JP6445314B2 - Powder processing equipment and powder processing equipment - Google Patents

Description

  The present invention relates to a powder processing apparatus and powder processing that spheroidizes a particulate powder, smoothes the surface of the powder, pulverizes the powder, or mixes two or more types of powder to form a composite. More particularly, the present invention relates to a powder processing apparatus and a powder processing facility capable of extending the processing time of powder to improve the processing effect and uniformize the processing of the powder.

  Recent improvements in powder shape, especially irregular spheres, for fine powders such as resin, carbon, metal, minerals, etc. used as materials for electronic technology, materials for optical technology, polymer materials, and medical materials As a result, needs for improving fluidity and filling properties have increased. In addition, there is a growing need for improving the physical properties of powders, particularly by modifying the powder surface by combining two or more kinds of powders to improve functionality.

  As a powder processing apparatus used for such powder processing, for example, a powder processing apparatus disclosed in Patent Document 1 is known. In this powder processing apparatus, a rotor is rotated on the inner peripheral side of a cylindrical stator, and a fine processing gap formed between the stator and the rotor is dispersed in an air current. Is configured to pass through. As a result, when the powder passes through the processing gap, the powder contacts the stator or the rotor, the powders contact each other, and the irregularly shaped powder is spheroidized, Processing such as smoothing the surface of the powder is performed. Moreover, when two or more types of powders are supplied, they can be efficiently mixed and combined.

  In particular, in the powder processing apparatus shown in Patent Document 1, a circumferential groove is provided on the inner circumferential surface of the stator, and a protrusion that enters the circumferential groove is provided on the outer circumferential surface of the rotor. Circumferential grooves and protrusions exist in the processing gap between the rotor and the rotor. In this case, by rotating the rotor, a high-speed swirling flow is generated in the circumferential groove, and the residence time of the powder can be extended. As a result, the processing time can be extended and the processing effect can be improved.

  On the other hand, when an axial groove extending in the axial direction of the rotor is provided on the inner peripheral surface of the stator and a similar axial groove is provided also on the outer peripheral surface of the rotor, the powder passing through the processing gap is removed. The powder can be pulverized and the powder can be miniaturized.

JP 2010-119974 A

  In the above-described powder processing apparatus, the powder is continuously supplied and processed, and the spherical powder is continuously discharged. For this reason, it is difficult to further improve the processing effect by lengthening the processing time of the powder.

  That is, as described above, in the powder processing apparatus disclosed in Patent Document 1, the retention time of the powder is extended by providing the circumferential groove and the protrusion, thereby improving the processing effect. However, there is a limit to further extending the processing time with such circumferential grooves. Although it is possible to extend the processing time by increasing the length of the stator and rotor, there is a limit to increasing the length of the stator and rotor due to constraints such as the size of the device. . Furthermore, although it is possible to extend the processing time by adjusting the flow rate (air volume) of the gas flowing in the processing gap between the stator and the rotor, the adjustment range remains small.

  By the way, as shown in FIG. 18, the airflow passing through the processing gap of the powder processing apparatus 100 is caused by the air exhaust device 101 provided on the downstream side of the powder processing apparatus 100. The powder processing apparatus 100 is supplied with the powder supplied from the raw material supply apparatus 102 and the gas supplied after being cooled from the cooling apparatus 103. In addition, the processed powder discharged from the powder processing apparatus 100 is continuously collected by a cyclone 104 provided between the powder processing apparatus 100 and the air exhaust apparatus 101. That is, the cyclone 104 separates and collects the processed powder from the gas and powder mixture discharged from the powder processing apparatus 100. The separated gas is supplied to the air exhaust device 101 through the bag filter 105.

  Therefore, for the purpose of extending the processing time of the powder, as shown in FIG. 18, it is also effective to supply the powder recovered by the cyclone 104 to the powder processing apparatus 100 for processing again. Conceivable.

  However, in the example shown in FIG. 18, the powder processed in the powder processing apparatus 100 is once discharged from the powder processing apparatus 100 and supplied to the cyclone 104, and the powder passing through the cyclone 104 is again the powder processing apparatus. Since it is returned to 100, the circulation path of the powder becomes long. As a result, there is a high possibility that the powder will remain in a portion other than the processing gap in the circulation path, and unevenness will occur in the processing of the powder, making it difficult to process the powder uniformly. Further, in this example, the power of the air exhaust device 101 becomes unstable, which may make it difficult to uniformly process the powder.

  The present invention has been made in consideration of such points, and a powder processing apparatus and a powder capable of extending the processing time of the powder to improve the processing effect and uniformize the processing of the powder. The purpose is to provide treatment facilities.

  The present invention provides a processing container, a supply port provided in the processing container to which a mixture containing powder and gas is supplied, a cylindrical stator provided in the processing container, and the stator A cylindrical rotor that is rotatably provided through a processing gap through which the mixture passes with respect to the stator, and is provided in the processing container and passes through the processing gap. A cyclone that separates and discharges the gas from the mixture, a return channel that returns the powder that has passed through the cyclone to the processing gap, and the powder that is provided in the processing container and passes through the processing gap. There is provided a powder processing apparatus comprising: a container powder discharge port for discharging a body; and a discharge port opening / closing valve provided at the container powder discharge port.

  In the above-described powder processing apparatus, the cyclone has a cyclone powder discharge port through which the powder flows out, which is provided on the inner peripheral side of the rotor. On the side, a flow path partition member is provided, the return flow path is formed between the rotor and the flow path partition member, and the flow path partition member is connected to the processing gap from the supply port. The supply channel for the mixture and the return channel may be partitioned.

  Further, in the powder processing apparatus described above, a guide member for guiding the powder flowing in the return channel to the processing gap may be provided in the return channel.

  In the powder processing apparatus described above, the guide member may extend in the radial direction.

  Further, in the above-described powder processing apparatus, the processing container is formed in a cylindrical shape, and the discharge opening / closing valve is provided on a seating surface provided on an inner peripheral side surface of the processing container, and on the seating surface. And a valve body detachably provided on the inner peripheral side of the processing container.

  In the above-described powder processing apparatus, a powder discharge pipe extending in a tangential direction of the processing container may be connected to the container powder discharge port.

  The above-described powder processing apparatus may further include a powder accumulation unit that accumulates the powder discharged from the container powder discharge port.

  Further, in the above-described powder processing apparatus, a powder recovery port for recovering the powder accumulated in the powder accumulation unit, and a serial connection between the powder accumulation unit and the powder recovery port are provided. And two recovery port opening / closing valves.

  In the above-described powder processing apparatus, the cyclone may include a plurality of first cyclones provided in parallel to each other.

  In the above-described powder processing apparatus, the cyclone may further include a second cyclone that separates the gas from the powder that has passed through the first cyclone.

  In addition, the present invention provides a powder processing apparatus, a gas supply / discharge apparatus that supplies the gas to the powder processing apparatus and discharges the gas from the powder processing apparatus, and the powder processing apparatus. A powder processing facility comprising: a raw material supply device that supplies the powder as a raw material to the gas to be supplied.

  The powder processing facility described above further includes a control device, and the control device stops supplying the powder after supplying a predetermined amount of the powder from the raw material supply device, and supplies the powder. The raw material supply device and the discharge port on / off valve may be controlled so that the discharge port on / off valve is opened after a lapse of a predetermined time from the stop.

  The powder processing facility may further include a second raw material supply device that supplies, as a raw material, a second powder that is different from the powder supplied from the raw material supply device. Good.

  ADVANTAGE OF THE INVENTION According to this invention, the processing time of powder can be extended, a processing effect can be improved, and the processing of powder can be made uniform.

FIG. 1 is a block diagram of a powder processing facility according to the first embodiment of the present invention. FIG. 2 is a cross-sectional view showing a configuration of the powder processing apparatus of FIG. FIG. 3 is a view showing a cross section taken along line AA of FIG. 4 is a partially enlarged cross-sectional view showing an example of the stator and the rotor of FIG. FIG. 5 is a partially enlarged cross-sectional view showing another example of the stator and the rotor of FIG. FIG. 6 is a partially enlarged cross-sectional view showing another example of the stator and the rotor of FIG. FIG. 7 is a diagram illustrating an example of a cross section taken along line BB in FIG. 6. FIG. 8 is a diagram illustrating another example of a cross section taken along line BB in FIG. 6. FIG. 9 is a partially enlarged cross-sectional view showing another example of the stator and the rotor of FIG. FIG. 10 is a diagram illustrating an example of a cross section taken along the line CC of FIG. 11 is a cross-sectional view taken along the line DD of FIG. 12 is a cross-sectional view taken along line EE in FIG. 13 is a diagram showing a cross section taken along line FF of FIG. FIG. 14 is a cross-sectional view showing a modification of the outlet damper of FIG. FIG. 15 is a block diagram showing another example of the powder processing facility shown in FIG. FIG. 16 is a cross-sectional view showing a configuration of a powder processing apparatus according to the second embodiment of the present invention. FIG. 17 is a diagram showing a cross section taken along line GG of FIG. FIG. 18 is a block diagram illustrating an example of a powder processing facility.

  Hereinafter, a powder processing apparatus and powder processing equipment in an embodiment of the present invention will be described with reference to the drawings.

(First embodiment)
A powder processing apparatus and powder processing equipment in the first embodiment of the present invention will be described with reference to FIGS.

  Here, first, the powder to be processed and the processing of the powder will be described. Examples of the powder include powders having an average particle size of several hundred μm or less, typified by toner, graphite, nylon, titanium oxide and the like, regardless of organic or inorganic type. The treatment of the powder is, for example, spheroidizing an irregular particle powder having an average particle diameter of 5 to 50 μm, smoothing irregularities on the particle surface, or, for example, an average particle diameter of 5 to 5 On the surface of the 50 μm mother powder (first powder), another sub-powder having a particle diameter of preferably 1/10 or less, more preferably 1/100 of the average particle diameter of the mother powder ( It means that two or more kinds of powders having different functions are combined, for example, the second powder is attached to form a composite powder. In the compounding process, the compounded powder is spheroidized at the same time. Furthermore, as another example of the powder processing, it is also possible to pulverize and refine the particulate powder.

  In the following description of the present embodiment, a case where one kind of powder is processed (for example, spheroidizing process, smoothing process, and miniaturization process) will be described as an example.

  As shown in FIG. 1, the powder processing facility 1 supplies a gas to the powder processing apparatus 20 in which the powder processing is performed by supplying a mixture containing powder and gas, and the powder processing apparatus 20 is supplied with the gas. In addition, an exhaust device 2 (gas supply / exhaust device) for discharging gas from the powder processing device 20 and a raw material supply device 3 for supplying powder as a raw material to the gas supplied to the powder processing device 20 I have. Among these, the exhaust device 2 is provided on the downstream side of the powder processing device 20, and the raw material supply device 3 is provided on the upstream side of the powder processing device 20.

  More specifically, the cooling device 4 is provided on the upstream side of the powder processing apparatus 20. The cooling device 4 has a suction port 5 through which gas (for example, air) is sucked, and cools the gas sucked from the suction port 5. A supply port 22 (described later) of the cooling device 4 and the powder processing device 20 is connected by a supply duct 6. When the air exhaust device 2 is driven, gas is sucked from the suction port 5, cooled by the cooling device 4, and supplied to the supply port 22 of the powder processing device 20 through the supply duct 6. It is preferable to use a cooler or the like for the cooling device 4 to enable not only gas cooling but also dehumidification. The cooling temperature is appropriately set depending on the raw material to be processed. For example, in the case of toner, the powder processing is performed so that the temperature of the gas discharged from the powder processing apparatus 20 does not exceed 60 ° C. to 70 ° C. The gas supplied to the device 20 is maintained at a low temperature. As described above, the powder processing facility 1 includes the cooling device 4 to prevent the powders from fusing with each other or the powder from fusing to the stator 23 or the rotor 24. Capability (throughput) can be improved. In particular, a remarkable effect can be obtained when the powder is a low heat material or a low melting point material, or when the amount of powder supplied is large. On the other hand, when the powder to be processed is a material whose processing effect is enhanced by raising the temperature during processing, the cooling device 4 may be replaced with a heater, and the powder passing through the heater may be heated. . The cooling device 4 may be provided on the downstream side of the raw material supply device 3 as long as it is on the upstream side of the powder processing device 20.

  The gas flowing in the supply duct 6 is supplied with the powder as the raw material from the raw material supply device 3 described above, and the supplied powder is dispersed in the gas flow to form a mixture containing the powder and the gas. The mixture is supplied to the powder processing apparatus 20. The raw material supply device 3 may be a screw-type or table-type supply device, but is not limited thereto, and any supply device may be used as long as powder can be supplied to the supply duct 6. it can.

  The powder processing apparatus 20 processes the powder contained in the supplied mixture. And the powder processing apparatus 20 is comprised so that the processed powder can be collect | recovered while separating and discharging | emitting gas from the processed powder. Details will be described later.

  A bag filter 7 is provided on the downstream side of the powder processing apparatus 20 so that gas discharged from a cyclone gas discharge port 44 (described later) of the powder processing apparatus 20 is supplied to the bag filter 7. It has become.

  The bag filter 7 is connected to the above-described air exhaust device 2 via the exhaust duct 8, and the gas exhausted from the bag filter 7 is supplied to the air exhaust device 2. The air exhaust device 2 has a discharge port 9 for discharging gas.

  Next, the powder processing apparatus 20 will be described with reference to FIGS.

  As shown in FIG. 2, the powder processing apparatus 20 includes a processing container 21, a supply port 22 provided in the processing container 21 and supplied with a mixture containing powder and gas from the supply duct 6 described above, A stator 23 provided in the processing container 21 and a cylindrical rotor 24 rotatably provided on the inner peripheral side of the stator 23 are provided. Among these, in the example shown in FIG. 2, the processing container 21 includes four containers each formed in a cylindrical shape (that is, a container 21 a provided with a supply port 22, a container 21 b provided with a stator 23, and will be described later. A cylindrical shape is formed by combining the container 21c provided with the container powder discharge port 55 and the container 21d) provided thereabove. The supply port 22 is preferably formed so that the mixture flows into the processing container 21 along the tangential direction of the processing container 21. The rotor 24 is provided via a processing gap 25 through which the mixture passes with respect to the stator 23. In other words, a processing gap 25 is formed between the stator 23 and the rotor 24, and the mixture supplied to the supply port 22 can pass through the processing gap 25.

  The stator 23 is made of a metal or the like in a cylindrical shape, and is formed so as to surround the outer peripheral surface of the rotor 24. The inner peripheral surface of the stator 23 is preferably formed of a wear resistant material such as cemented carbide or ceramic. Alternatively, it may be subjected to wear resistance treatment by thermal spraying such as hard chrome plating or cemented carbide.

  A rotating shaft 26 extending in the vertical direction is connected to the rotor 24. A base B is provided at the bottom of the processing container 21 (the container 21a in the example shown in FIG. 2), and the rotating shaft 26 is rotatably supported by a bearing R provided on the base B. Thus, although the rotor 24 is rotatably supported by the base B, it is not supported by the top plate 21e provided in the top part (the container 21d in the example shown in FIG. 2) of the processing container 21. . In this way, the rotor 24 is supported in a cantilever manner.

  The base B is provided with a rotation drive unit 27 such as a motor for rotating the rotor 24. The rotation drive unit 27 has a drive shaft 28, and a V pulley 29 is attached to the drive shaft 28. A similar V pulley 30 is also mounted on the rotary shaft 26 described above, and a V belt 31 is wound around these V pulleys 29 and 30. With such a configuration, the rotational driving force of the rotational driving unit 27 is transmitted to the rotor 24 and the rotor 24 rotates. The rotor 24 according to the present embodiment rotates at a rotational speed of 8000 rpm as an example, but is not limited to this, and it is preferable that the rotational speed of the rotor 24 can be adjusted by the rotational drive unit 27. is there. In this case, the rotor 24 is rotated at an optimum rotational speed for various powders having different properties such as powders such as graphite that do not undergo plastic deformation and low melting point powders, and appropriate powder processing is performed. Can be done.

  The rotor 24 is preferably made of a metal or the like in a cylindrical shape, and its outer peripheral surface is formed of a wear-resistant material such as cemented carbide or ceramic. Alternatively, the rotor 24 may be subjected to wear resistance treatment by spraying hard chrome plating or cemented carbide.

  As shown in FIGS. 3 and 4, circumferential grooves 23 a that are formed concentrically with the rotor 24 and extend in the circumferential direction may be provided in multiple stages on the inner peripheral surface of the stator 23. For example, the circumferential groove 23a may be formed in a trapezoidal shape as shown in FIG. On the other hand, a large number of blades 24 a extending in the axial direction of the rotor 24 may be provided on the outer peripheral surface of the rotor 24 so as to be separated in the circumferential direction. In this case, the blade 24 a exists in the processing gap 25 between the stator 23 and the rotor 24, and keeps a narrow gap without contacting the inner peripheral surface of the stator 23. Rotate along the circumference. In the example shown in FIGS. 3 and 4, since the circumferential groove 23 a is provided in the stator 23, it is possible to suppress excessively strong contact between powders, suppress powder pulverization, Can be made spherical or smooth with high accuracy. Further, the powder can be retained in the circumferential groove 23a, and the retention time of the powder in the processing gap 25 can be extended to improve the processing effect.

  In addition, when providing the circumferential groove 23a in the inner peripheral surface of the stator 23, as shown in FIG. 5, you may make it provide several protrusion 24b in the outer peripheral surface of the braid | blade 24a. In the example shown in FIG. 5, the plurality of protrusions 24b are arranged side by side in the circumferential direction and arranged in multiple stages. Each protrusion 24b goes into the corresponding circumferential groove 23a beyond the inner circumferential surface of the stator 23 (inlet of the circumferential groove 23a). In this case, the protrusion 24b rotates along the circumferential groove 23a in the circumferential groove 23a while maintaining a narrow gap without contacting the inner wall of the circumferential groove 23a. In the example shown in FIG. 5, unless there is a large difference between the cross section of the circumferential groove 23a and the projected cross section of the protrusion 24b, the rotation of the rotor 24 causes a swirling flow equivalent to the rotational speed of the rotor 24 to enter the circumferential groove 23a. Occur. For this reason, the residence time of the powder staying in the circumferential groove 23a can be extended, and the powder can be spheroidized or smoothed with higher accuracy, and the processing effect can be improved. In the form shown in FIG. 5, it is preferable that the stator 23 is divided into two or more in the circumferential direction and assembled so as to be applied from the side of the rotor 24.

  Further, instead of the circumferential groove 23a, a plurality of stator side axial grooves 23b may be provided on the inner peripheral surface of the stator 23 as shown in FIGS. The stator-side axial groove 23b extends in the axial direction of the rotor 24 and is spaced apart in the circumferential direction. For example, the stator side axial groove 23b may be formed in a U shape as shown in FIG. 7, or may be formed in a generally triangular shape as shown in FIG. A large number of blades 24 a extending in the axial direction of the rotor 24 are provided on the outer peripheral surface of the rotor 24 so as to be spaced apart from each other in the circumferential direction as in the example shown in FIG. 4. In this case, the blade 24a rotates along the inner peripheral surface of the stator 23 while maintaining a narrow gap without contacting the inner peripheral surface of the stator 23. In the example shown in FIGS. 6 to 8, as in the examples shown in FIGS. 9 and 10 to be described later, the powder can be easily pulverized and the powder can be made finer. Further, the examples shown in FIGS. 6 to 8 have a larger processing gap 25 than the examples shown in FIGS. 9 and 10, so that a relatively large raw material can be processed and the gas in the processing gap 25 can be processed. The flow pressure loss can be reduced. Moreover, since pressure loss can be reduced, the rotor 24 can process powder at a low rotational speed. As described above, the examples shown in FIGS. 6 to 8 can have versatility.

  When the stator-side axial groove 23b is provided on the inner peripheral surface of the stator 23, a plurality of rotor-side axial grooves 24c are provided on the outer peripheral surface of the rotor 24 as shown in FIGS. It may be done. The rotor side axial groove 24c extends in the axial direction of the rotor 24 similarly to the stator side axial groove 23b, and is spaced apart in the circumferential direction. In this case, the rotor 24 rotates along the inner peripheral surface of the stator 23 while maintaining a narrow gap without contacting the inner peripheral surface of the stator 23. In the example shown in FIGS. 9 and 10, the powder is more easily pulverized than in the examples shown in FIGS. 6 to 8, and the powder can be further refined. That is, the shapes of the stator-side axial groove 23b and the rotor-side axial groove 24c shown in FIGS. 9 and 10 are suitable for pulverizing and miniaturizing the powder. Further, in the examples shown in FIGS. 9 and 10, the processing gap 25 tends to be narrower than in the examples shown in FIGS. 6 to 8, so that a blade 52 is provided in the return channel 50 described later and the blade 52 is rotated. It is preferable to rotate together with the child 24. As a result, as will be described later, a flow from the center side toward the outer peripheral side can be formed in the return flow path 50, and the gas supplied to the supply port 22 passes through the return flow path 50 and the cyclone 40 (described later). ), And can smoothly flow into the processing gap 25. In this case, by increasing the rotational speed of the rotor 24, the effect of preventing the backflow can be enhanced, and further, the pulverization force of the powder in the processing gap 25 can be enhanced. For this reason, the pulverization force of the powder can be further increased, and the powder can be further miniaturized. In the example shown in FIG. 10, the stator side axial groove 23b and the rotor side axial groove 24c are both formed in a U shape, but the present invention is not limited to this.

  As shown in FIG. 2, a cyclone 40 that separates and discharges gas from the mixture that has passed through the processing gap 25 between the stator 23 and the rotor 24 is provided in the processing container 21. The cyclone 40 is provided above the cyclone main body 41, the cyclone main body 41, the cyclone inlet 42 through which the mixture that has passed through the processing gap 25 flows, and the cyclone main body 41, and passes through the cyclone main body 41. And a cyclone powder outlet 43 for discharging the powder. Thus, the cyclone 40 according to the present embodiment is configured as a single cyclone. The cyclone inlet 42 is disposed above the rotor 24. In the example shown in FIG. 11, four cyclone inlets 42 are provided, but the present invention is not limited to this. The cyclone powder discharge port 43 is provided below the rotor 24 and on the inner peripheral side of the rotor 24. The cyclone 40 is attached to the processing container 21 so as not to rotate. By the way, as a structure for separating the gas from the mixture, a classifier that separates the gas by rotating itself can be cited. However, the cyclone 40 as in the present embodiment cannot be rotated in the processing vessel 21. Since it is attached, the structure of the powder processing apparatus 20 can be simplified compared to the case where a classifier is used.

  In the upper part of the cyclone main body 41, a cyclone gas discharge port 44 for discharging the gas separated from the powder is provided. The cyclone gas outlet 44 is disposed at the center of the cyclone inlet 42 and extends upward from the inside of the cyclone main body 41. The top plate 21 e of the processing container 21 is provided with a container gas outlet 53 extending outward from the processing container 21. In the example shown in FIG. 1, the container gas discharge port 53 is continuously formed integrally with the cyclone gas discharge port 44 so as to communicate with the container gas discharge port 53 and the cyclone gas discharge port 44. Being sucked by. With this suction force, the gas separated in the cyclone 40 passes through the cyclone gas discharge port 44 and is discharged from the container gas discharge port 53. That is, the gas is separated from the powder in the cyclone 40 by this suction force. The gas discharged from the container gas discharge port 53 is supplied to the bag filter 7 described above.

  A return channel 50 is provided below the rotor 24. In the example shown in FIG. 12, the return flow path 50 extends from the cyclone powder discharge port 43 to the processing gap 25 between the stator 23 and the rotor 24 and communicates therewith. By such a return channel 50, the powder that passes through the cyclone main body 41 and is discharged from the cyclone powder discharge port 43 is returned to the processing gap 25.

  As shown in FIG. 2, a flow path partition member 51 is provided closer to the supply port 22 than the rotor 24. More specifically, the flow path partition member 51 is provided below the rotor 24 and separated from the rotor 24, and the return described above is provided between the rotor 24 and the flow path partition member 51. A flow path 50 is formed. The flow path partition member 51 partitions the supply flow path of the mixture from the supply port 22 to the processing gap 25 and the return flow path 50 from the cyclone powder discharge port 43 toward the processing gap 25. The mixture flowing from the port 22 to the processing gap 25 is prevented from flowing into the return channel 50.

  In the return channel 50, a plurality of blades 52 (guide members) for guiding the powder flowing in the return channel 50 to the processing gap 25 are provided. As shown in FIG. 12, these blades 52 are spaced apart from each other in the circumferential direction and extend in the radial direction. Further, the blade 52 connects the rotor 24 and the flow path partition member 51, and the rotor 24, the flow path partition member 51, and the blade 52 rotate integrally. For this reason, a velocity component in the circumferential direction is imparted from the blade 52 to the powder and gas mixture flowing in the return flow path 50, whereby centrifugal force is generated in the powder and A force toward is generated. In this way, the powder discharged from the cyclone powder discharge port 43 flows smoothly into the processing gap 25.

  Incidentally, as shown in FIG. 2, a heating / cooling jacket 54 may be provided on the outer peripheral side of the processing vessel 21. The heating / cooling jacket 54 is formed at a position facing the stator 23, that is, so as to surround the stator 23 from the outer peripheral side, and heats or cools the stator 23. Thus, the powder in the processing gap 25 can be heated or cooled according to the properties of the powder to enhance the processing effect. For example, a cooling liquid or a heating liquid of −20 ° C. to 90 ° C. is supplied into the heating / cooling jacket 54, and when the powder is weak heat, the stator 23 is cooled and the inside of the processing gap 25 is cooled. In the case of a powder that suppresses the temperature rise and increases the processing effect by increasing the processing temperature, it is preferable to heat the stator 23 to increase the temperature in the processing gap 25.

  As shown in FIGS. 2 and 13, the processing container 21 is provided with a container powder discharge port 55 for discharging the powder that has passed through the processing gap 25 (that is, the processed powder). The container powder discharge port 55 is disposed above the stator 23. The container powder discharge port 55 is provided with a discharge port damper 56 (discharge port opening / closing valve). The discharge port damper 56 includes a seat surface 56a provided on the outer peripheral side surface of the processing container 21, and a valve body 56b provided so as to be detachable from the outer peripheral side of the processing container 21 with respect to the seat surface 56a. Yes. For example, the seat surface 56 a is preferably an outer surface of a flange fixed to the processing container 21.

  A powder discharge pipe 57 extending in the radial direction of the rotor 24 is connected to the container powder discharge port 55. The valve body 56 b of the discharge port damper 56 described above is movable in the axial direction of the powder discharge pipe 57. A valve body driving portion 56d (for example, an air cylinder) is connected to the valve body 56b via a valve rod 56c. The valve body driving portion 56d causes the valve body 56b to be closed when the seat 56a is seated. (Position indicated by a solid line in FIG. 2) and an open position (position indicated by a two-dot chain line in FIG. 2) spaced from the seating surface 56a to the outer peripheral processing container 21 of the processing container 21. .

  As shown in FIG. 2, a powder accumulation part 59 is connected to the powder discharge pipe 57 via a powder guide pipe 58. The powder accumulation unit 59 accumulates the processed powder discharged from the container powder discharge port 55. The powder guide tube 58 is formed so as to extend obliquely downward from the powder discharge tube 57.

  A powder collection port 60 for collecting the powder accumulated in the powder accumulation unit 59 is provided on the downstream side of the powder accumulation unit 59. Two recovery port dampers 61 and 62 (recovery port on-off valves) are provided in series between the powder accumulation unit 59 and the powder recovery port 60.

  As shown in FIG. 1, the powder processing facility 1 further includes a control device 10. The control device 10 controls the discharge damper 56 of the raw material supply device 3 and the powder processing device 20 described above, and after supplying a predetermined amount of powder from the raw material supply device 3, the supply of powder is stopped and the powder is stopped. After a predetermined time has elapsed since the body supply was stopped, the discharge port damper 56 of the powder processing apparatus 20 is opened. In this way, the processed powder that has been processed for a predetermined time is discharged from the container powder discharge port 55 and stored in the powder storage unit 59.

  Next, the operation of the present embodiment having such a configuration, that is, the powder processing method in the powder processing facility 1 according to the present embodiment will be described.

  First, the air exhaust device 2 shown in FIG. 1 is driven, and gas is sucked from the suction port 5 of the cooling device 4. As a result, a gas flow that flows through the supply duct 6, the powder processing apparatus 20, and the discharge duct 8 in this order is formed. Further, in the powder processing apparatus 20 shown in FIG. 2, a gas flow that flows from the supply port 22 through the processing gap 25 to the container gas discharge port 53 is formed. The powder supplied to the supply duct 6 is cooled to a desired temperature by the cooling device 4 as necessary. Alternatively, when the cooling device 4 is replaced with a heater, the powder supplied to the supply duct 6 is heated to a desired temperature by the heater. The gas flowing through the discharge duct 8 is discharged from the discharge port 9 of the air exhaust device 2.

  Subsequently, the rotation driving unit 27 of the powder processing apparatus 20 shown in FIG. 2 is driven to rotate the rotor 24. As a result, a swirling flow corresponding to the rotational speed of the rotor 24 is generated in the processing gap 25 formed between the stator 23 and the rotor 24.

  Next, the raw material supply device 3 is driven, and powder as a raw material is supplied into the supply duct 6. The powder supplied into the supply duct 6 is dispersed in the gas flow in the supply duct 6 to form a mixture, and is supplied to the supply port 22 of the raw material supply apparatus 3.

  The mixture supplied to the supply port 22 of the powder processing apparatus 20 flows into the processing gap 25 between the stator 23 and the rotor 24. For example, when the circumferential groove 23a is formed on the inner circumferential surface of the stator 23 as shown in FIG. 4 and the like, the powder in the processing gap 25 is pressed against the inner wall of the circumferential groove 23a by the swirling flow. While being processed, the processing gap 25 moves from the lower end (upstream end) to the upper end (downstream end). At this time, the powder comes into contact with the inner wall of the circumferential groove 23a, or the powders come into contact with each other, and are spheroidized or smoothed.

  The mixture that has passed through the processing gap 25 reaches the cyclone inlet 42 of the cyclone 40 shown in FIG. At this time, the discharge port damper 56 provided in the container powder discharge port 55 is closed.

  The mixture that has reached the cyclone inlet 42 flows into the cyclone main body 41 from the cyclone inlet 42 and descends while turning. During this time, the powder descends while turning along the inner wall surface of the cyclone main body 41 by centrifugal force and reaches the cyclone powder discharge port 43. On the other hand, the gas turns upward at the center of the cyclone main body 41 due to the suction force of the air exhaust device 2, passes through the cyclone gas outlet 44, and reaches the container gas outlet 53.

  The powder that has reached the cyclone powder outlet 43 passes through the return channel 50 together with the surrounding gas and is returned to the processing gap 25. When flowing through the return channel 50, the powder and gas in the return channel 50 flow from the blades 52 connecting the rotor 24 and the channel partition member 51 in the same direction as the rotation direction of the rotor 24. A circumferential speed component is added. Thus, centrifugal force is generated in the powder and gas, and the powder and gas flow toward the outer peripheral side, and a flow toward the outer peripheral side is formed in the return flow path 50. At this time, a gas flow from the lower end to the upper end of the rotor 24 is formed in the processing gap 25, and a swirl flow is formed by the blade 24 a of the rotor 24. The flow in the processing gap 25 also forms a flow toward the outer peripheral side in the return channel 50. For this reason, the powder that has reached the cyclone powder outlet 43 is sucked into the return flow path 50 and reaches the processing gap 25 along the flow toward the outer periphery formed in the return flow path 50. Thus, the powder that has reached the cyclone powder outlet 43 is smoothly returned to the processing gap 25 by the return channel 50, and the powder that has reached the cyclone powder outlet 43 passes through the cyclone main body 41. Ascending and backflowing to the cyclone gas discharge port 44, it is prevented from being discharged from the powder processing apparatus 20.

  Then, the powder that has reached the processing gap 25 from the return channel 50 is spheroidized or smoothed again in the processing gap 25. In this way, the powder circulates in the powder processing apparatus 20 and the powder processing is repeated. While the powder is circulating, the air exhaust device 2 is continuously driven, and a flow from the supply port 22 of the powder processing device 20 toward the container gas discharge port 53 is formed. This suppresses the gas from continuously passing through the processing gap 25 and increasing the temperature of the powder in the processing gap 25.

  On the other hand, the gas that has reached the container gas discharge port 53 is discharged from the container gas discharge port 53 and supplied to the bag filter 7 (see FIG. 1) provided on the downstream side of the powder processing apparatus 20.

  The gas that has passed through the bag filter 7 passes through the discharge duct 8, is supplied to the air exhaust device 2, and is discharged from the exhaust port 9 of the air exhaust device 2.

  By the way, the raw material supply device 3 and the outlet damper 56 are controlled by the control device 10, and the supply of powder by the raw material supply device 3 is stopped after supplying a predetermined amount of powder from the raw material supply device 3. After a lapse of a predetermined time from the stop of the supply, the discharge damper 56 is opened.

  More specifically, first, the raw material supply device 3 is driven, and supply of powder as a raw material is started.

  Subsequently, after a predetermined amount of powder is supplied, the supply of powder is stopped. At this time, for example, the supply time for a predetermined supply amount may be obtained from the flow rate per unit time of the powder supplied from the raw material supply device 3, and the powder may be supplied for this supply time. Note that the amount of powder supplied by the raw material supply device 3 is preferably set based on, for example, the capacity of the powder processing apparatus 20, the processing capacity, the capacity of the rotation drive unit 27, and the like.

  Next, after a predetermined time has passed since the supply of the powder was stopped, the discharge port damper 56 is opened, and the processed powder is discharged from the container powder discharge port 55. As a result, the powder is circulated through the processing gap 25, the cyclone 40, and the return channel 50 over a predetermined processing time, and is spheroidized or smoothed. By adjusting the processing time, it is possible to adjust the processing effect of the powder. Since the powder in the processing container 21 is swirling, when the discharge port damper 56 is opened, the swirling powder is smoothly discharged from the container powder discharge port 55 by centrifugal force.

  The processed powder discharged from the container powder discharge port 55 passes through the powder discharge pipe 57 and the powder guide pipe 58 and reaches the powder accumulation unit 59. At this time, the two recovery port dampers 61 and 62 provided on the downstream side of the powder accumulation unit 59 are closed. As a result, the powder reaching the powder accumulation unit 59 is accumulated, and the gas is prevented from flowing back from the powder collection port 60 through the powder accumulation unit 59 into the processing container 21. .

  After the processed powder is accumulated in the powder accumulation unit 59, the discharge port damper 56 is closed.

  When collecting the powder accumulated in the powder accumulation unit 59, first, the first collection port damper 61 on the upstream side of the two collection port dampers 61 and 62 is opened. As a result, the powder accumulated in the powder accumulation unit 59 is temporarily accumulated in a region between the two recovery port dampers 61 and 62. Also in this case, since the downstream second recovery port damper 62 is closed, it is possible to prevent the gas from flowing backward from the powder recovery port 60 into the processing container 21.

  Subsequently, the first recovery port damper 61 is closed, and then the downstream second recovery port damper 62 is opened. As a result, the powder temporarily accumulated in the region between the two recovery port dampers 61 and 62 is recovered via the powder recovery port 60. Since the first recovery port damper 61 is closed when the second recovery port damper 62 is opened, it is possible to prevent the gas from flowing back into the processing container 21 from the powder recovery port 60.

  After collecting the powder, the second collection port damper 62 is closed.

  In this way, a series of steps for spheroidizing and collecting the powder is completed. Subsequently, when processing a new powder, the powder as the raw material is again supplied from the raw material supply device 3 to the supply duct 6 and the above-described steps may be repeated. If the discharge damper 56 is closed, the powder can be processed in the processing container 21 in parallel with the collection of the powder accumulated in the powder accumulation unit 59.

  As described above, according to the present embodiment, the powder contained in the mixture that has passed through the processing gap 25 provided between the stator 23 and the rotor 24 passes through the cyclone 40 and the return channel 50. Then, it is returned to the processing gap 25 again. Accordingly, the powder can be circulated in the powder processing apparatus 20 to pass through the processing gap 25 a plurality of times, and the powder processing can be repeated. For this reason, the processing time of powder can be extended and the processing effect of powder can be improved.

  Further, according to the present embodiment, the processing gap 25 between the stator 23 and the rotor 24 provided in the processing container 21, and the cyclone 40 and the return flow path similarly provided in the processing container 21 are also provided. The powder can be circulated through 50. Thereby, the circulation path of the powder can be shortened, and it is possible to suppress the powder from being retained in a portion other than the processing gap 25 in the circulation path. For this reason, it is possible to suppress the occurrence of unevenness in the processing of the powder and make the processing of the powder uniform.

  Further, according to the present embodiment, the flow path partition member 51 is provided below the rotor 24, and the flow path partition member 51 allows the supply flow path of the mixture from the supply port 22 to the processing gap 25, A return channel 50 is defined. As a result, the mixture supplied to the supply port 22 can be prevented from flowing directly to the cyclone 40 without passing through the processing gap 25, and the powder in the return channel 50 can flow back to the cyclone 40. Can be prevented. For this reason, the powder can be smoothly circulated in the powder processing apparatus 20.

  Further, according to the present embodiment, the outlet damper 56 opens after a predetermined time has elapsed since the supply of the powder by the raw material supply device 3 was stopped. Thus, the powder can be continuously processed during the processing time, and the powder can be processed efficiently. Further, by adjusting the processing time, it is possible to perform appropriate processing on various powders, and improve the versatility of the powder processing apparatus 20.

  Further, according to the present embodiment, the return passage 50 is provided with the blade 52 that guides the powder flowing in the return passage 50 to the processing gap 25. Thus, a velocity component in the circumferential direction can be applied from the blades 52 to the powder and gas flowing in the return channel 50, and centrifugal force can be generated in the powder and gas. For this reason, a flow from the center side toward the outer peripheral side can be formed in the return channel 50, and the powder in the return channel 50 can flow smoothly into the processing gap 25. Further, by rotating the blade 52 together with the rotor 24, it is possible to prevent the gas supplied to the supply port 22 from flowing back to the cyclone 40 through the return channel 50, and the powder in the cyclone 40 is discharged from the cyclone gas. Backflow to the outlet 44 and discharge from the powder processing apparatus 20 can be prevented. In particular, according to the present embodiment, since the guide member extends in the radial direction, it is possible to effectively impart a circumferential velocity component to the powder and gas flowing in the return flow path 50.

  In the present embodiment described above, the discharge port damper 56 has a seat surface 56a provided on the outer peripheral side surface of the processing container 21 and a valve body 56b provided so as to be detachable from the seat surface 56a. The example in which the valve body 56b is movable from the seating surface 56a to the outer peripheral side of the processing container 21 has been described. However, the present invention is not limited to this, and as shown in FIG. 14, the seat surface 56a of the discharge port damper 56 is provided on the inner peripheral side surface of the processing container 21, and the valve body 56b is treated with respect to the seat surface 56a. The container 21 may be separable from the inner peripheral side. In this case, the valve body 56b is positioned on the inner peripheral side of the processing container 21 in the open position (the position indicated by the two-dot chain line in FIG. 14). For this reason, the powder swirling in the processing container 21 can easily flow into the container powder discharge port 55, and the powder can be discharged smoothly.

  In the example shown in FIG. 14, the powder discharge pipe 57 extends in the tangential direction of the processing container 21. Thus, the powder swirling in the processing container 21 can easily flow into the powder discharge pipe 57, and the powder can be discharged smoothly. In the example shown in FIG. 14, the valve stem 56 c extends in a direction inclined in the axial direction of the powder discharge pipe 57.

  The powder exhaust pipe 57 may be connected to the air exhaust device 2 shown in FIG. 1 or another air exhaust device (not shown) so that the gas in the powder exhaust pipe 57 is sucked. In this case, the powder can be quickly discharged from the processing container 21, and the discharge time of the powder can be shortened.

  Moreover, in this Embodiment mentioned above, the example of the powder processing equipment 1 which processes 1 type of powder (spheroidization process, smoothing process, refinement | miniaturization process, etc.) was demonstrated. However, the present invention is not limited to this, and the above-described powder processing apparatus 20 can also be applied to the powder processing facility 1 that performs composite processing of two or more kinds of powders. FIG. 15 shows, as an example, a powder processing facility 1 that combines two types of powders.

  In the powder processing facility 1 shown in FIG. 15, the raw material supply device 3 described above supplies a mother powder as a raw material, and supplies a child powder (second powder) different from the mother powder as a raw material. A second (other) raw material supply device 11 is further provided. The second raw material supply device 11 can have the same configuration as the raw material supply device 3. That is, the mother powder is supplied from the raw material supply device 3 into the supply duct 6, and the child powder is supplied from the second raw material supply device 11 into the supply duct 6. As a result, the mother powder and the child powder supplied into the supply duct 6 are dispersed in the gas flow in the supply duct 6 to form a mixture and supplied to the supply port 22 of the powder processing apparatus 20. The In the example shown in FIG. 15, the second raw material supply device 11 is provided on the downstream side of the raw material supply device 3, but is not limited thereto. Further, when three or more kinds of powders are used as raw materials, such a raw material supply device may be provided for each kind of powder.

  The mother powder and the child powder contained in the mixture supplied to the powder processing apparatus 20 are combined by the same principle as the spheroidizing process described above. That is, the mother powder and the child powder supplied to the supply port 22 of the powder processing apparatus 20 flow into the processing gap 25 formed between the stator 23 and the rotor 24. The powder in the processing gap 25 is pressed against the inner wall of the circumferential groove 23a by the swirling flow, and moves from the lower end (upstream end) to the upper end (downstream end) of the processing gap 25. At this time, the mother powder and the child powder come into contact with the inner wall of the circumferential groove 23a, or the mother powder and the child powder come into contact with each other. As a result, the child powder adheres to the surface of the mother powder and is combined. Further, the composite powder is spheroidized by such contact. For this reason, it is possible to extend the powder composite treatment time by repeating the powder composite treatment, and to improve the powder composite treatment effect.

  In the example shown in FIG. 15, the mother powder and the child powder are separately supplied to the supply duct 6, but the present invention is not limited to this, and any method can be adopted. For example, the mother powder and the child powder may be mixed in advance and then supplied to the supply duct 6, or a separate mixer (not shown) may be provided to May be supplied to the supply duct 6 after being mixed at a predetermined ratio.

  Moreover, in this Embodiment mentioned above, the gas attracted | sucked from the suction port 5 of the cooling device 4 passes the supply duct 6, the powder processing apparatus 20, and the discharge duct 8, and the discharge port of the exhaust apparatus 2 An example of the open-circuit type powder processing facility 1 that allows gas to flow in one direction as discharged from the nozzle 9 has been described. However, the present invention is not limited to this, and the powder processing facility 1 returns the gas discharged from the discharge port 9 of the exhaust device 2 to the suction port 5 of the cooling device 4 so that the gas is circulated. It may be a circuit type.

(Second Embodiment)
Next, the powder processing apparatus and the powder processing equipment in the second embodiment of the present invention will be described with reference to FIGS.

  In the second embodiment shown in FIGS. 16 and 17, the cyclone has a plurality of first cyclones provided in parallel to each other, and a second cyclone that separates gas from the powder that has passed through the first cyclone, The other points are substantially the same as those of the first embodiment shown in FIGS. 1 to 13. 16 and 17, the same parts as those in the first embodiment shown in FIGS. 1 to 13 are denoted by the same reference numerals, and detailed description thereof is omitted.

  As shown in FIGS. 16 and 17, the cyclone 40 according to the present embodiment includes a plurality of first cyclones 70 provided in parallel to each other and a second cyclone that separates gas from the powder that has passed through the first cyclone 70. 71. In the example shown in FIGS. 16 and 17, four first cyclones 70 are provided in the processing container 21 and are arranged at substantially the same height position. The powder passing through the processing gap 25 and heading toward the return channel 50 is divided into the first cyclones 70 and flows in parallel. Thus, in the present embodiment, the cyclone 40 has a multi-cyclone structure.

  The cyclone inlet 42 according to the present embodiment is provided in the upper part of the corresponding first cyclone 70. The cyclone powder outlet 43 is provided in the lower part of the second cyclone 71. Each first cyclone 70 is connected to the second cyclone 71 so that the mixture that has passed through the first cyclone 70 passes through the communication port 72 and flows into the second cyclone 71.

  A cyclone gas outlet 44 for discharging the gas separated from the powder is provided at the top of each first cyclone 70. The cyclone gas outlet 44 is disposed at an upper portion and a center portion of the first cyclone 70 and extends upward from the inside of the first cyclone 70. The top plate 21e of the processing container 21 is provided with a container gas discharge port 53. The container gas discharge port 53 communicates with the cyclone gas discharge port 44, and the container gas discharge port 53 and the cyclone gas discharge port 44 are exhausted as described above. It is sucked by the wind device 2. With this suction force, the gas separated in the first cyclone 70 passes through the cyclone gas discharge port 44 and is discharged from the container gas discharge port 53. That is, the gas is separated from the powder in the first cyclone 70 and the second cyclone 71 by this suction force. The gas discharged from the container gas discharge port 53 is supplied to the bag filter 7 described above.

  The mixture that has passed through the processing gap 25 and has reached the cyclone inlet 42 flows into the first cyclone 70 from the cyclone inlet 42, and descends while swirling in each first cyclone 70. During this time, the powder descends while turning along the inner wall surface of the first cyclone 70 by centrifugal force, and reaches the communication port 72. On the other hand, the gas separated from the powder in the first cyclone 70 turns upward at the center of the first cyclone 70 by the suction force of the exhaust device 2 and passes through the corresponding cyclone gas outlet 44 to the container. It reaches the gas outlet 53.

  The mixture that has reached the communication port 72 passes through the communication port 72 while turning, and flows into the second cyclone 71 while turning. And the mixture which flowed into the 2nd cyclone 71 descends, turning. During this time, the powder descends while turning along the inner wall surface of the second cyclone 71 due to centrifugal force, and reaches the cyclone powder discharge port 43. On the other hand, the gas starts to rise at the center of the second cyclone 71 main body, passes through the communication port 72, flows into the first cyclone 70, and together with the gas separated from the powder in the first cyclone 70, the cyclone The gas passes through the gas outlet 44 and is discharged from the container gas outlet 53.

  Thus, according to this Embodiment, the cyclone 40 has the some 1st cyclone 70 provided in parallel. As a result, the mixture that has reached the cyclone inlet 42 can be diverted to each first cyclone 70, and gas can be separated from the powder in each first cyclone 70. For this reason, the gas can be separated from the mixture that has passed through the treatment gap 25 by the plurality of first cyclones 70, improving the gas separation efficiency in the cyclone 40, and improving the recovery efficiency of the processed powder as a product. Can be improved.

  Further, according to the present embodiment, the cyclone 40 further includes the second cyclone 71 that separates the gas from the powder that has passed through the first cyclone 70. As a result, the gas separation efficiency of the cyclone 40 as a whole can be further improved, and the recovery efficiency of the processed powder as a product can be further improved.

  As mentioned above, although embodiment of this invention has been described in detail, the powder processing apparatus and powder processing equipment by this invention are not limited to the said embodiment at all, and do not deviate from the meaning of this invention. Various changes in range are possible. Moreover, as a matter of course, these embodiments can be partially combined as appropriate within the scope of the present invention.

DESCRIPTION OF SYMBOLS 1 Powder processing equipment 2 Air exhaust apparatus 3 Raw material supply apparatus 10 Control apparatus 11 2nd raw material supply apparatus 20 Powder processing apparatus 21 Processing container 23 Stator 24 Rotor 25 Process gap 40 Cyclone 43 Cyclone powder discharge port 50 Return Flow path 51 Flow path partition member 52 Blade 55 Container powder discharge port 56 Discharge port damper 57 Powder discharge pipe 59 Powder accumulation part 60 Powder recovery port 61 First recovery port damper 62 Second recovery port damper 70 First cyclone 71 Second Cyclone

Claims (13)

A processing vessel;
A supply port which is provided in the processing container and is supplied with a mixture containing powder and gas;
A cylindrical stator provided in the processing vessel;
A cylindrical rotor which is provided on the inner peripheral side of the stator and is rotatable through a processing gap through which the mixture passes with respect to the stator;
A cyclone that is provided in the processing vessel and separates and discharges the gas from the mixture that has passed through the processing gap;
A return flow path for returning the powder that has passed through the cyclone to the processing gap;
A container powder discharge port provided in the processing container for discharging the powder that has passed through the processing gap;
An outlet opening / closing valve provided in the container powder outlet ,
The cyclone has a cyclone powder outlet provided on the inner peripheral side of the rotor through which the powder flows out,
The powder processing apparatus , wherein the return channel returns the powder flowing out from the cyclone powder discharge port to the processing gap . On the side of the supply port than the previous SL rotor, the flow path dividing member is provided,
The return flow path is formed between the rotor and the flow path partition member,
The powder processing apparatus according to claim 1, wherein the flow path partitioning member partitions a supply flow path for the mixture from the supply port to the processing gap and the return flow path. .   The powder processing apparatus according to claim 2, wherein a guide member that guides the powder flowing in the return channel to the processing gap is provided in the return channel.   The powder processing apparatus according to claim 3, wherein the guide member extends in a radial direction. The processing container is formed in a cylindrical shape,
The discharge opening / closing valve includes a seat surface provided on an inner peripheral side surface of the processing container, and a valve body provided so as to be able to be separated from and connected to the inner peripheral side of the processing container with respect to the seat surface The powder processing apparatus according to any one of claims 1 to 4, wherein the powder processing apparatus is provided.   The powder processing apparatus according to claim 5, wherein a powder discharge pipe extending in a tangential direction of the processing container is connected to the container powder discharge port.   The powder processing apparatus according to any one of claims 1 to 6, further comprising a powder accumulation unit that accumulates the powder discharged from the container powder discharge port. A powder collection port for collecting the powder accumulated in the powder accumulation unit;
The powder processing apparatus according to claim 7, further comprising two recovery port opening / closing valves provided in series between the powder accumulation unit and the powder recovery port.   The powder processing apparatus according to any one of claims 1 to 8, wherein the cyclone includes a plurality of first cyclones provided in parallel to each other.   The powder processing apparatus according to claim 9, wherein the cyclone further includes a second cyclone that separates the gas from the powder that has passed through the first cyclone. The powder processing apparatus according to any one of claims 1 to 10,
A gas supply / discharge device for supplying the gas to the powder processing device and discharging the gas from the powder processing device;
A raw material supply device for supplying the powder as a raw material to the gas supplied to the powder processing device;
A powder processing facility comprising: A control device;
The control device stops supplying the powder after supplying a predetermined amount of the powder from the raw material supply device, and after a predetermined time has elapsed after stopping the supply of the powder, the outlet opening / closing valve The powder processing facility according to claim 11, wherein the raw material supply device and the outlet opening / closing valve are controlled so as to open.   The powder processing according to claim 11 or 12, further comprising a second raw material supply device that supplies, as a raw material, a second powder that is different from the powder supplied from the raw material supply device. Facility.

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