DE102020118804A1 - Separating device and method for producing a separating device - Google Patents

Abstract

The present invention relates to a separating device (10) with at least one inlet (11) for a contaminated liquid, in particular waste water containing fat, and a receiving body (12) which has at least one first chamber (13) for receiving the contaminated liquid and at least one second chamber (14) for receiving the cleaned liquid, the inlet (11) opening into the first chamber (13) and the first chamber (13) being fluidically connected to the second chamber (14) for transferring the cleaned liquid, the two chambers (13, 14) are separated from one another by at least one partition (15) which is formed integrally with the receiving body (12). Furthermore, the invention relates to a manufacturing method.

Description

The invention relates to a separating device and a method for producing a separating device.

Separating devices are necessary in many canteen kitchens, gas stations and other businesses to separate fat from (waste) water before the cleaned water gets into the sewage system.

Separating devices are known from the prior art, which, particularly in the case of an underground application, comprise a plurality of structures. For example, a first structure is often provided for separating fat from (waste) water, a second structure for sampling the cleaned water and a third structure for a lifting plant or pumping station. Separating devices of this type have an increased space requirement and increased production and assembly costs.

In order to overcome these disadvantages, separating devices have been developed which enable fat separation, sampling and the arrangement of a lifting station in a single structure. Separating devices of this type often have a concrete shaft as the base body and separate components for dividing the interior of the concrete shaft. However, the production of the basic structure of the separating device is complex here.

From the U.S. 9,932,247 B1 For example, a fat separating device is known which has a tank-shaped base body and a horizontal baffle made of plastic. The baffle serves to calm the flow of the inflowing waste water and forms a separate component that is installed in the base body. There is thus an increased assembly effort.

Furthermore, from the WO 01/83307 A1 a hydraulic tank made of plastic is known, which is intended for use in a hydraulic system, for example of machines. The hydraulic tank has a baffle wall, which is designed as a protrusion in the tank housing and protrudes halfway into the interior of the tank housing. The baffle is formed in one piece with the tank housing. The baffle serves to homogenize the flow in the hydraulic tank.

The invention is based on the object of specifying a separating device which has a compact design and can be produced easily and inexpensively. Furthermore, the invention is based on the object of specifying a method for producing a separating device.

According to the invention, this object is achieved with regard to the separating device by the subject matter of claim 1. With regard to the method, the above object is achieved by the subject matter of claim 15 or 16, respectively.

Specifically, the object is achieved by a separating device with at least one inlet for a contaminated liquid, in particular greasy water, and a receiving body which has at least a first chamber for receiving the contaminated liquid and at least a second chamber for receiving the cleaned liquid. The inlet opens into the first chamber. The first chamber is fluidly connected to the second chamber for transferring the cleaned liquid. The two chambers are separated from one another by at least one partition. The partition wall is formed integrally with the receiving body.

The separating device preferably serves to separate a liquid mixture, in particular greasy (waste) water. The separating device is preferably used to separate fats from water. The separating device can generally be referred to as a fat separating device.

In the context of the invention, the contaminated liquid is referred to as greasy (waste) water and the cleaned liquid as cleaned water. Fatty water is a liquid mixture that has a water content and at least one fat content. Purified water means water from which the fat content has been separated.

The invention is not limited to the separation of fat from water. It is possible that the separating device can be used to separate light liquids, such as oil, petrol and/or diesel, from a liquid, in particular water. Other areas of application are possible.

The receiving body has the first chamber and the second chamber, which are separated from each other by the partition wall. In other words, the receiving body is designed as a hollow body, with the partition wall dividing an interior space of the receiving body into the first chamber and the second chamber.

The first chamber is used to hold the water containing fat and to separate the fat from the water. During operation, the greasy water flows through the inlet into the first chamber of the receiving body. In the first chamber takes place Separation of the fat from the water. The fat settles on the water surface in the first chamber. In other words, the portion of fat contained in the water containing fat rises to the surface of the water in the first chamber and forms a layer of fat that floats on the portion of water below. The water content corresponds to the cleaned liquid, which is then transferred to the second chamber. For this purpose, the two chambers are fluidly connected to one another.

The second chamber is used to receive the purified water from the first chamber. Furthermore, the second chamber serves to collect the purified water. The water collected can be discharged from the second chamber by at least one conveying device, in particular a lifting system. For this purpose, the conveying device can be arranged in the second chamber. The delivery device can be a pumping station, for example, which pumps the cleaned water out of the second chamber during operation. In addition, the second chamber is used for sampling the cleaned water.

The separating device according to the invention has a compact design due to the described chamber structure of the receiving body, which makes it possible to separate fat from water, take a sample of the cleaned water and integrate a conveyor device for discharging the cleaned water into a sewage system in a small space.

The partition separates the two chambers from each other. In other words, the partition wall is arranged between the two chambers. The partition wall is designed in such a way that, during operation, fat separated from the fat-containing water is held in the first chamber and the cleaned water can flow into the second chamber. The dividing wall thus separates the first chamber from the second chamber, which dividing wall, in use, prevents the flow of separated fat from the first chamber into the second chamber and at the same time allows a flow of purified water from the first chamber into the second chamber.

In the separating device according to the invention, the dividing wall is formed integrally with the receiving body. In the context of the invention, the integral formation of the partition wall with the receiving body means that the partition wall is part of the receiving body.

The dividing wall is particularly preferably configured monolithically with the receiving body. In other words, the partition wall can be designed in one piece with the receiving body. The partition wall and the receiving body form a single piece here, which is formed from a common starting material. The partition here forms part of the receiving body. More specifically, the partition can form a formation of the receiving body that separates the first chamber from the second chamber.

The partition wall and the receiving body are preferably formed from the same material. The partition wall and the receiving body each have a material structure that is the same, in particular in the transition area between the partition wall and the receiving body. The receiving body and the partition wall are particularly preferably formed by a joint rotational molding step. It is advantageous here that the receiving body and the dividing wall are formed together and thus the manufacturing effort and the manufacturing costs are reduced.

Alternatively, the partition can be a separate component that is integrated into the receiving body. The dividing wall can be connected to the receiving body in a form-fitting and/or force-fitting and/or material-fitting manner. The partition wall can be rotated into the receiving body as a separate component, i.e. in a rotational molding process it can be pre-positioned in a rotary tool before the rotational molding step and integrated into the generated shape of the receiving body by the rotational molding step. In other words, the partition wall can be positively connected to the receiving body by rotating it in. Alternatively or additionally, the partition wall can be glued and/or welded and/or screwed to the receiving body. Other types of connections are possible.

The partition wall preferably extends over the entire cross section of the receiving body. It is possible for the partition wall to partially extend across the cross section of the receiving body. In the installed position, the partition wall can extend at least over half the cross section of the receiving body.

Preferred embodiments of the invention are given in the subclaims.

In a particularly preferred embodiment, the receiving body and the partition are rotationally molded together. In other words, the receiving body and the partition wall are formed together by rotational molding. Preferably, the accommodating body and the partition wall are integrally formed by rotational liquid molding. Alternatively, the receiving body and the partition wall can be formed together by rotational sintering.

In the rotational molding process, at least one liquid or powdered starting material is introduced into a rotary tool. Before the rotational molding step, several liquid or powdered individual components of the starting material or several liquid or powdered starting materials can be mixed outside of the rotary tool and then introduced into the rotary tool as a reaction mixture. The reaction or polymerisation takes place under the influence of heat in the rotary tool. Alternatively, it is possible to introduce several liquid starting materials separately into the rotary tool and to mix them into a reaction mixture in the rotary tool. The rotary tool is moved to distribute the starting material in the rotary tool. At least one core may be placed in the rotary tool prior to the rotary forming step to form the shape of the partition wall. The partition wall is preferably double-walled.

After the starting material has solidified by cooling, the receiving body with the partition wall formed is removed from the mold. In this case, the receiving body and the partition wall are designed to be stress-free with one another. In other words, the partition with the receiving body is designed to be essentially stress-free. In rotational molding, a virtually stress-free receiving body with an integral partition wall is produced at atmospheric pressure, since the starting material introduced is subjected to practically no stress during the molding process and during curing.

The wall thickness of the receiving body and the partition wall can be changed if necessary without changing the tool by adjusting the process parameters and the amount of starting material.

The rotary tooling required for rotational molding is relatively inexpensive, so manufacturing costs are reduced.

In a further special embodiment, the receiving body and the dividing wall are made of plastic, in particular of polyethylene. This has the advantage that the receiving body with the partition wall can be manufactured more easily. Furthermore, plastic allows a complex shape of the receiving body and the partition. Furthermore, the separating device has a low weight as a result, so that installation and transport are simplified.

In a preferred embodiment, the receiving body is designed in one piece or in two pieces. In other words, the receiving body can be designed as a single part with the partition wall. Alternatively, the receiving body can be composed of two parts. Here, the partition is preferably also formed in two parts. The one-piece design simplifies the production of the separating device due to the reduction in components, whereas the two-part design enables a modular design of the separating device. For example, this enables different configurations of the receiving body in relation to the two chamber volumes.

More preferably, the receiving body is formed from at least two body elements, with the first body element having the first chamber and the second body element having the second chamber, and the two body elements being connected to one another to form the receiving body. The two body elements each form a hollow body which has the respective chamber. In other words, the receiving body is designed in two parts, with the two body elements each forming part of the receiving body. The two body elements can each be formed monolithically. The respective body element is preferably formed by rotational molding, in particular rotational liquid molding or rotational sintering. According to this embodiment, the receiving body is composed by the two body members. This has the advantage that the body elements can be connected to one another in different configurations, thus increasing the variety of variants of the receiving body and the separating device. Furthermore, the mounting body, which is divided into two parts, makes installation and transport easier.

The two body elements can be connected to one another in a form-fitting and/or force-fitting and/or cohesive manner. The two body elements can have at least one form-fitting contour, through which the body elements are connected to one another in a form-fitting manner. It is possible for the two body elements to be positively connected to one another by plugging them together. Additionally or alternatively, the two body elements can be screwed and/or welded to one another.

In a preferred embodiment, the partition is formed in two parts, the first part of the partition being integral with the first body member and the second part of the partition being integral with the second body member. In other words, preferably the first portion of the partition is monolithic with the first body member and the second portion of the partition is monolithic with the second body member. The respective part of Partition wall is preferably formed integrally with the associated body member.

The respective parts of the partition each form part of the associated body element. The respective part of the partition may form an end wall of the respective body member. In concrete terms, the first part of the partition wall can form a first end wall of the first body element, the second part of the partition wall can form a second end wall of the second body element arranged opposite the first end wall. The first part of the partition is preferably rotationally molded together with the first body member. Furthermore, the second part of the partition is preferably rotationally molded together with the second body member. It is advantageous here that the body elements and associated parts of the partition wall are formed together, thus simplifying manufacture and reducing manufacturing costs.

The two parts of the partition wall are preferably connected to one another in a positive and/or non-positive manner, so that the two chambers are fluidly connected. The two parts of the partition wall are particularly preferably screwed together. In other words, the two end walls of the body elements can be screwed together to form the partition and the receiving body. Alternatively or additionally, the two end walls arranged opposite one another can be welded and/or glued to one another. In addition, the two parts of the partition wall can each have at least one form-fitting contour, which is designed to be complementary to one another. As a result, a plug-in connection can be produced, which increases the overall stability of the receiving body and simplifies the assembly of the parts. By connecting the two parts of the partition, the receiving body as such can be assembled in a simple manner.

The partition wall preferably has at least one first passage opening which fluidly connects the first chamber to the second chamber, the cleaned water flowing from the first chamber into the second chamber through the first passage opening during operation. The first passage opening preferably runs transversely to the partition wall, in particular in the longitudinal direction of the receiving body, and penetrates the partition wall completely. In the installed position, the first passage opening can be arranged in the upper third of the interior height of the two chambers. The first passage opening can be formed by a tube embedded in the partition wall or by a molded-in opening. The first through hole may be formed with the receiving body and the partition wall by rotational molding.

The first passage opening preferably has a lower edge which, during operation, defines a maximum liquid level of the cleaned liquid, in particular of the cleaned water, in the first chamber. In other words, the liquid level or the water level, which defines the boundary between the floating fat layer and the cleaned water located underneath, is essentially at the height position of the lower edge. During operation, the cleaned water can flow from the lower edge of the first chamber into the second chamber.

In a further preferred embodiment, the dividing wall has a second passage opening which connects the two chambers to one another for ventilation of the receiving body. In the installed position, the second passage opening is preferably formed at a maximum vertical position of the interior of the receiving body. As a result, the interior, i.e. the respective chamber volume, can be used to the maximum. It is advantageous here that the ventilation of the two chambers reduces undesirable outgassing or odors.

The receiving body is preferably elongate, with the partition wall separating the two chambers from one another in the longitudinal direction. In other words, the partition wall extends transversely to the longitudinal direction. The receiving body preferably forms a lying container which is essentially a hollow volume body with a longitudinal extension. Advantageously, in particular when the separating device is buried in the ground, an increased overall size is advantageously made possible because the separating device can be arranged at a constant depth level. This makes it easier to install such separating devices.

The receiving body can have an oval cross section. Alternatively or additionally, the receiving body can have a cylindrical or angular cross-section, in particular a rectangular shape. Specifically, the longitudinal extension of the receiving body can be oval. It is possible that the longitudinal extent of the receiving body is additionally or alternatively designed to be cylindrical or angular.

In a preferred embodiment, the receiving space has at least two maintenance openings, with a first maintenance opening opening into the first chamber and a second maintenance opening opening into the second chamber. In other words, the first chamber is through the first maintenance opening and the second chamber through the second maintenance opening accessible. The maintenance openings can each be releasably closed by a shaft cover. The maintenance openings can each be formed on an extension of the receiving body. These extensions are preferably rotationally molded together with the receiving body.

In addition, at least one conveying device, in particular a lifting system, can be arranged in the second chamber in order to discharge the cleaned liquid or the cleaned water from the second chamber during operation. During operation, the cleaned water is pumped out of the second chamber by the conveyor and disposed of in a connected sewage system. The conveying device can be formed by at least one pumping station, in particular a submersible pump. The pumping device allows the cleaned water to be discharged quickly and easily if required, without the need for manual intervention by maintenance personnel.

In a preferred embodiment, the separating device is designed in such a way that it meets the strength requirements of load class EN 1825-SLW 60. At least the receiving body is preferably designed in such a way that the separating device meets the strength requirements of stress class EN 1825-SLW 60.

According to the independent claim 15, the invention relates to a method for producing a separating device which comprises at least one inlet for a contaminated liquid, in particular waste water containing fat, and a receiving body. The receiving body has at least a first chamber for receiving the contaminated liquid and a second chamber for receiving the cleaned liquid, the inlet opening into the first chamber and the first chamber being fluidically connected to the second chamber for transferring the cleaned liquid. The two chambers are separated from one another by at least one partition. The partition is integrally formed with the receptacle body by a rotational molding process.

According to the independent claim 16, the invention relates to a method for producing a separating device which comprises at least one inlet for a contaminated liquid, in particular waste water containing fat, and a receiving body. The receiving body has a first body element with a first chamber for receiving the contaminated liquid and a second body element with a second chamber for receiving the cleaned liquid. The two body members each have part of a partition separating the two chambers. The two body members are each formed by a rotational molding process. Furthermore, the two body elements formed are connected to one another so that the partition wall is formed and the two chambers are fluidly connected to one another.

In a preferred embodiment of the method according to the invention, the respective body element is formed integrally with the part of the partition wall by the rotational molding process.

In a further preferred embodiment of the method according to the invention, the two body elements are connected to one another in a positive and/or non-positive manner, in particular by screwing. Alternatively or additionally, the two body elements can be connected to one another in a materially bonded manner.

With regard to the advantages of the method for producing a separating device, reference is made to the advantages explained in connection with the separating device. In addition, the methods can alternatively or additionally have individual features or a combination of several features mentioned above in relation to the separating device.

The invention will be explained in more detail below with reference to the accompanying drawings. The illustrated embodiments represent examples of how the separating device according to the invention can be configured.

• 1 eine Seitenansicht einer Abscheidevorrichtung nach einem bevorzugten erfindungsgemäßen Ausführungsbeispiel;
• 2 eine Draufsicht der Abscheidevorrichtung gemäß 1;
• 3 einen Querschnitt der Abscheidevorrichtung gemäß 1 entlang einer Schnittlinie A-A;
• 4 eine Detailansicht eines Teilschnitts der Abscheidevorrichtung gemäß 1;
• 5 eine perspektivische Ansicht eines Ausschnitts der Abscheidevorrichtung gemäß 1, im Bereich einer Trennwand.
• 6 eine Seitenansicht einer Abscheidevorrichtung nach einem weiteren erfindungsgemäßen Ausführungsbeispiel;
• 7 eine Draufsicht der Abscheidevorrichtung gemäß 6.
• 8 einen Querschnitt der Abscheidevorrichtung gemäß 6 entlang einer Schnittlinie A-A;
• 9 eine Detailansicht im Bereich einer Trennwand der Abscheidevorrichtung gemäß 6;
• 10 eine perspektivische Ansicht eines ersten Teils der Trennwand der Abscheidevorrichtung gemäß 6; und
• 11 eine perspektivische Ansicht eines zweiten Teils der Trennwand der Abscheidevorrichtung gemäß 6.

In these show

• 1 a side view of a separating device according to a preferred embodiment of the invention;
• 2 a plan view of the separating device according to FIG 1 ;
• 3 according to a cross section of the separator 1 along a cutting line AA;
• 4 a detailed view of a partial section of the separating device according to FIG 1 ;
• 5 a perspective view of a section of the separating device according to FIG 1 , in the area of a partition wall.
• 6 a side view of a separating device according to a further embodiment of the invention;
• 7 a plan view of the separating device according to FIG 6 .
• 8th according to a cross section of the separator 6 along a cutting line AA;
• 9 a detailed view in the area of a partition wall of the separating device according to FIG 6 ;
• 10 a perspective view of a first part of the partition wall of the separating device according to FIG 6 ; and
• 11 a perspective view of a second part of the partition wall of the separating device according to FIG 6 .

In the following, the same reference numerals are used for the same and identically acting parts.

1 until 5 show a separating device 10 according to a preferred embodiment of the invention. The separating device 10 is used to clean contaminated (waste) water, in the case of water containing fat the fat content is separated from the water content and the cleaned water is discharged into a waste water system. The separating device 10 can generally be referred to as a fat separator.

The separating device 10 is not limited to use for separating fat from water. It is possible that the separating device 10 can also be used to separate light liquids, such as oil, petrol or diesel from a liquid.

As in the 1 and 2 is shown, the separating device 10 has an inlet 11 for contaminated water and a receiving body 12 . The inlet 11 is formed monolithically with the receiving body 12 . The receiving body 12 is designed as a hollow body. In other words, the receiving body 12 has an interior space 25 . The receiving body 12 has a first chamber 13 for receiving the contaminated water and a second chamber 14 for receiving the cleaned water, which are arranged in the interior 25 . The first chamber 13 serves to receive the contaminated water and to separate fat from the water. The second chamber 14 is used to receive the cleaned water from the first chamber 13, to sample the cleaned water and to arrange a conveying device, not shown, in particular a lifting system.

The inlet 11 opens into the first chamber 13. Furthermore, the first chamber 13 and the second chamber 14 are separated from one another by a partition wall 15, which is formed integrally with the receiving body 12. The partition wall 15 will be discussed in more detail later.

The receiving body 12 also includes a drain connection 26 through which the purified water collected in the second chamber 14 can be discharged into a waste water system. The drain port 26 is monolithically formed with the receiving body 12 .

The receiving body 12 has an elongated shape extending along a longitudinal direction. In other words, the receiving body 12 extends along a longitudinal axis. The receiving body 12 has a substantially oval cross-section along the length of the elongate shape. Alternatively or additionally, the receiving body 12 can have a substantially cylindrical and/or angular, in particular rectangular, cross-section over the length of the elongate shape.

Furthermore, the receiving body 12, as in the 1 and 2 is clearly visible, several ribs 27 which are designed to stiffen the receiving body 12. The ribs 27 are formed by moldings of the receiving body 12 . In other words, the ribs 27 are part of the accommodating body 12, ie are monolithically formed with the accommodating body 12. The ribs 27 are distributed uniformly in the longitudinal direction on the outer circumference of the receiving body 12 . Due to the ribs 27, the receiving body 12 has a wavy shape on the outer circumference in the longitudinal direction.

The receiving body 12 also includes two maintenance openings 24, the first maintenance opening 24' being assigned to the first chamber 13 and the second maintenance opening 24" being assigned to the second chamber 14. The receiving body 12 has two shaft extensions 28, each with a maintenance opening 24 in one of the shaft extensions 28. The maintenance openings 24 are circular, as in FIG 2 is shown. Furthermore, the maintenance openings 24 lie on a common longitudinal axis, which coincides with the transverse position of the longitudinal axis of the receiving body 12 or the elongate shape of the receiving body 12 .

The shaft extensions 28 extend perpendicular to the longitudinal direction of the receiving body 12. In other words, the shaft extensions 28 are formed orthogonally to the longitudinal axis of the receiving body 12. The shaft extensions 28 each have an upper edge 28' which is flush with one another.

The first chamber 13 is accessible through the first maintenance opening 24' and the second chamber 14 is accessible through the second maintenance opening 24". cover covered, in particular be releasably closed.

According to the 1 and 2 the separating device 10 is designed as a horizontal tank system. In other words, due to the elongated shape of the receiving body 12, the separating device 10 is designed to be installed lying, in particular horizontally, in the ground. Other installation positions of the separating device 10 are possible.

The receiving body 12 and the partition 15 are made of plastic. Specifically, the receiving body 12 and the partition wall 15 are made of polyethylene. The receiving body 12 is formed in one piece or monolithically with the partition wall 15 . The exception body 12 and the partition wall 12 form a single piece that is free of a subsequent material connection. In other words, the receiving body 12 is formed together with the partition wall 15 by a shaping manufacturing process. Specifically, the receiving body 12 is formed with the partition wall 15 by a rotational molding process, which will be discussed in more detail later.

The partition wall 15 separates the first chamber 13 from the second chamber 14 transversely to the longitudinal direction of the receiving body 12. As in FIG 3 and 5 is shown, the partition wall extends transversely to the longitudinal direction over the entire cross section of the receiving body 12.

The partition wall 15 has two through openings 21, 23 which penetrate the partition wall 15 in the longitudinal direction of the receiving body 12. The first through-opening 21 serves to transfer the purified water from the first chamber 13 into the second chamber 14. The first through-opening 21 connects the two chambers 13, 14 to one another in a liquid-transmitting manner. The first through opening 21 is tubular. Specifically, the first through opening 21 is cylindrical. The first passage opening has a lower edge 22 which defines a maximum liquid level of the cleaned water in the first chamber 13 during operation.

The first passage opening 21 is arranged in an upper area of the partition wall 15 in the installed position. As in 3 is shown, the first through-opening 21 is arranged centrally in relation to the longitudinal axis of the receiving body 12 . In the installed position, the first through-opening 21 is formed above half the length in the vertical direction of the partition wall 15 . In concrete terms, the first through-opening 21 is arranged in the upper third of the total height of the partition wall 15 . In other words, the transverse position of the first through opening 21 coincides with the position of the longitudinal axis of the receiving body 12.

The second through-opening 23 is used to ventilate the two chambers 13, 14. The second through-opening 23 forms a recess between an inner circumference 29 of the receiving body 12 and an upper edge 31 of the partition 15. In other words, the second through-opening 23 forms a free space between the inner circumference 29 and the upper edge 31 of the partition wall 15, which connects the two chambers 13, 14 to one another for ventilation.

The second passage opening 23 is formed centrally in relation to the longitudinal axis of the receiving body 12 . Furthermore, the second through opening 23 is formed in the installed position in the longitudinal direction in the region of the partition wall 15 at the highest point in relation to the total height of the interior space 25 at this longitudinal axial position.

According to the 1 and 4 the partition wall 15 is double-walled. The solid line represents the detail contour of a partial section TS, which intersects the receiving body 12 in the area of the partition wall 15 for better representation.

As in the detailed view of the partial section TS according to 4 As specifically shown, the partition 15 has a first portion 15' and a second portion 15''. The first portion 15' faces the first chamber 13 and the second portion 15'' faces the second chamber 14. The two sections 15', 15" are arranged opposite one another and extend parallel to one another. The two sections 15', 15" extend transversely to the longitudinal axis of the receiving body 12.

Furthermore, the two sections 15', 15" each have a wall thickness that is essentially the same. The two sections 15', 15' are spaced apart from one another in the longitudinal direction of the receiving body 12. In other words, between the two sections 15', 15" a distance provided.

The two sections 15', 15" have, as in 1 and 4 clearly recognizable, several webs 32, which run in the longitudinal direction of the receiving body 12 between the two sections 15', 15". The webs 32 are part of the two sections 15', 15", in which the two sections 15', 15" into one another The webs 32 are spaced apart from one another transversely to the longitudinal direction.The webs 32 extend transversely to the longitudinal direction of the receiving body 12. This is indicated by the rear indentations 34 in 3 and 5 to recognize. The webs 33 are mainly used to stiffen the partition wall 15, for example, an impermissible deformation to prevent during installation or transport of the separating device 10.

A plurality of gaps 33 are formed between the two sections 15′, 15″, which completely penetrate the partition wall 15 transversely to the longitudinal direction of the receiving body 12. The gaps 33 each form a free space.

Furthermore, the two sections 15′, 15″ are connected to one another in the area of the upper edge 31 of the partition wall 15. Specifically, the two sections 15′, 15″ merge into one another in the area of the upper edge 31 of the partition wall 15.

The receiving body 12 also has a bottom 34 which forms the bottom 34 of the chambers 13, 14 in each case. In the area of the floor 34 of the respective chamber 13, 14, the section 15', 15'' of the partition wall 15 facing the chamber 13, 14 transitions into the respective floor 34 of the chamber 13, 14. The partition wall 15 and the floor 34 can have the same have wall thickness.

The partition wall 15 thus forms a U-shaped indentation in a longitudinal section of the receiving body 12, which extends into the interior space 29 of the exception body 12 and separates the two chambers 13, 14 from one another. Alternatively, the partition wall 15 can also be V-shaped in longitudinal section. Other alternative shapes are possible.

The partition wall 15 is formed integrally with the receiving body 12 . Specifically, the partition wall 15 is monolithically formed with the receiving body 12 . The partition wall 15 is peripherally connected to the inner circumference 29 excluding the second through-opening 23 . this is in 5 clearly visible. Specifically, the two sections 15', 15" merge into the receiving body 12 all the way around the inner circumference 29, except for the area of the second through-opening 23. The partition wall 15 is therefore part of the receiving body 12.

The receiving body 12 and the partition wall 15 are made of plastic, in particular polyethylene, by means of rotational molding.

The production of the separation device 10 described above is described below using a rotational molding method. In this case, the receiving body 12 with the partition 15 and the inlet 11, outlet connection 26, the ribs 26 and the shaft extensions 28 are formed monolithically or in one piece.

The separating device 10 according to FIG 1 until 5 may be formed by a rotational liquid molding process or by rotational sintering.

In the rotational molding process, at least one liquid or powdered starting material made of plastic, in particular polyethylene, is introduced into a rotary tool. Before the rotational molding step, several liquid or powdered individual components of the starting material or several liquid or powdered starting materials can be mixed outside of the rotary tool and then introduced into the rotary tool as a reaction mixture.

The reaction or polymerisation takes place under the influence of heat in the rotary tool. Alternatively, it is possible to introduce several liquid starting materials separately into the rotary tool and to mix them into a reaction mixture in the rotary tool. The rotary tool is moved to distribute the starting material in the rotary tool. To form the shape of the partition wall 15 and the other shapes, for example the inlet 11, the ribs 26, etc., at least one core can be arranged in the rotary tool before the rotary molding step.

After the starting material has solidified by cooling, the receiving body 12 with the partition wall 15 formed is removed from the mold. The receiving body 12 then also has the inlet 11 , the ribs 27 , the shaft extensions 28 and the outlet connection 26 . In other words, the receiving body 12 with the partition 15 and the inlet 11, the ribs 27, the shaft extensions 28 and the outlet connection 26 are rotationally molded together. In particular, the receiving body 12 and the partition wall 12 are designed to be stress-free with one another, in particular essentially stress-free. In the case of rotational molding, a virtually stress-free receiving body 12 with an integral partition wall 15 is produced at atmospheric pressure, since the starting material introduced is subjected to practically no stresses during the molding process and during hardening.

The partition wall 15 is formed integrally with the receiving body 12 by the rotational molding process.

6 until 11 show a separating device 10 according to a further embodiment of the invention. The separating device 10 according to the 6 until 11 corresponds in the basic form essentially to that of the separating device 10 according to FIG 1 until 5 . The separating device 10 according to FIG 6 until 11 differs only in that the receiving body 12 and the partition 15 are formed in two parts. On the description of elements, parts and forming the separating device according to FIG 6 until 11 , which are in accordance with those of the separating device 10 1 until 5 are identical, will be omitted in the following description. For this purpose, reference is made to the description of the separating device 10 according to FIG 1 until 5 referred.

As described above, the receiving body 12 of the separating device 10 according to 6 until 11 formed in two parts. 6 and 7 essentially show the basic form of the separating device 10 already described above.

The receiving body 12 has two body elements 16 , 17 , the first body element 16 enclosing the first chamber 13 and the second body element 17 enclosing the second chamber 14 . Specifically, the first body member 16 has a first interior space 25 ′ that forms the first chamber 13 . Furthermore, the second body element 17 has a second interior space 25" which forms the second chamber 14. The two body elements 16, 17 are connected to one another to form the receiving body 12. The receiving body 12 is thus formed by the two body elements 16, 17.

The two body members 16, 17 are each formed by a rotational molding process which will be discussed in more detail later.

The partition wall 15 separates the first chamber 13 from the second chamber 14 transversely to the longitudinal direction of the receiving body 12. As in FIG 10 and 11 shown, the partition wall 15 extends transversely to the longitudinal direction over the entire cross section of the receiving body 12.

According to 6 until 11 the partition 15 is formed in two parts. Specifically, a first portion 18 of the partition 15 is integral with the first body member 16 and a second portion 19 of the partition 15 is integral with the second body member 17 . In other words, the first portion 18 of the partition 15 is monolithic with the first body member 16 and the second portion 19 of the partition 15 is monolithic with the second body member 17 . The respective parts 18, 19 of the partition wall 15 each form part of the associated body element 16, 17.

The parts 18, 19 of the partition wall 15 each form an end wall 35 of the associated body element 16, 17, at which the body elements 16, 17 are connected to one another. The two end walls 35 each form the longitudinal ends of the body elements 16, 17. Specifically, the first part 18 of the partition wall 15 forms a first end wall 35' of the first body element 16 and the second part 19 of the partition wall 15 forms a second end wall 35 arranged opposite the first end wall 35' " of the second body member 17. The first part 18 of the partition 15 is integrally rotationally molded with the first body member 16 of the receiving body 12. Furthermore, the second part 19 of the partition 15 is integrally rotationally molded with the second body member 17.

The parts 18, 19 of the partition 15 are arranged facing each other. The two parts 18, 19 of the partition wall 15 are arranged opposite one another and rest against one another. The two parts 18, 19 of the partition 15 are positively and non-positively connected to one another, so that the two chambers 13, 14 are fluidly connected. As in 9 is clearly visible, the two parts 18, 19 and thus the two body elements 16, 17 are screwed together. For this purpose, the parts 18, 19 of the partition 15 have a plurality of pockets 36, which are each formed as a recess on the circumference of the parts 18, 19. Each two of the pockets 36 of the two parts 18, 19 are formed opposite each other in the longitudinal direction. The pockets 36 have contact surfaces 37 facing one another, through which a common connection opening, as in FIG 10 and 11 is shown, is designed for the arrangement of a screw connection. According to 9 it can be seen that the two parts 18, 19 are firmly connected to one another by a screw connection.

The two parts 18, 19 of the partition wall 15 have a plurality of pockets 36 distributed on the outer circumference. In other words, the two parts 18, 19 and thus the two body elements 16, 17 are screwed together at a number of points on the outer circumference of the partition wall 15.

As in 8th and 10 is shown, the first part 18 of the partition wall 15 has transverse projections 38 which project outwards in the longitudinal direction of the receiving body 12 . Specifically, the first part 18 of the partition 15 has a total of five transverse extensions 38. The first part 18 can also have at least one transverse extension 38. The extensions 38 are rib-shaped. Furthermore, the extensions 38 are spaced apart from one another. The extensions 38 are formed parallel to one another. The extensions 38 can also be formed at an angle to one another.

Furthermore, the first part 18 of the partition wall 15 has two extensions 39 running perpendicularly to the longitudinal axis of the receiving body 12 and protruding outwards in the longitudinal direction. The first part 18 can also have at least one vertical extension 39 . The extensions 39 are rib-shaped. Furthermore, the extensions 39 are spaced apart from one another. the Extensions 39 are formed parallel to each other. A first passage opening 21 is formed between the two extensions 39, through which sewage treated during operation flows from the first chamber 13 into the second chamber 14. In the installed position above the first passage opening 21, the first part 18 of the partition wall 15 has a second passage opening 23, which is used to ventilate the two chambers 13, 14.

The second part 19 of the partition wall 15 has a plurality of indentations 41 which are designed to be complementary to the extensions 38, 39. When the two body elements 16, 17 are assembled, the two parts 18, 19 with the extensions 38, 39 and the indentations 41 form a plurality of form-fitting connections. In other words, the two body elements 16, 17 are positively connected to one another via the extensions 38, 39 of the first part 18 of the partition 15 and the indentations 41 of the second part 19 of the partition 15. The two parts 18, 19 of the partition 15 form a plug-in connection. This has the advantage that the two body elements 16, 17 are pre-positioned during assembly, so that the screw connection of the body elements 16, 17 is facilitated. Furthermore, the positive connection increases the stability of the entire receiving body 12 and the partition wall 12.

According to 11 the second part 19 of the partition wall 15 also has through-openings 42 which correspond to the through-openings 21, 23 of the first part 18. The through-openings 42 are enclosed by tubular formations, into which a counterpart engages, for example.

The body elements 16, 17 of the receiving body 12 and the respective part 18, 19 of the partition wall 15 are made of plastic, in particular polyethylene, by means of rotational moulding.

The production of the separating device 10 is described below in accordance with FIG 6 until 11 described. During manufacture, the two body elements 16, 17 of the receiving body 12 are formed independently of one another by a rotational molding process. The two body elements 16, 17 according to the separating device 6 until 11 may each be formed by a rotational liquid molding method or by rotational sintering. The two body elements 16 , 17 are then connected to one another to form the receiving body 12 .

The preparation and introduction of the starting material made of plastic, in particular polyethylene, for the rotational molding takes place as in the production of the receiving body 12 according to the separating device 10 according to FIG 1 until 5 described.

The preparation and introduction of the starting material for the rotational molding takes place as in the production of the receiving body 12 according to the separating device 10 according to FIG 1 until 5 described.

After the starting material has solidified by cooling in the rotary tool, the respective body element 16 , 17 is demolded with the respective part 18 , 19 of the partition 15 . The first body element 16 of the receiving body 12 is thus formed monolithically with the first part 18 of the partition wall 15, in particular in one piece. This also applies to the second body element 17 of the receiving body 12, which is formed monolithically, in particular in one piece, with the second part 19 of the partition wall 15. Furthermore, after the rotational molding, the first body element 16 with the inlet 11, with part of the ribs 26 and the first shaft extension 28 are formed monolithically or in one piece. After the second body element 17 has been rotationally molded, the drain connection 26, the remaining part of the ribs 26 and the second shaft extension 28 are formed monolithically with the second body element 17, in particular in one piece.

Rotational molding integrally molds body members 16, 17 with respective portion 18, 19 of bulkhead 15 at near atmospheric pressure. In other words, the body elements 16, 17 are formed with the respective part 18, 19 of the partition wall 15 in a low-stress manner.

After the two body elements 16, 17 have been rotationally molded, they are connected to one another via the two parts 18, 19 of the partition wall 15. The extensions 38, 39 of the first part 18 of the partition 15 are inserted into the corresponding indentations 42 of the second part 19 of the partition 15. The two parts 18, 19 of the partition wall 15 are then firmly connected to one another by screw connections, so that the receiving body 12 and the partition wall 15 are formed.

Reference List

10

separating device

11

Intake

12

recording body

13

first chamber

14

second chamber

15

partition wall

15'

first section

15''

second part

16

first body element

17

second body element

18

first part of the partition wall

19

second part of the partition

21

first passage opening

22

bottom edge

23

second passage opening

24

maintenance opening

24'

first maintenance opening

24"

second maintenance opening

25

inner space

25'

first interior

25"

second interior

26

drain connection

27

ribs

28

shaft extensions

28'

top edge

29

inner circumference

31

top edge

32

webs

33

split

34

indentation

35

bulkhead

35'

first end wall

35''

second end wall

36

bags

37

contact surfaces

38

transverse processes

39

vertical processes

41

indentation

42

passage opening

TS

partial cut

QUOTES INCLUDED IN DESCRIPTION

This list of documents cited by the applicant was 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.

Patent Literature Cited

• US9932247B1 [0005]
• WO 0183307 A1 [0006]

Claims (18)

Separating device (10) with at least one inlet (11) for a contaminated liquid, in particular waste water containing fat, and a receiving body (12) which has at least one first chamber (13) for receiving the contaminated liquid and at least one second chamber (14) for receiving of the cleaned liquid, the inlet (11) opening into the first chamber (13) and the first chamber (13) being fluidically connected to the second chamber (14) for transferring the cleaned liquid, the two chambers (13, 14) are separated from one another by at least one partition (15) which is integral with the receiving body (12). Separator after claim 1 , characterized in that the receiving body (12) and the partition (15) are rotationally molded together. Separator after claim 1 or 2 , characterized in that the receiving body (12) and the partition (15) are made of plastic, in particular of polyethylene. Separating device according to one of the preceding claims, characterized in that the receiving body (12) is constructed in one piece or in two pieces. Separating device according to one of the preceding claims, characterized in that the receiving body (12) is constructed in one piece with the dividing wall (15). Separating device according to one of the preceding claims, characterized in that the receiving body (12) is formed from at least two body elements (16, 17), the first body element (16) containing the first chamber (13) and the second body element (17) containing the second Chamber (14) and the two body elements (16, 17) to form the receiving body (12) are connected to each other. Separator after claim 6 , characterized in that the partition (15) is formed in two parts, the first part (18) of the partition (15) being integral with the first body member (16) and the second part (19) of the partition (15) being integral with the second body member (17) is integrally formed. Separator after claim 7 , characterized in that the two parts (18, 19) of the partition (15) are positively and/or non-positively connected to one another, so that the two chambers (13, 14) are fluidly connected. Separating device according to one of the preceding claims, characterized in that the partition wall (15) has at least one first through-opening (21) which fluidly connects the first chamber (13) to the second chamber (14), wherein through the first through-opening (21) in Operation the cleaned liquid flows from the first chamber (13) into the second chamber (14). Separating device according to one of the preceding claims, characterized in that the first passage opening (21) has a lower edge (22) which during operation defines a maximum liquid level of the cleaned liquid in the first chamber (13). Separating device according to one of the preceding claims, characterized in that the dividing wall (15) has a second passage opening (23) which connects the two chambers (13, 14) to one another for aerating the receiving body (12). Separating device according to one of the preceding claims, characterized in that the receiving body (12) is elongate, the partition (15) separating the two chambers (13, 14) from one another in the longitudinal direction. Separating device according to one of the preceding claims, characterized in that the receiving space has at least two maintenance openings (24), a first maintenance opening (24') in the first chamber (13) and a second maintenance opening (24') in the second chamber (14 ) ends. Separating device according to one of the preceding claims, characterized in that at least one conveying device, in particular a lifting system, is arranged in the second chamber (14) in order to discharge the cleaned liquid from the second chamber (14) during operation. Method for producing a separating device (10) which comprises at least one inlet (11) for a contaminated liquid, in particular waste water containing fat, and a receiving body (12) which has at least a first chamber (13) for receiving the contaminated liquid and a second chamber (14) for receiving the cleaned liquid, the inlet (11) opening into the first chamber (13) and the first chamber (13) being fluidically connected to the second chamber (14) for transferring the cleaned liquid, the two chambers (13, 14) are separated from each other by at least one partition (15), characterized in that the partition wall (15) is formed integrally with the receiving body (12) by a rotational molding process. Method for producing a separating device (10), which comprises at least one inlet (11) for a contaminated liquid, in particular waste water containing fat, and a receiving body (12) which has a first body element (16) with a first chamber (13) for receiving the contaminated liquid and a second body member (17) having a second chamber (14) for receiving the cleaned liquid, the two body members (16, 17) each having a portion (18, 19) of a partition (15) separating the two Chambers (13, 14) separate, the two body members (16, 17) each being formed by a rotational molding process and the two formed body members (16, 17) being joined together to form the partition (15) and the two chambers (13, 14) are fluidly connected to each other. procedure after Claim 16 , characterized in that the respective body member (16, 17) is formed integrally with the portion (18, 19) of the bulkhead (15) by the rotational molding process. procedure after Claim 16 or 17 , characterized in that the two body elements (16, 17) are connected to one another in a positive and/or non-positive manner, in particular by screwing.

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