• 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:
    A screening machine (1) for classifying or processing bulk material, in particular of gravel or sand, with a drive (7) for generating a vibrating movement of a machine body (14) and a vibration damping system is described, wherein the vibration damping system comprises at least one air bellows (4) on which the machine body (14) is mounted.
    公开号:CH706283B1
    申请号:CH00540/12
    申请日:2012-04-20
    公开日:2016-06-30
    发明作者:Schmitt Burkhard
    申请人:Steinhaus Ges Mit Beschränkter Haftung；
    IPC主号:
    专利说明:

    The invention relates to a screening machine for classifying or processing of bulk material, in particular of gravel or sand according to the preamble of claim 1. Furthermore, the invention relates to a vibration damping system according to the preamble of claim 9.
    Screening machines are used in the processing technology, for example, to separate stones, sand or earth mechanically particle size and produce certain grain fractions. Such screening machines are therefore also referred to as classifying machines.
    However, screening machines are also used to remove gravel or sand mixed with other organic matter, e.g. Wood, coal or the like is contaminated to clean. Such screening machines comprise a container which is set in shaking motion by means of a drive. As a result of the shaking or vibrating movements, the raw material migrates from the material feed side to the discharge side, where it is cleaned by the addition of water.
    In addition, there are also screening machines which are suitable for drying bulk material such as e.g. Sand be used. In such screening machines, the bulk material is also transported by shaking or oscillating movements of a material-task side to the discharge side, wherein the water contained in the bulk material is separated.
    The shaking movements or vibrations occurring during operation of a screening machine generally reach an amplitude between 8 mm and 20 mm with an acceleration of up to 6 g. In order to dampen these vibrations, leaf springs, helical compression springs or rubber buffers are usually used. In classifying machines, more than 95% of helical compression springs are in use. However, helical compression springs have the disadvantage that the inclination of the screening machine is not adjustable. In addition, coil springs must be housed in order to avoid accidents.
    In addition, known screening machines with helical compression springs require an additional brake, which strong oscillatory movements, which occur in particular after switching off the screening machine, brakes and thus prevents excessive swinging and damage. With the usual helical compression springs sufficient damping is not possible. The consequences of this are increased noise, possible vibration fractures on the railing, power cables or channels as well as damage to the machine itself.
    It is therefore an object of the present invention to provide a screening machine, which is better damped compared to the substructure and the environment and thus produces significantly fewer vibrations and noise.
    This object is achieved according to the invention by the features specified in the claims 1 and 9 features. Further embodiments of the invention will become apparent from the dependent claims.
    It is proposed to equip the screening machine with a vibration damping system on which the machine body is mounted, wherein the vibration damping system comprises at least one air bellows. Bellows have compared to helical compression springs much better damping properties and can therefore fix the above-mentioned disadvantages of helical compression springs.
    The air bellows according to the invention are preferably arranged in such a way that they essentially absorb the forces acting in the vertical direction.
    The bellows can be designed in principle as a single, double or multiple bellows.
    In screening machines, the machine body are mounted on several bellows, the individual bearings can be designed differently. Thus, e.g. the number or type of bladders will vary from store to store. A bearing may e.g. two bellows, another on the other hand, only one bellows. A bearing may e.g. also have a double bellows, while another camp comprises only a single bellows.
    The or the bellows are preferably permanently connected to a pressure source. This has the advantage that the pressure prevailing in the bellows pressure can also be changed during operation of the screening machine. Thus, it is possible to increase or decrease the damping of at least one pneumatic bellows during operation, to adjust the working height of the screening machine or to change the inclination of the screening machine. Alternatively, the height of the screening machine at a contact point could be kept constant, even if the weight increases or decreases at this point in the course of operation. The appropriate adjustment of the pressure can be done either automatically or by hand.
    According to a preferred embodiment of the invention, the screening machine comprises a control or regulation with which the pressure in at least one pneumatic bellows during operation of the machine is automatically adjustable. In a screening machine with multiple bellows, the pressure is preferably adjustable individually or in groups. In the latter case, for example, the air bladders located on a first side (e.g., the feed side) of the sifting machine and the air bladders on a second side (e.g., the discharge side) of the sifting machine may be co-pressurized.
    The bellows can be filled with air or another gas, for example.
    According to a preferred embodiment of the invention, the screening machine comprises a plurality of air bellows, which are arranged with respect to a central cross-sectional plane of the screening machine on different sides of the machine body of the screening machine.
    The machine body of the screening machine is preferably mounted at least four points on Luftbälgen.
    In a screening machine with a plurality of bellows these are preferably arranged on the two longitudinal sides of the machine body of the screening machine, wherein they are preferably arranged symmetrically with respect to a longitudinal center axis.
    An inventive screening machine preferably comprises at least one side guide, which limits a movement of the screening machine in the lateral direction. According to a preferred embodiment of the invention, side guides are provided on both longitudinal sides of the screening machine.
    Since the machine body of the screening machine is mounted on one or more Luftbälgen, an additional brake, as is customary in screening machines with helical compression springs, no longer required.
    The invention will be explained in more detail by way of example with reference to the accompanying drawings. Show it:<Tb> FIG. 1 <SEP> is a side view of a machine body of a sifting machine mounted on bellows;<Tb> FIG. Fig. 2a is a cross-sectional view of the screening machine of Fig. 1 at a first position;<Tb> FIG. Fig. 2b is a partial sectional view of the screening machine of Fig. 1 at a second position; and<Tb> FIG. 3 <SEP> is a schematic representation of a control device for adjusting the pressure in the air bellows.
    Fig. 1 shows a side view of a screening machine 1 for dewatering sand. The sifting machine 1 comprises a machine body 14 which is offset from the horizontal by a predetermined angle, e.g. 3 ° to 5 ° is inclined. The machine body 14 is driven by a drive 7, which in the example illustrated comprises two electric motors and which generates a vibrating or oscillating movement in the direction of the arrow A. The direction of the vibrating or oscillating movement is approximately at an angle of 45 ° relative to the horizontal.
    The screening machine 1 shown has a feed side 2, at which the feed material such. Sand is introduced into the machine body 14. Driven by the shaking movement, the feed material moves on the bottom of the machine body 14 upwards in the direction of the discharge side 3. During the transport of the bulk material in the direction of the discharge side 3, it loses water and thus becomes drier. The partially dried bulk material is then removed on the discharge side.
    The screening machine 1 shown in Fig. 1 is mounted at four points on Luftbälgen 4. However, more or fewer bearings 4, 5 could also be provided. In the illustrated embodiment, two bearings 4, 5 are located on each longitudinal side of the machine body 14, wherein a respective bearing on the task side 2 and a bearing on the discharge side 3 is arranged. The bearings 4, 5 are preferably designed symmetrically with respect to a central longitudinal sectional plane. On the task side 2 and the discharge side 3, the bearings 4, 5 are dimensioned differently strong. Since the weight of the bulk material at the discharge side 3 is greater than at the delivery side 2, the bearings 4, 5 are dimensioned larger here than at the delivery side 2.
    Each bearing 4, 5 comprises at least one air bladder 4, which dampens the forces occurring during operation of the screening machine 1, and a spring bracket 5, on which the air bladder 4 is seated. On the task side 2 each a double bellows 4 is provided on the two longitudinal sides of the machine body 14. On the discharge side 3, on the other hand, on each longitudinal side of the machine body 14, there are two double bellows arranged side by side. At each bearing 4.5 a side guide 6 is further provided, which can be seen even more clearly in Fig. 2a. This essentially comprises a guide part formed on the machine body 14, which is guided along a lateral stop provided on the spring bracket 5 which limits the swinging-out of the screening machine 1 in the lateral direction.
    In a loss of air in one of the bellows 4, the screening machine 1 sets on a spring bracket 5.
    Fig. 2b shows a cross-sectional view of another part of the screening machine 1 with the drive 7 and a bearing 4, 5 with a double bellows 4. The drive 7 in this case comprises two electric motors which drive the machine body 14 and thereby a linear movement in Direction of the arrow A (see Fig. 1) generate.
    Fig. 3 shows a schematic representation of a control or regulating device for adjusting the air pressure in the bellows 4a, 4b. The device comprises an air pressure source 9, e.g. a compressor, which is connectable via valves 10 with one or more of the bellows 4a, 4b. In the illustrated embodiment, the bellows 4a, 4b are firmly connected to the air pressure source 9. Alternatively, they could be connected to an air pressure source 9 only when needed.
    After assembly of the bellows they are inflated by means of compressed air to a desired working height. The working height can be different on the feed side 2 as on the discharge side 3 of the screening machine 1. By choosing the air pressure can be both the working height and on the other hand, the inclination of the screening machine 1 vary.
    The apparatus shown in Fig. 3 further comprises a control unit 11 with a control or regulating software, by means of which the pressure prevailing in the bellows 4a, 4b pressure during operation of the machine 1 can be changed automatically. Thus it is e.g. possible to automatically increase the damping of at least one air bladder 4 during operation, to reduce or to keep constant, to adjust the working height of the screening machine 1 or to keep constant or to change the inclination of the screening machine 1 or to keep constant. So could e.g. The working height of the screening machine 1 are kept constant at least one support point, even if the weight increases or decreases at this point in the course of operation.
    In order to fill the bellows 4a, 4b, the valves 10 are opened by the control unit accordingly and closed again when a target pressure is reached. The valves 10 are this controlled via control lines from the controller 11. The pressure prevailing in the bellows 4 a, 4 b is measured by means of pressure gauges 12 whose measured data are evaluated by the control unit 11. If necessary, air can be released from the bellows 4a, 4b. For this purpose exhaust valves 13 are provided, which are controlled by the control unit 11 accordingly.
    With the device shown in Fig. 3, it is thus possible to automatically adjust the air pressure in individual bellows 4a, 4b during operation of the screening machine. Depending on the design, the air bellows can be pressurized individually or in groups or reduced in pressure. The air bladders located on one side (e.g., feed side 2 or outflow side 3) are preferably each connected to a common pneumatic circuit and are inflated to the same air pressure. Alternatively, however, each air bellows 4 could be individually pressurized. In this case, each air bladder 4 would have to be e.g. have their own shut-off valve 10 or possibly also its own air pressure source 9.
    权利要求:
    Claims (14)
    [1]
    1. Screening machine (1) for classifying or processing bulk material, in particular of gravel or sand, with a drive (7) for generating a shaking movement of a machine body (14), characterized in that the machine body (14) of the screening machine (1) on a vibration damping system, comprising at least one air bellows (4) is mounted.
    [2]
    2. Screening machine (1) according to claim 1, characterized in that the at least one air bellows (4) is arranged such that it substantially absorbs the forces acting in the vertical direction.
    [3]
    3. screening machine (1) according to claim 1 or 2, characterized in that a plurality of air bellows (4) are provided with respect. A middle cross-sectional plane (8) on different sides of the machine body (14) of the screening machine (1) in the longitudinal direction and are arranged behind the cross-sectional plane (8).
    [4]
    4. Screening machine (1) according to one of the preceding claims, characterized in that a device (9-13) for filling the at least one air bellows (4) or the bellows (4) is provided, by means of which the pressure in the at least one air bellows or the bellows (4) is adjustable to different heights.
    [5]
    5. screening machine (1) according to claim 3, characterized in that the machine body (14) of the screening machine (1) on a plurality of bellows (4) is mounted, wherein the bellows (4) on both longitudinal sides of the machine body (14) of the screening machine ( 1) are arranged symmetrically.
    [6]
    6. Screening machine (1) according to one of claims 1 to 2, characterized in that the at least one air bellows (4) or the air bellows (4) is designed in each case as a single, double or multiple bellows.
    [7]
    7. Screening machine (1) according to claim 4, characterized in that the vibration damping system comprises a control or regulating device (11), with which the pressure in the at least one air bellows (4) or the plurality of bellows (4) during operation of the Sieving machine (1) can be varied automatically.
    [8]
    8. screening machine (1) according to any one of the preceding claims, characterized in that on both longitudinal sides of the machine body (14) of the screening machine (1) a side guide (6) is provided.
    [9]
    9. vibration damping system for a screening machine (1) according to one of claims 1 to 8, characterized in that the vibration damping system comprises at least one air bellows (4).
    [10]
    10. vibration damping system according to claim 9, characterized in that the at least one air bladder (4) to the machine body (14) can be arranged such that it absorbs substantially the forces acting in the vertical direction.
    [11]
    11. vibration damping system according to claim 9, characterized in that it comprises a plurality of air bellows (4), with respect to a central cross-sectional plane (8) of the machine body (14) of the screening machine (1) on different sides in the longitudinal direction in front of and behind the cross-sectional plane (8) can be arranged.
    [12]
    12. vibration damping system according to one of claims 9 to 11, characterized in that it comprises a device (9-13) for filling the at least one air bladder (4) or the air bellows (4), by means of which the pressure in the at least one air bladder ( 4) or the bellows (4) is adjustable to different heights.
    [13]
    13. Vibration damping system according to claim 9, characterized in that the at least one air bellows (4) or more air bellows (4) is designed in each case as a single, double or multiple bellows or are.
    [14]
    14. Vibration damping system according to claim 12, characterized in that it comprises a control or regulating device (11) with which the pressure in the at least one pneumatic bellows (4) or the plurality of bellows (4) can be automatically varied during operation.
    类似技术:
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    同族专利:
    公开号 | 公开日
    CH706283A2|2013-09-30|
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    引用文献:
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    DE102013107973B3|2013-07-25|2014-05-15|SIBRA-Tec GmbH|Device for wet or dry fine classifying of pourable bulk material i.e. metal ores, has fabric tensioned by clamping device, so that fabric rests on contact bar by contact strip that is mounted on support panel on drive bridge|
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    法律状态:
    2015-08-28| PUE| Assignment|Owner name: STEINHAUS GESELLSCHAFT MIT BESCHRAENKTER HAFTU, DE Free format text: FORMER OWNER: SIMATEC SIEBMASCHINENTECHNIK GMBH, DE |
    2020-10-15| PFA| Name/firm changed|Owner name: STEINHAUS GESELLSCHAFT MIT BESCHRAENKTER HAFTU, DE Free format text: FORMER OWNER: STEINHAUS GESELLSCHAFT MIT BESCHRAENKTER HAFTUNG, DE |
    优先权:
    申请号 | 申请日 | 专利标题
    DE202012003315U|DE202012003315U1|2012-03-30|2012-03-30|Sieving machine for classifying or processing gravel, sand or the like|
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