• 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:
    The invention relates to a switching unit (3) for selectively connecting a central line (1) of a pneumatic conveyor line with a single line from a group of multiple stubs (2), wherein planar parts (3.1, 3.2) are held movably guided together, wherein a flat part (3.1) is held immovable and has a plurality of holes (3.1.1) with connection points for each stub line (2), wherein the second flat part (3.2) has only a single bore (3.2.1) which in a cavity (3.6) opens, to which the central line (1) can be connected, wherein by displacement movement of the second planar part (3.2) the bore (3.2.1) to each one bore (3.1.1) from the plurality of holes can be aligned on the first surface part (3.1). The junction (3.3.1) of the cavity (3.6) to the central line (1) is fixed against translational movement.
    公开号:AT513148A4
    申请号:T8202012
    申请日:2012-07-23
    公开日:2014-02-15
    发明作者:Johann Kalkgruber；Johann Ing Grossauer；Johann Hinterplattner
    申请人:Solarfocus Holding Gmbh；
    IPC主号:
    专利说明:

    July 23, 2012 14:07 LAWFIRM 0732 773410 6
    No. 6959 p. 5/15
    S2316
    Switching unit for a pneumatic conveying line
    The invention relates to a switching unit for selectively connecting a central line of a pneumatic conveyor line with a single line from a group of multiple stubs.
    An important application for the switching unit according to the invention is a pneumatic conveying line for the transport of particulate or dust-like fuels, in particular fuel pellets from a storage space to a furnace.
    The AT 507 742 Bl shows an example of a pneumatic conveying line for the transport of particulate or dust-like fuels, in particular fuel pellets from a storage room to a furnace. The pneumatic conveying line comprises several suction probes, a switching unit, a pump, a solids separator and a system of pipe or hose lines. The suction probes are used to introduce pellets from the storage room into a suction line. They are arranged at the bottom of the storage room and supplied with one supply air stub and one suction stub. At a suction probe air flows from the connected supply air stub line into the storage room and from there into the suction stub connected to the suction probe. The air entrains pellets from the storage room into the suction stub pipe. You need forcibly several suction probes to be able to suck pellets from the whole floor space of the storage room. In operation, one sucks but only from one suction probe. If there are no pellets left on this suction probe, you are sucking from another suction probe that still contains pellets. One does not want to connect all branch lines with suction probes directly to lead to central parts of the system heating system, that would be nonsensical expensive and space consuming. Instead, all stub lines are allowed to terminate at a switching unit which is mounted as close as possible to the storage space, for example, on the wall of the storage room, and leads only to two central lines 23/07/2012 14:12
    Page 1 Nr .: R262 P.005 / 015 23.July 2012 14:08 LAWFIRM 0732 773410 6
    No. 6959 p. 6/15. * ·. ··· ··· · * · · «·. • ··· · · · ..
    S2316 gen / a supply air line and a suction line to other parts of the system, In operation of the system, the switching unit connects the two central lines with the respective two lines leading to the only active suction probe.
    In EP 1 052 456 B1, a design for a switching unit of that common type is described in which the switching unit has two parallel, mutually slidably held flat parts, wherein a planar part has a plurality of holes with connection points for a plurality of stubs and the second flat part only two holes with connection points for the two central lines (supply air line or suction line). By the two flat parts are moved against each other, the holes to which the central lines are connected, can be positioned in alignment with a respective hole of a pair of holes to which the pair of stubs leading to a single suction probe is connected, with only one Suction probe is connected to the central lines and not a single further suction probe. By construction methods of this type is much better than with other valve arrangements achievable that the flow in the lines can flow as evenly as possible and eddy-free. Instead of a single switching unit with two terminals for each central line you can of course also use two Umschalteinheiten, with each switching unit only a single central line is connected. In the switching unit described in EP 1 052 456 B1 both central lines are connected to a single switching unit and the two said flat parts are to be displaced by a rotary movement against each other. Usually that flat part to which the plurality of stubs is connected immovably fixed. For the switching of connections, that planar part is moved to which only one or two central lines are connected. 23/07/2012 14:13
    Page 2 No .: R262 P.006 / 015 23. July 2012 14:08 LAWFIRM 0732 773410 6
    No. 6959 p. 7/15
    S2316
    Since this means that the central lines must be movable in the longitudinal area adjoining the switching unit, they are designed as a flexible hose, at least in this longitudinal area. This flexible, " free " movable longitudinal area brings with it limitations. The curvature may only be very small, otherwise the pellets would crumble too much when they hit the tube walls and the tube itself would soon be destroyed as well. Due to the low permissible curvature, the space requirement is disturbingly large.
    Based on this state of the art, the object underlying the invention is to provide a transfer unit for selectively connecting a central pipeline of a pneumatic conveying line to a single line from a group of multiple branch lines. In at least equally good operation, the new switching unit to be created, taking into account the space requirements of the lines to be connected thereto, should have a smaller space requirement than the discussed switching units according to the prior art.
    To solve the problem, it is assumed that a construction in which the ümschalteinheit has two parallel to each other, slidably held flat parts, wherein a flat part is held rigid and has a plurality of holes with connection points for a plurality of stubs and wherein the second planar Part having only a single bore, which opens into a cavity, to which the central line is connected, wherein the second planar part is slidably held relative to the first planar part and by sliding the one bore of the second planar part to a respective bore from the Can be aligned in a plurality of holes on the first surface part in alignment. 23/07/2012 14:13
    Page 3 Nr .: R262 P.007 / 015 23. July 2012 14:08 LAWFIRM 0732 773410 6
    No. 6959 p. 8/15
    S2316 as an improvement according to the invention, it is proposed to form the connection point of the cavity to the central line fixed against translational movement.
    This measure, which is easy to implement in itself, ensures that no line has to be deformed when switching over by the switching unit. All surfaces involved in the flow guidance can thus be made smooth and made of very strong material, whereby narrower line curvatures than in the previously known constructions can be realized without causing negative consequences and thus reducing space requirements.
    The invention will be illustrated with reference to a drawing of an advantageous, specific embodiment before being explained within the scope of the invention, possible modifications and generalizations.
    Fig. 1: shows a lateral partial sectional view stylized an exemplary, advantageous switching unit according to the invention including connected line sections.
    According to the device of FIG. 1, a central line 1 can be selectively connected to one of three stub lines 2 by a switching unit 3.
    The stub lines 2 are each connected to a hole 3.1.1 through the fixed surface portion 3.1 of the switching unit 3. The individual bores 3.1.1 lie on a circular line about a rotation axis 3.5 around which the second planar part 3.2 of the switching unit 3 is rotatable relative to the stationary planar part 3.1.
    The second planar part 3.2 has at the same radial distance from the axis of rotation 3.5 only a single bore 3.2.1. This bore leads into the cavity 3.6, which is the interior of the tube 3,3. The end of the pipe facing away from the flat part 3.2 3.3 23/07/2012 14:14
    Page 4 No .: R262 P.008 / 015 23.July 2012 14:09
    No. 6959 p. 9/15 LAWFIRM 0732 773410 6 * * i ·· «+ * · ·« f 32316 * ·· ··· • · · · · * * * · ** · M «· # forms next to the hole 3.2.1 the second opening 3.3,1 of the hollow space 3.6.
    In the illustrated embodiment, the two flat parts are 3.1 / 3.2 by relative rotation about the axis of rotation 3.5 against each other. By the end of the tube 3.3 facing away from the planar portion 3.2 and thus opening 3.3.1 of the cavity 3.6 is positioned exactly coaxially about the axis of rotation 3.5, this opening is then not moved / if the position of the flat part 3.2 relative to the flat part 3.1 is changed when changing from a stub 2 to another stub 2. At the opening 3.3.1 is the open end of the continuing, designed as a pipeline, central line 1 at.
    In the illustrated embodiment, the latter end portions of the tube 3.3 and the conduit 1 are held against lateral deflection by a funnel-shaped shell 3.4, which is rigidly connected to the sheet-like part 3.2 and comprises said end portions on the lateral surface of the pipes.
    It is clear from the drawing that when switching the connection from the line 1 to a spur line 2 on a different spur line 2 no line part needs to be deformed, but only the pipe 3.3 as a whole needs to be rotated about the rotation axis 3.5. Nevertheless, there is no reduction in the flow cross-section or a sudden change in the direction of flow on the entire flow path through the lines 2, 3.3, 1 and through the bores 3.1.1, 3.2.1 nor to a forward or receding edge. Nevertheless, except with tubes, the Auslangen can be found, thus rule best flow conditions.
    As with the devices according to the prior art, the rotational movement of the flat part 3.2 and the parts rigidly connected thereto are normally driven by a mechanical device that can be addressed by a controller. In this regard, the device according to the invention offers comparable starting 23/07/2012 14:14
    Page 5 No.: R262 P.009 / 015 23. July 2012 14:09 LAWFIRM 0732 773410 6
    No. 6959 p. 10/15
    conditions with devices according to the prior art. For example, for the drive of the planar part 3.2 to rotary motion, a shaft part of the flat part 3.2 of coaxial with the axis of rotation 3.5 through a central hole in the flat part 3.1 extend through a drive unit, which on the side of the stubs 2 on the flat part 3.1 is attached.
    To modifications and generalizations with respect to the construction shown in Fig. 1 should be mentioned
    The flow direction through the holes 3.1.1 and the bore 3.2.1, the flat parts 3.1, 3.2 need not be aligned as shown parallel to the axis of rotation 3.5. In an advantageous embodiment, it is inclined from the end region of the respective affected stub out at a very acute angle slightly to the axis of rotation 3.5 out. This makes it achievable that the tube 3.3 need not have an S-double curvature as shown, but only a single, for example circular arc-shaped curvature needs. This is advantageous with respect to the manufacturing process and with regard to the flow behavior. In order to align the flow direction accordingly, the connection points for the stub lines 2 do not have to be oriented parallel to the axis of rotation 3.5 as shown, but at an acute angle thereto, the end faces of the stub lines 2 being closer to the axis of rotation 3.4 than the parts of the stubs adjoining the end faces second
    Instead of providing a funnel-shaped shell 3.4 as a lateral support for the pipe 3.3 and the central conduit 1, it is also possible, for example, to make the pipe 3.3 particularly rigid and to provide an enclosure for the lateral surface of the conduit 1 at the end region thereof.
    The funnel-shaped shell 3.4 can also be replaced by a framework which is rigidly connected to the flat part 3.2. For example, this scaffolding can be completed by three struts and one 23/07/2012 14:14
    Page 6 No .: R262 P.010 / 015 23.July 2012 14:09 S23L6 LAWFIRM 0232 773410 6 ·· * ··· • * · · · t V it «• V 41 ·« • f * ♦ · · ♦ ·· ·
    No. 6959 p. 11/15 * · · * «· · · · ·· ··· • ·« • · *
    Ring be formed, wherein the three struts from the flat part 3.2 projecting to the end portion of the line 1 and wherein the ring comprises the end portion of the conduit 1 and the pipe 3.3.
    In particular, at the air supply side of a pneumatic conveying path, ie at that part of the conduit system in which only air but no material to be transported is moved, one can apply a construction which differs from the construction shown in Fig. 1 in that the tube 3.3 is omitted. Instead of the cavity 3.6, which is the Innenxaum of the tube 3.3, then enters the enclosed by the funnel-shaped shell 3.4 cavity.
    In the example shown in Fig. 1, the sheet-like parts 3.1, 3.2 are mutually displaceable by rotational movement. This results in simple conditions.
    The idea of the invention can also be implemented in designs of change-over units in which the planar parts which serve to switch from one stub to another stub are displaceable along an arbitrary curve, in a cavity which passes through the fixed surface Part (3.1) to which the branch lines are connected and is limited by further surfaces (3.4), the movable flat part (3.2) is to be arranged on the fixed flat part so that it is movable against the fixed planar part of this guided. One of said further surfaces (3.4), which delimit the cavity, is provided with an opening, to which the continuing central line is to be connected. 23/07/2012 14:15
    Page 7 No .: R262 P.011 / 015
    权利要求:
    Claims (10)
    [1]
    July 23, 2012 14:10 LAWFIRM 0732 773410 6 No. 6959 p. 12/15 «· · · · · · · ·« · · · «♦ · ·« «« «« «« «« 1. Switching unit (3) for selectively connecting a central line (1) of a pneumatic conveyor line with a single line of a group of multiple stubs (2), wherein the switching unit (3) has two mutually parallel, guided guided guided slidably flat parts (3.1, 3.2), wherein a flat part (3.1) is held immobile and a plurality of Holes (3.1,1) with connection points for each stub line (2), wherein the second planar part (3.2) has only a single bore (3,2.1), which opens into a cavity (3.6), to which the central line (1) is connectable bar, wherein by sliding movement between the planar parts (3.1, 3.2) which opens into the cavity (3.6) opening bore (3.2,1) to each one bore (3.1.1) of the plurality of holes on the first surface part (3.1) aligned, characterized in that the connection point (3.3, 1) of the cavity (3.6) to the central duct (1) is fixed against translatory movement.
    [2]
    Second switching unit (3) according to claim 1, characterized in that it comprises wall surfaces (3.4) which are rigidly connected to that sheet-like part (3.1) to which the stub lines (2) are connected, that the wall surfaces (3.4) a Limiting cavity and that the central line (1) is connected to an opening in the wall surfaces (3,4),
    [3]
    Third switching unit (3) according to claim 1 or claim 2, characterized in that the flat parts (3.1, 3.2) by rotation about an axis of rotation (3.5) are mutually displaceable. 23/07/2012 14:15 Page 8 No.: R262 P.012 / 015
    July 23, 2012 14:10 LAWFIRM 0732 773410 6 Nr, 6959 S. 13/15 • * * · «* i · · · * * * * * * * * * t * ·» 52316 • ·· «« * «·» · T • ·· * · * • · · • · · · · * f · M ♦ * ·
    [4]
    4. Switching unit (3) according to claim 3, characterized in that / the opening of the cavity at which the central Lei " tion (1) is coaxially aligned around the axis of rotation (3.5).
    [5]
    5. switching unit (3) according to claim 4, characterized in that the body limiting the cavity is a funnel-shaped shell (3.4).
    [6]
    6. switching unit (3) according to claim 4, characterized in that the cavity (3.6) enclosing body is a tube (3.3), which is fixed to that sheet-like part (3.2), which only one bore (3.2.1) having.
    [7]
    7. ümschalteinheit (3) according to claim 6, characterized in that the tube (3.3) by a funnel-shaped shell (3.4) is surrounded.
    [8]
    8. switching unit (3) according to one of claims 3 to 8, characterized in that the orientation of the through one of the bores (3.1.1) in the said cavity extending into the flow channel is inclined at an acute angle to the axis of rotation (3.5) ,
    [9]
    9. switching unit (3) according to one of claims 1 to 8, characterized in that it is part of a system for the transport of particulate or dust-like fuels from a storage room to a furnace.
    [10]
    10. ümschalteinheit (3) according to claim 9, characterized in that the fuels are fuel pellets. Page B 23/07/2012 14:15 No .: R262 P. 013/015
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    同族专利:
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    AT513148B1|2014-02-15|
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    引用文献:
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    GB1382347A|1971-02-16|1975-01-29|Neu Sa|Distributor for flowing fluids or particulate material|
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    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    AT8202012A|AT513148B1|2012-07-23|2012-07-23|Switching unit of a pneumatic conveying line|AT8202012A| AT513148B1|2012-07-23|2012-07-23|Switching unit of a pneumatic conveying line|
    EP20130177396| EP2690362A2|2012-07-23|2013-07-22|Switching element for a pneumatic transport system|
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