• 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 cover grate of a surface dewatering device, e.g. a drainage channel or a point drain. The cover grate comprises at least one group (1-3) of a plurality of slot-shaped openings (10, 10R), which are arranged parallel to one another and are separated by longitudinal webs (20) and extend in a direction transverse to a main liquid flow direction (X). To improve the absorption capacity, it is proposed that the peripheral openings (10R) facing the edges (11, 12) of the covering grate are wider than the openings (10) lying between the peripheral openings (10R).
    公开号:CH710523A2
    申请号:CH02052/14
    申请日:2014-12-30
    公开日:2016-06-30
    发明作者:Valdés Carlo；Lefèbvre Yves
    申请人:Aco Severin Ahlmann Gmbh & Co Kg；
    IPC主号:
    专利说明:

    The invention relates to a cover grate a Oberflächenentwässerungseinrichtung according to the preamble of claim 1.
    For dewatering of surfaces processes and in particular drainage channels are used, in which possibly also run dirty rainwater and through which this water can be derived. Then, when heavy rain events take place, not only results in a large amount of water to be discharged per unit time, and the flow rate of the discharged water increases. This is regularly based on a certain flow direction, which usually runs transversely to a laid gutter strand. It is important that the water does not shoot over the gutter due to a high flow velocity.
    From DE 3,147,139 A1 a "Ableitgitter" is known, in which the slot-shaped openings extend in a direction transverse to the direction of extension of a channel strand, ie parallel to a main liquid flow direction. Although the slit-shaped openings provided there are optimized in such a way that a high absorption capacity is ensured, a path over the gutter line is already opened up to the inflowing water through the direction of extension of the openings. This path leads over the transverse webs, which separate the openings from each other.
    From DE 20 2007 006 821 U1 a cover grate according to the preamble of claim 1 is known. Also, this cover grate has an insufficient absorption capacity.
    The invention is based on the object to further develop a cover grate of the type mentioned in that with reasonable material and design effort a high absorption capacity is guaranteed.
    This object is achieved by a cover grate according to claim 1.
    In particular, this object is achieved in a cover grate of a surface dewatering device, e.g. a drainage channel or a point drain, comprising at least one group of a plurality of slot-shaped openings arranged parallel to one another and separated by longitudinal webs which extend in a direction transverse to a main liquid flow direction, achieved in that edge-side openings facing edges of the cover grid are wider as the openings that lie between the peripheral openings.
    This asymmetrical design ensures that even at higher flow velocities, the water flow is "broken", ie does not overflow over the cover. As a result, the swallowing capacity of the grate is significantly improved, and thus maximizes the performance of the channel.
    The edge-side openings have inlet slopes on their edge edges, whereby a particularly effective flow, discharging water from the incoming stream happens.
    The longitudinal webs are preferably (slightly) higher than edge regions between the edges of the Abdeckrostes and the edge-side openings, whereby a further breaking of the water flow takes place.
    Preferably, a plurality of groups of openings are provided and separated by transverse webs. With relatively little effort so a high load capacity is ensured. In this case, the transverse webs preferably have notches in the regions between the openings. These notches cause the part of the water flowing over the transverse webs to swirl in the area between the openings and thus to reduce its velocity, which leads to an easier inflow of the water into the openings.
    The cover grate is preferably made of a metal casting, or made of plastic, which allows cost-effective production with high stability.
    Embodiments of the present invention will be explained in more detail with reference to figures. Hereby show:<Tb> FIG. 1 <SEP> is a top perspective view of a first embodiment of the present invention having three groups of openings, each group comprising three openings,<Tb> FIG. 2 <SEP> is a representation corresponding to that of FIG. 1 but with four openings per group,<Tb> FIG. 3 <SEP> is a representation corresponding to that according to FIGS. 1 and 2, however, with five openings per group,<Tb> FIG. 4 <SEP> is a bottom view of the cover of FIG. 3,<Tb> FIG. 5 <SEP> is a perspective view of the arrangement of FIG. 4 with a cross section,<Tb> FIG. 6 <SEP> is a plan view of the section according to arrow VI of Fig. 5 and<Tb> FIG. 7 <SEP> is an end view corresponding to the arrow VII of FIG. 5.
    In the following description, the same reference numerals are used for the same and like-acting parts.
    As shown in FIGS. 1-3, the covering grates may be narrower (FIG. 1) or wider (FIGS. 2 and 3), in which case each of the groups 1-3 of openings 10, 10R is more or less includes fewer openings. The edges 11, 12 of the cover grate facing openings are referred to as "edge-side openings 10R», the slots lying between edge openings 10R are referred to as "openings 10".
    The edge-side openings 10R have - as is apparent in particular from FIGS. 5 and 6 - inlet slopes 13 such that a transversely to the direction of extension of the openings 10, 10R running water flow is introduced early in the peripheral openings 10R. These inlet chamfers 13 push edge edges 14 of the openings 10R in the direction of the edges 11, 12, so that the edge regions 15 are relatively narrow.
    Furthermore, it can be seen from the figures that the edge-side openings 10R have a larger overall cross-section, ie are wider than the openings 10R lying between the edge openings 10. As a result, the absorption capacity of the cover grate, especially at higher flow velocities or higher amounts of water per Time unit improved.
    The different width B 1 of the edge-side openings 10 R relative to the smaller width B 3 of the central openings 10, which is still enlarged by the inlet slope 13 to a width B 2, is apparent in particular from FIG. 6.
    The openings 10, 10R are separated from each other by longitudinal webs 20. These longitudinal webs 20 are higher by an amount H than the edge regions 15, which form surfaces of peripheral longitudinal webs 20R. Due to this difference in height, a further "breakage" of a rapidly flowing water flow takes place, which flows transversely to the longitudinal direction of the openings 10, 10R onto the cover grate. About the surface of these longitudinal webs 20 continue to protrude treads 21 by a height difference h up, which increase the skid resistance of the cover against the user.
    To increase the stability of the Abdeckrostes 30 more transverse webs 30 are provided between end-side transverse webs. In order to reduce or minimize an overflow of the transverse webs 30, which to some extent form bridges between the edge regions 15, notches 31 (see in particular FIGS. 6 and 7) are provided in these transverse webs lying deeper than the surfaces of the longitudinal webs 20. A water flow flowing transversely to the direction of extent of the openings 10, 10R onto the cover grate is swirled in these areas, so that a decrease in speed takes place. Therefore, the water can flow into the openings 10, 10R increased.
    From the above it follows that the measures shown here to improve the swallowing capacity of a Abdeckrostes not only individually but especially in their combination are particularly effective, the production cost of such a cover against a conventional, not provided with these special measures cover grate, not is increased.
    LIST OF REFERENCE NUMBERS
    [0022]<tb> 1, 2, 3 <SEP> group<Tb> 10 <September> opening<tb> 10R <SEP> Edge opening<Tb> 11 <September> Rand<Tb> 12 <September> Rand<Tb> 13 <September> run-in slope<tb> 14 <SEP> Edge edge<Tb> 15 <September> edge area<Tb> 20 <September> longitudinal web<tb> 20R <SEP> Edge side ridge<T b> 21 <September> nub<Tb> 30 <September> crosspiece<Tb> 31 <September> notch
    权利要求:
    Claims (7)
    [1]
    1. Covering grate of a surface dewatering device, e.g. a drainage channel or a point drain, comprising:- At least one group (1-3) of a plurality of mutually parallel slot-shaped, by longitudinal webs (20) separate openings (10, 10 R) extending in a direction of extension transverse to a main liquid flow direction (X), characterized in thatperipheral openings (10R) facing edges (11, 12) of the cover grille are wider (B1) than the openings (10; B3) lying between the peripheral openings (10R).
    [2]
    2. cover grate according to claim 1, characterized in thatthe edge-side openings (10R) have inlet slopes (13) at their edge edges (14).
    [3]
    3. cover grate according to one of the preceding claims, characterized in thatthe longitudinal webs (20) are higher than the edge regions (15) between the edges (11, 12) of the cover grating and the edge-side openings (10R).
    [4]
    4. cover grate according to one of the preceding claims, characterized in thata plurality of groups (1-3) provided by openings (10, 10R) and separated by transverse webs (30).
    [5]
    5. cover grate according to one of the preceding claims, in particular according to claim 4, characterized in thatthe transverse webs (30) have notches (31) in areas between the openings (10, 10R).
    [6]
    6. cover grate according to one of the preceding claims, in particular according to claim 5, characterized in thatthe notches (31) are formed such that in a, in the direction of the transverse webs (30) flowing fluid vortex arise.
    [7]
    7. cover grate according to one of the preceding claims, characterized in that the cover grate made of cast material, in particular of iron or plastic casting, is made.
    类似技术:
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    同族专利:
    公开号 | 公开日
    CH710523B1|2018-08-31|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    CH02052/14A|CH710523B1|2014-12-30|2014-12-30|Cover grate for a surface drainage device.|CH02052/14A| CH710523B1|2014-12-30|2014-12-30|Cover grate for a surface drainage device.|
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