DE202005007551U1 - Screw fastener to hold clothing at a grinder carrier, to grind fibers in a refiner, has recesses in the screw head to be gripped by a tool for removal when the head is worn - Google Patents
Screw fastener to hold clothing at a grinder carrier, to grind fibers in a refiner, has recesses in the screw head to be gripped by a tool for removal when the head is worn Download PDFInfo
- Publication number
- DE202005007551U1 DE202005007551U1 DE200520007551 DE202005007551U DE202005007551U1 DE 202005007551 U1 DE202005007551 U1 DE 202005007551U1 DE 200520007551 DE200520007551 DE 200520007551 DE 202005007551 U DE202005007551 U DE 202005007551U DE 202005007551 U1 DE202005007551 U1 DE 202005007551U1
- Authority
- DE
- Germany
- Prior art keywords
- screw
- head
- screw connection
- connection according
- recess
- 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.)
- Expired - Lifetime
Links
- 239000000835 fiber Substances 0.000 title abstract description 6
- 238000000227 grinding Methods 0.000 claims description 21
- 235000021189 garnishes Nutrition 0.000 claims 1
- 239000000725 suspension Substances 0.000 description 5
- 238000009966 trimming Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 2
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000003801 milling Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
Classifications
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21D—TREATMENT OF THE MATERIALS BEFORE PASSING TO THE PAPER-MAKING MACHINE
- D21D1/00—Methods of beating or refining; Beaters of the Hollander type
- D21D1/004—Methods of beating or refining including disperging or deflaking
- D21D1/006—Disc mills
- D21D1/008—Discs
Landscapes
- Paper (AREA)
Abstract
Description
Die Erfindung betrifft eine Schraubverbindung gemäß dem Oberbegriff des Anspruchs 1.The The invention relates to a screw according to the preamble of the claim 1.
Bekanntlich ist die Verwendung von Schrauben eine der am weitesten verbreiteten Methoden, Maschinenteile lösbar miteinander zu verbinden. Um das Festziehen und das Lösen einer Schraubverbindung durchführen zu können, weist die Schraube ein Drehteil, den Schraubenkopf, auf, an dem Schraubwerkzeuge, wie z.B. Schraubenschlüssel oder Schraubenzieher, angesetzt werden können. Dabei haben solche Drehteile, z.B. eine sechskantförmige Umfangsfläche oder auf der Stirnfläche angebrachte sechskantförmige Vertiefungen, Schlitze o.ä.generally known The use of screws is one of the most widely used Methods, machine parts detachable to connect with each other. To tighten and loosen a Carry out screw connection to be able to the screw has a rotating part, the screw head, on which Screwing tools, such as Wrench or screwdriver, can be recognized. In this case, such rotary parts, e.g. a hexagonal peripheral surface or on the face attached hexagonal Depressions, slots or similar
Garnituren zur Bearbeitung von Faserstoffsuspension werden vielfach verwendet. Typische Exemplare sind Mahlgarnituren, Disperger- und Entstippergarnituren. Mahlgarnituren dienen dem Mahlungsprozess der Fasern und werden in Mahlmaschinen eingebaut, die auch als Refiner bezeichnet werden. In den Refinern kommen Mahlscheiben, Mahlkegel oder Mahlzylinder zum Einsatz. Diese sind als Stator und Rotor gegeneinander laufend. Bei Einscheibenmaschinen handelt es sich um je einen Rotor und einen Stator. Bei Doppelscheibenmaschinen sind je zwei Statorscheiben und eine beidseitige Rotorscheibe im Einsatz. Die Fasersuspension fließt zwischen den gegeneinander laufenden Garnituren, z.B. bei Scheiben radial von innen nach außen. Mahlgarnituren enthalten Schneidelemente, z.B. Leisten (sogenannte Messer), durch die die Fasern der Faserstoffsuspension zerkleinert bzw. verändert werden, während die Faserstoffsuspension unter Druck durch die dazwischen liegenden Durchlässe hindurchgefördert wird. Mahlgarnituren werden gegeneinander gepresst, während Disperger- und Entstippergarnituren mit Abständen im Bereich von einem oder mehreren Millimetern betrieben werdenclothings for processing pulp suspension are widely used. Typical examples are Mahlgarnituren, Disperger- and Entstippergarnitur. Mahlgarnituren serve the grinding process of the fibers and be installed in grinding machines, which are also referred to as refiner. In the refiners come grinding discs, grinding cone or grinding cylinder for use. These are running as a stator and rotor against each other. Single-disk machines are each a rotor and a Stator. For double disc machines, there are two stator discs each and a double-sided rotor disk in use. The fiber suspension flows between the mutually running sets, e.g. radial with discs from the inside to the outside. Milling sets contain cutting elements, e.g. Last (so-called Knife) through which the fibers of the pulp suspension are comminuted or changed be while the pulp suspension is conveyed under pressure through the intervening passages. Mahlgarnituren be pressed against each other, while Disperger- and Entstippergarnitururen with intervals be operated in the range of one or more millimeters
Da es sich bei den Garnituren dieser Art um Verschleißteile handelt, die also in bestimmten Abständen ausgetauscht werden müssen, werden diese mittels Schraubverbindungen mit den entsprechenden Teilen in der Maschine, das sind in der Regel mindestens ein Stator und mindestens ein Rotor, verbunden. Um die Zugänglichkeit zu diesen Schraubverbindungen zu gewährleisten, ist es zweckmäßig, die Schraubenköpfe auf der Seite der Garnituren vorzusehen, die bei Betrieb der Bearbeitungsmaschine von Faserstoff berührt sind. Dabei muss hingenommen werden, dass die Bearbeitungselemente an den für die Schraubenköpfe vorgesehenen Stellen unterbrochen werden, wobei nicht nur für den Schraubenkopf selbst ein Platz frei bleiben muss, sondern auch um diesen herum, damit ein Schraubwerkzeug angesetzt werden kann. Diese Schrauben sind bei Betrieb der Maschine hoch belastet, so dass sie eine entsprechende Größe aufweisen müssen. Zumeist handelt es sich dabei um sechskantförmige Schraubenköpfe, um die herum ein Abstand zu den Bearbeitungselementen frei bleiben muss, um den Schraubenschlüssel ansetzen zu können. Als Folge dieser beschriebenen Maßnahmen wird die bearbeitungsaktive Fläche der Garnituren unvermeidlich kleiner, da – wie bereits erwähnt – die Bearbeitungselemente an diesen Stellen unterbrochen sind. Außerdem entstehen durch die frei bleibenden Bereiche störende Wirbelströmungen in der Fasersuspension.There it is in the trimmings of this type are wearing parts, so at certain intervals need to be replaced These are screwed with the appropriate Parts in the machine, these are usually at least one stator and at least one rotor connected. For accessibility to these screw connections to ensure, it is appropriate, the screw heads to provide on the side of the trimmings, the operation of the processing machine touched by pulp are. It must be accepted that the editing elements to the for the screw heads provided points are interrupted, not only for the screw head even a place must remain free, but also around it, so that a screwing can be applied. These screws are heavily loaded during operation of the machine, so they have a corresponding Must have size. mostly these are hexagonal screw heads to which must remain free around a distance to the editing elements, around the wrench to be able to start. As a result of these measures described is the cultivation-active area the trimmings inevitably smaller, there - as already mentioned - the processing elements are interrupted at these points. In addition, created by the free-standing areas disturbing eddy currents in the fiber suspension.
Zwar ist es grundsätzlich auch bekannt, dass ein Schraubenkopf mit einer an der Stirnfläche angebrachten sechskantförmigen Vertiefung (Innen-Sechskantschraube) weniger Platz benötigt als die Außen-Sechskantschrauben, dennoch ist zu erwarten, dass das Problem auch dadurch nicht gelöst würde, da das zum Lösen benötigte Drehmoment auf einen abgerundeten (ausgewaschenen) und/oder in der Tiefe stark verkürzten Innen-Sechskant nicht zuverlässig übertragen werden kann.Though it is basically Also known that a screw head with a mounted on the end face hexagon shape Recess (hexagon socket screw) less space needed as the external hex screws, Nevertheless, it is to be expected that the problem would not be solved by that to solve needed Torque on a rounded (washed out) and / or in the Depth greatly shortened Inner hexagon not reliably transmitted can be.
Es ist Aufgabe der Erfindung, die Schraubverbindung sowie die zu befestigende Garnitur so zu gestalten, dass es gelingt, die Verluste an der Bearbeitungsfläche zu reduzieren, also möglichst gering zu halten und dennoch auch nach eingetretenem Verschleiß ein sicheres Lösen zu gewährleisten.It Object of the invention, the screw and the to be fastened Design the clothing so that it is possible to reduce the losses on the working surface, as possible keep low and still safe even after wear has occurred To solve guarantee.
Erfindungsgemäß wird diese Aufgabe bei einer Schraubvorrichtung der eingangs genannten Art durch die Merkmale im Kennzeichen des Anspruchs 1 gelöst.According to the invention this Task with a screwing of the type mentioned by the features in the characterizing part of claim 1 solved.
In
der
Durch den Einsatz der an sich bekannten Schraube bei der erfindungsgemäßen Schraubvorrichtung werden die nicht zur Bearbeitung des Faserstoffs nutzbaren Bereiche auf der Garnitur reduziert, da die Schraubvorrichtung erstens einen kleineren Schraubenkopf-Durchmesser aufweist und zweitens der freie Platz um den Schraubenkopf herum sehr klein gehalten werden kann, da ein Schraubwerkzeug verwendet wird, das nicht am Umfang des Schraubenkopfes angreifen muss. Auch bei fortgeschrittenem Verschleiß kann die Schraube sicher entfernt werden, denn auch dann noch lässt sich das erforderliche Drehmoment an den beabstandeten Vertiefungen auf den Schraubenkopf übertragen.By the use of the known screw in the screw device according to the invention become the areas not usable for the processing of the pulp reduced on the clothing, since the screwing first, a smaller screw head diameter and secondly the free Space around the screw head can be kept very small, because a screwing tool is used that is not on the circumference of the screw head must attack. Even with advanced wear, the Screw can be removed safely, because even then can be the required torque on the spaced recesses transfer the screw head.
Die Erfindung wird erläutert an Hand von Zeichnungen. Dabei zeigen:The Invention will be explained on the basis of drawings. Showing:
Die
Die
Die
Abmessungen der Schraubverbindung sind mit Vorteil so gewählt, dass
die Höhe
H3 des Schraubenkopfes
In
den
Claims (11)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE200520007551 DE202005007551U1 (en) | 2005-05-12 | 2005-05-12 | Screw fastener to hold clothing at a grinder carrier, to grind fibers in a refiner, has recesses in the screw head to be gripped by a tool for removal when the head is worn |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE200520007551 DE202005007551U1 (en) | 2005-05-12 | 2005-05-12 | Screw fastener to hold clothing at a grinder carrier, to grind fibers in a refiner, has recesses in the screw head to be gripped by a tool for removal when the head is worn |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE202005007551U1 true DE202005007551U1 (en) | 2005-07-21 |
Family
ID=34802477
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE200520007551 Expired - Lifetime DE202005007551U1 (en) | 2005-05-12 | 2005-05-12 | Screw fastener to hold clothing at a grinder carrier, to grind fibers in a refiner, has recesses in the screw head to be gripped by a tool for removal when the head is worn |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE202005007551U1 (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102008039004A1 (en) | 2008-08-21 | 2010-02-25 | Voith Patent Gmbh | Water-suspended cellulose fibers e.g. fresh cellulose fibers, refining method, involves providing channels between refining blocks of refining devices, where channel depth increases or decreases from outwards to inwards in radial direction |
| DE102008039001A1 (en) | 2008-08-21 | 2010-02-25 | Voith Patent Gmbh | Aqueously suspended cellulose fiber e.g. old paper fiber, refining method for double disk refiner, involves guiding suspension between refining devices, where part of blocks of devices has cutting width extended from inner to outer sides |
| DE102008039003A1 (en) | 2008-08-21 | 2010-02-25 | Voith Patent Gmbh | Method for grinding water-suspended cellulose fibers, involves guiding fibers in aqueous suspension between grinding sets provided with grinding blocks |
| DE102008046592A1 (en) | 2008-09-10 | 2010-03-11 | Voith Patent Gmbh | Method for grinding aqueous suspended pulp fibers and grinding set for its implementation |
| DE102008059610A1 (en) | 2008-11-28 | 2010-06-02 | Voith Patent Gmbh | Process for grinding aqueous suspended pulp fibers and grinding sets for its implementation |
| WO2011098147A1 (en) | 2010-02-15 | 2011-08-18 | Voith Patent Gmbh | Method for refining aqueously suspended cellulose fibers and refiner filling for carrying out said method |
| DE102010029752A1 (en) | 2010-06-07 | 2011-12-08 | Voith Patent Gmbh | Method for milling cellulose fiber e.g. fresh cellulose fiber, in aqueous suspension, involves guiding partial flow of suspension to milling edges through hollow space and through openings formed between hollow space and milling edges |
-
2005
- 2005-05-12 DE DE200520007551 patent/DE202005007551U1/en not_active Expired - Lifetime
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102008039004A1 (en) | 2008-08-21 | 2010-02-25 | Voith Patent Gmbh | Water-suspended cellulose fibers e.g. fresh cellulose fibers, refining method, involves providing channels between refining blocks of refining devices, where channel depth increases or decreases from outwards to inwards in radial direction |
| DE102008039001A1 (en) | 2008-08-21 | 2010-02-25 | Voith Patent Gmbh | Aqueously suspended cellulose fiber e.g. old paper fiber, refining method for double disk refiner, involves guiding suspension between refining devices, where part of blocks of devices has cutting width extended from inner to outer sides |
| DE102008039003A1 (en) | 2008-08-21 | 2010-02-25 | Voith Patent Gmbh | Method for grinding water-suspended cellulose fibers, involves guiding fibers in aqueous suspension between grinding sets provided with grinding blocks |
| DE102008046592A1 (en) | 2008-09-10 | 2010-03-11 | Voith Patent Gmbh | Method for grinding aqueous suspended pulp fibers and grinding set for its implementation |
| DE102008059610A1 (en) | 2008-11-28 | 2010-06-02 | Voith Patent Gmbh | Process for grinding aqueous suspended pulp fibers and grinding sets for its implementation |
| US8789775B2 (en) | 2008-11-28 | 2014-07-29 | Voith Patent Gmbh | Method for refining aqueous suspended cellulose fibers and refiner fillings for carrying out said method |
| WO2011098147A1 (en) | 2010-02-15 | 2011-08-18 | Voith Patent Gmbh | Method for refining aqueously suspended cellulose fibers and refiner filling for carrying out said method |
| DE102010029752A1 (en) | 2010-06-07 | 2011-12-08 | Voith Patent Gmbh | Method for milling cellulose fiber e.g. fresh cellulose fiber, in aqueous suspension, involves guiding partial flow of suspension to milling edges through hollow space and through openings formed between hollow space and milling edges |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| R079 | Amendment of ipc main class |
Free format text: PREVIOUS MAIN CLASS: B02C0007120000 Ipc: D21D0001300000 |
|
| R207 | Utility model specification |
Effective date: 20050825 |
|
| R150 | Term of protection extended to 6 years |
Effective date: 20080610 |
|
| R151 | Term of protection extended to 8 years | ||
| R151 | Term of protection extended to 8 years |
Effective date: 20111112 |
|
| R158 | Lapse of ip right after 8 years |
Effective date: 20131203 |