JP2000117082A - Powder treating device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a powder treating device capable of improving the treating efficiency of a material to be treated. SOLUTION: This powder treating device is provided with a cylindrical rotor 4, which has a receiving surface 7 vertically erected on the bottom 4b and the periphery of the bottom 4b and is driven and freely rotated around the rotary axis along the vertical direction, and an inner piece 5 attached on a supporting pestle hung from the upper side to the inside of the cylindrical rotor 4, disposed inside the cylindrical rotor 4 to be adjacent to the receiving surface 7 and acting on the material 1 to be treated with the rotation of the cylindrical rotor 4, and a deposition preventing means S for preventing the deposition of the material 1 to be treated is disposed at the center part of the bottom 4b.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION The present invention relates to a cylindrical rotating body having a bottom and a receiving surface erected on the periphery of the bottom, and rotatable about a rotational axis along a vertical direction. It is provided on a support rod that is suspended from above with respect to the inside of the cylindrical rotator, and is disposed inside the cylindrical rotator so as to be close to the receiving surface. The present invention also relates to a powder processing apparatus including an inner piece acting on the object.

[0002]

2. Description of the Related Art In the above-mentioned conventional powder processing apparatus, an object to be processed such as powder to be ground or a plurality of kinds of powder to be mixed is charged into the cylindrical rotary body. By rotating the cylindrical rotating body relative to the inner piece, the object to be processed is agitated, crushed, and mixed, or combined and controlled in shape. Of these, in particular, compounding means applying a pressing force and shearing force to a mixture of multiple raw materials to fuse other raw materials on the surface of a specific raw material,
Refers to integration. Also, the shape control is, for example,
By applying a pressing force or a shearing force to a plurality of raw materials, other raw materials are attached to the surface of a specific raw material having no spherical shape,
In addition to shaping the specific raw material into a sphere, it also refers to shaping a part of the raw material having no sphere by applying a pressure or the like to the raw material having no sphere and shaping the raw material into a sphere. When these processes are performed, the external force acting on the workpiece is generated mainly by the driving rotation of the cylindrical rotating body.

[0003]

However, when the powder is agitated, crushed, and mixed using a conventional powder processing apparatus, the effect of the centrifugal force is reduced near the center of the cylindrical rotating body. . Therefore, the powder to be processed is more likely to be deposited near the center. As a result, the external force does not act on the deposited workpiece, and the workpiece remains untreated, resulting in inconveniences such as non-uniform product quality and poor material yield. I was An object of the present invention is to provide a powder processing apparatus which can solve the above-mentioned conventional problems and can improve the processing efficiency of an object to be processed.

[0004]

Means for Solving the Problem [Configuration 1] The powder processing apparatus according to the present invention is provided with a deposition preventing means S for preventing deposition of the processing object 1 at a central portion of the bottom 4b. Can be configured. [Operation and Effect] As in the present configuration, the prevention of the accumulation of the object to be processed at the substantially central portion of the bottom portion is achieved by the unprocessed object remaining without being subjected to an external force based on the driving rotation of the cylindrical rotating body. The ratio of objects can be reduced. This means
That is, the processing efficiency of the object to be processed is improved, the quality of the obtained product can be homogenized, and the yield of the material can be improved.

According to a second aspect of the present invention, in the powder processing apparatus of the present invention, the deposition is performed by a substantially conical projection S1 provided on the bottom 4b so as to be coaxial with the rotation axis X. The prevention means S can be configured. [Function and Effect] As in the present configuration, if a substantially conical projecting portion is provided at a substantially central portion of the cylindrical rotating body, the object to be processed cannot be deposited near the central portion of the bottom portion. Centrifugal force can be applied to all the objects to be processed. As a result, the object to be processed is almost certainly moved toward the receiving surface, and a process such as stirring, crushing, and mixing is performed by receiving an external force from the receiving surface or the inner piece.

Further, in the inside of the cylindrical rotating body, the workpiece to which the external force is applied by the receiving surface or the inner piece scatters inside the cylindrical rotating body, and returns to the central portion of the cylindrical rotating body. It is conceivable that it will fall toward you. In this case, if a substantially conical projection is provided as in the present configuration, the workpiece to be dropped collides with the inclined surface of the projection and is pushed out toward the receiving surface. As a result, a strong external force acts on the object again, and the processing of the object is promoted.

[Structure 3] In the powder processing apparatus according to the present invention, the accumulation preventing means S is constituted by a plate-like member S2 provided so as to protrude substantially at the center of the bottom 4b. Can be. [Function and Effect] As in the present configuration, if a plate-like member is provided so as to protrude substantially at the center of the bottom, the plate-like member also rotates together with the cylindrical rotating body. Therefore, the airflow around the plate-like member is disturbed, and it is possible to prevent the object to be scattered inside the cylindrical rotating body from falling to the bottom and trying to accumulate. In addition, an effect that the plate-shaped member projects the object to be deposited outward can be expected, and the object to be processed can be prevented from being deposited at the center of the bottom.

[Structure 4] In the powder processing apparatus of the present invention, the accumulation preventing means S may be constituted by an air supply mechanism S3 for supplying air to a substantially central portion of the bottom portion 4b. it can. [Operation and Effect] By providing the air supply mechanism of this configuration, the processing object deposited on the bottom can be more positively and reliably removed. Such an air supply mechanism may be provided with an air injection port on the upper surface of the bottom, or may be provided with an air injection port on the support rod. In any case, any configuration can be adopted as long as the air flow can be jetted to the vicinity of substantially the center of the bottom.

Note that, as described above, reference numerals are provided for convenience of comparison with the drawings, but the present invention is not limited to the configuration shown in the accompanying drawings.

[0010]

Embodiments of the present invention will be described below with reference to the drawings. In the drawings, portions denoted by the same reference numerals as those of the conventional example indicate the same or corresponding portions.

(Summary) The powder processing apparatus of the present invention is, for example, an apparatus for stirring, pulverizing, or mixing an object to be processed 1, and for integrating particles of the object to be processed 1 with each other. It can be configured as various devices such as a device that performs the above-described compounding process of integrating the components. In the present embodiment, an example is shown in which the apparatus is mainly configured as an apparatus for performing compounding.

The powder processing apparatus mainly includes a substantially cylindrical casing 3 installed on a base 2, and a substantially cylindrical cylindrical rotating body 4 provided inside the casing 3.
It comprises an inner piece 5 and a scraper 6 disposed inside the cylindrical rotary member 4 to generate a pressing force between the cylindrical rotary member 4 and process the workpiece 1. The material to be treated 1 is usually a powdery raw material, but a slurry-like or suspension-like raw material can also be used. By rotating the cylindrical rotating body 4, the receiving surface 7 formed on the inner peripheral surface of the cylindrical rotating body 4 and the inner piece 5 are relatively rotated, and the rotation of the receiving surface 7 and the inner piece 5 A pressing force is applied to the object 1 existing in the pressing space 8 between the pressing spaces 8 to perform a compounding process on the powder. Incidentally, the compounding in the present invention, more specifically, by giving a certain kind of mechanical energy to powder of different materials, a strong surface fusion between particles by mechanochemical reaction on the particle surface. This is a technology that creates a new composite material with new physical properties.

(Casing) The casing 3 constituting the present apparatus is supported by a supporting member 9 mounted and fixed on the base 2. An object 1 to be processed is provided inside the casing 3.
Is formed. The casing 3 includes a casing body 3a and a lid 3b.
The lid 3b is detachable from the casing main body 3a, and has a workpiece inlet 11 and an exhaust port 12 with a filter. A workpiece outlet 13 for removing the processed workpiece 1 is formed in a part of the bottom peripheral edge of the casing body 3a. With these configurations, it is possible to continuously process the workpiece 1.

The atmosphere inside the casing 3, that is, the atmosphere in the processing space 10 can be appropriately changed according to the type of the workpiece 1 and the like. For example, various gases such as an inert gas and a heated gas can be introduced into the inside of the casing 3 from the treatment object introduction port 11, and the inside of the casing 3 is pressurized and depressurized using a pressurization / vacuum pump or the like. It is also possible.

The periphery of the casing 3 and the lid 3
b has a jacket 14 mainly for adjusting the temperature of the processing space 10. A heating medium or a cooling medium from a tank (not shown) is circulated and supplied to the jacket 14 as needed. Of course, when it is not necessary to positively adjust the internal temperature of the casing 3, the supply of the heating medium or the like is not performed.

(Cylinder Rotator) As shown in FIG. 1, a cylindrical rotor 4 having a substantially cylindrical shape and rotatable around a vertical rotation axis X is provided inside the casing 3. I have. The cylindrical rotating body 4 includes, for example, a rotating shaft 4a, a bottom 4b connected to the rotating shaft 4a, and the bottom 4b.
And a cylindrical wall portion 4c connected to the cylindrical portion.

The rotating shaft 4a is rotatably mounted on the base 2 via a bearing 15. A driving force is transmitted to a pulley 17b provided at an end of the rotating shaft portion 4a by a motor 16 attached to the base 2 and a driving belt 17a connected to the motor 16, so that the cylindrical rotating body 4 is moved. It is driven to rotate. By rotating and driving the cylindrical rotary body 4, a centrifugal force acts on the processing target 1, and the processing target 1 is pressed against the receiving surface 7 of the cylindrical rotary body 4.

The bottom 4b has a function of placing and holding the object 1 to be processed and a function of connecting the rotary shaft 4a and the cylindrical wall 4c. However, in the vicinity of the center of the bottom 4b, the workpiece 1 is not placed and held as much as possible as described later.

The receiving surface 7 is formed upright with respect to the peripheral edge of the bottom portion 4b, and the object 1 to be moved outward by centrifugal force is pressed against it. That is, the workpiece 1 is kept in the pressing space 8,
The receiving surface 7 and the inner piece 5 cooperate with each other to apply a pressing force to the object 1 to perform compounding or spheroidizing of the powder. As shown in FIG. 1, the receiving surface 7 is inclined so as to spread outward toward the upper side. This alleviates the tendency that the object 1 pressed against the receiving surface 7 tends to accumulate below the receiving surface 7 due to gravity.
This is for forming one layer of the processing object having a uniform thickness on the whole. The cylindrical wall 4c has a hole 18 as shown in FIG.
Is provided. The holes 18 penetrate the receiving surface 7, that is, the cylindrical wall 4c, and are provided at two symmetrical positions with respect to the rotation axis X of the cylindrical wall 4c.
The hole 18 is formed in a slit shape extending along the height direction of the receiving surface 7. The hole 18 is for excluding a part of the workpiece 1 held in the pressing space 8 to the outside of the pressing space 8. That is, the processing target 1 deposited in the pressing space 8 between the receiving surface 7 and the inner piece 5 is easily fixed to the receiving surface 7, and the processing target 1 once fixed is subjected to the composite It tends to remain without being converted. In addition, the object 1 deposited on this portion
Increases the rotational load of the cylindrical rotator 4. For this reason,
The inconvenience is solved by positively removing the object 1 deposited on the portion, and the processing efficiency is improved.

In order to surely treat the whole object 1 to be treated, the object 1 is deposited at the central portion of the bottom 4b in the powder processing apparatus of the present invention, as shown in FIG. Is provided with a deposition prevention means S for preventing the occurrence of the problem. In this embodiment, a substantially conical protruding portion S1 coaxial with the rotation axis X is provided on the bottom portion 4b to prevent the accumulation preventing means S from being provided.
Is configured. The protrusion S1 rotates integrally with the bottom 4b. Since the object 1 cannot be deposited near the center of the bottom 4b by the accumulation preventing means S, the centrifugal force can be reliably applied to all the objects 1 to be processed. 1 is moved toward the receiving surface 7, and is subjected to compounding or spheroidization by receiving an external force from the receiving surface 7 and the inner piece 5. Further, inside the cylindrical rotating body 4, the workpiece 1 to which the external force is applied by the receiving surface 7 or the inner piece 5 scatters inside the cylindrical rotating body 4, and again the cylindrical rotating body 4 It is conceivable that it falls toward the center. In this case, the substantially conical projection S1 as in the present configuration.
Is provided, the workpiece 1 that has fallen is
1, and is pushed out toward the receiving surface 7. As a result, a strong external force acts again on the processing target 1, and the processing of the processing target 1 is promoted.

(Inner Piece) An inner piece 5 is provided inside the cylindrical rotary member 4 at a predetermined interval on the receiving surface 7. The inner piece 5
Is fixed to a first support rod 20 which is suspended from above with respect to the inside of the cylindrical rotary member 4. The inner piece 5 applies a pressing force to the workpiece 1 in cooperation with the receiving surface 7 with the rotation of the cylindrical rotary body 4. Therefore, the horizontal cross-sectional shape of the inner piece 5 is, for example, a semicircular shape as shown in FIG. With this configuration,
Since the effect of compacting the object 1 to be intruded between the inner piece 5 and the receiving surface 7 can be expected,
This is advantageous for processing such as compounding and spheroidization. Further, the first support rod 20 is rotatable at a portion attached to the lid 3b, and by rotating the first support rod 20 at a predetermined angle, the gap between the inner piece 5 and the receiving surface 7 can be changed. Therefore, it is possible to change the gap so that optimal processing can be performed according to the type of the workpiece 1 and the processing purpose.

(Scraper) As shown in FIG. 1 and FIG. 2, the inside of the cylindrical rotary
A scraper 6 is provided on the lower side of the inner piece 5 along the rotation direction of. The scraper 6 is for scraping off the object layer adhered to the receiving surface 7. The scraper 6 is attached to a second support rod 21 suspended from the cover 3b. The second support rod 21 is also rotatable with respect to the lid 3b, similarly to the first support rod 20. By the scraper 6, a new workpiece 1 is constantly circulated and supplied to the pressing space 8,
Processing such as compounding is promoted. In addition, the scraper 6 may be provided immediately after the inner piece 5, or may be installed about 30 to 45 degrees behind the rotation axis X of the cylindrical rotary body 4, and the installation position is arbitrary. is there. However, if the scraper 6 is provided immediately before the inner piece 5,
Is scattered and the workpiece 1 is not properly supplied to the pressing space 8, which is not preferable.

(Blade Member) A plurality of blade members 22 are provided on the outer periphery of the casing 3. The blade member 22
Is for recirculating the processing object 1 removed from the hole 18 to the outside of the cylindrical rotary member 4 in the pressing space 8 again. The blade member 22 is formed so as to conform to the inner surface shape of the casing 3 in order to smoothly and surely transport the workpiece 1 to the pressing space 8.

(Effect) As in the present configuration, the prevention of the deposition of the workpiece 1 at the substantially central portion of the bottom 4b ensures the removal of the workpiece 1 existing inside the cylindrical rotary member 4. By pushing out to the side of the receiving surface 7, it is possible to reduce the ratio of the workpiece 1 remaining unprocessed without an external force based on the driving rotation of the cylindrical rotary body 4 acting. As a result, the processing efficiency of the object 1 can be improved, the quality of the obtained product can be homogenized, and the yield of materials can be improved.

[Another Embodiment] <1> In the above embodiment, an example was shown in which a conical protruding portion S1 was formed at substantially the center of the bottom portion 4b as the deposition preventing means S. As shown in FIG.
The protrusion 2 is formed at a substantially central portion of the bottom 4b to constitute the accumulation preventing means S. In this case, the plate-shaped member S2 also rotates with the rotation of the cylindrical rotator 4, and the airflow around the plate-shaped member S2 is disturbed, and the workpiece 1 is deposited near the center of the bottom 4b. Stop trying. The plate member S2 may be provided so that the rotation axis X of the cylindrical rotator 4 passes through the center of the plate member S2 in the width direction as shown in FIG. As shown in FIG. 3B, the plate-shaped member S2 may be provided on the bottom 4b such that one side in the vertical direction is along the rotation axis X.

Although not shown, the plate member S2
From the lid 3b, and the plate-like member S
2 may be located near the center of the bottom 4b. In this case, the workpiece 1 to be deposited at the center of the bottom 4b can be reliably removed.

<2> Further, as shown in FIG. 4, the deposition preventing means S is provided with an air supply mechanism S3 for supplying air to a substantially central portion of the bottom portion 4b, as shown in FIG. You can also. For example, as shown in FIG. 4A, the air supply pipe 23 is made to protrude from the lid 3b toward the center of the bottom 4b, and the workpiece 1 to be deposited on the bottom 4b is scattered. . The gas ejected from the air supply mechanism S3 is not limited to air, and may be, for example, an inert gas or the like when controlling the atmosphere inside the casing 3. With this configuration, the bottom 4b
It is possible to more positively and reliably remove the workpiece 1 deposited on the substrate. In FIG. 4A, the air supply pipe 23 is provided also on the upper surface of the support 5a supporting the inner piece 5. With this configuration,
The object 1 can be prevented from accumulating on the upper surface of the support 5a, and the amount of the object 1 remaining untreated can be reduced.

In addition, as shown in FIG. 4B, the air supply mechanism S3 has a first air injection port 24a provided on the upper surface of the bottom portion 4b, and a rotary shaft portion of the cylindrical rotary member 4. The air may be blown out from the interior of the casing 4 into the interior of the casing 3. Also in this case, the inner piece 5
In order to prevent the workpiece 1 from being deposited on the upper surface of the support 5a, a second air injection port 24b for injecting air toward the upper surface may be provided in the first support rod 20. it can. In any case, the air supply mechanism S3 may have any configuration as long as it can inject airflow to the vicinity of substantially the center of the bottom 4b or to the upper surface of the support 5a.

[Brief description of the drawings]

FIG. 1 is an explanatory view showing a powder processing apparatus of the present invention.

FIG. 2 is an explanatory view showing details of an inner piece.

FIG. 3 is an explanatory view showing a deposition preventing unit according to another embodiment.

FIG. 4 is an explanatory view showing a deposition preventing unit according to another embodiment.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Processed object 4 Cylindrical rotating body 4b Bottom part 5 Inner piece 7 Receiving surface S Accumulation prevention means S1 Projecting part S2 Plate member S3 Air supply mechanism X Rotation axis

Claims (4)

[Claims] A cylindrical rotating body having a bottom portion and a receiving surface provided on a peripheral portion of the bottom portion, the rotating body being rotatable about a rotation axis along a vertical direction, and an inside of the cylindrical rotating body. The workpiece is provided on a support rod suspended from above, and is disposed inside the cylindrical rotator so as to approach the receiving surface, and the object to be processed is rotated with the rotation of the cylindrical rotator. A powder processing apparatus comprising: an inner piece acting on the bottom; and a deposition preventing means for preventing the deposition of the object to be processed, provided at a central portion of the bottom portion. 2. The powder processing apparatus according to claim 1, wherein the accumulation preventing means is a substantially conical protrusion provided on the bottom so as to be coaxial with the rotation axis. 3. The powder processing apparatus according to claim 1, wherein said accumulation preventing means is a plate-like member provided so as to protrude from a substantially central portion of said bottom portion. 4. The powder processing apparatus according to claim 1, wherein said accumulation preventing means is an air supply mechanism for supplying air to a substantially central portion of said bottom portion.