JP5680044B2 - Powder processing equipment and powder processing equipment - Google Patents

Description

The present invention relates to a powder having a flaky shape, an indefinite (polygonal) shape or uneven surface, and a spheroidizing treatment for improving the sphericity and smoothness of the powder that is easily pulverized. The present invention relates to a powder processing apparatus and a powder processing facility for making a powder composite by attaching another powder (child powder) to the surface of the body.

Recently, in powders used as materials for electronic technology, materials for optical technology, polymer materials, and medical materials, improvement of powder shape, especially improvement of fluidity and filling properties by irregular spheres. Needs to make it high. Furthermore, there is an increasing need for improving the physical properties of powders, particularly by modifying the powder surface by combining two or more powders to improve functionality. Conventionally, in Patent Documents 1 and 2, as a powder processing apparatus and a powder processing equipment used for such a spheroidizing process and a composite process, a cylindrical rotor and an outer side of the rotor are disclosed. A main body provided with a stator inserted with a slight gap, a supply port provided at one end of the main body for supplying powder in a tangential direction of the rotor together with an air flow, and a second end of the main body. A powder processing apparatus is described that is provided with a discharge port that is provided, spheroidized, and further combined to discharge powder and airflow in the tangential direction of the rotor.

In this powder processing apparatus, a large number of protrusions parallel to the bus bar are continuously provided in the circumferential direction on the outer surface of the rotor and the inner surface of the stator. Then, by rotating the rotor, a large number of minute vortex flows are formed in the gaps formed between the respective projection materials, and irregularly shaped powders or two or more kinds of powders dispersed in the airflow are mutually exchanged. I try to make strong contact. As a result, in the powder processing apparatus, the powder is continuously spheroidized and further combined.

In addition, as the powder processing equipment, an air flow generating means for generating an air flow for supplying powder to the powder processing apparatus on the upstream side of the powder processing apparatus, and for heating and / or cooling the air flow A heat exchange means and a raw material feeder (including a raw material mixer) for dispersing the powder in the temperature-controlled airflow are disposed, and the powder processing device is disposed downstream of the powder processing device. Describes a collector that separates and collects processed (spheroidized and further compounded) powder from the airflow and a blower that flows the airflow in the powder processing facility. ing.

Japanese Examined Patent Publication No. 05-032094 (page 2, left column, lines 10 to 38, page 3, left column, lines 34 to right column, lines 21, FIGS. 1 and 3) Japanese Patent Publication No. 5-032095 (page 2, left column, line 27 to right column, line 9; page 3, left column, line 41 to right column, line 33, FIGS. 1 and 3)

However, in the conventional powder processing apparatus described in Patent Document 1, powder that can be easily plastically deformed at a temperature of about 60 ° C. or less (low melting point) can be spheroidized during the spheronization process. However, it has been impossible to spheroidize powder that requires 100 ° C. or higher for plastic deformation (high melting point) and powder that does not undergo plastic deformation such as graphite. Therefore, in order to enable the spheroidization process, it has been considered to increase the rotational speed of the rotor of the powder processing apparatus. However, if the rotational speed is increased, a strong eddy current is generated in the gap formed between the protrusions. There is a problem that the powder is easily pulverized and the diameter of the powder is easily reduced rather than the spherical shape of the powder.

Also in the powder processing apparatus described in Patent Document 2, when processing powder that is easily pulverized during the compounding process, the gap formed between the rotor and the stator can be widened. It was necessary to prevent the powder from being pulverized by setting the operating conditions at a reduced rotational speed. Here, when the number of rotations is lowered, there is a problem that the vortex formed in the gap becomes weak and the compounding action is lowered. This limits the range of rotation speed that can be used, and narrows the adjustment range of the compounding action itself. Further, in order to adjust the gap, it is necessary to change the inner diameter of the stator or the outer diameter of the rotor, which is an adjustment by replacing parts, and it is difficult to freely adjust the operating conditions.

In addition, when the axial groove of the stator of the conventional powder processing apparatus is eliminated and the cylinder is smooth, even if the rotation of the rotor is increased, the powder is not crushed and spheroidized and further combined. I found out. However, in this method, the progress of the spheroidizing process and further the compounding process is slow, and the powder is not sufficiently spheroidized and further combined by simply passing the powder once through the apparatus. There was a problem that it was necessary to pass many times and it was difficult to process a large amount of powder. Furthermore, in the conventional powder processing apparatus, it was found that when the air volume (flow rate) is reduced to about 1/3 of the normal, the spheroidizing process and the composite process proceed. However, if the air volume is lowered, the flow of powder becomes unstable and the processing temperature increases, and in powders that are weak against heat (powders with a low melting point), fusion of the powders occurs. However, there is a problem that the spheroidizing process and the composite process become impossible.

Therefore, in order to advance the powder processing by one spheroidization process and further the composite process, it is necessary to lengthen the time (the residence time) for the powder to pass through the apparatus without reducing the air volume. In the conventional apparatus, the total length of the stator and the rotor may be increased, but there are limitations due to problems such as mechanical strength, installation space, and cost due to an increase in the weight of the apparatus.

Therefore, the present invention was devised to solve such a problem, and its purpose is to spheroidize a large amount of powder at a time and further combine it without pulverizing the powder. In addition, a powder processing apparatus and a powder processing equipment that are not affected by the characteristics of the powder, that is, can be spheroidized from a powder that does not undergo plastic deformation, such as graphite, to a powder having a low melting point, and further combined. Is to provide.

In order to solve the above problems, a powder processing apparatus according to the present invention includes a cylindrical rotor that rotates at a high speed, and a cylinder that is arranged coaxially with the rotor so as to form a gap outside the rotor. A main body provided with a stator in a shape, a supply port that is provided at one end of the main body, supplies a processing raw material to the gap together with an air flow, is provided at the other end of the main body, and the processing raw material is In a powder processing apparatus provided with a discharge port for discharging a processed product spheroidized between a rotor and the stator from the gap, an inner peripheral surface of the stator is arranged with respect to an axis of the stator. a plurality of circumferential grooves powder or, the spiral grooves forming an angle of less than 60 degrees 90 degrees or more from the direction toward the downstream in the rotational direction of the rotor of the air flow with respect to the axis is made form, orthogonal Te It is configured as a processing device.

According to the above configuration, the processing raw material supplied together with the air flow from the supply port passes through the gap from the supply port toward the discharge port while being pressed against the stator by the swirling flow generated by the rotation of the rotor. To do. At this time, since the circumferential groove or the spiral groove is provided on the inner peripheral surface of the stator, the processing raw material is pressed against the groove bottom by centrifugal force due to the swirling flow. Then, since the processing raw material moves in the direction opposite to the centrifugal force in order to exit the groove, the processing raw material cannot easily exit the groove and stays in the groove for a long time. Further, it is not necessary to reduce the air volume (flow velocity of airflow) in order to lengthen the residence time. Therefore, the contact between the wall surface and the processing raw material, and the contact between the processing raw materials increases, the spheroidization processing of the processing raw material proceeds, the processing capacity is improved, and the heat generated by the spheronization processing can be cooled by the airflow, The temperature rise of the processing temperature is reduced. In addition, unlike the gap formed by the projection material parallel to the axis provided in the conventional powder processing apparatus, it is possible to suppress the generation of a strong vortex in the gap, and the processing raw material is prevented from being crushed. The Further, the processed material that has been spheroidized between the rotor and the stator is discharged together with the airflow from the gap to the discharge port.

Further, the powder processing apparatus according to the present invention is formed on the inner peripheral surface of the stator, the first groove forming region in which the plurality of circumferential grooves are formed, and the first groove forming region. And a powder processing apparatus provided with a second groove forming region in which inclined vertical grooves having an angle of more than 0 degree and not more than 45 degrees with respect to the axis are formed in the rotation direction of the rotor. Also good.

According to the above configuration, the processing raw material supplied together with the air flow from the supply port to the gap by the centrifugal force due to the swirling flow stays in the circumferential groove in the first groove forming region for a long time, and it is necessary to reduce the air volume. Disappears. Therefore, the spheroidizing process can be performed without increasing the processing temperature and suppressing the pulverization of the processing raw material, the spheroidizing process of the processing reduced raw material proceeds, and the processing capacity is improved. In addition, the spheroidized material is discharged from the discharge port together with the airflow.

In addition, the powder is dispersed by providing the stator with a second groove forming region in which a plurality of inclined vertical grooves are formed. For example, when the second groove forming region is provided on the supply port side of the stator, the processing raw material supplied to the gap is dispersed together with the air flow, and when provided in the intermediate portion, the processing aggregated in the gap. When the raw material or the processed product that has been spheroidized is dispersed and provided on the outlet side, the agglomerated processed product is dispersed. Therefore, the spheroidization process of the processing raw material is promoted.

In the powder processing apparatus according to the present invention, a plurality of vertical convex portions parallel to the axis of the rotor on the outer peripheral surface of the rotor, or 0 in the rotation direction of the rotor with respect to the axis. It may be configured as a powder processing apparatus in which a plurality of inclined convex portions having an angle of more than 45 degrees and 45 degrees or less are formed.
According to the said structure, the effect | action which makes a process raw material swirl within the groove | channel of a stator becomes strong with the vertical convex part or inclination convex part formed in the outer peripheral surface of a rotor, and a spheroidization process is further accelerated | stimulated. .

The powder processing apparatus according to the present invention rotates on the outer peripheral surface of the rotor from a plurality of vertical convex portions parallel to the axis of the rotor, or from the direction toward the downstream of the air flow with respect to the axis. A convex portion forming region in which a plurality of inclined convex portions having an angle of more than 0 degree and not more than 45 degrees in the rotation direction of the child is formed, and the convex portion forming region is formed continuously, and the minimum of the convex portion forming region It may be configured as a powder processing apparatus having an outer diameter larger than the outer diameter and not larger than the maximum outer diameter and provided with a smoothly formed cylindrical region.

According to the above configuration, the processing raw material does not press against the groove bottom of the stator, and the concave portion formed between the vertical convex portions or the inclined convex portions in the convex portion forming region of the rotor occurs. Even in this case, by providing the cylindrical region, it is possible to move the processing raw material that moves in the concave portion to the groove bottom of the stator and perform the spheroidizing process. Therefore, the spheroidization process of the processing raw material is further promoted.

The powder processing apparatus according to the present invention uses two or more processing raw materials as the processing raw material, and a processed product in which two or more processing raw materials are combined between the rotor and the stator. It can be configured as a powder processing apparatus that discharges from the gap to the discharge port.

According to the above-described configuration, the contact between the wall surface and the processing raw material and the contact between the processing raw materials increase, the processing raw material is compounded, the processing capacity is improved, and the heat generated by the compounding processing Can be cooled, and the temperature rise of the processing temperature is reduced. In addition, unlike the gap formed by the projection material parallel to the axis provided in the conventional powder processing apparatus, it is possible to suppress the generation of a strong vortex in the gap, and the processing raw material is prevented from being crushed. The Further, the processed product combined between the rotor and the stator is discharged from the gap to the discharge port together with the airflow.

The powder processing facility according to the present invention is arranged on the downstream side of the powder processing apparatus according to the present invention and the powder processing apparatus, and generates an air flow that is supplied to the supply port and discharged from the discharge port. An exhausting device that is disposed on the upstream side of the powder processing apparatus, and for supplying the processing raw material to the supply port together with an airflow formed on the upstream side of the powder processing apparatus, A raw material supply device that supplies airflow formed on the upstream side of the processing device, and is arranged on the upstream side of the exhausting device, and is made spherical by the powder processing device from the airflow discharged from the discharge port. A powder processing facility comprising a recovery device for recovering a processed product, wherein the powder processing facility includes a cooling device for cooling the temperature of the airflow supplied to the supply port on the upstream side of the powder processing device. It is composed.

According to the said structure, the supply amount of the processing raw material to a supply port is adjusted by providing a raw material supply apparatus. In addition, by providing a wind exhaust device, the flow velocity of the air flow supplied to the supply port together with the processing raw material, the flow velocity (air flow) of the air flow flowing through the gap of the powder processing device, and the spherical processed product from the discharge port. The flow rate of the discharged airflow is adjusted. Further, by providing the recovery device, the spheroidized processed material is efficiently recovered. Furthermore, by providing the cooling device, the temperature of the processing raw material supplied into the powder processing device is lowered, and the processing temperature during the spheroidization processing is lowered. Thereby, fusion of the processing raw material can be suppressed. As a result, the spheroidization processing of the processing raw material proceeds and the processing capacity is improved. This is particularly noticeable in processing raw materials having a low melting point.

The powder processing facility according to the present invention can be configured as a powder processing facility including a gas introduction duct branched from the discharge port, and a continuous open / close damper provided in the gas introduction duct.

According to the above configuration, the gas introduction duct is provided, and the continuous opening / closing damper is provided in the duct, so that the airflow flowing in the powder processing apparatus is faster when the damper is closed, and the airflow is slower when the damper is opened. Become. By continuously opening and closing the damper, the air flow in the powder processing device pulsates, and when the air flow increases, the processing raw material moves from the supply port side to the discharge port side when the air flow increases, and when the air flow becomes slow, the stator It stays in the circumferential groove or spiral groove. Therefore, by adjusting the opening / closing timing of the damper, it is possible to lengthen the residence time of the processing raw material, the spheronization process proceeds, and the processing capacity is improved. Further, since the processed product that has been spheroidized is discharged from the discharge port by a fast air flow at a constant speed, the processed product does not adhere to the discharge port.

The powder processing facility according to the present invention can be configured as a powder processing facility that connects the upstream of the continuous open / close damper between the cooling device and the raw material supply device.

According to the above configuration, the cooling device is provided upstream of the continuous open / close damper, and the cooled airflow is supplied into the discharge port via the gas introduction duct, and the spheroidized processed product can be cooled. Become. As a result, the treated product does not adhere to the discharge port.

A second powder processing facility according to the present invention includes a powder processing apparatus according to the present invention, a raw material supply apparatus that is disposed upstream of the powder processing apparatus and supplies a processing raw material to the supply port together with an air flow. An exhaust device that is disposed on the downstream side of the powder processing device, generates an airflow that is supplied to the supply port and is discharged from the exhaust port, and an exhaust device that is disposed on the upstream side of the exhaust device. A heating apparatus for heating the temperature of the airflow supplied to the supply port, the powder processing facility comprising: a recovery device that recovers the processed product spheroidized by the powder processing apparatus from the airflow discharged from the outlet Is configured as a powder processing facility provided on the upstream side of the powder processing apparatus.

According to the above configuration, as in the previous powder processing facility according to the present invention, the supply amount of the processing raw material and the flow rate of the airflow flowing through the powder processing facility are adjusted, and the spheroidized processed product is efficient. It is recovered well. Further, by providing the heating device, the temperature of the processing raw material supplied into the powder processing device is increased, and the temperature during the spheroidization processing is increased. Thereby, the spheroidizing treatment can be performed while the processing raw material is softened. As a result, the spheroidization processing of the processing raw material proceeds and the processing capacity is improved. This is particularly noticeable in processing raw materials having a high melting point. Even if the airflow supplied to the supply port is heated (heated up), the temperature during the spheronization process does not increase to a temperature at which the fusion of the processing raw material occurs.

The second powder processing facility according to the invention may be configured as a powder processing facility including a gas introduction duct branched from the discharge port, and a continuous open / close damper provided in the gas introduction duct.

According to the above-described configuration, as with the previous powder processing equipment according to the present invention, by providing a continuous opening / closing damper and adjusting the opening / closing timing, it becomes possible to lengthen the residence time of the processing raw material and make it spherical. Processing progresses and processing capacity improves. Further, since the processed product that has been spheroidized is discharged from the discharge port by a fast air flow at a constant speed, the processed product does not adhere to the discharge port.

The second powder processing facility according to the present invention can be configured as a powder processing facility including a cooling device upstream of the continuous open / close damper.

According to the above configuration, by providing the cooling device upstream of the continuous open / close damper, the cooled airflow is supplied into the discharge port via the gas introduction duct, and the spheroidized processed product can be cooled. Become. As a result, the treated product does not adhere to the discharge port.

In the powder processing facility according to the present invention, two or more kinds of processing raw materials are used as the processing raw materials, and a plurality of raw material supply devices for supplying two or more kinds of processing raw materials are provided upstream of the powder processing apparatus. In addition, it can be configured as a powder processing facility in which a processed product combined by the powder processing apparatus is recovered by the recovery apparatus.

According to the above-described configuration, the two or more kinds of processing raw materials supplied from the plurality of raw material supply apparatuses to the individually controlled temperature airflow and supplied into the powder processing apparatus together with the temperature-controlled airflow are: A processing raw material to be a child powder (a powder having a small particle size) adheres to the surface of the processing raw material that is mixed in a gap on the supply port side of the processing apparatus and becomes a mother powder (a powder having a large particle size). And both processing raw materials are compounded as it approaches the gap on the discharge port side.

Still another powder processing facility according to the present invention is a powder according to the present invention in which a processed product in which two or more processing raw materials are combined between a rotor and a stator is discharged to a discharge port. Arranged on the upstream side of the powder processing apparatus, a processing apparatus, an exhaust apparatus that is disposed on the downstream side of the powder processing apparatus, generates an air flow that is supplied to the supply port and discharged from the discharge port In order to supply two or more kinds of processing raw materials to the supply port together with the air flow formed on the upstream side of the powder processing apparatus, the processing raw material is supplied to the air flow formed on the upstream side of the powder processing apparatus. A plurality of raw material supply devices, and a recovery device that is disposed on the upstream side of the exhaust device and recovers the processed product combined by the powder processing device from the air flow discharged from the discharge port. It is configured as a powder processing facility.

According to the above configuration, two or more kinds of processing raw materials supplied individually from the plurality of raw material supply devices into the powder processing device are mixed in the gap on the supply port side of the powder processing device, and the mother powder (particles) A processing raw material that becomes a child powder (a powder having a small particle size) adheres to the surface of the processing raw material that becomes a powder having a large diameter. And both processing raw materials are compounded as it approaches the gap on the discharge port side.

The powder processing facility according to the present invention is configured as a powder processing facility provided with a raw material mixing device for further mixing the two or more types of processing raw materials on the downstream side of the raw material supply device.

According to the above configuration, two or more kinds of processing raw materials are mixed by the raw material mixing apparatus, and the sub-powder powder (small particle size powder) is formed on the surface of the processing raw material that becomes the mother powder (powder having a large particle size). The mixed processing raw material to which the processing raw material to be attached is generated. Unlike the powder processing equipment according to claim 12, the mixed processing raw material is supplied to the powder processing apparatus (gap), whereby the processing raw material adheres in the gap on the supply port side. The processing raw materials are combined in the entire region of the gap. Therefore, the composite processing time becomes long, and a stronger composite state is achieved.

The powder processing facility according to the present invention uses two or more kinds of pre-mixed processing raw materials as the processing raw material, and one raw material supply device for supplying the pre-mixed processing raw material is the powder processing apparatus. Can be configured as a powder processing facility in which a processed product combined by the powder processing apparatus is recovered by the recovery apparatus.

According to the above configuration, two or more kinds of processing raw materials mixed in advance by one raw material supply device are supplied to the powder processing device (gap) together with the temperature-adjusted airflow, and discharged from the supply port side. The processing raw material is combined in the entire region of the gap on the outlet side. Therefore, the composite processing time becomes long, and a stronger composite state is achieved.

Another powder processing facility according to the present invention is a powder according to the present invention in which a processed product in which two or more processing raw materials are combined between a rotor and a stator is discharged to a discharge port. Arranged on the upstream side of the powder processing apparatus, a processing apparatus, an exhaust apparatus that is disposed on the downstream side of the powder processing apparatus, generates an air flow that is supplied to the supply port and discharged from the discharge port In order to supply two or more kinds of pre-mixed processing raw materials to the supply port together with the airflow formed on the upstream side of the powder processing device, the processing raw materials are formed on the upstream side of the powder processing device. One raw material supply device that supplies the airflow to be generated and the upstream side of the exhaust device, and collects the processed product combined by the powder processing device from the airflow discharged from the discharge port It is configured as a powder processing facility equipped with a recovery device.

According to the above configuration, two or more kinds of processing raw materials mixed in advance are supplied to the powder processing apparatus (gap) together with the air flow by one raw material supply apparatus, so that the gap between the supply port side and the discharge port side is reduced. Process raw materials are combined in all areas. Therefore, the composite processing time becomes long, and a stronger composite state is achieved.

According to the powder processing apparatus of the present invention, the first groove is formed by forming a circumferential groove or a spiral groove on the outer peripheral surface of the stator, or by forming a circumferential groove or a spiral groove on the outer peripheral surface of the stator. By providing the formation region and the second groove formation region in which the vertical groove or the inclined vertical groove is formed, the generation of the vortex flow in the gap (in the groove) is suppressed and the swirl flow is generated. As a result, the residence time becomes longer and the rise in the processing temperature can be suppressed. As a result, a large amount of powder can be processed at one time without being pulverized, and it is not affected by the properties of the powder, that is, a powder that does not undergo plastic deformation such as graphite and has a low melting point. The spheroidizing process and further the compounding process can be performed.

Further, according to the powder processing apparatus, by forming the vertical convex portion or the inclined convex portion on the outer peripheral surface of the rotor, the convex portion forming region and the cylindrical region formed with the vertical convex portion or the inclined convex portion, By providing the spheroidizing treatment time and the composite treatment time are shortened, and the particle size of the spheroidization treatment and the composite treatment product is made uniform.

According to the powder processing facility according to the present invention, a cooling device or a heating device is provided on the upstream side of the powder processing device, and a plurality of raw material supply devices (including a raw material mixing device) or pre-mixed. By providing one raw material supply device for supplying the processed raw material, a large amount of powder can be processed at one time without being pulverized, and it is not affected by the characteristics of the powder. From such powder that does not undergo plastic deformation to powder with a low melting point, spheronization processing and further composite processing can be performed.

In addition, according to the powder processing facility, a gas introduction duct branched from the discharge port is provided, and a continuous open / close damper is provided in the duct, and the upstream of the continuous open / close damper is disposed between the cooling device and the raw material supply device. By connecting, further, by providing a cooling device upstream of the continuous open / close damper, the spheroidization processing time and the composite processing time can be shortened, and the spheronization processing and the composite processing product The particle size becomes uniform.

(A) is sectional drawing which shows the structure of the powder processing apparatus which concerns on this invention, (b) is a principal part expanded sectional view which shows the cross-sectional shape of a rotor and a stator. (A)-(d) is sectional drawing which shows the internal peripheral surface of a stator. (A), (b) is a principal part expanded sectional view which shows the cross-sectional shape of the circumferential groove | channel or helical groove | channel formed in the stator. (A)-(c) is a front view which shows the outer peripheral surface of another rotor, (d) is a principal part expanded sectional view of (c). (A), (b) is a principal part expanded sectional view which shows the cross-sectional shape of the vertical convex part or inclination convex part formed in the rotor. It is a principal part expanded sectional view which shows the cross-sectional shape of another vertical convex part or an inclination convex part. It is a schematic diagram which shows the structure of the powder processing equipment (for spheroidization processing) which concerns on this invention. It is a schematic diagram which shows the structure of the other powder processing equipment (for spheroidization processing) which concerns on this invention. It is a schematic diagram which shows the structure of the other powder processing equipment (for spheroidization processing) which concerns on this invention. It is a schematic diagram which shows the structure of the other powder processing equipment (for spheroidization processing) which concerns on this invention. It is a schematic diagram which shows the structure of the powder processing equipment (for compound processing) which concerns on this invention. It is a schematic diagram which shows the structure of the other powder processing equipment (for composite processing) which concerns on this invention.

DESCRIPTION OF EMBODIMENTS Embodiments of a powder processing apparatus and powder processing equipment according to the present invention will be described in detail with reference to the drawings. In the present invention, the powder refers to a powder having an average particle size of several hundred μm or less, typified by toner, graphite, nylon, titanium oxide, etc., regardless of organic or inorganic type. The powder treatment is to spheroidize irregular-shaped powder (for example, powder having an average particle diameter of 5 to 50 μm), or to powder (base powder: for example, average particle diameter). Is adhered to the surface of the powder of 5 to 50 μm, preferably other powder (child powder: preferably 1/10 or less, more preferably 1/100 of the average particle diameter of the mother powder). This means that the powders are combined, that is, two or more powders having different functions are combined. In the compounding process, the compounded powder is spheroidized at the same time.

1A is a cross-sectional view showing a configuration of a powder processing apparatus, FIG. 1B is an enlarged cross-sectional view of a main part showing cross-sectional shapes of a rotor and a stator, and FIGS. 2A to 2D are views of a stator. 3A and 3B are main part enlarged cross-sectional views showing a cross-sectional shape of a circumferential groove or a spiral groove formed in the stator, and FIGS. 4A to 4C. Is a front view showing the outer peripheral surface of another rotor, (d) is an enlarged cross-sectional view of the main part of (c), and FIGS. 5 (a) and 5 (b) are vertical convex portions or inclined convex portions formed on the rotor. FIG. 6 is an enlarged cross-sectional view of the main part showing the cross-sectional shape of another vertical convex part or inclined convex part, and FIGS. 7 to 12 are schematic views showing the configuration of the powder processing equipment. It is.

In the embodiment of the powder processing apparatus and the powder processing facility according to the present invention, the drawings provided such that the axes of the rotor and the stator of the main body are vertical are described. The present invention is not limited to these illustrated examples. That is, the axes of the rotor and the stator in the present invention may be provided at an angle other than vertical, for example, horizontally.

<Powder processing equipment>
In the present invention, a powder processing apparatus having the same configuration is used in both the spheroidizing process and the compounding process. First, a first embodiment of the powder processing apparatus will be described.
In the powder processing apparatus according to the first embodiment, as shown in FIG. 1A, the powder processing apparatus 1 includes a main body 4 including a rotor 2 a and a stator 3 a, and one end of the main body 4. A supply port 6 provided and a discharge port 7 provided at the other end of the main body 4 are provided. Each configuration will be described below.

(1) The main body part The main body part 4 includes a rotor 2a and a stator 3a arranged coaxially with the rotor 2a so as to form a gap 5 outside the rotor 2a. Here, as shown in FIG. 1B, the gap 5 is formed between the outermost circumferential surface of the rotor 2a and the innermost circumferential surface of the stator 3a, that is, a circumferential groove 14a described later formed on the stator 3a. It is distance S with the peak surface of the peak part formed in this, Comprising: 0.5-5 mm is preferable. In addition, as will be described later, when the vertical convex portion 16a or the inclined convex portion 16b (see FIGS. 4A, 4B, and 5A) is formed on the outer peripheral surface of the rotor, the rotation is performed. The outermost peripheral surface of the child is the apex surface of each convex portion. As will be described later, when the spiral groove 14b, the vertical groove 15a, or the inclined vertical groove 15b (see FIGS. 2B to 2D) is formed on the inner peripheral surface of the stator, The innermost peripheral surface becomes the apex surface of the crest formed between the grooves. When the distance S is less than 0.5 mm, the contact between the processing raw materials in the gap 5 and the contact between the processing raw material and the outermost peripheral surface (rotor 2a) or the innermost peripheral surface (stator 3a) become significant. The seizure phenomenon is likely to occur on the outermost peripheral surface or the innermost peripheral surface. In addition, when the distance S exceeds 5 mm, it is difficult for a swirling flow to be generated in the gap 5, and it becomes difficult for the spheroidizing process and the composite process to proceed.

(First rotor)
The rotor 2 a has a rotation shaft 9, and the rotation shaft 9 is supported by a bearing 12 b provided on the top plate 11 and a bearing 12 a provided on the base 10, so that the rotor 2 a is perpendicular to the base 10. It has been placed. A V pulley 13 driven by a driving device (not shown) is attached to the lower end portion of the rotating shaft 9. By driving the driving device, the rotor 2a rotates around the rotation shaft 9 at a high speed, for example, a normal peripheral speed of 100 to 130 m / s and a maximum peripheral speed of 170 m / s. Moreover, the rotor 2a is a cylindrical body made of a metal or the like in a cylindrical shape, and the outer peripheral surface thereof is preferably subjected to an abrasion resistance treatment by thermal spraying such as hard chrome plating or super steel.

(First stator)
As described above, the stator 3a is arranged coaxially with the rotor 2a so as to form the gap 5 outside the rotor 2a, and is a cylindrical body made of metal or the like in a cylindrical shape, It is preferable that the inner peripheral surface is subjected to wear resistance treatment by thermal spraying such as hard chrome plating or super steel. The stator 3a may be either a liner type or an integral type. The stator 3a more preferably includes a cooling jacket 8.

As shown in FIG. 2A, a circumferential groove 14a perpendicular to the axis of the stator 3a is formed in multiple stages on the inner circumferential surface of the stator 3a. In addition, as shown in FIG. 2B, the stator 3a has a helical groove 14b that forms an angle θ1 of 60 degrees or more and less than 90 degrees in the rotation direction of the rotor from the direction toward the downstream of the air flow with respect to the axis. May be formed. Moreover, although a spiral groove is not illustrated, a plurality of spiral grooves may be used.

Here, when the angle θ1 of the spiral groove 14b is 90 degrees, the circumferential groove 14a, and when the angle θ1 is less than 60 degrees, no swirling flow is generated in the groove, The residence time cannot be increased, and the spheroidizing process and the compounding process do not proceed. Further, the turning direction from the lower end to the upper end of the stator 3a of the spiral groove 14b may be either the same direction as the rotation direction of the rotor 2a or a different direction, but the same direction in which a swirling flow is easily generated in the groove. Is preferred.

The groove shape of the circumferential groove 14a or the spiral groove 14b can be a square (trapezoid) as shown in FIG. 3A, a triangle (see the groove 14c) as shown in FIG. It is preferable that The dimensions of the groove shape are as follows: the groove width W2 is 5 to 50 mm, the groove depth D1 is 3 to 20 mm, the groove side face angle is 45 to 90 degrees on the upstream groove angle θ3, and the downstream groove angle θ4 is 90 degrees. -150 degrees is preferred. Further, the peak width W1 of the peaks formed between the grooves is preferably 0 to 50 mm, and more preferably 2 to 50 mm in consideration of wear. Furthermore, the angles r1 and r2 between the groove bottom and the groove side surface are preferably 0 to 10 mm, and the angles R1 and R2 between the peak and the groove side surface are preferably 0 to 10 mm. In addition, when the groove width W2 and the groove depth D1 are less than the lower limit values, eddy currents are easily generated, and the processing raw material is easily crushed. When the groove width W2, the groove depth D1, the peak width W1, the angles r1, r2, R1, R2 exceed the upper limit values, or the groove angles θ3, θ4 are outside the predetermined range, the swirling flow becomes difficult to occur. The residence time of the processing raw material in the groove tends to be short.

(Supply port, discharge port)
As shown in FIG. 1 (a), the supply port 6 is provided at one end (lower end) of the main body 4, and supplies the processing raw material to the gap 5 formed between the rotor 2a and the stator 3a together with the air flow. Is to do. The discharge port 7 is provided at the other end (upper end) of the main body 4, and is used to discharge the processed product that is spheroidized and combined between the rotor 2 a and the stator 3 a from the gap 5. is there. And in order to make supply of a processing raw material and discharge | emission of a processed material easy, it is preferable that both the supply port 6 and the discharge port 7 are provided in the tangent direction of the rotor 2a. In the drawing, the supply port 6 and the discharge port 7 are arranged in a direction that makes an angle of 180 degrees with each other, but in the direction that makes the same direction (angle 0 degree) or another angle (for example, 90 degrees). It may be arranged. Moreover, you may provide the supply port 6 in the other end (upper end) of the main-body part 4, and the discharge port 7 in one end (lower end).

Next, a second embodiment of the powder processing apparatus will be described.
In the powder device (not shown) of the second embodiment, a stator 3b shown in FIGS. 2 (c) and 2 (d) is used instead of the stator 3a constituting the powder processing device of the first embodiment. Is used. Since other configurations are the same as those of the first embodiment, description thereof is omitted.

(Second stator)
Like the stator 3a (see FIGS. 2A and 2B), the stator 3b is a cylindrical body made of metal or the like in a cylindrical shape, and has a first groove forming region A on its inner peripheral surface. And a second groove forming region B formed continuously with the first groove forming region A is provided. The first groove forming region A is a region having a function of spheroidizing and further compounding the processing raw material, and the second groove forming region B disperses the processing raw material or the spheroidizing treatment and the composite processed material. This is a region having an action. The second groove forming region B may be provided at any position on the upper end side (the discharge port 7 side in FIG. 1), the intermediate portion, and the lower end portion (the supply port 6 side in FIG. 1) of the stator 3b. A plurality of first groove forming regions A and second groove forming regions B may be provided. The ratio (B / A) of the length in the axial direction of the second groove forming region B to the first groove forming region A is 1/5 in consideration of the spheroidizing action (compositing action) and the dispersing action. ~ 1/2 is preferred. Here, the length is the total length of each region. Furthermore, it is preferable that the inner peripheral surface of the stator 3b is subjected to wear resistance treatment.

(First groove forming region)
The first groove forming area A is formed on the inner circumferential surface of the stator 3b, the circumferential groove 14a orthogonal to the axis of the stator 3b, or the rotation of the rotor from the direction toward the downstream of the air flow with respect to the axis. This is a region in which a spiral groove 14b (not shown) having an angle of 60 degrees or more and less than 90 degrees is formed. Since the circumferential groove 14a and the spiral groove 14b are the same as those in the first embodiment (first stator 3a), description thereof is omitted.

(Second groove forming region)
The second groove forming region B is formed on the inner peripheral surface of the stator 3b on the longitudinal groove 15a parallel to the axis of the stator 3b, or the direction of rotation of the rotor from the direction toward the downstream of the air flow with respect to the axis. In this region, the inclined vertical groove 15b having an angle θ2 of more than 0 degree and not more than 45 degrees is formed. When the angle θ2 of the inclined vertical groove 15b is 0 degrees, the vertical groove 15a is present, and when the angle θ2 exceeds 45 degrees, the dispersing action of the processing raw material or the processed material by the inclined vertical groove 15b is lost. Further, the inclination direction from the lower end to the upper end of the stator 3b of the inclined vertical groove 15b may be either the front side or the rear side in the rotation direction of the rotor 2a, but as shown in FIG. It is preferable that the processing raw material is easily supplied into the groove, or the rearward inclination in which the processed material is easily discharged from the groove is preferable.

The groove shapes of the vertical grooves 15a and the inclined vertical grooves 15b are preferably square (trapezoidal) or U-shaped (see the recess 19a in FIG. 5A and the recess 19c in FIG. 6B). The dimensions of the groove shape are preferably not shown, but the groove depth is preferably 5 to 15 mm, the peak width between the peaks formed between the grooves is 2 to 10 mm, and the peak pitch is 5 to 50 mm. When the groove depth, peak width, or peak pitch is less than the lower limit value, the pulverizing action becomes strong, and when the groove depth, peak width or peak pitch exceeds the upper limit value, the dispersing action tends to decrease.

Next, a preferred embodiment of the powder processing apparatus will be described.
A preferred powder processing apparatus (not shown) has a rotor 2b shown in FIGS. 4A and 4B instead of the rotor 2a constituting the powder processing apparatus of the first and second embodiments. It is what was used. Since other configurations are the same as those of the first and second embodiments, description thereof is omitted.

(Second rotor)
Like the rotor 2a (see FIG. 1), the rotor 2b is a cylindrical body made of metal or the like in the shape of a cylinder, and has a longitudinal protrusion parallel to the axis of the rotor 2b on the outer peripheral surface thereof. An inclined convex portion 16b having an angle θ5 of more than 0 degree and not more than 45 degrees in the rotation direction of the rotor from the direction toward the downstream of the air flow with respect to the axis line 16a is formed. When the angle θ5 of the inclined convex portion 16b is 0 degrees, the vertical convex portion 16a is used. When the angle θ5 exceeds 45 degrees, the effect of improving the swirling flow by the inclined convex portion 16b is reduced. Further, the inclination direction from the lower end to the upper end of the rotor 2b of the inclined convex portion 16b may be either the front side or the rear side in the rotation direction of the rotor 2b, but as shown in FIG. The rear side where the swirl flow is easy to improve is preferable.

The concave shape formed between the convex portions of the vertical convex portion 16a or the inclined convex portion 16b is a square (trapezoid) (see the concave portion 19a in FIG. 5A), a triangle (see the concave portion 19b in FIG. 6A) or It is preferably U-shaped (see the concave portion 19c in FIG. 6B), and the bottom surface of the concave portion is formed by an arc or a plane parallel to the outer peripheral surface of the rotor 2b. Further, the rotor 2b may be one in which a blade 16c (see FIG. 6C) is embedded in the outer surface of the rotor instead of the vertical convex portion 16a or the inclined convex portion 16b.

As shown in FIG. 5A, the dimensions of the convex shape of the vertical convex portion 16a or the inclined convex portion 16b are as follows: the convex height D2 is 5 to 15 mm, the convex vertex width W3 is 0 to 10 mm, and the vertex pitch P. Is preferably 5 to 100 mm, and the angle r3 of the bottom surface of the convex portion is preferably 0 <r3 <2D2. When the convex portion height D2 and the apex pitch P are less than the lower limit values, the vortex flow in the concave portion 19a becomes strong, the force for pressing the processing raw material against the groove bottom of the stator is reduced, and the residence time of the processing raw material in the groove Tends to be short. When the convex height D2, convex vertex width W3, vertex pitch P, and angle r3 exceed the upper limit values, it becomes difficult for the swirling flow to occur, and the residence time of the processing raw material in the groove tends to be short. The vertex pitch P is more preferably 20 to 60 mm.

As shown in FIG.5 (b), the vertical convex part 16a or the inclination convex part 16b may be the shape inclined in the rotation direction front side or back side of the rotor 2b. The inclination angle θ6 of the convex side surface 17 on the front side is preferably −5 to 45 degrees, and the inclination angle θ7 of the convex side surface 18 on the rear side is preferably −45 to 45 degrees. Here, the inclination angle θ6 is formed by a straight line connecting the extension line of the convex portion side surface 17 and the rotation center of the rotor 2b and the front angle of the convex portion vertex surface. It is formed by a straight line connecting the extension line of the part side surface 18 and the center of rotation of the rotor 2b and the corner on the rear side of the convex vertex surface.

Further, in another preferred embodiment of the powder processing apparatus (not shown), instead of the rotor 2a constituting the powder processing apparatus of the first and second embodiments described above, FIGS. The rotor 2c shown in FIG. Since other configurations are the same as those of the first and second embodiments, description thereof is omitted.

(Third rotor)
The rotor 2c is a cylindrical body made of metal or the like in the same manner as the rotor 2a (see FIG. 1), and has a convex portion forming region C and a convex portion forming region C on the outer peripheral surface thereof. And a cylindrical region D formed continuously. In addition, you may provide the convex part formation area | region C and the cylindrical area | region D in the multiple places of the outer peripheral surface of the rotor 2c. Moreover, it is preferable that the outer peripheral surface of the rotor 2c is subjected to wear resistance treatment. Further, the rotor 2c is formed by processing both the convex portion forming region C and the cylindrical region D on the outer peripheral surface of one cylindrical body, or the cylindrical member having the convex portion forming region C provided on the outer peripheral surface. Any of those obtained by integrally joining a cylindrical body provided with a cylindrical region D on the outer peripheral surface may be used.

The convex portion forming region C is a region having an action of spheroidizing and further combining the processing raw material. In addition, the cylindrical region D is formed by processing raw material that moves in the concave portions formed between the vertical convex portions 16a or the inclined convex portions 16b (not shown), and the circumferential grooves 14a or spirals of the stators 3a and 3b shown in FIG. This is a region having the action of moving to the groove bottom of the groove 14b to spheroidize and further combine. The length of each cylindrical region D is preferably 50 mm or less. Further, the total length of the cylindrical region D is preferably 20% or less with respect to the total length of the convex portion forming region C. When the length of each cylindrical region D exceeds 50 mm, or the total length of the cylindrical regions D exceeds 20%, the area of the convex portion forming region C that is strongly involved in the spheroidization processing of the processing raw material and further the composite processing Becomes small, and it becomes difficult for the processing raw material to be spheroidized and further combined.

(Projection formation area)
The convex portion forming region C is formed on the outer peripheral surface of the rotor 2c on the longitudinal convex portion 16a parallel to the axis of the rotor 2c, or in the direction of rotation of the rotor from the direction toward the downstream of the air flow with respect to the axis. This is a region where inclined convex portions 16b (not shown) having an angle of more than 0 degree and not more than 45 degrees are formed. About the vertical convex part 16a or the inclination convex part 16b, since it is the same as that of the 2nd rotor 2b, description is abbreviate | omitted.

(Cylindrical region)
The cylindrical region D is a smoothly formed region formed continuously from the convex portion forming region C and having an outer diameter that is larger than the minimum outer diameter of the convex portion forming region C and equal to or smaller than the maximum outer diameter. Here, when the outer diameter of the cylindrical region D is smaller than the minimum outer diameter of the convex portion forming region C (the outer diameter at the bottom of the concave portion 19a in FIG. 5A), the processing raw material in the concave portion 19a is treated as a stator. The action of moving to 3a, 3b is lost. Further, when the outer diameter of the cylindrical region D exceeds the maximum outer diameter of the convex portion forming region C (the outer diameter at the position of the vertex surface of the vertical convex portion 16a or the inclined convex portion 16b in FIG. 5A), This tends to hinder the movement of the processing raw material in the recess 19a to the stators 3a and 3b.

<Powder processing equipment>
Next, the powder processing facility will be described. First, a first embodiment of a powder processing facility (for spheronization processing) used for powder spheronization processing will be described.
As shown in FIG. 7, the powder processing facility (for spheroidizing processing) 20 a uses the powder processing apparatus 1 described in FIGS. 1 to 6 and is upstream of the powder processing apparatus 1. The raw material supply device 21 that supplies the processing raw material together with the air flow to the powder processing device 1 (supply port 6 in FIG. 1) via the supply duct 29, and the downstream side of the powder processing device 1, By sucking air through the discharge duct 30, an air flow that is supplied to the powder processing apparatus 1 (supply port 6) and discharged from the powder processing apparatus 1 (discharge port 7 in FIG. 1) is generated. A wind exhaust device 22 and a recovery unit disposed on the upstream side of the air exhaust device 22 and recovering a spheroidized product by the powder processing device 1 from an air flow discharged from the powder processing device 1 (discharge port 7). And an air flow that is supplied to the powder processing apparatus 1 (supply port 6). A cooling device 24 for cooling the temperature on the upstream side of the powder processing apparatus 1.

The raw material supply device 21 uses a conventionally known supply device such as a screw type or a table type, and the type thereof is not limited. As the recovery device 23, a conventionally known recovery device such as a cyclone 23a and a bag filter 23b is used. Although the cyclone 23a and the bag filter 23b are used in combination in FIG. 7, only the bag filter 23b may be used.

The cooling device 24 preferably uses a conventionally known cooler or the like, and performs not only airflow cooling but also dehumidification. The cooling temperature is appropriately set depending on the processing raw material. For example, in the case of toner, the airflow is cooled to 0 to 5 ° C. In FIG. 7, the cooling device 24 is provided on the upstream side of the raw material supply device 21, but may be provided on the downstream side of the raw material supply device 21. The powder processing facility (for spheroidizing treatment) 20a includes the cooling device 24, so that the spheroidizing processing capacity (processing amount) of the processing raw material is improved, and particularly when the processing raw material is a low melting point raw material, or This is remarkable when the supply amount of the processing raw material is large.

As shown in FIG. 8, the powder processing facility (for spheroidizing treatment) 20 a includes a gas introduction duct 25 branched from the powder processing apparatus 1 (discharge port 7), and a continuous open / close damper 26 is provided in the gas introduction duct 25. Is preferably provided.
The gas introduced into the gas introduction duct 25 is outside air, and an inert gas such as nitrogen may be used. As the continuous opening / closing damper 26, a conventionally known damper such as a rotary type, a butterfly type or a gate type is used. By using this continuous opening / closing damper 26, the velocity (flow rate) of the air flow in the powder processing apparatus 1 is adjusted, the residence time of the processing raw material in the powder processing apparatus 1 can be lengthened, and the spheroidizing processing capability Will improve. Further, since the processed material is discharged from the powder processing apparatus 1 (discharge port 7) by a fast air flow at a constant speed, the processed material adheres to the discharge port 7 and adversely affects the recovery device 23 disposed downstream. It is easy to prevent. Note that a fixed damper 31 may be provided on the upstream side of the raw material supply device 21 to adjust the flow rate balance between the outside air side and the powder processing device 1 side.

As shown in FIG. 9, the upstream of the continuous opening / closing damper 26 is preferably connected between the cooling device 24 and the raw material supply device 21. Thereby, the spheroidized processed material can be cooled, and adhesion of the processed material in the powder processing apparatus 1 (discharge port 7) can be prevented.

Next, a second embodiment of the powder processing facility (for spheroidization processing) will be described.
As shown in FIG. 10, the powder processing facility (for spheroidizing treatment) 20b is replaced with the cooling device 24 of the powder processing facility (for spheroidizing processing) 20a (see FIG. 8) of the first embodiment. The heating device 27 is provided. The other configuration is the same as that of the powder processing facility (for spheroidizing treatment) 20a of the first embodiment, and thus the description of the other configuration is omitted.

The heating device 27 uses a conventionally known heater or the like, and the heating temperature is appropriately set depending on the processing raw material. In FIG. 10, the heating device 27 is provided on the upstream side of the raw material supply device 21, but may be provided on the downstream side of the raw material supply device 21. The powder processing facility (for spheroidizing treatment) 20b includes the heating device 27, whereby the spheroidizing ability of the processing raw material is improved. In particular, the processing raw material is a high-melting-point raw material resistant to heat, and is spherical at a high temperature. This is conspicuous when the digitization process proceeds.

The powder processing facility (for spheroidizing treatment) 20b is provided with a gas introduction duct 25 as in the case of the powder processing facility (for spheroidizing treatment) 20a, and a continuous open / close damper 26 is provided in the gas introduction duct 25. preferable. Further, it is preferable to provide a cooling device 28 upstream of the continuous opening / closing damper 26. By providing this cooling device 28, the processed product that has been heated to a spherical shape can be cooled, and adhesion of the processed product in the powder processing apparatus 1 (discharge port 7) can be prevented.
Note that the powder processing facilities (for spheroidizing treatment) 20a and 20b may not necessarily include the cooling devices 24 and 28 and the heating device 27 depending on the characteristics of the processing raw materials.

Next, FIG. 11 shows a first embodiment of a powder processing facility (for composite processing) used for powder composite processing. As shown in FIG. 11, the powder processing facility (for composite processing) 20 c uses the powder processing apparatus 1 described in FIGS. 1 to 6, and is a raw material supply apparatus 21 (see FIG. 7). As the powder processing equipment (for spheroidizing treatment) 20a shown in FIG. 7 except that the first raw material supply device 21a and the second raw material supply device 21b for supplying two kinds of processing raw materials individually are used. Is provided. With such a configuration, the composite processing capacity (processing amount) of the processing raw material is improved, and is particularly remarkable when the processing raw material is a low melting point raw material or when the processing raw material is supplied in a large amount.

And the 1st raw material supply apparatus 21a and the 2nd raw material supply apparatus 21b use the apparatus similar to the raw material supply apparatus 21 of the powder processing equipment (for spheroidization processing) 20a, and about other structures, it is a powder processing. Since it is the same as the equipment (for spheroidization processing) 20a, the description is omitted.

Next, FIG. 12 shows a second embodiment of the powder processing facility (for composite processing). As shown in FIG. 12, the powder processing facility (for composite processing) 20d includes a first raw material supply device 21a and a second raw material supply device 21b of the powder processing facility (for composite processing) 20c (see FIG. 11). The raw material mixing device 21c is provided on the downstream side of the two, and after mixing two kinds of processing raw materials in advance, the mixed processing raw material is supplied to the powder processing device 1. Moreover, in order to adjust the supply amount of the mixed process raw material, you may provide the 3rd raw material supply apparatus 21d in the downstream of the raw material mixing apparatus 21c. With such a configuration, the combined processing capacity (processing amount) of the processing raw material is further improved.

And the 1st-3rd raw material supply apparatus 21a, 21b, 21d uses the apparatus similar to the raw material supply apparatus 21 of the powder processing equipment (for spheroidizing process) 20a, and the raw material mixing apparatus 21c is a conventionally well-known mixing apparatus. Is used. Other configurations are the same as those of the powder processing facility (for composite processing) 20c, and thus the description thereof is omitted.

Further, although not shown, the powder processing facilities (for composite processing) 20c and 20d preferably include a gas introduction duct 25 branched from the powder processing apparatus 1 and a continuous opening / closing damper 26 (see FIG. 8). Moreover, it is preferable to connect the upstream of the continuous opening / closing damper 26 between the cooling device 24 and the first raw material supply device 21a or the third raw material supply device 21d. With such a configuration, the composite processing capability of the processing raw material is further improved, and the adhesion of the processed material in the powder processing apparatus 1 and the adverse effect on the recovery apparatus 23 arranged downstream are prevented. Furthermore, although the cooling device 24 is provided on the upstream side of the first raw material supply device 21a or the third raw material supply device 21d, it may be provided on the downstream side.

Furthermore, although not shown, the powder processing equipment (for complex processing) 20c, 20d may include a heating device 27 (see FIG. 10) instead of the cooling device 24. Such a configuration improves the composite treatment capacity of the processing raw material, and is particularly remarkable when the processing raw material is a high-melting-point raw material resistant to heat and the composite processing proceeds at a high temperature. Also in the powder processing facility (for composite processing) provided with the heating device 27, it is preferable to provide the gas introduction duct 25 and the continuous open / close damper 26 (see FIG. 10), and the cooling device upstream of the continuous open / close damper 26. More preferably, 28 (see FIG. 10) is provided. Thereby, adhesion of the processed material in the powder processing apparatus 1 can be prevented. The heating device 27 may be provided on either the upstream side or the downstream side of the first raw material supply device 21a or the third raw material supply device 21d.

In the first and second embodiments of the powder processing equipment (for composite processing) 20c and 20d, a cooling device 24 and a heating device (not shown) are necessarily provided depending on the characteristics of the processing raw material. It does not have to be. Further, in the first and second embodiments of the powder processing equipment (for composite processing) 20c and 20d, a plurality of raw material supply apparatuses are used, but a plurality of processing raw materials are sufficiently mixed in advance outside the equipment. In addition, the premixed processing raw materials may be supplied by one raw material supply device (not shown).

Next, the spheronization processing method in the powder processing apparatus and the powder processing facility (for spheronization processing) will be described with reference to FIG. 1 (a), FIG. 1 (b), and FIG.
(1) The air exhaust device 22 of the powder processing facility (for spheroidizing processing) 20a is driven to generate an air flow in the supply duct 29, the powder processing device 1, and the exhaust duct 30.
(2) The rotor 2a of the powder processing apparatus 1 is rotated at a high speed by driving of a driving device (not shown), and is placed in the gap 5 formed outside the rotor 2a, that is, on the inner peripheral surface of the stator 3a. A swirling flow is generated in the formed circumferential groove 14a.
(3) The raw material supply device 21 of the powder processing facility (for spheroidizing treatment) 20 a is driven to supply the processing raw material into the supply duct 29. The processing raw material dispersed in the airflow is supplied to the supply port 6 of the powder processing apparatus 1 by the airflow in the supply duct 29.
(4) The processing raw material supplied together with the airflow from the supply port 6 moves from the lower end to the upper end of the stator 3a while being pressed against the circumferential groove 14a by the swirling flow generated in the circumferential groove 14a of the stator 3a. . At this time, the processing raw material is brought into a spherical shape by being in strong contact with the wall surface of the circumferential groove 14a or by being in strong contact with each other. The spheroidized product is discharged from the gap 5 to the discharge port 7.
(5) The processed material discharged to the discharge port 7 is sequentially discharged to the cyclone 23a and the bag filter 23b, which are the recovery device 23, by the airflow in the discharge duct 30. Here, the spheroidized product is collected by the cyclone 23a and the bag filter 23b.

Further, a composite processing method in the powder processing apparatus and the powder processing equipment (for composite processing) will be described with reference to FIGS. 1 (a), 1 (b), 11, and 12. FIG.
(1) The air exhaust device 22 of the powder processing facility (for complex processing) 20c is driven to generate an air flow in the supply duct 29, the powder processing device 1, and the exhaust duct 30.
(2) The rotor 2a of the powder processing apparatus 1 is rotated at a high speed by driving of a driving device (not shown), and is placed in the gap 5 formed outside the rotor 2a, that is, on the inner peripheral surface of the stator 3a. A swirling flow is generated in the formed circumferential groove 14a.
(3) Driving the first raw material supply device 21a and the second raw material supply device 21b of the powder processing facility (for complex processing) 20c, the first processing raw material (base powder) and the second processing raw material (child powder) The body) individually into the supply duct 29. The first and second processing raw materials dispersed in the airflow are supplied to the supply port 6 of the powder processing apparatus 1 by the airflow in the supply duct 29.
(4) The first and second processing raw materials supplied together with the airflow from the supply port 6 are pressed against the circumferential groove 14a by the swirling flow generated in the circumferential groove 14a of the stator 3a, and from the lower end of the stator 3a. Move to the top. At this time, the first and second processing raw materials are in strong contact with the wall surface of the circumferential groove 14a, or the processing raw materials are in strong contact with each other. As a result, the second processing raw material (child powder) adheres to the surface of the first processing raw material (mother powder) and is combined. The combined processed product is discharged from the gap 5 to the discharge port 7.
(5) The processed material discharged to the discharge port 7 is sequentially discharged to the cyclone 23a and the bag filter 23b, which are the recovery device 23, by the airflow in the discharge duct 30. Here, the combined processed product is collected by the cyclone 23a and the bag filter 23b.

In the powder processing facility (for composite processing) 20d, the procedure of (3) is as follows. The first raw material supply device 21a and the second raw material supply device 21b are driven to supply the first processing raw material (base powder) and the second processing raw material (child powder) to the raw material mixing device 21c. The raw material mixing device 21c is driven to uniformly mix the first processing raw material (mother powder) and the second processing raw material (child powder), and the second processing material (mother powder) is second on the surface of the first processing raw material (mother powder). A mixed processing raw material to which the processing raw material (child powder) is attached is generated. This mixed processing raw material is supplied into the supply duct 29 by driving the third raw material supply device 21d, and is supplied to the supply port 6 of the powder processing device 1 by the air flow in the supply duct 29. In the procedure (4), the mixed processing raw material in which the second processing raw material (child powder) adheres to the surface of the first processing raw material (base powder) is combined. In addition, you may supply a mixing process raw material in the supply duct 29 from the raw material mixing apparatus 21c, without using the 3rd raw material supply apparatus 21d. Since other procedures are the same as those of the powder processing facility (for composite processing) 20c, description thereof will be omitted.

Further, in the powder processing facilities (for complex processing) 20c and 20d, the processing raw materials are supplied from the plurality of raw material supply devices 21a, 21b and 21c, but the plurality of processing raw materials are sufficiently mixed in advance outside the equipment. In addition, the premixed processing raw materials may be supplied from one raw material supply device (not shown).

In the above description, the powder processing apparatus 1 and the powder processing equipment (for spheroidizing processing) 20a and the powder processing equipment (for composite processing) 20c and 20d according to the first embodiment have been described, but in other embodiments as well. Since the spheroidization processing method and the composite processing method are the same, description thereof is omitted.

DESCRIPTION OF SYMBOLS 1 Powder processing apparatus 2a, 2b, 2c Rotor 3a, 3b Stator 4 Main body part 5 Gap 6 Supply port 7 Discharge port 14a Circumferential groove 14b Spiral groove 15a Vertical groove 15b Inclined vertical groove 16a Vertical convex part 16b Inclined convex part 20a, 20b, 20c, 20d Powder processing equipment 21 Raw material supply device 21a First raw material supply device 21b Second raw material supply device 21c Raw material mixing device 22 Ventilation device 23 Recovery device 24, 28 Cooling device 27 Heating device A First groove Formation region B Second groove formation region C Protrusion formation region D Cylindrical region θ1, θ2, θ5 Angle

Claims (12)

A main body provided with a cylindrical rotor that rotates at high speed, and a cylindrical stator that is arranged coaxially with the rotor so as to form a gap outside the rotor, and at one end of the main body A supply port for supplying a processing raw material to the gap together with an air flow, and a processing object provided at the other end of the main body, wherein the processing raw material is spheroidized between the rotor and the stator. In the powder processing apparatus provided with a discharge port for discharging from the gap,
On the inner peripheral surface of the stator, a plurality of circumferential grooves orthogonal to the axis of the stator, or 60 degrees or more in the rotation direction of the rotor from the direction toward the downstream of the air flow with respect to the axis. A spiral groove having an angle of less than an angle is formed, and when the rotor rotates, the processing material is swung along the groove while being pressed against the circumferential groove or the groove bottom of the spiral groove. Powder processing equipment. A main body provided with a cylindrical rotor that rotates at high speed, and a cylindrical stator that is arranged coaxially with the rotor so as to form a gap outside the rotor, and at one end of the main body A supply port for supplying a processing raw material to the gap together with an air flow, and a processing object provided at the other end of the main body, wherein the processing raw material is spheroidized between the rotor and the stator. In the powder processing apparatus provided with a discharge port for discharging from the gap,
On the inner peripheral surface of the stator, a plurality of circumferential grooves orthogonal to the axis of the stator, or 60 degrees or more in the rotation direction of the rotor from the direction toward the downstream of the air flow with respect to the axis. A first groove forming region in which a spiral groove having an angle of less than an angle is formed, and a longitudinal groove formed continuously with the first groove forming region and parallel to the axis, or with respect to the axis A second groove forming region having inclined vertical grooves formed at an angle of more than 0 degree and not more than 45 degrees in the direction of rotation of the rotor from a direction toward the downstream of the air flow, and the processing when the rotor rotates A powder processing apparatus, wherein the raw material is swung along the groove while being pressed against the circumferential groove or the groove bottom of the spiral groove in the first groove forming region .   On the outer peripheral surface of the rotor, a plurality of vertical protrusions parallel to the axis of the rotor, or from the direction toward the downstream of the air flow with respect to the axis to more than 0 degree in the rotation direction of the rotor 45 The powder processing apparatus according to claim 1, wherein a plurality of inclined convex portions having an angle of less than or equal to degrees are formed. A powder processing apparatus according to any one of claims 1 to 3,
An exhaust device that is disposed downstream of the powder processing apparatus and that generates an air flow that is supplied to the supply port and discharged from the discharge port;
In order to supply the processing raw material to the supply port together with the air flow formed on the upstream side of the powder processing apparatus and formed on the upstream side of the powder processing apparatus, the processing raw material is placed upstream of the powder processing apparatus. A raw material supply device for supplying air flow formed;
A powder processing facility that is disposed upstream of the air exhaust device and includes a recovery device that recovers a processed product spheroidized by the powder processing device from an airflow discharged from the discharge port;
A powder processing facility comprising a cooling device for cooling the temperature of the airflow supplied to the supply port on the upstream side of the powder processing device.   The powder processing facility according to claim 4, further comprising a gas introduction duct branched from the discharge port, and a continuous open / close damper provided in the gas introduction duct.   The powder processing facility according to claim 5, wherein an upstream of the continuous opening / closing damper is connected between the cooling device and the raw material supply device. The powder processing apparatus according to claim 1 or 2,
A raw material supply device that is disposed upstream of the powder processing device and supplies a processing raw material to the supply port together with an air flow;
A wind exhaust device that is disposed downstream of the powder processing apparatus, generates an air flow that is supplied to the supply port and discharged from the discharge port;
A powder processing facility that is disposed upstream of the air exhaust device and includes a recovery device that recovers a processed product spheroidized by the powder processing device from an airflow discharged from the discharge port;
A powder processing facility comprising a heating device for heating the temperature of the airflow supplied to the supply port on the upstream side of the powder processing device.   The powder processing facility according to claim 7, further comprising a gas introduction duct branched from the discharge port, and a continuous open / close damper provided in the gas introduction duct.   The powder processing facility according to claim 8, further comprising a cooling device upstream of the continuous open / close damper. Two or more kinds of treatment raw materials are used as the treatment raw materials,
A plurality of raw material supply devices for supplying two or more kinds of processing raw materials are provided on the upstream side of the powder processing device,
The powder processing facility according to any one of claims 4 to 9, wherein the processed product combined by the powder processing apparatus is recovered by the recovery apparatus.   The powder processing facility according to claim 10, further comprising a raw material mixing device for mixing the two or more types of processing raw materials on the downstream side of the raw material supply device. Using a processing raw material composed of two or more kinds mixed in advance as the processing raw material,
One raw material supply device for supplying the premixed process material is provided on the upstream side of the powder treatment apparatus,
The powder processing facility according to any one of claims 4 to 9, wherein the processed product combined by the powder processing apparatus is recovered by the recovery apparatus.

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