EP0358790A1 - Milling system - Google Patents

Milling system Download PDF

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Publication number
EP0358790A1
EP0358790A1 EP88114990A EP88114990A EP0358790A1 EP 0358790 A1 EP0358790 A1 EP 0358790A1 EP 88114990 A EP88114990 A EP 88114990A EP 88114990 A EP88114990 A EP 88114990A EP 0358790 A1 EP0358790 A1 EP 0358790A1
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EP
European Patent Office
Prior art keywords
grinding
shaft
grinding device
housing
thrust
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.)
Granted
Application number
EP88114990A
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German (de)
French (fr)
Other versions
EP0358790B1 (en
Inventor
Lu Tsai-Chuan
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Chung Yeh Machinery & Hardware Corp
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Chung Yeh Machinery & Hardware Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Chung Yeh Machinery & Hardware Corp filed Critical Chung Yeh Machinery & Hardware Corp
Priority to ES198888114990T priority Critical patent/ES2034080T3/en
Priority to AT88114990T priority patent/ATE79054T1/en
Priority to EP88114990A priority patent/EP0358790B1/en
Priority to DE8888114990T priority patent/DE3873538D1/en
Publication of EP0358790A1 publication Critical patent/EP0358790A1/en
Application granted granted Critical
Publication of EP0358790B1 publication Critical patent/EP0358790B1/en
Priority to GR920402468T priority patent/GR3006190T3/el
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C15/00—Disintegrating by milling members in the form of rollers or balls co-operating with rings or discs
    • B02C15/08—Mills with balls or rollers centrifugally forced against the inner surface of a ring, the balls or rollers of which are driven by a centrally arranged member
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C15/00—Disintegrating by milling members in the form of rollers or balls co-operating with rings or discs
    • B02C15/16—Disintegrating by milling members in the form of rollers or balls co-operating with rings or discs with milling members essentially having different peripheral speeds and in the form of a hollow cylinder or cone and an internal roller or cone
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C17/00—Disintegrating by tumbling mills, i.e. mills having a container charged with the material to be disintegrated with or without special disintegrating members such as pebbles or balls
    • B02C17/16—Mills in which a fixed container houses stirring means tumbling the charge
    • B02C17/166—Mills in which a fixed container houses stirring means tumbling the charge of the annular gap type

Definitions

  • the invention relates to a grinding device for the fine grinding of flowable material, in particular for the production of color pigment dispersion, with a lying housing, from which the material is fed on one end by means of a conveying device and removed at the other end, with a rotating shaft which is arranged concentrically in the housing and with at least one in the provided between the housing and shaft formed annular channel, driven by the shaft with the same number of revolutions and interacting with the housing inner wall or the shaft surface.
  • Such grinding devices are used to produce a homogeneous and uniform dispersion from various paints, oils, resins, pigments, additives and other components, which as a raw product consist of a relatively viscous and non-uniform dispersion with relatively large solid particles.
  • Such a grinding device is known from DT-P 21 38025. However, it could not meet all requirements. A particular disadvantage was that the grinding pressure cannot be adjusted. Hard floating particles in the raw product therefore remain in the spaces between two successive rollers and run around the shaft with the rollers. The result is not only a poor grinding effect, but also damage to the surface of the shaft and the inner wall of the housing.
  • the instantaneous grinding surface after the arrangement of the rollers is relatively small, and accordingly the grinding capacity, as a result of which the time and power consumption of the grinding device are relatively high.
  • the non-adjustability of the gap width between the rollers, the shaft and the inner wall of the housing limits the degree of fineness of the ground product and the number of types of substances to be ground.
  • Very hard and large floating particles can stop the shaft when the motor is tightened and subject the shaft to elastic deformation if the hard floating particles get stuck in the gap between the rollers and the inner wall of the housing. If the grinding device has already been supplied with hard and large floating particles and these have not yet been removed elsewhere, the shaft and the roller are easily deformed and therefore forced to stop because the shaft is relatively long and the hard floating particles in the gaps between the rollers and can get stuck inside the housing.
  • either the housing halves or the housing and a cover are axially displaceable relative to one another, a pressure bearing being provided, for example, between the cover and the adjacent cage of the rollers to reduce the frictional resistance.
  • This known grinding device is therefore relatively complicated and therefore expensive. It requires additional devices that are difficult to handle in order to be able to adjust the gap width by moving the parts relative to one another.
  • the object of the present invention is therefore to improve the grinding device of the type mentioned in such a way that the setting of differently sized gaps between the rollers, the shaft and the inner wall of the housing can be carried out simply and functionally reliably and the device required for this is simple and cheap to manufacture is.
  • rollers, the corresponding shaft part and the housing bore are conical, the shaft is axially displaceable relative to the rollers and the thrust required for the displacement is exerted via a shaft part which is axially formed in the conical with the rollers corresponding shaft part opens.
  • the shaft of the grinding device is hollow and a coolant circulates through the cavity.
  • a grinding device 10 consists essentially of the substructure 11 with a motor, hydraulic device ect., The bearing stand 12, the grinding unit 13, the feed pump 14, the grinding product inlet 15 and the grinding product outlet 16, the coolant inlet 17 and the coolant outlet 18 for the external cooling system and the Coolant inlet 19 and the coolant outlet 20 for the internal cooling system.
  • a bearing stand 12 stands on the substructure 11.
  • a shaft 27 runs through the bearing stand 12 and is supported by two roller bearings 28, 29. At the left end of the shaft 27 there is a grinding element 42.
  • a pulley 26 is attached to the right side of the shaft 27.
  • a motor 22 is installed in the substructure 11, the axis of rotation 23 of which is provided with a pulley 24. On this pulley 24 and the pulley 26 of the shaft 27 some belts 25 are stretched. The driving force of the motor 22 is transmitted to the shaft 27 through the pulley 24, the belts 25 and the pulley 26 to drive the shaft 27.
  • the storage stand 12 there is a cooling jacket 30 which is placed around the bearings 28, 29. With the help of the coolant coming through the coolant inlet 31, the high heat that is generated by the rotation in the two roller bearings 28, 29 is cooled. In order to avoid transfer of the high heat to the left grinding unit 13, the coolant can be removed through the coolant outlet 32 at the bottom of the jacket 30. If you want to increase the cooling effect, you can let the coolant flow continuously.
  • a spacer sleeve 33 is located on the left side of the bearing stand 12.
  • a grinding unit 13 is located to the left of the spacer sleeve 33.
  • a spacer chamber 34 is provided in the spacer sleeve 33, through which the roller bearing 29 is separated from the grinding unit 13.
  • the spacing chamber 34 To the left of the spacing chamber 34 is also a set of oil seal 38 and clamping ring 39 to seal the gap between the cover 35 and the shaft 27, so that the spacing Chamber 34 penetrated lubricating oil can not penetrate the grinding unit 13. In this way, a double separation is carried out between the roller bearing 29 and the grinding unit 13 and the ground product in the grinding unit 13 is effectively protected against contamination. If the oil seal 36 on the right of the spacing chamber 34 fails, the lubricating oil that has entered the spacing chamber 34 can run out through the oil drain 41 at the bottom of the spacing chamber 34 without difficulty. It does not remain in the spacing chamber 34. Therefore, the lubricating oil that has penetrated cannot reach the height of the oil seal 38.
  • the oil seal 38 also has the same separation function.
  • the grinding unit 13 is provided with a right cover 35 which is attached to the left side of the right spacer sleeve 33.
  • the 1st grinding element 42 is attached to the left side of the right cover 35, the left cover 43 to the left side of the 1st grinding element 42.
  • the right cover 35, the 1st grinding element 42 and the left cover 43 together form a uniform grinding space (42 a).
  • the second grinding element 44 is fastened to the left side of the shaft 27 and inserted into the grinding chamber (42 a) described above.
  • Some 3rd grinding elements 52 are located in the grinding chamber between the 1st grinding element 42 and the 2nd grinding element 44.
  • the 1st milling element 42 has an inner wall of the 1st inner truncated cone 46.
  • This inner taper wall 46 has the 1st geometric center 47, i.e. the central axis of the inner truncated cone 46, the first virtual inner cone tip 48 and the first inner cone angle.
  • the second grinding element 44 has an outer wall 49 of the second outer truncated cone.
  • This outer wall 49 has the 2nd geometric center 50, the central axis of the outer cone, the 2nd virtual one Outer cone tip 51 and the second outer cone angle.
  • the 2nd geometric center 50 of the 2nd grinding element 44 mentioned and the 1st geometric center 47 of the 1st grinding element 42 mentioned coincide approximately, that is to say the 1st grinding element 42 and the 2nd grinding element 44 have the same center.
  • the 2nd virtual cone tip 51 of the 2nd grinding element 44 and the 1st virtual cone tip 48 of the 1st grinding element 42 coincide approximately.
  • the 3rd grinding elements 52 are located in the grinding chamber between the 1st grinding element 42 and the 2nd grinding element 44.
  • the 3rd virtual outer cone tips 55 of the 3rd grinding elements 52 and the 1st virtual inner cone tip 48 of the 1st grinding element 42 and the 2nd virtual one Outer cone tip 51 of the second grinding element 44 coincide approximately. Therefore, the second grinding element 44 is located between the two other elements 42, 52 and comes into contact with them.
  • the grinding product inlet 15, which is connected to the grinding chamber, is located at the top left of the grinding unit 13. At the bottom right of the grinding unit 13 is the grinding product outlet 16, which is also connected to the grinding chamber in order to discharge the finished grinding product.
  • the 1st grinding element 42 rotates, but the 2nd grinding element 44 does not, so the 3rd geometric centers 54 of the 3rd grinding elements 52 rotate about the 1st geometric center 47 and at the same time the 3rd grinding elements 52 also rotate about their center 3. Geometric centers 54.
  • the 3rd geometric centers 54 of the 3rd grinding elements 52 do not move, but the 3rd grinding elements 52 can rotate freely about their 3rd geometric centers 54, then the 1st grinding element 42 and the 2nd grinding element 44 will turn around them own geometric centers, that is, rotate around the first geometric center 47 and the second geometric center 50.
  • the components can rotate against each other due to mutual friction.
  • a positive drive with gears can also be used to prevent sliding between the three grinding elements. If you set different suitable gear ratios, the linear speeds at the points of contact of the three grinding elements are different. Then the sliding friction can also be used for grinding.
  • Our practical example relates to the fact that the second grinding element 44 rotates, but the first grinding element 42 remains motionless. We do not use the positive drive with gears for explanation, but use the rolling friction.
  • the shaft 27 rotates and with it the second grinding element 44.
  • the first grinding element 42 does not run, therefore the third grinding elements 52 become between the second grinding element 44 and the third grinding elements with the aid of the frictional force 52 and rotated about the 1st geometric center by the frictional action between the 2nd grinding element 44 and the 1st grinding element 42.
  • the third milling elements 52 also rotate themselves around their own third geometric centers 54.
  • the milling product that has entered the milling chamber is broken by rolling and ground by the friction of two third milling elements 52 lying next to one another.
  • the grinding surface is large and the grinding force can be applied to the second grinding element 44 in accordance with the axial thrust can be set. The harder the ground product, the more the thrust can be increased. The thrust is reduced for softer ground products. Therefore, the grinding performance is good.
  • the grinding pressure control 56 includes the following parts: a thrust plate 58, which is screwed onto the shaft 27 with a thread 57 and is screwed by a screw 59 to the right side of the pulley 26, and a thrust sleeve 60, which the shaft 27 envelops. Its left end presses the right side of the plate 58. In between there is a bearing 61.
  • a support device 62 stands on the substructure 11. In this support device 62 there is a cylinder 63 in which a piston 64 and a spring 65 are located. The piston is attached to the thrust sleeve 60.
  • a hydraulic line 66 leads the hydraulic oil from the hydraulic control 67 in the substructure 11 into the cylinder 63 in order to drive the piston 64 so that the thrust sleeve 60 can exert pressure on the pulley 2. Then the shaft 27 is pushed by the thrust plate 58 by the screw 57 and the second grinding element 44 at the left end of the shaft 27 is pressed to the left. The strength of the pressure depends on the pressure in the cylinder 63 on the right side. If no more pressure is exerted, the thrust effect is canceled by the counter spring 65.
  • a bearing 68 which is sealed with a cover 69.
  • the second grinding element 44 In order to be able to cool the second grinding element 44, it is made hollow.
  • the entire shaft 27 is hollow.
  • the coolant can pass from the coolant inlet 19 through the inner opening 70 of the shaft 27 to the inner opening 71 of the second grinding element 44, and then flow out of the coolant outlet 20. Then it runs continuously in a circle. The heat generated during grinding is thus dissipated.
  • the first grinding element 42 is provided from the outside with a spiral cooling channel 72.
  • the coolant can run through the coolant inlet 17 into the cooling channel 72 and run out of the coolant outlet 18. It is again a cycle. The heat generated during grinding is thus dissipated.

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  • Engineering & Computer Science (AREA)
  • Food Science & Technology (AREA)
  • Crushing And Grinding (AREA)
  • Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)

Abstract

The milling system serves for fine milling free-flowing material, in particular for producing colour pigment dispersion, has a horizontally lying housing, to one end of which the material is fed by means of a conveying device and at the other end of which it is removed. In its housing, a circumferentially driven shaft is arranged concentrically. At least one milling roller is provided in the annular channel constructed between the housing and shaft, which milling roller is driven by the shaft at the same speed of rotation and cooperates with the housing inner wall or the shaft surface. The rollers (52), the shaft part (44) corresponding thereto and the milling space (42a) are of conical construction. The shaft (27) is axially displaceable in relation to the rollers (52), and the thrust required for displacement is exerted by means of a shaft part (27a) which leads axially into the conically constructed shaft part (44) which corresponds to the rollers. <IMAGE>

Description

Die Erfindung betrifft eine Mahlvorrichtung zum Feinvermahlen fließfähigen Materials, insbesondere zum Herstellen von Farbpigmentdispersion, mit einem liegenden Gehäuse, dem einerends das Material mittels einer Fördereinrichtung zugeführt und andernends entnommen wird, mit einer im Gehäuse konzentrisch angeordneten, umlaufend angetriebenen Welle und mit mindestens einer in dem zwischen Gehäuse und Welle ausgebildeten Ringkanal vorgesehenen, von der Welle mit gleicher Umlaufzahl angetriebenen und mit der Gehäuseinnenwand bzw. der Wellenoberfläche zusammenwirkenden Mahlwalze.The invention relates to a grinding device for the fine grinding of flowable material, in particular for the production of color pigment dispersion, with a lying housing, from which the material is fed on one end by means of a conveying device and removed at the other end, with a rotating shaft which is arranged concentrically in the housing and with at least one in the provided between the housing and shaft formed annular channel, driven by the shaft with the same number of revolutions and interacting with the housing inner wall or the shaft surface.

Derartige Mahlvorrichtungen dienen zur Herstellung einer homogenen und gleichmäßigen Dispersion aus verschiedenen Lacken, Ölen, Harzen, Pigmenten, Zusatzstoffen und anderen Komponenten, welche als Rohprodukt aus einer verhältnismäßig viskosen und ungleichförmigen Suspersion mit relativ großen Feststoffteilchen bestehen.Such grinding devices are used to produce a homogeneous and uniform dispersion from various paints, oils, resins, pigments, additives and other components, which as a raw product consist of a relatively viscous and non-uniform dispersion with relatively large solid particles.

Eine derartige Mahlvorrichtung ist aus der DT-P 21 38025 bekannt. Sie konnte jedoch nicht allen Ansprüchen genügen. Nachteilig war insbesondere, daß der Mahldruck nicht eingestellt werden kann. Harte Schwebeteilchen in dem Rohprodukt bleiben daher in den Zwischenräumen zwischen zwei aufeinanderfolgenden Walzen und laufen mit den Walzen um die Welle. Die Folge ist nicht nur ein schlechter Mahleffekt, sondern auch die Schädigung der Oberfläche von Welle und Gehäuseinnenwand.Such a grinding device is known from DT-P 21 38025. However, it could not meet all requirements. A particular disadvantage was that the grinding pressure cannot be adjusted. Hard floating particles in the raw product therefore remain in the spaces between two successive rollers and run around the shaft with the rollers. The result is not only a poor grinding effect, but also damage to the surface of the shaft and the inner wall of the housing.

Wenn die Welle dieser Mahlvorrichtung mit sehr hoher Drehzahl angetrieben wird, können die Walzen an der Gehäuseinnenwand nur gleiten und nicht rollen, weswegen der Mahleffekt ebenfalls schlechter wird.If the shaft of this grinding device is driven at a very high speed, the rollers on the inner wall of the housing can only slide and not roll, which is why the grinding effect is also worse.

Außerdem ist die Momentanmahlfläche nach Anordnung der Walzen verhältnismäßig klein, dementsprechend auch die Mahlleistung, wodurch Zeitaufwand und Leistungsverbrauch der Mahlvorrichtung relativ hoch sind.In addition, the instantaneous grinding surface after the arrangement of the rollers is relatively small, and accordingly the grinding capacity, as a result of which the time and power consumption of the grinding device are relatively high.

Die Nichtverstellbarkeit der Spaltbreite zwischen den Walzen, der Welle und der Gehäuseinnenwand begrenzt den Grad der Feinheit des Mahlprodukts und die Anzahl der Sorten der zu mahlenden Stoffe.The non-adjustability of the gap width between the rollers, the shaft and the inner wall of the housing limits the degree of fineness of the ground product and the number of types of substances to be ground.

Sehr harte und große Schwebeteilchen können die Welle beim Anziehen des Motors stoppen und die Welle elastischen Deformationen aussetzen, wenn die harten Schwebeteilchen in der Spalte zwischen Walzen und Gehäuseinnenwand stecken­bleiben. Wenn der Mahlvorrichtung bereits harte und große Schwebeteilchen zugeführt und diese noch nicht andernends entnommen worden sind, werden die Welle und die Walze auch deshalb leicht zu Deformationen geführt und dadurch erzwungen gestoppt, weil die Welle verhältnismäßig lang ist und die harten Schwebeteilchen in den Spalten zwischen Walzen und Gehäuseinnenwand steckenbleiben können.Very hard and large floating particles can stop the shaft when the motor is tightened and subject the shaft to elastic deformation if the hard floating particles get stuck in the gap between the rollers and the inner wall of the housing. If the grinding device has already been supplied with hard and large floating particles and these have not yet been removed elsewhere, the shaft and the roller are easily deformed and therefore forced to stop because the shaft is relatively long and the hard floating particles in the gaps between the rollers and can get stuck inside the housing.

Wegen des Verschleißes nach längerem Betrieb werden die Durchmesser der Walzen und der Welle ständig kleiner. Die Spaltbreiten zwischen den Walzen, der Welle und der Gehäuseinnenwand vergrößern sich dadurch, gleichzeitig verringern sich die Mahl- und Scherwirkung der Mahlvorrichtung.Due to wear after prolonged operation, the diameters of the rollers and the shaft are constantly becoming smaller. This increases the gap widths between the rollers, the shaft and the inner wall of the housing, while at the same time reducing the grinding and shearing action of the grinding device.

Diese Nachteile können mit dem Vorsehen einer Möglichkeit zur Einstellung unterschiedlich großer Spalte zwischen den Walzen, der Welle sowie der Gehäuseinnenwand behoben werden. Eine derartige Mahlvorrichtung ist aus dem DT-Gbm 18 78688 bekannt. Beim Drehen der Welle dieser Mahlvorrichtung werden entweder zylindrische Walzen durch die Fliekraft an die Gehäuseinnenwand gedrückt, auf welcher sie dann abrollen, oder konische Walzen werden nach dem Reibradprinzip durch eine entsprechend ausgebildete Welle angetrieben. Hierbei wird mit der erstbeschriebenen Ausführungsform das zugeführte Mahlgut zwischen der Gehäuseinnenwand und den sich an dieser abrollenden Walzen zermahlen, während bei der anderen Ausführungsform die Mahl- und Scherwirkung durch den Spalt zwischen den Walzen, der Gehäuseinnenwand und der Welle bestimmt wird. Zur Einstellung unterschiedlich großer Spalte zwischen den Walzen, der Welle sowie der Gehäuseinnenwand sind entweder die Gehäusehälften oder das Gehäuse und ein Deckel gegen­einander axial verschiebbar angebracht, wobei zur Verminderung der Reibungswiderstände beispielsweise zwischen dem Deckel und dem benachbarten Käfig der Walzen ein Drucklager vorgesehen ist.These disadvantages can be remedied by providing a possibility for setting gaps of different sizes between the rollers, the shaft and the inner wall of the housing. Such a grinding device is known from DT-Gbm 18 78688. When rotating the shaft of this grinding device, either cylindrical rollers are pressed by the centrifugal force against the inner wall of the housing, on which they then unroll, or conical rollers are driven according to the friction wheel principle by an appropriately trained shaft. Here, with the first described embodiment, the material to be ground is ground between the inner wall of the housing and the rollers rolling on it, while in the other embodiment the grinding and shearing action is determined by the gap between the rollers, the inner wall of the housing and the shaft. To adjust gaps of different sizes between the rollers, the shaft and the inner wall of the housing, either the housing halves or the housing and a cover are axially displaceable relative to one another, a pressure bearing being provided, for example, between the cover and the adjacent cage of the rollers to reduce the frictional resistance.

Diese bekannte Mahlvorrichtung ist somit verhältnismäßig kompliziert und dadurch teuer. Sie benötigt schwierig zu handhabende zusätzliche Einrichtungen, um die Spaltbreite durch Verschieben der Teile relativ zueinander einstellen zu können.This known grinding device is therefore relatively complicated and therefore expensive. It requires additional devices that are difficult to handle in order to be able to adjust the gap width by moving the parts relative to one another.

Aufgabe der vorliegenden Erfindung ist es daher, die Mahlvorrichtung der eingangs genannten Art so zu verbessern, daß die Einstellung unterschiedlich großer Spalten zwischen den Walzen, der Welle sowie der Gehäuseinnenwand einfach und funktionssicher vorgenommen werden kann und die dafür erforderliche Einrichtung einfach und billig in der Herstellung ist.The object of the present invention is therefore to improve the grinding device of the type mentioned in such a way that the setting of differently sized gaps between the rollers, the shaft and the inner wall of the housing can be carried out simply and functionally reliably and the device required for this is simple and cheap to manufacture is.

Diese Aufgabe wird erfindungsgemäß dadurch gelöst, daß die Walzen, der mit diesen korrespondierende Wellenteil sowie die Gehäusebohrung konisch ausgebildet sind, die Welle gegenüber den Walzen axial verschiebbar ist und der für die Verschiebung erforderliche Schub über einen Wellenteil ausgeübt wird, der axial in den konisch ausgebildeten mit den Walzen korrespondierenden Wellenteil einmündet.This object is achieved in that the rollers, the corresponding shaft part and the housing bore are conical, the shaft is axially displaceable relative to the rollers and the thrust required for the displacement is exerted via a shaft part which is axially formed in the conical with the rollers corresponding shaft part opens.

Gemäß einer bevorzugten Ausführungsform der Erfindung ist die Welle der Mahlvorrichtung hohl ausgebildet und zirkuliert durch den Hohlraum ein Kühlmittel. Dadurch wird erreicht, daß eine Temperaturerhöhung des Mahlprodukts beim Mahlvorgang nur in dem Maße erfolgt, bei dem sich die Eigenschaften des Mahlprodukts während und nach dem Mahlvorgang nicht ändern.According to a preferred embodiment of the invention, the shaft of the grinding device is hollow and a coolant circulates through the cavity. The result of this is that the temperature of the ground product increases during the grinding process only to the extent that the properties of the ground product do not change during and after the grinding process.

Weitere Einzelheiten der Erfindung ergeben sich aus der nachfolgenden ausführlichen Beschreibung und den beigefügten Zeichnungen, in denen eine bevorzugte Ausführungsform der Erfindung beispielsweise veranschaulicht ist.Further details of the invention will become apparent from the following detailed description and the accompanying drawings, in which a preferred embodiment of the invention is illustrated, for example.

In den Zeichnungen zeigen

  • Figur 1 einen Längsschnitt durch eine Mahlvorrichtung und
  • Figur 2 einen Querschnitt durch eine Mahlvorrichtung entsprechend der Schnittlinie D - D in Figur 1.
Show in the drawings
  • 1 shows a longitudinal section through a grinding device and
  • FIG. 2 shows a cross section through a grinding device along the section line D - D in FIG. 1.

Eine Mahlvorrichtung 10 besteht im wesentlichen aus dem Unterbau 11 mit Motor, hydraulischer Einrichtung ect., dem Lagerständer 12, der Mahleinheit 13, der Zuführpumpe 14, dem Mahlprodukteingang 15 und dem Mahlproduktausgang 16, dem Kühlmitteleinlauf 17 und dem Kühlmittelablauf 18 für das Außenkühlungssystem und dem Kühlmitteleinlauf 19 und dem Kühlmittelablauf 20 für das Innenkühlungssystem.A grinding device 10 consists essentially of the substructure 11 with a motor, hydraulic device ect., The bearing stand 12, the grinding unit 13, the feed pump 14, the grinding product inlet 15 and the grinding product outlet 16, the coolant inlet 17 and the coolant outlet 18 for the external cooling system and the Coolant inlet 19 and the coolant outlet 20 for the internal cooling system.

Wie im Bild 1 gezeigt, steht auf dem Unterbau 11 ein Lagerständer 12. Durch den Lagerständer 12 verläuft eine Welle 27, die von zwei Rollenlagern 28, 29 getragen wird. Am linken Ende der Welle 27 befindet sich ein Mahlelement 42. Auf der rechten Seite der Welle 27 ist eine Riemenscheibe 26 angebracht.As shown in Figure 1, a bearing stand 12 stands on the substructure 11. A shaft 27 runs through the bearing stand 12 and is supported by two roller bearings 28, 29. At the left end of the shaft 27 there is a grinding element 42. A pulley 26 is attached to the right side of the shaft 27.

Außerdem ist im Unterbau 11 ein Motor 22 installiert, dessen Drehachse 23 mit einer Riemenscheibe 24 versehen ist. An dieser Riemenscheibe 24 und der Riemenscheibe 26 der Welle 27 werden einige Riemen 25 aufgespannt. Die Antriebskraft des Motors 22 wird über die Riemenscheibe 24, die Riemen 25 und die Riemenscheibe 26 auf die Welle 27 übertragen, um die Welle 27 anzutreiben.In addition, a motor 22 is installed in the substructure 11, the axis of rotation 23 of which is provided with a pulley 24. On this pulley 24 and the pulley 26 of the shaft 27 some belts 25 are stretched. The driving force of the motor 22 is transmitted to the shaft 27 through the pulley 24, the belts 25 and the pulley 26 to drive the shaft 27.

Im Lagerständer 12 befindet sich ein Kühlmantel 30, der um die Lager 28, 29 gelegt ist. Mit Hilfe des durch den Kühlmittelzulauf 31 kommenden Kühlmittels wird die hohe Wärme abgekühlt, die durch das Drehen in den beiden Rollenlagern 28, 29 entsteht. Um eine Übertragung der hohen Wärme auf die linke Mahleinheit 13 zu vermeiden, kann das Kühlmittel durch den Kühlmittelablauf 32 am Grund des Mantels 30 abgeführt werden. Will man die Kühlwirkung erhöhen, kann man das Kühlmittel ständig fließen lassen.In the storage stand 12 there is a cooling jacket 30 which is placed around the bearings 28, 29. With the help of the coolant coming through the coolant inlet 31, the high heat that is generated by the rotation in the two roller bearings 28, 29 is cooled. In order to avoid transfer of the high heat to the left grinding unit 13, the coolant can be removed through the coolant outlet 32 at the bottom of the jacket 30. If you want to increase the cooling effect, you can let the coolant flow continuously.

Auf dem Lagerständer 12 sitzt eine Ölzuführung 40, in die Schmieröl eingefüllt wird, um die Rollenlager 28, 29 zu schmieren. An der linken Seite des Lagerständers 12 sitzt eine Abstandshülse 33. Links neben der Abstandshülse 33 befindet sich eine Mahleinheit 13. In der Abstandshülse 33 ist eine Abstandskammer 34 vorgesehen, durch die das Rollenlager 29 von der Mahleinheit 13 getrennt wird. An der linken Seite der Abstandshülse 33 befindet sich ein Deckel 35, der einen Teil der Mahleinheit darstellt. An der rechten Seite der Abstandskammer 34 befindet sich ein Satz Öldichtung 36 und Spannring 37, um gegen das rechte Rollenlager 29 abzudichten, damit das Schmieröl nicht in die Abstandskammer 34 eindringt. Links der Abstands­kammer 34 ist ebenfalls ein Satz Ölabdichtung 38 und Spann­ring 39 eingebaut, um den Spalt zwischen dem Deckel 35 und der Welle 27 abzudichten, damit das in die Abstands­ kammer 34 eingedrungene Schmieröl nicht in die Mahleinheit 13 eindringen kann. Auf diese Weise wird zwischen dem Rollenlager 29 und der Mahleinheit 13 eine doppelte Trennung vollzogen und das Mahlprodukt in der Mahleinheit 13 wird wirksam vor Verunreinigung geschützt. Falls die Öldichtung 36 rechts der Abstandskammer 34 versagt, kann das in die Abstandskammer 34 gelangte Schmieröl ohne Schwierigkeiten durch den Ölablauf 41 am Grund der Abstandskammer 34 herauslaufen. Es verbleibt nicht in der Abstandskammer 34. Deshalb kann das eingedrungene Schmieröl die Höhe der Ölabdichtung 38 nicht erreichen. Die Ölabdichtung 38 hat außerdem noch die gleiche Trennfunktion. Deshalb kann das Schmieröl keinesfalls in die Mahleinheit 13 gelangen. Die Reihheit des Mahlproduktes ist gewährleistet. Die Mahleinheit 13 ist mit einem rechten Deckel 35 versehen, der an der linken Seite der rechten Abstandshülse 33 befestigt ist. Das 1. Mahlelement 42 ist an der linken Seite des rechten Deckels 35 angebracht, der linke Deckel 43 an der linken Seite des 1. Mahlelements 42. Der rechte Deckel 35, das 1. Mahlelement 42 und der linke Deckel 43 bilden zusammen einen einheitlichen Mahlraum (42 a). Das 2. Mahlelement 44 ist an der linken Seite der Welle 27 befestigt und in den oben beschriebenen Mahlraum(42 a) eingesteckt. Einige 3. Mahlelemente 52 befinden sich im Mahlraum zwischen dem 1. Mahlelement 42 und dem 2. Mahlelement 44.On the bearing stand 12 there is an oil feed 40 into which lubricating oil is filled in order to lubricate the roller bearings 28, 29. A spacer sleeve 33 is located on the left side of the bearing stand 12. A grinding unit 13 is located to the left of the spacer sleeve 33. A spacer chamber 34 is provided in the spacer sleeve 33, through which the roller bearing 29 is separated from the grinding unit 13. On the left side of the spacer sleeve 33 there is a cover 35, which represents part of the grinding unit. On the right side of the spacing chamber 34 there is a set of oil seal 36 and clamping ring 37 to seal against the right roller bearing 29 so that the lubricating oil does not penetrate into the spacing chamber 34. To the left of the spacing chamber 34 is also a set of oil seal 38 and clamping ring 39 to seal the gap between the cover 35 and the shaft 27, so that the spacing Chamber 34 penetrated lubricating oil can not penetrate the grinding unit 13. In this way, a double separation is carried out between the roller bearing 29 and the grinding unit 13 and the ground product in the grinding unit 13 is effectively protected against contamination. If the oil seal 36 on the right of the spacing chamber 34 fails, the lubricating oil that has entered the spacing chamber 34 can run out through the oil drain 41 at the bottom of the spacing chamber 34 without difficulty. It does not remain in the spacing chamber 34. Therefore, the lubricating oil that has penetrated cannot reach the height of the oil seal 38. The oil seal 38 also has the same separation function. Therefore, the lubricating oil can never get into the grinding unit 13. The order of the ground product is guaranteed. The grinding unit 13 is provided with a right cover 35 which is attached to the left side of the right spacer sleeve 33. The 1st grinding element 42 is attached to the left side of the right cover 35, the left cover 43 to the left side of the 1st grinding element 42. The right cover 35, the 1st grinding element 42 and the left cover 43 together form a uniform grinding space (42 a). The second grinding element 44 is fastened to the left side of the shaft 27 and inserted into the grinding chamber (42 a) described above. Some 3rd grinding elements 52 are located in the grinding chamber between the 1st grinding element 42 and the 2nd grinding element 44.

Das 1. Mahlelement 42 hat eine Innenwand des 1. Innenkegel­stumpfes 46. Diese Innenkegelwand 46 hat das 1. geometrische Zentrum 47, d.h. die Mittelachse des Innenkegelstumpfes 46, die 1. virtuelle Innenkegelspitze 48 und den 1. Innen­kegelwinkel .The 1st milling element 42 has an inner wall of the 1st inner truncated cone 46. This inner taper wall 46 has the 1st geometric center 47, i.e. the central axis of the inner truncated cone 46, the first virtual inner cone tip 48 and the first inner cone angle.

Das 2. Mahlelement 44 hat eine Außenwand 49 des 2. Außenkegel­stumpfes. Diese Außenwand 49 hat das 2. geometrische Zentrum 50, die Mittelachse des Außenkegels, die 2. virtuelle Außenkegelspitze 51 und den 2. Außenkegelwinkel .The second grinding element 44 has an outer wall 49 of the second outer truncated cone. This outer wall 49 has the 2nd geometric center 50, the central axis of the outer cone, the 2nd virtual one Outer cone tip 51 and the second outer cone angle.

Das 2. geometrische Zentrum 50 des genannten 2. Mahl­elements 44 und das 1. geometrische Zentrum 47 des genannten 1. Mahlelements 42 fallen in etwa zusammen, das heißt, das 1. Mahlelement 42 und das 2. Mahlelement 44 haben das gleiche Zentrum. Die 2. virtuelle Kegelspitze 51 des 2. Mahlelements 44 und die 1. virtuelle Kegelspitze 48 des 1. Mahlelements 42 fallen in etwa zusammen.The 2nd geometric center 50 of the 2nd grinding element 44 mentioned and the 1st geometric center 47 of the 1st grinding element 42 mentioned coincide approximately, that is to say the 1st grinding element 42 and the 2nd grinding element 44 have the same center. The 2nd virtual cone tip 51 of the 2nd grinding element 44 and the 1st virtual cone tip 48 of the 1st grinding element 42 coincide approximately.

Die 3. Mahlelemente 52 befinden sich im Mahlraum zwischen dem 1. Mahlelement 42 und dem 2. Mahlelement 44. Die 3. virtuellen Außenkegelspitzen 55 der 3. Mahlelemente 52 und die 1. virtuelle Innenkegelspitze 48 des 1. Mahlelements 42 und die 2. virtuelle Außenkegelspitze 51 des 2. Mahlelements 44 fallen in etwa zusammen. Deshalb befindet sich das 2. Mahl­element 44 zwischen den zwei anderen Elementen 42, 52 und kommt mit ihnen in Berührung.The 3rd grinding elements 52 are located in the grinding chamber between the 1st grinding element 42 and the 2nd grinding element 44. The 3rd virtual outer cone tips 55 of the 3rd grinding elements 52 and the 1st virtual inner cone tip 48 of the 1st grinding element 42 and the 2nd virtual one Outer cone tip 51 of the second grinding element 44 coincide approximately. Therefore, the second grinding element 44 is located between the two other elements 42, 52 and comes into contact with them.

Oben links von der Mahleinheit 13 befindet sich der Mahlprodukt­eingang 15, der mit dem Mahlraum verbunden ist. Unten rechts von der Mahleinheit 13 befindet sich der Mahlprodukt­ausgang 16, der ebenfalls mit dem Mahlraum verbunden ist, um das fertig gemahlene Mahlprodukt abzuführen.The grinding product inlet 15, which is connected to the grinding chamber, is located at the top left of the grinding unit 13. At the bottom right of the grinding unit 13 is the grinding product outlet 16, which is also connected to the grinding chamber in order to discharge the finished grinding product.

Somit dreht sich das 1. Mahlelement 42, das 2. Mahlelement 44 aber nicht, so drehen sich die 3. geometrischen Zentren 54 der 3. Mahlelemente 52 um das 1. geometrische Zentrum 47 und zugleich drehen sich die 3. Mahlelemente 52 auch um deren 3. geometrische Zentren 54.Thus, the 1st grinding element 42 rotates, but the 2nd grinding element 44 does not, so the 3rd geometric centers 54 of the 3rd grinding elements 52 rotate about the 1st geometric center 47 and at the same time the 3rd grinding elements 52 also rotate about their center 3. Geometric centers 54.

Oder dreht sich das 2. Mahlelement 44, das 1. Mahlelement 42 jedoch nicht, dann drehen sich die 3. Mahlelemente auf die gleiche Weise wie bereits oben beschrieben.Or if the 2nd grinding element 44 rotates, but the 1st grinding element 42 does not, then the 3rd grinding elements rotate in the same way as already described above.

Oder bewegen sich die 3. geometrischen Zentren 54 der 3. Mahlelemente 52 nicht, aber die 3. Mahlelemente 52 können sich um ihre 3. geometrischen Zentren 54 frei drehen, dann werden sich das 1. Mahlelement 42 und das 2. Mahlelement 44 um ihre eigenen geometrischen Zentren, das heißt, um das 1. geometrische Zentrum 47 und das 2. geometrische Zentrum 50 drehen.Or if the 3rd geometric centers 54 of the 3rd grinding elements 52 do not move, but the 3rd grinding elements 52 can rotate freely about their 3rd geometric centers 54, then the 1st grinding element 42 and the 2nd grinding element 44 will turn around them own geometric centers, that is, rotate around the first geometric center 47 and the second geometric center 50.

Bei den oben genannten drei Betriebsarten können sich die Bauteile aufgrund gegenseitiger Reibung gegeneinander drehen. Es kann auch ein Zwangsantrieb mit Zahnrädern verwendet werden, um das Gleiten zwischen den drei Mahl­elementen zu vermeiden. Stellt man verschiedene passende Zahnradübersetzungen ein, werden die linearen Geschwindigkeiten an den Berührungsstellen der drei Mahlelemente unterschiedlich. Dann kann auch die Gleitreibung zum Mahlen benutzt werden. Unser praktisches Beispiel bezieht sich darauf, daß sich das 2. Mahlelement 44 dreht, das 1. Mahlelement 42 jedoch bewegungslos bleibt. Wir verwenden zur Erläuterung hier nicht den Zwangsantrieb mit Zahnrädern, sondern benutzen die Rollreibung.In the above three operating modes, the components can rotate against each other due to mutual friction. A positive drive with gears can also be used to prevent sliding between the three grinding elements. If you set different suitable gear ratios, the linear speeds at the points of contact of the three grinding elements are different. Then the sliding friction can also be used for grinding. Our practical example relates to the fact that the second grinding element 44 rotates, but the first grinding element 42 remains motionless. We do not use the positive drive with gears for explanation, but use the rolling friction.

Wie im Bild 1 gezeigt, dreht sich die Welle 27 und mit dieser das 2. Mahlelement 44. Das 1. Mahlelement 42 läuft nicht, deshalb werden die 3. Mahlelemente 52 mit Hilfe der Reibungskraft zwischen dem 2. Mahlelement 44 und den 3. Mahlelementen 52 und durch die Reibungswirkung zwischen dem 2. Mahlelement 44 und dem 1. Mahlelement 42 um das 1. geometrische Zentrum gedreht. Die 3. Mahlelemente 52 drehen sich außerdem selbst auch um die eigenen 3. geometrischen Zentren 54. Wie in Bild 2 gezeigt, wird das in den Mahlraum gelangte Mahlprodukt durch Walzen gebrochen und durch die Reibung von zwei nebeneinanderliegenden 3. Mahlelementen 52 zermahlen. Die Mahlfläche ist groß und die Mahlkraft kann entsprechend der axialen Schubkraft auf das 2. Mahlelement 44 eingestellt werden. Je härter das Mahlprodukt ist, desto mehr kann die Schubkraft erhöht werden. Für weichere Mahlprodukte wird die Schubkraft reduziert. Daher ist die Mahlleistung gut.As shown in Figure 1, the shaft 27 rotates and with it the second grinding element 44. The first grinding element 42 does not run, therefore the third grinding elements 52 become between the second grinding element 44 and the third grinding elements with the aid of the frictional force 52 and rotated about the 1st geometric center by the frictional action between the 2nd grinding element 44 and the 1st grinding element 42. The third milling elements 52 also rotate themselves around their own third geometric centers 54. As shown in Figure 2, the milling product that has entered the milling chamber is broken by rolling and ground by the friction of two third milling elements 52 lying next to one another. The grinding surface is large and the grinding force can be applied to the second grinding element 44 in accordance with the axial thrust can be set. The harder the ground product, the more the thrust can be increased. The thrust is reduced for softer ground products. Therefore, the grinding performance is good.

Wie in Bild 1 zu sehen ist, gehören zur Mahldrucksteuerung 56 folgende Teile: Eine Schubplatte 58, die mit einem Gewinde 57 an die Welle 27 angeschraubt ist und durch eine Schraube 59 an der rechten Seite der Riemenscheibe 26 verschraubt ist und eine Schubhülle 60, die die Welle 27 umhüllt. Ihr linkes Ende drückt die rechte Seite der Platte 58. Dazwischen befindet sich ein Lager 61. Eine Stützvorrichtung 62 steht auf dem Unterbau 11. In dieser Stützvorrichtung 62 ist ein Zylinder 63 angebracht, in welchem sich ein Kolben 64 und eine Feder 65 befinden. Der Kolben ist an der Schubhülle 60 befestigt. Eine hydraulische Leitung 66 führt das Hydrauliköl von der hydraulischen Steuerung 67 im Unterbau 11 in den Zylinder 63, um den Kolben 64 anzutreiben, damit die Schubhülle 60 auf die Riemenscheibe 2 Druck ausüben kann. Dann wird die Welle 27 von der Schubplatte 58 durch die Schraube 57 gedrückt und das 2. Mahlelement 44 am linken Ende der Welle 27 wird nach links gedrückt. Die Stärke des Drucks hängt vom Druck im Zylinder 63 an der rechten Seite ab. Wird kein Druck mehr ausgeübt, so wird die Schubwirkung von der Gegenfeder 65 aufgehoben.As can be seen in Figure 1, the grinding pressure control 56 includes the following parts: a thrust plate 58, which is screwed onto the shaft 27 with a thread 57 and is screwed by a screw 59 to the right side of the pulley 26, and a thrust sleeve 60, which the shaft 27 envelops. Its left end presses the right side of the plate 58. In between there is a bearing 61. A support device 62 stands on the substructure 11. In this support device 62 there is a cylinder 63 in which a piston 64 and a spring 65 are located. The piston is attached to the thrust sleeve 60. A hydraulic line 66 leads the hydraulic oil from the hydraulic control 67 in the substructure 11 into the cylinder 63 in order to drive the piston 64 so that the thrust sleeve 60 can exert pressure on the pulley 2. Then the shaft 27 is pushed by the thrust plate 58 by the screw 57 and the second grinding element 44 at the left end of the shaft 27 is pressed to the left. The strength of the pressure depends on the pressure in the cylinder 63 on the right side. If no more pressure is exerted, the thrust effect is canceled by the counter spring 65.

Zwischen der rechten Seite der Schubhülle 60 und der rechten Seite der Welle 27 sitzt ein Lager 68, das mit einem Deckel 69 abgedichtet wird. Um das 2. Mahlelement 44 abkühlen zu können, wird es hohl ausgebildet. Die gesamte Welle 27 wird hohl ausgebildet. Das Kühlmittel kann vom Kühlmitteleinlauf 19 durch die Innenöffnung 70 der Welle 27 bis zur Innenöffnung 71 des 2. Mahlelements 44 gelangen, dann aus dem Kühlmittelablauf 20 herausfließen. Es läuft dann ununterbrochen im Kreis. Die beim Mahlen entstehende Wärme wird somit abgeleitet.Between the right side of the thrust sleeve 60 and the right side of the shaft 27 there is a bearing 68 which is sealed with a cover 69. In order to be able to cool the second grinding element 44, it is made hollow. The entire shaft 27 is hollow. The coolant can pass from the coolant inlet 19 through the inner opening 70 of the shaft 27 to the inner opening 71 of the second grinding element 44, and then flow out of the coolant outlet 20. Then it runs continuously in a circle. The heat generated during grinding is thus dissipated.

Das 1. Mahlelement 42 ist von außen mit einem spiralförmigen Kühlkanal 72 versehen. Das Kühlmittel kann durch den Kühlmitteleinlauf 17 in den Kühlkanal 72 hineinlaufen und aus dem Kühlmittelablauf 18 herauslaufen. Es handelt sich dabei wieder um einen Kreislauf. Die beim Mahlen entstehende Wärme wird somit abgeleitet. Durch die doppelte Abkühlung, von außen und von innen, wird die Temperaturerhöhung wirk­sam bekämpft und die Erhaltung der Eigenschaften des Mahlprodukts ist gesichert.The first grinding element 42 is provided from the outside with a spiral cooling channel 72. The coolant can run through the coolant inlet 17 into the cooling channel 72 and run out of the coolant outlet 18. It is again a cycle. The heat generated during grinding is thus dissipated. The double cooling, from the outside and the inside, effectively combats the temperature increase and ensures that the properties of the ground product are preserved.

Claims (23)

1. Mahlvorrichtung zum Feinvermahlen fließfähigen Materials, insbesondere zum Herstellen von Farbpigmentdispersion, mit einem liegenden Gehäuse, dem einerends das Material mittels einer Fördereinrichtung zugeführt und andernends entnommen wird, mit einer im Gehäuse konzentrisch angeordneten, umlaufend angetriebenen Welle und mit mindestens einer in dem zwischen Gehäuse und Welle ausgebildeten Ringkanal vorgesehenen, von der Welle mit gleicher Umlaufzahl angetriebenen und mit der Gehäuseinnenwand bzw. der Wellenoberfläche zusammenwirkenden Mahlwalze dadurch gekennzeichnet, daß die Walzen (52), der mit diesen korrespondierende Wellenteil (44) sowie der Mahlraum (42a) konisch ausgebildet sind, die Welle (27) gegenüber den Walzen (52) axial ver­schiebbar ist und der für die Verschiebung erforderliche Schub über einen Wellenteil (27a) ausgeübt wird, der axial in den konisch ausgebildeten, mit den Walzen korres­pondierenden Wellenteil (44) einmündet.1. Grinding device for fine grinding of flowable material, in particular for producing color pigment dispersion, with a lying housing, from which the material is fed on one end by means of a conveying device and removed on the other, with a rotating shaft which is arranged concentrically in the housing and with at least one in the between the housing provided and shaft formed annular channel, driven by the shaft with the same number of revolutions and interacting with the housing inner wall or the shaft surface, characterized in that the rollers (52), the corresponding shaft part (44) and the grinding chamber (42a) are conical , the shaft (27) is axially displaceable relative to the rollers (52) and the thrust required for the displacement is exerted via a shaft part (27a) which opens axially into the conical shaft part (44) corresponding to the rollers. 2. Mahlvorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß der Wellenteil (27a) einen kreisförmigen Querschnitt hat.2. Grinding device according to claim 1, characterized in that the shaft part (27a) has a circular cross section. 3. Mahlvorrichtung nach Anspruch 1 und 2, dadurch gekennzeichnet, daß der Wellenteil (27a) sich durch einen Lagerständer (12) in den Mahlraum (42a) er-streckt.3. Grinding device according to claims 1 and 2, characterized in that the shaft part (27a) extends through a bearing stand (12) into the grinding chamber (42a). 4. Mahlvorrichtung nach Anspruch 1 bis 3, dadurch gekennzeichnet, daß eine Schubplatte (58) an den Wellenteil (27a) angeschraubt ist.4. Grinding device according to claim 1 to 3, characterized in that a thrust plate (58) is screwed onto the shaft part (27a). 5. Mahlvorrichtung nach Anspruch 1 bis 4, dadurch gekennzeichnet, daß die Schubplatte (58) mit einem Gewinde (57) an den Wellenteil (27a) angeschraubt ist.5. Grinding device according to claim 1 to 4, characterized in that the thrust plate (58) is screwed onto the shaft part (27a) with a thread (57). 6. Mahlvorrichtung nach Anspruch 1 bis 5, daurch gekennzeichnet, daß die Schubplatte (58) an der der Mahleinheit (3) abgewandten Seite der Riemenscheibe (26) verschraubt ist.6. Grinding device according to claim 1 to 5, characterized in that the thrust plate (58) on the grinding unit (3) facing away from the pulley (26) is screwed. 7. Mahlvorrichtung nach Anspruch 1 bis 6, dadurch gekennzeichnet, daß durch eine Schubhülle (60) Druck auf die Schubplatte (58) und damit auch auf die Riemenscheibe (26) ausgeübt werden kann.7. Grinding device according to claim 1 to 6, characterized in that pressure can be exerted on the thrust plate (58) and thus also on the pulley (26) by a thrust sleeve (60). 8. Mahlvorrichtung nach Anspruch 1 bis 7, dadurch gekennzeichnet, daß die Schubhülle (60) hohlzylinderförmig ausgebildet ist und die Welle (27) umhüllt.8. Grinding device according to claim 1 to 7, characterized in that the thrust sleeve (60) is hollow-cylindrical and envelops the shaft (27). 9. Mahlvorrichtung nach Anspruch 1 bis 8, dadurch gekennzeichnet, daß das der Schubplatte (58) gegenüberliegende Ende der Schubhülle (60) krempenförmig ausgebildet ist, wobei die Krempe (60a) im etwa rechten Winkel vom Hohlzylinder abgeht.9. Grinding device according to claim 1 to 8, characterized in that the thrust plate (58) opposite end of the thrust sleeve (60) is brim-shaped, the brim (60a) coming off at approximately a right angle from the hollow cylinder. 10. Mahlvorrichtung nach Anspruch 1 bis 9, dadurch gekennzeichnet, daß sich zwischen Krempe (60a) und Schubplatte (58) ein Lager (61) befindet.10. Grinding device according to claim 1 to 9, characterized in that there is a bearing (61) between the brim (60a) and the thrust plate (58). 11. Mahlvorrichtung nach Anspruch 1 bis 10, dadurch gekennzeichnet, daß an der Schubhülle (60) ein Kolben (64) befestigt ist.11. Grinding device according to claim 1 to 10, characterized in that a piston (64) is attached to the thrust sleeve (60). 12. Mahlvorrichtung nach Anspruch 1 bis 11, dadurch gekennzeichnet, daß der von der Schubhülle (60) auf die Schubplatte (58) einwirkende Druck hydraulisch gesteuert wird.12. Grinding device according to claim 1 to 11, characterized in that the pressure acting from the thrust sleeve (60) on the thrust plate (58) is controlled hydraulically. 13. Mahlvorrichtung nach Anspruch 1 bis 12, dadurch gekennzeichnet, daß die Welle (27) hohl ausgebildet ist.13. Grinding device according to claim 1 to 12, characterized in that the shaft (27) is hollow. 14. Mahlvorrichtung nach Anspruch 1 bis 13, dadurch gekennzeichnet, daß Kühlmittel durch den Hohlraum in die Welle (27) fließt.14. Grinding device according to claim 1 to 13, characterized in that coolant flows through the cavity into the shaft (27). 15. Mahlvorrichtung nach Anspruch 1 bis 14, dadurch gekennzeichnet, daß die Welle (27) von zwei Rollenlagern (28, 29) getragen wird.15. Grinding device according to claim 1 to 14, characterized in that the shaft (27) is carried by two roller bearings (28, 29). 16. Mahlvorrichtung nach Anspruch 1 bis 15, dadurch gekennzeichnet, daß die Rollenlager (28, 29) mit Hilfe einer Ölzuführung (40) geschmiert werden, die auf dem Lager­ständer (12) sitzt.16. Grinding device according to claim 1 to 15, characterized in that the roller bearings (28, 29) are lubricated with the aid of an oil supply (40) which sits on the bearing stand (12). 17. Mahlvorrichtung nach Anspruch 1 bis 16, dadurch gekennzeichnet, daß an der der Mahleinheit (13) zugewandten zugewandten Seite des Lagerständers (12) eine Abstands­hülse (33) sitzt, an die sich die Mahleinheit (13) anschließt.17. Grinding device according to claim 1 to 16, characterized in that on the side facing the grinding unit (13) facing the bearing stand (12) is a spacer sleeve (33) to which the grinding unit (13) connects. 18. Mahlvorrichtung nach Anspruch 1 bis 17, dadurch gekennzeichnet, daß in der Abstandshülle (33) eine Abstands­kammer (34) vorgesehen ist, die zwischen dem Rollenlager (29) und der Mahleinheit (13) liegt.18. Grinding device according to claim 1 to 17, characterized in that in the spacing sleeve (33) a spacing chamber (34) is provided which lies between the roller bearing (29) and the grinding unit (13). 19. Mahlvorrichtung nach Anspruch 1 bis 17, dadurch gekennzeichnet, daß zwischen der Abstandskammer (34) und dem Rollenlager (29) Öldichtung (36) und Spannring (37) vorgesehen sind.19. Grinding device according to claim 1 to 17, characterized in that between the spacing chamber (34) and the roller bearing (29) oil seal (36) and clamping ring (37) are provided. 20. Mahlvorrichtung nach Anspruch 1 bis 18, dadurch gekennzeichnet, daß zwischen der Abstandskammer (34), dem Deckel (35) und der Welle (27) eine Ölabdichtung (38) und ein Spannring (39) vorgesehen sind.20. Grinding device according to claim 1 to 18, characterized in that an oil seal (38) and a clamping ring (39) are provided between the spacing chamber (34), the cover (35) and the shaft (27). 21. Mahlvorrichtung nach Anspruch 1 bis 20, dadurch gekennzeichnet, daß im Unterbau (11) ein Motor (22) installiert ist, dessen Drehachse (23) mit einer Riemenscheibe (24) versehen ist, und an dieser Riemenscheibe (24) und der Riemenscheibe (26) einige Riemen (25) aufgespannt sind.21. Grinding device according to claim 1 to 20, characterized in that a motor (22) is installed in the substructure (11), the axis of rotation (23) of which is provided with a pulley (24), and on this pulley (24) and the pulley (26) some straps (25) are stretched. 22. Mahlvorrichtung nach Anspruch 1 bis 21, dadurch gekennzeichnet, daß der Gehäusemantel des Mahlraumes (42 a) an seiner Außenfläche von einem spiralförmigen Kühlkanal (72) umgeben ist.22. Grinding device according to claim 1 to 21, characterized in that the housing shell of the grinding chamber (42 a) is surrounded on its outer surface by a spiral cooling channel (72). 23. Mahlvorrichtung nach Anspruch 1 bis 22, dadurch gekennzeichnet, daß der Kühlkanal (72) mit einem Kühlmittel­einlauf (17) und einem Kühlmittelablauf (18) versehen versehen ist.23. Grinding device according to claim 1 to 22, characterized in that the cooling channel (72) is provided with a coolant inlet (17) and a coolant outlet (18).
EP88114990A 1988-09-14 1988-09-14 Milling system Expired - Lifetime EP0358790B1 (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
ES198888114990T ES2034080T3 (en) 1988-09-14 1988-09-14 CRUSHER DEVICE.
AT88114990T ATE79054T1 (en) 1988-09-14 1988-09-14 GRINDING DEVICE.
EP88114990A EP0358790B1 (en) 1988-09-14 1988-09-14 Milling system
DE8888114990T DE3873538D1 (en) 1988-09-14 1988-09-14 GRINDING DEVICE.
GR920402468T GR3006190T3 (en) 1988-09-14 1992-11-06

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP88114990A EP0358790B1 (en) 1988-09-14 1988-09-14 Milling system

Publications (2)

Publication Number Publication Date
EP0358790A1 true EP0358790A1 (en) 1990-03-21
EP0358790B1 EP0358790B1 (en) 1992-08-05

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EP88114990A Expired - Lifetime EP0358790B1 (en) 1988-09-14 1988-09-14 Milling system

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EP (1) EP0358790B1 (en)
AT (1) ATE79054T1 (en)
DE (1) DE3873538D1 (en)
ES (1) ES2034080T3 (en)
GR (1) GR3006190T3 (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102784696A (en) * 2011-05-18 2012-11-21 谢小飞 Reverse tapered double-turbine rod pin medium stirring mill
CN103357489A (en) * 2012-03-26 2013-10-23 谢小飞 Centrifugal type partition-net-free material bead separator for media stirring mill
CN110170358A (en) * 2019-06-27 2019-08-27 曾天杰 A kind of ultra tiny flake nano grinder
CN110252451A (en) * 2019-06-24 2019-09-20 山东天厚新材料科技有限公司 A kind of nano material production grinding device
CN115212976A (en) * 2022-08-08 2022-10-21 洛阳豪特现代测试技术有限公司 Grinding and shaping device and method for soft metal ball

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2480287C1 (en) * 2011-09-01 2013-04-27 Федеральное государственное образовательное учреждение высшего профессионального образования "Красноярский государственный аграрный университет" Centrifugal mill
CN102935397B (en) * 2012-10-31 2015-01-07 无锡科技职业学院 Dual-rotation conical-drum-type horizontal sand mill

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB291952A (en) * 1927-06-07 1928-06-14 Joseph Herbert James Wood Improvements in or relating to machinery for grinding, mixing and like operations
DE3733565A1 (en) * 1987-02-06 1988-08-18 Escher Wyss Gmbh Method for the industrial fibrillation of paper-stock fibres and a device for carrying out the method

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB291952A (en) * 1927-06-07 1928-06-14 Joseph Herbert James Wood Improvements in or relating to machinery for grinding, mixing and like operations
DE3733565A1 (en) * 1987-02-06 1988-08-18 Escher Wyss Gmbh Method for the industrial fibrillation of paper-stock fibres and a device for carrying out the method

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102784696A (en) * 2011-05-18 2012-11-21 谢小飞 Reverse tapered double-turbine rod pin medium stirring mill
CN103357489A (en) * 2012-03-26 2013-10-23 谢小飞 Centrifugal type partition-net-free material bead separator for media stirring mill
CN103357489B (en) * 2012-03-26 2015-05-20 谢小飞 Centrifugal type partition-net-free material bead separator for media stirring mill
CN110252451A (en) * 2019-06-24 2019-09-20 山东天厚新材料科技有限公司 A kind of nano material production grinding device
CN110170358A (en) * 2019-06-27 2019-08-27 曾天杰 A kind of ultra tiny flake nano grinder
CN115212976A (en) * 2022-08-08 2022-10-21 洛阳豪特现代测试技术有限公司 Grinding and shaping device and method for soft metal ball
CN115212976B (en) * 2022-08-08 2024-06-07 洛阳豪特现代测试技术有限公司 Grinding and shaping device and method for soft metal spheres

Also Published As

Publication number Publication date
GR3006190T3 (en) 1993-06-21
ATE79054T1 (en) 1992-08-15
EP0358790B1 (en) 1992-08-05
DE3873538D1 (en) 1992-09-10
ES2034080T3 (en) 1993-04-01

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