• 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:
    It is a device for separating coarse grain and smaller grain sizes with a screening line (2) of spaced juxtaposed in the conveying direction (3, F) of the coarse grain aligned, vibratory sieve bars (4, 4 '), which are associated with a carrier (5) and with a conveyor for the grain. In order to provide advantageous screen ratios, it is proposed that at least two groups of screen bars (4, 4 ') connected to the carrier (5) are assigned to the carrier (5), of which at least one group is connected via a coupling device (9 ), is supported in such a manner that it is capable of oscillation such that adjacent screen bars (4, 4 ') assigned to a different group can be vibrated in parallel with each other by a vibration drive (7) in the screen passage direction (8).
    公开号:AT516406A4
    申请号:T50367/2015
    申请日:2015-05-06
    公开日:2016-05-15
    发明作者:
    申请人:Rubble Master Hmh Gmbh；
    IPC主号:
    专利说明:

    The invention relates to a device for separating coarse grain and smaller grain sizes with a sieving stretch of spaced juxtaposed, optionally in the conveying direction of the coarse grain falling, vibratory sieve bars, which are associated with a carrier and with a conveyor for the grain.
    Such devices are particularly od crushers or screens od. Like. Associated, which are provided for crushing lumpy feed material to smaller grain sizes in the coarse to medium size range. They are used in particular for the production of broken minerals from stones or building waste. In order to be able to effectively preseparate certain smaller material grains from the material to be crushed, a feed unit is arranged upstream of the crusher, into which the crushed material, for example with an excavator, can be placed. Known Zufördereinheiten are usually Vibrorin-nen or slats and separate heavy screens that form two separately drivable machines that have a large height and length, which in particular for the transport of such devices has disadvantages. Heavy screens are usually designed as mechanically, electrically, hydraulically or the like. Driven vibrating screens, with which although a clean separation of coarse grain and smaller grain sizes can be achieved, but are expensive to manufacture, have a large footprint and must always be supplied with energy why they cause high maintenance costs.
    Known, built into a Vibrorinne Siebstrecken work in terms of achievable Sieber result insufficient. Their advantage, however, lies in the lower required machine height, the lower weight, the lower price and the simplicity of the construction, which is why the disadvantages in the sieving result are often accepted.
    According to DE 38 34 381 A1, a separation of coarse grain of smaller grain fractions by means of a sieve is carried out by far from each other juxtaposed, sloping in the conveying direction of the coarse grain sieve bars. In the known sieve two rows of screen bars are stacked but offset from one another. The screen bars are clamped on one side in a carrier and are set in motion by the screenings. The coarse grain is guided during the screening process in the direction of Siebstablängsachsen on the screen and the fine grain trickles transversely through the sieve. However, during the sieving process, the sieve bars are displaced from the screenings to vibrations required for a good sieving process only in those areas of the sieve in which a sufficient amount of sieved material is passed over the sieve, whereas the sieve bars of the other areas are hardly excited to vibrate and thus with such a device only a poor screening effect can be achieved. In order to improve this, it has been proposed (AT 411 577 A1) to store the rod-shaped carrier in a frame so as to be resilient about its longitudinal axis running transversely to the screen bars and to arrange the screen bars in at least two rows following one another in the conveying direction of the coarse grain.
    The invention is therefore an object of the invention to provide a device of the type described above, which combines the advantages of integrated in a vibrating trough Siebstrecke and downstream of a Vibrorinne, separately driven, Schwersiebes, thus delivering good sieving results at a reduced size.
    The invention achieves this object by virtue of the fact that at least two groups of screen bars connected to the carrier are assigned to the carrier, of which at least one group is mounted so as to be oscillatable via a coupling device such that adjacent ones assigned to a different group,
    Siebstäbe with a vibratory drive in Siebdurchlassrichtung parallel to each other are vibration excitable.
    Thus, it is possible to provide a device of the type described above, which combines the advantages of a built-in vibratory trough Siebstrecke with those of a Vibrorinne downstream, separately driven, heavy sieve, so good sieve results at a reduced size delivers. By means of the measures according to the invention, relative movements between adjacent screen bars which loosen relative movement of the material to be screened, loosen adhering parts to grains, promote the transport of smaller grain sizes through the screen, that is, screening, and thereby increase the efficiency of the device. In addition, it prevents the formation of the sieve blocking Steckkorn. This is also improved prevented when the distance between each adjacent screen bars increases in Siebdurchlassrichtung and / or when the distance between adjacent screen bars in the conveying direction increases, or if the screen bars in cross section T, wedge-shaped. Like. Are formed. The screen bars can also be formed by profiles, which are optionally wave-shaped in the respective support plane of the screen bars.
    The carrier is associated with two or more groups of screen bars, each group forming a screen deck connected separately to the carrier. Particularly simple and robust construction conditions result for such, for example, a crusher associated devices, when a group is coupled directly to the carrier, so practically formed carrier-resistant, and when the other group is indirectly connected via a coupling device to the carrier. However, both groups could also be indirectly connected to the carrier via separate coupling devices. The movable screen deck is mounted on one or both sides of springs on the carrier, so that between the adjacent screen bars in operation vibration amplitude of, for example, up to 30mm can be achieved. The Siebdecklagerung can be designed such that the screen bars can perform a torsional vibration, a parallel displacement or a combination of both movements with respect to the adjacent screen bars.
    In any case, vibration-excited screen bars move in the screen passage direction parallel to one another. The type of suspension will be chosen according to the purpose of use. For example, steel springs, rubber springs, rubber-metal buffers, spring-damper systems are used, wherein the transfer function of the spring damper device is preferably adjustable.
    The spring characteristic or the transfer function of the spring damper device is preferably chosen to be highly progressive in order to limit the amplitude at higher frequencies. At low frequencies (= zero promotion) the relative movement between the soils should be negligible. When the frequency is increased, the relative movements initially increase sharply, after which they should be kept as constant as possible in the upper frequency range. In particular, adjacent screen bars oscillate at the same frequency if they are vibrationally excited by one and the same vibratory drive, but phase-shifted.
    In order to prevent the wedging of platy material and / or reinforcing steels between adjacent screen bars, the more immobile, in particular rigidly connected to the support group consisting of standing flat steel and the other group of screen bars with T-profile cross-section, or tapering in Siebdurchlassrichtung or wavy shaped profiles.
    Although it is possible to provide a separate oscillatory drive for the screen bars which can be moved relative to one another in the screen passage direction. Thus, in the case of unsatisfactory sieving results, an eccentric or imbalance drive assigned to the group can be provided which, however, can be significantly smaller than in the case of known drives and which is preferably likewise installed on the vibrating chute like the conveying device. If the vibration drive but formed by the conveyor, so no additional drive is required and the screen deck vibrates with the vibrating chute. Neighboring screen bars then vibrate at excitation by the vibratory drive of different amplitude and phase shifted. The conveyor may be a linear conveyor, in particular an imbalance drive.
    In order to optimize the amplitude and the shear function between adjacent screen bars, the bearing distances of the screen decks and the output slope of the screen decks can be adjusted to one another with an adjusting device.
    In order to reduce the wear and not to let large chunks rest directly on the sieve gaps, a solid profile, such as a square steel profile can be at least on the rigid screen bars be doubled. Preferably, each adjacent screen bars are assigned to different support levels in the resting state.
    In order to further increase the efficiency of the preliminary screening, the screening line can consist of several individual cascades, arranged one behind the other in the conveying direction, of groups of screen bars.
    In the drawing, the subject invention is shown, for example. Show it
    1 shows a device according to the invention with vibrating chute and strainer section in plan view,
    2 shows the device from FIG. 1 in section along the line II-II, FIG.
    3 shows the device from FIG. 2 in section along the line III-III, FIG.
    4 shows the device of FIG. 2 in section along the line IV-IV,
    5 is the Siebstrecke the device in an enlarged perspective view,
    Fig. 6 shows a design variant of the wire train of FIG. 5 with alternative coupling device and
    Fig. 7, the oscillatory group of screen bars with associated coupling device of FIG. 6 without a carrier.
    The device for separating coarse grain and smaller grain sizes comprises a vibrating chute 1, that is to say a chute with a conveyor for the grain fed into the chute and a screening line 2 of spaced apart juxtaposed vibrating sieve bars 4 aligned in the conveying direction 3 of the coarse grain and falling thereby. 4 ', which are assigned to a carrier 5.
    The carrier 5 are two, associated with the carrier 5, groups of screen bars 4, 4 'assigned, of which one group is mounted via a coupling device 9, such oscillatory relative to the carrier 5, that adjacent, the other group associated with sieve bars 4th , 4 'are vibration-excitable parallel to each other with a vibratory drive 7 in Siebdurchlassrichtung 8.
    In particular, the carrier 5 is associated with two groups of screen bars 4, 4 ', of which each group forms a screen deck connected to the carrier via a separate coupling device. The screen decks have the different natural vibration frequencies, with the result that the screen bars 4, 4 'of the two screen decks mesh against each other during operation. In the present embodiment, the carrier is associated with two groups of screen bars, wherein the one group is coupled directly to the carrier, ie directly vibrates with the assembly of Vibrorinne 1 and Siebdeck and the other group via a coupling device 9, a spring-damper element, indirectly with the carrier 5 is connected and resonates.
    The vibration drive 7 is formed by the conveyor, wherein the conveyor is a linear conveyor, namely an imbalance drive is. Characterized in that the screen bars 4, 4 'are formed in cross-section T-shaped, increases the distance a respectively adjacent screen bars in Siebdurchlassrichtung eighth
    In Fig. 2 is indicated by dashed lines that each adjacent screen bars 4, 4 'in the resting state different support levels Ε-ι, E2 can be assigned. One of the groups of screen bars 4 engages via a spring damper device, the coupling device 9, on the carrier 5, whose transfer function is preferably adjustable by adjusting the spring constant and / or the damping characteristic.
    The Siebdecklagerung can be designed such that the screen bars can perform a torsional vibration, a parallel displacement or a combination of both movements (Fig. 5) relative to the adjacent screen bars.
    In the exemplary embodiment according to FIGS. 6 and 7, the oscillatable group of screen bars 4 is mounted on the carrier 5 via the associated coupling device 9 such that the bearing shown in FIG. 7 essentially allows torsional vibrations and prevents or greatly dampens linear vibrations. On the other hand, the left bearing essentially causes a vibration around a circular path to the center of which lies in the region of the right-hand bearing axis and whose radius corresponds to the distance between the left and the right bearing.
    权利要求:
    Claims (10)
    [1]
    1. An apparatus for separating coarse grain and smaller grain sizes with a screening line (2) of juxtaposed, in the conveying direction (3, F) of the coarse grain oriented, vibratory sieve bars (4, 4 '), which are associated with a carrier (5) and with a conveying device for the grain, characterized in that at least two groups of screen bars (4, 4 ') connected to the carrier (5) are assigned to the carrier (5), of which at least one group is connected via a coupling device (9 ), is supported in such a manner that it is capable of oscillating, that respective adjacent screen bars (4, 4 ') assigned to a different group can be vibrated in parallel with each other by a vibration drive (7) in the screen passage direction (8).
    [2]
    2. Apparatus according to claim 1, characterized in that the one group directly to the carrier (5) coupled and the other group via a coupling device (9) is indirectly connected to the carrier (5).
    [3]
    3. Device according to claim 1 or 2, characterized in that the vibration drive (7) is formed by the conveyor.
    [4]
    4. Apparatus according to claim 3, characterized in that the conveyor is a linear conveyor, in particular an imbalance drive.
    [5]
    5. Device according to one of claims 1 to 4, characterized in that the distance (a) each adjacent screen bars (4, 4 ') increases in Siebdurchlassrichtung (8).
    [6]
    6. Device according to one of claims 1 to 5, characterized in that the distance of each adjacent screen bars (4, 4 ') in the conveying direction (3, F) increases.
    [7]
    7. Device according to one of claims 1 to 6, characterized in that the screen bars (4, 4 ') of profiles, in particular of T-profiles are formed, which optionally wave-shaped in the support plane (E-ι, E2) of the screen bars are.
    [8]
    8. Device according to one of claims 1 to 7, characterized in that each adjacent screen bars (4, 4 ') in the idle state different bearing levels (E-ι, E2) are assigned.
    [9]
    9. Device according to one of claims 2 to 8, characterized in that the coupling device (9) at least one of the groups of screen bars (4, 4 ') is formed by a on the engaging carrier (5) spring damper device whose transfer function is preferably adjustable.
    [10]
    10. Device according to one of claims 1 to 9, characterized in that the wire stretch of several, in the conveying direction (3, F) successively arranged individual cascades of groups of screen bars (4, 4 ').
    类似技术:
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    US347870A|1886-08-24|Screen
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    US1223005A|1917-04-17|Classifier for flour-mills.
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    同族专利:
    公开号 | 公开日
    EP3090817A1|2016-11-09|
    AT516406B1|2016-05-15|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    DE3834381A1|1988-10-10|1990-04-12|Gronholz Claus|Apparatus for comminuting and processing large-grained material|
    DE19944182A1|1998-09-19|2000-03-23|Gegenheimer Helmut|Sieve, e.g. for grinding material granules comprises numerous parallel sieve rods on frame, and vibrating unit|
    AT411577B|2002-09-19|2004-03-25|Hmh Engineering Consulting Tra|DEVICE FOR SEPARATING COARSE GRAIN AND FINE GRAIN|
    US3105815A|1961-03-27|1963-10-01|Simplicity Eng Co|Vibratory feeder|
    US5368167A|1991-10-22|1994-11-29|Edem Steel Ltd.|Vibrating conveyor screening method and apparatus|
    FR2714315B1|1993-12-27|1996-03-01|Gen Dechets Recyclabl Centre|Waste sorting device.|CN113305007A|2021-06-09|2021-08-27|廖进锋|Device for screening and removing flour cakes|
    法律状态:
    2017-05-15| HA| Change or addition of new inventor|Inventor name: GERALD HANISCH, AT Effective date: 20170404 |
    2017-05-15| PC| Change of the owner|Owner name: GERALD HANISCH, AT Effective date: 20170404 |
    优先权:
    申请号 | 申请日 | 专利标题
    ATA50367/2015A|AT516406B1|2015-05-06|2015-05-06|Device for separating coarse grain from smaller grain sizes|ATA50367/2015A| AT516406B1|2015-05-06|2015-05-06|Device for separating coarse grain from smaller grain sizes|
    EP16168079.8A| EP3090817A1|2015-05-06|2016-05-03|Device for separating coarse particles from smaller particles|
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