DE8132950U1 - DEVICE FOR SEPARATING LIQUIDS AND SOLIDS, ESPECIALLY IN CHANNEL CLEANING AND SLUDGE EXTRACTION - Google Patents

Description

81 222/223

Dr.-Ing. WALTER STARK FATE NANWYER Moerser Strasse 140 D-4150 Krefeld 1 'S "(02151) 28222 and 20469 El 8 53578

Städtereinigung Schönmackers GmbH & Co. KG, Am Seider 7-9 4152 Kempen 1

Device for separating liquids and solids, especially for sewer cleaning and sludge extraction

The invention relates to a device for separating liquids and solids, in particular when cleaning sewers and sludge suction, with a closed elongated container, in which a circumferential side against the container wall sealed piston is reciprocally arranged, the one end wall with an adjustable Has flap and thereby separates the container into a dirty water compartment and a clean water compartment, the piston On the dirty water side, several sieves of graded fineness are arranged at a distance from each other and carries the finest sieve the end wall is arranged.

In such a device, the liquid to be treated is Solid mixture pumped into the wastewater compartment, from which the liquid after passing through the sieves essentially under the influence of gravity, possibly also with Support of different pressure conditions in the pure water compartment is running. The pure water compartment becomes the Liquid then pumped out for further use.

In a known device of the type described at the outset

Bar * AR Krpfeltl 103,525 BLZ 32070080 *, -. 'St ^ a ^ i? Kt ^ eId 335722 ^ BbZ jioSOOOO · Postal check Essen 4055-431 BLZ 36010043 PATENT ADVOCATE OR. STARK MOERSER STR. 140 ■ Ι ^ Ιδί KrEFECÄ * · "g» (021St) 26222 and 20469 · [Tx] 853578

Type (■ the container is closed on one side with a lid. If If the lid is opened and the piston is moved towards the opening, the in front of and between the sieves can be opened Any accumulated solids can be easily discharged. Since the sieves are then also accessible, they can be serviced, be replaced if necessary. Will the piston at with the lid still closed moved in the direction of the lid, then the volume of the dirty water compartment is reduced, while at the same time the volume of the pure water compartment increases. At the same time, a forced filtration occurs of the mixture still in the wastewater compartment, which results in the in this area existing sludge is compacted.

The known device has proven itself in itself. However, there is still room for improvement.

The object of the invention is, in particular, the deposition in a device of the type described at the beginning fine solids and, moreover, the cleaning or backwashing of the sieves.

This object is achieved in that the finest sieve consists of a plurality of filter sieve tubes arranged in a parallel axis consists. By using filter sieve tubes, the sieve area of the fine sieve can be increased several times, without the device as a whole needing to be enlarged. This is particularly advantageous when using the Device sludges are to be processed, which have a relatively high proportion of very fine solids, because the fine sieve can remain in use for a longer period of time without it, due to its considerably larger sieve area has to be cleaned or backwashed in the meantime.

The filter screen tubes with their open ends are expedient

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PATENT ADVERTISER DR. STARK - MOERSER STa 140 · 04150 "RfIEFEUD'- ^ ^ 215t / 282KG u. 20469 - QLj 853578

connected to a perforated disc of the piston in such a way that it extends essentially in the longitudinal direction of the container extend.

In a simple embodiment, the perforated disk can be arranged fixedly in the piston. However, one is preferred Embodiment in which the perforated disk is driven rotatably mounted in the piston and against the piston on the circumference is sealed. On the one hand, this has the advantage that when the dirty water compartment is only partially filled, all on the Perforated disc held filter screen tubes evenly acted upon will. A clogging of only part of the filter screen tubes is thereby largely ruled out. - For the There are various options for mounting the perforated disk; so the perforated disc can be arranged in a rotationally fixed manner in the piston Axis or be mounted on a rotatably mounted shaft. The shaft or axis can in turn be stored at least on the end wall.

So that the filter screen tubes arranged on the perforated disc are not only supported on one side, it is advantageous if the filter screen tubes are arranged on at least one pitch circle and with their closed * ends on a spoked wheel or another perforated disk are supported, which is also mounted on the shaft or axle.

In any case, this arrangement also offers the possibility of closing the filter screen tubes in a simple manner clean or backwash, namely when the open ends of the filter screen tubes are directed towards the end wall and on the side of the perforated disc facing the end wall, a fixed outlet of a backwash line at a peripheral point of the assigned partial circle is present. The outlet is conveniently located in the upper container part, so that the Filter sieve tubes are always cleaned when they emerge from the mixture in the dirty water compartment and are in the upper one

PATENTANWALT DR. STARK · MOERSER STR 140 · (WlSfKREFEtD * - ^ g »(021 SI) 28222 and 20469 - Qx | 853578

Part of the container.

The seal between the outlet and the perforated disc is not a problem if a sliding seal is arranged between the two will. In addition, the outlet can be pressed resiliently against the perforated disk, including in particular the outlet at the end of a can be arranged on the end wall supported corrugated pipe.

Since the end wall is part of the piston and is arranged movably with it in the container, the return line should through the end walls at least as far as the pure water compartment out and there be at least partially designed as a flexible line so that they the length of the im Can adjust pure water compartment led line of the respective piston position. The further routing of the return line to a assigned pump is arbitrary and can be adapted to the given circumstances.

The arrangement with a rotating perforated disc for the

"Filter tube screens enable a further advantageous method

improvement of the device in terms of backwashing on the upstream sieve. When piercing the mixture Because of the upstream sieves, solids sit behind the sieves and between the sieves lower part of the container, which are very difficult to backwash. The associated problems can be solved reduce or completely eliminate if, according to the invention, on the circumferential side of the perforated disk carrying the filter screen tubes one sealed against the piston and extending into the -Q space between the coarse sieve and the fine sieve as well as there open cylinder is connected, the inside and each behind the levels of coarse sieve and fine sieve in Carries circumferentially arranged one behind the other conveyor blades, above the coarse screen and the fine screen, respectively Chutes are arranged by the conveyor blades

PATBITANWALT DR STARK - MOERSER STR. 140 -'toläf KREFEÜ) "8» (02iSi) ± 6222 and 20469 - E 853578

each recorded behind the coarse sieve or the fine sieve and Convey the sludge thrown onto the assigned chute in front of the coarse sieve or the fine sieve. With that one achieves that too During the filtering process, solids that are deposited in the direction of flow behind the sieves and between the sieves have to be continuously transported back to before the first sieve (coarse sieve).

If the coarse sieve and the fine sieve are arranged in a rotationally fixed manner, then their upper sections can each be designed as the chutes ■ be jO. The upper edges of the chutes are expediently used as sealing lips formed, which are arranged next to the conveyor blades Seal the sealing rings. If the coarse screen is stationary, the other end of the shaft or axle can also be mounted on it be.

To clean or backwash the upstream fine sieve To improve sieves (coarse sieve, fine sieve), an embodiment is recommended in which the shaft or axle is hollow and connected to a pump or the like, with nozzles on the shaft in front of the fine sieve and / or the coarse sieve or axis are connected, which are directed to the associated sieve. The jets of water emerging from the nozzles clean the allocated sieves in the sense of a backwash, either continuously or in a centralized manner - at least but during the filtering process.

In the following, exemplary embodiments of the invention shown in the drawing are explained; show it:

Fig. 1 In a schematic representation and partially a

Longitudinal section through a device for separating liquids and solids when cleaning sewers and sludge extraction,

Fig. 2 shows another embodiment of the object according to

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PATENT ADVOCATE DR. STARK - MOERSER STR. 140 - D- * S50 KftEFELQ ·, -, <gi # 215J), * 82.2 £ and 20469 - E 853578

Fig. 1,

3 shows a modified embodiment of the object according to Fig. 2.

The device shown in the drawing initially has an elongated cylindrical container Tauf, which is only partially shown. In the container 1 there is a piston 2 which is longitudinally displaceable therein and which is circumferentially sealed against the container wall with ring seals 3, 4. The piston 2 carries on its right side in Fig. 1 an end wall 5 with a manhole 6 in the upper part and a closable flap 7 in the lower part. The flap 7, which is shown in the closed position, can be brought into open or closed position with a pneumatic or hydraulic lifting cylinder S, which is supported on the end wall 5.

The piston 2 or with. its end wall 5 divides the container into a dirty water compartment 9 on the left side of the figure and a pure water compartment 10 on the right side of the figure.

On the waste water side, a coarse sieve 11, a fine sieve 12 and a fine dust sieve 13 are also connected to the piston, which are located in the extend substantially over the remaining cross section. The coarse sieve 11 and the fine sieve 12 may be made of perforated plates exist, on the circumference of which a lip seal 14 or 15 is arranged, which cooperates with the inner wall of the container.

The fine sieve 13 consists of a plurality of filter sieve tubes 16 arranged parallel axially in the longitudinal direction of the container 1, which are attached with their open ends to a perforated plate 17 of the piston.

The device also includes other facilities, in particular

PATENT ADVOCATE DR. STARK · MOERSER STR. 14fl; ·, B ^ 150 Kf ^ f = ELIp ₁ ; "g * $ 215i), 28222 and 20469 · Qx) 853578

especially for use in sewer cleaning or sludge extraction. These facilities are not shown here in detail,

When using the device shown, dirty water is pumped into the dirty water compartment 9. From there it overflows the coarse sieve 11, the fine sieve 12 and the fine sieve 13 and through the flap 7 into the pure water compartment 10, thereby solids are removed from the wastewater and retained by the various sieves. The transport of the water takes place essentially under the action of gravity in the direction of arrow 18. The transport can through different pressure conditions on the one hand in the dirty water compartment 9 and on the other hand in the clean water compartment 10 supported will. Corresponding devices for the generation and supply of compressed air are not shown here.

Backwashing if the filters are exhausted or clogged To enable in the direction of arrow 19, a backwash device can be provided.

When sufficient quantities of solids have accumulated in the area of the sieves, compressed air is applied to the pure water compartment IO, which presses the piston 2 in the direction of the end of the container 1 on the left in FIG. 1. The accumulated solids are compacted and against the loading. _: pressed end of container 1. At this end there is a lid, not shown, which can be opened so that the accumulated solids can be discharged. At the same time, there is the possibility of cleaning the sieves.

In the embodiment shown in Fig. 2 denote;

PATENT ADVOCATE DR. STARK · MOERSER STR. 140 '·' b-4 \ 66 KREPELD '- * Ίξ> (CT2151) "28222 and 20469 · QS) 853578

like reference numerals like parts. Different from the one described above. The embodiment is the perforated disc 17 of the piston 2 is not fixedly arranged in the piston but rotatable on a stationary one in the middle of the container arranged axis 20, which is supported on the end wall 5. The perforated disk 17 has a drive, not shown on, which makes it rotate in the direction of arrow 21. A extends along the circumference of the perforated disk 17 Lip seal 22, which seals with the inside of the piston 2. On the perforated disk 17 are on a pitch circle in the vicinity of their circumference, the filter screen tubes 16 fixed, in such a way that the filter screen tubes 16 with their open ends are attached to the perforated disc and extend in the direction of the dirty water compartment 9. The closed ends the filter screen tubes are supported on the spokes of a spoked wheel, which is also on the stationary axle is rotatably mounted and which rotates with the perforated disc.

On the end wall 5 facing side of the perforated disk 17 2 ^ is in the upper region of the container 1 an outlet 24 on the Orifice plate 17 on. Between the perforated disc 17 and the outlet 24 there is a Sliding seal 25 arranged. The outlet 24 belongs to a corrugated pipe 26 which is supported on the end wall 5 and through this is passed through. The spring forces of the corrugated pipe 26 press the outlet 24 against the perforated disk 17. The corrugated pipe 26 goes into a further line 27 in the pure water compartment. The line 27 is arranged in a stationary manner. To them adjoins a movable line 28 which is connected to an outlet connection 29 of a pump 30. The movable one Line 28 is intended to provide a connection between pump 30 and outlet 24 at different positions of piston 2 in the container enable.

With this arrangement it is possible to clean the fine sieve 13 during the filtering process. For this purpose, the pump delivers 3O

PATENT ADVERTISER DR. STARK ■ MOERSER STR. Ί'40 · 'b * -4150 VMEFELD · & (021 * 31) 28222 and 20469 · IH 853573

for example from a subsequent to the pure water compartment 10 Reservoir 31 water to outlet 24, from which it flows into the filter screen tube located just in front of outlet 24 16 entry. Since the perforated disk 17 with the connected filter screen tubes 16 rotates constantly, all filter screen tubes 16 are backwashed one after the other.

As shown in Fig. 2, the outlet is located above the level 32 in the dirty water compartment 9, so that the filter screen tubes 16 are always backwashed, if they are above level 32.

In the exemplary embodiment shown in FIG. 3, the same reference symbols again designate the same parts. In contrast to the exemplary embodiment according to FIG. 2, in the present case the perforated disk 17 is fixed to a rotatable shaft 33 connected, on the one hand in the end wall 5 and on the other hand in the fixed coarse screen 11 is stored. The shaft has the drive, not shown, and rotates in the direction of the Arrow 21. The closed ends of the filter screen tubes are attached to a perforated disk 34, which in turn on the shaft 33. On the outer circumference of the perforated disk 17 extends a cylinder 35, the is sealed with the lip seal 22 against the inside of the piston 2. The cylinder 35 is on the in FIG. 3 on the right with the filter screen tubes 16 bearing perforated disk 17 closed and open on the other side. The cylinder 35 extends over the second perforated disk 34 out until just before the stationary coarse screen 11. It carries at its open end on the inside two arranged side by side and in the circumferential direction extending rows of conveyor blades 36, 37, each are limited on the pure water side of the conveyor blades 36, 37 protruding sealing rings 38 and 39, respectively.

PATENT ADVOCATE OR. STRONG ■ MOERSER STR. J * 0 , D-4150. ICBEfSLD "g *

28222 and 20469

853578

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The upper sections on the one hand of the coarse sieve 11 and on the other hand of the fine sieve 12 are each closed Slides 40 and 41 formed, which rise from the level of the sieve obliquely upwards and in the direction of the clean water compartment 10 extend. The respective upper edges of the chutes 40, 41 are designed as sealing lips 42 and 43, respectively which seal with the circumferential sealing rings 38, 39.

It can be seen from the illustration in Fig. 3 that the conveyor blades 36, 37 solids that are behind the Coarse sieve 11 or behind the fine sieve 12 in the lower part want to deposit the container 1, pick up and transport to the upper part of the container 1, where. she the solids picked up on the chutes 40 or discarded, the solids then fall over the chutes in the direction of arrows 44 and 45 in front of the coarse sieve 11 or in front of the fine sieve 12. This solids transport functions during the operation of the device, at least as long as the cylinder 35 with the connected thereto Components rotates. Damage to the filter screen tubes 16 by the collecting Solid particles are excluded because there is no longer any relative movement between the two.

In order to facilitate access to the sieve spaces, the coarse sieve 11 has a lower, pivotable segment 46 on.

So that the fine sieve 12 and possibly also the coarse sieve 11 are also backwashed during operation of the device can be, the shaft 33 is designed as a hollow shaft and in the area of the pure water compartment 1.Q. _ ξ_ '. a line 47 is connected, which in turn can be connected to the pump 30 if necessary. Behind the fine sieve

PATENT ADVOCATE OR. STARK MOERSER STR. ivtO, · ', D-415QKREF £ LD '3S ¹ (QiI ₁ SI) 28222 and 20469 - [g | 853578

- 11 -

Nozzles 47 are arranged on the shaft 33, which are directed at the fine screen 12. A similar arrangement can also be provided behind the coarse screen 11, but this is not shown. From the pump 30 Water conveyed through the line 47 and the hollow shaft 33 emerges from the nozzles 47 and cleans or The assigned fine sieve 12 backwashes.

Dr.-Ing. WALTE R STRONG PATENT ADVOCATE Moerser Strasse 140 D-4150 Krefeld 1 'S * (02151) 28222 and 20469 Ξ 853578

Summary:

The invention relates to a device for separating liquids and solids, in particular in sewer cleaning and sludge suction, with a closed elongated container in which a circumferentially sealed piston is arranged to be movable back and forth, which has an end wall with an adjustable flap and thereby separates the container into a dirty water compartment and a clean water compartment, the piston carrying a plurality of spaced-apart sieves of graded fineness on the dirty water side, and the finest sieve being arranged in front of the end wall. In order to improve the separation of particularly fine solids, the finest sieve (13) consists of a plurality of filter sieve tubes (16) arranged in parallel axes, the open ends of which are connected to a perforated disk (17) of the piston (2). In the preferred embodiment, the perforated disc (17) with the filter sieve tubes (16) is rotatably mounted in the piston (2), with an outlet (24) of a backwash line (27, 28) on the side of the perforated disk (17) facing away from the filter sieve tubes (16) , 29) is applied, via which water for flushing the filter screen tubes (16) is supplied during operation of the device. In addition, the perforated disc (17) can form the end of a cylinder (35) which is rotatably mounted in the piston (2) and which extends to in front of one of the upstream sieves, is open there and has ¹ conveying blades (36 or 37) ridden on the inside in the circumferential direction. carries the solids deposited behind the sieves (11 or 12) up to the area above the sieves

Slides (40, 41) .befördern .. di, e discard solids in this, '>''.': \ ^':.: ..I ··· ^·:

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PATENT ADVERTISER DR. STARK - MOERSER STR * 'ΛΑΟ '-'6-415O «REFitD - -f? (021 * 1) 28222 and 20469 - [g | 853578

so that the solids are brought in front of the sieves (11, 12).

(Fig. 3).

Claims (18)

Urgent. WALTER STARK PATENTANWALT loerser Strasse 140 D-4150 Krefeld 1 «ff (02151) 28222 and 20469 E 8 53 578 Claims: 1. Device for separating liquids and solids, especially for sewer cleaning and sludge suction, with a closed elongated container in which a circumferentially sealed against the container wall Piston is arranged to be movable back and forth, which has an end wall with an adjustable flap and this separates the container into a dirty water compartment and a clean water compartment, with the piston on the dirty water side several spaced sieves of graded fineness and the finest sieve in front of the End wall is arranged, characterized in that the finest sieve (13) consists of a plurality of parallelaxig arranged filter sieve tubes (16). 2. Apparatus according to claim 1, characterized in that the filter screen tubes (16) are connected with their open ends to a perforated disc (17) of the piston (2). 3. Apparatus according to claim 1 or 2, characterized in that the perforated disc (17) is fixedly arranged in the piston (2). 4. Device according to claim 1 or 2, characterized in that the perforated disc (17) driven rotatably in the piston (2) is mounted and sealed on the circumference against the piston (2). 5. Apparatus according to claim 4, characterized in that the perforated disc (17) rotatably on one in the piston (2) e Bank AG Krefeld 103/1525 BLZ 32070080 · 'äparliasee (treVeld 3US122 BUZ & ojsoooo ■ Postal check Essen 4055-431 BLZ 36010043 PATENT ADVERTISER DR STARK · MOERSER STR. 140 - 'b & 41 SO "KREFf = Lb *« 8 »(021 * 51) 2» 22 and 20469 - fg | 853578 arranged axis (20) or on a rotatably mounted shaft (33). 6. Apparatus according to claim 5, characterized in that the shaft (33) or axle (20) is mounted at least on the end wall (5). 7. Device according to one of claims 4 to 6, characterized characterized in that the filter screen tubes (16) at least are arranged in a pitch circle and with their closed ends on a spoke wheel (23) or another perforated disc (34) are supported, which or which is also mounted on the shaft (33) or the axis (22). 8. Device according to one or more of claims 4 to 7, characterized in that the open ends of the filter screen tubes (16) to the end wall (5) are executed and that on the end wall (5) facing side of the perforated disc (17) a fixed outlet (24) of a backwash line (27,28,29) at a circumferential point of the associated Pitch circle is present. 9. Apparatus according to claim 8, characterized in that the outlet (24) is arranged in the upper container part. 10 device according to claim 3 or 9, characterized in that that a sliding seal (25) is arranged between the outlet (24) and perforated disc (17). 11. Device according to one of claims 8 to 10, characterized characterized in that the outlet (24) is resiliently pressed against the perforated disc (17). 12. Device according to one of claims 8 to 11, characterized characterized in that the outlet is arranged at the end of a corrugated pipe (26) supported on the end wall (5). PATENT ADVOCATE DR. STARK · MOERSER STR. 140 · "D-4150'KRi-FeU? ·« G »(02t Si") 2> S »22 and 20469 · [R] 853578 13. The device according to one or more of claims 8 to 12, characterized in that the return line (27, 28,29) passed through the end wall (5) at least into the pure water compartment (10) and there at least partially is designed as a flexible line (28). 14. The device according to one or more of claims 4 to 13, characterized in that the filter screen tubes (16) supporting perforated disc (17) on the circumference is sealed against the piston (2) and extends into the space between the coarse screen (11) TO and fine sieve (12) extending and there open cylinder (35) is connected, the inside and each conveyor blades arranged one behind the other in the circumferential direction behind the levels of the coarse screen (11) and fine screen (12) (36 or 37) and that above the coarse sieve (11) and the fine sieve (12) each slide (40 and 41) is arranged are that of the conveyor blades (36,37) behind the coarse sieve (11) or the fine sieve (12) sludge picked up and thrown onto the associated chute (40 or 41) in front of the coarse sieve (11) or the fine sieve (12) convey. 15. The device according to claim 14, characterized in that the coarse sieve (11) and the fine sieve (12) are rotatably arranged and their upper portions each as the chutes (40 41) are formed. 16. The apparatus of claim 14 or 15, characterized in that the upper channel .ten of the chutes (40,41) as ■; Sealing lips (42,43) are formed with next to the; Conveying blades (36,37) arranged sealing rings (38,39) \ seal. ί 17. Device according to one or more of the claims 4 to 16, characterized in that the shaft (33) or axle (2G) is mounted in the stationary coarse screen (11). PATENT ADVOCATE DR. STARK · MOERSER STR. Ϊ40, D-4150, KBEFfilD 28222 and 20469 853578 18. Device according to one or more of the claims 4 to 17, characterized in that the shaft (33) or the axis (20) is hollow and connected to one Pump (30) or the like is connected and that in front of the fine sieve (12) and / or in front of the coarse sieve (11) Nozzles (47) are connected to the shaft (33) or axis (20), which are attached to the associated sieve (12 or 11) are directed.