US3420736A - Felt cleaner for paper making machine - Google Patents

Felt cleaner for paper making machine Download PDF

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Publication number
US3420736A
US3420736A US484371A US3420736DA US3420736A US 3420736 A US3420736 A US 3420736A US 484371 A US484371 A US 484371A US 3420736D A US3420736D A US 3420736DA US 3420736 A US3420736 A US 3420736A
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US
United States
Prior art keywords
felt
paper making
making machine
suction box
dense
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
Application number
US484371A
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English (en)
Inventor
Edward D Kwasniewski
Howard E Barton
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.)
Kennecott Corp
Original Assignee
Carborundum Co
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 Carborundum Co filed Critical Carborundum Co
Application granted granted Critical
Publication of US3420736A publication Critical patent/US3420736A/en
Assigned to KENNECOTT CORPORATION reassignment KENNECOTT CORPORATION MERGER (SEE DOCUMENT FOR DETAILS). EFFECTIVE DEC. 31, 1980 NORTH DAKOTA Assignors: BEAR CREEK MINING COMPANY, BEAR TOOTH MINING COMPANY, CARBORUNDUM COMPANY THE, CHASE BRASS & COPPER CO. INCORPORATED, KENNECOTT EXPLORATION, INC., KENNECOTT REFINING CORPORATION, KENNECOTT SALES CORPORATION, OZARK LEAD COMPANY, PLAMBEAU MINING CORPORATION, RIDGE MINING CORPORATION (ALL MERGED INTO)
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • D21F1/32—Washing wire-cloths or felts

Definitions

  • a device for cleaning a felt fabric employed in a paper making machine comprising a suction box having a slot therein with tubular members on opposite sides of the slot.
  • the tubular members which are in direct contact ith the felt fabric, are composed of a hard dense ceramic material to preclude damage to the felt fabric while effectively permitting the extraction of water therefrom and the attendant dirt and foreign matter.
  • This invention relates to improvements in felt cleaners for paper making machines.
  • a paper making machine such as for example as a Fourdrinier machine
  • the latter is directed off of the wire screen onto an endless felt blanket which conveys the wet sheet of paper pulp to the calender rolls.
  • the web is supported on the felt during the calendering operation and additional water is extracted therefrom.
  • the felt cleaner is used in the press section, which in general is between the Fourdrinier or other forming device, and the dryer section. A detergent or wetting agent may be injected into the felt ahead of the felt cleaner.
  • One object of this invention is to improve the construction of cleaning devices for the felt of a paper making machine and to overcome the foregoing objections.
  • Another object of the invention is to provide wear sur- [faces for the felt conditioning devices which not only will avoid damage to the felt but will also reduce the drag load over the wear surfaces and thereby lower power requirements for movement of the felt rectilinearly.
  • Still another object of the invention is to provide for the use of hard ceramic material such as dense silicon carbide for the wear surfaces of felt conditioning devices, which are in contact with the felt and exposed to excessive wear.
  • a suction box or pipe for an endless felt of a paper making machine with one or more contact surfaces in position to bear against the surface of the felt and formed of a dense silicon carbide or other suitable ceramic material.
  • This ceramic material may be in the form of one or more tubes bearing against the surface of the felt and which is secured by suitable clamp means on a suction pipe into and through which water can be extracted with a sufficient air flow to fluff the felt and improve the characteristics thereof.
  • FIG. 1 is a diagrammatic side elevation of a portion of a paper making machine to which the invention may be applied;
  • FIG. 2 is a dissassembled perspective view of portions of the felt conditioning device.
  • FIG. 3 is a cross section therethrough.
  • the numeral 1 illustrates the forming felt of a paper making machine onto which the web of paper pulp is received from the forming apparatus, such for example as a Fourdrinier wire screen.
  • the wet web is deposited initially onto the top reach of the felt I and usually it passes between press rolls such as those generally designated at 2 and which serve not only to remove water from the web but also for surfacing the latter.
  • the conditioning means frequently includes provisions for spraying water onto the surface of the felt to effect loosening of dirt and foreign matter therefrom and the application of suction therethrough to maintain a flow of air which will fluff the felt and aid in removing the water.
  • Felt conditioning devices are available in many designs, such as suction boxes, felt conditioning shoes, Uhle boxes, Scofield venturi, etc. All of these have wear surfaces in contact with the felt and the invention may be applied thereto, as exemplified herein.
  • the invention is shown as applied to a suction box, generally designated at 3 in FIG. 1 and shown more in detail in FIGS. 2 and 3.
  • the suction box 3 is shown in connection with the bottom reach of the felt 1, although it may be applied to any part of the felt as found desirable.
  • the suction box 3 comprises a suction pipe 4 which ex-- tends from side-to-side of the felt and has a slot 5 in one side thereof toward the felt, which slot 5 is open throughout the width of the felt.
  • the suction pipe 4 is connected with suitable means for applying suction thereto and usually would be closed at one end or at both ends according to whether the suction means is connected therewith at one end or intermediate the ends of the pipe.
  • a suitable metal or plastic pipe may be used for this purpose.
  • shoulder members such as bars 6, which are permanently secured to the outer surface of the pipe 4 by suitable means, such as welding, soldering or the like, indicated generally at 7.
  • the shoulder members 6 are provided with concave or other suitable seats 8 on the inner surfaces thereof toward the slot 5, upon which tubes 9 are seated.
  • the tubes 9 are slotted at intervals, as indicated at 10, to receive screws 11 therethrough and through slots 12 in the bar 6.
  • the screws 11 extend into rods 13 which are provided with drilled holes for receiving the ends of the screws 11.
  • the screws 11 and rods 13 form means for clamping the tubes 9 in place at opposite edges of the slot 5 in position to bear upon the undersurface of the bottom reach of the felt I when the felt conditioner is used in the position shown in FIG. 1.
  • the parts 4, 6 and 13 may be formed of brass or stainless steel, or other suitable material.
  • the tubes 9 should be formed of a suitable ceramic material that is hard and dense, such as dense silicon carbide.
  • a high density self-bonded silicon carbide will reduce to a minimum wear of the felt, as well as the drag load of the felt over the wear surface, thereby lowering the power requirements for moving the felt.
  • the dense ceramic material may be polished, if required, and will have a low coefiicient of friction on the felt. It will also reduce the danger of cutting or scraping the felt.
  • Monel metal may be used for the tubes 9, although it is soft and has poor wear characteristics as compared with dense silicon carbide, which is required.
  • the hard, dense, metal-bonded ceramics such as chromium-bonded alumina, and hard, dense impregnated ceramics, such as zirconium diboride impregnated with molybdenum disilicide.
  • Other specific hard, dense ceramics which can be used include titanium carbide, boron carbide, tungsten carbide, zirconium carbide, titanium boride, zirconium boride, titanium nitride, zirconia, alumina, nitride-bonded silicon carbide, metal-bonded titanium carbide, and metal-bonded tungsten carbide.
  • rods 13 Other materials may be used for the rods 13, such as Teflon. These rods should have sufficient strength to reinforce as well as to clamp the tubes 9 in place during the operation in connection with the felt.
  • a suction box having a slot therein, tubular members on opposite sides of the slot in bearing relation with the felt, said tubular members having openings in the walls thereof, clamping members inside the tubular members, and fastenings connected with the suction box and extending through the openings into engagement with the clamping members for holding the tubular members on the suction box.
  • a paper making machine having a forming felt adapted to receive a web thereon, a suction box having a slot therein, tubular members on opposite sides of the slot in bearing relation with the felt, said tubular members having openings in the walls thereof, clamping members inside the tubular members, and fastenings connected with the suction box and extending through the openings into engagement with the clamping members for holding the tubular members on the suction box, each of said tubular members being formed of a dense ceramic material.

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  • Paper (AREA)
  • Ceramic Products (AREA)
US484371A 1965-09-01 1965-09-01 Felt cleaner for paper making machine Expired - Lifetime US3420736A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US48437165A 1965-09-01 1965-09-01

Publications (1)

Publication Number Publication Date
US3420736A true US3420736A (en) 1969-01-07

Family

ID=23923886

Family Applications (1)

Application Number Title Priority Date Filing Date
US484371A Expired - Lifetime US3420736A (en) 1965-09-01 1965-09-01 Felt cleaner for paper making machine

Country Status (5)

Country Link
US (1) US3420736A (cs)
DE (1) DE1511205B2 (cs)
GB (1) GB1116789A (cs)
NL (1) NL6612272A (cs)
SE (1) SE375568B (cs)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3836428A (en) * 1972-08-25 1974-09-17 Albany Int Corp Adjustable slot suction box cover
US4055459A (en) * 1976-06-28 1977-10-25 Jwi Ltd. Method and apparatus for preventing the adherence of polarized foreign particles to paper machine components
US4067770A (en) * 1975-01-03 1978-01-10 Plasma & Flame Coatings Ltd. Conditioner box guides
US5147508A (en) * 1991-10-11 1992-09-15 The Nash Engineering Company Suction box covers for cleaning papermaking machine felts
US5314585A (en) * 1993-05-10 1994-05-24 Champion International Corporation Low shear Uhle box
US5776311A (en) * 1996-09-03 1998-07-07 The Procter & Gamble Company Vacuum apparatus having transitional area for controlling the rate of application of vacuum in a through air drying papermaking process
EP0860546A3 (de) * 1996-11-26 1999-06-09 Voith Sulzer Papiertechnik Patent GmbH Saugvorrichtung und Pressenpartie einer Papiermaschine sowie Verfahren zum Besaugen eines Bahnabschnitts einer Papiermaschine

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB638618A (en) * 1948-01-09 1950-06-14 Gilbert John Scofield Improvements in and relating to suction boxes for paper-making machines and the like
US3067816A (en) * 1960-01-20 1962-12-11 Carborundum Co Apparatus and process for the manufacture of paper

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB638618A (en) * 1948-01-09 1950-06-14 Gilbert John Scofield Improvements in and relating to suction boxes for paper-making machines and the like
US3067816A (en) * 1960-01-20 1962-12-11 Carborundum Co Apparatus and process for the manufacture of paper

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3836428A (en) * 1972-08-25 1974-09-17 Albany Int Corp Adjustable slot suction box cover
US4067770A (en) * 1975-01-03 1978-01-10 Plasma & Flame Coatings Ltd. Conditioner box guides
US4055459A (en) * 1976-06-28 1977-10-25 Jwi Ltd. Method and apparatus for preventing the adherence of polarized foreign particles to paper machine components
US5147508A (en) * 1991-10-11 1992-09-15 The Nash Engineering Company Suction box covers for cleaning papermaking machine felts
US5314585A (en) * 1993-05-10 1994-05-24 Champion International Corporation Low shear Uhle box
US5776311A (en) * 1996-09-03 1998-07-07 The Procter & Gamble Company Vacuum apparatus having transitional area for controlling the rate of application of vacuum in a through air drying papermaking process
EP0860546A3 (de) * 1996-11-26 1999-06-09 Voith Sulzer Papiertechnik Patent GmbH Saugvorrichtung und Pressenpartie einer Papiermaschine sowie Verfahren zum Besaugen eines Bahnabschnitts einer Papiermaschine
US6027613A (en) * 1996-11-26 2000-02-22 Voith Sulzer Papiermaschinen Gmbh Suction device with release mechanism for a fabric web section of a paper machine

Also Published As

Publication number Publication date
GB1116789A (en) 1968-06-12
NL6612272A (cs) 1967-03-02
SE375568B (cs) 1975-04-21
DE1511205B2 (de) 1977-02-24
DE1511205A1 (de) 1969-10-30

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Legal Events

Date Code Title Description
AS Assignment

Owner name: KENNECOTT CORPORATION

Free format text: MERGER;ASSIGNORS:BEAR CREEK MINING COMPANY;BEAR TOOTH MINING COMPANY;CARBORUNDUM COMPANY THE;AND OTHERS;REEL/FRAME:003961/0672

Effective date: 19801230