EP2299013A1 - Regard inspectable - Google Patents

Regard inspectable Download PDF

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Publication number
EP2299013A1
EP2299013A1 EP10176691A EP10176691A EP2299013A1 EP 2299013 A1 EP2299013 A1 EP 2299013A1 EP 10176691 A EP10176691 A EP 10176691A EP 10176691 A EP10176691 A EP 10176691A EP 2299013 A1 EP2299013 A1 EP 2299013A1
Authority
EP
European Patent Office
Prior art keywords
manhole
case
inspectionable
semi
pipe
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP10176691A
Other languages
German (de)
English (en)
Inventor
Franco Pelliccia
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Guidi Srl
Original Assignee
Guidi Srl
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Guidi Srl filed Critical Guidi Srl
Publication of EP2299013A1 publication Critical patent/EP2299013A1/fr
Withdrawn legal-status Critical Current

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D29/00—Independent underground or underwater structures; Retaining walls
    • E02D29/12—Manhole shafts; Other inspection or access chambers; Accessories therefor
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D29/00—Independent underground or underwater structures; Retaining walls
    • E02D29/12—Manhole shafts; Other inspection or access chambers; Accessories therefor
    • E02D29/121—Manhole shafts; Other inspection or access chambers; Accessories therefor characterised by the connection between shaft elements, e.g. of rings forming said shaft
    • E—FIXED CONSTRUCTIONS
    • E03—WATER SUPPLY; SEWERAGE
    • E03F—SEWERS; CESSPOOLS
    • E03F5/00—Sewerage structures
    • E03F5/04—Gullies inlets, road sinks, floor drains with or without odour seals or sediment traps
    • E03F5/0401—Gullies for use in roads or pavements
    • E03F5/0405—Gullies for use in roads or pavements with an odour seal
    • E03F5/0406—Gullies for use in roads or pavements with an odour seal the odour seal being easily accessible for cleaning

Definitions

  • the present invention relates to an inspectionable manhole as claimed in the preamble of the first claim.
  • Said inspectionable manholes are normally buried into the ground and provided in sewerage systems, waterworks, cableways or similar installations and are typically composed of a case internally provided with a portion of pipe that is connected to the pipe on which the manhole is applied.
  • the section of pipe inside the case is configured as a trap or more generally is simply bent as U or V in such a way to create an obstacle for the passage of odors and/or impurities carried by the fluid that flows in the pipe.
  • the section of internal pipe is made accessible from the outside by means of at least one inspection cap, in such a way to verify and/or remove said impurities and control the state of the fluid.
  • the case is buried into the ground and closed on top with a removable lid that can be of walk-over or drive-over type, according to the specific requirements, and is therefore flush with the ground or road surface.
  • the concrete case is made and the section of inspectionable pipe is housed inside it: the concrete case is normally made by casting concrete in a formwork inside which the section of internal pipe has already been positioned, in such a way to protrude from two opposite walls of the same case.
  • manholes differ according to burial depth.
  • the purpose of the present invention is to remedy the aforementioned drawbacks.
  • the inspectionable manhole (1) of the present invention comprises a case (2) that houses a section of internal pipe (3), which is preferably provided with curved section, in particular as V-shaped trap for the aforementioned reasons.
  • the section of internal pipe (3) comprises two end unions with horizontal axis (4 and 5) that are connected with the network pipeline (not shown in the enclosed figures) in operational condition of the manhole (1).
  • Said unions (4 and 5) pass through two opposite walls of the manhole (1).
  • the section of pipe (3) is provided with two openings with upward direction closed by two inspection caps (6) and (7); the two openings are situated on the two branches of internal pipe (3) upstream and downstream the top of said curved section.
  • the inspection caps (6) and (7) can be provided with internal thread in order to be screwed onto the section of pipe (3) that is suitably provided with corresponding thread, or they can be simply fitted and fixed by means of interference, just like a standard cap, or locked by means of reversible locking means, in particular screws.
  • the manhole (1) is closed on top by a lid (8) that rests on a collar (9) applied on the opening of the case (2).
  • the case (2) is obtained with two case semi-shells (2a) and (2b) that are specular and joined along a longitudinal plane of symmetry of the case (2).
  • the two semi-shells (2a) and (2b) are advantageously molded in order to be light and inexpensive.
  • the internal section of pipe (3) is composed of two pipe semi-shells (3a) and (3b) that are obtained in one piece with the relevant case semi-shell (2a) and (2b).
  • Said pipe semi-shells (3a) and (3b) are specular and joined along a longitudinal plane of symmetry of the internal section of pipe (3), which coincides with the longitudinal plane of symmetry of the case (2) and more in general with the longitudinal plane of symmetry of the manhole (1).
  • said manhole (1) is made of plastic material, except for the lid (8) that is preferably made of cast-iron.
  • Such an embodiment is advantageously simple and inexpensive and allows for overcoming the aforementioned drawbacks of the known types of manhole.
  • the two case semi-shells (2a) and (2b) and the two pipe semi-shells (3a) and (3b) are mutually joined by means of techniques of known type (i.e. gluing, welding, interference, etc.) and provide watertight connection between the pipe semi-shells (3a) and (3b).
  • the case (2) has a longitudinal stiffening partition (22) that lies on the plane of symmetry of the case (2) and manhole (1).
  • Such a partition (22) is formed of two stiffening semi-partitions (22a and 22b) that are respectively an integral part of the corresponding case semi-shell (2a and 2b).
  • stiffening semi-partitions (22a and 22b) are interrupted in correspondence with the pipe semi-shells (3a) and (3b).
  • the case (2) comprises reinforcement walls (21) that extend transversally between the opposite longitudinal walls of the case (2) in order to make it stronger, especially when the manhole (1) is of drive-over type, that is to say when the manhole (1) is installed in a road with lid flush to the road surface and is subject to the stress originated by vehicular traffic.
  • the collar (9) is monolithic and discharges the stress on the case (2) that, as mentioned above, is composed of the two case semi-shells (2a) and (2b) and is potentially less sturdy.
  • Figs. 3 and 4 show a second embodiment of the manhole (10) of the present invention.
  • the manhole (10) also comprises an extension (91) of the collar (90) that is necessary when the case (20) must be installed at higher depth into the ground (for example because the network pipe is situated in lower position).
  • the manhole (10) is identical to the aforementioned manhole (1) except for the extension (91): advantageously, this allows for obtaining a manhole that can be installed at different depth into the ground without having to provide - as in case of concrete manholes of the prior art - multiple models of the same manhole with different sizes, one for each burial depth; in such a case, it will be simply necessary to provide modular extensions (91) with different heights, while maintaining the case (20) and collar (9) basically unchanged.
  • Another advantage consists in the reduction of costs and warehouse volumes; in fact, whereas in case of concrete manholes of the prior art it was necessary to hold several types of manhole in stock for installation at different heights, in this case it is sufficient to hold only several extensions (91) in stock.
  • the aforementioned manhole (10) is deprived of reinforcement walls (21).
  • the manhole (10) needs no reinforcement, for instance because it is of walk-over, and not drive-over type, or because the thickness of the walls is such to withstand the stress transmitted during normal use.
  • the manufacturing process is simpler because the same molding operation is used to obtain a case semi-shell (20a) or (20b) and the corresponding pipe semi-shell (30a) or (30b); also the assembly of the manhole (10) is easier and quicker, it only being necessary to couple two parts to obtain both the case (20), the section of internal pipe (30) and the two unions (40) and (50).
  • the collar (90), extension (91) and lid (80) are monolithic, although they could be also obtained by coupling different plastic parts, same as for the case (20) and the section of internal pipe (30): according to the stress generated during the operation of the manhole (10) an expert of the art will easily make such a decision without any inventive effort.
  • the internal pipe may end on the same wall or on contiguous walls or in other configurations that the expert of the field may possibly consider as convenient.
  • backflow valves are installed downstream the manhole in order to avoid the backward passage of animals inside the pipes, or prevent water from passing backwards through the circuit in case of backpressure.
  • Said backflow valves avoid internal flooding of rooms or houses and must be necessarily installed in some cases.
  • valve (V) is obtained in one piece with the manhole (10) of the invention, wherein two pipe semi-shells (30a and 30b) are respectively provided with a valve body semi-shell (Va and Vb) upstream the curved section, in particular as a trap.
  • a plate (P) is inserted and pivoted on top to a horizontal axis.
  • Normally said plate (P) is in basically vertical position and can rotate by 90° under the force of water only in the flow direction of the water.
  • the section of pipe (30) is also provided with an opening closed by a removable inspection cap (710) in correspondence with said valve (V).

Landscapes

  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Structural Engineering (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Mining & Mineral Resources (AREA)
  • Paleontology (AREA)
  • Civil Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • Hydrology & Water Resources (AREA)
  • Public Health (AREA)
  • Water Supply & Treatment (AREA)
  • Sewage (AREA)
  • Sorption Type Refrigeration Machines (AREA)
  • Eye Examination Apparatus (AREA)
EP10176691A 2009-09-15 2010-09-14 Regard inspectable Withdrawn EP2299013A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
ITMC2009A000197A IT1395838B1 (it) 2009-09-15 2009-09-15 Pozzetto ispezionabile.

Publications (1)

Publication Number Publication Date
EP2299013A1 true EP2299013A1 (fr) 2011-03-23

Family

ID=42106104

Family Applications (1)

Application Number Title Priority Date Filing Date
EP10176691A Withdrawn EP2299013A1 (fr) 2009-09-15 2010-09-14 Regard inspectable

Country Status (2)

Country Link
EP (1) EP2299013A1 (fr)
IT (1) IT1395838B1 (fr)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1708465A (en) * 1928-04-14 1929-04-09 Edward W N Boosey Backwater-intercepting tile-drain sump
GB1595497A (en) * 1978-05-22 1981-08-12 Paragon Plastics Ltd Access points for drainage and sewerage pipes
EP1061183A2 (fr) * 1999-06-18 2000-12-20 Swintex Limited Améliorations dans ou se rapportant à la boíte de jonction souterraine
EP1310604A1 (fr) * 2001-11-13 2003-05-14 DROSSBACH GmbH & Co. KG Puits de drainage et méthode pour produire la même

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1708465A (en) * 1928-04-14 1929-04-09 Edward W N Boosey Backwater-intercepting tile-drain sump
GB1595497A (en) * 1978-05-22 1981-08-12 Paragon Plastics Ltd Access points for drainage and sewerage pipes
EP1061183A2 (fr) * 1999-06-18 2000-12-20 Swintex Limited Améliorations dans ou se rapportant à la boíte de jonction souterraine
EP1310604A1 (fr) * 2001-11-13 2003-05-14 DROSSBACH GmbH & Co. KG Puits de drainage et méthode pour produire la même

Also Published As

Publication number Publication date
ITMC20090197A1 (it) 2011-03-16
IT1395838B1 (it) 2012-10-26

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