Classifications

• • D—TEXTILES; PAPER
  • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
  • D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
  • D21F1/00—Wet end of machines for making continuous webs of paper
  • D21F1/02—Head boxes of Fourdrinier machines
• • D—TEXTILES; PAPER
  • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
  • D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
  • D21F1/00—Wet end of machines for making continuous webs of paper
  • D21F1/02—Head boxes of Fourdrinier machines
  • D21F1/028—Details of the nozzle section

Definitions

• the invention relates to a multi-part separating element of a multi-layer headbox, a machine for producing a paper or cardboard web, for separating two suspension streams according to the
• a corresponding separating element according to the preamble of claim 1 is known from German published patent application DE 44 02625 A1. This document was intended to show a separating element which, among other things, should enable quick and easy installation and removal.
• this design of the separating element is relatively complex to manufacture and requires a pneumatic unit, which is constantly under pressure during operation, for fixing the movable part.
• the object of the invention is to provide a separating element which eliminates the disadvantages of the prior art and in particular enables the end part of a separating element to be changed very easily without requiring additional passages in the side wall of the headbox for hydraulic elements.
• the multi-part separating element of a multi-layer headbox of a paper machine which consists of at least one upstream and one downstream first and second component which extends across the machine width, is characterized in that the components are connected to one another with the aid of a bayonet fastening.
• At least one first component has a plurality of bolts distributed across the machine width and at least one second component has engaging elements that are compatible with it, the bolts for fastening the two
• Components are inserted into the engaging elements so that a firm and gap-free closure between the components.
• this can be done by a relative movement of the components to each other, which can be a mutual lateral displacement of the components.
• Another advantageous embodiment of the separating element is that the engaging elements and the bolts alternate with one another on the components, so that alternating bolts and engaging elements can be found on one component, which are arranged on the opposite component accordingly in reverse order.
• the separating element in particular the downstream component, can, according to the invention, be made in one piece, from stainless steel or in composite construction from stainless steel and a fiber composite.
• Machine width - Backlash-free tensioning of the joint between the two components in the operating state; only a short displacement path is necessary for removing and installing the downstream component; Passages in the side wall for hydraulic fasteners can be avoided; - A mounting device only has to be attached for installation and removal with the side wall front folded down; simple change of the geometric shape of the downstream component
• Figure 1 Cross section through a schematically illustrated headbox with two separating elements according to the invention
• Figure 2 Two separating elements according to the invention, each with two
• Figure 4 Detailed view of the bayonet connection in the mounting position
• Figure 5 Detailed view of the bayonet connection in the operating position.
• Figure 1 shows the cross section through a schematically illustrated headbox for the production of a 3-layer paper with the top 1, the bottom 2 and with two separating elements 3 and 4 according to the invention in their operating position.
• FIG. 2 shows two different separating elements 3 and 4 according to the invention, each with two components, in a separate illustration.
• the separating elements consist of the components 3.1 and 3.2 or 4.1 and 4.2, the separating element 4 additionally having a separate tip component 4.3 attached at the front.
• the example here is Component 4.2 of one of many engagement elements 4.4 arranged over the machine width can be recognized, which can engage in the guide groove 4.6 of the component 4.1 and is held with the help of the bayonet bolts 4.5.
• FIG. 3 shows the two separating elements 3 and 4 according to the invention, the components 3.1 and 3.2 or 4.1 and 4.2 being firmly connected to one another via the bayonet connection, that is to say in the operating position.
• the parting lines 4.7 which are formed and which can be kept particularly small in the inventive design of the parting elements are also designated.
• Section A-A which is shown in the detailed representations of FIGS. 4 and 5, is also indicated.
• FIG. 4 shows the detailed view of the bayonet connection in section A-A in the assembly position, specifically at the moment when the engaging elements 4.4 are inserted into the guide groove 4.6 of the component 4.1, the bayonet bolt 4.5 being immersed in the opening of the engaging element 4.4.
• the components 4.1 and 4.2 are then displaced relative to one another, so that the bayonet bolt, as shown in FIG. 5, slides into the engagement element and because of the
• Shape of the engaging element is a tension of the two components at 4.8 is brought about.

Landscapes

• Paper (AREA)
• Replacement Of Web Rolls (AREA)
• Slide Fasteners, Snap Fasteners, And Hook Fasteners (AREA)
• Connector Housings Or Holding Contact Members (AREA)
• Coupling Device And Connection With Printed Circuit (AREA)

Applications Claiming Priority (3)

Publications (2)

Family

ID=7815338

Family Applications (1)

Country Status (4)

Families Citing this family (9)

Family Cites Families (2)

• 1996
  • 1996-12-19 DE DE19652983A patent/DE19652983A1/de not_active Withdrawn
• 1997
  • 1997-10-25 WO PCT/DE1997/002502 patent/WO1998027270A1/fr active IP Right Grant
  • 1997-10-25 DE DE59705926T patent/DE59705926D1/de not_active Expired - Fee Related
  • 1997-10-25 AT AT97949853T patent/ATE211195T1/de not_active IP Right Cessation
  • 1997-10-25 EP EP97949853A patent/EP0951600B1/fr not_active Expired - Lifetime

Non-Patent Citations (1)

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