WO2018220977A1 - Squeezing device and squeezing method - Google Patents

Squeezing device and squeezing method Download PDF

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Publication number
WO2018220977A1
WO2018220977A1 PCT/JP2018/013132 JP2018013132W WO2018220977A1 WO 2018220977 A1 WO2018220977 A1 WO 2018220977A1 JP 2018013132 W JP2018013132 W JP 2018013132W WO 2018220977 A1 WO2018220977 A1 WO 2018220977A1
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WO
WIPO (PCT)
Prior art keywords
roll
pressing
squeezing
peripheral surface
inscribed
Prior art date
Application number
PCT/JP2018/013132
Other languages
French (fr)
Japanese (ja)
Inventor
紘宜 岩田
哲也 岸口
吉田　昌義
猛 西
Original Assignee
新日鉄住金エンジニアリング株式会社
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Publication of WO2018220977A1 publication Critical patent/WO2018220977A1/en

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    • 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
    • B30B9/207—Roller-and-ring presses
    • 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
    • B30B3/06—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 arranged one within another, e.g. with a roller disposed within a rotating ring and co-operating with the inner surface thereof
    • 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

  • the present invention relates to a pressing device and a pressing method.
  • Patent Document 1 Conventionally, a pressing device shown in Patent Document 1 below is known.
  • the squeezing device described in Patent Literature 1 includes a ring roll, an inscribed roll arranged in a space formed inside the ring roll, and a pressing roll arranged below the ring roll.
  • the ring roll and the inscribed roll are rotated in the same direction while the ring roll is pressed by the pressing roll.
  • the compressed object is supplied between the ring roll and the inscribed roll, the compressed object is compressed between the ring roll and the inscribed roll.
  • the juice obtained by pressing flows out downward and is collected.
  • the residue after pressing the object to be compressed is collected by suction.
  • the supply speed of the compressed object In order to improve the compression treatment speed, it is conceivable to increase the supply amount of the compressed object per unit time (hereinafter also referred to as the supply speed of the compressed object).
  • the supply speed of the pressing object when the supply speed of the pressing object is increased, a part of the pressing object supplied between the ring roll and the inscribed roll cannot pass between the rolls. There is a possibility that it will flow downward together with the juice. As a result, the recovery rate of the solid content contained in the residue (hereinafter also referred to as the solid recovery rate of the residue) decreases.
  • This invention is made
  • the purpose is to provide.
  • the squeezing device includes first and second squeezing rolls that are rotatably arranged, and a supply unit that supplies an object to be squeezed between the peripheral surfaces of the first and second squeezing rolls.
  • a squeezing device that squeezes an object to be squeezed between the circumferential surfaces of the first and second squeezing rolls, wherein at least one circumferential surface of the first and second squeezing rolls One or more grooves that extend over the entire circumference and into which the compressed object enters are formed, and the total width in the axial direction of the first or second compressed roll of the one or more grooves is from the supply unit. It is 150% or less of the input width into which the compressed object is input between the peripheral surfaces.
  • the squeezed object is squeezed between the peripheral surfaces of the first and second squeezing rolls, and the squeezed liquid is separated from the squeezed object.
  • the squeezed object to be squeezed is recovered as a residue after passing through the position where the first and second squeezing rolls are closest.
  • the distance (size of the gap) between the peripheral surfaces of the first and second pressing rolls at the closest point of the roll is small.
  • a groove extending over the entire circumference of the peripheral surface is formed on at least one peripheral surface of the first and second pressing rolls.
  • channel can be changed by changing the supply speed
  • the degree of pressing of a pressing target object changes, and the moisture content of the residue after pressing of a pressing target object can be adjusted to a desired value.
  • the moisture content indicates the ratio of the weight of water to the total weight.
  • this roll serves as a relief when a foreign object is caught between the rolls, and can prevent the compressed roll from being damaged by the foreign object (for example, cracking of the roll).
  • the groove may be formed at a central portion in the rotation axis direction of the first or second pressing roll.
  • the distance between the circumferential surfaces of the first and second pressing rolls on both sides is smaller than the distance between the circumferential surfaces of the first and second pressing rolls on the central portion. That is, both side portions of the first and second pressing rolls protrude outward in the radial direction of the pressing roll from the central portion. Therefore, it can prevent more effectively that the pressing target object which entered the groove
  • the groove may be formed continuously over the entire circumference of the peripheral surface.
  • the distance between the peripheral surfaces of the first and second pressing rolls at the closest point of the pressing roll can be made constant over the entire circumference, and most of the pressing object can be compressed more reliably. It can be bitten between the peripheral surfaces of the roll.
  • a said 1st pressing roll is a ring roll in which a space part is formed inside, and a said 2nd pressing roll is the inscribed in the said space part of the said ring roll.
  • the groove may be formed on at least one of the outer peripheral surface of the inscribed roll and the inner peripheral surface of the ring roll.
  • control part which adjusts the mass supplied per unit time of the said pressing target object from the said supply part according to the moisture content which the residue after the pressing of the said pressing target object desires. May be further provided.
  • the moisture content of the residue can be adjusted to a value (for example, 30 to 50%) suitable for using the residue as a fuel or the like as it is, and the processing for using the residue is simplified.
  • the squeezing method according to the present invention is a squeezing method in which the squeezing object is squeezed by the squeezing device, wherein the squeezing object is supplied between the peripheral surfaces of the first and second squeezing rolls;
  • the mass supplied per unit time of the pressing object may be adjusted according to the desired moisture content of the residue.
  • a squeezing device and a squeezing method that can improve the squeezing speed while preventing a decrease in the solid recovery rate of the residue after squeezing the object to be squeezed.
  • FIG. 2 is a cross-sectional view taken along the line II-II shown in FIG. It is an expanded sectional view of a ring roll and an inscribed roll of a pressing device concerning one embodiment of the present invention. It is a front view which shows the support state of the ring roll of the pressing device which concerns on one Embodiment of this invention, and the surrounding member of a ring roll. It is a figure for demonstrating the expression process and collection
  • FIG. 1 is a schematic front view of the pressing device 10.
  • 2 is a cross-sectional view taken along the line II-II shown in FIG.
  • FIG. 3 is an enlarged cross-sectional view of the ring roll 2 and the inscribed roll 3 of the pressing device 10.
  • FIG. 4 is a front view showing a support state of the ring roll 2 of the pressing device 10 and members around the ring roll 2.
  • the pressing device 10 of this embodiment includes a frame 1, a ring roll 2 (first pressing roll), an inscribed roll 3 (second pressing roll), and a pressing roll 4.
  • the ring roll 2 is supported by the frame 1 so as to be movable up and down and rotatable about the first rotation axis.
  • the inscribed roll 3 is arranged in a cylindrical space 2A formed inside the ring roll 2 and rotates around a second rotation axis arranged in parallel with the first rotation axis.
  • the pressing roll 4 is disposed below the ring roll 2 to press the outer peripheral surface of the ring roll 2 and rotates around a third rotation axis that is disposed in parallel with the first rotation axis. As shown in FIG.
  • the ring roll 2, the inscribed roll 3, and the pressing roll 4 have a rotation center of the ring roll 2, a rotation center of the inscribed roll 3, and a pressing roll 4 when viewed from the respective rotation axis directions.
  • the line L extends in a direction orthogonal to the rotation axes of the ring roll 2, the inscribed roll 3, and the pressing roll 4.
  • front, rear, left and right of the pressing device 10 are defined with reference to FIGS. 1 and 2.
  • the Xa direction in FIGS. 1 and 2 is defined as the left side
  • the Xb direction is defined as the right side
  • the Ya direction is defined as the front side
  • the Yb direction is defined as the rear side.
  • the frame 1 includes a bottom plate portion 11 and a column portion 12 erected on the bottom plate portion 11.
  • the ring roll 2 is supported by a support member (not shown) arranged before and after the ring roll 2 so that movement in the front-rear direction is restricted.
  • a support member (not shown) arranged before and after the ring roll 2 so that movement in the front-rear direction is restricted.
  • the lower left portion of the ring roll 2 is supported by a fixed roll 18 attached to the frame 1 at a fixed position.
  • the lower right portion of the ring roll 2 is supported by a movable roll 19 that can move in the vertical direction.
  • the movable roll 19 is supported by the roll support portion 21.
  • the roll support portion 21 is supported by the column portion 12 of the frame 1 via the elastic member 20 so as to be movable up and down.
  • the roll support portion 21 is supported by the column portion 12 of the frame 1 via the elastic member 20, and the movement in the left-right direction is restricted by the bolt 22.
  • the inscribed roll 3 has a pair of small diameter shaft portions 3e extending in the front-rear direction.
  • the pair of small-diameter shaft portions 3 e are supported via a bearing 25 on a bearing block 26 attached to the column portion 12 of the frame 1.
  • the inscribed roll 3 is rotatably disposed at a predetermined position.
  • a rotating shaft 28 is connected to the rear side of the inscribed roll 3 through a coupling 27, and a driving unit 29 such as a motor is connected to the rotating shaft 28.
  • a driving unit 29 such as a motor is connected to the rotating shaft 28.
  • the pressing roll 4 has a pair of small diameter shaft portions 4a extending in the front-rear direction.
  • the pair of small-diameter shaft portions 4 a are supported via bearings 31 on bearing blocks 32 that are supported by the column portions 12 of the frame 1 so as to be movable up and down.
  • a pressing cylinder 33 that presses the bearing block 32 upward is provided between the bearing block 32 and the bottom plate portion 11 of the frame 1. The pressing cylinder 33 presses the pressing roll 4 upward, that is, toward the ring roll 2 via the bearing block 32.
  • a rotating shaft 35 is connected to the rear of the pressing roll 4 via a coupling 34, and a driving unit 36 such as a motor is connected to the rotating shaft 35.
  • a driving unit 36 such as a motor is connected to the rotating shaft 35.
  • the pressing roll 4 rotates around the third rotation axis.
  • the pressing cylinder 33 presses the pressing roll 4 toward the ring roll 2
  • the rotation of the pressing roll 4 is transmitted to the ring roll 2 by friction, and the ring roll 2 also rotates around the first rotation axis.
  • the inner peripheral surface 2a of the ring roll 2 is formed with a groove 2b extending over the entire circumference of the inner peripheral surface 2a.
  • the groove 2b is formed continuously over the entire circumference of the inner peripheral surface 2a.
  • the depth of the groove 2b is the same over the entire circumference.
  • the groove 2b is formed in the central portion 2c in the first rotation axis direction of the ring roll 2 (that is, the front-rear direction shown in FIG. 2), and is not formed in the both side portions 2d.
  • the groove 2b is formed in an isosceles trapezoidal shape in a cross-sectional view along the first rotation axis direction.
  • the groove 2b is gradually narrowed from the inside in the radial direction of the ring roll 2 toward the outside.
  • a groove 3b extending over the entire circumference of the outer peripheral surface 3a is formed on the outer peripheral surface 3a of the inscribed roll 3.
  • the groove 3b is formed continuously over the entire circumference of the outer peripheral surface 3a.
  • the depth of the groove 3b is the same over the entire circumference.
  • the groove 3b is formed in the central portion 3c in the second rotation axis direction of the inscribed roll 3 (that is, the front-rear direction shown in FIG. 2), and is not formed in the both side portions 3d.
  • the groove 3b is formed in an isosceles trapezoidal shape in a cross-sectional view along the second rotation axis direction.
  • the groove 3b gradually becomes wider from the inner side to the outer side in the radial direction of the inscribed roll 3.
  • both side portions 2d of the ring roll 2 are in contact with each other.
  • the closest approach point of the roll is located at the lowest point of the inscribed roll 3.
  • a gap is formed between the central portion 2c of the ring roll 2 and the central portion 3c of the inscribed roll 3 by forming grooves 2b and 3b.
  • the opening area facing the passing direction of the pressing object W1 that is, A plane passing through the first rotation axis of the ring roll 2 and the second rotation axis of the inscribed roll 3 in the gap between the inner peripheral surface 2a of the ring roll 2 and the outer peripheral surface 3a of the inscribed roll 3 (Opening area) increases.
  • the passing direction of the pressing object W1 is the circumferential direction of the ring roll 2 and the inscribed roll 3.
  • the size M of the gap between the central portion 2c of the ring roll 2 and the central portion 3c of the inscribed roll 3 at the closest point of the roll in the initial state (hereinafter, the central portion 2c and the central portion 3c in the initial state)
  • the size of the gap M between the two is also referred to as the gap size M) is preferably 1.5 mm or less.
  • the size M of the gap is a size in the direction (vertical direction in the present embodiment) perpendicular to the first rotation axis of the ring roll 2 and the second rotation axis of the inscribed roll 3 with respect to the gap. That's it.
  • the work amount of the drive unit 29 and the drive unit 36 required for the compression of the compressed object W1 becomes too large, or the suction recovery of the residue W3 after the compressed object W1 is compressed.
  • the amount of work of a suction unit 55 (described later) required for this will become too large.
  • size M of a clearance gap can be 0.2 mm, 0.2 mm or less may be sufficient.
  • the width of the rolls in the grooves 2b and 3b in the axial direction (Y-axis direction) is the input width w (roll) in which the squeezed object W1 is introduced between the ring roll 2 and the inscribed roll 3 from the supply unit 48 described later.
  • the predetermined width in the axial direction is preferably 50 to 150%.
  • the lower portion of the space 2 ⁇ / b> A formed inside the ring roll 2 is divided into two by the inscribed roll 3.
  • the left side of the inscribed roll 3 (that is, the upstream side in the passing direction of the compressed object W1 from the closest point of the roll) becomes the compressed object input unit 40, and the right side of the inscribed roll 3 (that is, the closest approach of the roll).
  • the downstream side in the direction of passage of the compressed object W1 from the point becomes the residue collection unit 41 from which the residue W3 after compression is collected.
  • a supply unit 48 is connected to the pressing object input unit 40.
  • the compressed object W1 is supplied from the supply unit 48 to the compressed object input unit 40.
  • a control unit 49 is connected to the supply unit 48.
  • the control part 49 adjusts the supply speed
  • a suction unit 55 is connected to the residue collection unit 41. The residue W3 discharged to the residue collection unit 41 by the suction unit 55 is collected by suction.
  • the inscribed roll 3 is rotated in a predetermined direction by the drive unit 29. Further, the pressing roll 4 is pressed by the pressing cylinder 33 toward the upper ring roll 2 side. In this state, when the pressing roll 4 is rotated in the direction opposite to the rotation of the inscribed roll 3 by the driving unit 36, the rotation of the pressing roll 4 is transmitted to the ring roll 2, and the ring roll 2 is moved to the inscribed roll 3. It is rotated in the same direction as the rotation.
  • the compressed object W1 When the compressed object W1 is input from the supply unit 48 to the compressed object input unit 40, the compressed object W1 is formed between the inner peripheral surface 2a of the ring roll 2 and the outer peripheral surface 3a of the inscribed roll 3 that rotate in the same direction. Supplied in between (supply process). The pressing object W1 is compressed between the inner peripheral surface 2a of the ring roll 2 and the outer peripheral surface 3a of the inscribed roll 3, and the squeezed liquid W2 is separated from the pressing target object W1 (squeezing step). In addition, in the case of a pressing process, the pressing target object W1 (solid content of the pressing target object W1) enters into the grooves 2b and 3b.
  • the squeezed liquid W2 flows downward and is collected on the side of the squeeze object input unit 40 from the closest point of the roll. Moreover, the residue W3 after pressing is discharged to the residue collecting unit 41 located on the opposite side of the pressing object input unit 40 across the closest point of the roll, and is sucked and collected by the suction unit 55 (recovery) Process).
  • the both side parts 2d of the ring roll 2 and the both side parts 3d of the inscribed roll 3 are in contact at the closest point of the roll.
  • the squeezing object W1 also creates a gap between both side portions 2d of the ring roll 2 and both side portions 3d of the inscribed roll 3.
  • the thickness T1 is also referred to as the input thickness T1.
  • the input thickness T1 and the point P1 are the mass V of the compressed object W1 supplied per unit time from the supply unit 48 to the compressed object input unit 40 (hereinafter also referred to as the supply speed of the compressed object W1) V, and the inscribed roll 3 is uniquely determined based on the outer diameter D of 3, the rotational speed R of the inscribed roll 3, the bulk density ⁇ before pressing the compressed object W1, and the input width w of the compressed object W1.
  • the input thickness T1 is obtained from the equation (1).
  • ⁇ is the circumference ratio.
  • T1 V / (w ⁇ ⁇ ⁇ D ⁇ R ⁇ ⁇ ) (1) If the input thickness T1 is determined, the position of the point P1 is uniquely determined.
  • the squeezing step in which the squeezed liquid W2 is removed from the squeezed object W1 is performed.
  • the pressing target object W1 contains the squeezed liquid W2
  • it is compressed as the distance between the inner peripheral surface 2a of the ring roll 2 and the outer peripheral surface 3a of the inscribed roll 3 decreases.
  • the squeezed liquid W2 is separated from the squeezed object W1.
  • the upper limit (limit value) T2 of the thickness of the compressed object W1 that can pass between the rolls is the friction coefficient between the compressed object W1, the ring roll 2 and the inscribed roll 3, and the ring. It is uniquely determined based on the diameter ratio of the inscribed roll 3 to the roll 2 and the outer diameter D of the inscribed roll 3. More specifically, there is a positive correlation between the upper limit value T2 of the thickness and the friction coefficient between the compressed object W1, the ring roll 2 and the inscribed roll 3, and the compressed object W1, the ring roll 2 and the inscribed line When the coefficient of friction with the roll 3 increases, the upper limit value T2 of the thickness increases. Further, when the diameter ratio of the inscribed roll 3 to the ring roll 2 is increased, the upper limit value T2 of the thickness is increased. Further, when the outer diameter of the inscribed roll 3 is increased, the upper limit value T2 of the thickness is increased.
  • the compressed object W1 When the input thickness T1 of the compressed object W1 is equal to or less than the upper limit T2 of the thickness, the compressed object W1 is bitten by friction between the rolls, and passes through the point P2, which is the closest point of the roll, to collect the residue. It is conveyed to the section 41.
  • the squeezed object W1 exceeds the upper limit value T2
  • the squeezed object W1 having a thickness exceeding the upper limit value T2 is not bitten between the rolls by friction, and moves downward together with the juice liquid W2. leak.
  • the distance (size of the gap) between the ring roll and the inscribed roll at the closest point P2 of the roll is small.
  • the entire pressing target object W1 cannot be bitten between the ring roll and the inscribed roll, and a part of the pressing target object W1. Will pass through the side of the ring roll and the inscribed roll until it passes through the closest point P2 of the roll.
  • grooves 2b and 3b that extend over the entire circumference of the inner peripheral surface 2a of the ring roll 2 and the outer peripheral surface 3a of the inscribed roll 3 and into which the compressed object W1 enters are formed.
  • the distance between the inner peripheral surface 2a of the ring roll 2 and the outer peripheral surface 3a of the inscribed roll 3 at the closest point P2 of the roll is increased by the formation of the grooves 2b and 3b. Therefore, the clearance gap between the inner peripheral surface 2a of the ring roll 2 and the outer peripheral surface 3a of the inscribed roll 3 in the closest point P2 of a roll becomes large.
  • the solid recovery rate of the residue W3 means the ratio of the mass of the solid content contained in the collect
  • the filling rate of the pressing target object W1 with respect to the clearance gap between the rolls formed by the grooves 2b and 3b can be changed by changing the supply speed of the pressing target object W1. it can. Thereby, the degree of pressing of the pressing target object W1 changes, and the moisture content of the residue W3 after pressing the pressing target object W1 can be adjusted to a predetermined value.
  • the gap between the rolls serves as a relief when a foreign matter is caught between the rolls, and damage to the ring roll 2 and the inscribed roll 3 due to the foreign matter (for example, cracking of the roll) can be prevented.
  • the groove 2b is formed in the central portion 2c of the ring roll 2 in the first rotational axis direction
  • the groove 3b is formed in the central portion 3c of the inscribed roll 3 in the second rotational axis direction. Is formed.
  • the distance between the inner peripheral surface 2a of the ring roll 2 and the outer peripheral surface 3a of the inscribed roll 3 at both side portions 2d and 3d is the same as the inner peripheral surface 2a of the ring roll 2 at the center portions 2c and 3c.
  • the distance is smaller than the distance between the roll 3 and the outer peripheral surface 3a.
  • both side portions 2d and 3d protrude outward in the radial direction of the ring roll 2 and the inscribed roll 3 from the central portions 2c and 3c. Therefore, it can prevent more effectively that the pressing target object W1 which entered into the groove
  • channel 2b is formed continuously over the perimeter of the internal peripheral surface 2a
  • channel 3b is formed continuously over the perimeter of the outer peripheral surface 3a.
  • positioned in the space part 2A of the ring roll 2 is provided.
  • the pressing device 10 is employed. Thereby, the pressing rate of the pressing target object W1 improves. Therefore, most of the pressing object W1 can be bitten between the inner peripheral surface 2a of the ring roll 2 and the outer peripheral surface 3a of the inscribed roll 3 while ensuring a high pressing rate, and the efficiency of the pressing process is improved. improves.
  • the pressing device 10 supplies the pressing object W1 between the inner peripheral surface 2a of the ring roll 2 and the outer peripheral surface 3a of the inscribed roll 3, and the desired residue W3.
  • the control part 49 which adjusts the supply speed
  • the moisture content of the residue W3 can be adjusted to a value (for example, 30 to 50%) suitable for using the residue W3 as a fuel as it is, for example, and the processing for using the residue W3 is simplified. Become.
  • Example> In order to examine the squeezing performance of the squeezed object W1 by the squeezing device 10 of the present invention, the following experiments 1 to 3 were performed. In the following experiment, an oil palm trunk having a moisture content of 55 to 75% was used as the pressing object W1. As Example 1, the structure shown in FIGS. 1 to 4 is used, and the size M of the gap between the center part 2c of the ring roll 2 and the center part 3c of the inscribed roll 3 in the initial state is 0.4 mm. A certain pressing device 10 was created. As Example 2, it has the structure shown in FIGS.
  • Example 3 it has the structure shown in FIGS. 1 to 4, and the size M of the gap between the center part 2c of the ring roll 2 and the center part 3c of the inscribed roll 3 in the initial state is 0.6 mm.
  • a certain pressing device 10 was created.
  • Example 4 the structure shown in FIGS. 1 to 4 is used, and the size M of the gap between the center part 2c of the ring roll 2 and the center part 3c of the inscribed roll 3 in the initial state is 0.7 mm.
  • a certain pressing device 10 was created.
  • a conventional pressing device having the same structure as that shown in FIGS. 1, 2, and 4 but having no grooves formed on the ring roll and the inscribed roll was created. That is, in the expression device of the comparative example, the size of the gap between the center portion of the ring roll and the center portion of the inscribed roll in the initial state is 0 mm.
  • Example 1 The squeezed object W1 was squeezed using the squeezing device 10 of Examples 1 to 3 and the squeezing device of the comparative example, and the solid recovery rate of the residue W3 sucked and collected by the suction part 55 was measured.
  • the measurement results are shown in Table 1 below.
  • the measurement results in Table 1 were collected and averaged when the moisture content of the residue W3 sucked and collected by the suction unit 55 was 35 to 40%.
  • rate of the pressing target object W1 has shown the weight of the pressing target object W1 supplied per hour.
  • the solid recovery rate of the residue W3 indicates the ratio of the weight of the solid content of the residue W3 sucked and collected by the suction unit 55 with respect to the weight of the solid content of the pressing object W1 before pressing.
  • the production rate of the residue W3 indicates the weight of the residue W3 produced per hour.
  • the solid recovery rate of the residue W3 was stabilized at around 80%. Therefore, according to the squeezing device 10 of the present embodiment, the solid recovery rate of the residue W3 can be kept high regardless of the size M of the gap between the central portion 2c and the central portion 3c in the initial state. I understand that.
  • the solid recovery rate of the residue W3 remained at about 70%. In the squeezing device of the comparative example, the entire squeezed object W1 cannot be bitten between the ring roll and the inscribed roll, and a part of the squeezed object W1 is on the ring roll and the inscribed roll side. It is thought that the solid recovery rate of the residue W3 was lowered because it dropped out through the part.
  • the solid recovery rate of the residue W3 did not decrease even when the supply speed of the pressing object W1 was increased.
  • the solid recovery rate of the residue W3 when the supply speed of the pressing object W1 was increased, the solid recovery rate of the residue W3 further decreased. It is thought that the ratio of the pressing target object W1 that drops down through the side portions of the ring roll and the inscribed roll increases due to the increase in the supply amount of the pressing target object W1.
  • the size M of the gap between the central portion 2c and the central portion 3c in the initial state can be adjusted to a desired value by changing the supply speed
  • the shape of the groove is not limited to the isosceles trapezoidal shape in a cross-sectional view along the rotation axis direction, and may be a half-elliptical elliptical shape or an arc shape.
  • channels 2b and 3b are formed continuously over the perimeter of the surrounding surfaces 2a and 3a.
  • the grooves 2b and 3b only need to be formed over the entire circumference of the peripheral surfaces 2a and 3a, and may be intermittent.
  • the groove 2 b is formed on the inner peripheral surface 2 a of the ring roll 2, and the groove 3 b is formed on the outer peripheral surface 3 a of the inscribed roll 3.
  • a groove may be formed in at least one of the inner peripheral surface 2a of the ring roll 2 and the outer peripheral surface 3a of the inscribed roll 3.
  • channel 2b, 3b is formed in each of the inner peripheral surface 2a of the ring roll 2, and the outer peripheral surface 3a of the inscribed roll 3. As shown in FIG.
  • a plurality of grooves may be formed on the inner peripheral surface 2a of the ring roll 2 and the outer peripheral surface 3a of the inscribed roll 3 so as to be separated from each other in the axial direction of the roll.
  • the total width in the axial direction of the plurality of groove rolls is 50 to 150% of the input width w of the pressing object W1.
  • FIG. 6 is a perspective view of a two-roll circumscribed squeezing device 60 that is a modification of the embodiment of the present invention.
  • the pressing device 60 includes an upper roll 61 (first pressing roll) and a lower roll 62 (second pressing roll) disposed below the upper roll 61.
  • the upper roll 61 and the lower roll 62 rotate in directions opposite to each other around rotation axes arranged in parallel to each other.
  • a groove 61a extending over the entire periphery of the outer peripheral surface is formed.
  • a groove 62a is formed extending over the entire outer peripheral surface. Also in the squeezing device 60 of the modified example, the distance between the outer peripheral surface of the upper roll 61 and the outer peripheral surface of the lower roll 62 is increased by the grooves 61a and 62a, as much as the grooves 61a and 62a are formed. Therefore, the gap between the outer peripheral surface of the upper roll 61 and the outer peripheral surface of the lower roll 62 at the closest point of the roll is increased.
  • the present invention can also be applied to a three-roll circumscribing press.
  • a squeezing device and a squeezing method that can improve the squeezing speed while preventing a decrease in the solid recovery rate of the residue after squeezing the object to be squeezed.

Abstract

Provided is a squeezing device (10) that is provided with a first and a second squeeze roll (2, 3) disposed so as to be rotatable and a supply part (48) for supplying a to-be-squeezed object (W1) between circumferential surfaces (2a, 3a) of the first and second squeeze rolls, and that squeezes the to-be-squeezed object between the circumferential surfaces of the first and second squeeze rolls, wherein one or more grooves (2b, 3b), which extend around the entire circumference of the circumferential surface and into which the to-be-squeezed object makes entry, are formed at at least one of the circumferential surfaces of the first and second squeeze rolls, and the total width of the one or more grooves in the axial direction of the first or second squeeze roll is not more than 150% of a feeding width that allows the to-be-squeezed object to be fed from the supply part to between the circumferential surfaces.

Description

圧搾装置および圧搾方法Squeezing device and squeezing method
　本発明は、圧搾装置および圧搾方法に関する。
　本願は、２０１７年５月２９日に、日本に出願された特願２０１７－１０５６０９号に基づき優先権を主張し、その内容をここに援用する。 The present invention relates to a pressing device and a pressing method.
This application claims priority on May 29, 2017 based on Japanese Patent Application No. 2017-105609 filed in Japan, the contents of which are incorporated herein by reference.
　従来、下記特許文献１に示す圧搾装置が知られている。特許文献１に記載された圧搾装置は、リングロールと、リングロールの内側に形成された空間部に配置される内接ロールと、リングロールの下方に配置される押圧ロールとを備える。圧搾対象物の圧搾時には、押圧ロールによりリングロールを押圧した状態で、リングロールおよび内接ロールを同一方向へ回転させる。圧搾対象物をリングロールと内接ロールとの間に供給すると、圧搾対象物はリングロールと内接ロールとの間で圧搾される。圧搾により得られた搾汁液は下方へ流れ出て回収される。圧搾対象物の圧搾後の残渣は、吸引回収される。 Conventionally, a pressing device shown in Patent Document 1 below is known. The squeezing device described in Patent Literature 1 includes a ring roll, an inscribed roll arranged in a space formed inside the ring roll, and a pressing roll arranged below the ring roll. At the time of squeezing the object to be squeezed, the ring roll and the inscribed roll are rotated in the same direction while the ring roll is pressed by the pressing roll. When the compressed object is supplied between the ring roll and the inscribed roll, the compressed object is compressed between the ring roll and the inscribed roll. The juice obtained by pressing flows out downward and is collected. The residue after pressing the object to be compressed is collected by suction.
日本国特許第５７９９１８９号公報Japanese Patent No. 5799189
　圧搾処理速度を向上させるために、圧搾対象物の単位時間当たりの供給量（以下、圧搾対象物の供給速度とも言う）を増加させることが考えられる。しかしながら、上述した従来の圧搾装置では、圧搾対象物の供給速度を増加させると、リングロールと内接ロールとの間に供給された圧搾対象物の一部がロール間を通過することができず、搾汁液とともに下方へ流れ出てしまう可能性がある。この結果、残渣に含まれる固形分の回収率（以下、残渣の固形回収率とも言う）が低下する。 In order to improve the compression treatment speed, it is conceivable to increase the supply amount of the compressed object per unit time (hereinafter also referred to as the supply speed of the compressed object). However, in the above-described conventional pressing device, when the supply speed of the pressing object is increased, a part of the pressing object supplied between the ring roll and the inscribed roll cannot pass between the rolls. There is a possibility that it will flow downward together with the juice. As a result, the recovery rate of the solid content contained in the residue (hereinafter also referred to as the solid recovery rate of the residue) decreases.
　本発明は、前述した事情に鑑みてなされたものであって、圧搾対象物の圧搾後の残渣の固形回収率の低下を防ぎつつ、圧搾処理速度を向上させることができる圧搾装置および圧搾方法を提供することを目的とする。 This invention is made | formed in view of the situation mentioned above, Comprising: The squeezing apparatus and squeezing method which can improve a squeeze processing speed, preventing the fall of the solid recovery rate of the residue after squeezing of a pressing target object. The purpose is to provide.
　本発明に係る圧搾装置は、回転可能に配置された第１および第２の圧搾ロールと、前記第１および第２の圧搾ロールの周面間に圧搾対象物を供給する供給部と、を備え、前記第１および第２の圧搾ロールの周面間において圧搾対象物を圧搾する圧搾装置であって、前記第１および第２の圧搾ロールのうちの少なくとも１つの周面に、前記周面の全周にわたって延び、前記圧搾対象物が進入する１以上の溝が形成されており、前記１以上の溝の前記第１または第２の圧搾ロールの軸線方向における幅の合計が、前記供給部から前記周面間に前記圧搾対象物を投入する投入幅の１５０％以下となっている。 The squeezing device according to the present invention includes first and second squeezing rolls that are rotatably arranged, and a supply unit that supplies an object to be squeezed between the peripheral surfaces of the first and second squeezing rolls. , A squeezing device that squeezes an object to be squeezed between the circumferential surfaces of the first and second squeezing rolls, wherein at least one circumferential surface of the first and second squeezing rolls One or more grooves that extend over the entire circumference and into which the compressed object enters are formed, and the total width in the axial direction of the first or second compressed roll of the one or more grooves is from the supply unit. It is 150% or less of the input width into which the compressed object is input between the peripheral surfaces.
　圧搾対象物は、第１および第２の圧搾ロールの周面間で圧搾され、圧搾対象物から搾汁液が分離される。圧搾された圧搾対象物は、第１および第２の圧搾ロールが最も近接する位置を通過した後、残渣として回収される。
　溝が形成されていない従来の圧搾装置においては、ロールの最接近点における第１および第２の圧搾ロールの周面間の距離（隙間の大きさ）が小さい。この結果、圧搾対象物の供給速度を増加させた場合に、圧搾対象物の全部を第１および第２の圧搾ロールの周面間に噛み込ませることができずに、圧搾対象物の一部がロールの最接近点を通過するまでの間に第１および第２の圧搾ロールの側部を通って下方へ脱落してしまう。 The squeezed object is squeezed between the peripheral surfaces of the first and second squeezing rolls, and the squeezed liquid is separated from the squeezed object. The squeezed object to be squeezed is recovered as a residue after passing through the position where the first and second squeezing rolls are closest.
In the conventional pressing device in which no groove is formed, the distance (size of the gap) between the peripheral surfaces of the first and second pressing rolls at the closest point of the roll is small. As a result, when the supply speed of the pressing object is increased, the entire pressing object cannot be bitten between the peripheral surfaces of the first and second pressing rolls, and a part of the pressing object is obtained. Will pass through the sides of the first and second squeeze rolls until they pass through the closest point of the roll.
　本発明に係る圧搾装置においては、第１および第２の圧搾ロールのうちの少なくとも１つの周面に、周面の全周にわたって延びる溝が形成されている。
　これにより、圧搾ロールの最接近点における第１および第２の圧搾ロールの周面間の距離が、溝が形成される分だけ大きくなる。したがって、圧搾ロールの最接近点における第１および第２の圧搾ロールの周面間の隙間が大きくなる。この結果、圧搾対象物の供給速度を増加させた場合であっても、圧搾対象物のほとんどを第１および第２の圧搾ロールの周面間に噛み込ませて、ロールの最接近点を通過させることができる。したがって、残渣の固形回収率の低下を防ぎつつ、圧搾処理速度を向上させることができる。 In the pressing device according to the present invention, a groove extending over the entire circumference of the peripheral surface is formed on at least one peripheral surface of the first and second pressing rolls.
Thereby, the distance between the surrounding surfaces of the 1st and 2nd pressing roll in the closest point of a pressing roll becomes large only by the part in which a groove | channel is formed. Therefore, the clearance gap between the surrounding surfaces of the 1st and 2nd pressing roll in the closest approach point of a pressing roll becomes large. As a result, even if the supply speed of the compressed object is increased, most of the compressed object is bitten between the peripheral surfaces of the first and second compressed rolls and passes through the closest point of the roll. Can be made. Therefore, the compression processing speed can be improved while preventing a decrease in the solid recovery rate of the residue.
　また、本発明に係る圧搾装置によれば、圧搾対象物の供給速度を変更することで、溝によって形成されるロール間の隙間に対する圧搾対象物の充填率を変えることができる。これにより、圧搾対象物の圧搾の度合いが変わり、圧搾対象物の圧搾後の残渣の含水率を所望の値に調整することができる。なお、以下、明記がない限りは、含水率は、全重量に対する水分の重量の比率を示す。
　また、本発明に係る圧搾装置によれば、溝によって形成されるロール間の隙間を予め調整することにより、例えば圧搾対象物に釘などの異物が混入していた場合であっても、このロール間の隙間が、ロール間に異物が噛み込まれた際の逃げとなり、異物による圧搾ロールの傷つき（例えば、ロールの割れ）を防止できる。 Moreover, according to the pressing apparatus which concerns on this invention, the filling rate of the pressing target object with respect to the clearance gap between the rolls formed with a groove | channel can be changed by changing the supply speed | rate of a pressing target object. Thereby, the degree of pressing of a pressing target object changes, and the moisture content of the residue after pressing of a pressing target object can be adjusted to a desired value. Hereinafter, unless otherwise specified, the moisture content indicates the ratio of the weight of water to the total weight.
Moreover, according to the pressing apparatus which concerns on this invention, even if it is a case where foreign materials, such as a nail, are mixed in the pressing target object by adjusting previously the clearance gap between the rolls formed with a groove | channel, this roll The gap between them serves as a relief when a foreign object is caught between the rolls, and can prevent the compressed roll from being damaged by the foreign object (for example, cracking of the roll).
　また、本発明に係る圧搾装置において、前記溝は、前記第１あるいは第２の圧搾ロールの回転軸線方向における中央部に形成されていてもよい。 Further, in the pressing device according to the present invention, the groove may be formed at a central portion in the rotation axis direction of the first or second pressing roll.
　この場合、両側部における第１および第２の圧搾ロールの周面間の距離が、中央部における第１および第２の圧搾ロールの周面間の距離に比べて小さくなる。すなわち、第１および第２の圧搾ロールの両側部が中央部より圧搾ロールの径方向外側へ突出している。したがって、溝（圧搾ロールの中央部）に進入した圧搾対象物が、第１および第２の圧搾ロールの両側部から脱落することをより効果的に防止できる。 In this case, the distance between the circumferential surfaces of the first and second pressing rolls on both sides is smaller than the distance between the circumferential surfaces of the first and second pressing rolls on the central portion. That is, both side portions of the first and second pressing rolls protrude outward in the radial direction of the pressing roll from the central portion. Therefore, it can prevent more effectively that the pressing target object which entered the groove | channel (central part of a pressing roll) falls out from the both sides of the 1st and 2nd pressing roll.
　また、本発明に係る圧搾装置において、前記溝は、前記周面の全周にわたって連続して形成されていてもよい。 Moreover, in the expression device according to the present invention, the groove may be formed continuously over the entire circumference of the peripheral surface.
　この場合、例えば、圧搾ロールの最接近点における第１および第２の圧搾ロールの周面間の距離を全周にわたって一定とすること等が可能になり、圧搾対象物のほとんどをより確実に圧搾ロールの周面間に噛み込ませることができる。 In this case, for example, the distance between the peripheral surfaces of the first and second pressing rolls at the closest point of the pressing roll can be made constant over the entire circumference, and most of the pressing object can be compressed more reliably. It can be bitten between the peripheral surfaces of the roll.
　また、本発明に係る圧搾装置において、前記第１の圧搾ロールは内側に空間部が形成されるリングロールであり、前記第２の圧搾ロールは前記リングロールの前記空間部に配置される内接ロールであり、前記内接ロールの外周面および前記リングロールの内周面のうちの少なくとも１つの周面に、前記溝が形成されていてもよい。 Moreover, the pressing apparatus which concerns on this invention WHEREIN: A said 1st pressing roll is a ring roll in which a space part is formed inside, and a said 2nd pressing roll is the inscribed in the said space part of the said ring roll. The groove may be formed on at least one of the outer peripheral surface of the inscribed roll and the inner peripheral surface of the ring roll.
　このように２ロール内接式の圧搾装置を採用することにより、圧搾対象物の圧搾率が向上する。したがって、高い圧搾率を確保しつつ、圧搾対象物のほとんどを第１および第２の圧搾ロールの周面間に噛み込ませることができ、圧搾処理の効率が向上する。 </ RTI> By adopting the two-roll inscribed squeezing device in this way, the squeezing rate of the squeezed object is improved. Therefore, most of the objects to be compressed can be bitten between the peripheral surfaces of the first and second pressing rolls while ensuring a high pressing rate, and the efficiency of the pressing process is improved.
　また、本発明に係る圧搾装置において、前記圧搾対象物の圧搾後の残渣の所望する含水率に応じて、前記供給部からの前記圧搾対象物の単位時間当たりに供給する質量を調整する制御部をさらに備えてもよい。 Moreover, in the pressing apparatus which concerns on this invention, the control part which adjusts the mass supplied per unit time of the said pressing target object from the said supply part according to the moisture content which the residue after the pressing of the said pressing target object desires. May be further provided.
　この場合、残渣の含水率を、例えば残渣をそのまま燃料等として用いるのに適した値（例えば、３０～５０％）に調整することができ、残渣を使用するための処理が簡略になる。 In this case, the moisture content of the residue can be adjusted to a value (for example, 30 to 50%) suitable for using the residue as a fuel or the like as it is, and the processing for using the residue is simplified.
　本発明に係る圧搾方法は、上記圧搾装置により前記圧搾対象物を圧搾する圧搾方法であって、前記圧搾対象物を前記第１および第２の圧搾ロールの前記周面間に供給する供給工程と、前記圧搾対象物を前記周面間で圧搾する圧搾工程と、前記圧搾工程後に、前記第１および第２の圧搾ロールが最も近接する位置を通過した前記圧搾対象物の圧搾後の残渣を回収する回収工程と、を備え、前記圧搾工程の際、前記圧搾対象物を前記溝に進入させることを特徴とする。 The squeezing method according to the present invention is a squeezing method in which the squeezing object is squeezed by the squeezing device, wherein the squeezing object is supplied between the peripheral surfaces of the first and second squeezing rolls; The squeezing step of squeezing the squeezed object between the peripheral surfaces, and the squeezed residue of the squeezed object that has passed through the position where the first and second squeezing rolls are closest to each other after the squeezing step A collecting step, and the pressing object is caused to enter the groove during the pressing step.
　また、本発明に係る圧搾方法において、前記供給工程では、前記残渣の所望する含水率に応じて、前記圧搾対象物の単位時間当たりに供給する質量を調整してもよい。 Moreover, in the pressing method according to the present invention, in the supplying step, the mass supplied per unit time of the pressing object may be adjusted according to the desired moisture content of the residue.
　本発明によれば、圧搾対象物の圧搾後の残渣の固形回収率の低下を防ぎつつ、圧搾処理速度を向上させることができる圧搾装置および圧搾方法を提供することができる。 According to the present invention, it is possible to provide a squeezing device and a squeezing method that can improve the squeezing speed while preventing a decrease in the solid recovery rate of the residue after squeezing the object to be squeezed.
本発明の一実施形態に係る圧搾装置の概略正面図である。It is a schematic front view of the expression equipment concerning one embodiment of the present invention. 図１に示すＩＩ－ＩＩ矢視断面図である。FIG. 2 is a cross-sectional view taken along the line II-II shown in FIG. 本発明の一実施形態に係る圧搾装置のリングロールおよび内接ロールの拡大断面図である。It is an expanded sectional view of a ring roll and an inscribed roll of a pressing device concerning one embodiment of the present invention. 本発明の一実施形態に係る圧搾装置のリングロールの支持状態およびリングロールの周辺の部材を示す正面図である。It is a front view which shows the support state of the ring roll of the pressing device which concerns on one Embodiment of this invention, and the surrounding member of a ring roll. 本発明の一実施形態に係る圧搾工程および回収工程を説明するための図である。It is a figure for demonstrating the expression process and collection | recovery process which concern on one Embodiment of this invention. 本発明の一実施形態の変形例の圧搾装置の斜視図である。It is a perspective view of the pressing device of the modification of one Embodiment of this invention.
　以下、図面を参照し、本発明の一実施形態に係る圧搾装置を説明する。 Hereinafter, a pressing device according to an embodiment of the present invention will be described with reference to the drawings.
　図１～図４は本発明の一実施形態に係る圧搾装置１０を示す。図１は圧搾装置１０の概略正面図である。図２は図１に示すＩＩ－ＩＩ矢視断面図である。図３は圧搾装置１０のリングロール２および内接ロール３の拡大断面図である。図４は圧搾装置１０のリングロール２の支持状態およびリングロール２の周辺の部材を示す正面図である。 1 to 4 show a pressing device 10 according to an embodiment of the present invention. FIG. 1 is a schematic front view of the pressing device 10. 2 is a cross-sectional view taken along the line II-II shown in FIG. FIG. 3 is an enlarged cross-sectional view of the ring roll 2 and the inscribed roll 3 of the pressing device 10. FIG. 4 is a front view showing a support state of the ring roll 2 of the pressing device 10 and members around the ring roll 2.
　図１に示すように、本実施形態の圧搾装置１０は、フレーム１と、リングロール２（第１の圧搾ロール）と、内接ロール３（第２の圧搾ロール）と、押圧ロール４とを備える。
　リングロール２は、フレーム１によって上下動可能かつ第１の回転軸線回りに回転可能に支持される。内接ロール３は、リングロール２の内側に形成された円柱状の空間部２Ａに配置され、第１の回転軸線と平行に配置された第２の回転軸線回りに回転する。押圧ロール４は、リングロール２の下方に配置されてリングロール２の外周面を押圧し、第１の回転軸線と平行に配置された第３の回転軸線回りに回転する。
　リングロール２、内接ロール３、押圧ロール４は、図１に示すようにそれぞれの回転軸線方向から見た際、リングロール２の回転中心と、内接ロール３の回転中心と、押圧ロール４の回転中心とが、同一の線Ｌ上に位置するように配置されている。なお、線Ｌは、リングロール２、内接ロール３及び押圧ロール４における各回転軸線に対して直交する方向に延びている。
　なお、本実施形態では、図１および図２を基準にして圧搾装置１０の前後左右を定義する。図１および図２におけるＸａ方向を左方、Ｘｂ方向を右方、Ｙａ方向を前方、Ｙｂ方向を後方と規定する。 As shown in FIG. 1, the pressing device 10 of this embodiment includes a frame 1, a ring roll 2 (first pressing roll), an inscribed roll 3 (second pressing roll), and a pressing roll 4. Prepare.
The ring roll 2 is supported by the frame 1 so as to be movable up and down and rotatable about the first rotation axis. The inscribed roll 3 is arranged in a cylindrical space 2A formed inside the ring roll 2 and rotates around a second rotation axis arranged in parallel with the first rotation axis. The pressing roll 4 is disposed below the ring roll 2 to press the outer peripheral surface of the ring roll 2 and rotates around a third rotation axis that is disposed in parallel with the first rotation axis.
As shown in FIG. 1, the ring roll 2, the inscribed roll 3, and the pressing roll 4 have a rotation center of the ring roll 2, a rotation center of the inscribed roll 3, and a pressing roll 4 when viewed from the respective rotation axis directions. Are arranged so as to be located on the same line L. Note that the line L extends in a direction orthogonal to the rotation axes of the ring roll 2, the inscribed roll 3, and the pressing roll 4.
In the present embodiment, front, rear, left and right of the pressing device 10 are defined with reference to FIGS. 1 and 2. The Xa direction in FIGS. 1 and 2 is defined as the left side, the Xb direction is defined as the right side, the Ya direction is defined as the front side, and the Yb direction is defined as the rear side.
　フレーム１は、底板部１１と、底板部１１上に立設された柱部１２とを備える。 The frame 1 includes a bottom plate portion 11 and a column portion 12 erected on the bottom plate portion 11.
　リングロール２は、リングロール２の前後に配置された不図示の支持部材により、前後方向の移動が規制されるように支持されている。
　また、図４に示すように、リングロール２の左側下部は、フレーム１に対して固定位置に取り付けられている固定ロール１８によって支持されている。リングロール２の右側下部は、上下方向へ移動可能な可動ロール１９によって支持されている。これにより、リングロール２は、左右方向の移動が規制されつつ上下方向への移動が可能となるように支持されている。
　可動ロール１９は、ロール支持部２１に支持されている。ロール支持部２１は、フレーム１の柱部１２に弾性部材２０を介して上下動自在に支持されている。ロール支持部２１は、フレーム１の柱部１２に弾性部材２０を介して支持されつつ、ボルト２２により左右方向の移動が規制されており、ボルト２２と、ボルト２２が挿通されるロール支持部２１の挿通孔との間に形成される隙間分だけ、フレーム１に対し上下方向へ移動可能とされている。 The ring roll 2 is supported by a support member (not shown) arranged before and after the ring roll 2 so that movement in the front-rear direction is restricted.
As shown in FIG. 4, the lower left portion of the ring roll 2 is supported by a fixed roll 18 attached to the frame 1 at a fixed position. The lower right portion of the ring roll 2 is supported by a movable roll 19 that can move in the vertical direction. Thereby, the ring roll 2 is supported so that the movement in the up-down direction is possible while the movement in the left-right direction is restricted.
The movable roll 19 is supported by the roll support portion 21. The roll support portion 21 is supported by the column portion 12 of the frame 1 via the elastic member 20 so as to be movable up and down. The roll support portion 21 is supported by the column portion 12 of the frame 1 via the elastic member 20, and the movement in the left-right direction is restricted by the bolt 22. The bolt 22 and the roll support portion 21 through which the bolt 22 is inserted. It is possible to move in the vertical direction with respect to the frame 1 by a gap formed between the insertion hole and the insertion hole.
　図２に示すように、内接ロール３は、前後方向に延びる一対の小径軸部３ｅを有する。
　一対の小径軸部３ｅは、フレーム１の柱部１２に取り付けられる軸受けブロック２６に、軸受け２５を介して支持されている。これにより、内接ロール３は予め定められた位置に、回転可能に配設される。 As shown in FIG. 2, the inscribed roll 3 has a pair of small diameter shaft portions 3e extending in the front-rear direction.
The pair of small-diameter shaft portions 3 e are supported via a bearing 25 on a bearing block 26 attached to the column portion 12 of the frame 1. Thereby, the inscribed roll 3 is rotatably disposed at a predetermined position.
　内接ロール３の後方にはカップリング２７を介して回転軸２８が連結され、回転軸２８にはモータ等の駆動部２９が連結される。駆動部２９の回転が、回転軸２８を介して内接ロール３に伝わることにより、内接ロール３は第２の回転軸線回りに回転する。 A rotating shaft 28 is connected to the rear side of the inscribed roll 3 through a coupling 27, and a driving unit 29 such as a motor is connected to the rotating shaft 28. When the rotation of the drive unit 29 is transmitted to the inscribed roll 3 through the rotation shaft 28, the inscribed roll 3 rotates around the second rotation axis.
　図２に示すように、押圧ロール４は、前後方向に延びる一対の小径軸部４ａを有する。
　一対の小径軸部４ａは、フレーム１の柱部１２に上下動可能に支持される軸受けブロック３２に、軸受け３１を介して支持されている。
　また、軸受けブロック３２とフレーム１の底板部１１との間には、軸受けブロック３２を上方へ押圧する押圧シリンダ３３が設けられる。押圧シリンダ３３は、軸受けブロック３２を介して押圧ロール４を、上方すなわちリングロール２側へ押圧する。 As shown in FIG. 2, the pressing roll 4 has a pair of small diameter shaft portions 4a extending in the front-rear direction.
The pair of small-diameter shaft portions 4 a are supported via bearings 31 on bearing blocks 32 that are supported by the column portions 12 of the frame 1 so as to be movable up and down.
A pressing cylinder 33 that presses the bearing block 32 upward is provided between the bearing block 32 and the bottom plate portion 11 of the frame 1. The pressing cylinder 33 presses the pressing roll 4 upward, that is, toward the ring roll 2 via the bearing block 32.
　押圧ロール４の後方にはカップリング３４を介して回転軸３５が連結され、回転軸３５にはモータ等の駆動部３６が連結される。駆動部３６の回転が、回転軸３５を介して押圧ロール４に伝わることにより、押圧ロール４は第３の回転軸線回りに回転する。さらに、押圧シリンダ３３が押圧ロール４をリングロール２側へ押圧することで、押圧ロール４の回転が摩擦によりリングロール２に伝達し、リングロール２もまた第１の回転軸線回りに回転する。 A rotating shaft 35 is connected to the rear of the pressing roll 4 via a coupling 34, and a driving unit 36 such as a motor is connected to the rotating shaft 35. When the rotation of the drive unit 36 is transmitted to the pressing roll 4 via the rotating shaft 35, the pressing roll 4 rotates around the third rotation axis. Furthermore, when the pressing cylinder 33 presses the pressing roll 4 toward the ring roll 2, the rotation of the pressing roll 4 is transmitted to the ring roll 2 by friction, and the ring roll 2 also rotates around the first rotation axis.
　図３に示すように、リングロール２の内周面２ａには、内周面２ａの全周にわたって延びる溝２ｂが形成されている。溝２ｂは、内周面２ａの全周にわたって連続して形成されている。溝２ｂの深さは、全周にわたって同等とされている。また、溝２ｂは、リングロール２の第１の回転軸線方向（すなわち、図２に示される前後方向）における中央部２ｃに形成されており、両側部２ｄには形成されていない。溝２ｂは、第１の回転軸線方向に沿う断面視において等脚台形状に形成されている。溝２ｂは、リングロール２の径方向の内側から外側に向かうに従い、徐々に狭くなっている。 As shown in FIG. 3, the inner peripheral surface 2a of the ring roll 2 is formed with a groove 2b extending over the entire circumference of the inner peripheral surface 2a. The groove 2b is formed continuously over the entire circumference of the inner peripheral surface 2a. The depth of the groove 2b is the same over the entire circumference. Further, the groove 2b is formed in the central portion 2c in the first rotation axis direction of the ring roll 2 (that is, the front-rear direction shown in FIG. 2), and is not formed in the both side portions 2d. The groove 2b is formed in an isosceles trapezoidal shape in a cross-sectional view along the first rotation axis direction. The groove 2b is gradually narrowed from the inside in the radial direction of the ring roll 2 toward the outside.
　内接ロール３の外周面３ａには、外周面３ａの全周にわたって延びる溝３ｂが形成されている。溝３ｂは、外周面３ａの全周にわたって連続して形成されている。溝３ｂの深さは、全周にわたって同等とされている。また、溝３ｂは、内接ロール３の第２の回転軸線方向（すなわち、図２に示される前後方向）における中央部３ｃに形成されており、両側部３ｄには形成されていない。溝３ｂは、第２の回転軸線方向に沿う断面視において等脚台形状に形成されている。溝３ｂは、内接ロール３の径方向の内側から外側に向かうに従い、徐々に広くなっている。 On the outer peripheral surface 3a of the inscribed roll 3, a groove 3b extending over the entire circumference of the outer peripheral surface 3a is formed. The groove 3b is formed continuously over the entire circumference of the outer peripheral surface 3a. The depth of the groove 3b is the same over the entire circumference. Further, the groove 3b is formed in the central portion 3c in the second rotation axis direction of the inscribed roll 3 (that is, the front-rear direction shown in FIG. 2), and is not formed in the both side portions 3d. The groove 3b is formed in an isosceles trapezoidal shape in a cross-sectional view along the second rotation axis direction. The groove 3b gradually becomes wider from the inner side to the outer side in the radial direction of the inscribed roll 3.
　圧搾対象物Ｗ１の圧搾を開始する前の初期状態では、リングロール２と内接ロール３とが最も接近する位置（以下、ロールの最接近点とも称する）において、リングロール２の両側部２ｄと内接ロール３の両側部３ｄとは接している。なお、本実施形態においては、ロールの最接近点は、内接ロール３の最下点に位置する。一方、リングロール２の中央部２ｃと内接ロール３の中央部３ｃとの間には、溝２ｂ、３ｂが形成されることにより隙間が形成される。これにより、初期状態でのロールの最接近点におけるリングロール２の内周面２ａと内接ロール３の外周面３ａとの間の隙間の、圧搾対象物Ｗ１の通過方向を向く開口面積（すなわち、リングロール２の内周面２ａと内接ロール３の外周面３ａとの間の隙間の、リングロール２の第１の回転軸線と、内接ロール３の第２の回転軸線とを通る平面における開口面積）が大きくなる。なお、圧搾対象物Ｗ１の通過方向は、リングロール２および内接ロール３の周方向となっている。 In the initial state before starting to squeeze the object to be compressed W1, at the position where the ring roll 2 and the inscribed roll 3 are closest (hereinafter also referred to as the closest point of the roll), both side portions 2d of the ring roll 2 The both side portions 3d of the inscribed roll 3 are in contact with each other. In the present embodiment, the closest approach point of the roll is located at the lowest point of the inscribed roll 3. On the other hand, a gap is formed between the central portion 2c of the ring roll 2 and the central portion 3c of the inscribed roll 3 by forming grooves 2b and 3b. Thereby, in the gap between the inner peripheral surface 2a of the ring roll 2 and the outer peripheral surface 3a of the inscribed roll 3 at the closest point of the roll in the initial state, the opening area facing the passing direction of the pressing object W1 (that is, A plane passing through the first rotation axis of the ring roll 2 and the second rotation axis of the inscribed roll 3 in the gap between the inner peripheral surface 2a of the ring roll 2 and the outer peripheral surface 3a of the inscribed roll 3 (Opening area) increases. In addition, the passing direction of the pressing object W1 is the circumferential direction of the ring roll 2 and the inscribed roll 3.
　初期状態でのロールの最接近点におけるリングロール２の中央部２ｃと内接ロール３の中央部３ｃとの間の隙間の大きさＭ（以下、初期状態での中央部２ｃと中央部３ｃとの間の隙間の大きさＭ、あるいは単に隙間の大きさＭとも称する）は、１．５ｍｍ以下であることが好ましい。なお、隙間の大きさＭは、前記隙間についての、リングロール２の第１の回転軸線および内接ロール３の第２の回転軸線に直交する方向（本実施形態においては、上下方向）における大きさである。隙間の大きさＭが１．５ｍｍより大きいと、圧搾対象物Ｗ１の圧搾に要する駆動部２９および駆動部３６の仕事量が大きくなり過ぎたり、圧搾対象物Ｗ１の圧搾後の残渣Ｗ３の吸引回収に要する後述する吸引部５５の仕事量が大きくなり過ぎたりする。また、隙間の大きさＭの下限は０．２ｍｍとすることができるが、０．２ｍｍ以下であってもよい。
　また、溝２ｂ、３ｂのロールの軸線方向（Ｙ軸方向）の幅は、後述する供給部４８からリングロール２と内接ロール３との間に圧搾対象物Ｗ１を投入する投入幅ｗ（ロールの軸線方向の所定の幅）の５０～１５０％であることが好ましい。 The size M of the gap between the central portion 2c of the ring roll 2 and the central portion 3c of the inscribed roll 3 at the closest point of the roll in the initial state (hereinafter, the central portion 2c and the central portion 3c in the initial state) The size of the gap M between the two is also referred to as the gap size M) is preferably 1.5 mm or less. The size M of the gap is a size in the direction (vertical direction in the present embodiment) perpendicular to the first rotation axis of the ring roll 2 and the second rotation axis of the inscribed roll 3 with respect to the gap. That's it. When the size M of the gap is larger than 1.5 mm, the work amount of the drive unit 29 and the drive unit 36 required for the compression of the compressed object W1 becomes too large, or the suction recovery of the residue W3 after the compressed object W1 is compressed. The amount of work of a suction unit 55 (described later) required for this will become too large. Moreover, although the minimum of the magnitude | size M of a clearance gap can be 0.2 mm, 0.2 mm or less may be sufficient.
Further, the width of the rolls in the grooves 2b and 3b in the axial direction (Y-axis direction) is the input width w (roll) in which the squeezed object W1 is introduced between the ring roll 2 and the inscribed roll 3 from the supply unit 48 described later. Of the predetermined width in the axial direction) is preferably 50 to 150%.
　図４に示すように、リングロール２の内側に形成された空間部２Ａの下部は、内接ロール３によって２分される。内接ロール３の左側（すなわち、ロールの最接近点よりも圧搾対象物Ｗ１の通過方向における上流側）が、圧搾対象物投入部４０となり、内接ロール３の右側（すなわち、ロールの最接近点よりも圧搾対象物Ｗ１の通過方向における下流側）が、圧搾後の残渣Ｗ３が回収される残渣回収部４１となる。
　圧搾対象物投入部４０には供給部４８が接続されている。圧搾対象物Ｗ１は供給部４８から圧搾対象物投入部４０に供給される。また、供給部４８には制御部４９が接続されている。制御部４９は、圧搾後の残渣Ｗ３の所望する含水率に応じて、供給部４８からの圧搾対象物Ｗ１の供給速度を調整する。
　残渣回収部４１には吸引部５５が接続されている。吸引部５５によって残渣回収部４１に排出される残渣Ｗ３が吸引回収される。 As shown in FIG. 4, the lower portion of the space 2 </ b> A formed inside the ring roll 2 is divided into two by the inscribed roll 3. The left side of the inscribed roll 3 (that is, the upstream side in the passing direction of the compressed object W1 from the closest point of the roll) becomes the compressed object input unit 40, and the right side of the inscribed roll 3 (that is, the closest approach of the roll). The downstream side in the direction of passage of the compressed object W1 from the point becomes the residue collection unit 41 from which the residue W3 after compression is collected.
A supply unit 48 is connected to the pressing object input unit 40. The compressed object W1 is supplied from the supply unit 48 to the compressed object input unit 40. A control unit 49 is connected to the supply unit 48. The control part 49 adjusts the supply speed | rate of the pressing target object W1 from the supply part 48 according to the moisture content which the residue W3 after a compression desires.
A suction unit 55 is connected to the residue collection unit 41. The residue W3 discharged to the residue collection unit 41 by the suction unit 55 is collected by suction.
　次に、上記構成の圧搾装置１０の作用について説明する。
　まず、内接ロール３が駆動部２９により所定方向へ回転される。また、押圧ロール４が押圧シリンダ３３により上方のリングロール２側へ押圧される。この状態で、押圧ロール４が駆動部３６により内接ロール３の回転とは逆方向へ回転されると、押圧ロール４の回転がリングロール２に伝達され、リングロール２が内接ロール３の回転と同一方向へ回転される。
　圧搾対象物Ｗ１が供給部４８から圧搾対象物投入部４０へ投入されると、圧搾対象物Ｗ１は同一方向へ回転するリングロール２の内周面２ａと内接ロール３の外周面３ａとの間に供給される（供給工程）。圧搾対象物Ｗ１は、リングロール２の内周面２ａと内接ロール３の外周面３ａとの間で圧搾され、圧搾対象物Ｗ１から搾汁液Ｗ２が分離される（圧搾工程）。なお、圧搾工程の際には、溝２ｂ、３ｂに、圧搾対象物Ｗ１（圧搾対象物Ｗ１の固形分）が進入する。搾汁液Ｗ２は、ロールの最接近点よりも圧搾対象物投入部４０側において、下方へ流れ出て回収される。また、圧搾後の残渣Ｗ３は、圧搾対象物投入部４０とはロールの最接近点を間に挟んだ反対側に位置する残渣回収部４１へ排出され、吸引部５５により吸引回収される（回収工程）。
　なお、圧搾対象物Ｗ１の圧搾を開始する前の初期状態では、ロールの最接近点において、リングロール２の両側部２ｄと内接ロール３の両側部３ｄとは接しているが、圧搾工程においては、圧搾対象物Ｗ１により、リングロール２の両側部２ｄと内接ロール３の両側部３ｄとの間にも隙間ができる。 Next, the effect | action of the pressing apparatus 10 of the said structure is demonstrated.
First, the inscribed roll 3 is rotated in a predetermined direction by the drive unit 29. Further, the pressing roll 4 is pressed by the pressing cylinder 33 toward the upper ring roll 2 side. In this state, when the pressing roll 4 is rotated in the direction opposite to the rotation of the inscribed roll 3 by the driving unit 36, the rotation of the pressing roll 4 is transmitted to the ring roll 2, and the ring roll 2 is moved to the inscribed roll 3. It is rotated in the same direction as the rotation.
When the compressed object W1 is input from the supply unit 48 to the compressed object input unit 40, the compressed object W1 is formed between the inner peripheral surface 2a of the ring roll 2 and the outer peripheral surface 3a of the inscribed roll 3 that rotate in the same direction. Supplied in between (supply process). The pressing object W1 is compressed between the inner peripheral surface 2a of the ring roll 2 and the outer peripheral surface 3a of the inscribed roll 3, and the squeezed liquid W2 is separated from the pressing target object W1 (squeezing step). In addition, in the case of a pressing process, the pressing target object W1 (solid content of the pressing target object W1) enters into the grooves 2b and 3b. The squeezed liquid W2 flows downward and is collected on the side of the squeeze object input unit 40 from the closest point of the roll. Moreover, the residue W3 after pressing is discharged to the residue collecting unit 41 located on the opposite side of the pressing object input unit 40 across the closest point of the roll, and is sucked and collected by the suction unit 55 (recovery) Process).
In addition, in the initial state before starting the pressing of the pressing target object W1, the both side parts 2d of the ring roll 2 and the both side parts 3d of the inscribed roll 3 are in contact at the closest point of the roll. The squeezing object W1 also creates a gap between both side portions 2d of the ring roll 2 and both side portions 3d of the inscribed roll 3.
　圧搾工程および回収工程について、図５を参照して詳細に説明する。
　圧搾対象物Ｗ１の上下方向における厚みがＴ１となる点Ｐ１（左右方向の特定の位置Ｐ１）において、圧搾対象物Ｗ１を圧搾する圧搾工程が開始する。以下、厚みＴ１を投入厚みＴ１とも言う。
　投入厚みＴ１及び点Ｐ１は、供給部４８から圧搾対象物投入部４０に単位時間当たりに供給する圧搾対象物Ｗ１の質量（以下、圧搾対象物Ｗ１の供給速度とも言う）Ｖと、内接ロール３の外径Ｄと、内接ロール３の回転速度Ｒと、圧搾対象物Ｗ１の圧搾前の嵩密度γと、圧搾対象物Ｗ１の投入幅ｗとに基づき一義的に決まる。具体的には、投入厚みＴ１は（１）式から求められる。ただし、πは円周率である。
　Ｔ１＝Ｖ／（ｗ×π×Ｄ×Ｒ×γ）　・・（１）
　投入厚みＴ１が決まれば、点Ｐ１の位置は一義的に決まる。 The pressing process and the recovery process will be described in detail with reference to FIG.
At the point P1 (specific position P1 in the left-right direction) at which the thickness in the vertical direction of the compression target W1 is T1, a pressing process for pressing the compression target W1 starts. Hereinafter, the thickness T1 is also referred to as the input thickness T1.
The input thickness T1 and the point P1 are the mass V of the compressed object W1 supplied per unit time from the supply unit 48 to the compressed object input unit 40 (hereinafter also referred to as the supply speed of the compressed object W1) V, and the inscribed roll 3 is uniquely determined based on the outer diameter D of 3, the rotational speed R of the inscribed roll 3, the bulk density γ before pressing the compressed object W1, and the input width w of the compressed object W1. Specifically, the input thickness T1 is obtained from the equation (1). Here, π is the circumference ratio.
T1 = V / (w × π × D × R × γ) (1)
If the input thickness T1 is determined, the position of the point P1 is uniquely determined.
　点Ｐ１から、リングロール２と内接ロール３とが最も接近する位置（ロールの最接近点）である点Ｐ２までは、圧搾対象物Ｗ１がリングロール２の内周面２ａと内接ロール３の外周面３ａとの間で圧搾されることにより、圧搾対象物Ｗ１から搾汁液Ｗ２が抜ける圧搾工程が行われる。
　点Ｐ１から点Ｐ２の間においては、圧搾対象物Ｗ１は搾汁液Ｗ２を含んでいるため、リングロール２の内周面２ａと内接ロール３の外周面３ａの距離が縮まるにつれて圧縮されることで搾汁液Ｗ２が圧搾対象物Ｗ１から分離する。 From the point P1 to the point P2, which is the position at which the ring roll 2 and the inscribed roll 3 are closest to each other (the closest point of the roll), the inner peripheral surface 2a of the ring roll 2 and the inscribed roll 3 By pressing between the outer peripheral surface 3a, the squeezing step in which the squeezed liquid W2 is removed from the squeezed object W1 is performed.
Between the point P1 and the point P2, since the pressing target object W1 contains the squeezed liquid W2, it is compressed as the distance between the inner peripheral surface 2a of the ring roll 2 and the outer peripheral surface 3a of the inscribed roll 3 decreases. The squeezed liquid W2 is separated from the squeezed object W1.
　一般的に、ロール間を通過することができる圧搾対象物Ｗ１の厚みの上限値（限界値）Ｔ２は、圧搾対象物Ｗ１とリングロール２及び内接ロール３との間の摩擦係数と、リングロール２に対する内接ロール３の径比、内接ロール３の外径Ｄに基づき一義的に決まる。
　より詳細には、厚みの上限値Ｔ２と、圧搾対象物Ｗ１とリングロール２及び内接ロール３との間の摩擦係数とは正の相関があり、圧搾対象物Ｗ１とリングロール２及び内接ロール３との間の摩擦係数が大きくなると、厚みの上限値Ｔ２は大きくなる。また、リングロール２に対する内接ロール３の径比が大きくなると、厚みの上限値Ｔ２は大きくなる。さらに、内接ロール３の外径が大きくなると、厚みの上限値Ｔ２は大きくなる。 Generally, the upper limit (limit value) T2 of the thickness of the compressed object W1 that can pass between the rolls is the friction coefficient between the compressed object W1, the ring roll 2 and the inscribed roll 3, and the ring. It is uniquely determined based on the diameter ratio of the inscribed roll 3 to the roll 2 and the outer diameter D of the inscribed roll 3.
More specifically, there is a positive correlation between the upper limit value T2 of the thickness and the friction coefficient between the compressed object W1, the ring roll 2 and the inscribed roll 3, and the compressed object W1, the ring roll 2 and the inscribed line When the coefficient of friction with the roll 3 increases, the upper limit value T2 of the thickness increases. Further, when the diameter ratio of the inscribed roll 3 to the ring roll 2 is increased, the upper limit value T2 of the thickness is increased. Further, when the outer diameter of the inscribed roll 3 is increased, the upper limit value T2 of the thickness is increased.
　圧搾対象物Ｗ１の投入厚みＴ１が厚みの上限値Ｔ２以下の場合、圧搾対象物Ｗ１はロール間に摩擦によって噛み込まれることで、ロールの最接近点である点Ｐ２を通過して、残渣回収部４１へ搬送される。
　一方で、圧搾対象物Ｗ１の投入厚みＴ１が厚みの上限値Ｔ２を超える場合、上限値Ｔ２を超えた厚み分の圧搾対象物Ｗ１は摩擦によってロール間に噛み込まれず、搾汁液Ｗ２とともに下方へ流出する。 When the input thickness T1 of the compressed object W1 is equal to or less than the upper limit T2 of the thickness, the compressed object W1 is bitten by friction between the rolls, and passes through the point P2, which is the closest point of the roll, to collect the residue. It is conveyed to the section 41.
On the other hand, when the input thickness T1 of the squeezed object W1 exceeds the upper limit value T2, the squeezed object W1 having a thickness exceeding the upper limit value T2 is not bitten between the rolls by friction, and moves downward together with the juice liquid W2. leak.
　溝が形成されていない従来の圧搾装置においては、ロールの最接近点Ｐ２におけるリングロールと内接ロールとの間の距離（隙間の大きさ）が小さい。この結果、圧搾対象物Ｗ１の供給速度を増加させた場合に、圧搾対象物Ｗ１の全部をリングロールと内接ロールとの間に噛み込ませることができずに、圧搾対象物Ｗ１の一部がロールの最接近点Ｐ２を通過するまでの間にリングロールおよび内接ロールの側部を通って下方へ脱落してしまう。 In the conventional pressing device in which no groove is formed, the distance (size of the gap) between the ring roll and the inscribed roll at the closest point P2 of the roll is small. As a result, when the supply speed of the pressing target object W1 is increased, the entire pressing target object W1 cannot be bitten between the ring roll and the inscribed roll, and a part of the pressing target object W1. Will pass through the side of the ring roll and the inscribed roll until it passes through the closest point P2 of the roll.
　本実施形態の圧搾装置１０においては、リングロール２の内周面２ａおよび内接ロール３の外周面３ａに、周面の全周にわたって延び、圧搾対象物Ｗ１が進入する溝２ｂ、３ｂが形成されている。
　これにより、ロールの最接近点Ｐ２におけるリングロール２の内周面２ａと内接ロール３の外周面３ａとの間の距離が、溝２ｂ、３ｂが形成される分だけ大きくなる。したがって、ロールの最接近点Ｐ２におけるリングロール２の内周面２ａと内接ロール３の外周面３ａとの間の隙間が大きくなる。この結果、圧搾対象物Ｗ１の供給速度を増加させた場合であっても、圧搾対象物Ｗ１のほとんどをリングロール２の内周面２ａと内接ロール３の外周面３ａとの間に噛み込ませて、ロールの最接近点Ｐ２を通過させることができる。
　したがって、残渣Ｗ３の固形回収率の低下を防ぎつつ、圧搾処理速度を向上させることができる。なお、ここで言う残渣Ｗ３の固形回収率は、供給した圧搾対象物Ｗ１に含まれる固形分の質量に対する、回収された残渣Ｗ３に含まれる固形分の質量の比率を意味する。 In the squeezing device 10 of the present embodiment, grooves 2b and 3b that extend over the entire circumference of the inner peripheral surface 2a of the ring roll 2 and the outer peripheral surface 3a of the inscribed roll 3 and into which the compressed object W1 enters are formed. Has been.
As a result, the distance between the inner peripheral surface 2a of the ring roll 2 and the outer peripheral surface 3a of the inscribed roll 3 at the closest point P2 of the roll is increased by the formation of the grooves 2b and 3b. Therefore, the clearance gap between the inner peripheral surface 2a of the ring roll 2 and the outer peripheral surface 3a of the inscribed roll 3 in the closest point P2 of a roll becomes large. As a result, even if the supply speed of the compressed object W1 is increased, most of the compressed object W1 is bitten between the inner peripheral surface 2a of the ring roll 2 and the outer peripheral surface 3a of the inscribed roll 3. It is possible to pass the closest point P2 of the roll.
Therefore, the compression processing speed can be improved while preventing a decrease in the solid recovery rate of the residue W3. In addition, the solid recovery rate of the residue W3 said here means the ratio of the mass of the solid content contained in the collect | recovered residue W3 with respect to the mass of the solid content contained in the supplied pressing target W1.
　また、本実施形態の圧搾装置１０によれば、圧搾対象物Ｗ１の供給速度を変更することで、溝２ｂ、３ｂによって形成されるロール間の隙間に対する圧搾対象物Ｗ１の充填率を変えることができる。これにより、圧搾対象物Ｗ１の圧搾の度合いが変わり、圧搾対象物Ｗ１の圧搾後の残渣Ｗ３の含水率を所定の値に調整することができる。
　また、本実施形態の圧搾装置１０によれば、溝２ｂ、３ｂによって形成されるロール間の隙間を予め調整することにより、例えば圧搾対象物Ｗ１に釘などの異物が混入していた場合であっても、このロール間の隙間が、ロール間に異物が噛み込まれた際の逃げとなり、異物によるリングロール２および内接ロール３の傷つき（例えば、ロールの割れ）を防止できる。 Moreover, according to the pressing apparatus 10 of this embodiment, the filling rate of the pressing target object W1 with respect to the clearance gap between the rolls formed by the grooves 2b and 3b can be changed by changing the supply speed of the pressing target object W1. it can. Thereby, the degree of pressing of the pressing target object W1 changes, and the moisture content of the residue W3 after pressing the pressing target object W1 can be adjusted to a predetermined value.
Moreover, according to the pressing apparatus 10 of this embodiment, it is a case where foreign objects, such as a nail, were mixed in the pressing target object W1, for example, by adjusting the clearance gap between the rolls formed by the grooves 2b and 3b in advance. However, the gap between the rolls serves as a relief when a foreign matter is caught between the rolls, and damage to the ring roll 2 and the inscribed roll 3 due to the foreign matter (for example, cracking of the roll) can be prevented.
　また、本実施形態においては、溝２ｂはリングロール２の第１の回転軸線方向における中央部２ｃに形成されており、溝３ｂは内接ロール３の第２の回転軸線方向における中央部３ｃに形成されている。
　これにより、両側部２ｄ、３ｄにおけるリングロール２の内周面２ａと内接ロール３の外周面３ａとの間の距離が、中央部２ｃ、３ｃにおけるリングロール２の内周面２ａと内接ロール３の外周面３ａとの間の距離に比べて小さくなる。すなわち、両側部２ｄ、３ｄが中央部２ｃ、３ｃよりリングロール２および内接ロール３の径方向外側へ突出している。したがって、溝２ｂ、３ｂ（中央部２ｃ、３ｃ）に進入した圧搾対象物Ｗ１が、両側部２ｄ、３ｄから脱落することをより効果的に防止できる。 In the present embodiment, the groove 2b is formed in the central portion 2c of the ring roll 2 in the first rotational axis direction, and the groove 3b is formed in the central portion 3c of the inscribed roll 3 in the second rotational axis direction. Is formed.
Thereby, the distance between the inner peripheral surface 2a of the ring roll 2 and the outer peripheral surface 3a of the inscribed roll 3 at both side portions 2d and 3d is the same as the inner peripheral surface 2a of the ring roll 2 at the center portions 2c and 3c. The distance is smaller than the distance between the roll 3 and the outer peripheral surface 3a. That is, both side portions 2d and 3d protrude outward in the radial direction of the ring roll 2 and the inscribed roll 3 from the central portions 2c and 3c. Therefore, it can prevent more effectively that the pressing target object W1 which entered into the groove | channels 2b and 3b ( center part 2c, 3c) falls out from both sides 2d and 3d.
　また、本実施形態においては、溝２ｂは内周面２ａの全周にわたって連続して形成されており、溝３ｂは外周面３ａの全周にわたって連続して形成されている。
　これにより、例えば、ロールの最接近点Ｐ２におけるリングロール２の内周面２ａと内接ロール３の外周面３ａとの間の距離を全周にわたって一定とすること等が可能になり、圧搾対象物Ｗ１のほとんどをより確実にリングロール２の内周面２ａと内接ロール３の外周面３ａとの間に噛み込ませることができる。 Moreover, in this embodiment, the groove | channel 2b is formed continuously over the perimeter of the internal peripheral surface 2a, and the groove | channel 3b is formed continuously over the perimeter of the outer peripheral surface 3a.
Thereby, for example, the distance between the inner peripheral surface 2a of the ring roll 2 and the outer peripheral surface 3a of the inscribed roll 3 at the closest point P2 of the roll can be made constant over the entire periphery, and the like. Most of the object W1 can be more reliably caught between the inner peripheral surface 2a of the ring roll 2 and the outer peripheral surface 3a of the inscribed roll 3.
　また、本実施形態においては、圧搾装置として、内側に空間部２Ａが形成されるリングロール２と、リングロール２の空間部２Ａに配置される内接ロール３とを備える２ロール内接式の圧搾装置１０を採用している。
　これにより、圧搾対象物Ｗ１の圧搾率が向上する。したがって、高い圧搾率を確保しつつ、圧搾対象物Ｗ１のほとんどをリングロール２の内周面２ａと内接ロール３の外周面３ａとの間に噛み込ませることができ、圧搾処理の効率が向上する。 Moreover, in this embodiment, as a squeezing device, the 2 roll inscribed type provided with the ring roll 2 in which the space part 2A is formed inside, and the inscribed roll 3 arrange | positioned in the space part 2A of the ring roll 2 is provided. The pressing device 10 is employed.
Thereby, the pressing rate of the pressing target object W1 improves. Therefore, most of the pressing object W1 can be bitten between the inner peripheral surface 2a of the ring roll 2 and the outer peripheral surface 3a of the inscribed roll 3 while ensuring a high pressing rate, and the efficiency of the pressing process is improved. improves.
　また、本実施形態においては、圧搾装置１０が、リングロール２の内周面２ａと内接ロール３の外周面３ａとの間に圧搾対象物Ｗ１を供給する供給部４８と、残渣Ｗ３の所望する含水率に応じて、供給部４８からの圧搾対象物Ｗ１の供給速度を調整する制御部４９と、を備える。
　これにより、残渣Ｗ３の含水率を、例えば残渣Ｗ３をそのまま燃料等として用いるのに適した値（例えば、３０～５０％）に調整することができ、残渣Ｗ３を使用するための処理が簡略になる。 In the present embodiment, the pressing device 10 supplies the pressing object W1 between the inner peripheral surface 2a of the ring roll 2 and the outer peripheral surface 3a of the inscribed roll 3, and the desired residue W3. The control part 49 which adjusts the supply speed | rate of the pressing target object W1 from the supply part 48 according to the moisture content to perform is provided.
As a result, the moisture content of the residue W3 can be adjusted to a value (for example, 30 to 50%) suitable for using the residue W3 as a fuel as it is, for example, and the processing for using the residue W3 is simplified. Become.
＜実施例＞
　本発明の圧搾装置１０による圧搾対象物Ｗ１の搾汁性能を調べるために、以下の実験１～３を行った。なお、以下の実験においては、圧搾対象物Ｗ１として、含水率が５５～７５％であるアブラヤシの樹幹を用いた。
　実施例１として、図１～４に示す構造を有し、初期状態でのリングロール２の中央部２ｃと内接ロール３の中央部３ｃとの間の隙間の大きさＭが０．４ｍｍである圧搾装置１０を作成した。実施例２として、図１～４に示す構造を有し、初期状態でのリングロール２の中央部２ｃと内接ロール３の中央部３ｃとの間の隙間の大きさＭが０．５ｍｍである圧搾装置１０を作成した。実施例３として、図１～４に示す構造を有し、初期状態でのリングロール２の中央部２ｃと内接ロール３の中央部３ｃとの間の隙間の大きさＭが０．６ｍｍである圧搾装置１０を作成した。実施例４として、図１～４に示す構造を有し、初期状態でのリングロール２の中央部２ｃと内接ロール３の中央部３ｃとの間の隙間の大きさＭが０．７ｍｍである圧搾装置１０を作成した。また、比較例として、図１、２、および４と同様の構造を有するが、リングロールおよび内接ロールに溝が形成されていない従来の圧搾装置を作成した。すなわち、比較例の圧搾装置においては、初期状態でのリングロールの中央部と内接ロールの中央部との間の隙間の大きさは０ｍｍとなる。 <Example>
In order to examine the squeezing performance of the squeezed object W1 by the squeezing device 10 of the present invention, the following experiments 1 to 3 were performed. In the following experiment, an oil palm trunk having a moisture content of 55 to 75% was used as the pressing object W1.
As Example 1, the structure shown in FIGS. 1 to 4 is used, and the size M of the gap between the center part 2c of the ring roll 2 and the center part 3c of the inscribed roll 3 in the initial state is 0.4 mm. A certain pressing device 10 was created. As Example 2, it has the structure shown in FIGS. 1 to 4, and the size M of the gap between the center part 2c of the ring roll 2 and the center part 3c of the inscribed roll 3 in the initial state is 0.5 mm. A certain pressing device 10 was created. As Example 3, it has the structure shown in FIGS. 1 to 4, and the size M of the gap between the center part 2c of the ring roll 2 and the center part 3c of the inscribed roll 3 in the initial state is 0.6 mm. A certain pressing device 10 was created. As Example 4, the structure shown in FIGS. 1 to 4 is used, and the size M of the gap between the center part 2c of the ring roll 2 and the center part 3c of the inscribed roll 3 in the initial state is 0.7 mm. A certain pressing device 10 was created. Further, as a comparative example, a conventional pressing device having the same structure as that shown in FIGS. 1, 2, and 4 but having no grooves formed on the ring roll and the inscribed roll was created. That is, in the expression device of the comparative example, the size of the gap between the center portion of the ring roll and the center portion of the inscribed roll in the initial state is 0 mm.
＜実験１＞
　実施例１～３の圧搾装置１０、および比較例の圧搾装置を用いて圧搾対象物Ｗ１の圧搾を行い、吸引部５５により吸引回収された残渣Ｗ３の固形回収率を計測した。下記表１に計測結果を示す。なお、表１の計測結果は、吸引部５５により吸引回収された残渣Ｗ３の含水率が３５～４０％であった場合のデータを集め、その平均とした。また、圧搾対象物Ｗ１の供給速度は、一時間当たりに供給される圧搾対象物Ｗ１の重量を示している。残渣Ｗ３の固形回収率は、圧搾前の圧搾対象物Ｗ１の固形分の重量に対する、吸引部５５により吸引回収された残渣Ｗ３の固形分の重量の比率を示している。残渣Ｗ３の生産速度は、一時間当たりに生産される残渣Ｗ３の重量を示している。 <Experiment 1>
The squeezed object W1 was squeezed using the squeezing device 10 of Examples 1 to 3 and the squeezing device of the comparative example, and the solid recovery rate of the residue W3 sucked and collected by the suction part 55 was measured. The measurement results are shown in Table 1 below. The measurement results in Table 1 were collected and averaged when the moisture content of the residue W3 sucked and collected by the suction unit 55 was 35 to 40%. Moreover, the supply speed | rate of the pressing target object W1 has shown the weight of the pressing target object W1 supplied per hour. The solid recovery rate of the residue W3 indicates the ratio of the weight of the solid content of the residue W3 sucked and collected by the suction unit 55 with respect to the weight of the solid content of the pressing object W1 before pressing. The production rate of the residue W3 indicates the weight of the residue W3 produced per hour.
Figure JPOXMLDOC01-appb-T000001
Figure JPOXMLDOC01-appb-T000001
　表１に示すように、実施例１～３の圧搾装置１０においては、残渣Ｗ３の固形回収率が８０％前後で安定した。したがって、本実施形態の圧搾装置１０によると、初期状態での中央部２ｃと中央部３ｃとの間の隙間の大きさＭによらず、残渣Ｗ３の固形回収率を高く保つことが可能であることが分かる。
　一方、比較例の圧搾装置においては、残渣Ｗ３の固形回収率が７０％程度に留まった。
　比較例の圧搾装置においては、圧搾対象物Ｗ１の全部をリングロールと内接ロールとの間に噛み込ませることができずに、圧搾対象物Ｗ１の一部がリングロールおよび内接ロールの側部を通って下方へ脱落してしまったため、残渣Ｗ３の固形回収率が低下したと考えられる。 As shown in Table 1, in the pressing devices 10 of Examples 1 to 3, the solid recovery rate of the residue W3 was stabilized at around 80%. Therefore, according to the squeezing device 10 of the present embodiment, the solid recovery rate of the residue W3 can be kept high regardless of the size M of the gap between the central portion 2c and the central portion 3c in the initial state. I understand that.
On the other hand, in the pressing device of the comparative example, the solid recovery rate of the residue W3 remained at about 70%.
In the squeezing device of the comparative example, the entire squeezed object W1 cannot be bitten between the ring roll and the inscribed roll, and a part of the squeezed object W1 is on the ring roll and the inscribed roll side. It is thought that the solid recovery rate of the residue W3 was lowered because it dropped out through the part.
　また、実施例１～３の圧搾装置１０においては、圧搾対象物Ｗ１の供給速度を増加させても、残渣Ｗ３の固形回収率が低下しなかった。
　一方、比較例の圧搾装置においては、圧搾対象物Ｗ１の供給速度を増加させると、残渣Ｗ３の固形回収率がさらに低下した。圧搾対象物Ｗ１の供給量が増加したことにより、リングロールおよび内接ロールの側部を通って下方へ脱落してしまう圧搾対象物Ｗ１の割合が増加したためと考えられる。 In the pressing devices 10 of Examples 1 to 3, the solid recovery rate of the residue W3 did not decrease even when the supply speed of the pressing object W1 was increased.
On the other hand, in the pressing device of the comparative example, when the supply speed of the pressing object W1 was increased, the solid recovery rate of the residue W3 further decreased. It is thought that the ratio of the pressing target object W1 that drops down through the side portions of the ring roll and the inscribed roll increases due to the increase in the supply amount of the pressing target object W1.
＜実験２＞
　圧搾対象物Ｗ１の供給速度をほぼ一定として、実施例１、２、４の圧搾装置１０、および比較例の圧搾装置を用いて圧搾対象物Ｗ１の圧搾を行い、吸引部５５により吸引回収された残渣Ｗ３の含水率を計測した。下記表２に計測結果を示す。 <Experiment 2>
The pressing object W1 was squeezed using the squeezing device 10 of Examples 1, 2, and 4 and the squeezing device of the comparative example, with the supply speed of the squeezing object W1 being substantially constant, and was sucked and collected by the suction unit 55. The water content of the residue W3 was measured. The measurement results are shown in Table 2 below.
Figure JPOXMLDOC01-appb-T000002
Figure JPOXMLDOC01-appb-T000002
　表２に示すように、実施例１、２、４の圧搾装置１０においては、圧搾対象物Ｗ１の供給速度がほぼ一定である場合、初期状態での中央部２ｃと中央部３ｃとの間の隙間の大きさＭが大きくなるにつれ、残渣Ｗ３の含水率が上昇した。比較例の隙間の大きさＭは０と考えることができるので、実施例および比較例の全体においても同様の傾向が確認された。 As shown in Table 2, in the squeezing devices 10 of Examples 1, 2, and 4, when the supply speed of the squeezed object W1 is substantially constant, between the central portion 2c and the central portion 3c in the initial state. As the gap size M increased, the moisture content of the residue W3 increased. Since the size M of the gap in the comparative example can be considered as 0, the same tendency was confirmed in the whole of the example and the comparative example.
＜実験３＞
　圧搾対象物Ｗ１の供給速度を変更して、実施例１の圧搾装置１０の圧搾装置を用いて圧搾対象物Ｗ１の圧搾を行い、吸引部５５により吸引回収された残渣Ｗ３の含水率を計測した。下記表３に計測結果を示す。 <Experiment 3>
The supply speed of the pressing object W1 was changed, the pressing object W1 was compressed using the pressing device of the pressing apparatus 10 of Example 1, and the moisture content of the residue W3 sucked and collected by the suction unit 55 was measured. . Table 3 below shows the measurement results.
Figure JPOXMLDOC01-appb-T000003
Figure JPOXMLDOC01-appb-T000003
　表３に示すように、実施例１の圧搾装置１０において、圧搾対象物Ｗ１の供給速度を下げるにつれ、残渣Ｗ３の含水率が上昇した。 As shown in Table 3, in the pressing device 10 of Example 1, the moisture content of the residue W3 increased as the supply speed of the pressing object W1 was decreased.
　表２および表３の計測結果から（実験２および実験３から）、本実施形態の圧搾装置１０によれば、初期状態での中央部２ｃと中央部３ｃとの間の隙間の大きさＭ、あるいは圧搾対象物Ｗ１の供給速度を変更することで、残渣Ｗ３の含水率を所望の値に調整することができることが分かる。 From the measurement results of Table 2 and Table 3 (from Experiment 2 and Experiment 3), according to the squeezing device 10 of the present embodiment, the size M of the gap between the central portion 2c and the central portion 3c in the initial state, Or it turns out that the moisture content of the residue W3 can be adjusted to a desired value by changing the supply speed | rate of the pressing target object W1.
　なお、本発明は、図面を参照して説明した上記実施形態に限定されるものではなく、その技術的範囲において様々な変形例が考えられる。また、溝の形状も、回転軸線方向に沿う断面視において、等脚台形状に限定されず、半割の楕円形状あるいは、円弧形状であってもよい。
　前記実施形態においては、溝２ｂ、３ｂは、周面２ａ、３ａの全周にわたって連続して形成されている。しかしながら、溝２ｂ、３ｂは、周面２ａ、３ａの全周にわたって形成されていればよく、断続的であってもよい。
　また、前記実施形態においては、リングロール２の内周面２ａに溝２ｂが形成され、内接ロール３の外周面３ａに溝３ｂが形成されている。しかしながら、リングロール２の内周面２ａおよび内接ロール３の外周面３ａのうちの少なくとも１つに溝が形成されていればよい。
　また、前記実施形態においては、リングロール２の内周面２ａおよび内接ロール３の外周面３ａのそれぞれに１つの溝２ｂ、３ｂが形成されている。しかしながら、リングロール２の内周面２ａおよび内接ロール３の外周面３ａのそれぞれに、複数の溝がロールの軸線方向に互いに離間して形成されてもよい。この場合、複数の溝のロールの軸線方向の幅の合計が、圧搾対象物Ｗ１の投入幅ｗの５０～１５０％となることが好ましい。 In addition, this invention is not limited to the said embodiment described with reference to drawings, In the technical scope, various modifications can be considered. Further, the shape of the groove is not limited to the isosceles trapezoidal shape in a cross-sectional view along the rotation axis direction, and may be a half-elliptical elliptical shape or an arc shape.
In the said embodiment, the groove | channels 2b and 3b are formed continuously over the perimeter of the surrounding surfaces 2a and 3a. However, the grooves 2b and 3b only need to be formed over the entire circumference of the peripheral surfaces 2a and 3a, and may be intermittent.
In the embodiment, the groove 2 b is formed on the inner peripheral surface 2 a of the ring roll 2, and the groove 3 b is formed on the outer peripheral surface 3 a of the inscribed roll 3. However, a groove may be formed in at least one of the inner peripheral surface 2a of the ring roll 2 and the outer peripheral surface 3a of the inscribed roll 3.
Moreover, in the said embodiment, the one groove | channel 2b, 3b is formed in each of the inner peripheral surface 2a of the ring roll 2, and the outer peripheral surface 3a of the inscribed roll 3. As shown in FIG. However, a plurality of grooves may be formed on the inner peripheral surface 2a of the ring roll 2 and the outer peripheral surface 3a of the inscribed roll 3 so as to be separated from each other in the axial direction of the roll. In this case, it is preferable that the total width in the axial direction of the plurality of groove rolls is 50 to 150% of the input width w of the pressing object W1.
　また、上記実施形態においては、圧搾装置として２ロール内接式の圧搾装置１０を例示している。しかしながら、本発明は、２ロール外接式の圧搾装置においても適用可能である。図６は本発明の一実施形態の変形例である、２ロール外接式の圧搾装置６０の斜視図である。図６に示すように、圧搾装置６０は、上ロール６１（第１の圧搾ロール）と、上ロール６１の下方に配置される下ロール６２（第２の圧搾ロール）とを備える。上ロール６１と下ロール６２とは、互いに平行に配置された回転軸線回りに、互いに逆方向に回転する。
　上ロール６１の外周面には、外周面の全周にわたって延びる溝６１ａが形成されている。下ロール６２の外周面には、外周面の全周にわたって延びる溝６２ａが形成されている。
　変形例の圧搾装置６０においても、溝６１ａ、６２ａにより、上ロール６１の外周面と下ロール６２の外周面との間の距離が、溝６１ａ、６２ａが形成される分だけ大きくなる。したがって、ロールの最接近点における上ロール６１の外周面と下ロール６２の外周面との間の隙間が大きくなる。この結果、圧搾対象物Ｗ１の供給速度を増加させた場合であっても、圧搾対象物Ｗ１のほとんどを上ロール６１の外周面と下ロール６２の外周面との間に噛み込ませて、ロールの最接近点を通過させることができる。したがって、残渣Ｗ３の固形回収率の低下を防ぎつつ、圧搾処理速度を向上させることができる。
　また、本発明は、３ロール外接式の圧搾装置においても適用可能である。 Moreover, in the said embodiment, the 2 roll inscribed type pressing apparatus 10 is illustrated as a pressing apparatus. However, the present invention can also be applied to a two-roll circumscribing press. FIG. 6 is a perspective view of a two-roll circumscribed squeezing device 60 that is a modification of the embodiment of the present invention. As shown in FIG. 6, the pressing device 60 includes an upper roll 61 (first pressing roll) and a lower roll 62 (second pressing roll) disposed below the upper roll 61. The upper roll 61 and the lower roll 62 rotate in directions opposite to each other around rotation axes arranged in parallel to each other.
On the outer peripheral surface of the upper roll 61, a groove 61a extending over the entire periphery of the outer peripheral surface is formed. On the outer peripheral surface of the lower roll 62, a groove 62a is formed extending over the entire outer peripheral surface.
Also in the squeezing device 60 of the modified example, the distance between the outer peripheral surface of the upper roll 61 and the outer peripheral surface of the lower roll 62 is increased by the grooves 61a and 62a, as much as the grooves 61a and 62a are formed. Therefore, the gap between the outer peripheral surface of the upper roll 61 and the outer peripheral surface of the lower roll 62 at the closest point of the roll is increased. As a result, even if the supply speed of the compressed object W1 is increased, most of the compressed object W1 is bitten between the outer peripheral surface of the upper roll 61 and the outer peripheral surface of the lower roll 62, and the roll Can be passed through the closest point. Therefore, the compression processing speed can be improved while preventing a decrease in the solid recovery rate of the residue W3.
The present invention can also be applied to a three-roll circumscribing press.
　その他、本発明の趣旨に逸脱しない範囲で、前記実施形態における構成要素を周知の構成要素に置き換えることは適宜可能であり、また、前記した変形例を適宜組み合わせてもよい。 In addition, it is possible to appropriately replace the constituent elements in the embodiment with well-known constituent elements without departing from the spirit of the present invention, and the above-described modified examples may be appropriately combined.
　本発明によれば、圧搾対象物の圧搾後の残渣の固形回収率の低下を防ぎつつ、圧搾処理速度を向上させることができる圧搾装置および圧搾方法を提供することができる。 According to the present invention, it is possible to provide a squeezing device and a squeezing method that can improve the squeezing speed while preventing a decrease in the solid recovery rate of the residue after squeezing the object to be squeezed.
　２…リングロール（第１の圧搾ロール）
　２ａ…内周面
　２ｂ…溝
　２ｃ…中央部
　３…内接ロール（第２の圧搾ロール）
　３ａ…外周面
　３ｂ…溝
　３ｃ…中央部
　４…押圧ロール
　１０、６０…圧搾装置
　４８…供給部
　６１…上ロール（第１の圧搾ロール）
　６１ａ…溝
　６２…下ロール（第２の圧搾ロール）
　６２ａ…溝 2 ... Ring roll (first pressing roll)
2a ... inner peripheral surface 2b ... groove 2c ... central part 3 ... inscribed roll (second pressing roll)
3a ... outer peripheral surface 3b ... groove 3c ... central part 4 ... pressing roll 10, 60 ... pressing device 48 ... supply part 61 ... upper roll (first pressing roll)
61a ... groove 62 ... lower roll (second pressing roll)
62a ... groove

Claims (7)

  1. 　回転可能に配置された第１および第２の圧搾ロールと、前記第１および第２の圧搾ロールの周面間に圧搾対象物を供給する供給部と、を備え、前記第１および第２の圧搾ロールの周面間において圧搾対象物を圧搾する圧搾装置であって、
    　前記第１および第２の圧搾ロールのうちの少なくとも１つの周面に、前記周面の全周にわたって延び、前記圧搾対象物が進入する１以上の溝が形成されており、
    　前記１以上の溝の前記第１または第２の圧搾ロールの軸線方向における幅の合計が、前記供給部から前記周面間に前記圧搾対象物を投入する投入幅の１５０％以下となっている圧搾装置。     1st and 2nd pressing roll arrange | positioned rotatably, and the supply part which supplies a pressing target object between the surrounding surfaces of the said 1st and 2nd pressing roll, The said 1st and 2nd A squeezing device that squeezes an object to be squeezed between peripheral surfaces of a squeeze roll,
    At least one circumferential surface of the first and second pressing rolls extends over the entire circumference of the peripheral surface, and one or more grooves into which the compressed object enters are formed,
    The total width of the one or more grooves in the axial direction of the first or second squeezing roll is 150% or less of the input width for introducing the squeezed object from the supply section to the peripheral surface. Squeezing device.
  2. 　前記溝は、前記第１あるいは第２の圧搾ロールの回転軸線方向における中央部に形成されている請求項１に記載の圧搾装置。 The squeezing device according to claim 1, wherein the groove is formed at a central portion in the rotation axis direction of the first or second squeezing roll.
  3. 　前記溝は、前記周面の全周にわたって連続して形成されている請求項１または２に記載の圧搾装置。 The pressing device according to claim 1 or 2, wherein the groove is formed continuously over the entire circumference of the peripheral surface.
  4. 　前記第１の圧搾ロールは内側に空間部が形成されるリングロールであり、
    　前記第２の圧搾ロールは前記リングロールの前記空間部に配置される内接ロールであり、
    　前記内接ロールの外周面および前記リングロールの内周面のうちの少なくとも１つの周面に、前記溝が形成されている請求項１～３のいずれか一項に記載の圧搾装置。     The first squeeze roll is a ring roll in which a space is formed on the inside,
    The second squeezing roll is an inscribed roll arranged in the space of the ring roll,
    The pressing device according to any one of claims 1 to 3, wherein the groove is formed on at least one peripheral surface of the outer peripheral surface of the inscribed roll and the inner peripheral surface of the ring roll.
  5. 　前記圧搾対象物の圧搾後の残渣の所望する含水率に応じて、前記供給部からの前記圧搾対象物の単位時間当たりに供給する質量を調整する制御部をさらに備える請求項１～４のいずれか一項に記載の圧搾装置。 The control unit according to any one of claims 1 to 4, further comprising a control unit that adjusts a mass supplied per unit time of the compressed object from the supply unit according to a desired moisture content of the residue after the compressed object is compressed. The pressing device according to claim 1.
  6. 　請求項１～５のいずれか一項に記載の圧搾装置により前記圧搾対象物を圧搾する圧搾方法であって、
    　前記圧搾対象物を前記第１および第２の圧搾ロールの前記周面間に供給する供給工程と、
    　前記圧搾対象物を前記周面間で圧搾する圧搾工程と、
    　前記圧搾工程後に、前記第１および第２の圧搾ロールが最も近接する位置を通過した前記圧搾対象物の圧搾後の残渣を回収する回収工程と、を備え、
    　前記圧搾工程の際、前記圧搾対象物を前記溝に進入させる圧搾方法。     A squeezing method for squeezing the object to be squeezed by the squeezing device according to any one of claims 1 to 5,
    A supplying step of supplying the object to be compressed between the peripheral surfaces of the first and second pressing rolls;
    A squeezing step of squeezing the squeezed object between the peripheral surfaces;
    A recovery step of recovering a residue after pressing the compressed object that has passed through a position where the first and second pressing rolls are closest to each other after the pressing step;
    The squeezing method for causing the squeezed object to enter the groove during the squeezing step.
  7. 　前記供給工程では、前記残渣の所望する含水率に応じて、前記圧搾対象物の単位時間当たりに供給する質量を調整する請求項６に記載の圧搾方法。 The squeezing method according to claim 6, wherein in the supplying step, the mass supplied per unit time of the squeezed object is adjusted according to a desired moisture content of the residue.
PCT/JP2018/013132 2017-05-29 2018-03-29 Squeezing device and squeezing method WO2018220977A1 (en)

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US3124837A (en) * 1964-03-17 Ring-roller pressure molding of metal powders and the like
GB2022124A (en) * 1978-04-06 1979-12-12 Icic Spa Rotary pressing cage
JP2014205179A (en) * 2013-04-15 2014-10-30 株式会社 ユイ工業 Roller type dewatering device
JP5799189B2 (en) * 2013-06-28 2015-10-21 新日鉄住金エンジニアリング株式会社 Squeezing device, fuel pellet manufacturing equipment and squeezing method

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US3592129A (en) * 1968-04-22 1971-07-13 Heinz List Machine for processing powder or pastelike materials into a granulate or the like
JPS5610476Y2 (en) * 1978-04-07 1981-03-09
JP3485138B2 (en) * 1996-02-08 2004-01-13 勇 星谷 Sludge dewatering method and sludge dewatering equipment used for it

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3124837A (en) * 1964-03-17 Ring-roller pressure molding of metal powders and the like
GB2022124A (en) * 1978-04-06 1979-12-12 Icic Spa Rotary pressing cage
JP2014205179A (en) * 2013-04-15 2014-10-30 株式会社 ユイ工業 Roller type dewatering device
JP5799189B2 (en) * 2013-06-28 2015-10-21 新日鉄住金エンジニアリング株式会社 Squeezing device, fuel pellet manufacturing equipment and squeezing method

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