WO2024122632A1 - 遠心分離装置および分離板 - Google Patents

遠心分離装置および分離板 Download PDF

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Publication number
WO2024122632A1
WO2024122632A1 PCT/JP2023/043999 JP2023043999W WO2024122632A1 WO 2024122632 A1 WO2024122632 A1 WO 2024122632A1 JP 2023043999 W JP2023043999 W JP 2023043999W WO 2024122632 A1 WO2024122632 A1 WO 2024122632A1
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WO
WIPO (PCT)
Prior art keywords
conical surface
separation plate
separation
concave
stacked
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/JP2023/043999
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English (en)
French (fr)
Japanese (ja)
Inventor
光治 永根
圭介 加治
彩花 羽住
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mitsubishi Kakoki Kaisha Ltd
Original Assignee
Mitsubishi Kakoki Kaisha Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Mitsubishi Kakoki Kaisha Ltd filed Critical Mitsubishi Kakoki Kaisha Ltd
Priority to KR1020257022672A priority Critical patent/KR20250119628A/ko
Priority to JP2024563004A priority patent/JP7719583B2/ja
Priority to CN202380093136.9A priority patent/CN120641222A/zh
Publication of WO2024122632A1 publication Critical patent/WO2024122632A1/ja
Anticipated expiration legal-status Critical
Priority to JP2025123094A priority patent/JP2025148588A/ja
Ceased legal-status Critical Current

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
    • B04B—CENTRIFUGES
    • B04B7/00—Elements of centrifuges
    • B04B7/08—Rotary bowls
    • B04B7/12—Inserts, e.g. armouring plates
    • B04B7/14—Inserts, e.g. armouring plates for separating walls of conical shape
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
    • B04B—CENTRIFUGES
    • B04B1/00—Centrifuges with rotary bowls provided with solid jackets for separating predominantly liquid mixtures with or without solid particles
    • B04B1/04—Centrifuges with rotary bowls provided with solid jackets for separating predominantly liquid mixtures with or without solid particles with inserted separating walls
    • B04B1/08—Centrifuges with rotary bowls provided with solid jackets for separating predominantly liquid mixtures with or without solid particles with inserted separating walls of conical shape
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
    • B04B—CENTRIFUGES
    • B04B1/00—Centrifuges with rotary bowls provided with solid jackets for separating predominantly liquid mixtures with or without solid particles
    • B04B1/10—Centrifuges with rotary bowls provided with solid jackets for separating predominantly liquid mixtures with or without solid particles with discharging outlets in the plane of the maximum diameter of the bowl
    • B04B1/14—Centrifuges with rotary bowls provided with solid jackets for separating predominantly liquid mixtures with or without solid particles with discharging outlets in the plane of the maximum diameter of the bowl with periodical discharge

Definitions

  • the present invention relates to a separation plate type centrifuge device that separates components with different specific gravities in a fluid to be treated, and a separation plate used in such a centrifuge device.
  • the centrifugal separator is provided with a number of stacked hollow truncated cone-shaped separation plates arranged in the direction of the rotation axis with separation gaps at specified intervals provided by rectangular gap pieces, and when the treated fluid flows into the separation gaps toward the center of the separation plate, components with different specific gravities move toward the outer periphery of the separation plate by centrifugal sedimentation, thereby being separated (see, for example, Patent Document 1).
  • the present invention aims to provide a centrifuge and a separation plate that can improve separation capacity without increasing the size of the centrifuge.
  • the first centrifugal separator of the present invention comprises: A centrifugal separator having a rotating vessel and a plurality of separation plates formed in a hollow cylindrical truncated cone shape and stacked at predetermined intervals in a stacking direction inside the rotating vessel, the centrifugal separator separating components having different specific gravities contained in a fluid to be treated by centrifugal force,
  • the separation plate is provided on the surface side of the conical surface, and is provided along the generatrix of the conical surface.
  • the separation plate has a rectangular spacer for maintaining the predetermined space between the separation plate and other stacked separation plates.
  • the uneven pattern is characterized in that adjacent convex portions are formed so that the angle between each convex portion is 10 degrees or less.
  • the second separation plate of the present invention is a hollow cylindrical truncated cone-shaped separation plate that is stacked in a plurality of sheets at predetermined intervals in the stacking direction inside a rotary vessel and separates components having different specific gravities contained in a fluid to be treated introduced into the rotary vessel by centrifugal force, a rectangular spacer provided on the surface side of the conical surface so as to protrude along the generatrix of the conical surface and to maintain the predetermined distance between the stacked separation plates; a convexo-concave pattern formed between adjacent gap pieces in the circumferential direction of the conical surface, the convexo-concave pattern being formed along the generatrix of the conical surface of the separation plate and in the shape of a line segment between a lower edge and an upper edge of the conical surface; Including, The uneven pattern is characterized in that adjacent convex portions are formed so as to form an angle of 10 degrees or less.
  • the introduced raw liquid is rectified, and the separation ability of the raw liquid is improved as it flows upward through the gaps between multiple stacked separation plates.
  • FIG. 2 is a front cross-sectional view of a main part of the centrifugal separator according to the embodiment of the present invention.
  • FIG. 2 is a schematic perspective view of a separation plate according to the first embodiment.
  • 3 is a cross-sectional view taken along line III-III of FIG. 2 , showing an example of lamination of separation plates according to the first embodiment, and further showing the state of lamination of separation plates in a cross-sectional state.
  • FIG. FIG. 2 is a plan view of a separation plate according to the first embodiment.
  • FIG. 2 is a cross-sectional view of a separation plate according to the first embodiment.
  • FIG. 11 is a schematic perspective view of a separation plate according to a second embodiment.
  • FIG. 11 is a schematic perspective view of a separation plate according to a third embodiment.
  • FIG. 11 is a plan view of a separation plate according to a third embodiment.
  • FIG. 4 is a schematic perspective view showing a flow state of a separation plate.
  • 10 is a flow diagram of flow lines between the separation plates indicated by Xa and Xb in FIG. 9 .
  • FIG. 13 is a partially enlarged plan view showing a separation plate of a fourth embodiment.
  • 12 is an enlarged cross-sectional view taken along line XII-XII in FIG. 11, further illustrating the stacking state of separation plates in the cross-sectional state.
  • FIG. 13 is a partially enlarged plan view showing a separation plate of a fifth embodiment.
  • FIG. 13A is an enlarged cross-sectional view taken along line XIVa-XIVa in FIG. 13, further showing the stacked state of the separation plates in a cross-sectional state
  • FIG. 13B is an enlarged cross-sectional view taken along line XIVb-XIVb in FIG. 13, further showing the stacked state of the separation plates in a cross-sectional state
  • FIG. 13C is an enlarged cross-sectional view taken along line XIVc-XIVc in FIG. 13, further showing the stacked state of the separation plates in a cross-sectional state.
  • FIG. 13 is a plan view of a separation plate according to a sixth embodiment.
  • FIG. 16 is an enlarged plan view of a rectangular area surrounded by a dashed line in FIG. 15 .
  • FIG. 16 is an enlarged plan view of a rectangular area surrounded by a dashed line in FIG. 15 .
  • FIG. 13 is a plan view of a separation plate according to the seventh embodiment.
  • FIG. 18 is an enlarged plan view of a rectangular area surrounded by a dashed line in FIG. 17 .
  • 10A to 10C show embodiments of a concave-convex pattern consisting of convex portions and concave portions in the separation plates of the first to seventh embodiments.
  • FIG. 1 is a front cross-sectional view of the main parts of the centrifugal separator of the present invention.
  • FIG. 2 is a perspective schematic view of a separation plate of this embodiment.
  • FIG. 3 is a cross-sectional view taken along the line III-III in FIG. 2, showing an example of a stack of the separation plates.
  • FIG. 4 is a plan view of the separation plate of this embodiment.
  • FIG. 5 is a cross-sectional view of FIG. 4.
  • a separation plate type centrifuge which is used for purification of raw liquids, which are fluids to be treated, such as fuel oil and lubricating oil for marine diesel engines, and for classification and separation operations in various industrial fields.
  • This separation plate type centrifuge is a vertical centrifuge in which a large number of separation plates made of thin truncated cone-shaped plates are stacked with small gaps along the axial direction of a guide tube inside a rotor, and components with different specific gravities are separated inside the rotor by centrifugal force.
  • the above-mentioned components with different specific gravities are impurities with different specific gravities contained in the fluid to be treated, and more specifically, they are solids and moisture that are separated and deposited inside the rotor by centrifugal force.
  • the separation plate type centrifugal separator 100 has a guide tube 101 that guides the raw liquid 13, which is the fluid to be treated and is supplied from above into a rotating vessel 11 that is attached to a rotating shaft (not shown) and rotates at high speed, in a diverging manner toward the bottom of the rotating vessel, and a number of separation plates 12 that are mounted in a stack with small gaps in the axial direction of the guide tube 101 in order to separate each component in the raw liquid 13, such as component 13B having a different specific gravity, from a separated liquid 13A based on the difference in specific gravity.
  • the components with a high specific gravity solids, water, etc.
  • the components with a low specific gravity are separated into the center side of the rotating vessel 11, and the separated liquid 13A is discharged from the top of the rotating vessel.
  • the separation plate 12 (disk) is made of, for example, stainless steel or carbon steel and has a thickness of, for example, 0.3 mm to 1.0 mm, preferably 0.3 to 0.6 mm, and has a cap-like shape, i.e., a hollow cylindrical truncated cone shape with a conical surface 14 having an upper end cut off along a plane parallel to the open bottom surface and a ring-shaped portion 14A in the same plane provided on the inner peripheral side.
  • a cap-like shape i.e., a hollow cylindrical truncated cone shape with a conical surface 14 having an upper end cut off along a plane parallel to the open bottom surface and a ring-shaped portion 14A in the same plane provided on the inner peripheral side.
  • a rectangular gap piece (hereinafter also referred to as a "gap piece") 16 is provided in the direction along the conical generatrix of the separation plate 12, which constitutes a gap portion for maintaining the interval D between the stacked separation plates 12 at, for example, 0.3 mm to 1.0 mm, preferably 0.3 to 0.6 mm when assembled into a separation plate type centrifuge device.
  • a notch 14B is formed on part of the inner circumference of the ring-shaped portion 14A, and a key is inserted between the notch 14B and the key groove 101a formed in the guide tube 101 shown in Figure 1, allowing the separation plate 12 to be positioned in the rotational direction (synchronized and prevented from rotating).
  • the separation capacity (throughput) when the fluid to be treated is treated between the separation plates 12 by centrifugation is generally proportional to the settling area, i.e., the surface area of the separation plates 12. Therefore, in order to increase the separation capacity, the number of separation plates 12 or the outer diameter is usually increased. In contrast, in the separation plate 12 of this embodiment, the separation capacity is increased by adopting an uneven pattern 15 consisting of uneven portions on the front and back surfaces of the separation plate 12 in the area between adjacent gap pieces 16, 16 in the circumferential direction of the conical surface 14.
  • the separation plates 12 of this embodiment are stacked inside the rotating vessel 11 at a predetermined interval in the stacking direction, and have a truncated cone shape that separates components with different specific gravities contained in the raw liquid 13, which is the fluid to be treated that is introduced into the rotating vessel 11, by centrifugal force.
  • the first separation plate 12-1 has eight rectangular gap pieces 16 (16a to 16h) that are provided on the surface side of the conical surface 14, run along the generatrix of the conical surface 14, and maintain a predetermined distance D between them and the other second separation plates 12-2 that are stacked in sequence.
  • the gap pieces 16 are attached by welding.
  • the gap piece 16 has a long, thin plate shape (strip shape) with a predetermined thickness and a predetermined width, and both end portions 20, 21 in the generatrix direction of the separation plate 12 are formed into an arc shape.
  • a plurality of the gap pieces 16 are provided at predetermined intervals in the circumferential direction of the conical surface 14.
  • the number of the gap pieces 16 is preferably 6 to 12, and more preferably 6 to 10.
  • the angle ⁇ between adjacent gap pieces 16, 16 in the circumferential direction is 45 degrees. This angle can be changed according to the specifications.
  • eight protruding members 16a to 16h are provided at equal intervals in the circumferential direction.
  • the gap piece 16 of this embodiment is long enough to leave a space 14e between the lower edge 14C and the end 20 of the conical surface 14, and between the upper edge 14D and the end 21 thereof.
  • the gap piece 16 is formed separately and then fixed to the conical surface 14 of the separation plate 12 by welding to form an integrated structure.
  • the gap piece 16 it is also possible for the gap piece 16 to be formed integrally with the separation plate 12 at the time of its formation, which is an optional structure.
  • the gap piece 16 is not limited to the illustrated form and can be modified in design within the scope of the present invention as long as it has a form that can form a predetermined gap in the stacking direction between the separation plates 16, 16 when the separation plates 16 are stacked.
  • uneven patterns 15 are formed between the first gap piece 16a and the second gap piece 16b, between the second gap piece 16b and the third gap piece 16c, between the third gap piece 16c and the fourth gap piece 16d, between the fourth gap piece 16d and the fifth gap piece 16e, between the fifth gap piece 16e and the sixth gap piece 16f, between the sixth gap piece 16f and the seventh gap piece 16g, and between the seventh gap piece 16g and the eighth gap piece 16h, which are adjacent to each other in the circumferential direction of the separation plate 12.
  • the uneven pattern 15 is composed of multiple convex portions 12A and concave portions 12B formed in a linear shape along the generating line of the conical surface 14, alternately arranged in a circumferential direction from the lower edge portion 14C of the conical surface 14 to the upper edge portion 14D of the conical surface 14. Moreover, the height of the protruding portions 12A constituting the uneven pattern 15 in the protruding direction is formed to be lower than the height of the spacer pieces 16 in the protruding direction.
  • the uneven pattern 15 is made up of eight patterns (the first pattern to the eighth pattern) as shown in FIG. 4, and is formed of a plurality of protrusions 12A and a plurality of recesses 12B.
  • the angle ⁇ 1 between each of the convex portions 12A adjacent to each other in the circumferential direction is formed to be 10 degrees or less, more preferably 8 degrees or less. This is because, if the angle exceeds 10 degrees, the straightening effect is not fully exerted in the straightening region 17 formed by the distance D between the separation plates 12 formed during stacking as described below.
  • the angle ⁇ 1 between adjacent convex portions 12A may be the same angle or different angles between all convex portions.
  • an uneven pattern 15 consisting of six convex portions 12A (first convex portions 12A-1 to 12A-6) and five concave portions 12B is formed.
  • the angle ⁇ 1 between adjacent convex portions 12A and each convex portion 12A is 5 degrees.
  • the angle ⁇ 2 between the first gap piece 16a and the first convex portion 12A-1 adjacent thereto in the circumferential direction is 10 degrees, and the surface between the first gap piece 16a and the first convex portion 12A-1 is a flat surface 14E.
  • both side areas of the first gap piece 16a are flat surfaces 14E, ensuring that the uneven pattern 15 is formed with a predetermined spacing when the separation plate 12 is molded, for example.
  • the angle will change depending on the number of gap pieces 16 installed, but for example, if there are eight gap pieces 16, ⁇ is 45 degrees, in which case ⁇ 1 can be set to approximately 3 to 8 degrees. In this case, if ⁇ 1 is 3 degrees, ⁇ 2 should preferably be 15 degrees, and if ⁇ 1 is 8 degrees, approximately 3 degrees.
  • the stacked area between the gap piece 16-1 at the bottom of the stack and the gap piece 16-2 at the top of the stack forms a straightening area 17 between the front surface of the separation plate 12-1 at the bottom of the stack in the stacked area and the back surface of the other separation plate 12-2 at the top of the stack (see Figure 3).
  • the rectifying region 17 due to the formation of the rectifying region 17, the introduced raw liquid 13 is rectified to form a laminar flow, which rises and flows through the gap D between the multiple stacked separation plates.
  • the components with a high specific gravity (i.e., solids and moisture) 13B that have settled on the back surface of the upper separation plate 12-2 of the stack are not stirred up by the turbulent flow, and as a result, the components with a high specific gravity are separated toward the outer diameter part of the rotor, while the separated liquid 13 is separated toward the center of the rotating vessel 11, improving the separation ability.
  • a high specific gravity i.e., solids and moisture
  • laminar flow is a flow in one direction as shown in the flow diagram in the area of uneven pattern 15A (where the angle ⁇ 1 between first convex portion 12A-1 and second convex portion 12A-2 adjacent to first convex portion 12A-1 in the circumferential direction is 10 degrees or less) that has six convex portions on the conical surface 14 of the separation plate, as shown in the schematic image diagram of Figure 9.
  • the flow diagram in the area of uneven pattern 15B where ⁇ 1 exceeds 10 degrees, the flow is not laminar but turbulent, with the flow lines intersecting, and the two flows are different.
  • FIGS. 10(a) and 10(b) schematic flow diagrams of flow lines in partial cross sections of the separation plate shown at Xa and Xb in FIG. 9 are shown in FIGS. 10(a) and 10(b).
  • the flow velocity F1 near the wall of the separator plate is smaller than the flow velocity F11 on the wall side of the turbulent flow shown in the image of flow lines in Fig. 10(b).
  • components with different specific gravities (solids, water, etc.) in the introduced stock solution 13 tend to move toward the outer diameter side.
  • the separation plate 12 rotates at high speed counterclockwise during centrifugation, causing the separated liquid to slide on the separation plate 12 in the direction of the delayed rotation, and not receiving sufficient centrifugal force, resulting in reduced separation efficiency.
  • the surface area of the conical surface 14 is larger, so it is easy to increase the processing capacity. Therefore, it is easy to obtain high processing capacity, for example, when the particle size is very small.
  • the gap pieces 16 are arranged in the form of flat plates in the generatrix direction with a specified interval between them, so even when multiple plates are stacked, the separation plates on the stacked side are prevented from shifting from each other due to compression or centrifugal force, eliminating factors such as deformation of the separation plates and mechanical vibration.
  • the concentrate is introduced more reliably into the gaps than if it were not formed from the lower edge 14C, and laminar flow can be formed immediately.
  • the circumferential region is provided with a discharge mechanism that discharges components with different specific gravities separated by centrifugal force to the outside.
  • This mechanism is a self-discharge mechanism that discharges components with different specific gravities (solids, moisture, etc.) that have accumulated instantaneously while maintaining the rotation of the separation plate 12 of the centrifuge device.
  • the valve cylinder 111 which moves up and down moves to the upper side and the outer circumferential upper edge 111a is pressed against the seal portion 112 to close the intermittent discharge port 113 and deposit components with different specific gravities (solids, etc.). Then, when the amount of deposits in the rotating vessel 11 reaches a predetermined amount based on, for example, the amount of the raw liquid 13 being processed and the content of the components with different specific gravities, the valve cylinder 111 is moved downward to cause the liquid to be discharged from the intermittent discharge port 113 in one go.
  • FIG. 6 is a schematic perspective view of a separation plate according to the second embodiment.
  • the separation plate of this embodiment has a plurality of notched liquid passage holes 19 formed in the lower edge portion 14 ⁇ /b>C of the conical surface 14 .
  • the stock solution 13 can be reliably distributed and supplied to each separation plate when a plurality of plates are stacked.
  • FIG. 7 and 8 are schematic perspective and plan views of a separation plate according to a third embodiment.
  • the separation plate of this embodiment forms a circumferentially continuous band-shaped flat surface region 14a (a region in which the uneven pattern 15 is not formed) between the upper edge portion 14D of the conical surface 14 and the upper end region 15a of the uneven pattern 15.
  • a band-like flat surface region 14a (a region where the concave-convex pattern 15 is not formed) is formed continuously in the circumferential direction between the upper edge portion 14D of the conical surface 14 and the upper end region 15a of the concave-convex pattern 15. The cross-sectional area becomes smaller toward the upper end.
  • 11 and 12 are schematic diagrams showing the fourth embodiment.
  • this embodiment an example of another embodiment of the concave-convex pattern 15 arranged between adjacent spacer pieces 16 in the circumferential direction of the conical surface 14 is shown.
  • the separation plate 12 of this embodiment forms a circumferentially continuous band-shaped flat surface region 14a (a region in which the uneven pattern 15 is not formed) between the upper edge portion 14D of the conical surface 14 and the upper end region 15a of the uneven pattern 15.
  • this embodiment has a characteristic configuration in the uneven pattern 15, and the other configurations and effects are the same as those of the first to third embodiments, and the uneven pattern 15 of this embodiment can be adopted in those embodiments as appropriate.
  • the present embodiment employs a convex-concave pattern 15 formed between the gap pieces 16 in a continuous sequence of convex portion 12A (12A-1), concave portion 12B, convex portion 12A (12A-2), flat surface 12C, convex portion 12A (12A-5), concave portion 12B, and convex portion 12A (12A-6).
  • the flat end surface 12c is disposed between the convex portion 12A-2 and the convex portion 12A-5.
  • the uneven pattern 15 of this embodiment is not limited to the illustrated form, and is within the scope of the present invention as long as it has a flat surface 12C and at least convex portions 12A and concave portions 12B arranged on the left and right sides of the flat surface 12C in the circumferential direction.
  • a pattern is illustrated in which a flat surface 12C is arranged between convex portion 12A (12A-2) and convex portion 12A (12A-5), but a pattern in which a flat surface 12C is arranged between concave portions 12B and 12B may also be used.
  • FIG. 13 and 14 are schematic diagrams showing the fifth embodiment.
  • an example of another embodiment of the concave-convex pattern 15 arranged between adjacent spacer pieces 16 in the circumferential direction of the conical surface 14 is shown.
  • the concave-convex pattern 15 of this embodiment is characterized in that concave flow paths 20 are formed by cutting out the convex portions 12A to a predetermined depth at predetermined intervals in the generatrix direction of the convex portions 12A.
  • the separation plate 12 of this embodiment like the separation plate 12 of the third embodiment, forms a circumferentially continuous band-shaped flat surface region 14a (a region in which the uneven pattern 15 is not formed) between the upper edge portion 14D of the conical surface 14 and the upper end region 15a of the uneven pattern 15.
  • this embodiment has a characteristic configuration in the uneven pattern 15, and the other configurations and effects are the same as those of the first to fourth embodiments, and the uneven pattern 15 of this embodiment can be adopted in those embodiments as appropriate.
  • the concave flow paths 20 are cut out to a constant depth at constant intervals in the generatrix direction of the protrusion 12A.
  • the depth and the length in the generatrix direction of the concave flow passage 20 are not particularly limited to this embodiment, and may be modified in design within the scope of the present invention.
  • the concave flow paths 20 may be cut out in the same shape or in different shapes.
  • the convex portions 12A-1 to 12A-6 may have different shapes, and the number of cutouts in each convex portion 12A may be different.
  • the convex portions 12A may be cut out at an angle (diagonal) to the generating line of the convex portion 12A.
  • the presence of the notches allows the flow to move from areas with a fast flow rate to areas with a slow flow rate, making the overall flow rate more uniform. As a result, the flow rate is more uniform, improving the straightening effect.
  • FIGS. 15 and 16 are schematic diagrams showing the sixth embodiment.
  • an example of another embodiment of the concave-convex pattern 15 arranged between adjacent spacer pieces 16 in the circumferential direction of the conical surface 14 is shown.
  • the separation plate 12 of this embodiment like the separation plate 12 of the third embodiment, forms a circumferentially continuous band-shaped flat surface region 14a (a region in which the uneven pattern 15 is not formed) between the upper edge portion 14D of the conical surface 14 and the upper end region 15a of the uneven pattern 15.
  • this embodiment has a characteristic configuration in the uneven pattern 15, and the other configurations and effects are the same as those of the first to fifth embodiments, and the uneven pattern 15 of this embodiment can be adopted in those embodiments as appropriate.
  • the uneven pattern 15 of this embodiment is an example of an implementation using a cylindrical guide tube 30 having four protruding ribs 32 spaced at regular intervals around the circumference of the tube, and each separation plate 12 is key-connected via the ribs 32.
  • the convex portion 12A is composed of a first convex portion 18a extending in the generatrix direction from the lower edge portion 14C side toward the upper edge portion 14A side, and a second convex portion 18b continuing from the first convex portion 18a and extending at an angle ⁇ 3 toward the upper edge portion 14A so as to avoid the rib 32.
  • the rib 32 is avoided by configuring the rib 32 not in a straight line extending in the generatrix direction, but by forming the rib 32 at an angle ⁇ 3 midway, i.e., from the second convex portion 18b toward the upper edge portion 14A.
  • the angle ⁇ 3 of the second convex portion 18b is assumed to be, for example, 15 degrees or less in this embodiment.
  • the angle ⁇ 3 of the second convex portion 18b is assumed to be, for example, 10 degrees, and is preferably set to 15 degrees or less.
  • the angle ⁇ 3 of the second convex portion 18b is preferably set to 15 degrees or less, so that the imaginary straight line VL1 of the second convex portion 18b extending toward the upper edge portion 14A, as shown in Figure 16, is configured not to contact (not to intersect) with the generating line BL1 (shown by a virtual line) of the adjacent convex portion 12A on the separation plate 12.
  • the angle of 15 degrees or less is also an angle that can ensure dischargeability, because a larger angle reduces dischargeability.
  • the angle is set to 15 degrees or less.
  • the angle is such that dischargeability can be ensured by avoiding the ribs 32. This is because if the angle is greater than 15 degrees, dischargeability becomes poor.
  • this configuration the separated liquid flows smoothly without disturbing the flow. Furthermore, this configuration prevents the separated liquid from stagnating, which improves both separation and discharge.
  • all of the convex portions 12A are configured to consist of the first convex portion 18a and the second convex portion 18b, but it is also within the scope of the present invention to adopt the configuration of the convex portions 12A of this embodiment (a configuration including the first convex portion 18a and the second convex portion 18b) only for the convex portions 12A (12A-1, 12A-6) in the vicinity of the rib 32 of the guide tube 30, and to configure the other convex portions 12A (12A-2 to 12A-5) as convex portions 12A configured linearly in the generatrix direction.
  • the configuration shown in the fourth embodiment i.e., the configuration in which a flat surface 12C is provided between the concave and convex portions
  • the configuration shown in the fifth embodiment i.e., the configuration in which a notch 20 is provided in the convex portion 12A
  • the guide tube 30 is not limited to the illustrated form, but may be modified to a known form as appropriate according to the specifications.
  • the number of protruding ribs 32 is not limited to the present invention. Seventh Embodiment
  • FIG. 17 and 18 are schematic diagrams showing the seventh embodiment.
  • an example of another embodiment of the concave-convex pattern 15 arranged between adjacent spacer pieces 16 in the circumferential direction of the conical surface 14 is shown.
  • the separation plate 12 of this embodiment like the separation plate 12 of the third embodiment, forms a circumferentially continuous band-shaped flat surface region 14a (a region in which the uneven pattern 15 is not formed) between the upper edge portion 14D of the conical surface 14 and the upper end region 15a of the uneven pattern 15.
  • this embodiment has a characteristic configuration in the uneven pattern 15, and the other configurations and effects are the same as those of the first to sixth embodiments, and the uneven pattern 15 of this embodiment can be adopted in those embodiments as appropriate.
  • the uneven pattern 15 is composed of only the convex portion 12A (12A-4 to 12A-6) that overlaps the liquid passage hole 19, a second convex portion 18b that extends linearly in the generatrix direction from the upper edge 14A side toward the lower edge 14C side, and a first convex portion 18a that continues from the second convex portion 18b and reaches the liquid passage hole 19 at a certain angle toward the liquid passage hole 19.
  • the angle ⁇ 4 of the first convex portion 18a is assumed to be, for example, 5 degrees, and is preferably set to 10 degrees or less.
  • the reason why the angle ⁇ 4 of the first convex portion 18a is preferably set to 10 degrees or less is to configure the first convex portion 18a so that the imaginary straight line VL1 of the first convex portion 18a extending toward the lower end edge 14C does not contact (does not intersect) with the generating line (shown by an imaginary line) BL1 of the adjacent convex portion 12A on the separation plate 12 as shown in FIG.
  • the angle ⁇ 4 of the first convex portion 18a is assumed to be, for example, 5 degrees, and is preferably set to 10 degrees or less.
  • the reason why the angle ⁇ 4 of the first convex portion 18a is preferably set to 10 degrees or less is to configure the first convex portion 18a so that the imaginary straight line VL1 of the first convex portion 18a extending toward the upper edge 14A does not contact (does not intersect) with the generating line (shown by an imaginary line) BL1 of the adjacent convex portion 12A on the separation plate 12 as shown in FIG.
  • the angle of 10 degrees or less is also an angle at which dischargeability can be ensured, because if the angle is greater than 10 degrees, dischargeability becomes poor.
  • the configuration shown in the fourth embodiment that is, the configuration in which the flat surface 12C is disposed between the concave and convex portions
  • the design shown in the fifth embodiment that is, the configuration in which the notch portion 20 is provided in the convex portion 12A
  • the design can be changed as desired.
  • the configuration shown in the sixth embodiment that is, the convex portions 12A (all or any of 12A-1 to 12A-3) other than the convex portions 12A (12A-4 to 12A-6) specific to this embodiment, can be configured with a first convex portion 18a extending in the generatrix direction from the lower end edge 14C toward the upper end edge 14A, and a second convex portion 18b continuing from the first convex portion 18a and angled at ⁇ 3 toward the upper end edge 14A so as to avoid the rib 32, can be changed as desired.
  • FIG. 19 shows the eighth embodiment, which is another embodiment of the uneven pattern 15 shown in the first to seventh embodiments. This embodiment is commonly applicable to all of the first to seventh embodiments. Note that the number of convex portions 12A and concave portions 12B shown in the figure is one example and should not be interpreted as being limited, and the numbers in the above-mentioned embodiments can also be used.
  • Figure 19 (a) shows a configuration in which a convex portion 12A, a concave portion 12B, a convex portion 12A, a concave portion 12B, a convex portion 12A, a concave portion 12B, and a convex portion 12A are arranged between adjacent gap pieces 16, 16 (not shown) in the circumferential direction, and the convex portion 12A (12A') is located near each of the adjacent gap pieces 16, 16.
  • the depth D1 of the recess 12B (12B') adjacent to the protrusion 12A (12A') is made larger (deeper) than the height H of the protrusion 12A (12A') adjacent to the gap piece 16.
  • the size (height and depth) of the protrusion 12A and the recess 12B disposed between the recess 12B (12B') and the recess 12B (12B') is the same as that of the protrusion 12A (12A'). It is assumed that the size (depth) of the recess 12B (12B') is set to be larger (deeper) than 0.25 mm and the pitch is set to be larger than 0.5 mm.
  • Figure 19 (b) shows a configuration in which a recess 12B, a protrusion 12A, a recess 12B, a protrusion 12A, a recess 12B, a protrusion 12A, a recess 12B, a recess 12B, a recess 12B are arranged between adjacent gap pieces 16, 16 (not shown) in the circumferential direction, and the recess 12B (12B') is located near each of the adjacent gap pieces 16, 16.
  • the height H of the convex portion 12A (12A') adjacent to the concave portion 12B (12B') is made larger (higher) than the depth D1 of the concave portion 12B (12B') adjacent to the gap piece 16.
  • the size (height and depth) of the concave portion 12B and the convex portion 12A arranged between the convex portion 12A (12A') and the convex portion 12A (12A') is the same as that of the convex portion 12A (12A'). It is assumed that the size (depth) of the concave portion 12B (12B') is set to be larger (deeper) than 0.25 mm and the pitch is set to be larger than 0.5 mm.
  • Figure 19 (c) is the same as Figure 19 (b) in that the height H of the convex portion 12A (12A') adjacent to the recess 12B (12B') adjacent to the gap piece 16 is made larger (higher) than the depth D1 of the recess 12B (12B') adjacent to the gap piece 16.
  • the recesses 12B disposed between the protrusions 12A (12A') have the same size (height and depth) as the protrusions 12A (12A'), and the protrusions 12A disposed between the recesses 12B are smaller (lower) than the protrusions 12A (12A'). It is assumed that the size (depth) of the recesses 12B (12B') is set to be greater (deeper) than 0.25 mm, and the pitch is set to be greater than 0.5 mm.
  • uneven pattern disclosed in this specification and drawings is merely one embodiment of the present invention and is not to be construed as being limited thereto in any way. Any uneven pattern that can achieve the object of the present invention is within the scope of the present invention. In addition, the uneven patterns of each embodiment can be appropriately combined according to the specifications and can be adopted as desired within the scope of the present invention.
  • the present invention can be used in separation plate type centrifuge devices that separate components with different specific gravities contained in the fluid being treated, and in general separation plates used in such centrifuge devices.

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  • Centrifugal Separators (AREA)
PCT/JP2023/043999 2022-12-08 2023-12-08 遠心分離装置および分離板 Ceased WO2024122632A1 (ja)

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KR1020257022672A KR20250119628A (ko) 2022-12-08 2023-12-08 원심분리장치 및 분리판
JP2024563004A JP7719583B2 (ja) 2022-12-08 2023-12-08 遠心分離装置および分離板
CN202380093136.9A CN120641222A (zh) 2022-12-08 2023-12-08 离心分离装置和分离板
JP2025123094A JP2025148588A (ja) 2022-12-08 2025-07-23 遠心分離装置および分離板

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JP2022-196042 2022-12-08
JP2022196042 2022-12-08

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Publication number Priority date Publication date Assignee Title
CN121532255A (zh) * 2023-07-20 2026-02-13 三菱化工机株式会社 感测器

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4985662A (https=) * 1972-12-23 1974-08-16
WO2017203565A1 (ja) * 2016-05-23 2017-11-30 東京濾器株式会社 分離ディスク積層体
WO2021149239A1 (ja) * 2020-01-24 2021-07-29 三菱化工機株式会社 遠心分離装置および分離板
WO2022100954A1 (en) * 2020-11-12 2022-05-19 Alfa Laval Corporate Ab Centrifugal separator comprising a disc stack

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4745526B2 (ja) 2001-05-11 2011-08-10 三菱化工機株式会社 分離板型遠心分離機およびこれに用いる分離板
EP3124120B1 (en) 2014-03-27 2020-02-26 Tokyo Roki Co., Ltd. Oil separator

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4985662A (https=) * 1972-12-23 1974-08-16
WO2017203565A1 (ja) * 2016-05-23 2017-11-30 東京濾器株式会社 分離ディスク積層体
WO2021149239A1 (ja) * 2020-01-24 2021-07-29 三菱化工機株式会社 遠心分離装置および分離板
WO2022100954A1 (en) * 2020-11-12 2022-05-19 Alfa Laval Corporate Ab Centrifugal separator comprising a disc stack

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JP7719583B2 (ja) 2025-08-06
JP2025148588A (ja) 2025-10-07
JPWO2024122632A1 (https=) 2024-06-13
CN120641222A (zh) 2025-09-12

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