JP6029833B2 - Powder processing equipment - Google Patents

Description

  The present invention relates to a powder processing apparatus that pulverizes, disperses, dissolves, etc., an object to be processed in a liquid.

  BACKGROUND ART A wet pulverizer is widely used because it disperses an object to be pulverized in a liquid such as water and grinds it using a pulverization pin or a medium. For example, Patent Document 1 discloses a technique for preventing wear of a rotating shaft by attaching a protective member made of a hard material to the rotating shaft in a wet pulverizer provided with a stirring pin and a fixed pin provided on the rotating shaft. ing. Patent Document 2 discloses a technique for efficiently kneading a wet kneader equipped with a stirring pin and a fixed pin provided on a rotating shaft by previously mixing powder as a raw material in the middle of a flow path. Is disclosed.

Japanese Utility Model Publication No. 1-77847 Japanese Utility Model Publication No. 5-93539

  However, even if any of the above-described conventional techniques is employed, for example, when the object to be processed is a hard granulated material such as a pharmaceutical tablet, the object to be processed is not sufficiently dispersed in the liquid, Alternatively, the object to be treated is discharged without being finely pulverized, and as a result, coarse particles may be mixed in the product. Therefore, it has been necessary to carry out a fine pulverization process in advance before supplying to the wet pulverizer, or to remove coarse particles by sieving the pulverized product through a sieve or the like. However, when such a preliminary pulverization step is used, in the case of a granulated product having a high hygroscopic property, moisture in the air is absorbed during the fine pulverization process, so that the problem of being fixed again. Arise. In addition, when the granulated material containing harmful components is treated, if it is finely pulverized in the open air, the possibility of adverse effects on the human body due to the generated dust is increased, so that the treatment process without dust generation It is desirable to proceed. Furthermore, productivity increases due to an increase in the extra steps such as the preliminary pulverization step and coarse particle removal step as described above, and in addition to the reduction in the number of steps, the processing ability such as pulverization, dispersion, and dissolution of the object to be processed Providing a technique for improving productivity by increasing the amount is also an important technical issue.

  The present invention solves the above-described problem, and is a case where a granulated product or agglomerate that is hard and difficult to disperse in a liquid is supplied directly into a processing apparatus without being previously pulverized. The present invention also provides a powder processing apparatus that can sufficiently pulverize and / or mix the object to be processed. Therefore, typically, the present invention greatly contributes to the development of a processing technique in which processing for pulverizing a hard granulated product in a liquid is performed.

  As described above, it is possible to sufficiently pulverize and / or mix the object to be processed even when the granulated material or aggregate that is hard and difficult to disperse in the liquid is directly supplied to the powder processing apparatus. The study of a simple powder processing apparatus has been conducted earnestly. As a result, the inventors of the present invention specified a region for efficiently pulverizing or mixing the object to be processed (hereinafter simply referred to as pulverization or the like) and a region for feeding the pulverized object to be processed and liquid. It has been found that the above technical problem can be solved by partitioning by adopting a structure. The present invention has been created based on the above findings.

  One powder processing apparatus of the present invention is a vertical powder processing apparatus including a casing for pulverizing and / or mixing an object to be processed in a liquid. More specifically, in this powder processing apparatus, the above-described casing has a cylindrical portion in which a rotary blade and a rotor that is driven to rotate around the axial center of the casing are provided inside. And communicated with the first processing chamber, and uniformly from the cylindrical portion along the axial center, and having a smaller diameter toward the lower side, and communicated with the partition portion, A second processing chamber provided with a liquid feeding rotor for feeding the object to be treated and the liquid, a supply port communicating with the first processing chamber, and a discharge communicating with the second processing chamber. And an exit.

  In this powder processing apparatus, a bottomless cylindrical partition portion that is in communication with the first processing chamber and has a smaller diameter as it goes downward from the above-described cylindrical portion uniformly along the axis of the first processing chamber. Formed between the chamber and the second processing chamber. Therefore, the flow rate of the object to be processed and the liquid from the first processing chamber to the second processing chamber can be limited. As a result, for example, even when a granulated product or agglomerate that is hard and difficult to disperse in a liquid is supplied directly and continuously into the powder processing apparatus without being finely pulverized in advance, Thus, it is possible to ensure the residence time of the object to be processed and to sufficiently pulverize and / or mix the object to be processed. Therefore, by using this powder processing apparatus, it is possible to suppress the mixing of coarse particles in various products and to pulverize a large amount of objects to be processed, thus greatly reducing the production process and production cost. Can be achieved.

  According to one powder processing apparatus of the present invention, a granulated product or agglomerate that is hard and difficult to disperse in a liquid is directly and continuously supplied into the powder processing apparatus without being finely pulverized. Can do. As a result, mixing of coarse particles into various products can be suppressed, and a large amount of objects to be processed can be pulverized, so that the production process and production cost can be greatly reduced.

It is explanatory drawing which shows schematically the structure of the powder processing apparatus in this embodiment. It is a figure which shows the circulation area | region, the crushing / mixing area | region, the dispersion | distribution / dissolution area | region, and the liquid feeding area | region in a powder processing apparatus. It is a schematic perspective view which shows the grinding | pulverization rotor in this embodiment. It is a schematic perspective view which shows the grinding | pulverization rotor in this embodiment. It is a schematic perspective view which shows the grinding | pulverization rotor in this embodiment. It is a schematic perspective view which shows the fixed blade in this embodiment. It is a schematic perspective view which shows the fixed blade in this embodiment. It is a schematic perspective view which shows the example of the shape of the 1st screen in this embodiment. It is a figure which shows roughly the process performed by the crushing test.

Embodiments of the present invention will be described in detail with reference to the accompanying drawings. In this description, common parts are denoted by common reference symbols throughout the drawings unless otherwise specified. In the drawings, each element of each embodiment is not necessarily shown in a scale ratio. Moreover, in order to make each drawing easy to see, some reference numerals may be omitted.
<First Embodiment>

  FIG. 1 is an explanatory diagram schematically showing a configuration of a powder processing apparatus 100 in the present embodiment in a side view. FIG. 2 is a diagram showing a circulation area, a pulverization / mixing area, a dispersion / dissolution area, and a liquid feeding area, which are classified for convenience in order to describe the powder processing apparatus 100. In the powder processing apparatus 100, two regions, a circulation region and a pulverization / mixing region, form a first processing chamber, and a liquid feeding region forms a second processing chamber. The first processing chamber and the second processing chamber are separated by the dispersion / dissolution region. The powder processing apparatus 100 according to the present embodiment is a vertical wet pulverizer that receives an object to be processed together with a liquid and performs the pulverization process, the dispersion process, the dissolution process, or the like in the liquid. The powder processing apparatus 100 can perform steps such as emulsification, dispersion, mixing, pulverization, and dissolution on the supplied workpiece and liquid. In the present embodiment, for convenience of explanation, the powder processing apparatus 100 is typically described as a “pulverizer”, but this “pulverizer” is the main configuration of the powder processing apparatus 100 of the present embodiment. By providing the above, it can be an apparatus for performing the above-described emulsification, dispersion, mixing, dissolution and the like. Further, the object to be processed is a powder such as a granulated product, an aggregate, or a granular powder. In particular, the size thereof is not limited, but a typical example of the size of the object to be processed has a particle size of 10 mm or less. Moreover, the typical liquid employ | adopted by this embodiment is water, an organic solvent, or oils.

  As shown in FIG. 1, the powder processing apparatus 100 of the present embodiment mainly includes a casing 5, a rotating shaft 25, a grinding rotor 20, a liquid feeding rotor 58, a liner 10, a taper cover 11, a first screen 40, and a first screen 40. 2 screens 50.

  The casing 5 of this embodiment is a vertical type, and a gantry 6 is connected to the bottom of the casing 5. Moreover, the liner 10 is provided in the inner wall of the casing 5 as the cylindrical part 70 which forms a part of 1st process chamber. In the present embodiment, the liner 10 includes a fixed blade 30 on its inner peripheral surface. Further, below the liner 10, it is continuous with the liner 10, in other words, communicates with the first processing chamber and is uniform along the axis from the cylindrical portion 70, and has a smaller diameter as it goes downward. A taper cover 11 that forms a cylindrical partition is attached. As shown in FIG. 1, the tapered cover 11 forms a funnel-shaped space 80. In addition, the taper cover 11 can be formed by projecting a part of the casing 5 or the liner 10 toward the center of the rotary shaft 25 in addition to being configured as an independent member. In addition, the casing 5 includes an upper layer space 60 that is continuous with a space formed by the cylindrical portion 70 and a supply port 55 that supplies the object to be processed into the casing 5 together with the liquid. In addition, the casing 5 includes a discharge port 56 that discharges an object to be processed and liquid after processing such as pulverization at one end of the bottom. Furthermore, a spacer 15 is provided between the inner wall of the casing 5 and the liner 10 to adjust the distance between a rotary blade 22 of the crushing rotor 20 and a fixed blade 30 of the liner 10 which will be described later. The spacer 15 may be formed integrally with the casing 5 or the liner 10. Further, a configuration in which the spacer 15 is not provided at all can be employed. The casing 5 may include a jacket for heating or cooling the inside of the casing 5 by flowing a refrigerant or a heat medium.

  The structure in the casing 5 is desirably configured so as to eliminate welds as much as possible from the viewpoint of preventing deterioration due to corrosion. In addition, from the viewpoint of wear resistance or corrosion resistance, at least the casing 5, the liner 10, the spacer 15, the taper cover 11, the rotary blade 22, the fixed blade 30, and the liquid feeding rotor 58 that are members that come into contact with the liquid or the object to be processed. Is made of a material such as stainless steel such as SUS304 or SUS316, titanium alloy, nickel base alloy, alumina, zirconia, silicon carbide, or nitrogen carbide, or has been subjected to plating treatment such as chromium plating or zinc plating. Is desirable.

  In the processing method as an example using the powder processing apparatus 100 of the present embodiment, first, the object to be processed supplied together with the liquid from the supply port 55 rotates around the axis of the rotary blade 22 and the casing 5. The crushing rotor 20 to be driven is introduced into a cylindrical portion 70 provided inside. Then, the object to be processed is pulverized and the like (typically pulverized and / or mixed) by repeatedly receiving impacts from the fixed blade 30 and the rotating blade 22 of the pulverizing rotor 20 that is connected to the rotating shaft 25 and rotates. Is done. Therefore, in this embodiment, the rotary blade 22 and the fixed blade 30 cooperate to pulverize the workpiece. Thereafter, the pulverized object to be processed is discharged out of the powder processing apparatus 100 from the discharge port 56 by the liquid feeding rotor 58 that rotates together with the liquid.

  The powder processing apparatus 100 according to the present embodiment will be described in more detail. As shown in FIG. 2, the powder processing apparatus 100 according to the present embodiment is roughly classified into four components. Specifically, the powder processing apparatus 100 of this embodiment includes a circulation region, a pulverization / mixing region, a dispersion / dissolution region, and a liquid feeding region.

  First, one of the components is a region for mainly pulverizing and / or mixing an object to be processed shown in a region B in FIG. 2 (hereinafter, referred to as “pulverization / mixing region” for convenience). In this embodiment, the area | region in the cylindrical part 70 in the casing 5 of the powder processing apparatus 100 functions as a grinding | pulverization / mixing area | region.

  In the cylindrical portion 70 of the present embodiment, a fixed blade 30 provided in the liner 10 and a grinding rotor 20 provided with a rotary blade 22 described later in FIGS. 3 to 5 are provided. A disc-shaped first screen 40 is provided between the cylindrical portion 70 and the funnel-shaped space 80.

  First, the inside of the cylindrical portion 70 will be described. The crushing rotor 20 provided in the cylindrical part 70 crushes the introduced workpiece. Further, the grinding rotor 20 is connected to the rotary shaft 25, and the rotary blade 22 extends to the vicinity of the inner peripheral surface of the liner 10. That is, a gap is provided between the liner 10 or the fixed blade 30 and the rotary blade 22.

  In the powder processing apparatus 100 of the present embodiment, a swirl that swirls along the inner peripheral wall of the liner 10 in the cylindrical portion 70 can be formed by the rotation of the grinding rotor 20. By rotating the grinding rotor 20, a vortex flow caused by the liquid can be generated. For this reason, when the object to be processed is supplied into the casing 5 from the supply port 55, the object to be processed is pulverized by the rotary blade 22 and the fixed blade 30, and the liquid and the pulverized object to be processed are also included. A part moves upward along the inner wall of the liner 10 and the casing 5 by the vortex. That is, the pulverized object to be processed is further pulverized by collision with the rotary blade 22, the fixed blade 30, and the liner 10 while being repeatedly raised and lowered by the vortex.

  Moreover, the grinding | pulverization rotor 20 is exchangeable according to the objectives, such as emulsification, dispersion | distribution, mixing, grinding | pulverization, and melt | dissolution as above-mentioned, and is not limited to a specific shape. Examples of the rotary blade 22 of the representative grinding rotor 20 include a round bar rotor type, an oblique blade type, and an uneven disk type. Moreover, the specific dimension of the grinding | pulverization rotor 20 is not specifically limited, According to the application place, an aspect, etc., it can adjust suitably.

  As shown in FIG. 1, the rotation shaft 25 is provided along the axial direction of the cylindrical portion 70. The rotating shaft 25 is arranged coaxially with the casing 5 and one end thereof is connected to an output shaft of a motor (not shown) provided at the upper portion. Further, the rotating shaft 25 is provided with a crushing rotor 20. The speed of the rotary shaft 25 of the present embodiment is not particularly limited, but from the viewpoint of preventing liquid from entering the joint portion of the rotary shaft 25, the tip peripheral speed of the rotary blade 22 of the grinding rotor 20 is 60 m / s. The following rotation speed is desirable.

  3 to 5 are schematic perspective views illustrating examples of the shape of the grinding rotor 20 of the present embodiment. FIG. 3 is a schematic perspective view showing the round bar two-stage rotor 20a in the present embodiment. The round bar two-stage rotor 20 a includes a cylindrical outer cylinder 21 as a rotary blade 22 and a plurality of two-stage pin-shaped round bar rotary blades 22 a provided on the outer peripheral surface of the outer cylinder 21. In addition, a key groove 24 for fixing to the rotating shaft 25 is provided in the central through hole 23 of the outer cylinder 21. In addition, the diameter and the number of the round bar type rotary blades 22a can be appropriately changed. For example, when the diameter of the round bar type rotary blade 22a is increased, the grinding ability of the workpiece is improved. However, since the load of the power source of the rotary shaft 25 is increased, the diameter of the round bar type rotary blade 22a is set according to the use mode. Will be determined accordingly. 3 shows an example in which the round bar type rotary blade 22a has two stages, the number of stages of the round bar type rotary blade 22a is not limited to two stages. For example, the round bar type rotary blade 22a may be provided with only one stage, or may be provided with three or more stages in consideration of the load of the power source of the rotary shaft 25. In addition, in the case where a plurality of round bar type rotary blades 22a are provided, when the grinding rotor 20 is viewed from above, the (N + 1) th stage between the round bar type rotary blades 22a adjacent to the Nth stage. The N-th stage and the (N + 1) -th stage round bar-type rotary blade 22a may be shifted from each other so that the round bar-type rotary blade 22a is arranged.

  FIG. 4 is a schematic perspective view showing the oblique blade type rotor 20b in the present embodiment. The oblique blade-type rotor 20 b includes a plurality of blade-type rotary blades 22 b that are inclined at regular intervals around the outer periphery of a cylindrical outer cylinder 121 as the rotary blade 22. In addition, a key groove 124 for fixing to the rotary shaft 25 is provided in the central through hole 123 of the outer cylinder 121. The oblique blade-type rotor 20b is attached to the rotation shaft 25 in such a direction as to feed the workpiece and the liquid to the bottom space 90 in consideration of the rotation direction of the rotation shaft 25 and the angle of the blade-type rotation blade 22b. Note that the angle and the number of blade-type rotary blades 22b can be changed as appropriate. For example, setting the angle of the blade-type rotary blades 22b to 20 ° or more and 50 ° or less means that the processing object and liquid crushing / mixing region and It is preferable for obtaining a suitable residence time in the circulation region described later.

  FIG. 5 is a schematic perspective view showing the concavo-convex disk type rotor 20c in the present embodiment. The concave-convex disk-type rotor 20 c includes a plurality of convex convex rotary blades 22 c in the circumferential direction of the outer peripheral portion of the convex cylindrical outer cylinder 221 as the rotary blade 22. The convex rotary blade 22c is divided by concave portions (groove portions) 225 provided at a plurality of locations in the circumferential direction. A through hole 223 having a key groove 224 for fixing to the rotating shaft 25 is provided at the center of the outer cylinder 221. As shown in FIG. 5, the side wall of the recess 225 is formed perpendicular to the convex rotary blade 22c, but the side wall of the recess 225 is not limited to this shape. For example, the side wall of the concave portion 225 may be inclined with respect to the convex rotary blade 22c, or the bottom surface of the concave portion 225 may have a curved shape that is not flat. The shape, size, and number of the convex rotary blade 22c can be changed as appropriate.

  In addition to the round bar type rotary blade 22a, the blade type rotary blade 22b, and the convex type rotary blade 22c described above, the rotary blade 22 is an elliptical or prismatic pin (not shown) or a cylindrical outer cylinder. It can also be set as the rotary blade (illustration omitted) which provided the several uneven | corrugated groove | channel on the outer peripheral surface. Further, the rotary blade 22 can be directly formed on the rotary shaft 25, and the rotary shaft 25 can also serve as the grinding rotor 20.

  Next, FIGS. 6 to 7 are schematic views illustrating specific examples of the shape of the fixed blade 30 of the present embodiment. By providing the fixed blade 30, the object to be processed is more easily pulverized.

  The shape of the fixed blade 30 is not particularly limited, but typical examples of the shape of the fixed blade 30 include a round bar shape and a convex shape as described later. In addition, the specific dimension of these fixed blades 30 is not specifically limited, It can adjust suitably according to the application place, aspect, etc. Note that the fixed blade 30 may not be provided depending on the type of the object to be processed.

  FIG. 6 is a schematic perspective view showing the round bar type fixed blade 30 in the present embodiment. The round bar type fixed blade 30 includes a round bar type fixed blade 30 a that is a plurality of pin-shaped fixed blades provided on the inner peripheral surface of the liner 10. A key groove 34 for fixing to the spacer 15 is provided on the side surface of the liner 10. The diameter and number of the round bar type fixed blades 30a can be changed as appropriate, and the round bar type fixed blades 30a can be provided in two or more stages. In the case where a plurality of round bar type fixed blades 30a are provided, when the liner 10 is viewed from above, the (N + 1) th round bar type is disposed between the N stage adjacent round bar type fixed blades 30a. The N-th stage and the (N + 1) -stage round bar type fixed blades 30a may be shifted from each other so that the fixed blades 30a are arranged.

  FIG. 7 is a schematic perspective view showing the ridge-shaped fixed blade 30b in the present embodiment. The convex fixed blade 30b includes a convex fixed blade 30b having a plurality of triangular cross sections on the inner peripheral surface of the liner 10. Further, a key groove 134 for fixing to the spacer 15 is provided on the side surface of the liner 10. The height, number, and shape of the convex fixed blade 30b can be changed as appropriate.

  As described above, combinations of the rotary blade 22 and the fixed blade 30 having various shapes can be employed. For example, it is another aspect to employ a combination of a round bar two-stage rotor 20a and a ridge type fixed blade 30b, a combination of a round bar two-stage rotor 20a and a round bar type fixed blade 30a, or the like. . Further, the rotary blade 22 and the fixed blade 30 can be provided in a plurality of stages in the axial direction of the rotary shaft 25. In addition, what is necessary is just to set the pitch which installs the rotary blade 22 and the fixed blade 30 according to particle sizes, such as a granular form or a granulated material, and it is preferable to make the pitch smaller than the magnitude | size of a to-be-processed object. Further, like the combination of the round bar two-stage rotor 20a and the round bar type fixed blade 30a, a pin-shaped blade is used for the rotary blade 22 and the fixed blade 30, and at least one of the rotary blade 22 and the fixed blade 30 is used. Providing a plurality of stages on one side is another aspect that can be adopted. In this case, as shown in FIG. 1, the fixed blade 30 is alternately arranged with the rotary blade 22 and the fixed blade 30 spaced apart in the axial direction in a side view in relation to the rotary blade 22. It is desirable that they are arranged in a comb shape. Thus, by arranging in a comb-teeth shape, the probability that the object to be processed will collide with the rotary blade 22 and the fixed blade 30 increases, so that the object to be processed is more easily crushed and the processing capacity is improved. be able to.

  Next, the second component part is an area where the object to be crushed or the like, which is mainly pulverized, is dispersed / dissolved in the liquid shown in area C of FIG. 2 (hereinafter referred to as “dispersion / dissolution area” for convenience). is there. The third component part is an area (hereinafter, referred to as a “liquid feeding area” for the sake of convenience) in which mainly the object to be processed and the liquid are fed, which are indicated by the area D. In the present embodiment, the lower end of the funnel-shaped space 80 of the powder processing apparatus 100. To the bottom space 90 functions as a liquid feeding region. In other words, the taper cover 11 forming the partition part separates the workpiece and the liquid feeding area for feeding the liquid from the circulation area, the pulverizing / mixing area, and the dispersing / dissolving area.

  The funnel-shaped space 80 formed by the inclined surface of the taper cover 11 of the present embodiment has a funnel-shaped shape with a smaller diameter toward the lower side. The funnel-shaped space 80 is continuous downward in the axial direction of the space so as to be coaxial with the space formed by the cylindrical portion 70. Here, in this embodiment, since the funnel-shaped space 80 has a funnel-shaped shape with a smaller diameter toward the tip side, the flow rate of liquid fed to the bottom space 90 described later is limited. As a result, the residence time of the object to be processed in the circulation region, the pulverizing / mixing region, and the dispersing / dissolving region can be increased, and the object to be processed is further pulverized. Further, relatively large particles of the pulverized block-like or granular object (hereinafter also simply referred to as “particles”) are placed on the inclined surface of the taper cover 11 that forms a funnel-like space 80 on the swirl. It rises along, and the outflow from the funnel-shaped space 80 to the bottom space 90 is stopped, and during that time, it undergoes a dispersing and dissolving action again. Therefore, the residence time for dispersing or dissolving in the liquid can be made longer.

From the viewpoint of enabling relatively large particles of the pulverized object to be processed to rise smoothly along the inclined surface of the taper cover 11 that forms the funnel-shaped space 80, the side surface inclination angle of the partition portion That is, the inclination angle of the inclined portion 11b of the taper cover 11 forming the funnel-shaped space 80 is formed so that the depression angle is 5 ° or more and 60 ° or less with respect to the horizontal plane when viewed from the upper end of the funnel-shaped space 80. It is preferable to do. If the angle is steeper than the range of these angles, the residence time of the object to be processed cannot be sufficiently obtained. On the other hand, if it is slower than the range of these angles, the residence time becomes too long and the processing speed of the object to be processed is reduced. From the above viewpoint, it can be said that the most preferable aspect is that the inclination angle of the inclined portion 11b of the taper cover 11 forming the funnel-shaped space 80 is about 30 °. Moreover, in this embodiment, although the front-end | tip part 11a of the taper cover 11 which forms the funnel-shaped space 80 is formed in the curved surface shape , you may refract it at acute angle shape. However, from the viewpoint of realizing smoother fluid movement, it is preferable that the tip end portion 11a of the tapered cover 11 forming the funnel-shaped space 80 is formed in a curved shape .

  The bottom space 90 of the present embodiment is continuous downward in the axial direction of the funnel-shaped space 80 so as to be coaxial with the cylindrical portion 70 and the funnel-shaped space 80. The bottom space 90 includes a liquid feeding rotor 58 and a discharge port 56.

  Further, the liquid feeding rotor 58 of the present embodiment feeds the object to be processed and the liquid crushed toward the discharge port 56 toward the discharge port 56. By rotating the liquid feeding rotor 58, the discharge amount is adjusted, and a flow for efficiently discharging the processing object and the liquid crushed or the like is created. A known shape can be used for the liquid feeding rotor 58. It is desirable that the liquid supply blades of the liquid supply rotor 58 are formed from the inner side in the center of the rotary shaft 25 than the lower opening of the taper cover 11. Due to the swirling current swirling along the inner peripheral wall of the taper cover 11 generated by the rotation of the grinding rotor 20, the workpiece having a relatively large particle diameter rises along the wall surface of the taper cover 11 forming the funnel-shaped space 80. It becomes easy to do. On the other hand, the object to be processed having a fine particle diameter is forced to flow downward by the liquid feeding rotor 58.

  In this embodiment, the liquid feeding rotor 58 is attached to the same rotary shaft 25 as the grinding rotor 20, but it is not always necessary to attach the same to the same rotary shaft 25. For example, a rotating shaft different from the rotating shaft 25 may be attached to the casing 5 from below, and the liquid feeding rotor 58 may be attached to the rotating shaft. By adopting such a configuration, it is possible to independently change the rotation speed and rotation direction of the grinding rotor 20 and the liquid feeding rotor 58. Generally, when the rotational speed of the liquid feeding rotor 58 becomes slow, the discharge amount of the object to be processed and the liquid decreases. Therefore, the residence time of the object to be processed can be adjusted also by adjusting the rotation speed of the liquid feeding rotor 58.

Moreover, the discharge port 56 of this embodiment discharges the to-be-processed object and liquid which were crushed. The object to be processed crushed by the rotary blade 22 and the fixed blade 30 is discharged from the discharge port 56 in a state of being dispersed, dissolved, or mixed with the liquid or mixed with the liquid. As described above, if the configuration of the powder processing apparatus 100 of the present embodiment is employed, the object to be processed is continuously supplied from the supply port 55 provided at the upper part of the casing 5 and provided at the lower part of the casing 5. It is worthy of special mention that continuous operation is possible by continuously taking out from the discharge port 56.

  Note that the first screen 40 and the second screen 50 of the present embodiment are employed from the viewpoint of further reducing the variation in the particle diameter of the workpiece to be finally obtained. The first screen 40 and the second screen 50 are used to pass through a solid material pulverized to a desired size and can be installed as necessary. As shown in FIG. 1, in the present embodiment, a disc-shaped first screen 40 is provided between the grinding rotor 20 and the funnel-shaped space 80. A cylindrical second screen 50 is provided near the liquid feeding rotor 58 in the bottom space 90.

  By providing the first screen 40 between the cylindrical portion 70 and the funnel-shaped space 80, the time during which the pulverized object to be treated stays in the cylindrical portion 70, which is the pulverization / mixing region, is more accurate. Can be adjusted. Specifically, the processing object is repeatedly pulverized by the rotary blade 22 and the fixed blade 30 in the cylindrical portion 70, and eventually descends from the opening of the first screen 40 toward the funnel-shaped space 80. Then, the liquid is ejected by the liquid feeding rotor 58. Accordingly, when the opening area of the first screen 40 is increased, the object to be processed passes immediately, and the residence time of the object to be processed is shortened. As a result, the number of impacts received from the rotary blade 22 and the fixed blade 30 is reduced, and the particle size of the pulverized workpiece to be obtained is also relatively large. Moreover, it is preferable that the 1st screen 40 and the 2nd screen 50 employ | adopt the shape which reduces the resistance of water as much as possible.

  FIG. 8 is a schematic perspective view showing an example of the shape of the first screen 40 in the present embodiment. As shown in FIG. 8, the disc-shaped first screen 40 includes a rim portion 41 and a filter portion 45. In addition, an insertion hole 46 that is fitted into the rotation shaft 25 is formed at the center of the filter portion 45. The filter part 45 is provided with openings 42 and 44 and a protrusion 43 on the surface facing the grinding rotor 20. More specifically, a plurality of openings 42 that form elongated hole-shaped recesses in the X-axis direction are formed at regular intervals in portions corresponding to the first quadrant and the third quadrant of the Cartesian coordinate system in the filter unit 45. The protrusions 43 are formed at equal intervals between the openings 42. In addition, a plurality of openings 44 that form elongated hole-shaped recessed portions in the Y-axis direction are formed at regular intervals in portions corresponding to the second quadrant and the fourth quadrant of the Cartesian coordinate system in the filter portion 45, 43 are formed at equal intervals between the openings 44.

  Since the first screen 40 includes the plurality of protrusions 43, the object to be crushed is pressed against the protrusions 43 of the first screen 40 by the pulverization rotor 20, so that the pulverization can proceed more easily. Become. The rim portion 41 includes a plurality of bolt holes 47 that are holes through which bolts for fixing the first screen 40 and the liner 10 pass. In addition, the installation of the protrusion 43 of the first screen 40 is arbitrary. Therefore, only the openings 42 and 44 may be provided on the surface of the first screen 40.

  Further, the second screen 50 of the present embodiment is disposed coaxially with the bottom space 90. The cylindrical second screen 50 includes a plurality of openings such as a long hole shape and a round hole shape around the cylindrical wall. By providing the second screen 50 in the vicinity of the discharge port 56 provided in the bottom space 90, the time during which the pulverized object to be processed stays in the bottom space 90 which is a part of the liquid feeding region is adjusted. . As a result, the time during which the object to be treated stays in the bottom space 90 becomes longer, so that the powder processing apparatus 100 in the present embodiment improves the dispersion and / or dissolution ability of the object to be treated that has been crushed. Is possible. Moreover, the 1st screen 40 and the 2nd screen 50 are other one aspects which can also employ | adopt changing the magnitude | size of an opening part. For example, by reducing the size of the opening of the second screen 50 close to the discharge port 56 as compared with the opening of the first screen 40, the dispersion and / or dissolution ability of the pulverized workpiece is further improved. be able to.

  Further, the shapes of the first screen 40 and the second screen 50 are not particularly limited. Moreover, the specific dimension of the 1st screen 40 and the 2nd screen 50 is not specifically limited, It can adjust suitably according to the application place, an aspect, etc. Furthermore, the shape of the openings in the first screen 40 and the second screen 50 can be various shapes such as a long hole shape, a round hole shape, a square hole shape, and the size, number, and arrangement of the openings. The pattern and size can be changed as appropriate.

  The fourth component part is an area in which the mainly pulverized material shown in area A in FIG. 2 is dispersed and / or dissolved while circulating in the liquid (hereinafter referred to as “circulation area” for convenience). ). In the present embodiment, the upper space 60 of the powder processing apparatus 100 functions as a circulation region.

  In the upper layer space 60 of the present embodiment, a supply port 55 for supplying an object to be processed and a liquid is provided. The shape of the upper layer space 60 is not particularly limited. As described above, the upper layer space 60 is dispersed and / or dispersed while circulating the object to be crushed by the fixed blade 30 and the rotary blade 22. Since it is an area | region to melt | dissolve, it is desirable for the to-be-processed object pulverized etc. to be a shape which raises easily. In the present embodiment, the boundary portion 60a between the bottom surface portion and the side surface portion of the upper layer space 60 includes a corner portion, but is not limited to this shape. For example, the boundary portion 60a being formed in a curved surface is a preferable aspect that can be adopted because the pulverized workpiece is more likely to rise.

  The upper layer space 60 also functions as a buffer area for temporarily storing the supplied workpiece and liquid. That is, even if an amount of the processing object and liquid more than the amount that can be processed in the pulverization / mixing area is supplied, an excessive amount of the processing object and liquid in the upper space 60 provided above the pulverization / mixing area. Processing such as pulverization is sequentially performed in the pulverization / mixing region while temporarily storing and circulating. Therefore, it becomes possible to continuously supply a large amount of the object to be processed and the liquid to the powder processing apparatus 100, and the productivity is improved.

  Further, as shown in FIG. 1, the supply port 55 of the present embodiment supplies an object to be processed and a liquid into the casing 5 from obliquely upward to obliquely downward. The supply port 55 smoothly supplies the object to be processed into the casing 5 and makes it easy to install a liquid tank joined to the supply port 55 with an inclination angle of 10 ° or more with respect to the horizontal plane. It is preferable to form it so that it is less than 0 °. From the above viewpoints, it is most preferable to install the projector so that the inclination angle is about 20 ° with respect to the horizontal plane.

  As described above, in the powder processing apparatus 100 according to the present embodiment, the circulation region, the pulverization / mixing region, the dispersion / dissolution region, and the liquid feeding region are partitioned in the casing 5. Accordingly, for example, the processed material is directly supplied into the pulverizer without finely pulverizing a hard granulated material (generally hardness 40N to 100N) or agglomerate such as a tablet used as a pharmaceutical product. Even in this case, it is possible to ensure sufficient residence time in the circulation region, pulverization / mixing region and dispersion / dissolution region of the object to be sufficiently pulverized and / or mixed. As a result, by using the powder processing apparatus 100 of the present embodiment, it is possible to suppress the mixing of coarse particles into the product and to pulverize a large amount of objects to be processed, greatly increasing the production process and production cost. Can be reduced.

<Example>
Hereinafter, examples will be described in order to describe the above-described embodiment in more detail. However, the above-described embodiment is not limited to these examples. Below, the result of having performed the crushing test of the to-be-processed object using the powder processing apparatus 100 is shown.

  First, the specific steps performed in the crushing test are as follows. FIG. 9 is a diagram schematically showing a process performed in the crushing test. The object to be treated in this example is a lactose granulated product (particle size: about 10 mm). Further, the inner diameter of the liner 10 was set to 120 mm. The inclination angle of the taper cover 11 was set to 30 °. The grinding rotor 20 is an eight round bar (φ115 mm) two-stage type (described in FIG. 3). The fixed blade 30 is an eight round bar (35 mm in length) one-stage type (described in FIG. 6). The first screen 40 is a disk-shaped screen (described in FIG. 6) having an elongated hole-shaped opening (3 mm in short diameter) and a protrusion (3 mm × 3 mm × 3 mm). The second screen 50 is a disk-shaped screen having an elongated hole-shaped opening (short diameter: 3 mm). Further, the material of the grinding rotor, fixed blade, and screen is SUS304. Moreover, the tip peripheral speed of the round bar which is the rotary blade 22 of the grinding rotor 20 was set to about 22 m / s (rotation speed 3600 rpm).

  As shown in FIG. 9, first, the lactose granulated product and tap water were supplied into the powder processing apparatus 100 from the supply port 55. Specifically, tap water was supplied from the liquid tank 210 to the powder processing apparatus 100 at 4500 kg / h under the control of the flow meter 230 using the pump 220. Moreover, the lactose granulated product which is a to-be-processed object was supplied to the powder processing apparatus 100 from the to-be-processed object supply machine 240 at 1000 kg / h.

  The object to be processed supplied together with the liquid was pulverized by the fixed blade 30 and the rotating crushing rotor 20, and the object to be processed was discharged from the powder processing apparatus 100 together with tap water. The discharge amount from the discharge port 56 was 5500 kg / h under the control of the flow meter 250. Moreover, the driving power was 9 kW on the conditions of the present Example.

  By collecting the discharged processed material and tap water in the collection tank 260, the crushing ability of the present embodiment was evaluated by the mass ratio on the sieve. Specifically, the collected object to be treated and tap water are sieved using a 0.84 mm sieve, and the value obtained by measuring the mass of the pulverized material remaining on the sieve is treated with powder. The mass ratio (%) was determined by dividing by the mass of the object to be processed supplied to the apparatus 100. As a result, the mass ratio on the 0.84 mm sieve was a good result of 10 mass%.

  From the above results, the powder processing apparatus 100 of the present embodiment is impossible in the past even under the condition that the liquid supply rate is 4500 kg / h and the lactose granulated product supply rate is 1000 kg / h. It became clear that it was possible to pulverize and disperse a large amount of hard workpieces without pulverizing them in advance.

  As described above, according to the powder processing apparatus in the present embodiment, even if the object to be processed is made of a hard granulated material, emulsification, dispersion, mixing, pulverization, dissolution, etc., without performing fine pulverization in advance. A process is possible. Further, a large amount of processing can be performed by using the powder processing apparatus according to the present embodiment. Therefore, it greatly contributes to the provision of a powder processing apparatus excellent in productivity and industrial property.

<Other embodiments>
In the above-described embodiment, the crushing rotor is provided on the rotary shaft arranged coaxially with the casing in the axial direction of the cylindrical portion, and the fixed blade is provided on the liner provided on the inner wall of the casing. The aspect of a rotor and a fixed blade is not limited to those aspects. For example, it is another aspect that can be adopted that a fixed blade is provided in the shaft core portion of the cylindrical portion, and a crushing rotor is provided in a rotary cylinder provided along the inner peripheral surface of the cylindrical portion.

  As described above, the disclosure of each of the embodiments described above is described for explaining the embodiments, and is not described for limiting the present invention. In addition, modifications within the scope of the present invention including other combinations of the embodiments are also included in the claims.

5 Casing 6 Base 10 Liner 11 Taper cover (partition)
11a Tip portion 11b Inclined portion 15 Spacer 20 Grinding rotor 20a Round rod two-stage rotor 20b Oblique blade rotor 20c Concave disk rotor 22 Rotary blade 22a Round rod rotary blade 22b Blade rotary blade 22c Convex rotary blade 21, 31 , 221 Outer cylinder 23, 123, 223 Through hole 24, 34, 124, 134, 234 Key groove 25 Rotating shaft 30 Fixed blade 30a Round bar fixed blade 30b Convex fixed blade 40 First screen 41 Rim part 42, 44 Opening portion 43 Projection portion 44 Opening portion 45 Filter portion 46 Insertion hole 47 Bolt hole 50 Second screen 55 Supply port 56 Discharge port 58 Liquid feeding rotor 60 Upper space 60a Boundary portion 70 Cylindrical portion 80 Funnel-shaped space 90 Bottom space 100 Powder Processing device 122 Blade 123 Through-hole 131 Outer cylinder 132 Projection 220 Port Flop 222 cutting edge 225 recess 230 flow meter 240 treatment object feeder 250 flow meter 260 recovery tank

Claims (6)

A vertical powder processing apparatus including a casing for pulverizing and / or mixing an object to be processed in a liquid,
The casing is
A first processing chamber having a cylindrical portion in which a rotary blade and a rotor that rotates around the axis of the casing are provided; and
A bottomless cylindrical partition formed by a funnel-shaped inclined surface that communicates with the first processing chamber and uniformly decreases along the axis from the cylindrical portion toward the lower side ;
A second processing chamber that communicates with the partition and is provided with a liquid feeding rotor for feeding the object to be processed and the liquid;
A supply port communicating with the first processing chamber;
A discharge port communicating with the second processing chamber,
Said first processing chamber is positioned above the cylindrical portion, further Bei give a recirculation zone to disperse and / or dissolve under the ground the object to be treated is circulated in the liquid, and
The inclined surface is set to a depression angle of 5 ° or more and 60 ° or less with respect to a horizontal plane when viewed from the upper end of the partition part.
Powder processing equipment. A screen is further provided between the rotor and the partitioning portion to allow the object to be processed and the liquid crushed to a desired size to pass through and screen.
The powder processing apparatus according to claim 1. A fixed blade for crushing and / or mixing the object to be processed in cooperation with the rotary blade is further provided inside the cylindrical portion.
The powder processing apparatus of Claim 1 or Claim 2 . The rotary blade and the fixed blade are both configured using a pin, and the rotary blade and the fixed blade are arranged so as to be alternately arranged in the axial direction.
The powder processing apparatus according to claim 3 . The circulation region temporarily stores the object to be processed and the liquid supplied from the supply port.
The powder processing apparatus of any one of Claim 1 thru | or 4 . A boundary region between the bottom surface portion of the circulation region in the casing and the side surface portion of the casing that is continuous with the supply port for supplying the object to be processed and the liquid from obliquely upward to obliquely downward is curved. is there,
The powder processing apparatus of any one of Claim 1 thru | or 4 .

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