WO2013015237A1 - メディア攪拌式粉砕機 - Google Patents
メディア攪拌式粉砕機 Download PDFInfo
- Publication number
- WO2013015237A1 WO2013015237A1 PCT/JP2012/068567 JP2012068567W WO2013015237A1 WO 2013015237 A1 WO2013015237 A1 WO 2013015237A1 JP 2012068567 W JP2012068567 W JP 2012068567W WO 2013015237 A1 WO2013015237 A1 WO 2013015237A1
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- WIPO (PCT)
- Prior art keywords
- media
- separating member
- flow
- type pulverizer
- chamber
- Prior art date
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C17/00—Disintegrating by tumbling mills, i.e. mills having a container charged with the material to be disintegrated with or without special disintegrating members such as pebbles or balls
- B02C17/18—Details
- B02C17/1815—Cooling or heating devices
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C17/00—Disintegrating by tumbling mills, i.e. mills having a container charged with the material to be disintegrated with or without special disintegrating members such as pebbles or balls
- B02C17/16—Mills in which a fixed container houses stirring means tumbling the charge
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C17/00—Disintegrating by tumbling mills, i.e. mills having a container charged with the material to be disintegrated with or without special disintegrating members such as pebbles or balls
- B02C17/16—Mills in which a fixed container houses stirring means tumbling the charge
- B02C17/161—Arrangements for separating milling media and ground material
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C17/00—Disintegrating by tumbling mills, i.e. mills having a container charged with the material to be disintegrated with or without special disintegrating members such as pebbles or balls
- B02C17/16—Mills in which a fixed container houses stirring means tumbling the charge
- B02C17/168—Mills in which a fixed container houses stirring means tumbling the charge with a basket media milling device arranged in or on the container, involving therein a circulatory flow of the material to be milled
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C17/00—Disintegrating by tumbling mills, i.e. mills having a container charged with the material to be disintegrated with or without special disintegrating members such as pebbles or balls
- B02C17/18—Details
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C17/00—Disintegrating by tumbling mills, i.e. mills having a container charged with the material to be disintegrated with or without special disintegrating members such as pebbles or balls
- B02C17/18—Details
- B02C17/183—Feeding or discharging devices
- B02C17/1835—Discharging devices combined with sorting or separating of material
- B02C17/184—Discharging devices combined with sorting or separating of material with separator arranged in discharge path of crushing zone
Definitions
- the present invention relates to a media agitation type pulverizer.
- the media agitation type pulverizer of the present invention is composed of bead-like pulverizing / dispersing media using raw materials such as ink, paint, pigment, ceramic, metal, inorganic, dielectric material, ferrite, toner, glass, paper coating color, and other nanoparticles. It is particularly suitable for use for mixing and grinding or dispersing into fine particles, but is not limited thereto.
- the media agitating mill proposed in the above Japanese Patent Application Laid-Open No. 2005-199125 has a crushing tank having an end plate that closes the upper part and provided with a crushing chamber for containing crushing media therein, and is rotatable to the crushing tank.
- a media stirring mill provided with a rotating shaft provided and a stirring separation member provided at a portion of the rotating shaft located in the grinding chamber and rotatable integrally with the rotating shaft, the inner wall surface of the grinding chamber And the outer peripheral surface of the stirring member are formed in a shape that matches each other, penetrates from the outer peripheral surface of the stirring separation member to the central portion of the stirring member, and penetrates the central portion of the rotating shaft from that portion.
- a separation discharge path communicating with the outside of the grinding chamber and a pressure relief hole penetrating between the upper and lower surfaces of the stirring member in the axial direction of the rotating shaft and communicating with the upper portion and the lower portion of the grinding chamber are provided. Special It is an.
- the pulverized media is likely to be concentrated in the maximum diameter portion where the centrifugal force is maximum, becomes local, and the dispersion force and pulverization force vary depending on the location. Is big. Therefore, there is a problem that it is difficult to obtain a high quality product because the raw materials are not uniformly dispersed and pulverized.
- Japanese Patent Application No. 2009-103529 Japanese Patent Application Laid-Open No. 2010-253339
- a media agitation type pulverizer capable of obtaining a high-quality product by high-quality pulverization and dispersion. did.
- the media agitation pulverizer proposed in this patent application is a pulverization container having a vertical cylindrical pulverization chamber containing bead-shaped pulverization media, a raw material slurry supply port provided in the pulverization container, a lower portion of the pulverization chamber
- the media agitation type pulverizer provided with a stirring member having a rotation axis substantially coaxial with the axis of the pulverization chamber, and a media separation member provided in the pulverization chamber and above the agitation member
- the lower part of the crushing chamber is divided in a radial direction, and a guide ring is provided to constitute an inner part of the lower part of the crushing chamber and an outer part of the lower part of the annular crushing chamber. And an ascending passage for the mixture of the raw material slurry.
- the guide ring is installed in the pulverization chamber, so that the mixture of the pulverization media and the raw slurry is distributed in the circumferential direction.
- the moving flow i.e. the primary flow
- moves radially outward of the grinding chamber towards the inner wall of the grinding vessel then rises up the ascending passage between the guide ring and the grinding vessel, then from the center of the guide ring
- the volume ratio of the beads to the grinding chamber is small.
- segregation of the grinding media can be suppressed to some extent, and the grinding and dispersion efficiency can be improved.
- the spiral flow formed by the media agitating pulverizer proposed in this patent application has a weak secondary flow and is unstable, and the force is segregated by centrifugal force. As a result, segregation of the pulverized media occurred, and the pulverization was not uniform and the energy efficiency was not very good.
- An object of the present invention is to provide a media agitation type pulverizer that can handle the above.
- a media agitation pulverizer having the following constitutions (1) to (17).
- a crushing container having a vertical cylindrical crushing chamber containing an end plate closing the upper part and containing a bead-shaped crushing medium, a raw material slurry supply port provided in the crushing container, a lower part of the crushing chamber,
- the media agitation type pulverizer provided with a stirring member having a rotational axis substantially coaxial with the axis of the grinding chamber, and a media separating member provided above the stirring member, the grinding chamber
- the lower portion is divided in the radial direction, and a guide ring is provided to constitute an inner portion of the lower portion of the grinding chamber and an outer portion of the lower portion of the annular grinding chamber, and the flow of the mixture of the raw slurry and the grinding media is The primary flow in the direction and the secondary flow centered on the guide ring and the secondary flow flowing through the circulation passage with the lower part of the crushing chamber lower portion as the rising passage and the lower portion of the crushing chamber as the lower passage are mixed
- the media-agitation type pulverizer characterized in that a rotary flow suppressing means of stabilizing the helical flow to enhance the secondary flow.
- the media separating member is disposed in a cylindrical media separating member storage chamber provided on the end plate and having a lower portion opening at a lower portion opened to the grinding chamber, and the diameter of the media separating member storage chamber is
- the media agitation type pulverizer according to (1) or (2) above which is larger than the diameter of the media separating member and smaller than the diameter of the pulverization chamber.
- the media agitation type pulverizer according to (3) wherein the radius of the media separating member storage chamber is 10 to 30 mm larger than the radius of the media separating member.
- the media separating member is a circular top plate, a circular bottom plate arranged with an interval in the axial direction with respect to the top plate, and a plurality of blades arranged with a gap in the circumferential direction between the top plate and the bottom plate
- the guide ring has an annular space inside, is supported by a plurality of pipes attached to the pulverization vessel, and has a structure that allows water to drain into the annular space using the pipes.
- Type crusher. (10)
- the media flow restricting means is configured as a downwardly tapered truncated cone-shaped guide member having an internal space, and the mixture of the rising raw slurry and the grinding media is changed to a downward flow by the action of the stirring member.
- the media separating member includes a substantially conical or frustoconical media separating member main body having a reduced diameter portion and a base enlarged diameter portion, and the media separating member main body includes at least one in the vicinity of the reduced diameter portion.
- a transfer passage for the mixture extending from one inlet portion along the peripheral wall to the annular outlet portion of the base enlarged diameter portion, and the inlet portion sucks the mixture and allows it to flow into the transfer passage.
- a plurality of blade members for performing a pumping action of the media along the annular outlet portion are arranged in the vicinity of the annular outlet portion in the transfer passage.
- the media agitation type pulverization according to any one of the above (1) to (13), wherein a raw material slurry outlet passage branched upstream from a portion of the transfer passage where the blades are formed is provided.
- the media separating member includes a substantially conical or frusto-conical media separating member central member, and a hollow truncated conical shape as a whole, and a media separating member having a periphery spaced apart from the periphery of the media separating member central member.
- the media agitating pulverization according to any one of (1) to (13), further comprising an outer member, wherein the transfer passage is formed by a gap between the periphery of the media separating member central member and the periphery of the media separating member outer member Machine.
- the spiral flow of the mixture of the pulverization media and the raw slurry is prevented from rotating in the circumferential direction of the spiral flow, that is, the primary flow, while the secondary flow is suppressed.
- Strengthens the flow (circulating flow centered on the guide ring), stabilizes the spiral flow, and makes the distribution of the grinding media uniform in the flow, making it ideal for grinding and dispersion with high energy efficiency. It can be a frequency shear flow.
- a good spiral flow may be formed without having a rotational flow suppressing means as in the present invention, but this is an accidental product when all the conditions such as the viscosity of the mixture are satisfied.
- a complete helicoid flow is not always formed as in the present invention.
- FIG. 2 is a cross-sectional view taken along line AA in FIG. It is the figure which showed the rotational flow suppression means typically.
- FIG. 6 is a horizontal sectional view of the media separating member accommodation chamber.
- FIG. 3 is a cross-sectional view taken along line BB in FIG. It is an expanded sectional view showing a modification of a centrifugal type media separation member.
- FIG. 7 is a bottom view of the centrifugal media separating member shown in FIG. 6.
- FIG. 7 is a horizontal cross-sectional view of the vicinity of the tip of the centrifugal media separating member shown in FIG. 6. It is an expanded sectional view showing other modifications of a centrifugal type media separation member.
- FIG. 1 shows a media agitating crusher 10 according to an embodiment of the present invention.
- This media agitating crusher 10 includes a vertical cylindrical crushing container 12 having an end plate 12a that closes the upper part. I have.
- the crushing container 12 includes a cylindrical crushing chamber 14 inside, and has a raw material slurry supply port 16 for introducing a slurry-like raw material into the crushing chamber 14.
- a stirring member 22 is rotatably disposed in the center of the inside of the grinding chamber 14 of the grinding container 12.
- the agitating member 22 is an impeller, and includes, for example, a pair of annular plates 22b and 22c that are fixed around the boss 22a and spaced apart from each other, and a plurality of blades 22d disposed therebetween. Has been.
- the stirring member 22 has an upper end attached to the hub 22a of the stirring member 22, and a rotation drive shaft 24, which is a stirring member drive shaft that extends through the grinding container 12 and the frame 18 downward in the axial direction.
- the rotary drive shaft 24 has a lower end connected to a drive source via a well-known drive mechanism (not shown), and is driven to rotate in a direction indicated by an arrow in the figure.
- the rotation axis (rotation axis) of the rotation drive shaft 24 preferably passes through the central axis of the crushing chamber 14.
- the rotary drive shaft 24 is provided with a shaft seal 25 (mechanical seal or the like).
- the stirring member 22 may have a mixed flow blade structure in addition to the centrifugal blade described above.
- a bead-shaped pulverizing medium 30 (shown extremely enlarged in the figure) is accommodated in the pulverization container 12.
- the grinding media 30 those having a diameter of 0.02 to 2 mm can be used.
- the total volume of the grinding media is 30% to 75% of the volume of the grinding chamber.
- the total volume of the pulverization media is 75% to 90% of the volume of the pulverization chamber. Is possible.
- the media separating member 32 includes a boss 32a having a cylindrical main body having a space inside and a closing plate 32b for closing the lower portion of the main body.
- the main body of the boss 32a is provided with a plurality of holes, from which only the raw slurry is introduced into the space in the main body.
- the media separating member 32 is preferably arranged coaxially with the stirring member 22, but the axis may be shifted.
- a hollow rotary drive shaft 34 is fixed to the media separating member 32.
- the drive shaft 34 extends upward through the end plate 12a, and its end is connected to a drive source via a well-known drive mechanism (not shown) and is driven to rotate in the direction indicated by the arrow in the figure. .
- the rotary drive shaft 34 is provided with a shaft seal 36 (mechanical seal or the like).
- the hollow portion of the drive shaft 34 communicates with the internal space of the media separating member 32 to form a raw material slurry outlet 38.
- a conventional screen can also be used as the media separating member.
- the outer periphery of the pulverization container 12 is provided with a jacket 40 through which a refrigerant body or a heat medium (usually a refrigerant body and cooling water) passes, and the inside of the pulverization chamber 14 can be adjusted in temperature.
- the jacket 40 is provided with a cooling water inlet 42 for introducing cooling water into the lower portion and a cooling water outlet 46 for discharging cooling water into the upper portion.
- the grinding container 12 can be easily maintained by opening the grinding container 12 by removing the end plate 12a.
- the stirring member 22 can be driven at a rotational speed in the range of 5 to 30 m / s, and the media separating member 32 is in the range of 10 to 20 m / s. It can be driven at a rotational speed.
- a guide ring 50 is disposed in the lower part of the grinding chamber 14.
- the guide ring 50 includes an inner ring plate 52, an outer ring plate 54 spaced apart in the outer circumferential direction, an annular lower ring plate 56 constituting the lower side, and an upper ring plate 58 constituting the upper side. Is liquid-tight.
- the guide ring 50 divides the lower part of the crushing chamber 14 in the radial direction and constitutes a crushing chamber lower part inner part 14a and an annular crushing chamber lower part outer part 14b.
- the crushing chamber lower portion inner portion 14a functions as an ascending passage for the mixture of the grinding media and the raw slurry
- the grinding chamber lower portion outer portion 14b functions as an ascending passage for the mixture of the pulverizing media and the raw slurry. . Therefore, the flow of the mixture of the grinding media and the raw slurry moves in the grinding chamber 14 in a circumferential direction, that is, a primary flow, and moves radially outward of the grinding chamber toward the inner wall of the grinding container.
- the ascending passage between the guide ring and the crushing vessel is raised, and then the flow that can descend regularly from the center through the inside of the guide ring and return to the stirring member, that is, the secondary flow. It becomes a mixed flow, that is, a spiral flow.
- the spiral flow has a problem that the secondary flow is weak and unstable.
- a rotational flow suppressing means 92 (FIGS. 2 and 3) is provided for suppression.
- the rotational flow suppressing means 92 is preferably a cross-shaped member formed by combining plate-like bodies. This rotation is newly provided with a mixed flow of a circumferential flow (primary flow) and an axial circulation flow (secondary flow) formed mainly by the action of the stirring member 22 and the guide ring 50 of the mixture.
- the secondary flow is strengthened by the flow restraining means 92 to obtain a stable spiral flow.
- the distribution of the grinding media in the flow is made uniform, segregation of force due to centrifugal force is eliminated, and active shearing force is generated between the grinding media, thereby further improving the function of the grinding media.
- FIG. 2 a part of the stirring member 22 below the rotational flow suppressing means 92 appears, but this is for the convenience of drawing and does not actually appear.
- the guide ring 50 Since the guide ring 50 has the above-described structure, the guide ring 50 has an annular space 50a and is supported by a plurality of pipes 60a and 60b (see FIG. 2) attached to the pulverization container, and the pipes 60a and 60b are used to It is a structure that allows cooling water to flow through the annular space. Therefore, in the present invention, the raw slurry can be cooled also from the inside of the pulverization container 12.
- the pipes 60a and 60b extend from above the crushing container 12 as shown in the figure and support the guide ring 50 at the lower end.
- the lower end of the guide ring 50 is above the upper end of the stirring member 22, and the upper end of the guide ring 50 is at a position spaced apart from the lower end of the media separating member 32 by a predetermined distance. preferable.
- the distance between the outer peripheral wall of the guide ring and the inner peripheral wall of the grinding container is preferably 10 to 50 mm. If the interval is less than the above lower limit, the movement of the beads is excessively constrained, and if the interval exceeds the upper limit, the degree of freedom increases excessively.
- the height of the guide ring is preferably 1/3 to 2/3 of the height of the grinding chamber.
- the central portion of the end plate 12a is a thick portion 70 (thicker than the height of the media separating member) that is thicker than the surrounding portion.
- the through-hole 72 accommodates the media separating member 32 in a rotatable manner. That is, the through hole 72 is a media separation member accommodation chamber or a media separation chamber in which the media separation member 32 is accommodated, and the thick portion 70 constitutes a media separation member accommodation means.
- the entire end plate 12a may be formed as the thickness of the thick portion 70. However, this is not practical because a material cost is increased and the weight of the apparatus is increased.
- media flow restricting means 80 for restricting the grinding / dispersing medium 30 in the grinding chamber 14 from flowing into the separation member accommodating chamber.
- the media flow regulating means 80 has a cylindrical space 82 continuous with the through-hole 72 therein, and is configured as a truncated cone-shaped guide member that tapers downward.
- a guide surface 84 is provided. This media flow regulating means 80 changes the mixture of the rising raw material slurry and the bead-like grinding media into a downward flow along the guide surface 84 by the action of the stirring member 22, and eliminates unstable elements of the flow of the mixture.
- rotational flow suppressing means 90 for preventing disturbance of the flow of the mixture flowing from the grinding chamber into the media separating member accommodating chamber through the internal space. It is preferable to provide it.
- the rotational flow suppressing means 90 is preferably a cross shape formed by combining plate-like bodies.
- At least one, preferably a plurality (see FIG. 5) of flow control projections 76 are provided on the inner peripheral surface 74 of the media separating member housing means (thick portion 70).
- the flow control projection 76 has a substantially triangular shape with a horizontal cross section having a base on the inner peripheral surface 74, and a flow path 76b for media distribution is formed at the base (near the base) 76a. Is formed. It is preferable that the angle ⁇ formed between the side of the flow control projection 76 on which the triangular medium 30 flows, that is, the opposite side 76c and the inner peripheral surface 74, is an acute angle.
- the opposite side 76c directs the media in the direction of the inner peripheral surface 74 of the media separating member housing means (thick portion 70), that is, away from the media separating member 32, and around the media separating member 32. It is preferable to improve the media separating function of the media separating member 32 by lowering the media density of the media separating member 32.
- the media passage 76d that penetrates the triangular base portion of the flow control projection 76 in the circumferential direction. And the media is caused to flow downstream through the media passage 76d, thereby preventing the media from stagnating at the angular portion.
- the formation position of the media passage 76d may be changed depending on the height position of the flow control projection 76.
- the thick plate 70 is provided in the end plate 12 and the media separating member accommodating chamber is provided in the thick portion.
- the inside of the media flow regulating means 80 may be used as the media separating member accommodating chamber.
- the apparatus includes media separating member accommodating means disposed on the lower surface of the end plate and having a media separating member accommodating chamber that accommodates the media separating member, and the outer peripheral surface of the media separating member accommodating means is disposed in the grinding chamber. It is good also as a media flow control means which controls that the said grinding
- the media separating member accommodating means is disposed at the center of the lower surface of the end plate, and is configured by a downwardly tapered truncated cone-shaped member having the cylindrical inner space.
- the outer peripheral surface of the member is configured as a guide member that changes the mixture of the rising raw material slurry and the bead-like pulverization / dispersion media into a downward flow by the action of the stirring member.
- At least one protrusion is provided on the inner peripheral wall of the media separating member accommodating means, and the protrusion extends in the circumferential direction of the guide member so that the bead-like pulverized / dispersed media are distributed.
- a distribution channel is created to create a flow outside the media.
- the stirring member 22 is rotationally driven while introducing the raw material slurry containing the particles to be crushed as the raw material from the raw material slurry supply port 16 into the pulverization chamber 14.
- the slurry introduced into the pulverization chamber 14 is moved downward in the direction of the agitating member 22 on the rotating flow of the slurry already formed in the pulverizing chamber 14 and the medium 30, and is agitated and mixed by the agitating member 22. .
- the flow of the mixture of the raw slurry and the pulverized / dispersed media is strengthened by the secondary flow by the rotational flow suppressing means 92 and becomes a stable spiral flow.
- the slurry and the medium 30 are moved radially outward to the inner wall of the pulverization vessel 12, and the slurry and the medium 30 which have been stirred and mixed are then placed between the inner wall of the pulverization chamber 14 and the guide ring 50.
- the flow f moves up in the ascending passage, and when it rises up, this time, the flow descends earlier.
- the raw material slurry and the media are rotated by the media separating member 32. Due to this rotational movement, the medium having a large mass is biased radially outward and separated from the slurry. In this case, among the particles to be pulverized, particles that are not sufficiently pulverized and have a large particle size behave similarly to the media.
- the slurry containing particles that have been sufficiently pulverized and have a reduced mass enters the internal space of the media separation member 32 and is discharged to the outside of the media agitation pulverizer through the raw material outlet 38 inside the rotating shaft 34.
- the raw material particles are crushed and dispersed with high quality by the contact of the freely moving grinding media in the above-described ordered flow, and as a result, a high-quality product is obtained.
- the media agitation type pulverizer of the present invention pulverization with a narrow particle size distribution width can be achieved by the above-described action. Also, the amount of grinding media can be reduced.
- the interference of the media separation member 32 is extremely small.
- a centrifugal media separation member 132 as shown in FIGS. 6, 7, and 8 can also be used.
- the centrifugal media separating member 132 includes a substantially conical or frustoconical media separating member main body 134 having a distal diameter reducing portion 134a and a base diameter increasing portion 134b.
- the lower end of the drive shaft 130 is fixed to the center of the base enlarged portion 134b, and the media separation member 132 is rotated by rotating the drive shaft 130.
- the media separating member main body 134 has a transfer passage 135 for the mixture that extends from at least one inlet portion 135a in the vicinity of the tip reduced diameter portion 134a to an annular outlet portion 135b of the base enlarged diameter portion 134b along its peripheral wall. Is provided.
- the inlet portion 135 a functions as a mixture suction hole for sucking the mixture and flowing it into the transfer passage 135.
- a plurality of blade members 137 are arranged in the vicinity of the annular outlet portion 135 b along the annular outlet portion for performing a media pumping action.
- a raw material slurry outlet passage 139 branched from the portion where the blade member 137 is formed in the transfer passage 135 is provided.
- a treated raw material slurry collecting space 139 that is a substantially disk-shaped space is formed inside the base enlarged portion 134b of the media separating member main body 134, and this treated raw material slurry collecting space 139 is formed in the treated raw material slurry collecting space 139.
- the raw material slurry outlet passage 139a and the raw material slurry outlet 131 are communicated with each other.
- the media separating member main body 134 has a substantially conical or frustoconical media separating member central member 140 and a hollow truncated conical shape as a whole, and the periphery thereof is spaced apart from the periphery of the media separating member central member 140.
- the media separating member outer member 141 (see FIG. 8) is provided, and the transfer passage 135 is formed by a gap between the periphery of the media separating member central member and the periphery of the media separating member outer member.
- the structure of the media separating member main body 134 is preferably such that the leading end of the media separating member outer member 141 is fixed to the leading end of the media separating member central member 140.
- the front end of the media separating member outer member 141 is a circular front end plate 141a, and the mixture suction hole (inlet portion 135a) is formed in the circular front end plate 141a. Is formed.
- the slurry containing particles that have been sufficiently pulverized and reduced in size and lightness is discharged to the outside of the media agitation pulverizer via the raw slurry outlet passage 139, the treated raw slurry collection space 140, and the raw slurry outlet 131. .
- the present media separating member has the above-described structure, the flow of the media-containing raw material slurry in and around the media separating member is stabilized, a field without turbulence is formed, and good media separation is possible.
- the structure in which the entire media separation member rotates that is, the structure in which the media separation member central member and the media separation member outer member rotate together has been described.
- the medium separating member outer member may be fixed and only the media separating member central member may be rotated.
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Abstract
Description
(1)
上部を閉鎖する端板を有し、ビーズ状粉砕メディアを収容した竪型円筒形の粉砕室を有する粉砕容器、この粉砕容器に設けられた原料スラリー供給口、前記粉砕室の下部であって、該粉砕室の軸心とほぼ同軸の回転軸を持つ撹拌部材、および前記粉砕室内であって、前記撹拌部材の上方に設けられたメディア分離部材を備えたメディア攪拌式粉砕機において、前記粉砕室下方部分を半径方向に分割し、粉砕室下方部分内方部と環状の粉砕室下方部分外方部とを構成する案内環を設け、原料スラリーと粉砕メディアの混合物の流れを、粉砕室の周方向への一次流れと、前記案内環を中心として、前記粉砕室下方部分外方部を上昇通路とし、粉砕室下方部分内方部を下降通路とする循環流路を流れる二次流れが混合した螺旋流とするとともに、粉砕室内に、この螺旋流の一次流れを抑制する一方、二次流れを強化して前記螺旋流を安定化する回転流動抑制手段を設けたことを特徴とするメディア攪拌式粉砕機。
(2)
前記回転流動抑制手段が、前記案内環の内部に設けられ、板状体を組み合わせて形成されたものである上記(1)のメディア攪拌式粉砕機。
(3)
前記メディア分離部材が、前記端板に設けられ、下部が前記粉砕室に開口した下面開口となっている円筒形のメディア分離部材収納室内に配置されており、このメディア分離部材収納室の直径が、前記メディア分離部材の直径より大きく、前記粉砕室の直径より小さい上記(1)または(2)のメディア攪拌式粉砕機。
(4)
前記メディア分離部材収納室の半径が、メディア分離部材の半径より10~30mm大きい上記(3)のメディア攪拌式粉砕機。
(5)
前記メディア分離部材が、円形の天板、この天板に対し軸方向に間隔をもって配置された円形の底板、およびこれらの天板と底板の間で、周方向に間隔をもって配置された複数の羽根部材を備えている上記(1)~(4)のいずれかのメディア攪拌式粉砕機。
(6)
前記天板と底板の間に環状の中間板を設け、前記メディア分離部材を多段構造とした上記(5)のメディア攪拌式粉砕機。
(7)
前記案内環は内部に環状空間を有し、前記粉砕容器に取り付けられた複数のパイプによって支えられ、該パイプを用いて前記環状空間に通水排水が可能な構造である上記(1)~(6)のいずれかのメディア攪拌式粉砕機。
(8)
前記パイプが粉砕容器の上方から延び、下端で前記案内環を支持している上記(7)のメディア攪拌式粉砕機。
(9)
前記端板の前記下面開口を取り囲み、前記粉砕室内の前記粉砕メディアが前記分離部材収容室内に流れ込むのを規制するメディア流規制手段を設けた上記(3)~(8)のいずれかのメディア攪拌式粉砕機。
(10)
前記メディア流規制手段が、内部空間を有する下向きに先細の円錐台形状の案内部材として構成され、前記攪拌部材の作用により、上昇してくる原料スラリーと粉砕メディアの混合物を下向きの流れに変えるようになっている上記(9)のメディア攪拌式粉砕機。
(11)
前記メディア分離部材収容手段の内周壁に少なくとも1つの突起を設けると共に、該突起に案内部材の周方向に延び、前記粉砕メディアが流通する流通通路を設けた上記(3)~(10)のいずれかのメディア攪拌式粉砕機。
(12)
前記突起が、前記メディア分離部材収容手段の内周壁に底辺を有する三角形形状である上記(11)のメディア攪拌式粉砕機。
(13)
前記流通通路が、前記メディア分離部材収容手段の三角形の基部に設けられている上記(11)または(12)のメディア攪拌式粉砕機。
(14)
前記メディア分離部材は、先端縮径部および基部拡径部を備えたほぼ円錐形状または円錐台形状のメディア分離部材本体を備え、このメディア分離部材本体には、前記先端縮径部近傍の少なくとも1つの入口部からその周壁に沿って前記基部拡径部の環状の出口部まで延びる前記混合物の移送通路が設けられており、前記入口部は、前記混合物を吸い込み、前記移送通路に流入させるための混合物吸い込み孔として作用するものであり、前記移送通路には、その環状の出口部近傍に、該環状の出口部に沿ってメディアのポンプ作用を行うための羽根部材が複数配列されており、更に前記移送通路の前記羽根が形成された部分より上流側で分岐した原料スラリー出口通路が設けられている上記(1)~(13)のいずれかのメディア攪拌式粉砕機。
(15)
前記メディア分離部材は、ほぼ円錐形状または円錐台形状のメディア分離部材中心部材、および全体として中空円錐台形状で、周辺が前記メディア分離部材中心部材の周辺と間隔を隔てて配置されたメディア分離部材外側部材を備え、前記メディア分離部材中心部材の周辺とメディア分離部材外側部材の周辺の間の間隙によって前記移送通路が形成されている上記(1)~(13)のいずれかのメディア攪拌式粉砕機。
(16)
前記メディア分離部材外側部材の先端が、前記メディア分離部材中心部材の先端部に固定されている上記(15)のメディア攪拌式粉砕機。
(17)
前記メディア分離部材外側部材の先端部材が、円形の先端端板とされており、この円形の先端端板に前記混合物吸い込み孔が形成されている上記(16)のメディア攪拌式粉砕機。
前記攪拌部材22は、上記した遠心羽根の他、斜流羽根の構造であっても良い。
12 粉砕容器
14 粉砕室
16 原料スラリー供給口
18 フレーム
22 攪拌部材
24 回転駆動軸
25 軸封
30 粉砕メディア
32 メディア分離部材
32a ハブ部
32b 閉鎖板
34 中空駆動軸
36 軸封
38 原料出口
40 ジャケット
40a 冷却水入口
40b 冷却水出口
50 案内環
52 内周環板
54 外周環板
56 下環板
58 上環板
60a パイプ
60b パイプ
70 肉厚部(メディア分離部材収容手段)
72 貫孔(メディア分離部材収容室)
74 メディア分離部材収容手段(肉厚部70)の内周部
76 突起
80 メディア流規制手段
82 円筒状の空間
84 案内面
90 整流手段
92 回転流動抑制手段
Claims (17)
- 上部を閉鎖する端板を有し、ビーズ状粉砕メディアを収容した竪型円筒形の粉砕室を有する粉砕容器、この粉砕容器に設けられた原料スラリー供給口、前記粉砕室の下部であって、該粉砕室の軸心とほぼ同軸の回転軸を持つ撹拌部材、および前記粉砕室内であって、前記撹拌部材の上方に設けられたメディア分離部材を備えたメディア攪拌式粉砕機において、前記粉砕室下方部分を半径方向に分割し、粉砕室下方部分内方部と環状の粉砕室下方部分外方部とを構成する案内環を設け、原料スラリーと粉砕メディアの混合物の流れを、粉砕室の周方向への一次流れと、前記案内環を中心として、前記粉砕室下方部分外方部を上昇通路とし、粉砕室下方部分内方部を下降通路とする循環流路を流れる二次流れが混合した螺旋流とするとともに、粉砕室内に、この螺旋流の一次流れを抑制する一方、二次流れを強化して前記螺旋流を安定化する回転流動抑制手段を設けたことを特徴とするメディア攪拌式粉砕機。
- 前記回転流動抑制手段が、前記案内環の内部に設けられ、板状体を組み合わせて形成されたものである請求項1のメディア攪拌式粉砕機。
- 前記メディア分離部材が、前記端板に設けられ、下部が前記粉砕室に開口した下面開口となっている円筒形のメディア分離部材収納室内に配置されており、このメディア分離部材収納室の直径が、前記メディア分離部材の直径より大きく、前記粉砕室の直径より小さい請求項1または2のメディア攪拌式粉砕機。
- 前記メディア分離部材収納室の半径が、メディア分離部材の半径より10~30mm大きい請求項3のメディア攪拌式粉砕機。
- 前記メディア分離部材が、円形の天板、この天板に対し軸方向に間隔をもって配置された円形の底板、およびこれらの天板と底板の間で、周方向に間隔をもって配置された複数の羽根部材を備えている請求項1~4のいずれかのメディア攪拌式粉砕機。
- 前記天板と底板の間に環状の中間板を設け、前記メディア分離部材を多段構造とした請求項5のメディア攪拌式粉砕機。
- 前記案内環は内部に環状空間を有し、前記粉砕容器に取り付けられた複数のパイプによって支えられ、該パイプを用いて前記環状空間に通水排水が可能な構造である請求項1~6のいずれかのメディア攪拌式粉砕機。
- 前記パイプが粉砕容器の上方から延び、下端で前記案内環を支持している請求項7のメディア攪拌式粉砕機。
- 前記端板の前記下面開口を取り囲み、前記粉砕室内の前記粉砕メディアが前記分離部材収容室内に流れ込むのを規制するメディア流規制手段を設けた請求項3~8のいずれかのメディア攪拌式粉砕機。
- 前記メディア流規制手段が、内部空間を有する下向きに先細の円錐台形状の案内部材として構成され、前記攪拌部材の作用により、上昇してくる原料スラリーと粉砕メディアの混合物を下向きの流れに変えるようになっている請求項9のメディア攪拌式粉砕機。
- 前記メディア分離部材収容手段の内周壁に少なくとも1つの突起を設けると共に、該突起に案内部材の周方向に延び、前記粉砕メディアが流通する流通通路を設けた請求項3~10のいずれかのメディア攪拌式粉砕機。
- 前記突起が、前記メディア分離部材収容手段の内周壁に底辺を有する三角形形状である請求項11のメディア攪拌式粉砕機。
- 前記流通通路が、前記メディア分離部材収容手段の三角形の基部に設けられている請求項11または12のメディア攪拌式粉砕機。
- 前記メディア分離部材は、先端縮径部および基部拡径部を備えたほぼ円錐形状または円錐台形状のメディア分離部材本体を備え、このメディア分離部材本体には、前記先端縮径部近傍の少なくとも1つの入口部からその周壁に沿って前記基部拡径部の環状の出口部まで延びる前記混合物の移送通路が設けられており、前記入口部は、前記混合物を吸い込み、前記移送通路に流入させるための混合物吸い込み孔として作用するものであり、前記移送通路には、その環状の出口部近傍に、該環状の出口部に沿ってメディアのポンプ作用を行うための羽根部材が複数配列されており、更に前記移送通路の前記羽根が形成された部分より上流側で分岐した原料スラリー出口通路が設けられている請求項1~13のいずれかのメディア攪拌式粉砕機。
- 前記メディア分離部材は、ほぼ円錐形状または円錐台形状のメディア分離部材中心部材、および全体として中空円錐台形状で、周辺が前記メディア分離部材中心部材の周辺と間隔を隔てて配置されたメディア分離部材外側部材を備え、前記メディア分離部材中心部材の周辺とメディア分離部材外側部材の周辺の間の間隙によって前記移送通路が形成されている請求項1~13のいずれかのメディア攪拌式粉砕機。
- 前記メディア分離部材外側部材の先端が、前記メディア分離部材中心部材の先端部に固定されている請求項15のメディア攪拌式粉砕機。
- 前記メディア分離部材外側部材の先端部材が、円形の先端端板とされており、この円形の先端端板に前記混合物吸い込み孔が形成されている請求項16のメディア攪拌式粉砕機。
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WO2017217093A1 (ja) * | 2016-06-14 | 2017-12-21 | アシザワ・ファインテック株式会社 | メディア循環型粉砕機 |
JP2020163266A (ja) * | 2019-03-29 | 2020-10-08 | アシザワ・ファインテック株式会社 | メディア撹拌型粉砕機および循環型粉砕装置 |
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WO2016160616A1 (en) * | 2015-03-27 | 2016-10-06 | Edeniq, Inc. | High-solids biomass slurry generation for enhanced efficiency hydrolysis processing – and equipment design to yield the same |
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CN108130416B (zh) * | 2017-12-25 | 2019-11-01 | 杭州耀晗光伏技术有限公司 | 钕铁硼超细粉废料的处理装置 |
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US9089846B2 (en) | 2015-07-28 |
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KR20140056173A (ko) | 2014-05-09 |
CN103747877B (zh) | 2016-02-24 |
EP2737955B1 (en) | 2016-07-20 |
TW201313322A (zh) | 2013-04-01 |
US20140091165A1 (en) | 2014-04-03 |
CN103747877A (zh) | 2014-04-23 |
KR101864915B1 (ko) | 2018-06-05 |
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