DE102022127838B4 - Sewage sludge filter with mechanical cleaning and an integrated mechanical discharge system - Google Patents

Abstract

Cleaning device (1) for removing solids from a liquid, in particular sewage sludge, comprising the following components:
a. a filter body (2), which is mounted inclined with an angle of inclination Phi and which is hollow cylindrical with two ends, and which has at least one filter element (22), the at least one filter element (22) being inside the filter body (2) and on is arranged at the end of the filter body (2), which is located at the lowest point of the filter body (2),
b. A first drive unit (3), which is connected to the filter element (22) in such a way that the first drive unit (3) carries out a rotational movement of the filter element (22) about its vertical axis,
c. A discharge device (5), comprising a spiral conveyor screw (51), a second drive unit (52), a press chamber (53) with a press screw (54), the spiral conveyor screw (51) being in the filter body (2) and outside the filter element (22). is arranged in such a way that a filter cake building up on the filter element (22) is transported into the press chamber (53) by the spiral conveyor screw (51), which is driven to the filter element (22) by means of the second drive unit (52), the press chamber (53) has a press screw (54).

Description

The invention relates to a cleaning device for removing solids from a liquid, in particular sewage sludge.

In most sewage treatment plants there is a pre-cleaning system in the inlet of the sewage sludge for further treatment, consisting of a screen and/or a filter sieve in order to remove coarse components from the sewage sludge, depending on the mesh size of the screen and the pre-filtration.

Despite the installation of this pre-cleaning stage, the sewage sludge contains non-organic substances and impurities including polyester microfibers and microplastic components.

The disclosure document WO 99/13 959 A1 discloses a device for screening and compacting. The device includes an inlet for a liquid/solid and/or sludge mixture, an outlet for the liquid after sieving and a cylindrical rotary sieve. The sieve is located inside a closed container, and the inlet for the mixture and the outlet for the sieved liquid are connected to the container. The liquid-solid-sludge mixture is introduced into the container under pressure and the solids and/or sludge separated from the liquid are compacted by the action of the pressure. Means for removing the compacted solids and/or sludge are also provided.

The Japanese patent specification JP 2004 - 130274 A discloses a screw extruding dewatering system and its method. A batch press dewatering system for inorganic sludge in a small water treatment plant, in particular with the aim of improving the function and saving space, is proposed, in which a multi-belt spiral is arranged internally in the system between an outer cylindrical screen and an inner cylindrical screen in a filtration system. While two sieves are rotated differently, a stock solution is forced into a filtration chamber by an axial shaft of the inner cylinder to perform solid-liquid separation. The sludge in the filtration chamber is clumped to complete the sludge pressing process, and the cake is discharged by rotating the belt spiral after a cake discharge valve of the chamber is retracted. The surface of the filter medium is scraped off the belt spiral. This eliminates the need to wash the filter medium every time the cake is discharged. The cake discharge is promoted by the belt spiral. As the screens are rotated along with the belt spiral, cleaning water is expelled to wash the entire surface of the filter media.

In US 2009 / 0 050 580 A1 It is proposed to provide a filtration device and a filtration method in which dewatering performance is improved while achieving downsizing of the device. The filter device includes a cylindrical or conical inner screen and an outer screen arranged concentrically, and a spiral solid wall disposed in a filter space between the inner screen and the outer screen. Only the inner screen and/or the outer screen is/are rotated about a shaft center, while the spiral solid wall is not rotated. During this manipulation process, a treated feed is fed into the filter room from one end of the filter room so that the treated liquid is filtered through the inner sieve and through the outer sieve so that each filtrate is discharged to the outside and a cake is formed from the other end of the filter room.

And in another Japanese document JP H09-10 522 A, the use of an inexpensive screw with the same volume and achieving a sufficient dewatering effect by arranging a hydration plug that synchronously rotates the solid content and compresses a material to be transported on the upper portion of the screw and a drain pipe while the solid-liquid separation is carried out in an apparatus for performing the solid-liquid separation by the screw and discharging the solid contents. The shredded waste discharged from a cleaning container is passed through a feed pipe together with process water and introduced into an annular space of a filter section. The waste and process water are moved upwards by a belt screw that is rotated by a motor. At this point, the water contents are passed and drained from an inner filter cylinder through a drain pipe, as well as through an outer filter cylinder and a drain pipe. On the other hand, since the volume formed by the action of a dehydration plug installed on the upper portion of the screw, namely the volume formed by the plug and the outer filter cylinder, is smaller than the delivery volume of the screw, the garbage is reduced in volume and dehydrated. The material to be conveyed is then conveyed into the drain pipe 21 by a shovel placed on the drainage plug.

Presentation of the invention

It is therefore the object of the invention to eliminate the disadvantages of the prior art and to provide a cleaning device or a filtration system and a method by means of which the filtration fineness of the sewage sludge is significantly improved.

This problem is solved by the features listed in the claims.

• Einen Filterkörper, welcher geneigt oder horizontal mit einem Anstiegswinkel φ gelagert ist und welcher hohlzylindrisch mit zwei Enden ausgestaltet ist. Im Filterkörper ist zumindest ein Filterelement angeordnet, wobei das zumindest eine Filterelement an dem Ende des Filterkörpers angeordnet ist, welches am tiefsten Punkt des Filterkörpers gelegen ist. Eine tiefer gelegenes Ende des Filterkörpers entsteht durch die geneigte Lagerung des hohlzylindrischen Filterkörpers. Ferner weist die Reinigungsvorrichtung eine erste Antriebseinheit auf, welche derart mit dem Filterelement im Filterkörper verbunden ist, dass diese erste Antriebseinheit eine Drehbewegung des Filterelementes um seine vertikale Achse ausführt. Bevorzugt handelt es sich bei dieser Drehbewegung um eine 360°-Drehbewegung des Filterelementes um seine vertikale Achse. Ferner weist die Reinigungsvorrichtung eine Austragseinrichtung auf. Diese Austragseinrichtung weist gemäß verschiedener Ausführungsformen eine Spiralförderschnecke, eine zweite Antriebseinheit und eine Presskammer mit einer Pressschnecke auf. Die Spiralförderschnecke ist im Filterkörper und außerhalb des Filterelementes derart angeordnet ist, dass bei einem Filtrierungsprozess einer fluiden Masse, beispielsweise Klärschlamm, ein sich auf dem Filterelement aufbauender Filterkuchen mit der Spiralförderschnecke in die Presskammer zur Pressschnecke abtransportiert wird. (Als Filterkuchen wird der Rückstand aus zurückgehaltenen Stoffen bezeichnet, der sich bei der Filtration auf der Oberfläche eines Filterelementes bildet.) Hierfür wird die Spiralförderschnecke gemäß verschiedener Ausführungsformen mittels einer zweiten Antriebseinheit, unabhängig zum Filterelement, beispielsweise in entgegengesetzte Richtung zum Filterelement, angetrieben. Die Pressschnecke in der Presskammer presst den abgetrennten und transportierten Filterkuchen und transportiert diesen zur Austrittsöffnung.

According to various embodiments, the cleaning device according to the invention for removing solids from a liquid, in particular sewage sludge, has the following components:

• A filter body, which is mounted inclined or horizontally with an angle of inclination φ and which is hollow cylindrical with two ends. At least one filter element is arranged in the filter body, the at least one filter element being arranged at the end of the filter body, which is located at the lowest point of the filter body. A lower end of the filter body is created by the inclined mounting of the hollow cylindrical filter body. Furthermore, the cleaning device has a first drive unit, which is connected to the filter element in the filter body in such a way that this first drive unit carries out a rotational movement of the filter element about its vertical axis. This rotational movement is preferably a 360° rotational movement of the filter element about its vertical axis. Furthermore, the cleaning device has a discharge device. According to various embodiments, this discharge device has a spiral conveyor screw, a second drive unit and a press chamber with a press screw. The spiral conveyor screw is arranged in the filter body and outside the filter element in such a way that during a filtration process of a fluid mass, for example sewage sludge, a filter cake building up on the filter element is transported away with the spiral conveyor screw into the press chamber to the press screw. (The residue of retained substances that forms on the surface of a filter element during filtration is referred to as filter cake.) For this purpose, according to various embodiments, the spiral conveyor screw is driven by means of a second drive unit, independently of the filter element, for example in the opposite direction to the filter element. The press screw in the press chamber presses the separated and transported filter cake and transports it to the outlet opening.

According to various exemplary embodiments, the press screw is driven together with the spiral conveyor screw by means of the second electric motor.

Furthermore, according to various exemplary embodiments, the cleaning device has at least one wear strip, which stabilizes the press screw and/or the spiral conveyor screw.

According to various exemplary embodiments, the angle of rise Phi φ, by which the hollow cylindrical filter body is mounted inclined, is acute-angled. The angle Phi φ is preferred in a range from 1° to 50°. The angle of inclination Phi φ is particularly preferred in a range between 10 and 35°. The angle of inclination Phi φ 25° is particularly preferred.

Furthermore, the filter element has a stripping element, which is arranged within the filter body in such a way that during the vertical rotational movement of the filter element, a filter cake building up on the filter element is separated and discharged into the filter body. Two stripping elements are preferably arranged opposite one another on the filter element.

The spiral conveyor screw and press screw each have a screw thread, with the screw thread of the press screw preferably being designed in opposite directions to the spiral screw according to various exemplary embodiments.

Furthermore, the press chamber preferably has a closure side which is ventilated, so that sticking/pressing of the filter cake at the end of the press chamber or at the end of the cleaning device is prevented.

The press screw preferably has a discharge blade, which in turn is preferably arranged in the area of the outlet opening. The discharge scoop ensures that the separated and pressed filter cake is directed to the outlet opening.

According to various exemplary embodiments, the cleaning device further has a bypass line, which is arranged at the outlet opening and/or at the pressing chamber in such a way that a residual moisture liquid prevailing there is returned to the filter body. For this purpose, the bypass line is preferably arranged at a lowest point in front of the outlet opening and at the end of the filter body, which is located at the lowest point of the filter body. By means of this arrangement The separated organics and liquid can flow back from the press chamber into the filter housing via the rise angle Phi <p, for example of 25 degrees.

When the filter cake is sufficiently pressed in the pressing chamber and the filling quantity is reached, the outlet opening opens and the filter cake is automatically transported out of the cleaning system by means of the press screw and/or by means of the discharge shovel. A slide is preferably arranged at the outlet opening, which opens automatically when enough filter cake is pressed against the outlet opening and/or the slide.

Preferably, a desired dry substance value of the filter cake, from which the filter cake should be ejected from the cleaning device, can be set. For this purpose, according to various embodiments, the cleaning device preferably has a control unit and/or a regulation unit and/or a sensor unit. For example, the dry matter value can be determined using a sensor unit. For example, the outlet opening can be opened automatically using a control unit. By means of the control unit, for example, the cleaning device can be controlled based on preset target and/or actual values.

According to various embodiments, the cleaning device also has spray nozzles for cleaning the filter element, the spiral conveyor screw and/or the press screw. The spray nozzles are preferably water cleaning nozzles which have a connection, for example to a water supply and/or to a water reservoir and/or to a cleaning liquid.

Furthermore, the cleaning device has an inlet opening, via which the pre-cleaned sewage sludge is fed to the filter system/cleaning system, for example by means of a sewage sludge feed pump. A pressure relief valve is attached to the inlet of the filter system to prevent excessive pressure. In the front area of the filter body, which is arranged in a horizontal version with an angle of rise φ of preferably approximately 25 degrees, there is a filter element which carries out a 360 degree rotational movement via an electric motor (preferably the filter element is here as an edge gap filter with the possibility of Use of different filter ratings). Opposite wipers are installed on the filter outer diameter. These mechanical wipers are preferably spring-loaded and adjustable. A scraper is divided into segments along its longitudinal axis and has sharp edges. Due to the 360 degree rotation of the filter element, the filter cake that builds up on the filter element is separated and drained into the filter housing of the filter body. This separated filter cake contains all non-organic components and contaminants, including microfiber and microplastic particles. A spiral conveyor screw is arranged around the entire filter element with mechanical cleaning. This spiral conveyor screw is preferably driven independently of the filter element by an electric motor that is installed at the outlet of the filter element and also has a 360 degree rotation. The filter element and/or the spiral conveyor screw or the press screw can be cleaned using spray nozzles. The spiral conveyor screw conveys the separated filter cake with all impurities into a press chamber.

The press screw is located in this press chamber, which is preferably also driven by the electric motor of the spiral conveyor screw, which is preferably connected to the press screw. To stabilize the filter, the press screw is preferably connected conically to the filter element via a bushing. From the beginning of the cleaning system to the discharge chute/discharge opening, wear strips stabilize the screws. The filter cake that has been separated and conveyed out of the filtration element is taken over by the press screw and pressed and compacted in the press chamber against an electrically driven slide (e.g. plate slide) at the outlet opening of the cleaning system. The press screw runs in opposite directions in the area of the press chamber and the closing side of the press chamber is ventilated. This rear ventilation also applies to an ejection chute, which is arranged in front of the outlet opening. The ejection chute is preferably round. The counter-rotating press screw is equipped with a discharge blade in the area of the discharge chute and conveys the filter cake into the discharge chute. The residual moisture created there is returned to the filter body via a bypass line installed at the lowest point of the ejection chute. The bypass line is separated with a sieve at the ends to prevent the filter cake from clogging the bypass line. The separated organic matter and liquid can flow back from the press chamber into the filter body via the rise angle of 25 degrees. If the filter cake is sufficiently pressed (which can be adjusted to the dry substance value to be achieved) in the press chamber and the filling quantity is reached, the knife gate opens at the outlet of the filter housing and the press screw automatically conveys the filter cake out of the filter system. The filtration process does not have to be interrupted while the filter cake is being discharged from the press chamber, but runs continuously lich further. After the filter cake has been discharged, the knife gate closes and the filter cake is pressed against the closed knife gate again until the next discharge process. The discharged filter cake with all impurities can then be disposed of in a regulated manner with a very good residual moisture content. The cleaned sewage sludge flows via the filter element into a so-called clean room and is fed from this clean room to another dewatering process that usually takes place. If necessary, the pressure at the outlet of the clean room can be regulated with a pressure relief valve.

The object is also achieved by means of a method for removing solids from a liquid using a cleaning device according to claim 1.

1. a. Einleiten einer fluiden Masse bestehend aus Flüssigkeit und Feststoffen in eine Reinigungsvorrichtung, wobei die fluide Masse in ein Filterelement eines Filterkörpers eingeführt wird, wobei das Filterelement mittels einer ersten Antriebseinheit in eine vertikale Drehbewegung um sich selbst versetzt wird, wobei die vertikale Drehbewegung bevorzugt eine 360°-Drehbewegung ist und
2. b. Austragen eines Filterkuchens, welcher außenseitig des Filterelementes entsteht, mittels einer Austragseinrichtung, wobei die Austragseinrichtung eine Spiralförderschnecke aufweist, welche von einer zweiter Antriebseinheit ebenfalls in eine Drehbewegung versetzt wird und dadurch den Filterkuchen vom Filterelement in eine Presskammer mit einer Pressschnecke befördert, wobei die Pressschnecke den abgetrennten und transportierten Filterkuchen presst und zur Austrittsöffnung transportiert.

The process has the following process steps:

1. a. Introducing a fluid mass consisting of liquid and solids into a cleaning device, the fluid mass being introduced into a filter element of a filter body, the filter element being set into a vertical rotational movement about itself by means of a first drive unit, the vertical rotational movement preferably being 360° -rotational movement is and
2. b. Discharging a filter cake, which is created on the outside of the filter element, by means of a discharge device, the discharge device having a spiral conveyor screw, which is also set in a rotational movement by a second drive unit and thereby conveys the filter cake from the filter element into a press chamber with a press screw, the press screw separated and transported filter cake is pressed and transported to the outlet opening.

According to various exemplary embodiments, a filter cake building up on the filter element is separated off by means of at least one stripping element during the vertical rotational movement of the filter element and discharged into the filter body.

Furthermore, according to various exemplary embodiments, a residual moisture liquid prevailing at the outlet opening in the filter cake is returned to the filter body by means of a bypass line which is arranged at the outlet opening.

According to various embodiment variants, if the filter cake is sufficiently pressed in the pressing chamber and the filling quantity is reached, the filter cake is conveyed out of an outlet opening from the cleaning device. Preferably, a dry substance value to be achieved for the filter cake can be set.

After the discharge of the filter cake has been completed, the outlet opening closes again and the filter cake is pressed again against the closed outlet opening until the next discharge process.

Implementation of the invention

• 1 eine Ausführungsvariante der erfindungsgemäßen Reinigungsvorrichtung im Längsschnitt

The invention is explained in more detail using an exemplary embodiment. This shows

• 1 an embodiment variant of the cleaning device according to the invention in a longitudinal section

In the description reference is made to the accompanying drawings in which specific embodiments in which the arrangement according to the invention can be practiced are shown by way of illustration. In this regard, directional terminology such as "top", "bottom", etc. is used with reference to the orientation of the drawings described. The directional terminology is for illustrative purposes and is not limiting in any way.

It is to be understood that other embodiments may be used and structural or logical changes may be made without departing from the scope of the present invention. It is to be understood that the features of the various exemplary embodiments described herein may be combined with one another unless specifically stated otherwise. The following detailed description is, therefore, not to be taken in a limiting sense, and the scope of the present invention is defined by the appended claims.

In the context of this description, the terms "connected", "connected" and "coupled" are used to describe both a direct and an indirect connection (e.g. ohmic and / or electrically conductive, e.g. in an electrically conductive connection), a direct or indirect Connection as well as a direct or indirect coupling.

In the figures, identical or similar elements are given identical reference numerals where appropriate.

In 1 a cleaning device 1 according to the invention is shown in longitudinal section. The cleaning device 1 for removing solids substances from a liquid, especially sewage sludge, has the following components:

The cleaning device 1 has a hollow cylindrical filter body 2 with two ends, the filter body 2 being mounted inclined with an angle of inclination φ. According to various exemplary embodiments, the filter body 2 has at least one filter element 22, wherein the at least one filter element 22 is arranged inside the filter body 2 and at the end of the filter body 2, which is located at the lowest point of the filter body 2. A first drive unit 3 is arranged on the filter element 22 in such a way that the at least one filter element 22 executes a rotational movement about its vertical axis.

Furthermore, the cleaning device 1 has a discharge device 5. According to various embodiments, the discharge device has at least one spiral conveyor screw 51, a second drive unit 52 and a press chamber 53 with a press screw 54. The spiral conveyor screw 51 is arranged in the filter body 2 and outside the filter element 22 in such a way that a filter cake building up on the filter element 22 is conveyed into the press chamber 53 with the spiral conveyor screw 51. For this purpose, the spiral conveyor screw 51 is driven independently (for example in the opposite direction) to the filter element 22 by means of the second drive unit 52. The press chamber 53 has a press screw 54, the press screw 54 pressing the separated and transported filter cake and transporting it to the outlet opening 55.

Preferred and as in 1 shown is the press screw 54 connected to the spiral conveyor screw 51. Both screws are preferably driven by the second drive unit 52.

To stabilize the press screw 54 and/or the spiral conveyor screw 51, at least one wear strip 4 is arranged in the filter body 2. In the exemplary embodiment 1 Two wear strips 4 are arranged in the filter body 2. These can be arranged opposite each other or offset at a certain angle to one another. The use of several wear strips 4 is conceivable.

Furthermore, the press screw 54 is preferably conically connected to the filter element 22 via a bushing/centering bushing 9 to stabilize the filter.

According to various embodiments, the angle of rise φ is acute. The angle φ is preferably an angle in a range from 1° to 35°. The angle of inclination φ is particularly preferably equal to 25°.

Furthermore, the filter element 22 of the cleaning device 1 according to various embodiments has at least one stripping element 21, which is arranged within the filter body 2 in such a way that during the vertical rotational movement of the filter element 22, a filter cake building up on the filter element 22 is separated and drained into the filter body 2 . According to various embodiments, but not in 1 shown, two or more stripping elements 21 can also be arranged, which are arranged, for example, opposite each other or are arranged offset at an angle to one another.

According to various embodiments and as in 1 shown, the press screw 54 is designed in the opposite direction to the spiral screw 51.

Furthermore, the pressing chamber 53 preferably has a closure side which is ventilated.

Furthermore, the press screw 54 preferably and as in 1 shown a discharge blade 57, which is arranged in the area of the outlet opening 55.

According to various embodiments, the cleaning device 1 further comprises a bypass line 56, which is arranged at the outlet opening 55 and/or at the pressing chamber 53 in such a way that a residual moisture liquid prevailing there is returned to the filter body 22. The bypass line 56 is preferred and as in 1 shown at a lowest point in front of the outlet opening 55 and arranged on the filter body 2, the bypass line 56 preferably being arranged at the lowest point of the filter body 2, so that the organics and liquid separated in the cleaning device 1 over the rise angle φ, preferably from φ =25 degrees can flow back from the press chamber into the filter housing/filter body 2. The bypass line 56 can also be arranged at other points on the filter body 2/the cleaning device 1, but in such a way that liquid is returned from the outlet opening 55 back into the filter body 2. There are preferably sieves at the ends of the bypass line 56 (inlet and outlet of the bypass line 56) so that the filter cake does not get into the bypass line 56 or clog it.

The cleaning device 1 preferably has a control unit and/or a regulation unit and/or a sensor unit (in 1 but not shown).

When the filter cake is sufficiently pressed (which can be adjusted to the dry matter value to be achieved) in the pressing chamber and when the filling quantity is reached, the outlet opens opening 55, for example a slide, and the press screw 54 automatically conveys the filter cake from the cleaning device 1.

The cleaning device 1 according to the invention preferably has spray nozzles for cleaning the filter element 22, the spiral conveyor screw 51 and/or the press screw 54, as in 1 shown.

The sewage sludge or the pre-cleaned sewage sludge is introduced into the cleaning system 1 via an inlet 8. A pressure relief valve is preferably arranged at the inlet 8 of the cleaning system 1 to avoid excessive pressure.

The cleaned sewage sludge flows via the filter element 22 into a clean room and then via an outlet 7 out of the cleaning system 1 for further processing, for example for further processing in a dewatering process that usually takes place. Any pressure that may prevail at the outlet 7 can be regulated, for example, via a pressure relief valve arranged there.

Cleaning the filter element 22 is conceivable: For this purpose, the filter body 2 can be backwashed against the filtration direction. This can be done, for example, via a flushing connection on the filtrate outlet connection/outlet 7.

A fitting group 561 for emptying residual moisture can be integrated into the bypass line 56, which is attached to the bypass line 56, for example via an additional T-piece. By switching the fitting group 561, for example by means of valves, residual moisture 11 can be emptied into a storage container. By further switching the fitting group 561, sieves can also be cleaned, for example at the end of the bypass line 56 in the event of a blockage, using a blast of compressed air with compressed air 10. Likewise, a bridge formation made of non-organic components, which can form on the flange of the ejection chute 5/55 by compression, can be destroyed by means of a blast of compressed air 10 and leads to an improved filter cake discharge when the outlet opening is opened, for example by means of a slide. In 2 the cleaning device according to the invention is shown with an additional fitting group 561 in a bypass line 56.

Alternatively or in addition to the bypass line 56 and the fitting group for emptying residual moisture, a drainage device 551 can be integrated at the outlet opening 55. This can be arranged, for example, between a flange of the ejection chute of the outlet opening 55 and a slide. A slotted screen 5510 with longitudinal bars is integrated into this dewatering device 551, via which residual liquid can be better discharged from the pressed filter cake with all impurities with a larger filtration area. For this purpose, the residual moisture liquid collects in a drainage chamber 5511 and can be drained via a drainage nozzle. By arranging the split screen 5510 with longitudinal bars, the axial gaps between the split bars are cleaned better during filter cake discharge. Such a drainage device 551 is in 3 shown. For this purpose, the drainage device 551 is arranged at the outlet opening. A detailed representation of the drainage device 551 is in 4 shown.

The fitting group 561 described above can also be connected to the drainage device 551 independently of the bypass line 56.

Reference symbols

1

Cleaning device

2

Filter body

21

stripping element

22

Filter element

3

First drive unit

4

Wear strips

5

Discharge facility

51

Spiral conveyor screw

52

second drive unit

53

Press chamber

54

press screw

55

Exhaust opening (with or without slider)

551

drainage device

5510

slotted screen

5511

Drainage chamber

5512

Drainage socket

56

Bypass line

561

Fitting group for draining residual moisture

57

Discharge scoop

6

Cleaning nozzles

7

Outlet (with pressure relief valve and/or with flushing connection)

8th

Inlet (with pressure relief valve)

9

Bushing/centering bushing

10

Compressed air

11

residual moisture

φ

Tilt angle/rise angle

Claims (16)

Cleaning device (1) for removing solids from a liquid, in particular sewage sludge, comprising the following components: a. a filter body (2), which is mounted inclined with an angle of inclination Phi and which is hollow cylindrical with two ends, and which has at least one filter element (22), the at least one filter element (22) being inside the filter body (2) and on is arranged at the end of the filter body (2), which is located at the lowest point of the filter body (2), b. A first drive unit (3), which is connected to the filter element (22) in such a way that the first drive unit (3) carries out a rotational movement of the filter element (22) about its vertical axis, c. A discharge device (5), comprising a spiral conveyor screw (51), a second drive unit (52), a press chamber (53) with a press screw (54), the spiral conveyor screw (51) being in the filter body (2) and outside the filter element (22). is arranged in such a way that a filter cake building up on the filter element (22) is transported into the press chamber (53) by the spiral conveyor screw (51), which is driven to the filter element (22) by means of the second drive unit (52), the press chamber (53) has a press screw (54). Cleaning device (1) according to Claim 1 , characterized in that the press screw (54) is connected to the spiral conveyor screw (51) and the press screw (54) is driven together with the spiral conveyor screw (51) by means of the second drive unit (52). Cleaning device (1) according to Claim 1 or 2 , further comprising at least one wear strip (4), which stabilizes the press screw (54) and / or the spiral conveyor screw (51). Cleaning device (1) according to one of Claims 1 until 3 , characterized in that the rise angle Phi φ is acute-angled. Cleaning device (1) according to one of claims 1 to 4, characterized in that the rise angle Phi is equal to 25°. Cleaning device (1) according to one of Claims 1 until 5 , further comprising at least one stripping element (21), which is arranged within the filter body (2) in such a way that during the vertical rotational movement of the filter element (22), a filter cake building up on the filter element (22) is separated and discharged into the filter body (2). becomes. Cleaning device (1) according to Claim 6 , characterized in that the two stripping elements (21) are arranged opposite each other. Cleaning device (1) according to one of the preceding claims, characterized in that the press screw (54) is designed in opposite directions to the spiral screw (51). Cleaning device (1) according to one of the preceding claims, characterized in that the pressing chamber (53) has a closure side which is ventilated. Cleaning device (1) according to one of the preceding claims, characterized in that the press screw (54) has a discharge blade (57) which is arranged in the area of the outlet opening (55). Cleaning device (1) according to one of the preceding claims, further comprising a bypass line (56), which is arranged at the outlet opening (55) and/or at the press chamber (53) in such a way that a residual moisture liquid prevailing there flows into the filter body ( 22) is returned. Cleaning device (1) according to Claim 11 , characterized in that the bypass line (56) is arranged at a lowest point in front of the outlet opening (55) and at the end of the filter body (2), which is located at the lowest point of the filter body (2). Cleaning device (1) according to one of the preceding claims, further comprising a control unit and/or a regulation unit and/or a sensor unit Cleaning device (1) according to one of the preceding claims, further comprising spray nozzles for cleaning the filter element (22), the spiral conveyor screw (51) and/or the press screw (53). Cleaning device (1) according to Claim 14 , characterized in that a flushing connection is arranged at the outlet (7) for cleaning the filter element (22), so that the filter body is cleaned against the filtration direction by means of backwashing Cleaning device (1) according to Claim 1 , characterized in that a drainage device (551) is arranged on the discharge device (5) and/or on the outlet opening (55) for residual moisture emptying and/or a fitting group (561) for residual moisture emptying is arranged in the bypass line (56). .

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