DE202020101216U1 - Sedimentation plant - Google Patents

Abstract

Sedimentation system (100) for cleaning a fluid in a fluid receiving volume (101), wherein the sedimentation system (100) can be flowed through by the fluid, with a container (102) having an inlet (103) for the fluid and an outlet (104) for comprises the fluid, the inlet (103) for the fluid opening tangentially into a section (105) of the container (102) with a circular or approximately circular cross-section, a separating element (106) being arranged in the container (102) which is tubular and through which the fluid receiving volume (101) of the container (102) is divided into a first section (107) outside the separating element (106) and a second section (108) inside the separating element (106), the inlet (103 ) for the fluid opens either into the first section (107) or into the second section (108), and the outlet (104) for the fluid is arranged in such a way that it opens out of the second section (108) if the inlet (103) opens into the first section (107), or that this opens out of the first section (107) when the inlet (103) opens into the second section (108), and the separating element (106) has two ends (109, 110) has a first end (109) which ends above the inlet (103), and a second end (110) which ends below the outlet (104), and a funnel-shaped perforated diaphragm (111) below of the second end (110) of the separating element (106) is arranged.

Description

The invention relates to a sedimentation system for cleaning a fluid. The invention also relates to a fluid intake, storage or control system with such a sedimentation system.
Rainwater from completely or partially sealed surfaces contains a high proportion of mostly particulate pollutants. This fluid is therefore cleaned using mechanical processes such as sedimentation. Systems for cleaning are usually multi-stage and therefore require a corresponding amount of space. Due to their complex structure, there are various maintenance points that are associated with complex maintenance work.
Simple systems with a high cleaning performance for contaminated fluids are therefore sought.
The object of the present invention is to specify a sedimentation system for cleaning a fluid which overcomes the disadvantages of the prior art described above, is simple in construction, is easy to maintain and has a high cleaning performance.
Another object of the present invention is to specify a fluid intake, storage or control system with a sedimentation system.

The first object of the invention is achieved by the subject matter of claim 1.
It has surprisingly been found that a sedimentation system for cleaning a fluid in a fluid receiving volume completely solves the task if it is provided that the sedimentation system can be flowed through by the fluid, the sedimentation system having a container which has an inlet for the fluid and an outlet for having the fluid, the inlet for the fluid opening tangentially into a section of the container with a circular or approximately circular cross-section, wherein a separating element is arranged in the container, which is tubular and through which the fluid receiving volume of the container into a first section outside of the separating element and a second section is divided within the separating element, the inlet for the fluid opening into either the first section or the second section, and the outlet for the fluid is arranged such that it opens out of the second section when de r inlet opens into the first section, or that this opens out of the first section when the inlet opens into the second section, and wherein the separating element has two ends, a first end that ends above the inlet, and a second end that ends below the drain, and a funnel-shaped perforated screen, which is arranged below the second end of the separating element. A sedimentation system of the aforementioned embodiment according to the invention has a compact design, can be easily adapted to the amount of fluid to be cleaned, has a low pressure loss when flowing through the fluid, enables uncomplicated maintenance and inspection to be carried out in a simple manner, is lightweight and inexpensive to manufacture. In particular, in the case of the sedimentation system according to the invention, it cannot happen that a fluid undesirably flows through the system without it being cleaned. The sedimentation system described above makes it possible to ensure a uniform flow of the fluid in the system. As a result, no dead spaces are formed in which there is no or significantly reduced sedimentation of the substances carried along by the fluid.

Due to the compact design of the sedimentation system according to the invention, there is only a single maintenance point at which the system can be checked, cleaned and serviced. Furthermore, the sedimentation system according to the invention is built to be small, so that it can also be accommodated in confined spaces.
The tangential arrangement of the inlet avoids strong turbulence in the system, especially when there is a strong inflow of fluid, which can lead to a remobilization of solids that have already separated out.
In this way, kinetic energy is withdrawn from the fluid and the flow speed of the fluid is reduced. Furthermore, a circulating flow direction of the fluid flowing in the sedimentation system is brought about in this way. As a result, the sedimentation area in the sedimentation system is optimally flowed through, so that dead spaces can be avoided.
The residence time distribution of the fluid in the sedimentation system is improved in this way, and whirling up of the sedimented substances is avoided.

The sedimentable substances are separated out in the sedimentation system and safely retained there in the area below the funnel-shaped perforated diaphragm from being swirled up again.

It can prove to be extremely favorable if the sedimentation system is designed in such a way that the second end of the separating element has notches. The notches at the second end of the separating element are formed in such a way that they are formed between these tips.
When flowing around the notches and peaks at the second end of the separating element, local peaks in the flow velocity at the edge of the separating element are avoided, so that sedimentable material that carries the fluid leaves the fluid flow in the direction of gravity and sinks downwards.

With the present invention, the sedimentation system ( 100 ) be designed in such a way that the separating element has a conical shape, the clear width of which becomes smaller towards the second end.
By forming a conical shape of the separating element, the speed of the fluid flowing in the sedimentation system during operation can be determined, whereby the settling behavior of sedimentable substances carried along in the fluid can be optimized.
Due to the conical shape of the separating element, the clear width of which becomes smaller towards the second end, a slowdown of the flow can be achieved in the area of the second end when the fluid flows from the first section to the second section, whereby sedimentable substances are more likely to move in the direction of gravity move downwards and migrate out of the fluid flow through the perforated diaphragm into the settling space below the perforated diaphragm, whereby the fluid is cleaned of the sedimentable substances.

The sedimentation system according to the present invention can be significantly upgraded if it is provided that a removable or permanently installed sieve is held in the separating element on a holder provided for this purpose, or a removable sieve bucket on a holder provided for this purpose.
With the aid of such a sieve or sieve bucket, material entrained in the fluid, for example leaves or other dirt of a certain size, can be deposited on the sieve or on the sieve bucket. If the fluid flow through the sedimentation system comes to a standstill because no more fluid is fed to the sedimentation system, the material deposited on the sieve or on the sieve bucket can detach from there and fall through the perforated screen into the receiving space located under the perforated screen and collect there .
By arranging the sieve on a holder or by arranging the sieve bucket on a holder, the sieve can be removed from the sedimentation system in the case of a removable support in order to clean it, for example; the same is possible for the sieve bucket. In the case of a permanently installed sieve in the sedimentation system, this can, for example, contribute to the strength of the separating element, so that it can be designed with a thinner wall thickness, for example.

In a preferred development of the sedimentation system, it can be provided that a cleaning agent, in particular a cleaning agent in granulate form, is received in the separating element on the sieve or in the sieve bucket or in the form of a cartridge. Such a cleaning agent can bind undesirable substances contained in the fluid, for example. This can take place, for example, through adsorption of the substances on the surface of the cleaning agent or absorption by the cleaning agent. In another way, the cleaning agent can change the pH of the fluid by releasing hydrogen ions or by releasing hydroxyl ions. Finally, the cleaning agent can also replace undesired ions in the fluid with other ions by ion exchange.
The cleaning agent can be used as a powder or as granules. In addition to pouring the cleaning agent on the sieve or in the sieve bucket of the sedimentation system, the cleaning agent can also be used in the sedimentation system in the form of a cartridge. Such a cartridge enables simple insertion and removal of the cleaning agent into or out of the sedimentation system.
It goes without saying that the cleaning agent is always arranged in the sedimentation system in such a way that the fluid flows through it during operation of the system, that is to say when the fluid flows through the sedimentation system, and in this way can develop its effect.

The sedimentation system of the present invention can usefully be further developed in such a way that a maintenance pipe is arranged which penetrates the cleaning agent.
Such a maintenance pipe, which penetrates the cleaning agent, can be used advantageously when cleaning the sedimentation system. For this purpose, a suction hose can be inserted through the maintenance pipe into the sedimentation system, with which sediment, dirt and other substances deposited there are sucked off. This enables simplified cleaning of the sedimentation system.
It is also possible to flush the sedimentation system by inserting a flushing hose into the maintenance pipe and to clean it in this way.

The sedimentation system of the present invention can advantageously be designed in one or more parts.
In particular, it can be provided that this is designed in two parts with a base part and a functional part connected to the base part in a fluid-tight manner. In this way, the manufacture, storage, transport and construction of such a sedimentation system can be simplified.
The bottom part can be designed as a hollow cylinder with a bottom, a perforated screen and an upper open end, wherein the bottom part at the upper open end can be designed so that it can be connected to the functional part in a fluid-tight manner, for which purpose a connection device can be used, for example.
The functional part comprises the inlet, the outlet and the separating element in a component, designed for example as a hollow cylinder, which is attached to its the lower end has a connecting device in order to connect the functional part to the bottom part in a fluid-tight manner.

The sedimentation system for cleaning a fluid is designed with great advantage in such a way that the inlet, the separating element and the drain of the system for sedimentation, as well as the housing forming the container, contain a polymer material or consist of a polymer material. In this context, the polymer material is preferably a thermoplastic polymer material, in particular a polyolefin, and very particularly preferably a polypropylene, a polyethylene or a polybutylene or a copolymer or a blend or a mixture of the aforementioned polymer materials.
Such a sedimentation system, the essential elements of which contain a polymer material or consist of a polymer material, is light, durable, inert to the attack of most of the substances present in a fluid, easy to install and inexpensive. In particular, the elements that make up the sedimentation system can be manufactured and assembled using simple techniques.

The present invention can be modified in various ways.
It is possible to arrange the inlet and outlet at different levels.

The sedimentation system according to the invention for cleaning a fluid is preferably installed underground.
The sedimentation system for cleaning a fluid according to the present invention can have a modular structure in that the housing consists, for example, of a bottom part on which a, for example, approximately hollow-cylindrical functional part is placed in a fluid-tight manner, which can be extended upwards with further approximately hollow-cylindrical components as required and has a head or end piece as the upper end. The head or end piece can be provided with a manhole to provide access to the sedimentation system.
The assembly of the individual parts can take place, for example, in a plug-in system using seals or in a plug-in system using adhesive connections and / or welded connections.
The fixtures in the sedimentation system in the form of the inlet, the walls, the drain and possibly other facilities can be made in a simple manner by drilling, sawing, milling, grooving, welding and gluing techniques, so that the sedimentation system in a simpler way Is wise and inexpensive to manufacture.

The sedimentation system and / or the bottom part and / or the functional part of the present invention can be used in a polymer molding process such as an injection molding process or a rotational molding process or a rotational sintering process or a pressing process or a deep drawing process or an extrusion blow molding process or an additive manufacturing process such as a 3D printing process, or a combination of the processes listed above.
The processes mentioned above are suitable for producing a sedimentation system and / or a base part and / or a functional part according to the present invention in large numbers in a reproducible, dimensionally stable and cost-effective manner.

Alternatively, it can be provided that the sedimentation system and / or the bottom part and / or the functional part is manufactured entirely or partially using a generative manufacturing process, for example by a 3-D printing process. For this purpose, a data processing machine-readable three-dimensional model can advantageously be used for the production.
The invention also comprises a method for generating a data processing machine-readable three-dimensional model for use in a manufacturing method for a sedimentation system and / or a base part and / or a functional part. Here, the method in particular also includes the input of data representing a sedimentation system and / or a floor part and / or a functional part into a data processing machine and the use of the data to create a sedimentation system and / or a floor part and / or a functional part as three-dimensional Represent a model, the three-dimensional model being suitable for use in the production of a sedimentation system and / or a floor part and / or a functional part. The method also includes a technique in which the inputted data of one or more 3D scanners that work either by touch or without contact, with the latter energy being transferred to a sedimentation system and / or a bottom part and / or a functional part and the reflected energy is received, and wherein a virtual three-dimensional model of a sedimentation system and / or a bottom part and / or a functional part is generated using computer-aided design software.
The manufacturing process can be a generative powder bed process, in particular selective laser melting (SLM), selective laser sintering (SLS), selective heat sintering (SHS), selective electron beam melting (electron beam melting - EBM / Electron Beam Additive Manufacturing - EBAM) or solidification of powder material by means of binder (binder jetting). The manufacturing process can be a generative free space process, in particular build-up welding, wax deposition modeling (WDM), contour crafting, Metal powder deposition processes (MPA), plastic powder application processes, cold gas spraying, electron beam welding (EBW), or melt deposition processes such as fused deposition modeling (FDM) or fused filament fabrication (FFF). The manufacturing method can include a generative liquid material method, in particular stereolithography (SLA), digital light processing (DLP), multi jet modeling (MJM), polyjet modeling or liquid composite molding (LCM). Furthermore, the manufacturing method can include other generative layer construction methods, in particular laminated object modeling (LOM), 3D screen printing or light-controlled electrophoretic deposition.

The second object of the invention, to specify a fluid intake, storage or control system with a sedimentation system, is solved by the subject matter of claim 8.
It has been found that a fluid intake, storage or control system with a sedimentation system as described above is extremely advantageous over systems from the prior art and can be operated.

The sedimentation system is used for cleaning a fluid according to the present invention, for example, for cleaning traffic routes and roof surfaces, as well as metal roofs, draining rainwater, in sewage treatment plants, swimming pools, in industry and in the decentralized treatment of contaminated fluids.
Further important features and advantages of the invention emerge from the subclaims, from the figures and from the associated description of the figures.
It goes without saying that the features mentioned above and those yet to be explained below can be used not only in the respectively specified combination, but also in other combinations or on their own, without departing from the scope of the present invention.

• 1 eine Sedimentationsanlage in einer seitlichen Schnittdarstellung;
• 2 die Sedimentationsanlage aus 1 in einer geschnittenen perspektivischen Ansicht;
• 3 die Sedimentationsanlage aus 1 und 2 in einer geschnittenen Aufsicht;
• 4 den Funktionsteil der Sedimentationsanlage in einer seitlichen geschnittenen Ansicht in einer ersten Ausführung;
• 5 den Funktionsteil der Sedimentationsanlage in einer seitlichen geschnittenen Ansicht in einer zweiten Ausführung;
• 6 den Funktionsteil der Sedimentationsanlage in einer seitlichen geschnittenen Ansicht in einer dritten Ausführung;
• 7 den Funktionsteil der Sedimentationsanlage in einer seitlichen geschnittenen Ansicht in einer vierten Ausführung.

Preferred exemplary embodiments of the invention are shown in the figures and are explained in more detail in the following description, with the same reference symbols referring to the same or functionally identical or similar components. This shows:

• 1 a sedimentation plant in a lateral sectional view;
• 2 the sedimentation system off 1 in a sectioned perspective view;
• 3 the sedimentation system off 1 and 2 in a cut top view;
• 4th the functional part of the sedimentation system in a side sectional view in a first embodiment;
• 5 the functional part of the sedimentation system in a side sectional view in a second embodiment;
• 6th the functional part of the sedimentation system in a side sectional view in a third embodiment;
• 7th the functional part of the sedimentation system in a side sectional view in a fourth embodiment.

In the 1 is a sedimentation system 100 shown in a sectional side view. In the 1 is the direction of gravity G shown.

The two-part sedimentation system 100 is installed underground in such a way that in the direction of gravity G the bottom part 119 under the functional part 120 is arranged. In the following, terms for spatial relationships such as "above", "below", "above", "below", "above" and "below" are always with reference to the direction of gravity G to understand.
The sedimentation plant 100 is, as already stated, designed in two parts, with a bottom part 119 and one with the bottom part 119 fluid-tight connected functional part 120 . These together form the container 102 .
Both the bottom part 119 , as well as the functional part 120 have a circular cross-section and are designed as hollow cylinders. The bottom part 119 is closed fluid-tight towards the bottom by a base.
In the functional part 120 is a separator 106 added in the form of a tubular hollow cylinder. Through the separator 106 in the container 102 the sedimentation plant 100 is the fluid intake volume 101 the sedimentation plant 100 in a first section 107 outside the separator 106 and a second section 108 inside the separator 106 divided.
The inflow 103 for the fluid opens tangentially into the first section 107 the sedimentation plant 100 in a section 105 of the container 102 with a circular or approximately circular cross-section.
The outlet opens accordingly 104 from the second section 108 out. The separator 106 has two ends 109, 110, a first end 109 that is above the inlet 103 ends, and a second end 110 that is below the drain 104 ends. The pinhole 111 is designed as a conical envelope section surface, which tapers conically downwards and becomes smaller in its clear width. Through one of the cone jacket section surface of the aperture 111 The limited hole allows sedimented material from the fluid into the underneath the perforated diaphragm 111 trained recording room fall and are recorded there.

In the 2 is the sedimentation plant 100 from the 1 shown in a sectioned perspective view.
The reference symbols in 2 correspond to those from 1 .
The sedimentation plant 100 is, as already in 1 shown, formed in two parts, with a bottom part 119 and one with the bottom part 119 fluid-tight connected functional part 120 that put together the container 102 form.

Both the bottom part 119 , as well as the functional part 120 have a circular cross-section and are designed as hollow cylinders. The bottom part 119 is closed fluid-tight towards the bottom by a base.
In the functional part 120 is a separator 106 added in the form of a tubular hollow cylinder. The separator 106 is through in 2 shown, but not provided with a reference number holding elements in the functional part 120 held.
Through the separator 106 in the container 102 is the fluid intake volume 101 the sedimentation plant 100 in a first section 107 outside the separator 106 and a second section 108 inside the separator 106 structured.
In the 2 is shown that the inlet 103 tangential to the first section 107 joins.
The outlet opens accordingly 104 from the second section 108 out.
In an alternative embodiment of the sedimentation system, not shown here 100 is provided that the inlet 103 tangential to the second section 108 flows in, and accordingly the outlet 104 from the first section 107 empties.
The separator 106 has two ends 109, 110, a first end 109 that is above the inlet 103 ends, and a second end 110 that is below the drain 104 ends. The pinhole 111 is designed as a cone jacket section surface, which tapers conically downwards and becomes smaller in its clear width. Material sedimented from the fluid can enter the receiving space below the perforated diaphragm through a hole delimited by the surface of the conical surface 111 fall and be picked up there. Since there is practically no fluid flow in this area, the sedimented material can no longer be whirled up.

In the 3 is the sedimentation plant 100 from the 1 and 2 shown in a cut plan view.
The reference symbols in 3 corresponding to those from the previous figures.
The separator 106 is concentric in the functional part 120 the sedimentation plant 100 recorded and held.
The path of the fluid through the sedimentation system is indicated by arrows 100 symbolized. The fluid flows through the inlet 103 that is tangent to the first section 107 the fluid intake volume 101 of the container 102 the sedimentation plant 100 joins. This becomes that of the sedimentation system 100 supplied fluid within the first section 107 put into a circulation and migrates downwards in the direction of gravity G .

Inside by the separator 106 from the first section 107 separated second section 108 the fluid intake volume 101 the fluid then rises again while maintaining the circulation and leaves the sedimentation system 100 through the process 104 .

In the 4th is the functional part 120 the sedimentation plant 100 shown in a side sectional view in a first embodiment.
The reference symbols in 4th corresponding to those from the previous figures. Inside the separator 106 is on a bracket 115 a sieve 114a held. The sieve 114a has a disk shape and has openings in the wall in the form of circular holes or elongated slots. Alternatively, such a sieve 114a but also consist of a fabric, in particular a wire, plastic or textile fabric.
Material carried along in the fluid, such as leaves and coarse dirt, is removed from the sieve 114a held back and can in the receiving space, not shown here, under the aperture plate 111 migrate when the flow of the fluid ceases.
Optionally can be placed on the sieve 114a a detergent 116 be included, which comes into contact with the fluid when it flows and in this way unfolds its cleaning effect.
It is preferably on the sieve 114a a device attached, for example a hook or an eye, not shown here, to the sieve if necessary 114a for cleaning, inspection and maintenance, or for replacement from the separating element 106 can be found.
At the second end 110 of the separator 106 are notches in regular succession along the entire circumference 112 formed in a V-shape, between each of which a tip 113 is formed.

In the 5 is the functional part 120 the sedimentation plant 100 shown in a side sectional view in a second embodiment.
The reference symbols in 5 corresponding to those from the previous figures. Inside the separator 106 is on a bracket 115 a sieve bucket 114b held. The sieve bucket 114b has the shape of a bucket and has openings in the side wall and in the bottom surface in the form of circular holes or elongated slots.

Material carried along in the fluid, such as leaves and coarse dirt, is removed from the sieve bucket 114b held back and can in the receiving space, not shown here, under the aperture plate 111 migrate when the flow of the fluid ceases.
Optionally in the sieve bucket 114b a detergent 116 be included, which comes into contact with the fluid when it flows and in this way unfolds its cleaning effect.
In a preferred manner is on the sieve bucket 114b a device attached, for example a hook or eye, not shown here, to the sieve bucket if necessary 114b for cleaning, inspection and maintenance, or for replacement from the separating element 106 can be found.

In the 6th is the functional part 120 the sedimentation plant 100 shown in a side sectional view in a third embodiment.
The reference symbols in 6th corresponding to those from the previous figures.
The separator 106 the sedimentation plant 100 is in the functional part shown 120 conical shape, the clear width to the second end 110 becomes smaller.
At the second end 110 of the conical separating element 106 are notches in regular succession along the entire circumference 112 formed in a V-shape, between each of which a tip 113 is formed.

In the 7th is the functional part 120 the sedimentation plant 100 shown in a side sectional view in a fourth embodiment.
The reference symbols in 7th corresponding to those from the previous figures.
This version is inside the separating element 106 a cartridge 117 arranged in which the detergent 116 is included. The cartridge 117 is designed so that the fluid can flow through it and comes into contact with the cleaning agent 166.
It is preferably on the cartridge 117 a device is attached, for example a hook or an eyelet, not shown here, to remove the cartridge from the separating element for cleaning, inspection, maintenance or replacement if necessary 106 can be found.
In the 7th is shown in dashed lines that a service pipe 118 can be provided which the cleaning agent 116 in the cartridge 117 penetrates, so that an access from above through the maintenance pipe 118 to under the cartridge 117 located space is made possible.

Through the service pipe 118 material that has accumulated in the space under the cartridge due to sedimentation, for example, can be sucked off with the aid of a suction hose. The sedimentation system can also be rinsed with the aid of a rinsing hose.

List of reference symbols

100

Sedimentation device

101

Fluid holding volume

102

container

103

Intake

104

procedure

105

Section

106

Separator

107

first section

108

second part

109

first end

110

second end

111

Pinhole

112

notch

113

top

114a

Sieve

114b

Sieve Bucket

115

bracket

116

cleaning supplies

117

cartridge

118

Maintenance pipe

119

Bottom part

120

Functional part

G

Direction of gravity

Claims (8)

Sedimentation system (100) for cleaning a fluid in a fluid receiving volume (101), wherein the sedimentation system (100) can be flowed through by the fluid, with a container (102) having an inlet (103) for the fluid and an outlet (104) for comprises the fluid, the inlet (103) for the fluid opening tangentially into a section (105) of the container (102) with a circular or approximately circular cross-section, a separating element (106) being arranged in the container (102) which is tubular and through which the fluid receiving volume (101) of the container (102) is divided into a first section (107) outside the separating element (106) and a second section (108) inside the separating element (106), the inlet (103 ) for the fluid opens either into the first section (107) or into the second section (108), and the drain (104) for the fluid is arranged such that it opens out from the second section (108) when the inlet (103) opens into the first section (107), or that it opens out from the first section (107) when the inlet (103 ) opens into the second section (108), and wherein the separating element (106) has two ends (109, 110), a first end (109) which ends above the inlet (103), and a second end (110), which ends below the drain (104), and a funnel-shaped perforated screen (111) which is arranged below the second end (110) of the separating element (106). Sedimentation system (100) after Claim 1 , characterized in that the second end (110) of the separating element (106) has notches (112). Sedimentation system (100) after Claim 1 or 2 , characterized in that the separating element (106) has a conical shape, the clear width of which becomes smaller towards the second end (110). Sedimentation system (100) according to one of the preceding claims, characterized in that in the separating element (106) a removable or permanently installed sieve (114a) on a holder (115) provided for this purpose or a removable sieve bucket (114b) on a holder provided for this purpose ( 115) is included. Sedimentation system (100) according to one of the preceding claims, characterized in that a cleaning agent (116), in particular a cleaning agent (116) in granulate form, in the separating element (106) on the sieve (114a) or in the sieve bucket (114b) or in Is added in the form of a cartridge (117). Sedimentation system (100) after Claim 5 , characterized in that a maintenance pipe (118) is arranged which penetrates the cleaning agent (116). Sedimentation system (100) according to one of the preceding claims, characterized in that it is constructed in one or more parts, in particular that it is constructed in two parts with a base part (119) and a functional part (120) connected to the base part (119) in a fluid-tight manner. Fluid intake, storage or control system with a sedimentation system (100) according to one of the Claims 1 to 7th .

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