• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    Sieve device (1) with a sieve frame (3) spanning a sieve surface (2), at least two sound conductors (4-6) and a vibration exciter to set the sound conductors (4-6) vibrating, the sound conductors (4-6) are coupled to the vibration exciter via a vibration transmitter (10). The sieve frame (3) is covered with a sieve fabric (8). The screen mesh (8) is glued to a sound conductor (4-6) and / or the screen frame (3). The vibration transmitter (10) comprises a resonator rod (11) to which both sound conductors (4-6) are directly coupled.
    公开号:CH713698B1
    申请号:CH00393/18
    申请日:2018-03-23
    公开日:2021-09-30
    发明作者:Stichling Michael；Laukötter Ingo
    申请人:Haver & Boecker Ohg；
    IPC主号:
    专利说明:

    The present invention relates to a sieve device with a sieve frame spanning a sieve surface and at least two sound conductors and a vibration exciter, the vibration exciter causing the sound conductors to vibrate. For this purpose, the sound conductors are coupled with the vibration exciter.
    A wide variety of screening devices have become known in the prior art. For the same area of application, for example, DE 44 18 175 C5 discloses a device and a method for sieving, classifying, sifting, filtering or sorting substances, a sieve surface provided in a sieve frame and an associated ultrasonic transducer being provided. The screen surface can be subjected to vibrations through the ultrasonic transducer. The ultrasonic transducer is assigned at least one resonator, which rests on the screen surface and is matched to the resonance of the ultrasonic transducer and can be caused to oscillate by the latter, in particular flexural oscillations. In this case, at least one concentric ring-shaped rod resonator is provided in a circular frame, which is connected to the frame by decoupling plates. The decoupling plates are preferably fixed in a node of the movement. This known device allows sound to be distributed over the active sieve mesh, with a large-area sieve mesh also being able to distribute several resonators over the sieve mesh. It is considered a disadvantage of this device that the tuning of the resonator is associated with a great deal of effort and can practically only be implemented for a few simple resonator geometries.
    With DE 10 2006 03763 8 A1 a further device for sieving, classifying, filtering or sorting dry solids or solids in liquids with at least one ultrasonic converter and with at least one sound conductor and at least one sieve frame is known for the same area of application become, with connecting elements to at least one sieve frame or sound conductor are attached outside of vibration nodes of a non-resonant sound conductor or sieve frame, which are suitable for the transmission of vibration excitation of the sound conductor or sieve frame to the sieve frame or sound conductor. In the known device, a feed line resonator is arranged between the ultrasonic converter and the sound conductor, the feed line resonator being suitable for exciting flexural vibrations or for exciting longitudinal vibrations. Such a device also enables the construction of a sieve device with several sound conductors in order to set a larger sieve surface in vibration.
    The disadvantage of the known devices, however, is that there is still a considerable inequality of the vibration excitation over a larger screen surface with several sound conductors. In particular, sound conductors arranged further away from the vibration exciter receive less oscillation power, as a result of which only less oscillation energy is applied to the screen mesh in the area of the more distant sound conductor. One solution to this problem is to use several vibration exciters, one vibration exciter in each case exciting a sound conductor in order to set a certain area of the screen surface in vibration. This improves the homogeneity of the transmission of vibrational energy, since more distant sound conductors can be dispensed with. Disadvantages of this, however, are the outlay on equipment and also the considerably greater outlay on control, which results in higher costs.
    It is therefore the object of the present invention to provide a sieve device which allows a more homogeneous distribution of the vibrations on the sieve surface with less effort.
    This object is achieved by a screening device having the features of claim 1. Preferred developments of the screening device according to the invention are the subject matter of the dependent claims. Further advantages and features of the present invention emerge from the general description and the description of the exemplary embodiments.
    A sieve device according to the invention has at least one sieve surface which is spanned by a sieve frame. Furthermore, at least two sound conductors and a vibration exciter are provided in order to set the sound conductors in vibration. The sound conductors are coupled to the vibration exciter via a vibration transmitter. In particular, the screen frame is covered with a screen fabric. The screen fabric is glued to at least one sound conductor and / or the screen frame. The vibration transmitter comprises a resonator rod to which the two sound conductors (in particular directly and / or directly) are coupled.
    The screening device according to the invention has many advantages. A considerable advantage of the screening device according to the invention is that two or more sound conductors can be caused to vibrate with just one vibration exciter, both sound conductors being coupled to the resonator rod of the vibration transmitter.
    In the prior art, a vibration transmitter consists of several resonator bars. If, for example, a circular sieve frame with two (or more) concentrically arranged sound conductor rings is used in a known sieve device, a vibration transmitter z. B. radially from the outside to transmit the vibration to the exterior of the two sound conductor rings. For this purpose, an outer resonator rod is used which is welded to the outside of the two sound conductor rings on the outside thereof. An inner resonator rod is welded onto the inside of the outer sound conductor ring and is welded to the outer side of the inner sound conductor ring. As a result, in this known system, the vibration was transmitted radially from the outside from the vibration exciter via the outer resonator rod (the weld seam) to the outer sound conductor ring and from there (via the inner weld seam and) via the inner resonator rod again via the weld seam to the inner sound conductor ring. It has been found that these welded joints, which are very stiff and strong, transmit or even absorb a considerable part of the vibration energy in a phase-shifted manner. In any case, such a system consisting of several resonator rods, weld seams and sound conductor rings transmits the excited oscillation frequency to more distant sound conductors only to a considerably weaker extent or at least not without loss.
    In the present invention, in contrast, the vibration of the resonator rod is now transmitted practically directly from the resonator rod to both sound conductors. This avoids a different number of material transitions. So it is not necessary to transfer the vibration power for the most distant sound conductor over several welds and sound conductor rings, but the vibration energy is transferred from the resonator rod directly to one sound conductor and the other sound conductor (and possibly further sound conductors).
    In a preferred embodiment, the sieve device comprises a sieve frame and an at least partially provided sieve surface, the sieve frame being provided and designed to be covered with a sieve fabric, the sieve frame being assigned a vibration exciter and the vibration exciter having a plurality connected by sound conductors. The vibration exciter is coupled to preferably at least two sound conductor rings via a continuous vibration transmitter.
    In preferred embodiments, the resonator rod is solid. It is also possible for the resonator rod to be hollow.
    The resonator rod can be designed as a polygonal rod, rectangular rod or preferably also as a round rod. It is also possible for the resonator rod to have an O-, T-, X-, L-, V- or U-shaped or elliptical or other suitable cross section. In particular, the cross section of the resonator rod is adapted to the vibration frequency to be transmitted or the vibration frequency range to be transmitted.
    In preferred developments, the resonator rod is positively and / or non-positively (firmly) connected to the sound conductors. In particularly preferred refinements, the resonator rod is connected to the sound conductors in both a form-fitting and a force-fitting manner.
    In advantageous developments, the sound conductor is welded or soldered or glued to the resonator rod. It is particularly preferred that the resonator rod has at least one recess for the form-fitting reception of a sound conductor. A sound conductor received in this way in a recess on the resonator rod allows a particularly efficient transmission of vibrations to the sound conductor. In particular, the sound conductor is pressed into the recess.
    In a particularly preferred development, the recess is formed in an upper part of the resonator rod and serves to receive a lower part of a sound conductor in a form-fitting manner. Under "below" and "above" are to be understood here the directions in the intended assembly and in the intended use. It is also possible, however, for the recess to be formed in a lower part of the resonator rod and to serve to receive an upper part of a sound conductor in a form-fitting manner.
    Embodiments are preferred in which the recesses are provided in an upper part of the resonator rod, since these embodiments open up the simple possibility that the resonator rod is partly arranged below the sound conductor. This is a structurally simpler refinement, since the screen fabric to which the sound conductors transmit the vibration is typically arranged directly above the sound conductor.
    In all embodiments, it is also possible that the recess is formed in a right or left part of the resonator rod and a part of the sound conductor is positively received therein in an analogous manner in order to reliably and efficiently transmit the vibrations acting in the resonator rod to the sound conductor and in particular to transmit the sound conductor. It is also possible that a z. B. designed as a ring sound conductor has a downward protrusion to which the resonator rod (from below, the side or an upper surface) is coupled. The extension is in particular formed in one piece with the rest of the sound conductor or can be designed as a separate part and firmly connected to the sound conductor and z. B. be welded. If all sound conductors are connected to the resonator rod in the same way, the desired uniform excitation of all sound conductors is achieved.
    In all configurations, it is possible to designate the vibration transmitter as a feed line resonator.
    [0020] The resonator rod preferably has two or more recesses for positively receiving a sound conductor in each case. In the case of spiral sound conductors, it is also possible for the resonator rod to have two or more recesses for a single sound conductor.
    In preferred developments, the resonator rod passes through the screen frame without contact. For this purpose, a through opening is preferably formed on the sieve frame, through which the resonator rod is guided in a contactless manner. This results in a decoupling of the resonator rod from the screen frame, so that particularly efficient transmission of the vibrations to the screen fabric is possible.
    In other embodiments, it is also possible for the resonator rod to be guided to the sound conductors below the screen frame. Then a through opening is not necessary.
    In all of the configurations, the resonator rod is preferably arranged in the area of the sound conductor in a plane which is offset in height from a plane of the through opening or a middle plane of the screen frame. This means that the resonator rod does not extend completely within a plane parallel to the plane of the sieve fabric and / or the plane of the sieve frame, but that part of the resonator rod preferably extends in a first plane and a further part of the resonator rod in a second and to it staggered level extends. This enables a small screen device. The construction volume is used optimally. The screen frame does not have to be made higher than necessary. The supply of the vibrations via the resonator rod can take place at the level of the sieve frame and through the sieve frame, while the resonator rod is preferably located somewhat lower in the area of the sound conductor and is coupled there to the sound conductors. Or the vibrations are fed in below the sieve frame. The resonator rod is preferably bent twice (in particular in opposite directions) between the screen frame and a first sound conductor. The two bends are particularly preferably designed in such a way that the resonator rod is located in the area of the passage through the screen frame and in the area of the sound conductor in two planes which are offset in height. If the resonator rod is arranged below the sieve frame and does not pass through the sieve frame, the resonator rod is preferably also deflected twice, the resonator rod then preferably being arranged lower in the area of the sieve frame than in the area of the sieve surface.
    In all embodiments, it is preferred that at least one sound conductor is designed as a closed sound conductor ring. Such a sound conductor ring can have a rectangular or elliptical or circular shape or some other shape. Preference is given to rectangular shapes or rectangular shapes with rounded corners or also circular shapes. Such a configuration allows a homogeneous distribution of the vibration energy on the screen surface.
    A sound conductor can have a polygonal and in particular approximately rectangular cross-section in all configurations. It is also possible for the sound conductor to have a T, X, L or U-shaped or elliptical cross section. In preferred refinements, the different sound conductors have (essentially) the same cross section.
    At least one sound conductor is particularly preferably designed as a hollow profile.
    At least one sound conductor is preferably connected to another sound conductor and / or the screen frame via at least one connecting element and in particular a plurality of connecting elements. The connecting elements can preferably be fixed in a node of the movement. The connecting elements can also be used to transmit vibration energy to the screen frame.
    The screen frame is preferably covered with at least one screen fabric. It is preferred that the screen fabric is glued to at least one sound conductor and / or the screen frame. The screen fabric can comprise two or more fabric layers.
    In all embodiments, it is particularly preferred that the vibration exciter comprises at least one ultrasonic converter or is designed as an ultrasonic converter. In particular, the ultrasonic converter has a (working) frequency between 10 kHz and 50 kHz. The ultrasonic converter preferably has a frequency of 10-40 kHz and preferably between 20 and 40 kHz.
    It is preferred that the ultrasonic converter (at least) has a frequency between 30 kHz and 40 kHz. The frequency can preferably be changed during operation, so that in particular periodically changing frequencies are possible during operation.
    The vibration exciter is advantageously attached outside the screen surface.
    In other preferred embodiments, the vibration exciter (or at least one vibration exciter) is attached within the screen surface and preferably above the screen surface. It is also possible that the vibration exciter is attached below the screen surface. In particular, the vibration exciter is arranged in such configurations within a projection perpendicular to the screen surface.
    In preferred developments of all of the configurations, at least one second vibration exciter and an associated second resonator rod are provided. A second vibration exciter and an associated second resonator rod (in particular geometrically) are preferably arranged opposite the first system (vibration exciter + resonator rod). With even more systems an even distribution z. B. preferred over the circumference.
    In further refinements and developments, the type of vibration excitation and the application of the vibrations to the screen fabric can take place, as disclosed in DE 10 2006 037 638 A1 and / or DE 44 18 175 C5.
    Further advantages and features of the present invention emerge from the exemplary embodiments which are explained below with reference to the accompanying figures.
    The figures show: FIG. 1 a slightly perspective top view of a sieve device according to the invention; FIG. 2 shows a schematic partial cross section through the sieve device according to FIG. 1; FIG. 3 shows an enlarged detail from FIG. 1; FIG. 4 shows a plan view of a further exemplary embodiment of a sieve device according to the invention; FIG. 5 shows a schematic cross section through the vibration transmitter of the screening device according to FIG. 4; and FIG. 6 shows a plan view of another exemplary embodiment of a sieve device according to the invention.
    The sieve device 1 according to the invention, which is shown in FIGS. 1 to 3, has a sieve surface 2 on a sieve frame 3 which is covered with a sieve fabric 8. For the sake of better clarity (as in each of the other exemplary embodiments), only a small section of the screen fabric 8 is shown schematically.
    In the approximately circular screen frame 3 of the screen device 1, three here also circular sound conductors 4, 5 and 6 are arranged concentrically to one another, which are set in vibration via a vibration transmitter 10 by the vibration exciter 7, which can only be seen in FIG.
    The vibration transmitter 10 comprises a resonator rod 11 which is guided through the screen frame 3 on the receptacle 29 without contact and which is directly connected to the sound conductors 4, 5 and 6.
    The resonator rod 11 is made in one piece and is directly and directly connected to the sound conductors 4, 5 and 6, so that the vibration energy that is introduced by the vibration exciter 7 into the resonator rod 11, each directly from the resonator rod 11 to the respective sound conductor 4, 5 and 6 is transmitted. In contrast to the prior art, there is no transmission from one resonator rod to a sound conductor and from there again to the next resonator rod, etc., but the vibrations are transmitted directly from the resonator rod to all sound conductors.
    In all embodiments and configurations, however, it is also conceivable to use two resonator rods, a first resonator rod transmitting the vibrations from the vibration exciter to a first surface of a first sound conductor (e.g. radially outside). From a second surface of the first sound conductor (e.g. the inside of the first sound conductor or the opposite outside), the vibrations are then transmitted to all further sound conductors via the second resonator rod. With such a configuration it is also ensured that a homogeneous excitation of all sound conductors takes place, even if the use of the two separate resonator rods means that the overall energy input is not quite as high as with a single one.
    The individual sound conductors are connected to one another and / or to the frame 3 via connecting elements 22 and 23. The connecting elements 22 extend between the outer sound conductor 4 and the screen frame 3. The connecting elements 23 each extend between the sound conductors 4 and 5 or 5 and 6.
    Via the connecting elements 22 and 23, the vibrations can be decoupled from the sound conductors and the screen frame 3, depending on requirements and structural design. If necessary, the screen frame 3 can also be made to vibrate.
    As can be seen in Figure 1 and Figure 3, the resonator rod 11 is connected via the holder 28 to the screen frame 3 such that an oscillation in the longitudinal direction of the resonator rod is made possible, while the resonator rod is held transversely to the longitudinal extent defined.
    FIG. 2 shows a radial partial cross section through the sieve device 1 from FIG. 1, the sieve fabric 8 extending above the sound conductors 4, 5 and 6 and the sieve frame 3. The sound conductors 4, 5 and 6 are designed here as circular sound conductor rings and each have the cross section of a hollow rod. The cross section of the sound conductors 4, 5 and 6 is approximately rectangular, the rectangle having an elongated shape and extending longer in the vertical direction transversely to the resonator rod than in the direction of the resonator rod.
    The resonator rod 11, which here essentially forms the vibration transmitter 10, has three recesses 13 in which the sound conductors 4, 5 and 6 are each received. The recesses 13 are preferably designed in a form-fitting manner, so that the sound conductors 4, 5 and 6 are particularly preferably pressed into the recesses. To further improve the sound transmission, weld seams 25 are preferably provided, with which the sound conductors 4, 5 and 6 are each welded to the rod material of the resonator rod 11.
    The cutouts are preferably located in the upper part 14 of the resonator rod 11 and here (approximately) in the upper half of the resonator rod 11.
    It is also conceivable that the recesses are formed in the lower part of the resonator rod and an upper part or part of the sound conductor is received therein.
    In the cross section according to FIG. 2, the resonator rod 11 has two bends 20 and 21 which ensure a parallel offset of the two longitudinal sections of the resonator rod 11. In the area of the passage opening 9 through the sieve frame, the resonator rod 11 is arranged in the plane 19, while the resonator rod 11 extends in the area of the sound conductors 4 to 6 in a plane 18 which is offset in height from the plane 19. The height offset is dimensioned such that the sound conductors 4 to 6 are received from below in the recesses 13 of the resonator rod 11. The height offset is here between 1/5 and 2/3 the height of a sound conductor and in particular approximately half the height (+/- 10%) of the height of the resonator rod 11. A supply below the screen frame is also possible, with one then also regularly (reverse) height offset is present.
    FIG. 3 shows a detail from FIG. 1 in a top view, the area of the through opening 9 for the resonator rod 11 being shown in a horizontal cross section. The resonator rod 11 passes through the through-opening 9 without contact and is held by the holder 28, the holder 28 not damping vibrations in the longitudinal direction of the resonator rod, or damping them only very little.
    The vibration exciter 7, which is shown in Figure 3 only schematically as a black box dashed, can be mounted on the receptacle 29 and transmits the vibrations generated to the vibration transmitter 10 or the resonator rod 11, which is designed here as a round rod 12 and from Solid material.
    The resonator rod 11 is preferably made of metal and in particular of steel and preferably also high-alloy steel (stainless steel).
    The sound conductors 4 to 6 are preferably also made of metal and in particular of a light metal such as an aluminum alloy or of other light metals. In the specific example, a hollow profile made of stainless steel is used.
    FIG. 4 shows a further exemplary embodiment of a screening device according to the invention, in which the connection of the sound conductors 4 to 6 to the resonator rod 11 of the vibration transmitter 10 is implemented differently than in the exemplary embodiment according to FIGS. 1 to 3.
    The basic configuration of the sieve device 1 according to FIG. 4 corresponds to the configuration of the sieve device according to FIG. 1. Here, too, the sieve device 1 is roughly circular in shape and has three concentric sound conductors 4 to 6, which are each arranged concentrically to one another and as sound conductor rings 24 are formed. The respective sound conductors 4 to 6 are each connected to the screen frame 3 or to the other sound conductors via connecting elements 22 and 23.
    In addition, a cross-shaped stabilization 27 is shown in FIG. 4, which extends below the screen surface and serves to stabilize the screen frame 3.
    The vibration transmitter 10, which is also embodied in one piece here, or the resonator rod 11 of the vibration transmitter in turn extends in one piece and without contact through the screen frame 3 and is firmly coupled to the sound conductors 4, 5 and 6.
    FIG. 5 shows a schematic radial cross section through the resonator rod 11 in the configuration according to FIG. 4.
    In the embodiment shown, the resonator rod 11 does not have any recesses 13, in contrast to the embodiment according to FIGS. In contrast to this, the respective sound conductors 4 to 6 are provided with a bushing 26 in the form of a through opening or a bore through which the resonator rod 11 is passed. For the fixed connection of the sound conductors 4 to 6 to the resonator rod 11, the sound conductors 4 to 6 are connected to the resonator rod 11 at the appropriate position via (here preferably) weld seams 25 on both sides. This also results in a firm coupling of the sound conductors 4 to 6 to the resonator rod 11. Here, too, the sound conductors 4 to 6 are each directly and directly coupled to the resonator rod 11, so that a power-reducing coupling of the more distant sound conductor 5 or 6 is avoided.
    FIG. 6 shows a schematic top view of a further exemplary embodiment of a sieve device 1 according to the invention, a rectangular sieve frame 3 being used here, on which two sound conductors 4 and 5, which are likewise rather rectangular, are provided. It is also possible for three or more sound conductors to be provided one inside the other or one behind the other.
    The sound conductors 4 and 5 are connected to the frame 3 via connecting elements 22. A vibration transmitter 10 is used to excite the sound conductors 4 and 5, which here again comprises a one-piece, continuous resonator rod 11, which extends from the outside through the passage opening 9 and transmits the vibrations to the sound conductors 4 and 5.
    The one-piece resonator rod 11 can extend through feedthroughs 26 on the sound conductor 4 and on the sound conductor 5 to the rear end of the sound conductor 5, as FIG. 5 basically shows. The sound conductors 4 and 5 can, however, also be connected to the resonator rod 11 via a type of connection as in FIG.
    In both variants, the sound conductors 4 and 5 can only be connected to the resonator rod 11 at the front (rear) ends, as shown by the solid (dashed) arrows with reference numeral 25 in FIG Sound conductors 4 and 5 are connected to the resonator rod 11 via weld seams 25 and / or recesses 13 at the front and rear ends of a sound conductor 4 and 5, respectively.
    In all configurations, screening devices with a diameter or a length of up to 2650 mm or even 2900 mm or 4000 mm and more can be made available. Such sieve devices enable particularly effective processing of, for example, metal powders, colored powders, fine minerals, bronze powders or aluminum powders, quartz sand and other particles with a size of up to 500 μm or 1000 μm or finer.
    A screening device according to the invention enables a more homogeneous power distribution and a greater power input, which can be 10% or 20% or even more locally.
    To connect the resonator rod 11 to the sound conductors 4 to 6, etc., welding, screwing, gluing, soldering, pressing or some other joining method can be used in addition to or instead of a form fit.
    In all of the configurations it is possible for the screen fabric to be glued to the frame. However, it is also possible that the screen mesh only rests on the frame and is only glued to the sound conductors 4 to 6.
    At least one frequency in the range from 30 to 38 kHz is preferably used as the excitation frequency. It is also possible to use two or more parallel excitation frequencies (frequency ranges) or two or more different excitation frequencies in succession.
    The invention has great advantages particularly in the explosion-protected area of application. A better sieving result and a better distribution of the products to be sieved are achieved. A longer service life can also be achieved. One of the reasons for this is that the vibration power is introduced more homogeneously. A more even distribution of the energy (ultrasonic energy) is achieved and thus fewer hotspots arise, which is particularly advantageous in explosion-protected areas of application.
    List of reference symbols:
    1 screen device 2 screen surface 3 screen frame 4 sound conductor 5 sound conductor 6 sound conductor 7 vibration exciter 8 screen mesh 9 passage opening 10 vibration transmitter 11 resonator rod 12 round rod 13 recess 14 upper part of 11 15 lower part of 4 18 level 19 level of 9 20 bend 21 bend 22 Connection element 23 Connection element 24 Sound conductor ring 25 Weld seam 26 Feedthrough 27 Stabilization 28 Holder of 11 29 Receptacle 30 Ultrasonic converter
    权利要求:
    Claims (15)
    [1]
    1. Sieve device (1) with a sieve frame (3) spanning a sieve surface (2), at least two sound conductors (4-6) and a vibration exciter (7) to set the sound conductors (4-6) in vibration, the sound conductors (4-6) are coupled to the vibration exciter (7) via a vibration transmitter (10),characterized,that the screen frame (3) is covered with a screen fabric (8) and that the screen fabric (8) is glued to at least one sound conductor (4-6) and / or the screen frame (3) and that the vibration transmitter (10) has a resonator rod ( 11) to which the two sound conductors (4-6) are coupled.
    [2]
    2. Sieve device (1) according to the preceding claim, wherein the resonator rod (11) is solid or hollow and / or wherein at least one sound conductor (4-6) is designed as a hollow profile.
    [3]
    3. Sieve device (1) according to one of the preceding claims, wherein the resonator rod (11) is designed as a polygonal rod, rectangular rod or as a round rod (12) or wherein the resonator rod (11) has an O-, T-, X-, L-, Has U- or V-shaped cross-section.
    [4]
    4. Sieve device (1) according to one of the preceding claims, wherein the resonator rod (11) with the sound conductors (4-6) is positively and / or non-positively connected.
    [5]
    5. Sieve device (1) according to one of the preceding claims, wherein at least one sound conductor (4-6) is welded or soldered or glued to the resonator rod (11).
    [6]
    6. Sieve device (1) according to claim 4 or 5, wherein the resonator rod (11) has at least one recess (13) for the form-fitting reception of a sound conductor (4-6) and wherein the resonator rod (11) in particular two or more recesses (13) has for form-fitting reception of a sound conductor (4-6) in each case.
    [7]
    7. sieve device (1) according to the preceding claim 6, wherein the respective recess (13) is formed in an upper part (14) of the resonator rod (11) and wherein therein a lower part (15) of a sound conductor (4-6) form-fitting is recordedor wherein the respective recess (13) is formed in a lower part of the resonator rod (11) and wherein an upper part of a sound conductor (4-6) is received therein.
    [8]
    8. Sieve device (1) according to one of the preceding claims, wherein the resonator rod (11) passes through the sieve frame (3) without contact at a through opening (9) and / or wherein the resonator rod (11) below the sieve frame (3) to the sound conductors ( 4-6).
    [9]
    9. Sieve device (1) according to the preceding claim 8, wherein the resonator rod (11) extends in the region of the sound conductor (4-6) in a plane (18) which is arranged offset in height to a plane (19) of the through opening (9) and wherein the resonator rod (11) is bent twice in particular between the screen frame (3) and a first sound conductor (4).
    [10]
    10. Sieve device (1) according to one of the preceding claims, wherein at least one sound conductor (4-6) is designed as a closed sound conductor ring (24) and wherein the sound conductor ring (24) in particular has a rectangular or elliptical shape or a circular shape and / or wherein the sound conductor (4-6) has a polygonal or rectangular or T-, X-, L- or O-shaped or U-shaped or elliptical cross section.
    [11]
    11. Sieve device (1) according to one of the preceding claims, wherein at least one sound conductor (4) is connected to another sound conductor (5) and / or the sieve frame (3) via connecting elements (22, 23).
    [12]
    12. Sieve device (1) according to one of the preceding claims, wherein the sieve fabric (8) comprises two or more fabric layers.
    [13]
    13. Sieve device (1) according to one of the preceding claims, wherein the vibration exciter (7) comprises at least one ultrasonic converter (30) and wherein the ultrasonic converter (30) preferably has a frequency between 10 kHz and 50 kHz.
    [14]
    14. Sieve device (1) according to one of the preceding claims, wherein the vibration exciter (7) is attached outside the sieve surface (2) or wherein the vibration exciter (7) is attached inside the sieve surface (2) and preferably above the sieve surface (2).
    [15]
    15. Sieve device (1) according to one of the preceding claims, wherein at least one second vibration exciter and an associated second resonator rod are provided.
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    同族专利:
    公开号 | 公开日
    CH713698A2|2018-10-15|
    DE102017106930A1|2018-10-04|
    DE102017106930B4|2020-10-08|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    DE4418175C5|1993-05-26|2006-02-16|Telsonic Ag|Apparatus and method for sifting, classifying, sifting, filtering or sorting fabrics|
    GB2395923A|2002-12-02|2004-06-09|Russel Finex|Sieving apparatus|
    DE102006047591B4|2006-08-10|2015-08-13|Artech Systems Ag|Apparatus and method for screening, classifying, filtering or sorting dry solids or solids in liquids|
    DE102006037638B4|2006-08-10|2014-05-22|Artech Systems Ag|Method and apparatus for sieving, classifying, filtering or sorting dry solids or solids in liquids|
    TWM469120U|2013-07-31|2014-01-01|Si-Lin Yu|Ultrasonic vibrating screener|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    DE102017106930.5A|DE102017106930B4|2017-03-30|2017-03-30|Sieve device|
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