US3730079A - Variable nip press having rolls maintained on parallel axes - Google Patents
Variable nip press having rolls maintained on parallel axes Download PDFInfo
- Publication number
- US3730079A US3730079A US00155441A US3730079DA US3730079A US 3730079 A US3730079 A US 3730079A US 00155441 A US00155441 A US 00155441A US 3730079D A US3730079D A US 3730079DA US 3730079 A US3730079 A US 3730079A
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- US
- United States
- Prior art keywords
- press roll
- press
- link
- movable
- roll
- 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
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B30—PRESSES
- B30B—PRESSES IN GENERAL
- B30B3/00—Presses characterised by the use of rotary pressing members, e.g. rollers, rings, discs
- B30B3/04—Presses characterised by the use of rotary pressing members, e.g. rollers, rings, discs co-operating with one another, e.g. with co-operating cones
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B30—PRESSES
- B30B—PRESSES IN GENERAL
- B30B9/00—Presses specially adapted for particular purposes
- B30B9/02—Presses specially adapted for particular purposes for squeezing-out liquid from liquid-containing material, e.g. juice from fruits, oil from oil-containing material
- B30B9/20—Presses specially adapted for particular purposes for squeezing-out liquid from liquid-containing material, e.g. juice from fruits, oil from oil-containing material using rotary pressing members, other than worms or screws, e.g. rollers, rings, discs
Definitions
- ABSTRACT A press comprising a plurality of press rolls rotatable about parallel axes, wherein one of the press rolls is laterally movable relative to the other to vary the cross-section of the therebetween nip. Pressing force is applied to the laterally movable press roll by a plurality of separate link systems actuated by individual fluid pressure operated actuators; and the link systems are interconnected by a torsion bar which causes the link systems to maintain the axes of the press rolls parallel.
- the present invention relates to presses of the type including a plurality of press rolls spaced by a therebetweenv space or nip in which the material is pressed.
- presses of this general type are employed in many different applications including, for example, the pressing of liquid suspensions such as pulp and effluent sludge.
- at least one of the press rolls must be laterally movable relative to the other to vary the cross-section of the nip whereby relatively large foreign and tramp material can pass therethrough, otherwise damage to the expensive press rolls and/or other parts of the press may occur.
- the axes of the press rolls must be maintained parallel to provide uniform dryness of the discharged pressed material, provide a pressed mat of uniform cross-section, permit effective sealing at the ends of the rolls, and insure satisfactory driven rotation of the laterally movable press roll.
- Conventional presses wherein the press rolls are relatively laterally movable are, however, normally unable to maintain the axes of the press rolls parallel.
- the principal object of the present invention is to provide a new and improved press of the type set forth particularly constructed and arranged to maintain the axes of the press rolls parallel while permitting relative lateral movement of the press rolls.
- Another object of the invention is to provide a new and improved press of the type set forth particularly constructed and arranged to reduce frictional effects occuring during its operation.
- a press may comprise a plurality of press rolls rotatably mounted for rotation about spaced axes and circumferentially spaced by a nip between the press rolls, one of the press rolls being laterally movable towards-and-away from the other thereof to vary the cross-section of the nip, first means actuatable for applying pressing force to the movable press roll and permitting lateral movement of the movable press roll away from the other press roll, second means actuatable for applying pressing force to the movable press roll and permitting lateral movement of the movable press roll away from the other press roll, control means for causing the first and second force applying means to maintain the axis of the movable press roll parallel to the axis of the other press roll, the first and second force applying means being spaced apart longitudinally of the movable press roll, the control means comprising connecting bridge means extending longitudinally along the movable press roll and interconnecting the force applying means to cause movement of one thereof to provide corresponding movement of the
- FIG. 1 is an elevational side view of a press including one embodiment of the invention
- FIG. 2 is an elevational end view of the press illustrated in FIG. 1;
- FIG. 3 is an enlarged, fragmentary, elevational side view, partially broken away and in section, of the press shown in FIGS. 1 and 2;
- FIG. 4 is a fragmentary, elevational, sectional view through the press rolls of such press;
- FIG. 5 is an enlarged, fragmentary, perspective view of the pressing force applying means of the press
- FIG. 6 is an enlarged, fragmentary, perspective view illustrating one of the pressure blocks of the force applying means.
- FIG. 7 is an enlarged, fragmentary, elevational sectional view taken on Line 7 -7 of FIG. 5, looking in the direction of the arrows.
- FIGS. 1 through 7 illustrate a press embodying the invention particularly adapted for pressing a liquid suspension such as, for example, pulp or effluent sludge.
- the illustrated press comprises a tank or vat, designated generally as 10, at opposite ends supported by pedestals 12 on supporting piers or foundations I4 and having one or more cleanout doors l6 permitting access to the vat interior for maintenance purposes.
- the vat 10 is provided with an inlet duct I8, adapted for connection to a pressurized source (not shown) of the suspension to be pressed, which is connected to the lower end of the vat interior through a plurality of inlet pipes 20 and communicating inlet openings 22 in the vat floor.
- the vat 10 is provided with a discharge conduit 24 open throughout the length of the vat 10 to the upper end of the vat interior to receive pressed solid material therefrom, the
- .discharge conduit 24 containing a conventional feed screw 26 constructed to shred the received pressed solid material and convey the shredded material through the conduit 24 towards its discharge 28.
- feed screw 26 is mounted on a rotatable shaft 30 also carrying a conventional gear-type speed reducer 32 having a pulley wheel 34 on its input shaft 36; and the screw 26 and shaft 30 are rotatably driven through the speed reducer 32 by a conventional rotary output drive motor (not shown) and a drive belt 38 drivingly interconnecting the motor with the pulley wheel 34.
- a conventional rotary output drive motor not shown
- a drive belt 38 drivingly interconnecting the motor with the pulley wheel 34.
- a pair of press rolls 40, 42 are rotatably mounted on parallel axes in the vat 10 circumferentially spaced by a therebetween nip M which along its upper end communicates with the discharge conduit 24 and its lower end communicates with the inlet openings 22.
- the press rolls 40, 42 as shown in FIG. 4, are provided with individual doctor blades 46, 48 which remove pressed solid material from the outer circumferences of the rolls 40, 42 whereby the removed material is discharged to the conduit 24 and its contained feed screw 26.
- the rolls 40, 42 each contain pluralities of axial liquid or filtrate discharge channels 50 spaced around their hubs 56 by separating ribs 52; and the circumferential walls 54 of the rolls 40, 42 are porous to drain liquid or filtrate to the channels 50.
- the vat 10 is provided with filtrate drainage conduits 5% for discharging liquid from the channels 50 at each end of each of the press rolls 40, 42; and an arcuate seal (not shown) is positioned at each end of each roll 40, 42 for preventing leakage around the roll ends. Also, flexible sealing means (not shown) are provided parallel to the roll axes for sealing the vat longitudinally of the rolls 40, 42.
- the hubs 56 of the press rolls 40, 42 include integral stub shafts 60 which project from their opposite ends and rotatably mount the ends of the rolls 40, 42 on pairs of carriage blocks 62, 64, respectively.
- the carriage blocks 64 are rigidly mounted in fixed position such that their carried roll 42 is rotatable about a stationary axis; the carriage blocks 62 are slidably movable toward-and-away from the carriage blocks- 64 to laterally move their carried roll 40 towards-and-away from the roll 42 and thereby vary the cross-section of the nip 44.
- Each carriage block 62 is affixed to one end of upper and lower tie rods 66 which slidably extend through bores in the carriage blocks 64 and have their other ends on the opposite side of the press roll 42 from the press roll 40.
- a platen 68 is affixed to the latter mentioned ends of the tie rods 66 connected to each of the carriage blocks 62 so that the platens 68 are resultantly conjointly laterally movable with the carriage blocks 62 and their supported roll 40.
- Pneumatically expansible springs or tubes 70 are located adjacent opposite sides of the nip 44 intermediate the thereadjacent carriage blocks 62, 64 and exert biasing forces on the carriage blocks 62 urging the roll 40 away from the roll 42.
- the expansible tubes 70 are connected by individual air supply conduits 72 to a relatively large common source or tank 74 of pressurized air at constant pressure; and the expansible tubes 70 thus exert constant equal biasing forces on the carriage blocks 62 and their carried press roll 40.
- the rolls 40, 42 are rotatably driven in the opposite rotary directions schematically depicted by the arrows in FIGS. 3 and 4 through a drive means comprising a rotatable main drive shaft 76 adapted to be coupled to a conventional rotary drive motor (not shown).
- the main drive shaft 76 is drivingly connected to one of the stub shafts 60 supporting the press roll 42 by conventional gearing contained within a gear housing designated generally as 78; and the stub shaft 60 at the opposite end of the roll 42 is drivingly connected to the thereadjacent stub shaft 60 supporting the roll 40 by conventional gearing contained within a gear housing 80.
- the teeth of the intermeshing gears in the gear housing 80 are, as will be understood, sufficiently deep to permit limited lateral movement of the press roll 40 and its stub shafts 60 relative to the press roll 42 and its stub shafts 60 without interrupting the driving connection between the stub shafts 60 for the rolls 40, 42.
- each of thelink systems 82, 84 comprises a generally vertical first link or primary lever arm 86 which intermediate its ends carries a pivot pin 88 pivotally mounting the link 86 on a fixed support 90.
- the lower end of each first link 86 is pivotally connected by a pivot pin 92 to one end of a generally horizontal second or connecting link 94, the
- the openings 118 in the links 94 receiving the pivot pins 96 are of vertical lengths substantially greater than the cross-sections of the pivot pins 96; and the pivot pins 96 are vertically centered in the openings 1 18 by springs and prevented from rotating by keys 122.
- the links 94 engage the pivot pins 96 in rolling contact to provide low friction connections between the links 94 and the pivot pins 96.
- the upper ends of the third links 98 are pivotally mounted on fixed supports 100 by pivot pins 102 and each carry an integral link 104 which is generally S- shaped in vertical cross-section.
- the generally S- shaped links 104 are pivotally mounted in contact with pressure blocks 106 and pressure plates 108 which are received in the upper and lower recesses 110, 112 of the links 104 and mounted on the carriage blocks 64 and the platens 68, respectively; and hence the links 104 connect the link systems 82, 84 to the respective thereadjacent platens 68 and apply the pressing forces of the link systems 82, 84 to the roll 40.
- leaf springs 114 are attached to the pressure blocks 106 by clamps 116, such leaf springs 114 serving to centralize the pressure blocks 106 in their recesses 110, 112.
- the link systems 82, 84 are actuated by individual pressure fluid operated actuators, one of which is shown in FIG. 3 as 124.
- the actuators 124 each comprise a cylinder 126 containing a piston 128 provided with an extension rod 130 which is connected by a pivot pin 132 to the upper end of the first link 86 of the respective link system 82 or 84; and the pivot pin 132 and the beforedescribed pivot pins 88, 92 are each circumferentially provided with needle bearings or the like to minimize friction at their connections. Due to these needle bearings and the aforedescribed connections of the pivot pins 96 to the links 94, responsiveness of the linkage systems 82, 84 to changes in the feed rate of the suspension passing through the nip 44 is maximized.
- Each cylinder 126 is pivotally mounted on a fixed support 134; and the rod'ends of the cylinders 126 are connected by individual fluid lines 136 to a relatively large common source or tank 138 of constant pressure, pressurized fluid such as air.
- the tank 138 is connected to a conduit 140, in turn, communicating with an exhaust conduit 142 open to the atmosphere; and a valve designated generally as 144 is located intermediate the conduits 140, 142 for controlling the ex-' hausting of pressurized fluid through the conduits 140, 142.
- the valve 144 comprises a piston 146 biased by a spring 148 towards an open position in which the conduits 140, 142 communicate for exhausting pressurized air from the tank 138.
- the piston 146 is normally fluid biased to a closed position, preventing communication of the conduits 140, 142, by pressurized air supplied at constant pressure through a supply conduit 150 having interposed therein a control valve 152.
- the valve 152 is normally operated by a solenoid 154 to communicate the valve 144 through the conduit 150 with the source of the biasing fluid, but upon de-energization of the solenoid 154 is actuatable by a spring 156 to exhaust the biasing fluid from the valve 144 through an exhaust conduit 158 whereby the spring 148 is permitted to move the piston 146 to its aforedescribed open position.
- a switch designated generally as 160 mounted adjacent one of the third links 98 to be tripped by the latter after a predetermined degree of movement, is electrically connected to the solenoid 154 by an electrical lead 162 to de-energize the solenoid 154 upon its tripping.
- the head end of each cylinder 126 is provided with an exhaust conduit 164 for rapidly exhausting fluid therefrom.
- the link systems 82, 84 are interconnected by control means controlling the link systems 82, 84 to cause the latter to maintain the axis of the press roll 40 parallel to the axis of the press roll 42.
- this control means comprises a connecting bridge in the form of a torsion bar 166 rigidly connected at its opposite ends to the first links 86 of the link systems 82, 84 co-axially with the pins 88.
- the torsion bar 166 hence, as will be seen, is responsive to movement of the link 86 of one of the link'systems 82, 84 to provide similar movement of the link 86 of the other thereof and in this manner insures the maintenance of the parallel axes of the rolls 40, 42.
- the expansible tubes 70 are filled with pressurized air from the source 74 and exert constant equal biasing forces through the carriage blocks 62 on the ends of the press roll 40 to hold the latter spaced away from the press roll 42 by the nip 44.
- the rod ends of the cylinders 126 of the actuators 124 are supplied pressurized air from the tank 138, the piston 146 of the valve 144 being closed due to the energization of the solenoid 154; and the pistons 128 of the actuators 124 cause the link systems 82, 84 to exert pressing force on the ends of the pressing roll 40 through the platens 68, tie rods 66 and carriage blocks 62.
- the nip 44 is resultantly pressurized; and, due to the aforedescribed construction and arrangement of the links of the link systems 82, 84 and the constant pressure of the air in the cylinders 126 of the actuators 124, a constant uniform pressing force is maintained regardless of the width of the nip 44.
- the press rolls 40, 42 are continuously rotatably driven through the drive shaft 76 and the' gearing contained within the gear casings 78, 80; and the liquid suspension to be pressed is continuously supplied to the lower end of the vat through the inlet duct 18 and the inlet pipes 20 and inlet openings 22.
- the pressure of the supplied suspension causes a portion of its liquid content to flow through the porous circumferential walls 54 of the rolls 40, 42 to the channels 50 therein; and, as the suspension passes through the nip 44 between the rolls 4t), 42, the remaining portion of the liquid content of the suspension is pressed from the latter and also flows through the circumferential walls 54 to the channels 50.
- the pressed solid material is removed from the rolls 40, 42 by the doctor blades 46, 48 and is discharged through the discharge conduit 24 by the rotatably driven feed screw 26, the liquid in the discharge channels 50 being drained therefrom through the filtrate drainage conduits 58.
- the axis of the roll 40 is maintained parallel to that of the roll 42 and the pressing force applied to the roll 40 (and hence to the nip 44) by the link systems 82, 84 maintains the nip 44 pressurized with a substantially constant force regardless of the cross-section of the nip.
- the low friction connections of the links 86, 94, 98 and the rod ends 130 substantially minimize the effects of friction on the link movement; and the pressurized air in the rod ends of the cylinders 126 of the actuators 124 displaced by the resultant movement of the pistons 128, of course, flows through the fluid lines 136 to the tank 138.
- the axes of the rolls 40, 42 are resultantly maintained parallel substantially throughout the normal press operation. Due to this maintenance of the rolls 40, 42 on parallel axes, the pressed material is maintained of uniform cross-section throughout the length of the nip 44, damage to the seals at the ends of the rolls 40, 42 is prevented, and the teeth of the gears drivingly interconnecting the rolls 40, 42 are maintained parallel to prevent their possible damage.
- the switch is tripped by the thereadjacent third link 98 de-energize the solenoid 154.
- the valve 152 is shifted by the spring 156 to exhaust pressurized air through the exhaust conduit 158, thus permitting the spring 148 to shift the piston 146 of the valve 144 to its open position whereby the tank 138 communicates with the exhaust conduit 142 and pressurized air is exhausted from the head ends of the cylinders 126 of the actuators 124.
- the pressure normally applied by the link systems 82, 84 is relieved to permit movement of the roll 40 away from the roll 42; and possible substantial damage is prevented.
- the switch 160 could, if desired, be suitably electrically connected to cause further flow of suspension to the'nip 44 to be prevented and/or otherwise shutdown the press such as by stopping the driven rotation of the rolls 4t), 42.
- a press a plurality of press rolls rotatably mounted for rotation about spaced axes and circumferentially spaced by a nip between said press rolls, one of said press rolls being laterally movable towards-andaway from the other thereof to vary the cross-section of said nip, first means actuatable for applying pressing force to said movable press roll and permitting lateral movement of said movable press roll away from said other press roll, second means actuatable for applying pressing force to said movable press roll and permitting lateral movement of said movable press roll away from said other press roll, control means for causing said first and second force applying means to maintain the axis of said movable press roll parallel to the axis of said other press roll, said first and second force applying means being spaced apart longitudinally of said movable press roll, said control means comprising connecting bridge means extending longitudinally along said movable press roll and interconnecting said force applying means to cause movement of one thereof to provide corresponding movement of the other thereof, and actuating means
- actuating means comprises individual pressure fluid operated actuators for said force applying means, and said connecting bridge means is rigidly connected at opposite ends to said force applying means.
- a plurality of press rolls rotatably mounted for rotation about spaced axes and circumferentially spaced by a nip between said press rolls, one of said press rolls being laterally movable towards-andaway from the other thereof to vary the cross-section of said nip, first link means actuatable for applying pressing force to said movable press roll and permitting tuating said first and second link means to apply said pressing force, and control means for causing said first and second link means to maintain the axis of said movable press roll parallel to the axis of said other press roll, said control means comprising a torsion bar interconnecting said first and second link means responsive upon movement of one thereof to cause similar movement of the other thereof.
- said link means comprises links interconnected by low friction connections
- a press a plurality of press rolls rotatably mounted for rotation about spaced axes and circumferentially spaced by a nip between said press rolls, one of said press rolls being laterally movable towards-andaway from the other thereof to vary the cross-section of said nip, first link means actuatable for applying pressing force to said movable press roll and permitting lateral movement of said movable press roll away from said other press roll, second link means actuatable for applying pressing force to said movable press roll and permitting lateral movement of said movable press roll away from said other press roll, said link means each comprising links interconnected by low friction connections, actuating means for actuating said first and force to said movable press roll and permitting lateral movement of said movable press roll away from said other press roll, second means actuatable for applying pressing force to said movable press roll and permitting lateral movement of said movable press roll away from said other press roll, actuating means for actuating said first and second force applying means to
- actuat ing means comprises individual pressure fluid operated actuators for said link means.
- a press according to claim 3 further comprising means intermediate said press rolls biasing said movable press roll from said other press roll.
- a press according to claim 3 further comprising support means adjacent opposite ends of said movable press roll rotatably supporting said movable press roll, a plurality of tie rods connected to said support means and projecting on the opposite side of said other press roll from said movable press roll, and platen means on such opposite side of said other press roll connected to said tie rods for conjoined movement with said movable press roll, said first and second link means being connected to said platen means to apply pressing force to said movable press roll through said platen means and said tie rods.
- said actuating means comprises individual fluid pressure operated actuators for said link means, and each of said link means comprises a first link connected to a respective one of said actuators, a second link connected to said first link, a third link connected to said second link, and connecting link means connected to said third link applying pressing force to said platen means.
- a vat inlet means for supplying a suspension to be pressed to said vat, discharge means for separately discharging pressed material and liquid from said vat, a plurality of press rolls rotatably in said for applying pressing force to said movable press roll and permitting lateral movement of said movable press roll away from said other press roll, second link means including a plurality of interconnected links actuatable for applying pressing force to said movable press roll and permitting lateral movement of said movable press roll away from said other press roll, said first and second link means being spaced apart longitudinally of said movable press roll, torsion bar means interconnecting said first and second link means responsive upon movement of the links of one thereof to cause similar movement of the links of the other thereof whereby the axis of said movable press roll is maintained parallel to the axis of said other press roll, and individual pressure fluid operated actuators for causing said first and second link means to apply pressing force to said movable press roll.
- a press according to claim 13 further comprising a common source for supplying pressurized fluid to said actuators, and means responsive upon movement of said movable press roll from said other press roll for causing pressurized fluid to be exhausted from said source and said actuators.
- a press according to claim 12 further comprising support means adjacent opposite ends of said press rolls rotatably supporting said press rolls for rotation about their said axes, a plurality of tie rods each at one end connected to said support means for said movable press roll and projecting on the opposite side of said other press roll from said movable press roll, and platen means on said opposite side of said other press roll connected to said tie rods for conjoined movement with said movable press roll, said link means being connected to said movable press roll through said platen means and said tie rods.
- each said link means comprises a pivotally mounted first link connected at one end to the respective one of said actuators, a second link pivotally connected to the other end of said first link, a third link pivotally connected to said second link, and a fourth link connected to said third link and applying force to said platen means.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Paper (AREA)
- Rolls And Other Rotary Bodies (AREA)
- Treatments Of Macromolecular Shaped Articles (AREA)
- Press Drives And Press Lines (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US15544171A | 1971-06-22 | 1971-06-22 |
Publications (1)
Publication Number | Publication Date |
---|---|
US3730079A true US3730079A (en) | 1973-05-01 |
Family
ID=22555449
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US00155441A Expired - Lifetime US3730079A (en) | 1971-06-22 | 1971-06-22 | Variable nip press having rolls maintained on parallel axes |
Country Status (9)
Country | Link |
---|---|
US (1) | US3730079A (no) |
AU (1) | AU459654B2 (no) |
BR (1) | BR7203898D0 (no) |
CA (1) | CA964090A (no) |
FI (1) | FI59552C (no) |
FR (1) | FR2143339B1 (no) |
GB (1) | GB1396153A (no) |
NO (1) | NO142862C (no) |
SE (1) | SE382413B (no) |
Cited By (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3978784A (en) * | 1974-11-11 | 1976-09-07 | Dominion Engineering Works, Limited | Calendar control system |
US4543161A (en) * | 1983-08-09 | 1985-09-24 | Shigeo Fujimoto | Double cylinder press for formation of fibrous layers |
WO1987006282A1 (en) * | 1986-04-08 | 1987-10-22 | Sunds Defibrator Aktiebolag | Dewatering press |
US5022318A (en) * | 1988-07-16 | 1991-06-11 | Alich Guenther | Apparatus for adjusting the roll gap between cooperating rolls |
US6521094B2 (en) * | 1999-03-09 | 2003-02-18 | Kvaerner Pulping Ab | Device for the treatment of a fibrous suspension |
WO2009075645A1 (en) * | 2007-12-13 | 2009-06-18 | Metso Paper, Inc. | An apparatus for washing and dewatering pulp, a system for controlling such an apparatus, and a method for processing pulp in such an apparatus |
WO2010036194A1 (en) * | 2008-09-24 | 2010-04-01 | Metso Paper, Inc. | An apparatus for washing and/or dewatering pulp |
WO2010036192A1 (en) * | 2008-09-24 | 2010-04-01 | Metso Paper, Inc. | An apparatus for washing and/or dewatering pulp |
WO2012128711A1 (en) * | 2011-03-24 | 2012-09-27 | Metso Paper Sweden Ab | A device for adjusting a press nip |
CN103028281A (zh) * | 2012-11-12 | 2013-04-10 | 大连太平洋电子有限公司 | 一种化学沉锡线的沉锡槽液除铜工艺方法 |
WO2014063174A1 (de) * | 2012-10-22 | 2014-05-01 | Lisec Austria Gmbh | Vorrichtung zum laminieren von plattenförmigen gegenständen |
CN114311807A (zh) * | 2021-12-31 | 2022-04-12 | 广西壮族自治区农业科学院 | 一种甘蔗压榨机 |
US11702795B2 (en) | 2016-09-15 | 2023-07-18 | Valmet Ab | Apparatus for washing and dewatering pulp, a system for controlling such an apparatus, and a method for processing pulp in such an apparatus |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2453665B1 (fr) * | 1979-04-09 | 1987-06-05 | Stigebrandt Ake | Dispositif du type a tambours rotatifs filtrants pour la separation des materiaux en suspension dans des liquides |
DE3420409A1 (de) * | 1984-06-01 | 1985-12-05 | ELTI Apparatebau und Elektronik GmbH, 6106 Erzhausen | Laminierstation |
DE4234481A1 (de) * | 1992-10-13 | 1994-04-14 | Krupp Polysius Ag | Walzenmühle |
DE102007059073A1 (de) * | 2007-12-07 | 2009-06-10 | Khd Humboldt Wedag Gmbh | Rollenpresse mit symmetrischer Walzenzentrierung |
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-
1971
- 1971-06-22 US US00155441A patent/US3730079A/en not_active Expired - Lifetime
-
1972
- 1972-05-24 AU AU42672/72A patent/AU459654B2/en not_active Expired
- 1972-05-26 GB GB2498772A patent/GB1396153A/en not_active Expired
- 1972-06-02 FI FI1569/72A patent/FI59552C/fi active
- 1972-06-08 CA CA144,282A patent/CA964090A/en not_active Expired
- 1972-06-16 BR BR3898/72A patent/BR7203898D0/pt unknown
- 1972-06-19 SE SE7208078A patent/SE382413B/xx unknown
- 1972-06-21 NO NO2220/72A patent/NO142862C/no unknown
- 1972-06-22 FR FR727222661A patent/FR2143339B1/fr not_active Expired
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US1194266A (en) * | 1916-08-08 | alvord | ||
US2312726A (en) * | 1939-03-01 | 1943-03-02 | Champion Paper & Fibre Co | Hydraulic calender |
US2374046A (en) * | 1940-04-25 | 1945-04-17 | Stacom Process Corp | Method of disintegrating cellulosecontaining structures |
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US2738663A (en) * | 1951-02-21 | 1956-03-20 | Robert Gair Co Inc | Pressure loading control |
US2823535A (en) * | 1955-04-25 | 1958-02-18 | Hunter James Machine Co | Automatic locking means for squeeze rolls and the like |
US3269303A (en) * | 1958-05-31 | 1966-08-30 | Qviller Olaf | Apparatus for treating fiber masses |
US3460467A (en) * | 1966-01-25 | 1969-08-12 | Sunds Ab | Wet presses |
US3527159A (en) * | 1968-03-27 | 1970-09-08 | Du Pont | Nip roll apparatus |
US3653320A (en) * | 1969-05-17 | 1972-04-04 | Berstorff Gmbh Masch Hermann | Calendar adjustment mechanism |
Cited By (28)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3978784A (en) * | 1974-11-11 | 1976-09-07 | Dominion Engineering Works, Limited | Calendar control system |
US4543161A (en) * | 1983-08-09 | 1985-09-24 | Shigeo Fujimoto | Double cylinder press for formation of fibrous layers |
WO1987006282A1 (en) * | 1986-04-08 | 1987-10-22 | Sunds Defibrator Aktiebolag | Dewatering press |
US4861433A (en) * | 1986-04-08 | 1989-08-29 | Sunds Defibrator Aktiebolag | Dewatering press with perforated metal outer shell and resilient elastic mounting means |
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RU2469143C2 (ru) * | 2007-12-13 | 2012-12-10 | Метсо Пэйпер, Инк. | Аппарат для промывки и обезвоживания волокнистой массы, система управления таким аппаратом и способ обработки волокнистой массы на таком аппарате |
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WO2009075645A1 (en) * | 2007-12-13 | 2009-06-18 | Metso Paper, Inc. | An apparatus for washing and dewatering pulp, a system for controlling such an apparatus, and a method for processing pulp in such an apparatus |
US9200407B2 (en) | 2007-12-13 | 2015-12-01 | Valmet Technologies, Inc. | System for washing and dewatering pulp |
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CN102165116A (zh) * | 2008-09-24 | 2011-08-24 | 美佐纸业股份有限公司 | 对纸浆进行洗涤和/或脱水的设备 |
CN102165115B (zh) * | 2008-09-24 | 2013-07-10 | 美佐纸业股份有限公司 | 对纸浆进行洗涤和/或脱水的设备 |
EP2331747A4 (en) * | 2008-09-24 | 2013-07-17 | Metso Paper Inc | DEVICE FOR WASHING AND / OR DRAINING POWDER |
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WO2014063174A1 (de) * | 2012-10-22 | 2014-05-01 | Lisec Austria Gmbh | Vorrichtung zum laminieren von plattenförmigen gegenständen |
CN104755256A (zh) * | 2012-10-22 | 2015-07-01 | 李赛克奥地利有限公司 | 用于对板状物体进行层压的设备 |
RU2597917C1 (ru) * | 2012-10-22 | 2016-09-20 | Лисец Аустриа Гмбх | Устройство для ламинирования пластинообразных предметов |
US9555605B2 (en) | 2012-10-22 | 2017-01-31 | Lisec Austria Gmbh | Device for laminating plate-shaped articles |
CN103028281B (zh) * | 2012-11-12 | 2014-12-24 | 大连太平洋电子有限公司 | 一种化学沉锡线的沉锡槽液除铜工艺方法 |
CN103028281A (zh) * | 2012-11-12 | 2013-04-10 | 大连太平洋电子有限公司 | 一种化学沉锡线的沉锡槽液除铜工艺方法 |
US11702795B2 (en) | 2016-09-15 | 2023-07-18 | Valmet Ab | Apparatus for washing and dewatering pulp, a system for controlling such an apparatus, and a method for processing pulp in such an apparatus |
CN114311807A (zh) * | 2021-12-31 | 2022-04-12 | 广西壮族自治区农业科学院 | 一种甘蔗压榨机 |
CN114311807B (zh) * | 2021-12-31 | 2024-03-22 | 广西壮族自治区农业科学院 | 一种甘蔗压榨机 |
Also Published As
Publication number | Publication date |
---|---|
CA964090A (en) | 1975-03-11 |
NO142862C (no) | 1980-11-05 |
FI59552B (fi) | 1981-05-29 |
AU4267272A (en) | 1973-11-29 |
AU459654B2 (en) | 1975-04-10 |
FR2143339B1 (no) | 1973-07-13 |
FR2143339A1 (no) | 1973-02-02 |
NO142862B (no) | 1980-07-28 |
FI59552C (fi) | 1981-09-10 |
BR7203898D0 (pt) | 1973-06-07 |
SE382413B (sv) | 1976-02-02 |
GB1396153A (en) | 1975-06-04 |
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