JP3621386B2 - Pulverizer - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a fine pulverizer for further finely pulverizing an object to be processed such as roughly crushed raw materials and waste.
[0002]
[Prior art]
Raw materials such as ores and other industrial materials are often used after being finely pulverized. For this purpose, the raw materials are usually roughly crushed and then finely pulverized. Is used. As the fine crusher, for example, an attrition mill using a milling mill and several kinds of ball mills are known.
[0003]
Even in the field of waste treatment, it is sometimes necessary to further pulverize the processed material crushed from the crusher into fine powder. For example, game machines, game machines, pachinko machines, etc. are discarded in large quantities after being used, but these are made of plastic, wood, metal, etc., and the device base, frame, and main body are formed. A large number of components such as electronic devices and wiring boards / base materials, switches, display boards, wiring wires, and the like are mounted. In order to further recover and process such waste, it is necessary to separate and recover metals, plastics, glass, and other useful materials.
[0004]
Conventionally, it was manually disassembled and the parts were removed and collected. In the conventional disassembling work, only the assembly parts can be disassembled by humans, the processing speed is low, the recovery cost is relatively expensive, and it is insufficient for efficient mass processing. .
[0005]
On the other hand, these wastes are crushed and separated mechanically or chemically. In the case of mechanical treatment, many crushers that crush waste to a size of about 30 to 50 mm are known.
[0006]
[Problems to be solved by the invention]
The separation method for crushing and collecting the waste of equipment is combined with various methods such as sorting by gravity sorting, magnetic separation, wind sorting, etc., or dissolving in a solution or heating and melting and separating later. Thus, each material type is separated and collected, and the collected material is further reused.
[0007]
In order to perform these treatments, it is necessary to pulverize more finely than the above pulverized particle size, and if pulverized, the fluidity becomes higher and wind sorting can be easily performed, and the surface area per unit weight is reduced. It can be expected that the dissolution rate will increase and the dissolution energy will be reduced. By finely pulverizing the combustible material, the fluidity is enhanced and the supply becomes easy, and the fuel can be used as a fuel having a good mixing property with air and good combustibility.
[0008]
However, in order to further pulverize the crushed material once the waste has been crushed, the above-described attrition mill and ball mill have a low pulverization speed, and in particular, a particle size of 5 mm or less, for example, 0.01-3. It was difficult to finely and finely pulverize 0 mm.
[0009]
Furthermore, in the pulverization process, in order to recover rubber from other wastes, for example, discarded automobile rubber tires, it is necessary to recover lead wires and cord wires from the crushed tires. A fine rubber powder may be obtained by pulverization, and the steel powder from the wire can be easily separated from the rubber powder.
[0010]
In addition to mineral materials such as rocks, ores, glass, and ceramics as described above, the raw materials are efficiently pulverized as well as examples of materials that are relatively soft, such as wooden materials such as wood. There is also a demand for fine powder materials such as powder, plastics, and fibers.
[0011]
In view of the above-mentioned problems, the present invention is intended to provide a fine pulverizer capable of finely pulverizing various raw materials and waste that are roughly crushed finer, in large quantities, and efficiently. .
[0012]
[Means for Solving the Problems]
The waste pulverizer of the present invention has an upper end, a lower end, and a cylindrical peripheral wall, a supply port for supplying a crushed material to be processed to either the upper end or the lower end, and a pulverization to the other A vertical casing that is rotatably supported by an upper end portion and a lower end portion in the center of the interior of the saddle casing, and an interior of the saddle casing. A plurality of main suction blades of the rotationally driven workpiece attached to the vertical rotation shaft and a plurality of vertical attachments to the vertical rotation shaft at least in the middle of the saddle-shaped casing A rotary crushing blade that is mounted around a rotating disk and driven to rotate, and a fixed crushing blade that is provided on the inner surface of the peripheral wall of the bowl-shaped casing so that the rotary crushing blade is opposed to and close to the inner surface of the peripheral wall. Ah is, the rotating grinding blade, upper A plurality of brackets inserted into kerfs formed radially at equal intervals around the outer periphery of the rotating disk and fixed vertically by welding, and screws from the rotating direction side to the surface on the rotating direction side of the bracket. It is characterized by comprising a vertical blade that is replaceable by screw means including an inserted bolt and that can be adjusted with respect to the fixed crushing blade.
[0013]
In the fine pulverizer according to the present invention, the main suction blade attached to the discharge port side of the vertical rotation shaft as the vertical rotation shaft rotates sucks the object to be treated together with the air from the supply port into the vertical casing. . The sucked workpiece is pulverized into a fine powder between a large number of rotary pulverization blades and fixed pulverization blades in the process of moving through the bowl-shaped casing to the discharge port, and is discharged from the discharge side.
[0014]
It is preferable that the interval between the rotary pulverizing blade and the fixed pulverizing blade can be accurately adjusted on the rotary pulverizing blade side, and the particle size of the finely pulverized fine powder can be adjusted. By this fine pulverization, fine powder having a particle size in the range of 0.01 to 3.0 mm is obtained.
A plurality of brackets which are inserted into kerfs formed radially at equal intervals in the outer periphery of the rotating disk and fixed vertically by welding are bolts screwed into the rotating direction side from the rotating direction side. The vertical blade is fixed by the screw means included, and the load at the time of crushing is mostly applied to the side surface in the rotational direction of the bracket rather than the screw.
[0015]
In the fine pulverizer of the present invention, the material to be processed widely includes raw materials roughly crushed by a known crusher and waste crushed materials. Raw materials include, for example, crushed rocks or ores, wood pieces, plastic pieces, metal pieces, fiber pieces, paper pieces, and the like. Waste includes crushed pieces of discarded machinery, especially crushed pieces of machine parts and electrical parts, wiring boards, electric wires and crushed residues, fiber pieces, paper pieces, and other plastic fragments. Includes crushed rubber waste.
The pulverizer of the present invention can be widely used for applications in which pulverized materials and wastes are further pulverized to prepare fine fine powders, in particular, a particle size of about 0.01 to 3.0 mm. it can.
The fine pulverizer of the present invention can perform batch-type operations for different lots such as the types of workpieces, and can perform large-scale processing by continuous charging and continuous fine pulverization.
[0016]
DETAILED DESCRIPTION OF THE INVENTION
In the fine pulverizer of the present invention, the vertical casing has an upper end, a lower end, and a cylindrical peripheral wall, and a supply port for supplying a crushed product is disposed at either the upper end or the lower end. On the other hand, an outlet for finely pulverized material is arranged. The vertical rotation shaft is arranged vertically inside the casing, and the rotary rotation blade is fixed to the vertical rotation shaft and the main suction blade on the discharge side is driven to rotate.
[0017]
The supply port can be provided at the lower end of the saddle casing, and in this case, the discharge port is provided at the upper end of the saddle casing. In the arrangement of the supply port and the discharge port, the crushed material to be processed, which is to be finely pulverized, is sucked by the main suction blade provided on the discharge side, and the crushing blade is rotated from the bottom together with the air current in the casing. While being lifted between the fixed crushing blades, it is finely broken and refined between the rotary crushing blades and the fixed crushing blades. Large and heavy processed particles are easy to move down against the airflow under their own weight, and are further crushed by the crushing blade on the lower side, and only fine particles are conveyed to the airflow, Finely pulverized while moving upward, and only light fine powder is discharged. The fine pulverizer of the present invention collects only fine crushed material from the discharge port while frequently repeating pulverization and classification by its own weight and airflow for the crushed material in the pulverization process.
[0018]
Regarding rotary crushing blades and fixed crushing blades, a multistage rotating disk is fixed to the vertical rotating shaft on the vertical axis inside the vertical casing, and rotating crushing blades that are equally spaced in the circumferential direction are fixed to each rotating disk. Thus, the rotary crushing blade is rotated by the rotation of the vertical rotation shaft. On the other hand, the other fixed crushing blade can be fixed to the inner wall of the vertical casing so as to face the rotary crushing blade and be close to each other.
[0019]
As the rotary crushing blade, it is preferable to use a plurality of vertical blades attached to the outer peripheral portion of the rotating disk so as to be exchanged at regular intervals and to be adjustable with respect to the fixed crushing blade. By making the rotary crushing blade a vertical blade, the sweeping area of the crushing blade can be increased, and a fine crushing work area can be taken for the object to be treated that stays on the inner wall of the casing. I can work.
Further, it is particularly preferable that the rotary crushing blade allows fine adjustment of the interval between the cutting edge and the fixed crushing blade. The particle size of the finely pulverized product can be adjusted to some extent by adjusting the gap between the rotary pulverizing blade and the fixed pulverizing blade.
[0020]
By using the rotary crushing blade of the fine crusher as a vertical blade, there is an advantage that only the worn crushing blade can be appropriately replaced. In addition, a disk is used as the rotating disk, and there is an advantage that the vertical blades are arranged at equal intervals around the disk-shaped rotating disk circumference so that the rotation balance can be easily achieved and vibration during rotation can be reduced.
[0021]
The fixed pulverizing blade can be formed into a serrated fixed blade, ie, an uneven tooth shape, which is attached to the rotary pulverizing blade so as to be exchangeable over the entire inner surface of the bowl-shaped casing. By using irregular teeth, the worn fixed grinding blade can be replaced as appropriate. The rotary crushing blade is capable of exerting a fine crushing action on the workpiece at all times, facing the serrated fixed crushing blade over the entire inner circumference of the casing, and can perform an efficient crushing operation.
[0022]
It is preferable to provide an auxiliary suction blade for the object to be processed on the supply port side. The auxiliary suction blade is fixed to a vertical rotating shaft and is driven to rotate, and the object to be processed is fed into the vertical casing by the auxiliary suction blade. To do. In particular, when the suction port is arranged from the lower supply port to the upper discharge port and a sufficient amount cannot be sucked by the main suction blade alone, the suction amount can be compensated by the auxiliary suction blade. In particular, when the object to be processed is relatively large particles and has a large unit weight and easily sinks in an air current, it can be suitably used.
[0023]
It is preferable that the vertical rotation shaft is rotatably supported by a motor at a bearing end portion which is supported at a lower portion thereof by a central bearing at a lower end portion of the bowl-shaped casing and protrudes downward from the lower end portion. Further, the upper casing can be formed by covering the bowl-shaped casing with the cover. In this case, the bearing can be fixed to the center of the cover, and the vertical rotation shaft can be supported by the bearing. Thus, the stability of the fine pulverizer is enhanced by arranging the rotation driving device of the vertical rotation shaft on the lower side of the fine pulverizer. Opening a part of the upper end portion of the saddle-shaped casing of the cover constituting the upper end portion facilitates internal inspection and replacement of the fixed crushing blade.
From the viewpoint of replacement, the fixed crushing blade is preferably a dovetail engaging type with respect to the inner wall.
[0024]
The lower end is mounted on the pedestal with its bottom plate, and when the bowl-shaped casing is releasably attached to the bottom plate at the lower end, the casing is released from the bottom plate at the lower end and lifted upward to remove. Thus, the vertical rotating shaft, the rotating disk and the rotating pulverizing blade can be exposed, and the stationary pulverizing blade can be easily exchanged for the bowl-shaped casing and the rotating pulverizing blade can be easily replaced with the rotating disk.
[0025]
In the bowl-shaped casing, the circumferential wall is divided into at least two parts in the circumferential direction, and the divided circumferential walls are joined to each other by a bowl-shaped flange provided at the edge of the circumferential wall to form a cylindrical casing. The fixed crushing blade is fixed inside each divided peripheral wall. Since the casing peripheral wall is divided in this way, the inside of the casing can be opened in a wide range, the internal inspection and the exchange of the rotating crushing blade with respect to the rotating disk can be easily performed, and the exchange of the fixed crushing blade with respect to the inner surface of the casing can be easily performed.
[0026]
The vertical casing has an inspection door that can be opened and closed across the rotating disk on its cylindrical peripheral wall, and if the fixed crushing blade is replaceably attached to the inner surface of the inspection door, it can be easily opened and closed by opening and closing the inspection door. Inspection and replacement of the rotating crushing blade for the rotating disk can be easily performed.
[0027]
It is preferable that the rotary crushing blade is attached to the rotating disk so that the gap gradually decreases from the supply port side to the discharge port side with respect to the fixed crushing blade. A relatively large size object is finely pulverized from the beginning, and the object to be processed is pulverized smaller step by step without receiving a large load, and is finely pulverized as a whole from the supply port side to the discharge port side. The load received by the crushing blade can be equalized, and local wear on the supply side portion of the rotary blade and the fixed crushing blade can be prevented.
[0028]
The fine pulverizer of the present invention can be used for fine pulverization of raw materials and waste. The raw material is used for fine grinding of rocks, ores, and ceramics. For example, it can be used for fuel coal with a large specific surface area by finely pulverizing coal to increase the combustion efficiency of coal boilers, and it can be applied to finely pulverize limestone to increase the immediate effect as a soil neutralizer. Can do.
[0029]
The fine pulverizer of the present invention can also be used for fine pulverization of wood materials. Further, the wood chips are further finely pulverized to form a wood powder, which is then combined with a synthetic resin and used to form a wooden building material, particularly a board. be able to. The mixing of the wood powder in the resin has the effect of preventing the distortion of the plastic plate due to heat. Fine wood powder particles can also be used as an agglomerate for wastewater treatment.
[0030]
The fine pulverizer of the present invention can be applied to fine pulverization even for plastic materials for extrusion molding. Fine plastic raw materials enhance the ability to transport and melt powders in plastic extruders, and are applied to fine powders of two or more types of polymer materials with different properties to create a plastic fine powder for creating polymer alloys. Can be provided.
[0031]
Regarding the treatment of waste, the pulverizer of the present invention can be used to prepare a fine powder as a pretreatment for separating fiber waste, waste tire chips, waste wire chips, and the like. In the fiber waste, a very fine pulverization is performed as a pretreatment for chemically and physically separating the fibers for each type from a mixture of various types of fibers. As described above, the roughly crushed chip of tire rubber includes a broken piece of cord wire or bead wire in the rubber chip, but by finely pulverizing the rubber fine powder and steel powder are separated in the finely pulverized product. Therefore, it can be easily separated by an appropriate method such as air separation.
[0032]
In addition, the fine pulverizer of the present invention can apply fine pulverization in order to separate the constituent materials of the composite material. For example, it can be used to separate resin powder and fiber powder by rough crushing and fine pulverization from wastes of composite materials such as fiber reinforced resin materials. For example, it is used to separate fibers and rubber or resin into fine powders such as carpets. Furthermore, the waste of the heat insulating material and the reflecting material including the bonding material made of the resin film and the aluminum foil can be easily separated into the resin powder and the aluminum powder by pulverizing. A board waste made of a wood chip and a resin as a binder, such as a plastic plywood, is easily pulverized to facilitate separation into wood powder and plastic powder.
[0033]
【Example】
In FIGS. 1 to 4, an example of the pulverizer 1 is shown. The pulverizer 1 includes an upper end portion 11, a cylindrical peripheral wall 15, and a lower end portion 13 formed by a lower end portion of the peripheral wall 15. A bowl-shaped casing 10 having a supply port 14 for the workpiece W at the lower end portion 13 and a discharge port 12 for the finely pulverized product at the upper end portion 11 is included. A vertical rotation shaft 20 is rotatably supported by bearings B <b> 1 and B <b> 2 provided at the upper end portion 11 and the lower end portion 13 at the center inside the saddle-shaped casing 10 and extends vertically.
[0034]
In the saddle-shaped casing 10, a main suction blade 21 is attached to the discharge port side of the vertical rotating shaft 20, and the finely pulverized material w is once collected at the center as shown by an arrow Y2, and then sent to the outer periphery. In this example, an auxiliary suction blade 23 is attached to the supply port side of the vertical rotating shaft 20 to feed the workpiece W from the central portion to the outer peripheral portion after suction as indicated by an arrow Y1.
[0035]
The rotary crushing vertical blade 27 has a plurality of, for example, five rotating plates 25 attached up and down between the suction blades 21 and 23 in the middle of the vertical rotating shaft 20, and a large number around the rotating plate 25. For example, 24 sheets are attached, and the fixed crushing blade 30 is provided on the inner surface of the bowl-shaped casing 10 so as to face the cutting edge of the crushing vertical blade 27.
[0036]
The casing 10 is attached in a bowl shape on the gantry 5 with a bottom plate 13a at the lower end 13 thereof, and is removably attached to the bottom plate 13a with a lower end flange 13b. Therefore, the vertical casing 10 can be exposed from the bottom plate 13a, pulled up and removed to expose the vertical rotary shaft 20, the rotary plate 25, and the rotary crushing blade 27, so that maintenance and inspection can be easily performed.
[0037]
The vertical rotating shaft 20 is vertically supported rotatably by a thrust / radial bearing B2 attached to the center portion of the bottom plate 13a. On the gantry 5, an electric motor M is arranged in parallel. The electric motor M rotationally drives the vertical rotating shaft 20 via the pulley P and the belt V at the end 20b of the vertical rotating shaft protruding downward from the bottom plate 13a.
[0038]
In this example, the rotation speed of the vertical rotation shaft is rotationally driven at about 2000 rpm when the rotary disk 25 having a diameter of 945 mm is provided. To the supply port 14, a piece-like workpiece W that has been crushed in advance by, for example, about 30 to 50 mm by a crusher is continuously supplied.
[0039]
The saddle-shaped casing 10 has an upper end portion 11 formed by a cover having a discharge port 12. The casing 10 and the cover 11 are in communication with each other and are releasably connected via flanges 10b and 11b. The cover 11 has an upper bearing B1 of the vertical rotating shaft 20 mounted in the center of the cover 11 and a guide plate 11a for guiding the fine powder w to the discharge port 12. The upper bearing B1 is covered with a protective cap C1 against the fine powder w.
[0040]
On the other hand, the lower end portion 13 of the bowl-shaped casing 10 includes therein a guide plate 13 c that guides the workpiece W from the supply port 14 to the central portion of the auxiliary suction blade 23. The saddle-shaped casing 10 includes a pair of front and rear inspection doors 19 that can be opened and closed across five rotating disks 25 on the cylindrical peripheral wall 15. A fixed crushing blade 30 is replaceably attached to the inner surface of the inspection door 19 so that the internal inspection and the exchange of the rotating crushing blade 27 with respect to the rotating disk 25 can be easily performed by opening and closing the inspection door 19.
[0041]
The peripheral casing 10 is divided into at least two peripheral walls at the periphery, and the respective peripheral peripheral walls are connected to each other by a flange-shaped flange. Correspondingly, the fixed crushing blade 30 is also provided in a split state on each peripheral peripheral wall. It has been. Since the peripheral wall can be divided, the internal inspection and the rotation crushing blade 27 can be easily replaced, and the fixed crushing blade 30 can be easily replaced.
[0042]
In FIG. 1 and FIG. 2, a large number of turntables 25 are fixed in multiple stages by radial ribs 26 b to a sleeve 26 a that is fixed to the vertical rotation shaft 20 with a key and functions as a spacing piece. A large number of vertical bracket plates are fixed to the outer periphery of each turntable 25 at equal intervals by welding. A large number (24 in this example) of rotary crushing blades 27 are attached to each bracket so as to be replaceable and adjustable with respect to the fixed crushing blade 30.
[0043]
Each bracket 26 is a rectangular outer plate, and is inserted into kerfs formed radially at equal intervals around the outer periphery of the rotating disk 25 and fixed vertically by welding. Each bracket 26 is attached with a screw S1 with a vertical blade 27, which is a rotary crushing blade, on the surface in the rotational direction through a screw hole on the outer peripheral side. The rotary crushing blade 27 is attached to the side surface in the rotation direction R of the bracket 26 so that the load during crushing is mostly applied to the side surface in the rotation direction rather than the screw S1.
[0044]
The vertical blade 27 has a plate shape that is vertically fixed to the upper and lower rotating disks, and the vertical blade 27 has a vertical tip that is opposed to the fixed crushing blade 26 as shown in FIG. , Cutting edge. In the example of FIG. 2B, the vertical blade 27 is an end face with a flat tip. The vertical blade is preferably a flat surface in terms of strength.
[0045]
The vertical blade 27 is attached so that the interval G with respect to the fixed crushing blade 30 can be adjusted by making the attachment hole horizontally long. As another example of attachment, a horizontally long attachment hole can be formed on the outer peripheral side of the bracket 26, and a screw hole can be formed in the vertical blade 27. Both the bracket 26 and the vertical blade 27 may be provided with attachment holes, at least one of which is a horizontally long attachment hole, and the rotary crushing blade 27 may be attached to the bracket 26 with bolts and nuts.
[0046]
The auxiliary suction blades 23, the five rotary disks 25, and the main suction blades 21 are stacked in this order from the bottom on the large-diameter rod 20a below the vertical rotary shaft 20, and the auxiliary suction blades 23 and the five rotations are rotated. The board 25 is screwed to the corresponding screw portion of the vertical rotating shaft 20 with the inner screw of the sleeve portion 21a of the uppermost main suction blade 21, and is fastened and fixed toward the large diameter rod 20a.
[0047]
The fixed crushing blade 30 is composed of a serrated fixed blade that is attached to the rotary crushing vertical blade 27 so as to be replaceable by an external fixing screw S2 over the entire inner circumference of the bowl-shaped casing 10. Each serration is formed long in the vertical direction so as to face the rotary crushing vertical blade 27 of each rotary disk 25. The serrated fixed blade 30 can be blocked, and in particular, can be blocked in two vertically on the supply port side where the wear is severe and the discharge port side where the wear is relatively small. Making a block with serrations is more reasonable for fine grinding than when attaching elongated strips individually to the inner surface of the casing. Furthermore, the fixed crushing blade 30 can also be fixed by engaging dovetails with the peripheral wall of the vertical casing. This dovetail engagement method has an advantage that the fixed crushing blade 30 can be easily replaced.
[0048]
The interval G between the vertical crushing blade 27 of the rotary crushing blade and the fixed crushing blade 30 is attached to the turntable 25 so as to be relatively large on the supply port side and small on the discharge port side. In this structure, the workpiece W is pulverized from the supply port side in a stepwise manner so as not to receive a large load by pulverizing the workpiece W having a relatively large size from the beginning. As a result, the pulverization load can be equalized as a whole, and local wear on the supply side portion of the rotary pulverization vertical blade 27 and the fixed pulverization blade 30 can be prevented.
[0049]
In the pulverizer 1 having such a configuration, a workpiece having a size of about 30 to 50 mm is used and supplied to the supply port. The workpiece W is rotated by the vertical rotation shaft 20 as the vertical rotation shaft 20 rotates. From the supply port 20, the auxiliary rotary pulverizing vertical blade 23 and the main suction blade 21 attached to the outlet are sucked into the vertical casing 10 from the supply port 12 and then moved to the discharge port 12. In the process, centrifugal force is received along with the rotation of the turntable 25 and moved to the outer periphery. The large number of rotary pulverizing blades 27 and the fixed pulverizing blades 30 face each other in close proximity and relatively move at a high speed, so that the workpiece is efficiently pulverized. At that time, fine grinding is performed to a size of about 0.01 to 3.00 mm by adjusting the proximity gap G between the rotary grinding vertical blade 27 and the stationary grinding blade 30.
[0050]
Since the discharge port 12 is disposed at the upper end portion 11 and the supply port 14 is disposed at the lower end portion 13, the workpiece W is finely pulverized while moving from the bottom to the top. It is difficult to move and is subjected to a pulverization process at the lower part, pulverized into small fine particles, the fine particles move upward, and further, pulverization is repeated and conveyed to an air stream, and then discharged from the discharge port. In this way, the particle size is automatically adjusted by this pulverizer and the retention and pulverization in the crushing blade region due to the self-weight of the particles, and a fine powder with less coarse particles can be produced. it can.
[0051]
Contrary to the above embodiment, the supply port for the workpiece W can be provided at the upper end portion 11 of the casing, and the discharge port for the finely pulverized product w can be provided at the lower end portion of the casing.
[Brief description of the drawings]
FIG. 1 is a longitudinal sectional view of a pulverizer according to an embodiment of the present invention.
FIG. 2 shows a partial cross-sectional view (A) showing a fixed pulverization blade and a rotary pulverization blade used in the fine pulverizer of an embodiment of the present invention, and a modification (B) of the rotary pulverization blade.
FIG. 3 is a front view of a pulverizer according to an embodiment of the present invention.
FIG. 4 is a side view of a pulverizer according to an embodiment of the present invention.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Fine pulverizer 10 Vertical casing 11 Upper end part 12 Discharge port 13 Lower end part 14 Supply port 15 Cylindrical peripheral wall 20 Vertical rotating shaft 21 Main suction blade 23 Auxiliary suction blade 25 Rotary disk 27 Rotary grinding blade 30 Fixed grinding blade W Product w Finely pulverized product

Claims (5)

An upper end portion, a lower end portion, and a cylindrical peripheral wall are provided, and a supply port for supplying an object to be processed to either the upper end portion or the lower end portion and a discharge port for discharging finely pulverized material to the other are provided. A bowl-shaped casing;
A vertical rotation shaft rotatably supported by an upper end portion and a lower end portion inside the vertical casing;
A main suction blade of an object to be processed which is attached to the vertical rotation shaft and driven to rotate on the discharge port side inside the bowl-shaped casing;
A rotary crushing blade that is attached and rotated around a plurality of rotating discs that are vertically attached to the vertical rotary shaft in at least an intermediate portion inside the bowl-shaped casing;
In the fine pulverizer comprising the fixed pulverizing blade provided so that the rotary pulverizing blade is opposed to and close to the inner surface of the peripheral wall of the bowl-shaped casing ,
The rotary crushing blade includes a plurality of brackets that are inserted into kerfs formed radially at equal intervals in the outer periphery of the disk constituting the rotary disk and fixed vertically by welding, and a rotation direction side of the bracket. A fine pulverizer comprising a vertical blade that is replaceable by screw means including a bolt screwed into the surface from the rotation direction side and that can be adjusted with respect to the fixed pulverization blade. . The fine pulverizer according to claim 1, wherein a supply port is provided at a lower end portion of the vertical casing and a discharge port is provided at an upper end portion of the vertical casing. Vertical blade rotary grinding blade, over the outlet side from the supply port side, the mill according to claim 1, wherein the gap is fixed to a turntable of the bracket so that a stepwise reduced with respect to the fixed crushing blade. The fixed crushing blades are mounted on the inner surface of the peripheral wall of the bowl-shaped casing so that they can be exchanged via dovetail engaging means that restrain the movement in the circumferential direction and allow the vertical movement . The fine pulverizer according to claim 1 or 3, wherein the fine pulverizer has serrated fixed blades made of blocks . Upright casing has an openable access door sizes ranging of the plurality of the rotating disk in a peripheral wall thereof, claims 1 fixed crushing blade to the inner surface of the inspection door is mounted interchangeably 4 The fine pulverizer according to any one of the above.

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