US3913838A - Clog-proof liquid distribution device - Google Patents

Clog-proof liquid distribution device Download PDF

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Publication number
US3913838A
US3913838A US500015A US50001574A US3913838A US 3913838 A US3913838 A US 3913838A US 500015 A US500015 A US 500015A US 50001574 A US50001574 A US 50001574A US 3913838 A US3913838 A US 3913838A
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arm
liquid
container
shaft
nozzles
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Expired - Lifetime
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US500015A
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Johan Christoffer Fred Richter
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Xerox Corp
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Xerox Corp
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B3/00—Spraying or sprinkling apparatus with moving outlet elements or moving deflecting elements
    • B05B3/02—Spraying or sprinkling apparatus with moving outlet elements or moving deflecting elements with rotating elements
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21B—FIBROUS RAW MATERIALS OR THEIR MECHANICAL TREATMENT
    • D21B1/00—Fibrous raw materials or their mechanical treatment
    • D21B1/04—Fibrous raw materials or their mechanical treatment by dividing raw materials into small particles, e.g. fibres
    • D21B1/12—Fibrous raw materials or their mechanical treatment by dividing raw materials into small particles, e.g. fibres by wet methods, by the use of steam
    • D21B1/30—Defibrating by other means
    • D21B1/34—Kneading or mixing; Pulpers
    • D21B1/342—Mixing apparatus
    • 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
    • D21C7/00—Digesters

Definitions

  • ABSTRACT A clog-proof liquid distribution device for use in a mixing container for supplying treatment liquid to a comminuted material flowing through the container.
  • the device is disposed for axial rotation in a substantially cylindrical container so that the hollow supply shaft extends longitudinally in the container and at least one arm extends radially outward therefrom, transverse to the direction of flow of the material.
  • the arm contains a chamber which receives the liquid from the hollow shaft and distributes it through a plurality of orifices to a plurality of wedge-shaped nozzles fanning outward towards the rear of the arm in the direction opposite the direction of rotation of the arm.
  • the orifices can be varied in size along the arm so as to permit varying amounts of liquid to be supplied to the material to effect substantially uniform treatment thereof.
  • the present invention relates to a device for distribution of liquid preferably over the cross-section of a standing, substantially circular container, through which finely comminuted; material, e.g. cellulose pulp, untreated or more or less cooked chips, straw or similar material, is moving substantially continuously in the lengthwise direction of the container, to which finely comminuted material it is desirable for dilution, wash ing or for other treatment, e.g. of chemical type,.to add a liquid quantity evenly distributed over the crosssection of the container.
  • material e.g. cellulose pulp, untreated or more or less cooked chips, straw or similar material
  • the present invention has as a main object to provide such a device by suitable construction and design of the arm and its hollow parts.
  • the distribution of liquid is accomplished mainly by distributing the liquid, which is to be added lengthwise:
  • the design must be such that at renewed starting the liquid passages will not remain blocked and the liquid must easily be able to clean out the material which has come into the liquid passages. This is accomplished by the present invention mainly by having the nozzle openings with a conical.
  • FIG. 1 shows a side elevation in cross-section taken along line BB of FIG. 2;
  • FIG. 2 shows a top plan view in partial cross-section of the preferred embodiment
  • FIG. 3 shows an enlarged cross-section of the preferred embodiment taken along line AA of FIG. 2.
  • the distribution device shown on the drawing consists of an arm 20 which e. g. by means of welding, is fastened to a rotatable and driven shaft provided with at least one cavity 11.
  • the shaft can be considered to rotate centrally in a mainly cylindrical container (not shown) and having its axis of rotation disposed in the lengthwise direction of the container.
  • the container can be completely or partly filled with finely comminuted material suspended in any liquid, e.g. cellulose pulp, and be either open or closed.
  • the contents of the container can therefore be in a phase of treatment under pressure, a vacuum or at atmospheric pressure.
  • the device is primarily intended for use during continuous conditions, i.e., when finely commi- 2 through the material in the container, can, as'FlGl 3 indicates, preferably have a shape which givessmall flow .resistance.
  • the arm 20 consists in its radial direction mainly of a long, closed chamber 21, into which liquid from the cavity 11 of the shaft 10 flows through at least one opening 12 in the shaft wall.
  • a number of holes which can vary, in size and number and which in FIG.
  • panding cross-section both in heightwise and in sidewise direction. If for some reason, e.g. during a stop, finely comminuted material should penetrateinto the nozzle-shaped chambers 40, 41, 42, 43, a plug is easily built up due to the inwards decreasing cross-section which on the other hand later on during start up due to the outwards increasing cross-section of the walls is easily pushed out due to the flow of liquid.
  • the holes 22, 23, 24, 25 are, with regard to number and size, arranged so that the total cross-section of each nozzle is increasing in proportion to the nozzle distance from the container center in such a way that each nozzle shaped chamber 40, 41, 42 or 43 receives more liquid the greater distance it is situated from the rotating center of the shaft 10. In this way, uniform distribution of liquid in the container to the comminuted material is accomplished.
  • the fluid is ejected from each of the nozzle shaped chambers 40, 41, 42 and 43 at a velocity equal to the tangential velocity of each nozzle as it is rotated in the container but in the opposite direction of rotation of the chambers, so that the fluid is substantially at rest when it contacts the comminuted material. This guarantees the best possible even treatment of the material with the fluid.
  • the height of the nozzle openings is dimensioned so that during one revolution of the shaft the nozzles leave behind a liquid layer mainly of the same thickness as the height of the nozzles and which for each complete revolution of the shaft, and thereby also of the arm, constitutes a total quantity of liquid which corresponds to the nominal quantity which it is desired to add to the forward flowing, finely comminuted material during the time it takes for the shaft to rotate one revolution.
  • distribution device can be varied. For example, more distribution arms be used in the same container for the same or different liquids, different temperatures etc. Furthermore, different liquids can, by means of the same arm, be distributed at different radii by adding the liquids through separate lines of addition through the shaft and into the arm.
  • An anti-clog device for even distribution of treatment liquid over the cross-section of a standing, mainly circular container, through which finely comminuted material can be moved in the lengthwise direction of the container, said device consisting of at least one arm with nozzle openings arranged with partly streamlined cross-section, which arm is fastened to a driven, rotating shaft, through which liquid can be added, the liquid flows through an opening in the shaft into a chamber in the lengthwise direction of the arm, which chamber is built with a mainly horizontal top part provided with orifices, which the orifices open into a plurality of nozzles which widen toward the back part of the arm in both the widthwise and heightwise direction where each nozzle is ended in a narrow opening of relatively great width and small height and where two adjacent nozzles have openings located close to each other, so that the whole back side of the arm is substantially made up of nozzle openings.
  • each nozzle is connected with the chamber in the lengthwise direction of the arm through one or more orifices with a cross-sectional area of a magnitude in proportion to the respective nozzle distance from the shaft, whereby each portion of the comminuted material flowing through the container will be allotted approximately the same quantity of treatment liquid by the nozzles independently of the distance of the portion from the container shaft.
  • a device wherein the orifices cross-sectional areas are adjusted so that the liquid is leaving the nozzle openings with a velocity which approximately corresponds to the average tangential velocity of the respective nozzle opening but directed in the opposite direction.
  • the nozzle openings have a height so that at one revolution of the shaft in the container the nozzles will leave behind a layer of liquid with the same thickness as the height of the nozzles, whereby the nozzles substantially cover the whole cross-section of the container and provide a total quantity of liquid corresponding to the nominal quantity it is desired to add to the finely comminuted material during the time it takes for the shaft to rotate one revolution.
  • Heading Page, Block [73] change "Xerox Corporation, Stamford, Conn.” to -Kamyr Aktiebolag, Karlstad, Sweden. Heading Page, Column 2, change "Attorney, Agent, or Firm Robert J. Bird” to read --Attorney, Agent, or Firm CUSHMAN, DARBY & CUSHMAN- Signed and gealed this twenty-seventh D ay Of April 1 976 [SEAL] Attest:

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  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Wood Science & Technology (AREA)
  • Mechanical Engineering (AREA)
  • Nozzles (AREA)
  • Feeding, Discharge, Calcimining, Fusing, And Gas-Generation Devices (AREA)
  • Paper (AREA)
  • Mixers Of The Rotary Stirring Type (AREA)
  • Treatment Of Fiber Materials (AREA)

Abstract

A clog-proof liquid distribution device for use in a mixing container for supplying treatment liquid to a comminuted material flowing through the container. The device is disposed for axial rotation in a substantially cylindrical container so that the hollow supply shaft extends longitudinally in the container and at least one arm extends radially outward therefrom, transverse to the direction of flow of the material. The arm contains a chamber which receives the liquid from the hollow shaft and distributes it through a plurality of orifices to a plurality of wedge-shaped nozzles fanning outward towards the rear of the arm in the direction opposite the direction of rotation of the arm. The orifices can be varied in size along the arm so as to permit varying amounts of liquid to be supplied to the material to effect substantially uniform treatment thereof.

Description

[ Oct. 21, 1975 CLOG-PROOF LIQUID DISTRIBUTION DEVICE [75] Inventor: Johan Christoffer Frederik Carl Richter, St. Jean Cap Ferrat, France [73] Assignee: Xerox Corporation, Stamford,
Conn.
22 Filed: Aug. 23, 1974 21 Appl. No.: 500,015
[30] Foreign Application Priority Data Nelson 239/246 X Johnson 239/225 Primary ExaminerLloyd L. King Attorney, Agent, or FirmRobert J. Bird [5 7] ABSTRACT A clog-proof liquid distribution device for use in a mixing container for supplying treatment liquid to a comminuted material flowing through the container. The device is disposed for axial rotation in a substantially cylindrical container so that the hollow supply shaft extends longitudinally in the container and at least one arm extends radially outward therefrom, transverse to the direction of flow of the material. The arm contains a chamber which receives the liquid from the hollow shaft and distributes it through a plurality of orifices to a plurality of wedge-shaped nozzles fanning outward towards the rear of the arm in the direction opposite the direction of rotation of the arm. The orifices can be varied in size along the arm so as to permit varying amounts of liquid to be supplied to the material to effect substantially uniform treatment thereof.
4 Claims, 3 Drawing Figures U.S. Patant Oct. 21, 1975 3,913,838
CLOG-PROOF LIQUID DISTRIBUTION; DEVICE The present invention relates to a device for distribution of liquid preferably over the cross-section of a standing, substantially circular container, through which finely comminuted; material, e.g. cellulose pulp, untreated or more or less cooked chips, straw or similar material, is moving substantially continuously in the lengthwise direction of the container, to which finely comminuted material it is desirable for dilution, wash ing or for other treatment, e.g. of chemical type,.to add a liquid quantity evenly distributed over the crosssection of the container.
During addition of liquid to finely comminuted material which for example,-take s place by means of the arm 71 in the US. Pat. No. 3,078,703, it is of greatest importance partly that the liquid can be distributed evenly to the material and partly that the construction is such that one has the greatest possible safety .for the finely comminuted material not plugging the liquid outlet openings. The present invention has as a main object to provide such a device by suitable construction and design of the arm and its hollow parts.
The distribution of liquid is accomplished mainly by distributing the liquid, which is to be added lengthwise:
in the device, by means of a number of suitable openings in the inside of the device and that the device has liquid outlet openings of relatively low height and relatively great width. An even distribution of the liquid over the container cross-section is also accomplished by means of the movement of the device through the finely comminuted material.
If the addition of liquid for any reason should stop and finely comminuted material flows into the openings and passageways for the liquid, the design must be such that at renewed starting the liquid passages will not remain blocked and the liquid must easily be able to clean out the material which has come into the liquid passages. This is accomplished by the present invention mainly by having the nozzle openings with a conical.
shape both heightwise and sidewise with the wider end of the openings at the outside.
The preferred embodiment of the invention shall be described in detail with reference to the drawing, in which FIG. 1 shows a side elevation in cross-section taken along line BB of FIG. 2;
FIG. 2 shows a top plan view in partial cross-section of the preferred embodiment; and
FIG. 3 shows an enlarged cross-section of the preferred embodiment taken along line AA of FIG. 2.
The distribution device shown on the drawing consists of an arm 20 which e. g. by means of welding, is fastened to a rotatable and driven shaft provided with at least one cavity 11. The shaft can be considered to rotate centrally in a mainly cylindrical container (not shown) and having its axis of rotation disposed in the lengthwise direction of the container. The container can be completely or partly filled with finely comminuted material suspended in any liquid, e.g. cellulose pulp, and be either open or closed. The contents of the container can therefore be in a phase of treatment under pressure, a vacuum or at atmospheric pressure.
Furthermore, the device is primarily intended for use during continuous conditions, i.e., when finely commi- 2 through the material in the container, can, as'FlGl 3 indicates, preferably have a shape which givessmall flow .resistance. The arm 20 consists in its radial direction mainly of a long, closed chamber 21, into which liquid from the cavity 11 of the shaft 10 flows through at least one opening 12 in the shaft wall. In the upper part of the. closed chamber 21 is arranged a number of holes which can vary, in size and number and which in FIG.
, panding cross-section both in heightwise and in sidewise direction. If for some reason, e.g. during a stop, finely comminuted material should penetrateinto the nozzle- shaped chambers 40, 41, 42, 43, a plug is easily built up due to the inwards decreasing cross-section which on the other hand later on during start up due to the outwards increasing cross-section of the walls is easily pushed out due to the flow of liquid.
The holes 22, 23, 24, 25 are, with regard to number and size, arranged so that the total cross-section of each nozzle is increasing in proportion to the nozzle distance from the container center in such a way that each nozzle shaped chamber 40, 41, 42 or 43 receives more liquid the greater distance it is situated from the rotating center of the shaft 10. In this way, uniform distribution of liquid in the container to the comminuted material is accomplished.
Also, it is preferred that in utilizing the present invention that the fluid is ejected from each of the nozzle shaped chambers 40, 41, 42 and 43 at a velocity equal to the tangential velocity of each nozzle as it is rotated in the container but in the opposite direction of rotation of the chambers, so that the fluid is substantially at rest when it contacts the comminuted material. This guarantees the best possible even treatment of the material with the fluid. Still another advantage is obtained if the height of the nozzle openings is dimensioned so that during one revolution of the shaft the nozzles leave behind a liquid layer mainly of the same thickness as the height of the nozzles and which for each complete revolution of the shaft, and thereby also of the arm, constitutes a total quantity of liquid which corresponds to the nominal quantity which it is desired to add to the forward flowing, finely comminuted material during the time it takes for the shaft to rotate one revolution.
Naturally, the exact design of the above-described distribution device can be varied. For example, more distribution arms be used in the same container for the same or different liquids, different temperatures etc. Furthermore, different liquids can, by means of the same arm, be distributed at different radii by adding the liquids through separate lines of addition through the shaft and into the arm.
The invention is not limited to what has been described above but can be modified within the frame of the following claims.
What is claimed is:
1. An anti-clog device for even distribution of treatment liquid over the cross-section of a standing, mainly circular container, through which finely comminuted material can be moved in the lengthwise direction of the container, said device consisting of at least one arm with nozzle openings arranged with partly streamlined cross-section, which arm is fastened to a driven, rotating shaft, through which liquid can be added, the liquid flows through an opening in the shaft into a chamber in the lengthwise direction of the arm, which chamber is built with a mainly horizontal top part provided with orifices, which the orifices open into a plurality of nozzles which widen toward the back part of the arm in both the widthwise and heightwise direction where each nozzle is ended in a narrow opening of relatively great width and small height and where two adjacent nozzles have openings located close to each other, so that the whole back side of the arm is substantially made up of nozzle openings.
2. A device according to claim 1, wherein each nozzle is connected with the chamber in the lengthwise direction of the arm through one or more orifices with a cross-sectional area of a magnitude in proportion to the respective nozzle distance from the shaft, whereby each portion of the comminuted material flowing through the container will be allotted approximately the same quantity of treatment liquid by the nozzles independently of the distance of the portion from the container shaft.
3. A device according to claim 2, wherein the orifices cross-sectional areas are adjusted so that the liquid is leaving the nozzle openings with a velocity which approximately corresponds to the average tangential velocity of the respective nozzle opening but directed in the opposite direction.
4. A device according to claim 1, wherein the nozzle openings have a height so that at one revolution of the shaft in the container the nozzles will leave behind a layer of liquid with the same thickness as the height of the nozzles, whereby the nozzles substantially cover the whole cross-section of the container and provide a total quantity of liquid corresponding to the nominal quantity it is desired to add to the finely comminuted material during the time it takes for the shaft to rotate one revolution.
UNITED STATES PATENT OFFICE CRTIFICATE OF CORRECTION Patent No. 3,913,838 te October 21, 1975 Inventor(s) I Johan Christoffer Fredrik Carl Richter It is certified that error appears in the above-identified patent and that said Letters Patent are hereby corrected as shown below:
Heading Page, Block [73] change "Xerox Corporation, Stamford, Conn." to -Kamyr Aktiebolag, Karlstad, Sweden. Heading Page, Column 2, change "Attorney, Agent, or Firm Robert J. Bird" to read --Attorney, Agent, or Firm CUSHMAN, DARBY & CUSHMAN- Signed and gealed this twenty-seventh D ay Of April 1 976 [SEAL] Attest:
RUTH C. MASON C. MARSHALL DANN Arresting Officer (unmzis.s-imu'r nj'latenls and Trademarks

Claims (4)

1. An anti-clog device for even distribution of treatment liquid over the cross-section of a standing, mainly circular container, through which finely comminuted material can be moved in the lengthwise direction of the container, said device consisting of at least one arm with nozzle openings arranged with partly streamlined cross-section, which arm is fastened to a driven, rotating shaft, through which liquid can be added, the liquid flows through an opening in the shaft into a chamber in the lengthwise direction of the arm, which chamber is built with a mainly horizontal top part provided with orifices, which the orifices open into a plurality of nozzles which widen toward the back part of the arm in both the widthwise and heightwise direction where each nozzle is ended in a narrow opening of relatively great width and small height and where two adjacent nozzles have openings located close to each other, so that the whole back side of the arm is substantially made up of nozzle openings.
2. A device according to claim 1, wherein each nozzle is connected with the chamber in the lengthwise direction of the arm through one or more orifices with a cross-sectional area of a magnitude in proportion to the respective nozzle distance from the shaft, whereby each portion of the comminuted material flowing through the container will be allotted approximately the same quantity of treatment liquid by the nozzles independently of the distance of the portion from the container shaft.
3. A device according to claim 2, wherein the orifices cross-sectional areas are adjusted so that the liquid is leaving the nozzle openings with a velocity which approximately corresponds to the average tangential velocity of the respective nozzle opening but directed in the opposite direction.
4. A device according to claim 1, wherein the nozzle openings have a height so that at one revolution of the shaft in the container the nozzles will leave behind a layer of liquid with the same thickness as the height of the nozzles, whereby the nozzles substantially cover the whole cross-section of the container and provide a total quantity of liquid corresponding to the nominal quantity it is desired to add to the finely comminuted material during the time it takes for the shaft to rotate one revolution.
US500015A 1973-08-30 1974-08-23 Clog-proof liquid distribution device Expired - Lifetime US3913838A (en)

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SE7311775A SE369322B (en) 1973-08-30 1973-08-30

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JP (1) JPS5726817B2 (en)
BR (1) BR7407226D0 (en)
CA (1) CA1001688A (en)
DE (1) DE2439029A1 (en)
FI (1) FI55228C (en)
FR (1) FR2242156B1 (en)
SE (1) SE369322B (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4276167A (en) * 1979-04-25 1981-06-30 Kamyr Aktiebolag Diffuser arrangements
US4419301A (en) * 1979-10-10 1983-12-06 Dasi Industries, Inc. Method and apparatus for treating fluent materials
US4591463A (en) * 1979-10-10 1986-05-27 Dasi Industries, Inc. Method and apparatus for treating liquid materials
USRE32695E (en) * 1979-04-12 1988-06-14 Dasi Industries, Inc. Method and apparatus for treating fluent materials
US5823428A (en) * 1994-06-23 1998-10-20 The Technology Partnership Plc Liquid spray apparatus and method
US20020129911A1 (en) * 2000-10-16 2002-09-19 Marcoccia Bruno S. Process and configuration for providing external upflow/internal downflow in a continuous digester

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2013096078A1 (en) 2011-12-22 2013-06-27 Avery Dennison Corporation Flexible barrier films containing cyclic olefins

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1717904A (en) * 1926-12-09 1929-06-18 Abernethy Henry Windshield cleaner
US1876389A (en) * 1932-09-06 Windshield heater
US2161865A (en) * 1936-05-29 1939-06-13 Wheeling Steel Corp Burner construction
US2859064A (en) * 1956-04-09 1958-11-04 Seddon C Nelson Rotary square lawn sprinkler
US3737101A (en) * 1971-09-17 1973-06-05 Patent & Dev Inc Power rotated device for dispersing fluids into a gaseous environment

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1876389A (en) * 1932-09-06 Windshield heater
US1717904A (en) * 1926-12-09 1929-06-18 Abernethy Henry Windshield cleaner
US2161865A (en) * 1936-05-29 1939-06-13 Wheeling Steel Corp Burner construction
US2859064A (en) * 1956-04-09 1958-11-04 Seddon C Nelson Rotary square lawn sprinkler
US3737101A (en) * 1971-09-17 1973-06-05 Patent & Dev Inc Power rotated device for dispersing fluids into a gaseous environment

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
USRE32695E (en) * 1979-04-12 1988-06-14 Dasi Industries, Inc. Method and apparatus for treating fluent materials
US4276167A (en) * 1979-04-25 1981-06-30 Kamyr Aktiebolag Diffuser arrangements
EP0052382A1 (en) * 1979-04-25 1982-05-26 Kamyr, Ab Diffuser arrangements
US4419301A (en) * 1979-10-10 1983-12-06 Dasi Industries, Inc. Method and apparatus for treating fluent materials
US4591463A (en) * 1979-10-10 1986-05-27 Dasi Industries, Inc. Method and apparatus for treating liquid materials
US5823428A (en) * 1994-06-23 1998-10-20 The Technology Partnership Plc Liquid spray apparatus and method
US20020129911A1 (en) * 2000-10-16 2002-09-19 Marcoccia Bruno S. Process and configuration for providing external upflow/internal downflow in a continuous digester

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Publication number Publication date
FR2242156B1 (en) 1978-09-15
FR2242156A1 (en) 1975-03-28
FI55228C (en) 1979-06-11
BR7407226D0 (en) 1975-09-09
SE369322B (en) 1974-08-19
JPS5051468A (en) 1975-05-08
JPS5726817B2 (en) 1982-06-07
FI237874A (en) 1975-03-01
FI55228B (en) 1979-02-28
CA1001688A (en) 1976-12-14
DE2439029A1 (en) 1975-03-20

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