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FR2482157A1 - Rectangular section septic tanks - made by blow moulding with integral ribs to enhance stiffness - Google Patents

Rectangular section septic tanks - made by blow moulding with integral ribs to enhance stiffness Download PDF

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Publication number
FR2482157A1
FR2482157A1 FR7931621A FR7931621A FR2482157A1 FR 2482157 A1 FR2482157 A1 FR 2482157A1 FR 7931621 A FR7931621 A FR 7931621A FR 7931621 A FR7931621 A FR 7931621A FR 2482157 A1 FR2482157 A1 FR 2482157A1
Authority
FR
France
Prior art keywords
tank
partition
pit
rectangular section
blow moulding
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.)
Granted
Application number
FR7931621A
Other languages
French (fr)
Other versions
FR2482157B1 (en
Inventor
Benoit Cheval
Didier Ensminger
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.)
Sotralentz SA
Original Assignee
Sotralentz SA
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 Sotralentz SA filed Critical Sotralentz SA
Priority to FR7931621A priority Critical patent/FR2482157A1/en
Priority to IT8015259U priority patent/IT8015259V0/en
Priority to IT12753/80A priority patent/IT1136220B/en
Priority to BE2/58898A priority patent/BE886618A/en
Publication of FR2482157A1 publication Critical patent/FR2482157A1/en
Application granted granted Critical
Publication of FR2482157B1 publication Critical patent/FR2482157B1/fr
Granted legal-status Critical Current

Links

Classifications

    • EFIXED CONSTRUCTIONS
    • E03WATER SUPPLY; SEWERAGE
    • E03FSEWERS; CESSPOOLS
    • E03F11/00Cesspools

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  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Hydrology & Water Resources (AREA)
  • Public Health (AREA)
  • Water Supply & Treatment (AREA)
  • Treatment Of Biological Wastes In General (AREA)

Abstract

Septic tank for domestic used is made by extrusion-blow moulding as a rectangular section tank with at least one internal transverse rib for lateral support. Opt. the side panels of the tank include subsidiary ribs for greater stiffness, esp. if the transverse rib is asymmetrically placed to act as a partition adjacent to a tank manhole near one end. The rectangular tank form is simpler to stock transport and install than a spherical tank of equivalent capacity. Opt. the ribs also act as guides for an internal partition which can shift vertically.

Description

La présente invention concerne le domaine du traitement des eaux usées, en particulier de maisons individuelles, et a pour objet une fosse septique en matière synthétique0
les fosses septiques en matière synthétique existant actuellement sont généralement de section circulaire ou rectangulaire et sont réalisées, soit par rotomoulage ou par stratification de résines au moyen de fibres de verre, dans le cas de fosses circulaires, soit par extrusion-soufflage dans l'autre cas0
Les fosses de section circulaire présentent une bonne résistance aux déformations, en particulier lorsqu'elles sont enterrées, mais elles sont dgun encombrement important, notamment lors du stockage et du transport.De même, leur mise en place requiert une surface au sol ainsi que des travaux de fouille importants. les fosses de section rectangulaire, qui permettent un important gain de place lors du stockage, du transport et de la pose, et qui ne nécessitent que des tranchées relativement faciles à exécuter, sont cependant moins résistantes, notamment er ce qui concerne la charge transmise en position enterrée. En effet, les grandes parois latérales de telles fosses sont moins rigides, de sorte que le constructeur est obligé de prévoir des renforts intérieurs sur lesquels est généralement fixée la cloison de séparation0 En outre, lors de la pose, des précautions supplémentaires sont nécessaires afin d'éviter ltécrasement de la fosse0
la présente invention a pour but de pallier ces inconvénients.
The present invention relates to the field of wastewater treatment, in particular of individual houses, and relates to a septic tank made of synthetic material.
the septic tanks in synthetic material currently existing are generally of circular or rectangular section and are produced, either by rotational molding or by stratification of resins by means of glass fibers, in the case of circular tanks, or by extrusion-blowing in the other cas0
The circular cross-section pits have good resistance to deformation, especially when buried, but they are very bulky, especially during storage and transport. Similarly, their installation requires a ground surface as well as major excavation work. the rectangular section pits, which allow a significant saving of space during storage, transport and installation, and which only require relatively easy to execute trenches, are however less resistant, in particular as regards the load transmitted in buried position. Indeed, the large side walls of such pits are less rigid, so that the builder is obliged to provide internal reinforcements on which the partition wall is generally fixed0 In addition, during installation, additional precautions are necessary in order to '' avoid crushing the pit0
the present invention aims to overcome these drawbacks.

Elle a, en effet, pour objet une fosse septique en ma tière synthétique, réalisée par extrusion-soufflage, caractérisée en ce que la cloison de séparation fait partie intégrante de la fosse, et se présente sous forme d'une nervure intérieure reliant les parois latérales de la fosse, et s'étendant de la partie supérieure jusqu'à proximité de la partie inférieure. Its purpose is, in fact, to a septic tank made of synthetic material, produced by blow-molding, characterized in that the partition is an integral part of the tank, and is in the form of an internal rib connecting the walls sides of the pit, and extending from the upper part to near the lower part.

Conformément à une autre caractéristique de l'invention, la fosse est pourvue d'une ou de plusieurs nervures intérieures de raidissage reliant les parois latérales. According to another characteristic of the invention, the pit is provided with one or more internal stiffening ribs connecting the side walls.

L'invention sera mieux comprise grâce à la description ci-après, qui se rapporte à un mode de réalisation préféré, donné à titre d'exemple non liitatif, et expliqué avec réf é- rence au dessin scIématioue amine-~éF dans lequel la figure 1 est une vue en élévation latérale d'une fosse septique conforme à l'invntion la figure 2 est une vue suivant E de la figure 1, et la figure 3 est une vue de dessus de la fosse septique. The invention will be better understood thanks to the description below, which relates to a preferred embodiment, given by way of nonlimiting example, and explained with reference to the drawing scIématioue amine- ~ éF in which the Figure 1 is a side elevational view of a septic tank according to the invention Figure 2 is a view along E of Figure 1, and Figure 3 is a top view of the septic tank.

Conformément à ltirvention, et comme le montrent plus particulièrement, à titre d'exemple, les figures 1 à 7 des dessins annexés, la fosse septique 1 en matière synthétique, réalisée par extrusion-soufflage, et qui présente une forme paraBé- lépipédique, est pourvue d'une cloison de séparation 2 faisant partie intégrante de la fosse 1, et d'une nervure de raidissage 3. In accordance with the invention, and as shown more particularly, by way of example, FIGS. 1 to 7 of the appended drawings, the septic tank 1 made of synthetic material, produced by extrusion-blowing, and which has a paraBelepipedic shape, is provided with a partition 2 forming an integral part of the pit 1, and a stiffening rib 3.

La cloison de séparation 2 se présente sous forme d'une nervure intérieure, qui relie les parois latérales 4 de la fosse 1, et qui s'étend, parallèlement aux parois transversales 7, de la partie supérieure 5 jusqu'à proximité de la partie inférieure en ménageant un passage 6. La nervure 3 présente une hauteur relativement faible et est uniquement destinée à assurer le raidissage des parois latérales 4. La cloison 2 et la nervure de raidis sage 3 sont étroites, de manière à diminuer le moins possible le volume utile de la fosse 1, qui est, en outre, pourvue dans sa partie supérieure 5 dlun trou d'homme 8 permettant d'effectuer les opérations de nettoyage périodique et en haut des parois transversales 7 d'une entrée 9 et d'une sortie 10 des eaux usées.La nervure de raidissage 3 est située près de l'entrée 9,et la cloison de séparation 2 est située près de la sortie 10, à côté du trou d'homme 8, et délimite dans la fosse 1 deux volumes distincts qui ne peuvent communiquer que par le passage 6. The partition wall 2 is in the form of an inner rib, which connects the side walls 4 of the pit 1, and which extends, parallel to the transverse walls 7, from the upper part 5 to near the part lower by providing a passage 6. The rib 3 has a relatively small height and is only intended to ensure the stiffening of the side walls 4. The partition 2 and the wise stiffening rib 3 are narrow, so as to minimize the volume useful of the pit 1, which is further provided in its upper part 5 with a manhole 8 making it possible to carry out the periodic cleaning operations and at the top of the transverse walls 7 with an inlet 9 and an outlet 10 of wastewater. The stiffening rib 3 is located near the entrance 9, and the partition wall 2 is located near the exit 10, next to the manhole 8, and delimits in the pit 1 two volumes which can only communicate in the past age 6.

La fosse septique conforme à l'invention, obtenue en une seule opération d'extrusion-soufflage, peut etre stockée, transportée, et posée facilement, et ne nécessite pas la mise en place ultérieure de renforts intérieurs empêchant son écrasement lorsqu'elle est enterrée, ou la pose de renforts extérieurs, -tels que des bandages métai.liques, pour une utilisation hors sol, la résistance au déformations lui étant conférée grace à la cloison 2 et à la nervure de raidissage 30
En outre, la cloison de séparation 2 étant obtenue lors de l'extrusion-soufflage de la fosse 1, il est possible de réaliser une économie de main-dloeuvre supplémentaire sur les frais inhérents à la pose de cette cloison dans les fosses existantes.De plus, la cloison 2 formant partie intégrante de la fosse 1, toute possibilité de chute ou de déformation de cette cloison, sous l'effet de fortes sollicitations, risquant d'empocher un bon fonctionnement de la fosse est supprimée.
The septic tank according to the invention, obtained in a single extrusion-blowing operation, can be stored, transported, and placed easily, and does not require the subsequent installation of internal reinforcements preventing it from being crushed when it is buried , or the installation of external reinforcements, such as metal bandages, for use above ground, the resistance to deformations being given to it by virtue of the partition 2 and the stiffening rib 30
In addition, the partition wall 2 being obtained during the blow-molding of the pit 1, it is possible to save additional labor on the costs inherent in the installation of this partition in existing pits. more, the partition 2 forming an integral part of the pit 1, any possibility of falling or deformation of this partition, under the effect of heavy stresses, risking to pocket a good functioning of the pit is eliminated.

les figures du dessin annexé représentent une fosse munie d'une nervure de raidissage 3. Cependant, dans le cas de fosses de plus grand volume, celles-ci peuvent être munies de plusieurs nervures de raidissage, tandis que dans le cas de fosses de faible volume, cette nervure n'est pas nécessaire, la rigidité de l'ensemble étant simplement assurée par la cloison de séparation. the figures of the appended drawing represent a pit provided with a stiffening rib 3. However, in the case of larger pits, these can be provided with several stiffening ribs, while in the case of small pits volume, this rib is not necessary, the rigidity of the assembly being simply ensured by the partition.

Bien entendu, l'invention n'est pas limitée au mode de réalisation décrit et représenté au dessin annexés Des modifications restent possibles, notamment du point de vue de la constitution des divers éléments, ou par substitution dtéquiva- lents techniques, sans sortir pour autant du domaine de protection de l'invention. Of course, the invention is not limited to the embodiment described and represented in the appended drawing. Modifications remain possible, in particular from the point of view of the constitution of the various elements, or by substitution of equivalent techniques, without however departing. of the protection field of the invention.

Claims (3)

-REVENPICATI0iS- -REVENPICATI0iS- lo Fosse septique en matière synthétique, réalisée par extrusion-soufflage, caractérisée- en ce que la cloison de sépa-ration fait partie intégrante de la fosse, et se présente sous forme d2une nervure intérieure reniant les parois latérales de la fosse, et s'étendant de la partie supérieure jusqu'à proximité de la partie inférieure. lo Septic tank in synthetic material, produced by extrusion-blowing, characterized in that the partition is an integral part of the tank, and is in the form of an internal rib denying the side walls of the tank, and s' extending from the top to near the bottom. 2. Fosse suivant la revendication 1, caractérisée en ce que la cloison de séparation s' étend parallèlement aux parois transversales et présente une faible épaisseur, la cloison de séparation ménageant avec la partie inférieure de la fosse un passage permettant la communication entre les volumes délimités par ladite cloison dans la fosse. 2. Pit according to claim 1, characterized in that the partition wall extends parallel to the transverse walls and has a small thickness, the partition wall providing with the lower part of the pit a passage allowing communication between the delimited volumes by said partition in the pit. 3. Fosse suivant l'une quelconque des revendications 1 et 2, caractérisée en ce quelle est pourvue d'une ou de plusieurs nervures intérieures de raidissage reliant les parois latérales.  3. Pit according to any one of claims 1 and 2, characterized in that it is provided with one or more internal stiffening ribs connecting the side walls.
FR7931621A 1979-12-14 1979-12-14 Rectangular section septic tanks - made by blow moulding with integral ribs to enhance stiffness Granted FR2482157A1 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
FR7931621A FR2482157A1 (en) 1979-12-14 1979-12-14 Rectangular section septic tanks - made by blow moulding with integral ribs to enhance stiffness
IT8015259U IT8015259V0 (en) 1979-12-14 1980-12-12 Septic tank in plastic
IT12753/80A IT1136220B (en) 1979-12-14 1980-12-12 Septic tank in plastic
BE2/58898A BE886618A (en) 1979-12-14 1980-12-12 SEPTIC TANK IN SYNTHETIC MATERIAL

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7931621A FR2482157A1 (en) 1979-12-14 1979-12-14 Rectangular section septic tanks - made by blow moulding with integral ribs to enhance stiffness

Publications (2)

Publication Number Publication Date
FR2482157A1 true FR2482157A1 (en) 1981-11-13
FR2482157B1 FR2482157B1 (en) 1983-04-01

Family

ID=9233135

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7931621A Granted FR2482157A1 (en) 1979-12-14 1979-12-14 Rectangular section septic tanks - made by blow moulding with integral ribs to enhance stiffness

Country Status (3)

Country Link
BE (1) BE886618A (en)
FR (1) FR2482157A1 (en)
IT (2) IT8015259V0 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0861947A1 (en) * 1997-02-26 1998-09-02 Sealand Technology, Inc. Plastic combined vacuum and holding tank
US5931642A (en) * 1995-10-31 1999-08-03 Sealand Technology, Inc. Plastic combined vacuum and holding tank

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB382421A (en) * 1931-10-23 1932-10-27 Frederick James Commin Improvements in or relating to septic tanks
DE1609027A1 (en) * 1966-02-12 1970-03-05 Walter Wagenhuber Betonsteinwe Small waste water treatment plant
FR2054970A5 (en) * 1970-07-28 1971-05-07 Neveux Francois
FR2215517A1 (en) * 1973-01-27 1974-08-23 Sotralentz Sa
GB1515719A (en) * 1976-09-23 1978-06-28 Conder Group Serv Ltd Septic tank

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB382421A (en) * 1931-10-23 1932-10-27 Frederick James Commin Improvements in or relating to septic tanks
DE1609027A1 (en) * 1966-02-12 1970-03-05 Walter Wagenhuber Betonsteinwe Small waste water treatment plant
FR2054970A5 (en) * 1970-07-28 1971-05-07 Neveux Francois
FR2215517A1 (en) * 1973-01-27 1974-08-23 Sotralentz Sa
GB1515719A (en) * 1976-09-23 1978-06-28 Conder Group Serv Ltd Septic tank

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5931642A (en) * 1995-10-31 1999-08-03 Sealand Technology, Inc. Plastic combined vacuum and holding tank
EP0861947A1 (en) * 1997-02-26 1998-09-02 Sealand Technology, Inc. Plastic combined vacuum and holding tank

Also Published As

Publication number Publication date
FR2482157B1 (en) 1983-04-01
IT1136220B (en) 1986-08-27
IT8012753A0 (en) 1980-12-12
IT8015259V0 (en) 1980-12-12
BE886618A (en) 1981-04-01

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