DE102011107788A1 - Container, which is prepared from plastic in rotational molding, useful for sewage- and rain water technology, comprises peripheral outer wall, bottom, head region, open-topped tanks divided by partition walls, and central center column - Google Patents

Abstract

Container (1), which is prepared from plastic in rotational molding, comprises a peripheral outer wall (11), a bottom (12), a head region (13), and at least two open-topped tanks divided by partition walls. An inner-side of the container comprises a central center column (2), upstanding vertically from the bottom. The partition walls that are present between the central column and the outer wall, are rotated in the form of separate plates.

Description

The invention relates to a container for applications of sewage and rainwater technology, which is made in rotational molding of plastic, with a circumferential outer wall, a bottom and a head portion.

Such containers are known as one-piece, not subdivided rainwater container in different shapes. Furthermore, containers for small sewage treatment plants are known, which are known in the form of a cylindrical, concrete concrete container with partitions used sectionally, usually in three basins, namely occupying an approximately half of the volume occupying primary sedimentation basin, occupying a ¼ of the volume Hauptklärbeckens and the remaining volume area sedimentation tank. In Nachklärbecken usually a sloping ground is provided as a mud slide.

In this case, plastic containers are known, which are subdivided after production of the container with a partition by gluing a plastic segment. However, it has been shown that flat, glued partitions in larger containers do not have sufficient stability. In addition, the separate Einklebevorgang consuming in the production.

Furthermore, from the EP 1 914 204 B1 a plastic container for small sewage treatment plants is known, which is also produced in rotational molding. The plastic container has a peripheral outer wall, a bottom portion and a head portion, wherein to form the necessary for a small wastewater treatment tanks dividing walls are formed by pointed bulges from the bottom area to the head area as partitions closed up to the top. Accordingly, each pool needs an access opening.

The disadvantage is that the cavities formed by the pointed bulges can be filled with difficulty and thus endanger the long-term stability of the container.

Furthermore, these cavities significantly reduce the clarification volume of the container, so that the container must be designed to be larger in external dimensions than otherwise required.

Furthermore, it is disadvantageous that a separate manhole is to be provided for each tank in the tank, for a conventional small wastewater treatment plant with 3 tanks thus 3 man openings, the associated Domabschnitte and corresponding cover need, which is costly and not very appealing on the surface.

The object of the invention is to provide a container for sewage and rainwater technology, which can be made in one piece in rotational molding of plastic and thereby divided into open-topped basin.

This object is achieved with the invention in a generic container characterized in that within the container a central, vertically rising from the floor center column and at least two divided by partition walls, open-topped basin are provided, wherein between the center column and the outer wall, the partitions in the form of Separate plates are einrotiert.

By arranged within the container upstanding center column introduced in the form of separate plates partitions between center column and outer wall can be bordered, whereby their span is halved and thus the stability is significantly increased. Here, the center column ends as well as the einrotierten between the middle column and the partition walls below the head area, so that from above the access is given in each of the subdivided basins for the installation of wastewater treatment technology and subsequent maintenance.

If a manhole in the head area, preferably centrally above the center column, is arranged, so that even in the installed state of the container in the ground access to the built-in container at any time technology is possible. Furthermore, the container interior can be achieved for cleaning purposes. In the case of a manhole, which is arranged centrally above the center column, the accessibility of each basin is ensured in equal measure. Furthermore, a load entry is optimized for a container with an approximately square or circular floor plan at a centrally arranged manhole. Such containers with corresponding placed on the manhole Dombereich can be installed, for example, also on areas used by cars (parking spaces).

In order to obtain an optimal material connection in the region of the joint of the rotated partitions in the material of the rest of the container, the partitions are sheet-like plates made of plastic, in particular of a polyethylene material. It is particularly preferred if the dividing walls are constructed of a high-density polyethylene (HDPE), of a medium-density polyethylene (MDPE) or of foamed polyethylene.

This creates a stable, watertight connection that can be guaranteed in the manufacturing process by the rotational molding.

By placing the soil in a basin, the secondary clarifier, at an angle of 30 ° to 75 °, preferably about 60 °, inclined to the horizontal is formed, wherein the forming mud chute reaches about half the height of the container, the most often required for sewage sludge chute in Nachklärbecken can be made directly during the production of the container during rotational molding. It thus eliminates the subsequent introduction of an additional mud chute wedge, whereby the manufacturing cost can be reduced.

In order to provide a stiffening for the center column and the area of the mud chute in the area of the secondary settling basin when forming the mud chute, the lower part of the dividing walls in the area of the mud chute are formed as steep bulges of the soil, which are produced in the rotational form of swords rising from the ground , wherein the two swords on the one side with the outer wall shape and on the other side with the required for rotational molding for the center column, upstanding from the bottom mold mandrel intersect.

If the bulge reaches up to the upper end of the mud chute and horizontally up to the center pillar, in addition to the stiffening of the center pillar, it is also achieved that the partitions to be locked in place at this point are simply rectangular-cut plates in terms of production engineering.

By providing a separate reinforcing sector which engages the slit-shaped cavities of the container produced by the swords and forms the outlines of the container formed by the vertical outer wall and horizontal bottom in the area of the mud chute, the underflooding region becomes underneath the mud chute filled by this positive reinforcement sector and thus improves the stability and stability of the entire container when grounding.

Hereinafter, an embodiment of the invention will be described in detail with reference to the accompanying drawings.

It shows:

1 : a container in spatial view and

2 : the in 1 illustrated container in Horizonalschnitt.

In 1 is a spatial view of a container 1 for applications of sewage and rainwater technology, here as a small sewage treatment plant shown. Below the container 1 is a reinforcement sector 6 Shown spaced apart in the form of an exploded view, which in the installed state in the container 1 is used.

The container 1 has a circumferential outer wall 11 which is essentially vertically aligned. Furthermore, the container has 1 a floor 12 which is oriented substantially horizontally. At the top, the container closes with a head area 13 , in the center of which is a manhole 5 , For example, with 80 cm diameter and Domanschluss is arranged. To stiffen the container 1 are reinforcement beads 15 in the outer wall 11 , the floor 12 and the head area 13 formed in a suitable orientation and distribution. Furthermore, in the head area 13 four vertically oriented connection surfaces 16 designed for connection of inlet and outlet.

In the illustrated embodiment, the container 1 a circular floor plan. Also conceivable is an approximately square floor plan. In a preferred embodiment, the container 1 a maximum outside diameter of 2.35 m and a total height of 2 m to 2.80 m, preferably 2.20 m or 2.55 m. In the last two preferred dimensions of the clarifier has a clarification technical volume of 4,500 l and 6,000 l. By limiting the largest outside diameter to 2.35 m, the container can easily be transported on the loading areas of conventional trucks. Furthermore, the container can be adjusted in concrete tanks with a corresponding inner diameter for the conversion of outdated equipment.

In 2 is in a horizontal section through the in 1 illustrated container 1 approximately at the level of the transition between the outer wall 11 and head area 13 the inside of the container 1 shown. In the illustrated embodiment, the container 1 in a primary clarifier 31 with semicircular floor plan, a main clarifier 32 with a quarter-circle cross section and a secondary clarifier 33 also with a quarter-circle-shaped cross-section sectionally through partitions 4 separated, each from the outer wall 11 of the container 1 to a central of the ground 12 of the container 1 upstanding center column 2 are used. Optionally, the primary clarifier 31 through another optional partition 42 also divided into two quarter sector volumes. For conventional small wastewater treatment applications in the 3-chamber system is the optional partition 42 not built in.

The partitions 4 consist in a preferred embodiment of HDPE plates used in the manufacture of the container 1 be attached in the designated rotational shape to corresponding brackets, after which the subsequent rotational molding for the rest of the container 1 required plastic granules in the then heated mold for rotational molding or -interntern is introduced and thus the in 2 illustrated training the between outer wall 11 and center column 2 Einrotierten partitions 4 results.

In the secondary clarifier 33 is an outer circular sector of the bottom to the horizontal at an angle of about 60 ° inclined. This part forms a mud slide 14 , as it makes sense for secondary clarifier. As in 1 can be seen, the mud slide 14 on the outside wall 11 to about half the total height of the container 1 , To stiffen the container and especially from the ground 12 towering center column 2 they are at the secondary clarifier 33 adjacent partitions 4 in its lower part 41 as steep bulges of the soil 12 trained as it is in 1 is apparent. These bulges to form the lower part 41 the partitions 4 are formed in rotational form as bottom-raised swords, which on the outer side with the outer wall shape and in the center with that for rotational molding for the center column 2 necessary, from the soil shape upstanding mandrel intersect. This is the center column 2 through the lower part 41 the the secondary clarifier 33 adjacent partitions 4 stiffened.

In this case in the outer shape of the container 1 forming slit-like cavities below the secondary settling tank 33 is then the amplification sector 6 insertable in such a way that it is from the vertical outer wall 11 and horizontal ground 12 formed outlines of the container 1 in the area of the mud slide 14 forms, virtually results in a completed cylindrical container. When the earth is thus the container 1 stiffened so that it can be placed over the entire surface in a pit and a possibly not completely achievable filling the through the mud chute 14 and the lower parts 41 the the secondary clarifier 33 surrounding partitions 4 forming cavities the overall stability of the container 1 can not endanger.

LIST OF REFERENCE NUMBERS

1

container

2

Central column

3

pool

4

partition wall

5

manhole

6

strengthening sector

11

outer wall

12

ground

13

head area

14

mud slide

15

reinforcing bead

16

terminal area

31

primary clarifier

32

main clarifier

33

secondary clarifier

41

lower part

42

optional partition

QUOTES INCLUDE IN THE DESCRIPTION

This list of the documents listed by the applicant has been generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Cited patent literature

• EP 1914204 B1 [0004]

Claims (8)

Container ( 1 ) for applications of sewage and rainwater technology, which is made in rotational molding of plastic, with a peripheral outer wall ( 11 ), a floor ( 12 ) and a header area ( 13 ), characterized in that inside the container ( 1 ) a central, vertical from the ground ( 12 ) raised center column ( 2 ) and at least two by partitions ( 4 ) divided, open-topped basin ( 3 ) are provided, wherein between the center column ( 2 ) and the outer wall ( 11 ) the partitions ( 4 ) are rotated in the form of separate plates. Container according to claim 1, characterized in that a manhole ( 5 ) in the head area ( 13 ), preferably centrally above the center column ( 2 ) is arranged. Container according to claim 1 or 2, characterized in that the partitions ( 4 ) are flat plates made of a plastic. Container according to claim 3, characterized in that the partitions ( 4 ) Are sheets of a polyethylene material. Container according to claim 4, characterized in that the partitions ( 4 ) are made of high density polyethylene (HDPE), medium density polyethylene (MDPE) or foamed polyethylene. Container according to one of the preceding claims, characterized in that the bottom ( 12 ) in a basin ( 3 ), the secondary clarifier ( 33 ), at an angle of 30 ° to 75 °, preferably about 60 °, inclined to the horizontal, wherein the forming mud slide ( 14 ) up to half the height of the container ( 1 ) enough. Container according to claim 6, characterized in that the lower part ( 41 ) of the partitions ( 4 ) in the area of the mud slide ( 14 ) as a steep curvature of the soil ( 12 are formed in the rotational form of towering from the ground swords, wherein the two swords on one side with the outer wall shape and on the other side with that for rotational molding for the center column ( 2 ), intersecting mandrel raised from the bottom mold. Container according to claim 7, characterized in that a separate amplification sector ( 6 ) provided in the slot-shaped cavities of the container ( 1 ) and the vertical outer wall ( 11 ) and horizontal ground ( 12 ) formed outlines of the container in the mud chute ( 14 ) ausformt.

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