic device, the ultrasonic device including an ultrasonic generator, a vibrator connected to the ultrasonic generator, and a connecting rod connected to the ultrasonic vibrator and having a front end piece and a rear end piece. According to the present invention, a flat metallic distributor body is provided, the distributor body having at least one connecting surface on its upper, lower, rear, and periphery, the rear end piece of the connecting rod being connected to the ultrasonic vibrator, the front end piece of the connecting rod being welded to the rear, upper, or lower surface of the distributor body, and at least one connecting surface of the distributor body being integrally connected or welded to at least one conveying frame.

[0022] The conveying frame is typically made at least partially of metal to optimize the transmission of ultrasonic waves from the distributor body to the conveying frame. A closed conveying frame is, for example, a cone or a tube, e.g., with a circular or polygonal cross section, through which the process material passes. An open conveying frame is, for example, a flat or arbitrarily shaped plate or a cover through which the process material can be dispensed. Closed or open conveying frames can also have openings or pores, e.g., a sieve coating that allows the process material to pass through the frame as well as move along it. Thus, the conveying frame can perform various functions, such as transporting, sorting, separating, mixing, and / or dusting the process material. To achieve these functions, the design and / or orientation of the conveying frame can be altered in the direction of conveyance of the process material. For example, the diameter of the sieve openings can vary in the conveying direction. One or several process materials can be fed into the conveying frame at one or more locations.

[0023] The distributor body is preferably plate-shaped. A flat distributor body can have any shape in at least one dimension. The distributor body can be aligned in a plane or have any regular or irregular curvature or shape. Thus, the distributor body can be a flat plate or a flat geometric body (e.g., a cylinder or a segment thereof). The distributor body can also have any undulations on the upper and / or lower and / or front or rear surfaces.

[0024] The distributor body transmits ultrasonic energy introduced into the distributor body by the connecting rods to the conveying frame along the elongated connecting cross section. The connecting cross section may be, for example, a rectangle with a height corresponding to the panel thickness, or a rectangle with a continuous or uninterrupted irregular course. Thus, the conveying device of the present invention can advantageously act on process material being conveyed across or through the conveying frame and optionally processed (e.g., sieved, mixed, interacted with, or have its structure changed). The process material may be, for example, a powder or granules, or a granular mixture. By appropriately coupling ultrasonic energy, particles can be separated and conveyed and processed more advantageously. In particular, the conveying direction can be determined by selectively coupling ultrasonic energy so that the process material is conveyed in one direction or evenly distributed. Instead of directly connecting the connecting rods to the conveying frame and coupling ultrasonic energy directly to the conveying frame, ultrasonic energy can be coupled to the conveying frame via the distributor body, which has many advantages.

[0025] At least one of the connecting rods and the distributor body can be made of the same or different metals, such as iron, steel, copper, aluminum, or titanium. The connecting rod preferably has a circular or polygonal cross section and is inclined or perpendicular to the rear, upper, or lower surface of the distributor body with its associated end piece. The connecting rod is preferably curved or bent.

[0026] The distributor body is flat or extends along a flat or curved surface so that it is connected at the front to the transport frame along a strip or a corresponding cross-sectional course (preferably with interruptions).

[0027] The distributor body can be a metal plate with a uniform cross section or can be made of interconnected elements such as bar elements. The distributor body can also be a grid plate with bars.

[0028] In a preferred embodiment, the distributor body has undulations so that the intensity of the coupling of ultrasonic energy to the conveying frame along the connecting surface of the distributor body follows this undulation, leading to disturbance and loosening of the conveyed particles of the process material.

[0029] The connecting surface is preferably formed by the usually relatively narrow front surface of the plate-like combination and, if necessary, a boundary edge, since the front surface alone is usually insufficient to form a welded connection.

[0030] The distributor body acts as a transducer, converting the ultrasonic waves coming through the coupling rod, distributing them, increasing their amplitude and coupling them to the carrier frame. The conversion is performed by the difference between the coupling rod with a circular or polygonal cross section and the flat distributor body.

[0031] The connecting surface of the flat distributor body is connected to the carrier frame, optionally using a gap or recess, so that the ultrasonic energy is coupled into the carrier frame not at a single point, but along a strip or cross section depending on the thickness of the distributor body and the width of the weld seam.

[0032] By avoiding point-like connections to the carrier frame, spot heating, which could lead to the destruction of the connection or weld, is avoided. Therefore, more energy can be coupled to the carrier frame without fear of damage. Because the connection points extend across the entire connection surface of the distributor body, the heat energy generated by the weld or weld seam is absorbed by the carrier frame on the one hand and by the carrier frame on the other. Even when high power is coupled, there is no excessive heating that could damage the connection area.

[0033] If the connecting rods were directly connected to the carrier frame at points, this would have the drawbacks mentioned above and would therefore pose a risk of breakage. Therefore, the welding must be performed by skilled workers with the highest quality. This problem is avoided with the solution of the present invention.

[0034] The connecting rod and distributor body are already connected to each other with a high-quality connection at the ultrasonic equipment manufacturer's factory. Meanwhile, the connection or welding of the distributor body to the carrier frame can be performed without any problems, even by non-specialists. A relatively long, possibly interrupted, weld seam forms along the connecting surface of the distributor body, ensuring a reliable connection between the distributor body and the carrier frame. Even if parts of the weld seam are not optimally executed, the entire weld seam ensures the desired connection quality. Therefore, distributor bodies connected to connecting rods can be retrofitted to already installed systems or carrier frames by personnel without specialized knowledge. This allows for simple retrofitting of existing systems.

[0035] Particularly advantageous is the use of a carrier frame integrally connected to one or more distributor bodies, which may be plate-shaped. The carrier frame can be punched out of sheet metal together with the distributor body or bodies and then bent. This ensures an optimal connection between the plate-shaped distributor body and the carrier frame. Since no welding is required between the carrier frame and the distributor body, the manufacturing effort for the carrier device is reduced and its performance is improved.

[0036] The transport frame can be connected to any supporting device in any way: the transport frame can be screwed, welded or securely connected to the supporting device by mounting elements.

[0037] Preferably, the transport frame is connected to the support device by one or more non-metallic and / or elastic insulating elements. For example, the transport frame is connected to the support device by plastic screw fasteners. Insulating and / or elastic spacers or retaining elements, made of plastic or natural rubber, can also be provided between the support device and the transport frame. The transport frame can also be suspended from the support device by insulating and possibly elastic ropes. The insulating elements mechanically and / or electrically insulate the transport frame from the support device. Therefore, mechanical vibrations, vibrations, or coupled ultrasonic vibrations are not absorbed by the support structure. The transport frame therefore forms a slightly damped vibration system, achieving optimal effectiveness with relatively little energy input.

[0038] Ultrasonic energy can be coupled to the distributor body via one or more coupling rods. Furthermore, several distributor bodies, each capable of supplying ultrasonic energy via one or more coupling rods, can be connected to the carrier frame. Thus, ultrasonic energy can be advantageously transmitted to the carrier frame as needed. Ultrasonic energy can be advantageously distributed throughout the entire carrier frame, or it can be transmitted alternately or at selected intensities to specific areas of the carrier frame. The influence of ultrasonic energy on the carrier frame can essentially be determined by the design of the distributor body.

[0039] The conveying device can have any conveying frame that is useful for conveying powdery or granular process material. As previously mentioned, open or closed conveying frames can be used.

[0040] Closed transport frames are, for example, pipes, rings, containers, funnels, or cylinders through which the process material passes. Open transport frames are, for example, channels through which the process material is transported or through which the process material is processed. The channels can be plate-like or have, for example, a U- or V-shaped profile suitable for holding the process material. The transport frames are preferably integrated into and adapted to the process plant.

[0041] Proper alignment, shaping, dimensioning, and design of the distributor body results in a corresponding course of coupling of ultrasonic energy and a corresponding effect on the process material particles absorbing kinetic energy. Thus, by proper design of the distributor body and / or delivery of ultrasonic energy through one or more coupling rods, various beneficial effects can be achieved.

[0042] The distributor body can be designed symmetrically so that a corresponding uniform coupling of ultrasonic energy occurs along the connecting surface of the distributor body. Alternatively, the distributor body can be designed asymmetrically so that a corresponding course of coupling of ultrasonic energy occurs along the connecting surface of the distributor body. The distributor body, which is preferably asymmetric with respect to an axis extending perpendicular to the conveying frame, is preferably aligned in one or the other direction, parallel or inclined to the conveying direction of the process material.

[0043] The connecting surface and the rear surface of the distributor body can run parallel or at an angle to each other. The coupling along the connecting surface of the distributor body can be influenced by a corresponding course of the rear surface of the distributor body or by a corresponding asymmetric design of the distributor body.

[0044] By shaping the distributor body asymmetrically, it is possible to act on the particles of the process material to move them in one direction or another.

[0045] The rear surface of the distributor body may also have a wavy shape relative to the connecting surface of the distributor body such that the intensity of the coupling energy undulates along the connecting surface of the distributor body.

[0046] A particularly good coupling to the transport frame is achieved if the distributor body is inclined or perpendicular to the transport frame.

[0047] The connecting surface of the distributor body is preferably aligned parallel or inclined to the conveying direction of the process material. In a preferred embodiment, the connecting surface of the distributor body extends straight, for example, so that the maximum effect in the conveying direction is achieved. For example, the distributor body is aligned parallel to the longitudinal axis of the conveying frame (e.g., the conveying channel). In this case, the distributor body usually has a flat surface. It is also possible to realize a corrugation extending along a plane.

[0048] In particular with tubular or cylindrical transport frames, the connecting surfaces of the distributor bodies can also extend along curves, for example at least one distributor body is provided which completely or partially surrounds the transport frame as a circular segment, a ring segment or a spiral.

[0049] In a preferred embodiment, the distributor body has coupling fingers separated from each other by gaps at the connection surface. The coupling fingers can have the same or different dimensions and cross-sections in terms of size or shape. Various degrees of coupling can be achieved depending on the design of the coupling fingers. By coupling fingers with larger cross-sectional areas, stronger coupling of ultrasonic energy into the transport frame at each location is achieved. As the cross-section becomes smaller, the degree of coupling decreases accordingly. With a circular cross-section, there is a more circular coupling with a corresponding depth effect, while with an elongated cross-section, the coupling of ultrasonic energy occurs over a wider area along the transport frame.

[0050] A distributor body provided with connecting fingers around its periphery can also be advantageously used to distribute ultrasonic energy to several carrier frames, with at least one connecting finger of the distributor body being connected or welded to each of the carrier frames.

[0051] The preferably symmetrical plate-shaped distributor body can also have several wings, each of which has at least one connecting surface around its periphery, for example the distributor body has the shape of a butterfly wing.

[0052] Additionally, several distributor bodies, each connected to the ultrasonic generator via at least one connecting rod and one ultrasonic transducer, can be welded to the carrier frame in the same or different planes so that the desired effect of the ultrasonic energy occurs in one plane or in a volume section between two planes.

[0053] Applying ultrasonic energy, typically in the frequency range of 25 kHz to 45 kHz, to the conveying frame and associated functional elements (such as sieve linings) sets process material particles in motion, making them easier to transport. The applied kinetic energy prevents particles from adhering to the conveying frame or functional elements and causing them to accumulate there. Due to advantageous coupling by the distributor body, the ultrasonic energy has a widely distributed effect on the conveying frame and any functional units present, not just at specific points but over a wide area. This prevents process material particles from accumulating.

[0054] The process material is transported through or on the conveying frame, for example by gravity or a gaseous medium. The ultrasonic energy increases the throughput through the conveying device without enlarging the plant or adding more power. Once in motion, the process material particles flow more easily and can penetrate functional elements such as sieve linings more quickly.

[0055] In preferred embodiments of the present invention, by specific emission of ultrasonic energy and correspondingly designed dispenser bodies as needed, process material particles are acted upon in a targeted manner and moved as desired. Particles can be moved in specific directions to dispense or release particles in a controlled manner. Furthermore, particles can be moved to move in circles or swirl.

[0056] Ultrasonic energy is preferably delivered to the transport frame so that the process material particles are transported in a specific direction (e.g., optionally in the opposite direction, forward or backward). Thus, the process material can be selectively delivered to different locations on the transport frame or on the functional units held together with the transport frame. The process material can also be guided along a curve or circulated as needed. For example, it is possible to transport the process material upward along a channel inclined up to 5° against gravity. In this way, ultrasonic energy can be used to act on various areas of the transport frame and any functional elements integrated therein. Thus, the process material is transported in an advantageous manner, resulting in, for example, a uniform particle flow.

[0057] The transport of process material particles by targeted delivery of ultrasonic energy not only allows for advantageous transport of the process material, but also allows for improved separation, sieving or mixing of particles with different properties, such as different sizes, different compositions or different weights. Furthermore, the filtration of the process material in filter units can be optimized. Furthermore, precise dosing, especially of minute amounts, is possible.

[0058] The present invention will now be described in more detail with reference to the drawings. [Brief explanation of the drawings]

[0059] [Figure 1]Shown is a conveying device 1 of the present invention comprising a sieve 2 comprising a conveying frame 6 holding a rectangular sieve lining 21 connected to an ultrasonic device 8 and hinged to four actuators 31, 32, 33, 34 hinged to a support device 10, by means of which the sieve 2 can be moved within the working volume. [Figure 2a] The transport device 1 of the present invention is shown in a main embodiment comprising an ultrasonic device 8 having an ultrasonic generator 80 connected to the transport frame 6 or part thereof via an ultrasonic transducer 81, a connecting rod 82 and a distributor body 83. [Figure 2b] The conveying device 1 is shown in FIG. 2a with a conveying frame 6 in the form of an upwardly open V-profile which serves as a conveyor channel. [Figure 2c] 2b shows a conveying frame 6 welded to a distributor body 83 on both sides, the distributor body 83 being curved several times, allowing ultrasonic energy to be coupled to the conveying frame 6 by several coupling rods 82 via the distributor body 83. [Figure 2d] 2b shows a transport device 1 with a transport frame 6 welded on both sides to distributor bodies 83A, 83B, which are aligned anti-parallel to each other and are asymmetric in design, and through which ultrasonic energy can be selectively coupled to the transport frame 6 under the control of a control unit 100. [Figure 2e] 2d shows a conveying device 1 with a conveying frame 6 integrally connected on both sides to symmetrically formed plate-like distributor bodies 83A, 83B, via which ultrasonic energy can be selectively coupled to the conveying frame 6 under the control of a control unit 100, and an insulating element 69 by means of which the conveying frame 6 can be connected to a support device 10. [Figure 2f]1 shows a distributor body 83 connected to a connecting rod 82 and having connecting fingers 831A, 831B separated from each other by an intermediate space 830 and of different configurations. [Figure 2g] 2f shows a distributor body 83 connected to an ultrasonic transducer 18 via a coupling rod 82 and preferably serving to pass a liquid or gaseous medium M, the liquid or gaseous medium M being introduced into the coupling rod 82 through an opening 820 in the coupling rod 82 or through the ultrasonic transducer 81 and being discharged via coupling fingers 831B. [Figure 3] Shown are a straight distributor body 83G, a circular segment distributor body 83K and a spiral distributor body 83S welded to a tubular or cylindrical carrier frame 6A, 6B, 6C, respectively. [Figure 4] 1 shows a funnel-shaped conveying frame 6 with a distributor body 83 welded thereto. [Figure 5] 1 shows a conveying device 1 according to the invention having a conveying frame 6 in the form of a nozzle for the metered delivery of process material. [Figure 6] 1 shows a conveying device 1 of the invention with an annular or cylindrical conveying frame 6, in which a functional element or sieve lining 21 is inserted and which is surrounded by an annular distributor body 83 which can couple ultrasonic energy to the conveying frame 6 and the sieve lining 21 via six connecting rods 82A, ..., 82F which are equally spaced from one another. [Figure 7] Shown is a rectangular conveying frame 6 into which functional elements or sieve linings 21 are inserted and which are welded to the distributor bodies 83A, 83B, 83C, 83D at different heights on each side. [Figure 8] 1 shows a conveying device 1 according to the invention having a distributor body 83 connected to a tubular conveying frame 6 via a coupling device 84. [Figure 9a] 1 shows a distributor body 83 connected by interlocking fingers 831 to four cylindrical transport frames 6a, 6B, 6C, 6D into which cylindrical filter units 7 are inserted. [Figure 9b] The distributor body 83 of Figure 9a is shown with one of the carrier frames 6B. [Figure 10a] Shown is a distributor body 83 with two connection surfaces 836, each of which is connected to two cylindrical transport frames 6a, 6B; 6C, 6D, each made integrally from a metal sheet. [Figure 10b] Figure 10a shows a distributor body 83 having the shape of a butterfly with two wings, each of which is provided with a connecting surface 836 around its periphery. [Figure 11] 2e shows a conveying device 1 according to the invention with a sieve 2 and a conveying frame 6 according to FIG. 2e, suspended from a support device 10 by means of a rope-like insulating element 69. DETAILED DESCRIPTION OF THE INVENTION

[0060] 1 shows a conveying device 1 of the invention in a preferred embodiment comprising a sieve 2, which comprises a conveying frame 6, which holds a rectangular sieve lining 21 and is connected by joints 312, 322, 332, 342 respectively to the piston rods 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 struts connected to the actuators 31, 32, 33, 34, which are connected to each other by cross struts.

[0061] The actuators 31, 32, 33, 34 are part of a drive device 3, which further comprises medium lines 313, 323, 333, 343, via which, for example, electrical energy or hydraulic or pneumatic medium can be transmitted from a source 30 to the actuators 31, 32, 33, 34.

[0062] The carrier frame 6 is also connected to an ultrasonic device 8 comprising an ultrasonic generator 80 that transmits ultrasonic energy to the carrier frame 6 via an ultrasonic transducer 81, a connecting rod 82, and a distributor body 83. The ultrasonic generator 80 generates an electrical AC voltage signal in the ultrasonic range, for example, 25 kHz to 45 kHz. The AC voltage signal is supplied to, for example, a piezoelectric element within the ultrasonic transducer 81, which is firmly connected to the connecting rod 82 by, for example, a connecting bar. The electrical AC voltage signal is converted by the piezoelectric element into mechanical vibrations and transmitted to the carrier frame 6 via the connecting rod 82 and the distributor body 83.

[0063] The conveying frame 6 is rectangular and is arranged so that the process material P can pass through it. The conveying frame 2 holds a functional element (i.e., a sieve lining 21). The sieve lining 21 is preferably made of metal and is mechanically connected to the conveying frame 6, preferably welded. Thus, ultrasonic energy transmitted to the conveying frame 6 can penetrate the sieve lining 21 and act on the process material P there.

[0064] 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 sorting device, a mixing device, or a dosing device. All of these devices have a correspondingly designed transport frame 6 through which the process material P is guided or through which the process material P is stored and / or transported. In the embodiment of FIG. 1, the transport frame 6 surrounds the cross section through which the process material P is guided. However, the transport frame 6 can also limit the transport path to only one or more sides, as shown, for example, in FIGS. 2a and 2b. Furthermore, the transport frame 6 can have a minimum length, for example, required to hold functional elements (e.g., sieve lining 21). Alternatively, the transport frame 6 can extend over a longer distance (e.g., several meters), as shown in FIG. 3.

[0065] In order to move the transport frame 6 and in particular to prevent deposition on the transport frame 6 and the optional functional elements, it is essential that ultrasonic energy can act on the process material P via the transport frame 6 and, if necessary, at least one functional element.

[0066] The process material P is a powdered 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 can be supplied in separate components and / or dispensed in a certain dosage. Multiple components of the process material P can also be supplied separately, mixed, and / or dispensed in a certain dosage. The particles of the process material P can have any chemical or pharmaceutical composition.

[0067] To individually control the individual actuators 31, 32, 33, 34, the drive device 3 is connected to a control unit 100 via communication lines (in particular, a control line 101), which is provided with a control computer with an operating program. The ultrasonic generator 80 can also be controlled via a control line 108. Preferably, the ultrasonic generator 80 is designed and controllable to selectively emit ultrasonic signals having selected frequencies within the ultrasonic spectrum, for example, between 25 kHz and 45 kHz. Optionally, the frequency can be swept or continuously changed to avoid standing waves. Furthermore, ultrasonic energy can be selectively emitted at intervals.

[0068] The control unit 100 can also provide measurement signals 511, 521 from the sensors 51, 52 as well as a status signal 109 from the feeder 9 (schematically indicated by a downward arrow) through which the process material P reaches the sieve lining 21. The sensors 51 and 52 are optical sensors (e.g., image sensors) by which the distribution of the process material P reaching the sieve lining 21 is monitored.

[0069] Controlled by the control unit 100, the sieve 2 can undergo almost any movement within the working volume by means of actuators 31, 32, 33, 34 (e.g. linear drives with piston rods). The sieve 2 can be displaced at least along its conveying axis x and / or its transverse axis y and / or can rotate about a rotation axis z, which is preferably perpendicular to these axes x, y.

[0070] The actuators 31, 32, 33, 34 are preferably connected to the carrier 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 unrestrictedly in any direction to the required extent. Thus, when the piston rod of one of the actuators 31, 32, 33, 34 is extended, the other actuators 31, 32, 33, 34 can rotate as required.

[0071] Actuators 31, 32, 33, and 34 perform coarse distribution. This is assisted by the application of ultrasonic energy, which then produces a finer distribution. The ultrasonic energy creates an air cushion through which the process material P is distributed without resistance. The process material P is separated from the transport frame 6 and the functional elements or sieve lining 21 and cannot adhere to them. This prevents accumulations that would otherwise require additional maintenance. Meanwhile, particles of a corresponding size can pass through the sieve lining 21 quickly under the influence of the ultrasonic energy.

[0072] Thus, the transport device 1 of the present invention may optionally include any mechanical drive device and is not limited to providing only ultrasonic energy, as shown in Figure 1. However, in many cases, the provision of ultrasonic energy alone of the present invention will be sufficient to realize the benefits of the present invention.

[0073] By coupling ultrasonic energy through the connecting rod 82 and distributor body 83 welded to the carrier frame 6, the ultrasonic energy is coupled to the carrier frame 6 along the connection surface of the distributor body 83 rather than at a specific point. This avoids the problems caused by conventional point-wise coupling of ultrasonic energy. Even high-power coupling does not damage the connection point. As described above, the distributor body 83 is supplied with the connecting rod 82 already welded, and can be welded to the carrier frame 6 in a simple manner. The distributor body 83 acts as a transducer, coupling ultrasonic waves with increased amplitude into the carrier frame.

[0074] The distributor body 83 can be welded to the carrier frame 6, e.g., pipes, ducts, containers, etc., by unspecified personnel, even after the equipment is already installed and in operation. High temperatures occurring at specific points are avoided. Instead, thermal energy is preferably absorbed over the entire length of the carrier frame 6 and distributor body 83.

[0075] 2a shows a conveying device 1 of the present invention in a main embodiment, with an ultrasonic device 8 comprising an ultrasonic generator 80 connected to a conveying frame 6 or part thereof via an ultrasonic transducer 81, a connecting rod 82, and a distributor body 83. The connecting rod 82 is bent and its front end piece 821 is erected perpendicular to the distributor body 83 (preferably a metal plate) and welded to it. In this case, the upper surface 83U of the distributor body 83 forms the connecting surface or transition piece 838 to which the connecting rod 82 is welded. However, the connecting rod 82 can also be connected to the lower surface 83L or the rear surface 83L of the distributor body 83, if this is sufficiently wide.

[0076] The rear end piece 822 of the coupling rod 82 is connected to an ultrasonic transducer 81, which for example has a coupling bar coupled to a piezoelectric element. Electrodes are placed between the piezoelectric elements to which an AC voltage signal is applied.

[0077] The distributor body 83 is symmetrical and has a connecting surface 836, an upper surface 83U, and a lower surface 83L. The connecting surface 836 includes seven connecting fingers separated from one another by U-shaped recesses 830. The connecting fingers 831 are welded to the conveying frame 6. The conveying frame 6 is symbolically shown as a plate and can be configured in any manner to receive and deliver the process material P. The conveying frame 6 can be, for example, a plate. The conveying frame 6 can be, for example, an at least approximately horizontally aligned plate arranged to mix, separate, and / or distribute the process material P in a dosage manner.

[0078] These processes are supported by the targeted application of ultrasonic energy. For this purpose, a control unit 100 having a control program tp is provided, which issues control signals 108 to the ultrasonic generator 80 to emit ultrasonic signals, possibly sequences of ultrasonic signals, or amalgamations of ultrasonic signals, having the desired frequency and amplitude. As described above, the ultrasonic signals introduced into the distributor body 83 are amplified and transmitted at increased amplitude via the connecting surfaces to the transport frame 6 of the distributor body 83. The arrangement of the coupling fingers 831 and intervening recesses 830 allows the process material P to act non-uniformly, moving and swirling it along substantially the entire length of the transport frame 6.

[0079] Figure 2b shows the conveying device 1 of Figure 2a with a conveying frame 6 that functions as a channel in the form of an upwardly open V-profile. The conveying frame 6 is preferably aligned horizontally or slightly inclined. Under the influence of the wide-ranging ultrasound, the process material P can move along the conveying frame 6 as if it were on a cushion of air. The conveying frame 6 can thus form a conveying channel that can extend in any direction.

[0080] 2c shows the conveying frame 6 of FIG. 2b having a multi-curved distributor body 83. The distributor body 83, which has four curved edges, is connected at both ends by connecting surfaces 836 to the conveying frame 6 and one side 61, 62 of the channel formed by the conveying frame 6. On both sides, the distributor body 83 is welded to two connecting rods 82, respectively, through which high-power ultrasonic energy can be coupled to the conveying frame 6.

[0081] Figure 2d shows the transport frame 6 of Figure 2b in the form of channels welded on both sides to distributor bodies 83A, 83B, which are aligned antiparallel to each other and asymmetrical. Via two distributor bodies 83A, 83B, each connected to an ultrasonic generator 80 via a connecting rod 82 and an ultrasonic transducer 81, ultrasonic energy of any frequency and amplitude can be coupled into the transport frame 6 by a control unit 100 via one distributor body 83A or the other distributor body 83B, or via both distributor bodies 83A, 83B together.

[0082] The asymmetric design and antiparallel alignment of the distributor bodies 83A and 83B allow ultrasonic energy to be coupled into the conveying frame 6 with a corresponding gradient. Therefore, particles of the process material P begin to move differently, moving in one direction or another depending on the type of coupling. When coupling is antiparallel through both distributor bodies 83A and 83B, the process material P is transported in a swirling pattern according to the inclination of the conveying frame 6. However, when ultrasonic energy with different power levels is coupled through the distributor bodies 83A and 83B, movement in one direction or another is also possible. In this case, movement and turbulence may occur simultaneously. For example, the conveying device 1 functions as a mixing device.

[0083] For example, process material P is first dispensed in direction A and then in direction B. The type and variation of ultrasonic energy coupling allows for dispensing of process material P in one direction or the other. The flow of material can also be started and stopped again. The strength of the material flow can be controlled by the strength of the coupling.

[0084] FIG. 2e shows the transport frame 6 of FIG. 2d, integrally connected on both sides to symmetrically shaped, plate-shaped distributor bodies 83A, 83B. The transport frame 6 is cut or stamped from a single sheet of metal and bent into its current shape. The distributor bodies 83A, 83B enable optimal coupling of ultrasonic energy through several coupling fingers. The distributor bodies 83A, 83B can also have an asymmetrical shape in any orientation, so that all of the functions described for the other embodiments of the present invention can also be achieved. Conversely, the transport frame 6 of all other embodiments of the present invention can also be integrally connected to the optional plate-shaped distributor body 83.

[0085] The coupling of ultrasonic energy into the carrier frame 6 is preferably performed as described with reference to Figure 2d, for example.

[0086] By way of example, the conveying frame 6 is shown to optionally include first and second sieve layers S1, S2, each realized by openings or holes having different diameters. Between the two sieve layers S1, S2, a mixing zone is optionally provided, into which additional process material Px can be fed. Thus, the process material P is conveyed, sieved or separated into portions, mixed or loaded with additional additional process material Px, sieved again or separated, and discharged. Thus, the supplied process material P results in separated process material portions P1 and P2 and a process material portion P3, which is discharged at the end of the conveying frame 6. A properly designed conveying frame 6 can realize numerous functions, either individually or in combination with one another.

[0087] The transport frame 6 is connected to four rope-like insulating elements 69 by means of attachment elements 691, by means of which the transport frame 6 can be connected to the support device 10. The transport frame 6 of FIG. 2d can be used, for example, with the transport device 1 of FIG. 11.

[0088] 2f shows a distributor body 83 connected to a coupling rod 82, with coupling fingers 831A, 831B separated from one another by differently designed gaps 830. In this way, any pattern of coupling of ultrasonic energy suitable for the process at hand (e.g., a mixing process, a separating process, or a conveying process) can be produced.

[0089] FIG. 2f further shows that the connecting rod 82 can be welded to the rear face 83R of the distributor body 83.

[0090] Furthermore, it can be seen that the connection surface 800 of the distributor body 83 is several times larger than the diameter of the coupling rod 82. This ratio can be in any range, for example, from 5 to 50 or more (in particular, from 10 to 25).

[0091] The connecting rod 82 and the transport frame 83 can be solid and have a closed cross section. Alternatively, the connecting rod 82 and / or the distributor body 83 can be provided with at least one through-channel or distribution channel 800. Several distribution channels 800 can be provided, connected to one another or extending separately from one another. FIG. 2f shows an optional through-channel or distributor channel 800 that runs through part of the connecting rod 82 and part of the distributor body 83 to the connecting finger 831B. A metal connecting tube 8200 is connected to the connecting opening 820, through which the liquid or gaseous medium M is introduced. Thus, the connecting rod 82 and / or the distributor body 83 and / or the transport frame 6 according to the present invention can be provided with individual channels or channel systems through which the transport frame 6 itself or the transported process material P acts. 2f shows an example of a transport frame 6 having a distribution channel 600 of any shape, into which a medium M is supplied from the distributor body 83, which travels inside the transport frame 6 to an outlet opening and is supplied to the process material P as needed. The distribution channel 600 extending inside the transport frame 6 can also have several outlet openings, for example to mix or swirl the process material P with a liquid or solid. Thus, the gaseous medium can carry a powdery substance to be mixed with the process material P.

[0092] 2g shows the distributor body 83 of FIG. 2f, which is connected to the ultrasonic transducer 18 via the coupling rod 82 and is preferably used to convey a liquid or gaseous medium M, and is therefore fully or partially tubular or equipped with a distribution channel 800. In the illustrated embodiment, the medium M (e.g., air, gas, or liquid), if provided, can optionally be introduced through the ultrasonic transducer 18 and / or, if provided, can optionally be introduced into the coupling rod 82 through an opening 820 in the coupling rod 82, and can be guided through the distribution channel 800 in the distributor body 83 to the outlet of one or more of the coupling fingers 831B.

[0093] Thus, the inventive distributor body 83 in a preferred embodiment comprises one or more distribution channels 800 capable of transporting at least one medium M 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 the transport frame 6. A second medium M (gas or liquid) can be introduced into the transport frame 6 in order to, for example, mechanically or chemically influence the transported process material P. The process material P can, for example, be swirled, collided or mixed by the supplied medium M.

[0094] 2g shows that medium M is introduced into coupling rod 82 through opening 820 in coupling rod 82 or through ultrasonic transducer 81 and is delivered via coupling fingers 831B. One of the distribution channels 800 is shown in dotted line.

[0095] The ultrasonic transducer 81 comprises a ring-shaped piezoelectric element 811 arranged on a mounting shaft 812 and clamped between flange elements 813, 814. The flange element 813 is, for example, a nut screwed onto the mounting shaft 812. A contact disk 8111 and / or an insulating disk 8112 is provided between the piezoelectric elements 811. By applying an AC voltage, preferably in the ultrasonic range, to the piezoelectric element 811, the piezoelectric element 811 is excited into mechanical vibrations. Ultrasonic vibrations are thus transmitted from the ultrasonic transducer 81 to the conveying frame 6 via the connecting rod 82 and the distributor body 83. The mounting shaft 812 is provided with a conveying channel 8120 that passes axially through the mounting shaft 812 and thus through the ultrasonic transducer 81. A medium M can therefore be applied to the inlet of the conveying channel 8120 and supplied to the inlet of the tubular connecting rod 82.

[0096] Thus, in a preferred embodiment, the first medium M is delivered through the ultrasonic transducer 81 to the first coupling finger 831B, and the second medium M is delivered through the opening 820 in the coupling rod 82 to the second coupling finger 831B.

[0097] The distribution channel 800 can also be advantageously realized in a plate-like distributor body 83. For example, two complementary metal plates with a channel structure are connected to each other in such a way that the distribution channel 800 is enclosed between them and is connected to an access channel that connects to the through-channel of the connecting rod 82, for example.

[0098] 3 shows a straight distributor body 83G welded to a first tubular conveying frame 6A, arcuate distributor bodies 83K welded at different heights to a second tubular conveying frame 6B, and a spiral distributor body 83S welded to a third tubular conveying frame 6C. The spiral distributor body 83S is connected to multiple connecting rods 82, allowing ultrasonic energy to be coupled into the third tubular conveying frame 6C along its entire length and circumference. The tubular conveying frame 6 can be connected to the straight distributor body 83G and / or the arcuate distributor body 83K and / or the spiral distributor body 83S in any manner, for example.

[0099] FIG. 4 shows a conveying device 1 with a funnel-shaped conveying frame 6 to which a distributor body 83 is welded.

[0100] 5 shows a conveying device 1 of the present invention comprising a tubular conveying 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 certain dosage through the nozzle 69. Kinetic energy is imparted to the process material P so that it moves slightly upward and emerges from the nozzle 69. The dotted lines indicate that the dispenser body 83 can be symmetrical or asymmetrical.

[0101] FIG. 6 shows the conveying device 1 of the present invention, which has an annular or cylindrical conveying frame 6 into which the functional element (i.e., the sieve lining 21) is inserted. The conveying frame 6 is surrounded by an annular distributor body 83, to which ultrasonic energy can be coupled to the conveying frame 6 and the sieve lining 21 via six equally spaced connecting rods 82A, ..., 82F. The control unit 100 outputs corresponding control signals 108A, 108B, 108C, 108D, 108E, 108F to the ultrasonic generator 80, allowing ultrasonic energy to be applied to the conveying frame 6 and the sieve lining 21 at any gradient. A constant or arbitrarily varying, moving energy pattern can be applied to the sieve lining 21 via the connecting rods 82A, ..., 82F.

[0102] According to these energy gradients and energy patterns, the process material P moves and circulates in any direction on the sieve lining 21. The movement of the process material P can be monitored by optical sensors 51, 52 and reported back to the control unit 100, which can then move and displace the process material P according to its program tp.

[0103] Thus, injection of ultrasonic energy traveling along a gradient is possible not only by the asymmetric design of the distributor body 83 but also by the corresponding coupling of ultrasonic energy via the coupling rods 82A, . . . , 82F.

[0104] 7 shows a rectangular conveying frame 6 into which functional elements or sieve linings 21 are inserted and which is welded on each side to distributor bodies 83A, 83B, 83C, 83D at different heights. The longer distributor bodies 83A and 83C are each welded to two connecting rods 82. The two shorter distributor bodies 83B and 83D are each welded to only one connecting rod 82.

[0105] 8 shows a conveying device 1 of the invention having a distributor body 83 connected to a tubular conveying frame 6 via a coupling device 84. The distributor body 83 couples ultrasonic energy to a connecting bar 841 from which the ultrasonic energy can be distributed to several conveying frames 6. The tubular conveying frames 6 are shown connected to the connecting bar 843, from which ultrasonic energy can be supplied via a transmission bar 842.

[0106] Thus, by means of one or more transmission bars 842, the ultrasonic energy can be guided from the coupling bar 841 to several connecting bars 843 or directly to several carrier frames 6. Depending on the dimensions and cross section of the transmission bars 842, the energy flow of the ultrasonic energy can be adjusted as required.

[0107] 9a shows a distributor body 83 connected by coupling fingers 831 to four cylindrical transport frames 6a, 6b, 6c, 6d, into which cylindrical filter units 7 are inserted. Thus, ultrasonic energy can be transmitted to the various transport frames 6 through the coupling fingers 831, which form the connecting surface 836 of the distributor body 83. One of the filters 7 is partially extracted. In two of the transport frames 6a, 6b, filters 7 have not yet been inserted. The device is placed, for example, inside a container 60.

[0108] This embodiment of the present invention also exhibits the advantage of distributor body 83, which allows ultrasonic energy to be transformed and advantageously distributed.

[0109] Figure 9b shows the distributor body 83 of Figure 9a with one of the carrier frames 6B.

[0110] 10a shows a distributor body 83 having two connection surfaces 836, each of which is connected to two cylindrical transport frames 6a, 6B; 6C, 6D, each made in one piece from a metal sheet. After pre-machining, e.g., providing openings, the metal sheet can be bent to obtain the desired cross-section, such as a circle, rectangle, triangle, or polygon. Between the two transport frames 6a, 6B; 6C, 6D, a connecting piece remains, to which the distributor body 83 can be welded.

[0111] Figure 10b shows the distributor body 83 of Figure 10a in the shape of a butterfly with two wings, each of which is provided around its periphery with a connecting surface 836. The distributor body 83 may also have further wings which preferably surround each other at equal angles.

[0112] The connecting rod 82 is welded to the transition piece 838 between the two wings, and its end piece extends perpendicular to the front or rear surface of the plate-shaped distributor body 83. The end piece of the connecting rod 82 connected to the ultrasonic vibrator 81 extends parallel to the axial direction in the center between the cylindrical conveying frames 6a, 6b; 6c, 6d. In this configuration, the conveying device 1 can be axially inserted into the pipe or container 60 (see FIG. 9a). Therefore, the connecting device 1 can be adapted to any receptacle.

[0113] 11 shows a conveying device 1 according to the invention with a conveying frame 6 according to FIG. 2e, which is suspended from the support device 10 by four rope-like insulating elements 69. The conveying frame 6 is suspended and insulated from the support device 10 and therefore forms a barely damped vibration system that can optimally transport or convey the process material supplied from the supply device 9.

[0114] By preferably individually controlling the ultrasonic transducers 81 by means of signals 188, the conveying process on the conveying frame 6 can be controlled and the process material P can be precisely distributed. Due to the integral connection of the possibly plate-shaped distributor body 83 with the conveying frame 6 and the floating installation of the conveying frame 6 forming a vibration system, the desired treatment of the process material P is already possible with a low energy input. Through appropriate control, the process material P can be acted on in a targeted manner in order to convey it in a dosed manner and to mix it if necessary.

[0115] The feeder 9, positioned above the conveying frame 6, comprises an input channel 91 and an output channel 93, both of which are shown cut open, and encloses a sieve 2 therebetween. The sieve 2 consists of a perforated plate connected to an ultrasonic transducer 81 by a curved connecting rod 82. A rotor 95, driven by a motor 96, is rotatably held within the input channel 91 and pre-treats and / or feeds the process material P to the sieve 2.

Claims

1. A conveying device (1) for conveying a powdery or granular process material (P), comprising a metallic open or self-enclosed conveying frame (6), the conveying frame (6) being provided for conveying the process material (P), the conveying frame (6) being held by a support device (10) and connected to an ultrasonic device (8), the ultrasonic device (8) comprising an ultrasonic generator (80), a vibrator (81) connected to the ultrasonic generator (80), and a connecting rod (82) connected to the ultrasonic vibrator (81) and having a front end piece (821) and a rear end piece (822), A flat distributor body (83) made of metal is provided, the distributor body (83) having an upper surface (83U), a lower surface (83L), a rear surface (83R), and at least one connecting surface (836) around the periphery, the rear end piece (822) of the connecting rod (82) is connected to the ultrasonic vibrator (81), and the front end piece (821) of the connecting rod (82) is welded to the rear surface (83R), the upper surface (83U), or the lower surface (83L) of the distributor body (83); The at least one connecting surface (836) of the distributor body (83) is integrally connected or welded to the at least one conveying frame (6); The conveying device (1) is characterized in that the distributor body (83) has coupling fingers (831) of the connection surface (836) that are separated from each other by intermediate spaces (830), and the coupling fingers (831) have the same or different cross sections.

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

3. 3. The conveying device (1) according to claim 1 or 2, characterized in that the conveying frame (6) comprises or holds at least one functional element (21, 7) serving for the treatment of the process material (P), such as a sieve lining (21) or a filter (7).

4. The conveying device (1) according to any one of claims 1 to 3, characterized in that the connection surface (836) of the distributor body (83) is adjacent to the conveying frame (6), and the distributor body (83) is symmetrical or asymmetrical with respect to an axis extending perpendicular to the conveying frame (6) and is aligned in one or the other direction parallel or inclined to the conveying direction of the process material (P).

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

6. 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 by the transport frame (6), or The conveying device (1) according to any one of claims 1 to 5, characterized in that the distributor body (83) and the conveying 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 vibrator (81), and from which the medium (M) can be discharged via one or more outlet openings into the conveying frame (6) or the process material (P) carried by the conveying frame (6).

7. The conveying device (1) according to any one of claims 1 to 6, characterized in that the conveying frame (6) is connected to the support device (10) by one or more non-metallic or elastic or non-metallic and elastic insulating elements (69).

8. The conveying device (1) according to any one of claims 1 to 7, characterized in that two cylindrical conveying frames (6A, 6b; 6C, 6D) are integrally formed from a sheet, which is welded to one of the connection surfaces (836) of the distributor body (83) between the two conveying frames (6A, 6b; 6C, 6D).

9. The conveying device (1) according to any one of claims 1 to 8, characterized in that several distributor bodies (83), each connected to the ultrasonic generator (80) via at least one connecting rod (81) and an ultrasonic vibrator (81), are welded to the conveying frame (6) in the same plane or in different planes, or the distributor bodies (83), connected to the ultrasonic generator (80) via at least one connecting rod (81) and one ultrasonic vibrator (81), at least partially surround the conveying frame (6) as a circular segment, a ring segment or a spiral.

10. The conveying device (1) according to any one of claims 1 to 9, characterized in that the distributor body (83) is connected to the conveying frame (6) via a coupling device (84), the coupling device (84) including a coupling bar (841) welded to the distributor body (83) and connected by at least one transmission bar (842) to at least one connection bar (843) welded to the associated conveying frame (6).

11. 11. A method for controlling a conveying device (1) for conveying powdery or granular process material (P) according to any one of claims 1 to 10, said conveying device (1) comprising: a metallic carrier frame (6) held by a support device (10) and connected to an ultrasonic generator (80) via at least one distributor body (83) and at least one connecting rod (82) and an ultrasonic vibrator (81); a control unit (100) having a control program (tp), the control unit (100) outputting control signals (108A, 108B) to the ultrasonic generator (80) to control the conveying operation; An operating method comprising:

12. 12. The method of claim 11, wherein the ultrasonic generator (80) is controlled to supply ultrasonic energy to each of two asymmetrically shaped distributor bodies (83A, 83B) aligned antiparallel to convey the process material (P) in a first or second direction.

13. 13. The operating method according to claim 11 or 12, characterized in that the ultrasonic generator (80) is controlled to supply ultrasonic energy to the conveying frame (6) having a sieve lining (21) via at least one of a plurality of connecting rods (82A, ..., 82F) and via at least one distributor body (83), so that the process material (P) supported on the sieve lining (21) is moved or circulated in one direction.

14. 14. The method of claim 11, wherein the ultrasonic generator (80) is controlled to supply ultrasonic energy to the transport frame (6) via at least one connecting rod (82) so that the process material (P) stored or transported in the transport frame (6) is delivered in a desired dosage.

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