US3032100A - Device for even spreading of water onto a running web, particularly a cellulosic pulp web - Google Patents

Device for even spreading of water onto a running web, particularly a cellulosic pulp web Download PDF

Info

Publication number
US3032100A
US3032100A US862528A US86252859A US3032100A US 3032100 A US3032100 A US 3032100A US 862528 A US862528 A US 862528A US 86252859 A US86252859 A US 86252859A US 3032100 A US3032100 A US 3032100A
Authority
US
United States
Prior art keywords
water
web
casing
apertures
cellulosic pulp
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
US862528A
Inventor
Schibbye Lauritz Benedictus
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Application granted granted Critical
Publication of US3032100A publication Critical patent/US3032100A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
    • D21F9/00—Complete machines for making continuous webs of paper
    • D21F9/02—Complete machines for making continuous webs of paper of the Fourdrinier type
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21C—PRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE SUBSTANCES FROM CELLULOSE-CONTAINING MATERIALS; REGENERATION OF PULPING LIQUORS; APPARATUS THEREFOR
    • D21C9/00—After-treatment of cellulose pulp, e.g. of wood pulp, or cotton linters ; Treatment of dilute or dewatered pulp or process improvement taking place after obtaining the raw cellulosic material and not provided for elsewhere
    • D21C9/02—Washing ; Displacing cooking or pulp-treating liquors contained in the pulp by fluids, e.g. wash water or other pulp-treating agents
    • D21C9/06—Washing ; Displacing cooking or pulp-treating liquors contained in the pulp by fluids, e.g. wash water or other pulp-treating agents in filters ; Washing of concentrated pulp, e.g. pulp mats, on filtering surfaces
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
    • D21F9/00—Complete machines for making continuous webs of paper
    • D21F9/04—Complete machines for making continuous webs of paper of the cylinder type

Definitions

  • the present invention relates to a device for even spreading of water onto a running web, particularly a cellulosic pulp web on a rotary sieve drum, in which device the water is spread in the shape of an even thin film and in which the above-mentioned object of being able to vary the water quantity supplied, is fulfilled.
  • a device which comprises a casing extending across the web and having at its bottom one or more rows of ejection apertures outside of which an essentially horizontal guide plate for the ejected Water is arranged, said object is obtained essentially by the provision within the casing and in cooperation with the ejection apertures, of a memher having corresponding apertures and being displaceable in such a manner that the ejection apertures can be shut off to a desired extent in order to control the water quantity ejected.
  • FIG. 1 shows a front elevational view of a first embodiment, taken in a direction opposite to the flow direction of the water.
  • FIG. 2 is a side elevational and crosssectional view taken along the line IIII in FIG. 1.
  • FIG. 3 shows a part of FIG. 2 on an enlarged scale.
  • FIG. 4 is a side elevational and cross-sectional view of a second embodiment of the device according to the invention.
  • the Water spreading device shown in FIGS. 1 to 3 comprises a comparatively narrow and deep casing 11 having vertical side walls and a horizontal bottom.
  • the device should be used for the spreading of water onto a pulp layer carried upon the surface of a foraminous sieve drum of a rotary cellulose filter, said casing is placed above the cylindrical sieve drum 13, FIG. 2, of the filter, the length direction of the casing being parallel to the shaft of the sieve drum.
  • the casing 11 extends along the entire axial'length of the sieve drum in order to spread water over the whole width of the pulp web.
  • a filter cloth 15 taking up a major part of the space of the casing is suspended between two frames 17 and 19, of which the former 17 rests upon ribs 21 attached to the inside of the casing, whereas the other 19 is freely suspended.
  • the filter cloth 15 also has a horizontal bottom part held by the frame 19 and therefore forms a bag closed at the bottom.
  • Water is supplied to the casing through two tubes 23, 25 attached to the upper longitudinal edges of the casing and being provided with spray apertures 27 evenly distributed over the length of the tubes.
  • a square opening Provided in one end wall of the casing is a square opening, the lower edge 29 of which forms an overflow and to which a drain passage 31 is connected.
  • the bottom of the casing 11 merges along one of its longer side walls, into a guide plate 33 which near the casing is horizontal and farther away forms a shallow cylindrically rounded ridge 35 the highest point of which is situated at a somewhat higher level than the horizontal part of the guide plate.
  • Attached to the upper side of said guide plate is a great number of vertically extending, substantially parallel guide vanes 37 which are positioned at right angles to the guide plate 33 as well as to the front wall of the casing 11.
  • the vanes 37 are partly covered by a horizontal lid 39 located close to the wall of the casing and having its outer edge slitted and the tongues thus formed bent down between the vanes 37.
  • a closed chamber 43 from which water can be discharged merely by passing below the tongues 41. From there by means of the vanes the water is guided away from the casing 11 at square angles to the same and drops over the outer edge of the ridge as a thin continuous film.
  • the water is supplied to said chamber by a horizontal row of ejection apertures 45 provided in the lower part of the front wall of the casing.
  • a slide member 51 Displaceably guided by means of ribs 47, 49 along the inner side of the casing is a slide member 51 carrying a plate 53. Said plate is held in engagement with the part of the wall of the casing in which the apertures 45 are located, and the plate is provided with apertures which in a certain position of the slide 51 coincide with the apertures 45 so that the latter are left fully open.
  • the slide 51 is displaceable by means of an adjustment screw 57 and by actuation thereof the apertures 55 can be displaced so that they more or less cover the apertures 45. In said manner the quantity of water spread over the sieve drum can easily be controlled.
  • a very even distribution of the water in the axial direction of the sieve drum 13 is obtained by the resistance offeredto the water flow when passing the filter cloth 15, the apertures 45 and the passage below the tongues 41. Possible cross-currents are eliminated by the guide vanes 37.
  • the embodiment according to FIG. 4 is composed of three units, each one of which essentially corresponds to the design shown in FIGS. 1 to 3. Said units are built together in a step-like arrangement. A drain passage 31 is required merely for the lowermost unit, whereas the water level of the upper units is determined by the overflow edges 55 and 57.
  • ejection apertures may be arranged, in addition to the apertures 45 in the side wall or instead thereof, in the bottom of the casing, and the apertures may be arranged in several parallel rows or in some other pattern.
  • the apertures 45 and 55 may be circular or made as narrow slits.
  • a device for evenly spreading water in the form of a thin film onto a running celluosic pulp web carried by a rotary sieve drum or the like comprising: casing means extending across the web and having at least one row of bottom ejection apertures; control means cooperatively mounted with said casing means having corresponding apertures for cooperation with said first-mentioned ejection apertures, said control means being displaceable along said casing means with respect to said ejection apertures to control the quantity of water ejected; and generally horizontal guide plate means mounted adjacent said ejection apertures to control the path of the water leaving said casing means from said apertures.
  • a device for evenly spreading water in the form of a thin film onto a running cellulosic pulp web carried by a rotary sieve drum or the like comprising: casing means extending across the Web and having at least one row of bottom ejection apertures; and generally horizontal guide plate means mounted adjacent said ejection apertures to control the path of water leaving said casing means from said apertures, said guide plate means including a plurality or" generally parallel guide vanes arranged therealong in closely spaced relationship to control the direction of flow of the Water leaving said apertures.
  • a device for evenly spreading Water in the form of a thin film onto a running cellulosic pulp web carried by a rotary sieve drum or the like comprising: casing means extending across the Web and having at least one row of bottom ejection apertures; water inlet means communieating with said casing means; a sieve cloth disposed in References Cited in the file of this patent UNITED STATES PATENTS 2,673,763 Dunn Mar. 30, 1954 2,784,558 Hohnstein Mar. 12, 1957 2,864,406 Schewel Dec. 16, 1958

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Wood Science & Technology (AREA)
  • Paper (AREA)

Description

y 1962 B. SCHIBBYE 3,032,100
DEVICE FOR EVEN SPREADING OF WATER ONTO A RUNNING WEB, PARTICULARLY A CELLULOSIC PULP WEB Filed Dec. 29, 1959 2 Sheets-Sheet l y 1,1962 B. SCHIBBYE 3,032,100
DEVICE FOR EVEN SPREADING OF WATER ONTO A RUNNING WEB, PARTICULARLY A CELLULOSIC PULP WEB Filed Dec. 29, 1959 2 Sheets-Sheet 2 DEVICE FOR EVEN SPREADING OF WATER ONTO A RUNNING WEB, PARTICULARLY A CELLU- LOSIC PULP WEB Lauritz Benedictus Schibbye, Langgatan 19, Sundsvali, Sweden Filed Dec. 29, 1959, Ser. No. 862,528 Claims priority, application Sweden Dec. 31, 1958 4 Claims. (Cl. 162--308) Particularly in the cellulose industry there is a need for spreading Water evenly onto a running web, e.g. in order to supply warm water to a paper web being formed on the wire of a Fourdrinier paper machine or in order to supply wash water to a pulp web carried on the surface of a rotary sieve drum. It is essential that the water is supplied as carefully as possible in order to avoid unevenness of the web and it is an object of the invention to be able to vary the amount of the water supplied while maintaining the even distribution thereof over the entire width of the web.
The present invention relates to a device for even spreading of water onto a running web, particularly a cellulosic pulp web on a rotary sieve drum, in which device the water is spread in the shape of an even thin film and in which the above-mentioned object of being able to vary the water quantity supplied, is fulfilled. In such a device which comprises a casing extending across the web and having at its bottom one or more rows of ejection apertures outside of which an essentially horizontal guide plate for the ejected Water is arranged, said object is obtained essentially by the provision within the casing and in cooperation with the ejection apertures, of a memher having corresponding apertures and being displaceable in such a manner that the ejection apertures can be shut off to a desired extent in order to control the water quantity ejected.
Two preferred embodiments of the device according to the invention are shown in the accompanying drawings. FIG. 1 shows a front elevational view of a first embodiment, taken in a direction opposite to the flow direction of the water. FIG. 2 is a side elevational and crosssectional view taken along the line IIII in FIG. 1. FIG. 3 shows a part of FIG. 2 on an enlarged scale. FIG. 4 is a side elevational and cross-sectional view of a second embodiment of the device according to the invention.
The Water spreading device shown in FIGS. 1 to 3 comprises a comparatively narrow and deep casing 11 having vertical side walls and a horizontal bottom. When, as is assumed here, the device should be used for the spreading of water onto a pulp layer carried upon the surface of a foraminous sieve drum of a rotary cellulose filter, said casing is placed above the cylindrical sieve drum 13, FIG. 2, of the filter, the length direction of the casing being parallel to the shaft of the sieve drum. The casing 11 extends along the entire axial'length of the sieve drum in order to spread water over the whole width of the pulp web. A filter cloth 15 taking up a major part of the space of the casing is suspended between two frames 17 and 19, of which the former 17 rests upon ribs 21 attached to the inside of the casing, whereas the other 19 is freely suspended. The filter cloth 15 also has a horizontal bottom part held by the frame 19 and therefore forms a bag closed at the bottom. Water is supplied to the casing through two tubes 23, 25 attached to the upper longitudinal edges of the casing and being provided with spray apertures 27 evenly distributed over the length of the tubes. Provided in one end wall of the casing is a square opening, the lower edge 29 of which forms an overflow and to which a drain passage 31 is connected.
States Patent The bottom of the casing 11 merges along one of its longer side walls, into a guide plate 33 which near the casing is horizontal and farther away forms a shallow cylindrically rounded ridge 35 the highest point of which is situated at a somewhat higher level than the horizontal part of the guide plate. Attached to the upper side of said guide plate is a great number of vertically extending, substantially parallel guide vanes 37 which are positioned at right angles to the guide plate 33 as well as to the front wall of the casing 11. The vanes 37 are partly covered by a horizontal lid 39 located close to the wall of the casing and having its outer edge slitted and the tongues thus formed bent down between the vanes 37. Thus, there is formed between the parts 39, 41 and 33 a closed chamber 43 from which water can be discharged merely by passing below the tongues 41. From there by means of the vanes the water is guided away from the casing 11 at square angles to the same and drops over the outer edge of the ridge as a thin continuous film.
The water is supplied to said chamber by a horizontal row of ejection apertures 45 provided in the lower part of the front wall of the casing. Displaceably guided by means of ribs 47, 49 along the inner side of the casing is a slide member 51 carrying a plate 53. Said plate is held in engagement with the part of the wall of the casing in which the apertures 45 are located, and the plate is provided with apertures which in a certain position of the slide 51 coincide with the apertures 45 so that the latter are left fully open. The slide 51 is displaceable by means of an adjustment screw 57 and by actuation thereof the apertures 55 can be displaced so that they more or less cover the apertures 45. In said manner the quantity of water spread over the sieve drum can easily be controlled. The quantity of water supplied through the tubes 23, 25 which gets superflows when the ejection apertures 45 are wholly or partly covered, is discharged through the drain passage 31. A very even distribution of the water in the axial direction of the sieve drum 13 is obtained by the resistance offeredto the water flow when passing the filter cloth 15, the apertures 45 and the passage below the tongues 41. Possible cross-currents are eliminated by the guide vanes 37.
The embodiment according to FIG. 4 is composed of three units, each one of which essentially corresponds to the design shown in FIGS. 1 to 3. Said units are built together in a step-like arrangement. A drain passage 31 is required merely for the lowermost unit, whereas the water level of the upper units is determined by the overflow edges 55 and 57.
Ofcourse, the embodiments above described may be modified as to their details. Thus, ejection apertures may be arranged, in addition to the apertures 45 in the side wall or instead thereof, in the bottom of the casing, and the apertures may be arranged in several parallel rows or in some other pattern. The apertures 45 and 55 may be circular or made as narrow slits.
I claim:
1. A device for evenly spreading water in the form of a thin film onto a running celluosic pulp web carried by a rotary sieve drum or the like, comprising: casing means extending across the web and having at least one row of bottom ejection apertures; control means cooperatively mounted with said casing means having corresponding apertures for cooperation with said first-mentioned ejection apertures, said control means being displaceable along said casing means with respect to said ejection apertures to control the quantity of water ejected; and generally horizontal guide plate means mounted adjacent said ejection apertures to control the path of the water leaving said casing means from said apertures.
2. A device for evenly spreading water in the form of a thin film onto a running cellulosic pulp web carried by a rotary sieve drum or the like, comprising: casing means extending across the Web and having at least one row of bottom ejection apertures; and generally horizontal guide plate means mounted adjacent said ejection apertures to control the path of water leaving said casing means from said apertures, said guide plate means including a plurality or" generally parallel guide vanes arranged therealong in closely spaced relationship to control the direction of flow of the Water leaving said apertures.
3. A device for evenly spreading Water in the form of a thin film onto a running cellulosic pulp web carried by a rotary sieve drum or the like, comprising: casing means extending across the Web and having at least one row of bottom ejection apertures; water inlet means communieating with said casing means; a sieve cloth disposed in References Cited in the file of this patent UNITED STATES PATENTS 2,673,763 Dunn Mar. 30, 1954 2,784,558 Hohnstein Mar. 12, 1957 2,864,406 Schewel Dec. 16, 1958
US862528A 1958-12-31 1959-12-29 Device for even spreading of water onto a running web, particularly a cellulosic pulp web Expired - Lifetime US3032100A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE3032100X 1958-12-31

Publications (1)

Publication Number Publication Date
US3032100A true US3032100A (en) 1962-05-01

Family

ID=20428272

Family Applications (1)

Application Number Title Priority Date Filing Date
US862528A Expired - Lifetime US3032100A (en) 1958-12-31 1959-12-29 Device for even spreading of water onto a running web, particularly a cellulosic pulp web

Country Status (1)

Country Link
US (1) US3032100A (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3218227A (en) * 1963-04-22 1965-11-16 Beloit Corp Knockoff shower for a fourdrinier machine
US3459633A (en) * 1967-05-04 1969-08-05 Shannon V West Felt conditioner control system
US4491501A (en) * 1982-12-08 1985-01-01 Westvaco Corporation Method for washing a fibrous particle mat with wash liquor having an impact energy sufficient to disrupt and rearrange the interstitial pore matrix
US4505137A (en) * 1982-12-08 1985-03-19 Westvaco Corporation Apparatus for washing paper pulp
US4889597A (en) * 1986-06-27 1989-12-26 The Procter & Gamble Cellulose Company Process for making wet-laid structures containing individualized stiffened fibers
US4951879A (en) * 1988-11-23 1990-08-28 Fay James N Liquid distribution device

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2673763A (en) * 1953-01-26 1954-03-30 Int Paper Canada Shower for pulp washers
US2784558A (en) * 1956-05-31 1957-03-12 Paul J Hohnstein Gate or valve for an irrigation pipe line
US2864406A (en) * 1954-09-01 1958-12-16 Schewel Abe Exhaust deflector

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2673763A (en) * 1953-01-26 1954-03-30 Int Paper Canada Shower for pulp washers
US2864406A (en) * 1954-09-01 1958-12-16 Schewel Abe Exhaust deflector
US2784558A (en) * 1956-05-31 1957-03-12 Paul J Hohnstein Gate or valve for an irrigation pipe line

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3218227A (en) * 1963-04-22 1965-11-16 Beloit Corp Knockoff shower for a fourdrinier machine
US3459633A (en) * 1967-05-04 1969-08-05 Shannon V West Felt conditioner control system
US4491501A (en) * 1982-12-08 1985-01-01 Westvaco Corporation Method for washing a fibrous particle mat with wash liquor having an impact energy sufficient to disrupt and rearrange the interstitial pore matrix
US4505137A (en) * 1982-12-08 1985-03-19 Westvaco Corporation Apparatus for washing paper pulp
US4889597A (en) * 1986-06-27 1989-12-26 The Procter & Gamble Cellulose Company Process for making wet-laid structures containing individualized stiffened fibers
US4951879A (en) * 1988-11-23 1990-08-28 Fay James N Liquid distribution device

Similar Documents

Publication Publication Date Title
ES474880A1 (en) Apparatus for the production of a fibrous web
US3032100A (en) Device for even spreading of water onto a running web, particularly a cellulosic pulp web
DE102006023952B4 (en) clothes dryer
US2548108A (en) Flow distributor
KR950001000A (en) Fully automatic washing machine
US2487202A (en) Suction box cover
US3563854A (en) Sealing arrangement for a breast box of a papermaking machine
US3764465A (en) Suction box and baffle for fourdrinier type of papermaking machine
US1775905A (en) Stock inlet for paper machines
US1987962A (en) Spray tube
US2993538A (en) Front wall for a stock head box
US951183A (en) Paper-making machine.
US2528189A (en) Apparatus for the manufacture of paper
US2970938A (en) Control of stock supply in paper making machines
DE4028126A1 (en) SLOT NOZZLE, ESPECIALLY FOR A DOUBLE SCREEN FORMER
DE2149289C3 (en) Clothes dryer
DE2148127C3 (en) Clothes dryer
DE2147303C3 (en) Clothes dryer
DE2214618B2 (en) Water cooled condenser for domestic linen dryer - has sectionalised cover forming downwards inclined drip and blown surfaces
US1947338A (en) Drier
GB841964A (en) Improvements in machines for making paper and the like
US2244746A (en) Papermaking machine
US1307750A (en) Process of mantis actubing felts
US409201A (en) Paper-making machine
DE2214621C2 (en) Laundry dryer air dehumidifier - has air passed over trays of water overlapping and vertically in housing