EP3427937B1 - Conical worm of a conical worm separator - Google Patents
Conical worm of a conical worm separator Download PDFInfo
- Publication number
- EP3427937B1 EP3427937B1 EP18181313.0A EP18181313A EP3427937B1 EP 3427937 B1 EP3427937 B1 EP 3427937B1 EP 18181313 A EP18181313 A EP 18181313A EP 3427937 B1 EP3427937 B1 EP 3427937B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- screw
- reinforcing element
- longitudinal axis
- screw blade
- blade
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 230000003014 reinforcing effect Effects 0.000 claims description 36
- 238000000034 method Methods 0.000 claims description 13
- 238000010146 3D printing Methods 0.000 claims description 8
- 238000004519 manufacturing process Methods 0.000 claims description 8
- 230000002787 reinforcement Effects 0.000 description 48
- 210000002414 leg Anatomy 0.000 description 20
- 230000007704 transition Effects 0.000 description 11
- 239000007788 liquid Substances 0.000 description 5
- 210000001364 upper extremity Anatomy 0.000 description 5
- 239000007787 solid Substances 0.000 description 4
- 241000237858 Gastropoda Species 0.000 description 3
- 230000000903 blocking effect Effects 0.000 description 3
- 230000010006 flight Effects 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 238000005245 sintering Methods 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- 239000000654 additive Substances 0.000 description 2
- 230000000996 additive effect Effects 0.000 description 2
- 229910045601 alloy Inorganic materials 0.000 description 2
- 239000000956 alloy Substances 0.000 description 2
- 238000005266 casting Methods 0.000 description 2
- 239000000919 ceramic Substances 0.000 description 2
- 210000003608 fece Anatomy 0.000 description 2
- 239000010871 livestock manure Substances 0.000 description 2
- 238000003754 machining Methods 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 239000002002 slurry Substances 0.000 description 2
- 210000000689 upper leg Anatomy 0.000 description 2
- 241000209035 Ilex Species 0.000 description 1
- 239000010941 cobalt Substances 0.000 description 1
- 229910017052 cobalt Inorganic materials 0.000 description 1
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 239000010842 industrial wastewater Substances 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 229910001338 liquidmetal Inorganic materials 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 239000010841 municipal wastewater Substances 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 238000007747 plating Methods 0.000 description 1
- 239000010801 sewage sludge Substances 0.000 description 1
- 239000010802 sludge Substances 0.000 description 1
- UONOETXJSWQNOL-UHFFFAOYSA-N tungsten carbide Chemical compound [W+]#[C-] UONOETXJSWQNOL-UHFFFAOYSA-N 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B30—PRESSES
- B30B—PRESSES IN GENERAL
- B30B9/00—Presses specially adapted for particular purposes
- B30B9/02—Presses specially adapted for particular purposes for squeezing-out liquid from liquid-containing material, e.g. juice from fruits, oil from oil-containing material
- B30B9/12—Presses specially adapted for particular purposes for squeezing-out liquid from liquid-containing material, e.g. juice from fruits, oil from oil-containing material using pressing worms or screws co-operating with a permeable casing
- B30B9/121—Screw constructions
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F27/00—Mixers with rotary stirring devices in fixed receptacles; Kneaders
- B01F27/05—Stirrers
- B01F27/051—Stirrers characterised by their elements, materials or mechanical properties
- B01F27/052—Stirrers with replaceable wearing elements; Wearing elements therefor
Definitions
- the invention relates to a screw which is used in particular in press screw separators.
- the auger has reinforcing elements on the auger flights.
- the invention relates to a method for producing the worm.
- Press screw separators are for example in DE 20 2012 011 864 U1 and DE 20 2012 008 077 U1 described.
- DE 42 14 217 A1 Fig. 1 shows angular reinforcing elements, referred to herein as wear elements, on the flights of the screw of a press screw separator.
- EP 0 034 847 A1 shows a workpiece, such as a screw conveyor, with armor plating.
- the armor consists of profiles or profile sections made of a hard alloy.
- the hard alloy in powder or paste form is introduced into a suitably designed mold and sintered.
- DE 31 40 364 A1 discloses a screw conveyor, particularly for solid bowl centrifuges.
- the conveyor screw is equipped with wear plates that are lined up seamlessly.
- the wear plates are provided with a groove starting from their inner edge so that they can be pushed radially onto the screw flight.
- DE 39 07 817 A1 shows a device and a method for dewatering liquid manure and sewage sludge.
- the material to be dewatered is fed into a reducing screw.
- the auger is sealed off from the trough, which serves as a screen, by means of a lip seal.
- the reduction in pitch of the screw corresponds to the removal of liquid from the material to be dewatered.
- the exemplary additive manufacturing of components made of metal shows CA 29 39 609 A1 .
- This screw is used in particular in a press screw separator.
- a press screw separator is, for example, in DE 20 2012 011 864 U1 and DE 20 2012 008 077 U1 described.
- the press screw separator includes a screen.
- the screw is arranged in the screen and is set in rotation by means of a drive.
- the auger can also be stationary and the screen rotated.
- a slurry for example liquid manure, municipal waste water or industrial waste water, is fed into the press screw separator.
- the pulp is pressed out along the screw. Liquid components of the slurry pass radially outwards through the sieve and flow off.
- a plug of solid forms at the end of the screw. This slug is usually held with an expulsion regulator.
- the area facing the plug and the radial side of the at least one screw blade are subject to relatively high mechanical stress and corresponding wear.
- the screw according to the invention comprises a core.
- the soul extends along a longitudinal axis.
- a radial direction is defined perpendicular to the longitudinal axis.
- a circumferential direction is defined about the longitudinal axis.
- the worm comprises at least one worm blade.
- two or three screw blades can also be arranged on the core.
- the at least one screw blade is wound around the core in the circumferential direction and along the longitudinal axis.
- the worm blade can also be referred to as a worm helix.
- a front axial side points forward with respect to the conveying direction of the screw. Opposite the front axial side is a rear axial side. The two axial sides are connected to one another via a relatively narrow radial side. The radial side is essentially perpendicular to the radial direction.
- the radial side faces the screen; the front axial side faces the exhaust regulator.
- the pamphlet shows DE 42 14 217 A1 angular wear elements covering the front axial side and the radial side.
- At least one reinforcement element is used, preferably several of the reinforcement elements on each screw blade.
- the configuration of a single reinforcement element is described in each case.
- several of the reinforcing elements can easily be used one behind the other on a screw blade.
- the single reinforcement member has a U-shaped cross section.
- the reinforcing member is applied to the radial side of the screw blade so that a front leg of the U-shape abuts the front axial side and a rear leg of the U-shape abuts the rear axial side of the screw blade; the part of the reinforcement element connecting the two legs of the U-shape covers the radial side of the screw blade. Due to this U-shape, the reinforcement element is fastened in a form-fitting manner in both directions perpendicularly to the axial sides of the screw blade.
- the U-shape basically includes all cross-sectional shapes with two opposing, connected legs, such as a C-shape or V-shape. However, it is particularly preferred that the two legs lie parallel to one another.
- the geometric design of the worm blade and/or the pitch of the worm blade and/or the geometric design of the reinforcement element means that the reinforcement element can only be screwed onto the worm blade and not pushed in the radial direction.
- the form-fitting connection between the reinforcement element and the screw blade with respect to the radial direction is preferably achieved in that the reinforcement element extends over a relatively large angle ⁇ .
- This angle ⁇ is measured about the longitudinal axis and in a plane perpendicular to the longitudinal axis. If the reinforcement element extends, for example, by half a turn of the screw blade, then the angle ⁇ is 180°.
- the angle a over which the individual reinforcement element extends, is at least 30°, preferably at least 45°, more preferably at least 60°, particularly preferably at least 90°.
- the angle ⁇ is at least 120°, preferably at least 150°.
- the two legs of the reinforcing element are particularly preferably designed in such a way that they do not undercut the screw blade. This is achieved, for example, by a cross section in which the two legs are parallel to one another or by a V shape. As a result, the positive connection in the radial direction is only achieved by the relatively large angle ⁇ described and not by an undercut between the reinforcing element and the screw blade.
- the receiving area for the reinforcement element on the screw blade can have a simple geometry with flat surfaces.
- the individual reinforcement element is preferably manufactured in one piece. "One-piece production" is to be understood as meaning that the reinforcing element is not composed of several components. Thus, the reinforcing element is preferably manufactured from the solid by machining or by archetypes. The primary forming production is preferably carried out by casting, 3D printing or sintering.
- 3D printing includes all additive manufacturing processes, such as powder bed processes, free space processes, liquid metal processes or other layer construction processes.
- the green part of the reinforcement element can be produced in a conventional manner or also with 3D printing.
- a reinforcement element is preferably designed as a transition element. This transition element is first screwed onto the screw flight.
- the transition element preferably has a tapered section, so that the area of the screw blade formed by the reinforcement elements merges into the non-reinforced area of the screw blade without an appreciable edge.
- a reinforcement element is preferably designed as a closing element. This final element is screwed onto the screw blade last.
- the closing element preferably comprises a stop side which bears against the end of the screw blade and reinforces the screw blade in this area.
- At least one reinforcement element is preferably designed as an intermediate element.
- the intermediate element is located on the screw flight between the transition element and the final element.
- several of the intermediate elements can also be arranged between the transition element and the final element.
- a sleeve is pushed onto the core of the worm and fastened.
- the sleeve rests against the foremost reinforcement element (closing element) and thus prevents this reinforcement element from being twisted off or loosened in the circumferential direction.
- All other reinforcement elements are secured against twisting off or loosening in the circumferential direction by their form-fitting contact with the reinforcement element arranged further forward.
- the reinforcement element is preferably made of hard metal and/or hard ceramic.
- the sintered reinforcement element consists of a ceramic hard material, such as tungsten carbide and a tough matrix of cobalt and nickel or iron.
- the invention also includes a method for manufacturing a screw.
- the screw is designed in particular for use in a press screw separator.
- the screw already described is produced with the method.
- the core is provided, with at least one screw blade on the core is arranged.
- At least one reinforcement element is screwed onto this screw blade.
- the reinforcement element has the described U-shaped cross section. The untwisting takes place along the longitudinal axis and in the circumferential direction.
- the at least one reinforcement element is produced in one piece, preferably in a 3D print.
- a green body of the reinforcement element is preferably produced first.
- the green compact is preferably produced using 3D printing. Subsequently, the green body is sintered to form the reinforcing member.
- the green compact is particularly preferably screwed onto the screw blade as described and only then sintered on the screw blade.
- all the reinforcement elements used are first screwed onto the screw blade and then all the reinforcement elements are sintered together.
- the invention also includes a press screw separator with one of the screws described or with a screw produced by a method described here.
- the Figures 1 to 7 show a screw 1 or details of the screw 1 of a press screw separator 100.
- the press screw separator 100 comprises a housing 101, which in figure 1 is shown partially broken.
- a drive 102 with an electric motor and a gear is flanged to the housing 101 .
- a cylindrical sieve 106 is located in the housing 101.
- the worm 1 extends through the housing 101 and the sieve 106.
- the worm 1 is connected to the drive 102, so that the worm 1 can be rotated.
- An inlet 103 for the pulp is formed in the housing 101 at the beginning of the screw 1 . Radially outside of the screen 106 there is an outlet 105 for the liquid components of the sludge exiting through the screen 106 .
- the worm 1 comprises a core 2 and two worm blades 3 wound around the core 2.
- a discharge regulator 104 is located on the housing 101.
- the core 2 has an area without a worm blade 3, which extends into this discharge regulator 104.
- a plug from the solids in the pulp forms at the discharge regulator 104 .
- the core 2 extends along a longitudinal axis 30 of the worm 1.
- a radial direction 31 is defined perpendicularly to the longitudinal axis 30.
- a circumferential direction 32 is defined around the longitudinal axis 30 .
- the screw blades 3 are wound along the longitudinal axis 30 and in the circumferential direction 32 .
- the pitch of the screw 1 results from the distance between the two screw blades 3, parallel to the longitudinal axis 30.
- the two screw flights 3 each have a reinforced area which is formed by a number of reinforcing elements 4 .
- the Figures 5 to 7 show these three different types of reinforcement elements 4.
- Each of the figures shows a reinforcement element 4 of a screw blade 3 and the other screw blade 3.
- Den Figures 5 to 7 it can be seen that the reinforcement elements 4 each have a U-shaped cross section. This cross section is formed by a front leg 8, a rear leg 9 and an area which connects the two legs 8, 9 to one another.
- Each reinforcement element 4 is manufactured in one piece, for example by casting, sintering or 3D printing.
- the screw blades 3 each comprise a front axial side 5 which faces the discharge regulator 104 , an opposite rear axial side 6 and a radial side 7 .
- the radial side 7 of the screw blades 3 faces radially outwards and thus faces the screen 106 .
- the front leg 8 rests against the front axial side 5 .
- the rear leg 9 rests against the rear axial side 6 .
- the transition area between the two legs 8 , 9 covers the radial side 7 and preferably rests on the radial side 7 .
- the two legs 8, 9 of the U-shape are arranged parallel to one another. There are no undercuts that would hold the respective reinforcement element 4 in a form-fitting manner on the screw blade 3 with respect to the radial direction 31 .
- the reinforcing elements 4 extend over a relatively large length along the wound screw blade 3.
- the angle ⁇ is defined.
- figure 3 shows a schematic view of the screw 1 in a plane perpendicular to the longitudinal axis 30 .
- the individual reinforcement element 4 as a one-piece component, extends over the angle ⁇ .
- the angle ⁇ is 90°.
- Reinforcement element 4 shown designed as a transition element 15, has a tapered section 16. Through this tapered section 16, the reinforcing element 4 merges into the non-reinforced area of the screw blade 3 without an edge.
- Reinforcement element 4 shown designed as a closing element 10, has a stop side 11.
- This stop side 11 covers the end of the screw blade 3.
- the stop side 11 preferably extends from the core 2 to the radial end of the screw blade 3.
- figure 4 shows a sleeve 12 which, as shown in FIG figure 2 , onto which soul 2 is plugged.
- the sleeve 12 has a blocking edge 13 for each of the two screw blades 3 . This blocking edge 13 rests against the closing element 10 .
- the sleeve 12 is firmly connected to the core 2, for example via a press or transition fit. As a result, the sleeve 12 prevents the reinforcement elements 4 from twisting or loosening along the circumferential direction 32 .
- Figures 5 to 7 also show that the front leg 8 has a first leg length 33 on its outside and the rear leg 9 has a second leg length 34 on its outside.
- the two leg lengths 33, 34 are measured parallel to the radial direction 31.
- the first leg length 33 is preferably greater than the second leg length 34.
- the front axial side 5 is primarily reinforced.
- figure 5 shows a third length 35, also parallel to the radial direction 31.
- the first leg length 33 increases up to this third length 35, so that the front leg 8 merges into the stop side 11.
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
- Treatment Of Sludge (AREA)
- Centrifugal Separators (AREA)
- Cyclones (AREA)
- Gears, Cams (AREA)
Description
Die Erfindung betrifft eine Schnecke, die insbesondere in Pressschneckenseparatoren verwendet wird. Die Schnecke weist Verstärkungselemente auf den Schneckenflügeln auf. Des Weiteren betrifft die Erfindung ein Verfahren zum Herstellen der Schnecke. Pressschneckenseparatoren sind beispielsweise in
Die beispielhafte additive Fertigung von Bauteilen aus Metall zeigt
Es ist eine Aufgabe der Erfindung, eine Schnecke mit Verstärkungselementen anzugeben, wobei die Verstärkungselemente einfach herstellbar und sicher auf den Schneckenflügeln montierbar sein sollen.It is an object of the invention to specify a worm with reinforcing elements, it being possible for the reinforcing elements to be manufactured easily and to be mounted securely on the worm blades.
Die Lösung dieser Aufgabe erfolgt durch die Merkmale der unabhängigen Ansprüche 1 und 6. Die abhängigen Ansprüche haben vorteilhafte Ausgestaltungen der Erfindung zum Gegenstand.This object is achieved by the features of the
Somit wird die Erfindung gelöst durch eine Schnecke. Diese Schnecke wird insbesondere in einem Pressschneckenseparator verwendet. Solch ein Pressschneckenseparator ist beispielsweise in
Der Pressschneckenseparator umfasst ein Sieb. In dem Sieb ist die Schnecke angeordnet und wird mittels eines Antriebs in Rotation versetzt. Alternativ hierzu kann auch die Schnecke feststehen und das Sieb in Rotation versetzt werden. Dem Pressschneckenseparator wird eine Trübe, beispielsweise Gülle, kommunale Abwässer oder industrielle Abwässer, zugeführt. Entlang der Schnecke wird die Trübe ausgepresst. Flüssige Bestandteile der Trübe treten durch das Sieb radial nach außen und fließen ab. Am Ende der Schnecke bildet sich ein Pfropfen aus Feststoff. Dieser Pfropfen wird üblicherweise mit einem Ausstoßregler gehalten. Insbesondere der dem Pfropfen zugewandte Bereich und die Radialseite des zumindest einen Schneckenflügels unterliegen einer relativ hohen mechanischen Beanspruchung und entsprechendem Verschleiß.The press screw separator includes a screen. The screw is arranged in the screen and is set in rotation by means of a drive. As an alternative to this, the auger can also be stationary and the screen rotated. A slurry, for example liquid manure, municipal waste water or industrial waste water, is fed into the press screw separator. The pulp is pressed out along the screw. Liquid components of the slurry pass radially outwards through the sieve and flow off. A plug of solid forms at the end of the screw. This slug is usually held with an expulsion regulator. In particular, the area facing the plug and the radial side of the at least one screw blade are subject to relatively high mechanical stress and corresponding wear.
Die erfindungsgemäße Schnecke umfasst eine Seele. Die Seele erstreckt sich entlang einer Längsachse. Senkrecht zur Längsachse ist eine Radialrichtung definiert. Um die Längsachse herum ist eine Umfangsrichtung definiert.The screw according to the invention comprises a core. The soul extends along a longitudinal axis. A radial direction is defined perpendicular to the longitudinal axis. A circumferential direction is defined about the longitudinal axis.
Ferner umfasst die Schnecke zumindest einen Schneckenflügel. Insbesondere können auch zwei oder drei Schneckenflügel auf der Seele angeordnet werden. Der zumindest eine Schneckenflügel ist in Umfangsrichtung und entlang der Längsachse um die Seele gewunden. Der Schneckenflügel kann auch als Schneckenwendel bezeichnet werden.Furthermore, the worm comprises at least one worm blade. In particular, two or three screw blades can also be arranged on the core. The at least one screw blade is wound around the core in the circumferential direction and along the longitudinal axis. The worm blade can also be referred to as a worm helix.
Zur Beschreibung vorliegender Erfindung sind an dem Schneckenflügel folgende Seiten definiert: eine vordere Axialseite weist bezüglich der Förderrichtung der Schnecke nach vorne. Gegenüber der vorderen Axialseite liegt eine hintere Axialseite. Die beiden Axialseiten sind über eine relativ schmale Radialseite miteinander verbunden. Die Radialseite steht im Wesentlichen senkrecht zur Radialrichtung. Bei der Verwendung der Schnecke im Pressschneckenseparator ist die Radialseite dem Sieb zugewandt; die vordere Axialseite ist dem Ausstoßregler zugewandt.For the description of the present invention, the following sides are defined on the screw blade: a front axial side points forward with respect to the conveying direction of the screw. Opposite the front axial side is a rear axial side. The two axial sides are connected to one another via a relatively narrow radial side. The radial side is essentially perpendicular to the radial direction. When using the screw in the press screw separator, the radial side faces the screen; the front axial side faces the exhaust regulator.
Insbesondere die vordere Axialseite und die Radialseite unterliegen der relativ hohen mechanischen Beanspruchung und dem Verschleiß. Deshalb zeigt die Druckschrift
Erfindungsgemäß wird zumindest ein Verstärkungselement, vorzugsweise auf jedem Schneckenflügel mehrere der Verstärkungselemente, verwendet. Der Einfachheit halber wird jeweils die Ausgestaltung eines einzelnen Verstärkungselements beschrieben. Allerdings können ohne weiteres mehrere der Verstärkungselemente hintereinander auf einem Schneckenflügel verwendet werden.According to the invention, at least one reinforcement element is used, preferably several of the reinforcement elements on each screw blade. For the sake of simplicity, the configuration of a single reinforcement element is described in each case. However, several of the reinforcing elements can easily be used one behind the other on a screw blade.
Das einzelne Verstärkungselement weist einen U-förmigen Querschnitt auf. Das Verstärkungselement ist auf die Radialseite des Schneckenflügels aufgebracht, sodass ein vorderer Schenkel der U-Form an der vorderen Axialseite und ein hinterer Schenkel der U-Form an der hinteren Axialseite des Schneckenflügels anliegen; der die beiden Schenkel der U-Form verbindende Anteil des Verstärkungselements überdeckt die Radialseite des Schneckenflügels. Durch diese U-Form ist das Verstärkungselement in beide Richtungen senkrecht zu den Axialseiten des Schneckenflügels formschlüssig befestigt.The single reinforcement member has a U-shaped cross section. The reinforcing member is applied to the radial side of the screw blade so that a front leg of the U-shape abuts the front axial side and a rear leg of the U-shape abuts the rear axial side of the screw blade; the part of the reinforcement element connecting the two legs of the U-shape covers the radial side of the screw blade. Due to this U-shape, the reinforcement element is fastened in a form-fitting manner in both directions perpendicularly to the axial sides of the screw blade.
Die U-Form umfasst grundsätzlich alle Querschnittsformen mit zwei gegenüberliegenden, verbundenen Schenkeln, so beispielsweise auch eine C-Form oder V-Form. Besonders bevorzugt ist jedoch vorgesehen, dass die beiden Schenkel parallel zueinander liegen.The U-shape basically includes all cross-sectional shapes with two opposing, connected legs, such as a C-shape or V-shape. However, it is particularly preferred that the two legs lie parallel to one another.
Besonders bevorzugt ist vorgesehen, dass das Verstärkungselement und der Schneckenflügel so ausgebildet sind, dass das Verstärkungselement auf den Schneckenflügel nur aufdrehbar und nicht in Radialrichtung aufsteckbar ist. Das Aufdrehen des Verstärkungselements erfolgt vom Ende Schneckenflügels entlang der Windung des Schneckenflügels. In dieser Ausgestaltung ist das Verstärkungselement auch bezüglich der Radialrichtung formschlüssig auf dem Schneckenflügel angeordnet.Provision is particularly preferably made for the reinforcing element and the screw blade to be designed in such a way that the reinforcing element can only be screwed onto the screw blade and not pushed in the radial direction. Twisting of the reinforcing element is carried out from the end of the screw blade along the spiral of the screw blade. In this configuration, the reinforcing element is also arranged in a form-fitting manner on the screw blade with respect to the radial direction.
Insbesondere die geometrische Ausgestaltung des Schneckenflügels und/oder die Steigung des Schneckenflügels und/oder die geometrische Ausgestaltung des Verstärkungselements führen dazu, dass das Verstärkungselement lediglich auf den Schneckenflügel aufdrehbar und nicht in Radialrichtung aufsteckbar ist.In particular, the geometric design of the worm blade and/or the pitch of the worm blade and/or the geometric design of the reinforcement element means that the reinforcement element can only be screwed onto the worm blade and not pushed in the radial direction.
Vorzugsweise wird die formschlüssige Verbindung zwischen Verstärkungselement und Schneckenflügel bezüglich der Radialrichtung dadurch erreicht, dass sich das Verstärkungselement über einen relativ großen Winkel α erstreckt. Dieser Winkel α wird um die Längsachse und in einer zur Längsachse senkrechten Ebene gemessen. Erstreckt sich das Verstärkungselement beispielsweise um eine halbe Windung des Schneckenflügels, so beträgt der Winkel α 180 °.The form-fitting connection between the reinforcement element and the screw blade with respect to the radial direction is preferably achieved in that the reinforcement element extends over a relatively large angle α. This angle α is measured about the longitudinal axis and in a plane perpendicular to the longitudinal axis. If the reinforcement element extends, for example, by half a turn of the screw blade, then the angle α is 180°.
Insbesondere ist vorgesehen, dass der Winkel a, über den sich das einzelne Verstärkungselement erstreckt, zumindest 30°, vorzugsweise zumindest 45°, weiter vorzugsweise zumindest 60°, besonders vorzugsweise zumindest 90°, beträgt. Ferner sind auch Ausführungen möglich, bei denen der Winkel α zumindest 120°, vorzugsweise zumindest 150°, beträgt.In particular, it is provided that the angle a, over which the individual reinforcement element extends, is at least 30°, preferably at least 45°, more preferably at least 60°, particularly preferably at least 90°. Furthermore, designs are also possible in which the angle α is at least 120°, preferably at least 150°.
Besonders bevorzugt sind die beiden Schenkel des Verstärkungselements so ausgebildet, dass sie den Schneckenflügel nicht hinterschneiden. Dies wird beispielsweise durch einen Querschnitt erreicht, bei dem die beiden Schenkel parallel zueinander liegen oder durch eine V-Form. Dadurch wird die formschlüssige Verbindung in Radialrichtung lediglich durch den beschriebenen, relativ großen Winkel α und nicht etwa durch eine Hinterschneidung zwischen Verstärkungselement und Schneckenflügel erreicht. So kann der Aufnahmebereich für das Verstärkungselement am Schneckenflügel eine einfache Geometrie mit ebenen Flächen aufweisen.The two legs of the reinforcing element are particularly preferably designed in such a way that they do not undercut the screw blade. This is achieved, for example, by a cross section in which the two legs are parallel to one another or by a V shape. As a result, the positive connection in the radial direction is only achieved by the relatively large angle α described and not by an undercut between the reinforcing element and the screw blade. Thus, the receiving area for the reinforcement element on the screw blade can have a simple geometry with flat surfaces.
Vorzugsweise wird das einzelne Verstärkungselement einteilig gefertigt. Unter "einteiliger Fertigung" ist zu verstehen, dass das Verstärkungselement nicht aus mehreren Bauteilen zusammengesetzt ist. So ist das Verstärkungselement vorzugsweise durch spanende Bearbeitung aus dem Vollen oder durch Urformen gefertigt. Die urformende Fertigung erfolgt vorzugsweise durch Guss, 3D-Druck oder Sintern.The individual reinforcement element is preferably manufactured in one piece. "One-piece production" is to be understood as meaning that the reinforcing element is not composed of several components. Thus, the reinforcing element is preferably manufactured from the solid by machining or by archetypes. The primary forming production is preferably carried out by casting, 3D printing or sintering.
Der "3D-Druck" umfasst alle additiven Herstellungsverfahren, wie beispielsweise Pulverbettverfahren, Freiraumverfahren, Flüssigmetallverfahren oder andere Schichtbauverfahren. Für das Sintern kann der Grünling des Verstärkungselements auf herkömmliche Weise oder ebenfalls mit 3D-Druck hergestellt werden."3D printing" includes all additive manufacturing processes, such as powder bed processes, free space processes, liquid metal processes or other layer construction processes. For sintering, the green part of the reinforcement element can be produced in a conventional manner or also with 3D printing.
Vorzugsweise werden auf dem einzelnen Schneckenflügel drei unterschiedliche Verstärkungselemente angeordnet. Diese Verstärkungselemente weisen im Wesentlichen die gleichen U-förmigen Querschnitte und vorzugsweise den Winkel α auf:
Ein Verstärkungselement ist vorzugsweise als Übergangselement ausgebildet. Dieses Übergangselement wird zuerst auf den Schneckenflügel aufgedreht. Vorzugsweise weist das Übergangselement einen verjüngten Abschnitt auf, sodass der durch die Verstärkungselemente gebildete Bereich des Schneckenflügels ohne eine nennenswerte Kante in den nicht verstärkten Bereich des Schneckenflügels übergeht.Preferably, three different reinforcement elements are arranged on the individual screw flight. These reinforcement elements have substantially the same U-shaped cross-sections and preferably the angle α:
A reinforcement element is preferably designed as a transition element. This transition element is first screwed onto the screw flight. The transition element preferably has a tapered section, so that the area of the screw blade formed by the reinforcement elements merges into the non-reinforced area of the screw blade without an appreciable edge.
Ferner ist ein Verstärkungselement vorzugsweise als Abschlusselement ausgebildet. Dieses Abschlusselement wird zuletzt auf den Schneckenflügel aufgedreht. Das Abschlusselement umfasst vorzugsweise eine Anschlagseite, die am Ende des Schneckenflügels anliegt und in diesem Bereich den Schneckenflügel verstärkt.Furthermore, a reinforcement element is preferably designed as a closing element. This final element is screwed onto the screw blade last. The closing element preferably comprises a stop side which bears against the end of the screw blade and reinforces the screw blade in this area.
Des Weiteren ist zumindest ein Verstärkungselement vorzugsweise als Zwischenelement ausgebildet. Das Zwischenelement befindet sich auf dem Schneckenflügel zwischen dem Übergangselement und dem Abschlusselement. Insbesondere können zwischen Übergangselement und Abschlusselement auch mehrere der Zwischenelemente angeordnet werden.Furthermore, at least one reinforcement element is preferably designed as an intermediate element. The intermediate element is located on the screw flight between the transition element and the final element. In particular, several of the intermediate elements can also be arranged between the transition element and the final element.
Erfindungsgemäß ist auf die Seele der Schnecke eine Hülse aufgeschoben und befestigt. Die Hülse liegt am vordersten Verstärkungselement (Abschlusselement) an und verhindert somit ein Abdrehen bzw. Lösen dieses Verstärkungselements in Umfangsrichtung. Alle weiteren Verstärkungselemente sind durch ihre formschlüssige Anlage an dem jeweils weiter vorne angeordneten Verstärkungselement gegen ein Abdrehen bzw. Lösen in Umfangsrichtung gesichert.According to the invention, a sleeve is pushed onto the core of the worm and fastened. The sleeve rests against the foremost reinforcement element (closing element) and thus prevents this reinforcement element from being twisted off or loosened in the circumferential direction. All other reinforcement elements are secured against twisting off or loosening in the circumferential direction by their form-fitting contact with the reinforcement element arranged further forward.
Das Verstärkungselement wird vorzugsweise aus Hartmetall und/oder Hartkeramik gefertigt. Insbesondere das gesinterte Verstärkungselement besteht aus einem keramischen Hartstoff, wie beispielsweise Wolframcarbit und einer zähen Matrix aus Kobalt und Nickel oder Eisen.The reinforcement element is preferably made of hard metal and/or hard ceramic. In particular, the sintered reinforcement element consists of a ceramic hard material, such as tungsten carbide and a tough matrix of cobalt and nickel or iron.
Die Erfindung umfasst ferner ein Verfahren zum Herstellen einer Schnecke. Die Schnecke ist insbesondere zur Verwendung in einem Pressschneckenseparator ausgebildet. Insbesondere wird mit dem Verfahren die bereits beschriebene Schnecke hergestellt. Bei dem Verfahren erfolgt ein Bereitstellen der Seele, wobei auf der Seele zumindest ein Schneckenflügel angeordnet ist. Auf diesen Schneckenflügel wird zumindest ein Verstärkungselement aufgedreht. Das Verstärkungselement weist den beschriebenen U-förmigen Querschnitt auf. Das Aufdrehen erfolgt entlang der Längsachse und in Umfangsrichtung.The invention also includes a method for manufacturing a screw. The screw is designed in particular for use in a press screw separator. In particular, the screw already described is produced with the method. In the method, the core is provided, with at least one screw blade on the core is arranged. At least one reinforcement element is screwed onto this screw blade. The reinforcement element has the described U-shaped cross section. The untwisting takes place along the longitudinal axis and in the circumferential direction.
Die im Rahmen der erfindungsgemäßen Schnecke vorgestellten vorteilhaften Ausgestaltungen und Unteransprüche finden entsprechend vorteilhafte Anwendung auf das erfindungsgemäße Verfahren.The advantageous configurations and subclaims presented within the scope of the screw according to the invention are correspondingly advantageously applied to the method according to the invention.
Insbesondere ist vorgesehen, dass das zumindest eine Verstärkungselement einteilig, vorzugsweise in einem 3D-Druck, hergestellt wird.In particular, it is provided that the at least one reinforcement element is produced in one piece, preferably in a 3D print.
Bevorzugt wird zunächst ein Grünling des Verstärkungselements hergestellt. Der Grünling wird vorzugsweise in einem 3D-Druck hergestellt. Anschließend wird der Grünling zur Bildung des Verstärkungselements gesintert.A green body of the reinforcement element is preferably produced first. The green compact is preferably produced using 3D printing. Subsequently, the green body is sintered to form the reinforcing member.
Besonders bevorzugt wird der Grünling auf den Schneckenflügel wie beschrieben aufgedreht und erst anschließend auf dem Schneckenflügel gesintert. Insbesondere werden alle verwendeten Verstärkungselemente zunächst auf den Schneckenflügel aufgedreht und anschließend alle Verstärkungselemente gemeinsam gesintert.The green compact is particularly preferably screwed onto the screw blade as described and only then sintered on the screw blade. In particular, all the reinforcement elements used are first screwed onto the screw blade and then all the reinforcement elements are sintered together.
Nach dem Aufbringen der Verstärkungselemente auf den Schneckenflügel ist es möglich, die Verstärkungselemente, beispielsweise spanend, zu bearbeiten.After the reinforcement elements have been applied to the screw blade, it is possible to machine the reinforcement elements, for example by machining.
Die Erfindung umfasst ferner einen Pressschneckenseparator mit einer der beschriebenen Schnecken bzw. mit einer Schnecke, hergestellt nach einem hier beschriebenen Verfahren.The invention also includes a press screw separator with one of the screws described or with a screw produced by a method described here.
Weitere Einzelheiten, Vorteile und Merkmale der vorliegenden Erfindung ergeben sich aus nachfolgender Beschreibung eines Ausführungsbeispiels anhand der Zeichnung. Es zeigt:
Figur 1- eine schematische Ansicht eines Pressschneckenseparators mit erfindungsgemäßer Schnecke gemäß dem Ausführungsbeispiel,
Figur 2- die erfindungsgemäße Schnecke gemäß dem Ausführungsbeispiel,
Figur 3- eine schematische Ansicht der Schnecke aus
Figur 2 in einer zur Längsachse senkrechten Ebene, Figur 4- eine Hülse der Schnecke aus
Figur 2 , - Figur 5
- ein Verstärkungselement der Schnecke aus
Figur 2 , ausgebildet als Abschlusselement, Figur 6- ein Verstärkungselement der Schnecke aus
Figur 2 , ausgebildet als Zwischenelement, und Figur 7- ein Verstärkungselement der Schnecke aus
Figur 2 , ausgebildet als Übergangselement.
- figure 1
- a schematic view of a press screw separator with a screw according to the invention according to the embodiment,
- figure 2
- the screw according to the invention according to the embodiment,
- figure 3
- a schematic view of the snail
figure 2 in a plane perpendicular to the longitudinal axis, - figure 4
- a shell of the snail
figure 2 , - figure 5
- a reinforcement element of the screw
figure 2 , designed as a final element, - figure 6
- a reinforcement element of the screw
figure 2 , formed as an intermediate element, and - figure 7
- a reinforcement element of the screw
figure 2 , designed as a transition element.
Die
Der Pressschneckenseparator 100 gemäß
Am Anfang der Schnecke 1 ist im Gehäuse 101 ein Zulauf 103 für die Trübe ausgebildet. Radial außerhalb des Siebes 106 befindet sich ein Ablauf 105 für die durch das Sieb 106 nach außen tretenden flüssigen Bestandteile der Trübe.An
Die Schnecke 1 umfasst eine Seele 2 und zwei um die Seele 2 gewundene Schneckenflügel 3. Am Gehäuse 101 befindet sich ein Ausstoßregler 104. Die Seele 2 weist einen Bereich ohne Schneckenflügel 3 auf, der sich bis in diesen Ausstoßregler 104 erstreckt. Am Ausstoßregler 104 bildet sich ein Pfropfen aus dem Feststoff der Trübe.The
Anhand der
Gemäß
Die beiden Schneckenflügel 3 weisen jeweils einen verstärkten Bereich auf, der durch mehrere Verstärkungselemente 4 gebildet ist. Auf jedem Schneckenflügel 3 befindet sich ein Verstärkungselement 4 ausgebildet als Abschlusselement 10, ein Verstärkungselement 4 ausgebildet als Übergangselement 15 und mehrere Verstärkungselemente 4, ausgebildet als Zwischenelemente 14.The two
Die
Die Schneckenflügel 3 umfassen jeweils eine vordere Axialseite 5, die dem Ausstoßregler 104 zugewandt ist, eine gegenüberliegende hintere Axialseite 6 und eine Radialseite 7. Die Radialseite 7 der Schneckenflügel 3 ist radial nach außen und somit dem Sieb 106 zugewandt.The
Der vordere Schenkel 8 liegt an der vorderen Axialseite 5 an. Der hintere Schenkel 9 liegt an der hinteren Axialseite 6 an. Der Übergangsbereich zwischen den beiden Schenkeln 8, 9 überdeckt die Radialseite 7 und liegt vorzugsweise auf der Radialseite 7 auf.The
Wie die
Durch die relativ große Ausgestaltung des Winkels α und den U-förmigen Querschnitt der Verstärkungselemente 4, ist es nicht möglich, die Verstärkungselemente 4 von außen, also entlang der Radialrichtung 31, auf den Schneckenflügel 3 aufzustecken. Die Verstärkungselemente 4 werden deshalb in Umfangsrichtung 32 und entlang der Längsachse 30 auf den Schneckenflügel 3 aufgedreht.Due to the relatively large design of the angle α and the U-shaped cross section of the reinforcing
Das in
Das in
Es ist auch vorgesehen, die Hülse 12 einteilig mit dem Abschlusselement 10 zu fertigen.Provision is also made for the
Neben der vorstehenden schriftlichen Beschreibung der Erfindung wird zu deren ergänzender Offenbarung hiermit explizit auf die zeichnerische Darstellung der Erfindung in den Figuren Bezug genommen.In addition to the above written description of the invention, explicit reference is hereby made to the graphic representation of the invention in the figures for its supplementary disclosure.
- 11
- Schneckeslug
- 22
- Seelesoul
- 33
- Schneckenflügelsnail wings
- 44
- Verstärkungselementereinforcement elements
- 55
- vordere Axialseitefront axial side
- 66
- hintere Axialseiterear axial side
- 77
- Radialseiteradial side
- 88th
- vorderer Schenkelfront thigh
- 99
- hinterer Schenkelrear thigh
- 1010
- Abschlusselementfinal element
- 1111
- Anschlagseitestop side
- 1212
- Hülsesleeve
- 1313
- Blockierkanteblocking edge
- 1414
- Zwischenelementintermediate element
- 1515
- Übergangselementtransition element
- 1616
- verjüngter Abschnitttapered section
- 3030
- Längsachselongitudinal axis
- 3131
- Radialrichtungradial direction
- 3232
- Umfangsrichtungcircumferential direction
- 3333
- erste Schenkellängefirst leg length
- 3434
- zweite Schenkellängesecond leg length
- 3535
- dritte Längethird length
- 100100
- Pressschneckenseparatorpress screw separator
- 101101
- Gehäusecasing
- 102102
- Antriebdrive
- 103103
- ZulaufIntake
- 104104
- Ausstoßregleroutput regulator
- 105105
- Ablaufprocedure
- 106106
- SiebSieve
Claims (9)
- A screw (1), in particular of a press screw separator (100), comprising:- a shaft (2) extending along a longitudinal axis (30), wherein a radial direction (31) is defined to be perpendicular to the longitudinal axis (30) and a circumferential direction (32) is defined to be around the longitudinal axis (30),- at least one screw blade (3) arranged on the shaft (2) and screwed in the circumferential direction (32), wherein a front axial side (5), a rear axial side (6) and a radial side (7) are defined on the screw blade (3) with respect to the longitudinal axis (30), and- at least one reinforcing element (4) of a U-shaped cross-section, which is applied to the radial side (7) of the screw blade (3), wherein the two legs (8, 9) of the U-shape abut against the front axial side (5) and the rear axial side (6),characterized in that the screw further comprises:- a sleeve (12) slid onto and fixed to the shaft (2) and abutting against the foremost reinforcing element (4) to block screwing off the at least one reinforcing element (4) in the circumferential direction (32).
- The screw according to claim 1, wherein the reinforcing element (4) and the screw blade (3) are formed in such a way that the reinforcing element (4) on the screw blade (3) can only be screwed on and cannot be plugged on in the radial direction (31).
- The screw according to any one of the preceding claims, wherein the reinforcing element (4) extends over an angle a, which is measured in a plane perpendicular to the longitudinal axis (30), wherein the angle α is at least 30°, preferably at least 45°, further preferably at least 60°, particularly preferably at least 90°.
- The screw according to any one of the preceding claims, wherein the reinforcing element (4) is integrally manufactured.
- The screw according to claim 4, wherein the reinforcing element (4) is manufactured via 3D printing.
- A method of manufacturing a screw (1) according to any one of the preceding claims, comprising the following steps:- Providing a shaft (2) with at least one screw blade (3) arranged on the shaft (2), wherein the shaft (2) extends along a longitudinal axis (30), a radial direction (31) is defined to be perpendicular to the longitudinal axis (30), and a circumferential direction (32) is defined to be around the longitudinal axis (30),- screwing at least one reinforcing element (4) with a U-shaped cross-section onto the screw blade (3), wherein the screwing is carried out along the longitudinal axis (30) and in the circumferential direction (32), and- fixing a sleeve (12) on the shaft (2) of the screw (1).
- The method of manufacturing a screw according to claim 6, wherein the at least one reinforcing element (4) is manufactured integrally via 3D printing.
- The method according to claim 6 or 7, wherein a green body of the reinforcing element (4) is firstly produced, preferably via 3D printing, and subsequently, the green body is sintered to form the reinforcing element.
- The method according to claim 8, wherein the at least one green body is screwed onto the screw blade (3) and subsequently sintered onto the screw blade (3).
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PL18181313T PL3427937T3 (en) | 2017-07-13 | 2018-07-03 | Conical worm of a conical worm separator |
SI201830598T SI3427937T1 (en) | 2017-07-13 | 2018-07-03 | Conical worm of a conical worm separator |
HRP20220394TT HRP20220394T1 (en) | 2017-07-13 | 2018-07-03 | Conical worm of a conical worm separator |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102017212008.8A DE102017212008A1 (en) | 2017-07-13 | 2017-07-13 | Screw of a screw extruder |
Publications (2)
Publication Number | Publication Date |
---|---|
EP3427937A1 EP3427937A1 (en) | 2019-01-16 |
EP3427937B1 true EP3427937B1 (en) | 2022-01-12 |
Family
ID=62846005
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP18181313.0A Active EP3427937B1 (en) | 2017-07-13 | 2018-07-03 | Conical worm of a conical worm separator |
Country Status (9)
Country | Link |
---|---|
EP (1) | EP3427937B1 (en) |
DE (1) | DE102017212008A1 (en) |
DK (1) | DK3427937T3 (en) |
ES (1) | ES2908959T3 (en) |
HR (1) | HRP20220394T1 (en) |
HU (1) | HUE058222T2 (en) |
PL (1) | PL3427937T3 (en) |
PT (1) | PT3427937T (en) |
SI (1) | SI3427937T1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP4227024A1 (en) * | 2022-02-10 | 2023-08-16 | Vogelsang GmbH & Co. KG | Screw conveyor for screw separator and production method for screw conveyor |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP6917102B1 (en) * | 2021-04-30 | 2021-08-11 | 株式会社アクアトリム | Dehydrator |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2289411A1 (en) * | 1974-10-30 | 1976-05-28 | Egretier M | Archimedean screw apparatus esp. for processing grapes - having PTFE cover extending over part of windings of screw |
DE3006101A1 (en) * | 1980-02-19 | 1981-08-27 | Metallgesellschaft Ag, 6000 Frankfurt | WORKPIECES WITH ARMORED EDGES AND / OR AREAS |
DE3140364C2 (en) * | 1981-10-10 | 1983-09-15 | Siebtechnik GmbH, 4330 Mülheim | Conveyor screw, especially for solid bowl centrifuges |
DE3907817A1 (en) * | 1989-03-10 | 1990-09-13 | Heinz Kasten | Apparatus and process for dewatering liquid manure (slurry) and sewage sludge |
DE4214217A1 (en) | 1992-04-30 | 1993-11-04 | Fan Engineering Gmbh | Wearing elements attachment device to liq.-solid screw press separator screws - comprises wearing elements in form of angles shaped to suit and attached to screw vanes and tapering to screw axis, for waste paper residue and cattle slurry |
JPH10128156A (en) * | 1996-11-05 | 1998-05-19 | Nippei Toyama Corp | Screw conveyor type centrifugal separator |
DE202012008077U1 (en) | 2012-08-23 | 2012-09-17 | Röhren- und Pumpenwerk Bauer Gesellschaft m.b.H. | Press screw separator for separating solids from a solid-liquid mixture |
DE202012011864U1 (en) | 2012-12-11 | 2013-01-14 | Röhren- und Pumpenwerk Bauer GmbH | screw extractor |
CN105458256A (en) * | 2015-12-07 | 2016-04-06 | 株洲西迪硬质合金科技股份有限公司 | Metal-based composite material and material additive manufacturing method thereof |
-
2017
- 2017-07-13 DE DE102017212008.8A patent/DE102017212008A1/en not_active Ceased
-
2018
- 2018-07-03 DK DK18181313.0T patent/DK3427937T3/en active
- 2018-07-03 HU HUE18181313A patent/HUE058222T2/en unknown
- 2018-07-03 PT PT181813130T patent/PT3427937T/en unknown
- 2018-07-03 ES ES18181313T patent/ES2908959T3/en active Active
- 2018-07-03 SI SI201830598T patent/SI3427937T1/en unknown
- 2018-07-03 PL PL18181313T patent/PL3427937T3/en unknown
- 2018-07-03 HR HRP20220394TT patent/HRP20220394T1/en unknown
- 2018-07-03 EP EP18181313.0A patent/EP3427937B1/en active Active
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP4227024A1 (en) * | 2022-02-10 | 2023-08-16 | Vogelsang GmbH & Co. KG | Screw conveyor for screw separator and production method for screw conveyor |
Also Published As
Publication number | Publication date |
---|---|
SI3427937T1 (en) | 2022-05-31 |
DE102017212008A1 (en) | 2019-01-17 |
ES2908959T3 (en) | 2022-05-04 |
HRP20220394T1 (en) | 2022-05-27 |
HUE058222T2 (en) | 2022-07-28 |
PT3427937T (en) | 2022-03-15 |
PL3427937T3 (en) | 2022-05-09 |
DK3427937T3 (en) | 2022-03-28 |
EP3427937A1 (en) | 2019-01-16 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
EP1502008B1 (en) | Device for fixing a rotor on a shaft | |
EP3189235B1 (en) | Progressive cavity pump | |
EP2143953B1 (en) | Pump power unit | |
EP2256345A2 (en) | Stator for an eccentric screw pump or an eccentric screw motor and method for producing a stator | |
EP3427937B1 (en) | Conical worm of a conical worm separator | |
DE202010012454U1 (en) | Auger | |
AT518983A4 (en) | DEVICE FOR WASHING DEEP-WATERED OR FLUIDABLE SUPPLY MATERIAL | |
DE102014105917A1 (en) | Eccentric shaft for a compaction machine | |
DE202016103999U1 (en) | Insert for connecting an electrical connection to a wall | |
DE102015217547A1 (en) | Brake booster for a motor vehicle | |
DE102014111724B4 (en) | Matrix module set for press tools for making screws | |
DE102011075611A1 (en) | Actuator for motor vehicle lock, particularly motor vehicle door lock, comprises Bowden cable, which has core with connecting piece, which is connected with auxiliary component, particularly spindle by screw connection with thread | |
DE102008046603A1 (en) | Lackschabmutter | |
EP2762299A1 (en) | Drainage press | |
DE202012011864U1 (en) | screw extractor | |
EP1806482A2 (en) | Camshaft | |
DE102017116255A1 (en) | Threaded nut for a ball screw drive | |
EP3094479B1 (en) | Screw press for a screw press separator | |
EP3105045B1 (en) | Screw press separator | |
DE102015209641A1 (en) | Screw connection and rotor for an exhaust gas turbocharger | |
EP3122435B1 (en) | Polymer filter support with metal sleeve | |
DE102013000561B3 (en) | Press screw separator and sieve arrangement | |
EP3458213B1 (en) | Method for the powder-metallurgical production of a rod-like body | |
DE102017207951A1 (en) | Method for producing a gear | |
DE102017100540A1 (en) | Cavity Pump |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
REG | Reference to a national code |
Ref country code: HR Ref legal event code: TUEP Ref document number: P20220394T Country of ref document: HR |
|
PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION HAS BEEN PUBLISHED |
|
AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR |
|
AX | Request for extension of the european patent |
Extension state: BA ME |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: REQUEST FOR EXAMINATION WAS MADE |
|
17P | Request for examination filed |
Effective date: 20190412 |
|
RBV | Designated contracting states (corrected) |
Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR |
|
GRAP | Despatch of communication of intention to grant a patent |
Free format text: ORIGINAL CODE: EPIDOSNIGR1 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: GRANT OF PATENT IS INTENDED |
|
INTG | Intention to grant announced |
Effective date: 20210729 |
|
GRAS | Grant fee paid |
Free format text: ORIGINAL CODE: EPIDOSNIGR3 |
|
GRAA | (expected) grant |
Free format text: ORIGINAL CODE: 0009210 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE PATENT HAS BEEN GRANTED |
|
AK | Designated contracting states |
Kind code of ref document: B1 Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR |
|
REG | Reference to a national code |
Ref country code: GB Ref legal event code: FG4D Free format text: NOT ENGLISH |
|
REG | Reference to a national code |
Ref country code: CH Ref legal event code: EP |
|
REG | Reference to a national code |
Ref country code: DE Ref legal event code: R096 Ref document number: 502018008488 Country of ref document: DE |
|
REG | Reference to a national code |
Ref country code: IE Ref legal event code: FG4D Free format text: LANGUAGE OF EP DOCUMENT: GERMAN |
|
REG | Reference to a national code |
Ref country code: AT Ref legal event code: REF Ref document number: 1462093 Country of ref document: AT Kind code of ref document: T Effective date: 20220215 |
|
REG | Reference to a national code |
Ref country code: PT Ref legal event code: SC4A Ref document number: 3427937 Country of ref document: PT Date of ref document: 20220315 Kind code of ref document: T Free format text: AVAILABILITY OF NATIONAL TRANSLATION Effective date: 20220308 |
|
REG | Reference to a national code |
Ref country code: RO Ref legal event code: EPE Ref country code: FI Ref legal event code: FGE |
|
REG | Reference to a national code |
Ref country code: DK Ref legal event code: T3 Effective date: 20220321 |
|
REG | Reference to a national code |
Ref country code: NL Ref legal event code: FP |
|
REG | Reference to a national code |
Ref country code: SE Ref legal event code: TRGR |
|
REG | Reference to a national code |
Ref country code: ES Ref legal event code: FG2A Ref document number: 2908959 Country of ref document: ES Kind code of ref document: T3 Effective date: 20220504 |
|
REG | Reference to a national code |
Ref country code: LT Ref legal event code: MG9D |
|
REG | Reference to a national code |
Ref country code: HR Ref legal event code: T1PR Ref document number: P20220394 Country of ref document: HR |
|
REG | Reference to a national code |
Ref country code: NO Ref legal event code: T2 Effective date: 20220112 |
|
REG | Reference to a national code |
Ref country code: HU Ref legal event code: AG4A Ref document number: E058222 Country of ref document: HU |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: RS Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20220112 Ref country code: LT Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20220112 |
|
REG | Reference to a national code |
Ref country code: HR Ref legal event code: ODRP Ref document number: P20220394 Country of ref document: HR Payment date: 20220621 Year of fee payment: 5 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: LV Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20220112 Ref country code: GR Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20220413 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: IS Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20220512 |
|
REG | Reference to a national code |
Ref country code: DE Ref legal event code: R097 Ref document number: 502018008488 Country of ref document: DE |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: SM Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20220112 Ref country code: SK Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20220112 Ref country code: EE Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20220112 |
|
PLBE | No opposition filed within time limit |
Free format text: ORIGINAL CODE: 0009261 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: AL Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20220112 |
|
26N | No opposition filed |
Effective date: 20221013 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: MC Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20220112 |
|
REG | Reference to a national code |
Ref country code: CH Ref legal event code: PL |
|
GBPC | Gb: european patent ceased through non-payment of renewal fee |
Effective date: 20220703 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: LU Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20220703 Ref country code: LI Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20220731 Ref country code: CH Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20220731 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: GB Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20220703 |
|
REG | Reference to a national code |
Ref country code: HR Ref legal event code: ODRP Ref document number: P20220394 Country of ref document: HR Payment date: 20230620 Year of fee payment: 6 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: IE Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20220703 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: RO Payment date: 20230626 Year of fee payment: 6 Ref country code: PT Payment date: 20230621 Year of fee payment: 6 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: PL Payment date: 20230622 Year of fee payment: 6 Ref country code: NL Payment date: 20230720 Year of fee payment: 6 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: NO Payment date: 20230720 Year of fee payment: 6 Ref country code: IT Payment date: 20230731 Year of fee payment: 6 Ref country code: FI Payment date: 20230719 Year of fee payment: 6 Ref country code: ES Payment date: 20230821 Year of fee payment: 6 Ref country code: BG Payment date: 20230719 Year of fee payment: 6 Ref country code: AT Payment date: 20230718 Year of fee payment: 6 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: SI Payment date: 20230621 Year of fee payment: 6 Ref country code: SE Payment date: 20230724 Year of fee payment: 6 Ref country code: HU Payment date: 20230704 Year of fee payment: 6 Ref country code: FR Payment date: 20230724 Year of fee payment: 6 Ref country code: DK Payment date: 20230724 Year of fee payment: 6 Ref country code: DE Payment date: 20230725 Year of fee payment: 6 Ref country code: BE Payment date: 20230719 Year of fee payment: 6 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: MK Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20220112 Ref country code: CY Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20220112 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: HR Payment date: 20240628 Year of fee payment: 7 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: CZ Payment date: 20240621 Year of fee payment: 7 |