DE102012217840B3 - Telescopic attachment for grease separators - Google Patents

Abstract

The invention relates to a telescopic attachment for a separating container 2 intended for underground installation, a separator for separating hydrophobic substances contained in the water, a fluid comprising the hydrophobic substances flowing via an inlet into the separating container, in which the fluid settles in such a way that it settles deposit heavy constituents at the bottom of the separator container in a sludge trap and lighter constituents in an upper layer on a surface of the fluid contained in the separator container 2, so that fluid cleaned from the hydrophobic substances flows off via a drain, the separator container having an access opening at the top in the installed position an interior defined in the separating container 2 is accessible, the telescopic attachment comprising an attachment element for inserting a telescopic element into the access opening with a fixing means, the telescopic element being vertical in relation to the access opening is adjustable. The fixing means is designed such that the telescopic element is held in the attachment element with a normal load by the fixation means, but a vertical adjustment of the telescopic element 24 in relation to the attachment element is possible when the normal load is exceeded.

Description

The invention relates to a telescopic attachment for a particular intended for ground installation separation vessel of a separator. Such bottom containers are used, for example, as containers for pumps, inspection shafts, light liquid separators and all areas where a subsequent access to the bottom container must be realized. In particular, the invention relates to a telescopic attachment for an intended for ground installation separation vessel of a separator for separating hydrophobic substances contained in the water, wherein a fluid comprising the hydrophobic substances flows through an inlet into the separation vessel, in which the fluid so calmed that heavy Deposit ingredients on the bottom of the separation vessel in a sludge trap and lighter ingredients in a topcoat on a surface of the fluid contained in the separation vessel, so that fluid drained from the hydrophobic substances drains off via a drain, the separation vessel having an installation opening in the top access opening over which a the compartment defined interior is accessible, wherein the telescopic attachment comprises an attachment element for insertion of a telescopic element in the access opening with a fixing means, wherein the telescopic element vertically in relation to the Aufsat zelement is adjustable.

The separation vessel is particularly oval, rectangular or round design made of plastic or stainless steel for gravity-dependent deposition of separable oils and fats of vegetable or animal (organic) origin and other suspended matter contained therein from wastewater or wastewater. Such separators, which are also referred to as "gravitational separator" due to the physical principle of action, are suitable for both ground installation and for free installation. The separation tank is therefore often referred to as a bottom tank.

In a separator of this type wastewater via a supply line, which serves as a calming section, fed to the separation vessel. This supply line usually has a minimum length which corresponds to 10 times the cable diameter. The separation tank has at the lower end to a sludge collection chamber in which substances that are specific heavier than water, sink through the settling tank entering sedation in the water and settle. In a Fettabscheideraum above the sludge trap, often referred to as hydraulic reaction space, the separation of oils and / or fats from the water or wastewater takes place in which these substances float and form a top-growing upper layer, often simply as a "fat layer" referred to as. Normally, a drain opening with a drain is provided at the inlet opposite the end of the separation vessel, which opens into drain pipelines outside of the separation vessel. From this process, the water released from suspended matter and oils and fats flows off. To produce the prescribed according to DIN-EN 1825 slope the drain is usually 70 mm lower than the inlet. At regular intervals of preferably every two weeks, but at the latest after four weeks, the entire contents of the separation tank must be disposed of and cleaned. In this case, the entire contents of the separation vessel is first stirred and homogenized via the access opening with a stirring motor, then the contents are suctioned off via a suction pipe opening into the bottom. After cleaning the separation vessel this is again complete with water, eg. As drinking water, process water or treated water, which complies with the local discharge regulations. After cleaning, the access opening is closed by means of a lid.

When installing the separation vessel in the ground, the area above the separation vessel is filled with a filling medium, for. B. with earth, gravel or sand. The bridging of the distance between the upper access opening and a then accessible from the top closure or lid via a telescopic attachment. This telescopic attachment usually comprises an attachable to the access opening of the separation vessel attachment element and a vertically adjustable relative to this attachment element telescopic element with a longitudinally extending hollow cylinder which is guided with its - lower - relatively movable in the attachment element and over between the attachment element and the Hollow cylinder acting, designed as a clamping ring fixing means in an adjustable target position can be fixed, and provided in an installed position at the upper end receptacle for a lid, a closure or the like. Between the hollow cylinder and the attachment element, a lip seal is formed for the realization of a media-tight connection.

In the document DE 20 2010 001 570 U1 discloses a grease trap system having a generic telescope attachment. The telescopic attachment comprises a telescopic element that is vertically adjustable relative to the access opening of the separation vessel. The grease separator with the generic telescopic attachment is suitable for ground installation and serves to separate greasy wastewater.

Disadvantages of the prior art

The clamping ring can exert unwanted forces on the separating vessel in the installed state of a possibly incorrectly installed lid or a surrounding, heavy concrete slab and destroy this or at least apply undesirable stresses, which adversely affect the life. This also applies to an incorrect load or overloading by a passing car or truck. Furthermore, the installation of the telescopic attachment in the required target position is expensive. Thus, the telescopic attachment must be held by a second person or depending on the size of the separator with a crane in the desired position in relation to the attachment element and then fixed with the clamping ring.

task

Based on this prior art, the present invention seeks to at least partially avoid these disadvantages and in particular to provide a telescopic attachment that excludes damage to the separation vessel and simplifies the installation of the telescopic attachment in the desired desired position.

invention

This object is already achieved in a separator, in particular a grease trap of the type mentioned above, in that the telescopic attachment comprises an attachment element for inserting the telescopic element into the access opening with a fixing means, wherein the fixing means in the form of projections or nubs provided with a seal is formed cooperate, wherein the nubs or projections are formed on the outer circumferential surface of the hollow cylinder and wherein the seal is provided on the attachment member on the inner abutment surface and adapted to receive the hollow cylinder, wherein the seal corresponds to the projections or nubs, that the telescopic element is held in the attachment element at a normal load (dead load) by the fixing means, but when crossing the dead load vertical adjustment of the telescopic element in relation to the attachment element is possible.

Preferably, the load is adjustable as a threshold value from which the relative offset occurs. The dead load usually corresponds to the weight of the telescopic element. The threshold value can thus be adapted as desired to the respective installation situation and the fixing means can be designed differently for this purpose.

A particular advantage of the invention is that the telescopic attachment according to the invention is designed as a kit comprising telescopic element and attachment element, so that the telescopic attachment according to the invention can be placed on conventional separation containers. In addition, the telescopic attachment according to the invention enables a reliable fixation of the telescopic element to the separating vessel and prevents damage occurring in conventional telescopic attachments.

According to the invention the telescopic element is designed in the manner of a hollow cylinder, wherein formed on the outer circumferential surface of the hollow cylinder nubs or projections are provided. Preferably, a seal formed on the attachment element on the inner contact surface for receiving the hollow cylinder may be provided. The gasket is adapted to correspond with the dimples such that the protrusions and the gasket maintain the telescoping member fixed in the attachment member under normal load, while at a higher load it is possible to adjust the telescoping member relative to the attachment member , The attachment element may be provided at the access opening of the container.

The seal may preferably be formed as a lip seal. This lip seal may comprise at least three horizontally spaced apart lips, so that always at least one of the spaced-apart lips of the lip seal rests against the lateral surface of the hollow cylinder and thus ensures the required gas, odor and liquid tightness. Rounded pimples, z. B. with a circular segment-shaped geometry, offer the advantage that they cause no damage to the lip seal at a relative movement of the hollow cylinder in relation to the stationary annular attachment element.

A particular advantage of the inventive solution is that the telescopic element can be used in different positions in the attachment element and thus in an access opening, wherein in each case a sealing connection between the access opening and the telescopic element can be ensured. In particular, the telescopic element can be moved by applying a correspondingly large force in the direction of the axis of the telescopic element in the attachment element of the access opening, wherein even after the vertical displacement in each case a sealing connection can be ensured. Also, the telescopic element may be offset or transversely inserted into the attachment element to compensate for inclinations in the later surface. This is achieved because the formation and / or arrangement of the knobs is designed so that even with the skew always a Fixierungsmittelabschnitt, in particular a portion of a seal, in particular lips of a seal sealingly abut the outer side of the telescopic element, in particular on the outer surface of the hollow cylinder to effectively prevent passage of gases and liquids in the desired position. Another significant advantage of the proposed solution is that no more clamping ring is required, as it comes in conventional telescopic attachments used. The fixation of the telescopic element is ensured by the simple design of the fixing means in the form of projections or nubs, which cooperate with the seal, without a conventional, externally applied clamping ring is necessary.

The projections can z. B. as embedded in the outer surface of the hollow cylinder nubs, in particular steel knobs, or integrally formed nubs may be formed. The nubs are spaced from one another on either the entire lateral surface or a substantial part of the hollow cylinder, so that a plurality of nubbings are formed along the longitudinal axis of the hollow cylinder. It can also be provided that the knobs are arranged with a pitch in relation to the adjacent knobs on the lateral surface, so virtually along an imaginary helix extend with a pitch angle α along the outer surface of the hollow cylinder.

The interaction of these projections or rows of nubs with a seal, preferably the horizontally spaced apart lips of a seal on the inside of the attachment element thus allow a fixation of the telescopic element in the access opening, for example by a fixation is ensured in the stationary attachment element, so that an undesirable Relative displacement is effectively avoided from the target position; the forces between nubs or projections and seal or lip seal are therefore sufficient to carry the weight of the telescopic element for positioning in the desired position. Only when applying an outgoing on the own weight force on the telescopic element, the threshold value of the holding force is overcome, so that the telescopic element is adjustable relative to the access opening of the separation vessel or the stationary attachment element, at least until the next longitudinal projection row or row of nubs on the hollow cylinder rests against the seal or the lip seal. Then, for the final fixation of the area above the separation vessel and filled around the telescopic element with the filling medium (sand, gravel or a mixture) and a cover, for. B. a 120 kg heavy BEGU cover placed on the upper flange of the telescopic element.

The nubs preferably have a diameter of 6 mm.

Preferably, two rows of nubs adjacent in the vertical direction are always offset from one another by the nub radius, so that at least one, preferably two lips of the lip seal can always rest on the outer lateral surface of the telescopic element and at least one nub element on one of the inner rings of one may possibly abut in the provision of a lip seal provided lip seal is applied.

verlaufen und vertikal um den Abstand x₀ zueinander beabstandet sind, wobei die Noppen auf den Geraden an solchen Stellen angeordnet sind, an denen die Geraden K Schnittebenen einer Schnittebenenschar schneiden, wobei sich die K Schnittebenen in der durch das horizontale Zentrum des Zylinders verlaufenden Vertikalachse des Zylinders schneiden und mit einem Winkelabstand von

voneinander beabstandet sind, wobei N und K natürliche Zahlen sind und r den Radius des Zylinders darstellt.Preferably, the nubs are arranged in a region on the outer lateral surface along a family of parallel straight lines, wherein the straight line on the outer lateral surface obliquely to the vertical axis of the cylinder forming the outer lateral surface with a slope of

run and vertically spaced by the distance x ₀ to each other, wherein the knobs are arranged on the straight lines at such locations where the straight lines intersect K sectional planes of a cutting plane, wherein the K cutting planes in the extending through the horizontal center of the cylinder vertical axis of the Cut cylinder and with an angular distance of

spaced apart, where N and K are natural numbers and r represents the radius of the cylinder.

Accordingly, a uniform distribution of the knobs on the outer circumferential surface of the telescopic element is ensured. The described uniform distribution of the knobs ensures that the knobs over the entire area on the outer circumferential surface in which they are arranged, can allow a uniform fixation of the telescopic element in the attachment element. By arranging the knobs along the straight line, each having a slope to the vertical axis of the cylinder, it can be ensured that a sealing fixation between the attachment element and the telescopic element can be realized at an angled to the vertical attachment element of the telescopic element. For example, possibly arranged in an angled arrangement of the telescopic element arranged on the attachment element, annular lip seal fully abut the telescopic element, without over nubs or Projections which are provided on the telescopic element to extend.

In addition, the corresponding arrangement of the knobs allow sufficient fixation with simultaneous displaceability of the telescopic element in the attachment element. The provision of straight lines with the described slope m _G allows a circumferentially uniform arrangement of the knobs. In addition, such an arrangement of the nubs on the cylinder can be achieved that the nubs do not run on horizontal lines, but that the arrangement of the nubs alternates horizontally by a straight line. It should be noted that the specified value of the slope m _G indicates the vertical distance that passes through a straight line when passing through a certain horizontal distance, the information vertically and horizontally refer to the extension of the cylindrical telescopic element and vertically indicates the direction along the cylinder axis.

The smaller the distance x _{0 is} chosen, the higher is the notch density. If the density of the nubs is too low, it may not be possible to ensure sufficient fixation between the telescopic element and the attachment element. In the provision of an excessively high density of nubs, a possibly provided seal may no longer rest directly on the cylinder on which the nubs are arranged, but must necessarily run over nubs so that satisfactory sealing between telescopic element and attachment element can no longer be achieved. Accordingly, the notch density increases with larger K, and, as with the provision of a corresponding x ₀ , neither in the provision of the K nor a too high pitch density nor too low pitch density is desirable. Furthermore, the slope of the straight line m _{G increases} with increasing N, and if the pitch is too strong, it may not be possible to fix the telescopic element in relation to a vertical displacement to the attachment element, and it may no longer be possible to achieve the advantages described above if too small N is provided may result from the provision of a slope of the straight line on which the nubs are arranged. It has been found that it can be particularly advantageous to provide the distance x ₀ between 40 and 80 mm, in particular to fix it to 60 mm, to provide K between 10 and 25 mm, in particular to fix 18 mm, and N between 10 and 30 mm, in particular set to 21 mm.

Preferably, a seal with a certain number of lips, in particular three, is provided between the attachment element and the telescopic element, which are arranged in parallel and with a respective identical vertical distance one above the other so that in each position of the seal on the telescopic element at least one of the full lips rests directly against the cylinder, without a nub between the cylinder surface and this lip seal is arranged. The fact that in each position of the telescopic element in the attachment element always at least one of the lips fully rests directly on the cylinder, a reliable seal on the fixation of the telescopic element in the access opening on the interaction of the knobs is ensured with the seal. In addition, it may be particularly advantageous that at least one of the lips is at least partially in contact with knobs, in particular via knobs and not completely directly on the cylinder, so that between nubs and seal such a contact pressure prevails that a secure fixation of the telescopic element in the attachment element is guaranteed.

übereinander angeordnet sind und schräg zur Vertikalachse des die Außenmantelfläche bildenden Zylinders mit einer Steigung von

verlaufen, wobei L eine natürliche Zahl ist, P eine natürliche Zahl oder 0 ist, wobei N insbesondere ein ganzzahliges Vielfaches von P ist, und wobei σ ein Korrekturfaktor ist. Die Angabe der Steigung m_L bezieht sich dabei auf den vertikalen Abstand, den eine Gerade mit der Steigung m_L entlang der Zylinderachse bei Durchlaufen eines Horizontalabstands senkrecht zur Zylinderachse auf der Mantelfläche durchläuft. Mit der genannten Anordnung der Lippen kann besonders gut gewährleistet sein, dass in jeder Stellung des Teleskopelements in dem Aufsatzelement, und damit in jeder relativen Position des Teleskopelements zu der Dichtung, solange die Dichtung in dem Bereich des Teleskopelements angeordnet ist, über den sich die Noppen erstrecken, die gewünschte Fixierung des Teleskopelements in dem Aufsatzelement gewährleistet ist und gleichzeitig das Teleskopelement abdichtend in dem Aufsatzelement angeordnet ist. Denn dadurch kann ermöglicht sein, dass in jeder Position des Teleskopelements in dem Aufsatzelement immer zumindest eine Lippe vollumfänglich direkt an dem Zylinder des Teleskopelements verläuft und immer zumindest eine Lippe über zumindest eine Noppe und nicht vollumfänglich direkt an dem Zylinder des Teleskopelements verläuft, so dass gleichzeitig eine abdichtende und stabile Fixierung gewährleistet ist.In particular, it may be advantageous that the lips of the seal at a vertical distance from

are arranged one above the other and obliquely to the vertical axis of the outer circumferential surface forming cylinder with a slope of

where L is a natural number, P is a natural number or 0, where N is in particular an integer multiple of P, and where σ is a correction factor. The indication of the slope m _L refers to the vertical distance that passes through a straight line with the slope m _L along the cylinder axis when passing through a horizontal distance perpendicular to the cylinder axis on the lateral surface. With the above arrangement of the lips can be particularly well ensured that in each position of the telescopic element in the attachment element, and thus in any relative position of the telescopic element to the seal, as long as the seal is disposed in the region of the telescopic element, on which the nubs extend, the desired fixation of the telescopic element is ensured in the attachment element and at the same time the telescopic element is arranged sealingly in the attachment element. Because this can be made possible that in each position of the telescopic element in the attachment element always at least one lip fully extends directly to the cylinder of the telescopic element and always at least one lip on at least one knob and not fully on directly the cylinder of the telescopic element extends, so that at the same time a sealing and stable fixation is ensured.

P, L and σ can be freely selected depending on the intended number of lips and depending on the arrangement of the knobs on the cylinder of the corresponding telescopic element. It has been found that it is particularly advantageous to provide σ between 1.1 and 1.4 mm, in particular set to 1.33, and / or to provide L between 1 and 3 mm, in particular set to 2 mm, and / or P between 1 and 7 mm, in particular set to 3. With a corresponding definition of σ and / or L and / or P, it may be possible, regardless of the number of lips and regardless of the arrangement of the nubs on the cylinder of the corresponding telescopic element to the desired stable and sealing fixation of the telescopic element in the attachment element to reach.

An alternative solution further provides a clamping ring, but which is adjustable so that it fixes the telescopic element at a load below the rated load via internal spring elements, but allows the adjustment of the telescopic element in relation to the attachment element when crossing the rated load. The required frictional connection can be realized for example by inner tabs. Those skilled in the art will appreciate that the invention is not limited to grease traps and their containers, but a novel solution for the realization of a telescopic attachment for a container for ground installation, ie containers for pumps, inspection shafts, light liquid and all such areas where a Access to the bottom container must be realized.

An inventive arrangement of the knobs on the telescopic element and the course of lip seals on the telescopic element can also be described as follows: Cylindrical telescope attachment with outer radius r ₁ and externally mounted knobs. The nubs are mounted on the cylinder surface on a family S _α of A _α parallel lines (A _α ε IN), each extending along the longitudinal axis of the cylinder. S _α results from the intersection of the cylinder with a plane family E _α of 180 / αplanes, each of which contains the straight line running through the center of the tube and which are each at an angle α> 0 to each other (α must divide 360), the cross section of the tube in A _α = 360 / α segments divided. Each two parallel lines thus have the same distance d _α <0 to each other.

On all lines of the array S _α, two adjacent studs center points of a straight line have the distance d _M> 0 and the outer distance d _N = d _M - 2r _N, if _N r describes the nubs radius.

jeweils parallel zueinander sind und den gleichen Abstand zueinander haben, welcher eindeutig durch die Geraden der Schar S_α und den Noppenabstand d_M bestimmt ist. V bezeichnet dabei den Versatz der Noppen auf zwei parallelen Geraden aus S_α. Um ein durchgängig einheitliches Muster von Noppen zu erhalten, muss k ∊ IN existieren mit A_α·V = k·d_M. Die Menge der V ∊ IN, für die diese Gleichung erfüllt ist, ergibt sich aus A_α·Vmodd_M = 0 ⇔ V ∊ {y ∊ IN|d_MteiltA_α·y} def / = V^α Offensichtlich giltThe nubs are on S _α exactly at the intersections with another straight line T _α , whose straight lines extend around the pipe with slope

are each parallel to each other and have the same distance from each other, which is uniquely determined by the straight line of the crowd S _α and the nub spacing d _M. V designates the offset of the nubs on two parallel straight lines from S _α . In order to obtain a consistently uniform pattern of pebbles, k ∈ IN must exist with A _α * V = k · d _M. The set of V ∈ IN, for which this equation is satisfied, results from A _α · V modd _M = 0 ⇔ V ε {y ∈ IN | d _M shares A _α · y} def / = V ^α Obviously

Trivially, A _α divides A _α · y ∀y ε V ^α , and d _M divides A _α · y ∀y ε V ^α according to the definition of V ^α . Therefore, for all y ε V ^α and because of the uniqueness of the prime factorization A _α · y must contain the prime factors of A _α and those of d _M , whereby only multiples of y ₀ are possible for elements from V ^α , ie V ^α has the shape V ^α = {y ₀ · i | i ∈ IN} (+)

Between the telescopic element and a clamping ring, a seal with a number of lip seals is provided, which are arranged parallel to each other and each identical distance d _L. In every position of a telescopic attachment inserted vertically into the clamping ring, at least one of the lip seals should lie fully peripherally directly against the cylinder (++). For the potential range of movement B of the lip seals, V ε V ^α applies when the offset is selected

Assuming that at least three lip seals with a width of b _L lie around the cylinder, then with knob radius r _N for B 2r _N + 2b _L <B + r _N ⇔ r _N + 2b _L <B, so that (++) is fulfilled, especially of course B> 0

gilt.If now the telescopic attachment is tilted by the angle γ> 0, the lip seals of a sinusoidal curve run correspondingly around the telescope attachment. Assuming that the minimum and maximum of the sine curve lie in the range of motion B of the lip seal, this results for the length 2r ₁ · tanγ the sealing lip movement caused by the tilting of the telescopic tower, the inequality 2r ₁ · tanγ ≤ B. ie must γ for given tube radius r ₁ and the maximum tilt angle offset V, embossment size r _N, angle α and nubs distance d _M are selected such that

applies.

To create complex structures of the separation vessel is preferably rotationally sintered, but can also be manufactured in other ways, such as. As blow molding, injection molding, low pressure casting and vacuum casting and plate construction preferably wherein thermoplastic materials are used, in particular PE and PU.

In particular, the invention also relates to a separating container system comprising a telescopic attachment according to the invention and a separating container.

Further details, advantages and features of the invention can be taken from the following part of the description, in which embodiments of the device according to the invention will be explained in more detail with reference to four drawings. Show it:

1 a side view of a grease trap with a telescopic attachment;

2 a preferred embodiment of a telescopic element in a vertical orientation;

3 the telescopic element according to 2 in a slightly inclined orientation; and

4 a plan view of a development of the telescopic element according to 2 ,

Identical or equivalent parts are provided with the same reference numerals.

Accordingly, the in 1 shown separator with a rated power of 10 L / sec essentially from a trough or trough-like separation vessel 2 , in the over an inlet pipe 4 Fats and / or oils containing water flows in after calming down. Approximately the lower third of the separation tank 2 forms the mud trap. For emptying the sludge located in the sludge bottom walls 6 . 8th of the separation tank 2 from the two front ends to the center inclined to one at the junction of the two bottom walls 6 . 8th approximately in the middle of the separation tank 2 arranged and not shown disposal nozzle 10 for the bottom connection of a disposal line for removing the sludge.

The area above the sludge trap forms the hydraulic active space when filled with water. Depending on the filling with water, the volume of this hydraulic active space and thus also the separation efficiency of the separator changes. The in the separation tank 2 protruding and horizontally extending inlet nozzle 4 opens into a transverse to extending vertical pipe to form a Einlauftauchrohrs. Between the two longitudinal walls of the separator tank 2 four connecting pipes extend 12 . 14 , which are integrally formed on the longitudinal walls. These connecting pipes 12 . 14 ensure the dimensional accuracy of the longitudinal walls during filling and thus prevent leakage of the separation vessel 2 with filled water or alternatively compression by a separating vessel 2 surrounding soil during earth installation.

A drain neck 16 a drain dip tube arranged in the interior of the separation vessel is for generating a gradient with respect to the inlet connection 4 offset by approx. 70 mm downwards.

At the top of the separator tank 2 are two hollow cylindrical access ports 18 integrally formed, on the upper end of a clamping ring 20 with an inside gasket 32 the attachment element 34 receives. In the attachment element 34 is the seal 32 with three vertically spaced elastic lips 22 inserted. This seal 32 takes a cylindrical telescopic element 24 vertically displaceable but variably positionable in different nominal positions.

2 shows an enlarged side view of the telescopic element 24 which essentially consists of a hollow plastic cylinder 26 with a wall thickness of 5 mm, at its upper end an outwardly projecting support flange 28 one piece is formed. The outer cylindrical surface of the telescopic element 24 is with rows of spaced pimples 30 Mistake.

verlaufen. Die Geraden sind vertikal um den Abstand x₀ zueinander beabstandet. Vorliegend beträgt der Abstand x₀ 60 mm, die natürliche Zahl N ist auf 21 mm festgelegt und der Radius der Außenmantelfläche beträgt 305 mm. Die Noppen 30 sind auf den Geraden an solchen Stellen angeordnet, an denen die Geraden K Schnittebenen schneiden. Die K Schnittebenen schneiden jeweils die Vertikalachse des Zylinders und sind mit einem Winkelabstand von

voneinander beabstandet.In 4 exemplified an embodiment of an inventive arrangement of nubs on the telescopic element, in this case corresponds to the arrangement of the nubs on the outer surface of the cylindrical telescopic element 24 , In 4 is a projected onto the plane development of the outer surface of the telescopic element 24 shown in the angle range between 0 degrees and 120 degrees. In the embodiment shown, the cylindrical telescopic element 24 an inner radius of 300 mm and an outer radius of 305 mm, so that the material thickness of the circular cylindrical telescopic element 24 thus 5 mm. The knobs are on the outer surface of the telescopic element 24 arranged along a family of parallel lines, wherein the straight line on the outer circumferential surface obliquely to the vertical axis of the outer circumferential surface forming cylinder with a pitch of

run. The straight lines are vertically spaced by the distance x ₀ to each other. In the present case, the distance x _{0 is} 60 mm, the natural number N is set at 21 mm and the radius of the outer lateral surface is 305 mm. The pimples 30 are arranged on the straight lines at locations where the straight lines intersect K cut planes. The K cutting planes each intersect the vertical axis of the cylinder and are at an angular distance of

spaced apart.

In the in 4 illustrated embodiment is K on 18 and thus Δφ fixed at 10 degrees. Out 4 It can be seen that the corresponding arrangement of the knobs to a uniform over the entire cylinder region in which they are arranged distribution of the knobs 30 on the outer circumferential surface of the telescopic element 24 leads. The inventive arrangement of the knobs 30 leads to helical rows of nubs on the lateral surface of the telescopic element 24 and to substantially vertically extending rows of nubs, which are each spaced apart at an angular distance of Δφ = 10 °. The pimples 30 However, they are not arranged along horizontal straight lines, but the horizontal arrangement of the knobs 30 is such that the knobs alternate about horizontal straight lines, each vertically spaced from each other. This allows a particularly good fixation of the telescopic element 24 in an attachment 34 , in particular via one in the attachment element 34 arranged seal 32 respectively. In particular, by the horizontally alternating course of the knobs 30 be assured that the telescopic element 24 in a vertical load against the attachment element 34 not jerkily changed his position.

The embodiment of the telescopic element 24 with the in 2 and 3 illustrated arrangement of the knobs 30 on the outer lateral surface, in 4 is explained in more detail, guaranteed even at a to the attachment element 34 Angled use of the telescopic element 24 in the attachment element 34 a stable and sealing fixation of the telescopic element 24 in the attachment element 34 , When using the telescopic element 24 according to 1 corresponds to the angled arrangement of the telescopic element 24 for attachment element an angular offset of the cylinder axis of the telescopic element 24 to the through the middle of the clamping ring 20 extending vertical axis.

In the 2 and 3 is also the course of the lips 22 a seal 32 shown in the installation of the telescopic element 24 in the attachment element 34 to 1 results, with the seal 32 with the lips 22 in the access opening of the attachment element 34 is arranged. In 2 are the lips 22 substantially horizontal to the axis of the cylindrical telescopic element 24 arranged. Out 2 It can be seen that in the inventive arrangement of the knobs 30 on the outer circumferential surface of the telescopic element 24 and providing a corresponding distance between the lips 22 Such an arrangement of the telescopic element 24 to the seal 32 It is guaranteed that at least one of the lips 22 fully directly on the outer circumferential surface of the telescopic element 24 runs and in each case at least one lip 22 via at least one nub and not completely directly on the outer lateral surface of the cylindrical telescopic element 24 runs.

verläuft. Während in 2 P auf 0 festgelegt ist, ist in 3 P auf 3 festgelegt. In 2 und in 3 sind die Lippendichtungen 22 jeweils um den Abstand

vertikal voneinander beabstandet, wobei σ auf 1,3 und L auf 2 festgelegt ist, und wobei das x₀ dem vertikalen Abstand x₀ entspricht, der sich aus der Anordnung der Noppen 30 auf der Zylindermantelfläche des zylinderförmigen Teleskopelements 24 wie oben beschrieben ergibt.In 3 , in which the telescopic element according to 2 is shown in a slightly inclined orientation, run the lips 22 obliquely to the horizontal and also obliquely to the vertical axis of the outer circumferential surface forming cylinder or the cylindrical telescopic element 24 , As well in 2 as well as in 3 can the course of the lips 22 be described as the course of a straight line to the axis of the cylindrical telescopic element 24 with the slope

runs. While in 2 P is set to 0 is in 3 P set to 3. In 2 and in 3 are the lip seals 22 each by the distance

vertically spaced apart, wherein σ is set to 1.3, and L 2, and wherein the x ₀ corresponds to the vertical distance x _0, which results from the arrangement of the studs 30 on the cylindrical surface of the cylindrical telescopic element 24 as described above.

From the 2 and 3 It can be seen that in each of the figures, so both in a horizontal arrangement of the lips 22 to the telescope element 24 as well as in the corresponding oblique placement of the lips 22 to the telescope element 24 by the inventive design of telescopic element 24 and lips 22 a sealing fixation of the telescopic element 24 in the attachment element 34 is ensured, but at least one lip 22 fully directly on the lateral surface of the cylindrical telescopic element 24 is applied.

From the embodiment shown, it can be seen that preferably lips 22 and arrangement of the pimples 30 coordinated with each other, so that a stable and sealing fixation of the telescopic element 24 in the attachment element of the separation vessel 2 is feasible.

In the present embodiment, the diameter of the nubs 30 about 6 mm and the knobs have a height of about 10 mm from the outer circumferential surface of the telescopic element 24 ,

Depending on different diameters and degrees of inclination of the telescopic element 24 can have different heights of the lips 22 and a different number of lips 22 be provided to the installation situation and the characteristics of the telescopic element 24 and the attachment element 34 coordinated fixations of the telescopic element 24 in the attachment element 34 or the access opening of the separation tank 2 to enable. In particular, the nub structures on the outer circumferential surface of the cylindrical telescopic element 24 differ by the number, diameter and height of the knobs.

LIST OF REFERENCE NUMBERS

2

separating vessel

4

flowguide

6

bottom wall

8th

bottom wall

10

disposal socket

12

connecting pipe

14

connecting pipe

16

drain connection

18

access port

20

clamping ring

22

lip seal

24

telescopic element

26

Hollow plastic cylinder

28

support flange

30

burl

32

poetry

34

top element

Claims (12)

Telescopic attachment for a ground-mounted separation tank ( 2 ) a separator for separating hydrophobic substances contained in the water, wherein a fluid comprising the hydrophobic substances flows through an inlet into the separation vessel, in which the fluid calms so that heavy ingredients at the bottom of the separation vessel in a sludge trap and lighter ingredients in a top layer on a surface of the in the separation vessel ( 2 Settle so that fluid purified from the hydrophobic substances drains through a drain, wherein the separating container has a top-mounted in the installation position access opening, via which a in the separating vessel ( 2 ) defined interior is accessible, wherein the telescope attachment a telescopic element ( 24 ) which is designed in the manner of a hollow cylinder and can be inserted into the access opening, wherein the telescopic element is vertically adjustable in relation to the access opening ( 24 ), characterized in that the telescopic attachment an attachment element for insertion of the telescopic element ( 24 ) in the access opening with a fixing means, wherein the fixing means in the form of projections or nubs, which cooperate with a seal, wherein the nubs or projections are formed on the outer circumferential surface of the hollow cylinder and wherein the seal on the attachment member to the inner contact surface is provided and is adapted to receive the hollow cylinder, wherein the seal corresponds to the projections or nubs that the telescopic element is held in the attachment element at a normal load by the fixing means, but when crossing the normal load, a vertical adjustment of the telescopic element ( 24 ) in relation to the attachment element is possible. Telescopic attachment according to claim 1, characterized in that the amount by which the rated load is exceeded before a relative offset is adjustable. Telescopic attachment according to claim 1 or 2, characterized in that the telescopic element ( 24 ) comprises a cylindrical lateral surface with an outer circumferential surface, and in that on the outer lateral surface at defined distances from each other nubs ( 30 ) are provided. Telescopic attachment according to claim 3, characterized in that the nubs ( 30 ) are spaced apart in rows. Telescopic attachment according to claim 4, characterized in that the rows of nubs are offset from one another. Telescopic attachment according to claim 5, characterized in that the different heights of the rows of nubs ( 30 ) in relation to the degree of inclination of the telescopic element in the installed state and the lips of the seal stand. Telescopic attachment according to one of claims 3 to 6, characterized in that the nubs ( 30 ) are arranged in a region on the outer lateral surface along a family of parallel straight lines, wherein the straight lines on the outer lateral surface oblique to the vertical axis of the outer circumferential surface forming cylinder with a pitch of

run and vertically spaced by the distance x ₀ to each other, wherein the nubs ( 30 ) are arranged on the straight lines at those locations where the straight lines K intersect cutting planes of a cutting plane, the K cutting planes intersecting in the vertical axis of the cylinder passing through the horizontal center of the cylinder and at an angular distance of

spaced apart, where N and K are natural numbers and r represents the radius of the cylinder. Telescope attachment according to claim 7, characterized in that x _{0 is} between 40 and 80 mm, in particular 60 mm, that K is between 10 and 25, in particular 18, and that N is between 10 and 30, in particular 21. Telescopic attachment according to claim 7 or 8, characterized in that between the attachment element and the telescopic element, a seal with a certain number of lips, in particular 3, are provided, which are arranged in parallel and with a respective identical vertical distance one above the other so that in each position the seal on the telescopic element at least one of the lips fully rests directly on the cylinder without a nub between the cylinder surface and these lips is arranged. Telescopic attachment according to claim 9, characterized in that the lips a vertical distance of

are arranged one above the other and obliquely to the vertical axis of the outer circumferential surface forming cylinder with a slope of

where L is a natural number, P is a natural number or 0, where N is in particular an integer multiple of P, and where σ is a correction factor. Telescope attachment according to claim 10, characterized in that σ is between 1.1 and 1.4, in particular 1.33, and / or that L is between 1 and 3, in particular 2, and / or that 2 between 0 and 7 is, in particular 3 is. Separator container system comprising a telescopic attachment according to one of the preceding claims and a separation vessel.

Images