JP2009247979A - Continuous mill having powder separation function - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a continuous mill having a powder separation function. <P>SOLUTION: A milling pot is attached into a short cylindrical revolution housing 60 coaxially therewith, the revolution housing 60 having an upper opening closable with a lid body 61 and having a bottom. At a peripheral wall of the milling pot, a powder passing port is formed to which a screen for passing powder milled in the milling pot and having grain size below a definite value is attached. The powder passed through the powder passing port is guided to a powder taking-out part 9 through a powder collecting duct formed between an outer circumferential surface of the milling pot and an inner circumferential surface of the revolution housing. Further the revolution housing 60 and its driving mechanism are attached to a base 3 in such a manner that a central axis of the revolution housing 60 and the revolution central axis 5 which is in parallel therewith have an inclination of 5° to 25° with respect to a perpendicular axis of the base 3. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention revolves the crushing pot containing the rotor inside to cause the rotor to roll along the inner wall surface in the crushing pot, and to remove the object to be crushed in the crushing pot by its own weight and centrifugal force. The present invention relates to a continuous crushing device having a function of automatically taking out a powder pulverized to a certain particle size from a crushing pot in a rotary crushing device (cycle rotary mill) for crushing.

In the following Patent Document 1, an object to be crushed is put into a short cylindrical pulverizing pot in which a rotor is movably accommodated, and the pulverizing pot is revolved to give centrifugal force to the rotor. There is disclosed a rotary pulverizer (cycle rotary mill) that rolls along the inner wall surface in a pulverizing pot and pulverizes an object to be pulverized in the pulverizing pot by its own weight and centrifugal force.
However, in the rotary pulverizer described in Patent Document 1, since the pulverization pot is supported by a spring to enable its revolving motion, there are many vibrations and noises during the pulverization operation. There was a problem that the fatigue failure of the steel was unavoidable and the operation could not be performed for a long time.

  In order to solve such a problem, in Patent Document 2 below, a spring is not used to support the crushing pot, a crank-like arm is attached to the outer peripheral surface of the crushing pot, and the reciprocation of the tip is guided by a guide rail. Thus, there is disclosed a rotary pulverizer configured so that the pulverization pot is not swung and smoothly revolves.

However, in the rotary pulverizer described in Patent Document 2, in order to take out the pulverized powder from the pulverizing pot, it is necessary to stop the operation of the pulverizer, open the cover of the pulverizing pot, and manually remove it. There is.
Therefore, until the extraction operation is performed, the pulverization operation is continued in a state where a mixture that has been sufficiently pulverized and pulverized and a mixture that is still insufficiently pulverized and requires further pulverization are mixed. Become.
In such a state where powders having different particle sizes are mixed, the pulverization efficiency of the powder having a large particle size is lowered.
Therefore, if the pulverization operation is continued until all of the materials to be crushed in the pulverization pot are sufficiently pulverized, some of them are finely pulverized more than necessary, and a powder with a uniform particle size is obtained. Disappear. In addition, there is a problem of deterioration due to overheating due to prolonged grinding.
Therefore, it is desirable to remove the powder pulverized to a certain particle size from the pulverization pot as early as possible.

Japanese Utility Model Publication No. 57-60840 JP-A-9-313967

  The present invention has been made in order to solve the above-mentioned problems. The object of the present invention is to automatically remove a powder pulverized to a predetermined particle size from a pulverization pot, and to pulverize the pulverization insufficiently. An object of the present invention is to provide a continuous pulverizing apparatus in which the pulverization operation is continued in a state where only the objects are left in the pulverization pot.

The above purpose is
A short cylindrical crushing pot with a bottom whose upper opening can be closed by a lid, a disc-shaped rotor movably accommodated in the crushing pot, a crushing pot rotatably supported, and its center And a drive mechanism that revolves around a revolving center axis provided in parallel with the shaft, and by revolving movement of the crushing pot, a centrifugal force is applied to the rotor to roll it along the inner wall surface of the crushing pot. In a continuous crushing device that crushes the object to be crushed in the crushing pot by the weight of the rotor and centrifugal force,
The crushing pot is fixed coaxially with the revolving housing in a short cylindrical revolving housing with a bottom, and the revolving housing is revolved around the revolving central axis by the drive mechanism, so that a similar revolving is applied to the crushing pot. In addition, the inner diameter of the revolution housing is larger than the outer diameter of the crushing pot, and the height of the peripheral wall of the revolution housing is substantially equal to the height of the peripheral wall of the crushing pot. The revolving housing and the upper opening of the crushing pot are closed simultaneously by closing, and a powder collecting duct is formed between the outer peripheral surface of the crushing pot and the inner peripheral surface of the revolving housing. ,
The revolving housing is formed by a revolving guide mechanism comprising an arm having a guide pin protruding from the outer peripheral surface of the revolving housing and having a guide pin parallel to the central axis of the revolving housing at the front end, and a guide rail for slidably guiding the guide pin. , Held so that it can revolve around the revolution center axis,
The peripheral wall of the pulverization pot is provided with a powder passage port to which a screen for passing powder having a predetermined particle size or less pulverized in the pulverization pot is attached. Is configured to be guided to the powder extraction portion through the powder collection duct formed between the outer peripheral surface of the revolving housing and the inner peripheral surface of the revolution housing.
Further, the revolving housing and its drive mechanism are attached to the base so that the center axis of the revolving housing and the revolving center axis parallel thereto are inclined by 5 to 25 degrees with respect to the vertical axis of the base. Configured so that the powder in the powder collection duct collected is collected toward the lower part and taken out from the powder extraction unit,
It is achieved by a continuous grinding apparatus having a powder separation function characterized by the following.
The inclination angle with respect to the vertical axis is more preferably set within a range of 10 degrees to 20 degrees.

  With the configuration as described above, the powder pulverized to a predetermined particle size in the pulverization process is taken out from the pulverization pot through a screen attached to the powder passage port on the peripheral wall of the pulverization pot, and then downstream through the powder collection duct. Since it is automatically guided to the powder take-out section on the side, it is possible to prevent the powder that has been pulverized to a predetermined particle size from being further pulverized or altered by heat generated during the pulverization operation. .

Hereinafter, details of the present invention will be described with reference to the drawings.
FIG. 1 is a longitudinal sectional view showing an embodiment of a continuous grinding apparatus according to the present invention.
FIG. 2 is a top view of the continuous crusher shown in FIG. 1 with the upper half of the case removed;
3 is a longitudinal sectional view of a revolution housing and a grinding pot of the continuous grinding apparatus shown in FIG.
4 is a top view of the revolution housing and the crushing pot shown in FIG.
FIG. 5 is a top view of the revolution guide mechanism of the continuous crushing apparatus shown in FIG.
6 is an explanatory view showing the operation of the revolution guide mechanism shown in FIG.
FIG. 7 is an explanatory view showing the operation of the revolution guide mechanism of the conventional crushing pot.

First, FIG. 1 and FIG. 2 will be described.
1 and 2, 1 is a continuous crushing apparatus according to the present invention, 2 is a case, 20 is a case opening / closing lid, 3 is a base, 4 is a motor, 40 is a V pulley, 5 is a revolving center shaft, 50 and 51 Is a bearing, 52 is a V pulley, 53 is a V belt, 54 is a balance weight, 6 is a grinding pot, 60 is a revolving housing, 61 is a lid, 62 is a spring catch, 64 is a powder collecting duct, and 65 is an induction duct. , 7 is a rotor stone, 8 is a revolving guide mechanism, 80 is an arm, 81 is a guide pin, 82 is a guide rail, 9 is a powder extraction part, 91 is a sealed extraction chamber, 92 is an extraction door, 93 is a universal hose, 94 Is a powder receiving tray, and 95 is a receiving tray.

The case 2 has an openable / closable lid 20 on the upper left side in FIG. 1, and when the object to be crushed is put into the grinding pot 6 provided in the revolution housing 60, the case open / close lid 20 is opened. Next, the lid 61 of the revolution housing 60 is opened by operating a spring catch 62 attached thereto, and the object to be crushed is put into the crushing pot 6 in the revolution housing 60.
A base 3 is provided inside the case 2. A revolving center shaft 5 having an eccentric rotating cam 55 (see FIG. 3) for revolving the revolving housing 60 fixed to the upper end of the base 3, A drive motor 4 is attached.
In the present invention, in order to incline the revolution housing 60, the revolution center shaft 5 is attached so as to be inclined at an angle α with respect to the vertical axis of the base 3 as shown in FIG. 1. In accordance with this, the rotation axis of the motor 4 is also inclined by the angle α.
Here, the angle α is set in the range of 5 to 25 degrees, and more preferably in the range of 10 to 20 degrees.

A V pulley 40 is attached to the upper end of the drive shaft of the motor 4.
The revolution center shaft 5 is rotatably supported by bearings 50 and 51 provided on the base 3.
A V pulley 52 is attached to the revolution center shaft 5, a V belt 53 is stretched between the V pulley 40 of the motor 4, and a half-moon-shaped balance weight 54 is located near the upper end of the revolution center shaft 5. Further, an eccentric rotation cam 55 is attached to the upper end of the revolution center shaft 5, and a ball bearing 56 is provided on the outer peripheral surface of the eccentric rotation cam 55.
Therefore, when the motor 4 is driven, the revolution center shaft 5 rotates, and the eccentric rotation cam 55 rotates eccentrically.

As shown in FIG. 3, the revolving housing 60 with the crushing pot 6 attached therein has a short cylindrical shape with a bottom, and a cylindrical mounting portion 60a into which a ball bearing 56 is fitted is provided at the center of the bottom surface. After the ball bearing 56 is fitted therein, the revolution housing 60 is rotatably attached to the eccentric rotation cam 55 by closing the opening of the attachment portion 60 a so that the revolution housing 60 does not fall off the eccentric rotation cam 55.
The upper surface of the revolution housing 60 is closed by a lid 61 that can be opened and closed. When the lid 61 is closed, the upper opening of the crushing pot 6 is also closed at the same time. The lid 61 is kept closed by a spring catch 62 during operation.

As shown in FIG. 5, the revolution guide mechanism 8 of the revolution housing 60 includes an arm 80, a guide pin 81, a guide rail 82, and a ball bearing 83.
The arm 80 is provided so as to protrude from the outer peripheral surface of the revolution housing 60, and a guide pin 81 parallel to the central axis of the revolution housing 60 is attached to the tip of the arm 80.
The guide rail 82 of the guide pin 81 is attached to the base 3.
A ball bearing 83 is attached to the guide pin 81, and the outer case of the ball bearing 83 is configured to be rotatable about the central axis of the guide pin 81 and to slide along the guide rail 82. The guide pin 81 is held along the guide rail 82 so as to freely advance and retract.

Here, the movement of the revolution housing 60 and the revolution guide mechanism 8 will be described with reference to FIG.
When pulverizing an object to be pulverized using the continuous pulverizing apparatus 1, first, the opening / closing lid 20 of the case 2 is opened, the lid 61 of the revolving housing 60 is opened, and the pulverizing pot 6 provided in the revolving housing 60. After the material to be crushed is put into the interior, the lid 61 and the lid 20 of the case 2 are closed. When the above preparation is completed, the control panel (not shown) is switched on.
When the motor 4 is rotated by turning on the switch, and the revolving central shaft 5 is rotated through the V belt 53 hung between the V pulleys 40 and 52, the eccentric rotating cam attached to the shaft end is rotated. 55 rotates at high speed in an eccentric state in the cylindrical mounting portion 60 a on the bottom surface of the revolution housing 60.

At this time, since the guide pin 81 of the arm 80 attached to the revolution housing 60 reciprocally slides along the guide rail 82, the revolution housing 60 is swingably held. Prevent rotating around.
Therefore, during operation, when the eccentric rotating cam 55 fixed to the revolution center shaft 5 rotates eccentrically, the revolution housing 60 rotates at high speed around the revolution center shaft 5 as shown in FIGS. 6 (A) to (D). Will revolve around (see Fig. 6).
Due to the action of the revolving guide mechanism 8, as in the conventional apparatus shown in FIG. 7, the crushing pot 6 is vibrated as compared with the case where it is held by the two coil springs A and B that expand and contract with the revolving motion. The generation of noise and noise can be greatly reduced and the durability can be improved.

Next, the structure of the crushing pot 6, the revolution housing 60, the powder collection duct 64, the powder extraction part 9, etc. is demonstrated.
As shown in FIG. 3, the bottomed short cylindrical crushing pot 6 is similarly fixed coaxially with the revolving housing inside a short cylindrical revolving housing 60 with a bottom.
Accordingly, when the revolving housing 60 is revolved around the revolving center shaft 5 as described above, the same revolving motion is also given to the crushing pot 6. When the crushing pot 6 revolves at such a high speed, the disk-shaped rotor 7 movably accommodated inside the crushing pot 6 rolls along the inner wall surface of the crushing pot 6 by centrifugal force, and the weight of the rotor 7 is reduced. The material to be ground in the grinding pot 6 is crushed by the centrifugal force.

The height of the peripheral wall of the revolution housing is formed to be substantially equal to the height of the peripheral wall of the crushing pot 6. Therefore, the upper opening of the revolution housing and the crushing pot is closed simultaneously by closing the lid 61 of the revolution housing 60. It has become.
Further, the inner diameter of the revolution housing 60 is larger than the outer diameter of the crushing pot, whereby a powder collecting duct 64 is formed between the outer peripheral surface of the crushing pot 6 and the inner peripheral surface of the revolution housing. ing.
Further, as shown in FIG. 4, a powder passage port 6 a to which a screen 63 for allowing the powder having a predetermined particle size or less pulverized in the pulverization pot to pass is formed on the peripheral wall of the pulverization pot 6.
The powder that has passed through the screen 63 of the powder passage port 6a is collected in the powder collecting duct 64 formed between the outer peripheral surface of the crushing pot 6 and the inner peripheral surface of the revolution housing, and is passed through the induction duct 65. It is guided to the powder extraction unit 9.

The powder take-out part (9) is configured such that the powder taken out from the induction duct 65 through the universal hose 93 is guided into the sealed take-out chamber 91.
A take-out door 92 is attached to the sealed take-out chamber 91. In the illustrated embodiment, a receiving tray mounting shelf 95 is attached to the inner wall surface of the take-out door 92, and a flexible hose is attached to the powder receiving tray 94 placed thereon. The powder discharged through 93 is received.

Thus, in the present invention, the powder discharged to the powder collecting duct 64 formed between the outer peripheral surface of the crushing pot 6 and the inner peripheral surface of the revolution housing 60 is directed toward the induction duct 65. In order to automatically move and be discharged into the sealed take-out chamber 91, as shown in FIG. 1, the center axis of the revolution housing 60 and the revolution center axis 5 parallel to the center axis are perpendicular to the base 3. It is attached so as to be inclined with respect to the axis by an angle α.
Therefore, the revolution housing 60 and the bottom surface of the crushing pot 6 are inclined by an angle α with respect to the horizontal plane.
The optimum angle α in this case varies depending on the type and particle size of the powder, the revolution speed of the revolution housing, etc., but is generally a predetermined angle within a range of 5 to 25 degrees, more desirably 10 to 20 degrees. Is set. In the embodiment shown in FIG. 1, α = 16 degrees is set.
If the angle α is less than 5 degrees, the powder does not move smoothly from the powder collection duct 64 to the induction duct 65, and if it exceeds 25 degrees, the rotor rotates in the crushing pot. Sometimes vibration and noise are likely to occur.

  The present invention is not limited to the above embodiment. For example, a ball bearing is not provided on the outer periphery of the guide pin, and the guide pin may be directly guided by the guide rail. The power transmission mechanism to the revolution center shaft, the shape of the crushing pot, the shape of the guide rail, etc. can be freely modified within the scope of the purpose of the present invention, and the present invention is within the scope of the purpose described above. Thus, all modified embodiments that can be easily conceived by those skilled in the art are included.

  Since the continuous pulverizing apparatus according to the present invention is configured as described above, according to the present invention, the powder pulverized to a predetermined particle size in the pulverization process is passed through a screen attached to the powder passage port on the peripheral wall of the pulverization pot. Since it is taken out from the crushing pot and automatically guided to the powder take-out section on the downstream side through the powder collecting duct, the powder that has been crushed to a predetermined particle size is further crushed or generated during crushing operations. It can be prevented from being altered by heat, and has a great industrial applicability.

It is a longitudinal cross-sectional view which shows one Example of the continuous crushing apparatus which concerns on this invention. It is a top view in the state where the upper half part of the case of the continuous crusher shown in Drawing 1 was removed. It is a longitudinal cross-sectional view of the revolution housing and crushing pot of the continuous crushing apparatus shown in FIG. FIG. 4 is a top view of the revolution housing and the crushing pot shown in FIG. 3. It is a top view of the revolution guide mechanism of the continuous crushing apparatus shown in FIG. It is explanatory drawing which shows the action | operation of the revolution guide mechanism shown in FIG. It is explanatory drawing which shows the action | operation of the revolution guide mechanism of the conventional crushing pot.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Continuous grinding | pulverization apparatus 2 Case 20 Case opening-and-closing lid 3 Base 4 Motor 40 V pulley 5 Revolving center shaft 50 Bearing 51 Bearing 52 V Pulley 53 V belt 54 Balance weight 55 Eccentric rotation cam 56 Ball bearing 6 Grinding pot 6a Powder passage port 60 Revolving Housing 61 Cover 62 Spring Catch 63 Screen 64 Powder Collecting Duct 65 Guide Duct 7 Rotor Stone 8 Revolving Guide Mechanism 80 Arm 81 Guide Pin 82 Guide Rail 83 Ball Bearing 9 Powder Extracting Portion 91 Sealed Extracting Chamber 92 Extracting Door 93 Swivel hose 94 Powder tray 95 Shelf mounting shelf

Claims (3)

A bottomed short cylindrical crushing pot (6) whose upper opening can be closed by a lid, a disk-shaped rotor (7) movably accommodated in the crushing pot (6), and a crushing pot (6) And a drive mechanism (4, 5, 50 to 55) that revolves around a revolution center axis (5) provided in parallel with the center axis thereof. 6) By the revolving motion of the rotor (7), centrifugal force is applied to the rotor (7) to roll it along the inner wall surface of the crushing pot (6). In a continuous pulverizing apparatus for pulverizing
The crushing pot (6) is fixed coaxially with the revolving housing in a short cylindrical revolving housing (60) with a bottom, and the revolving housing (60) is revolved by the drive mechanism (4, 5, 50 to 55). By revolving around the central axis (5), the revolving motion is imparted to the crushing pot (6), and the revolving housing (60) has an inner diameter larger than that of the crushing pot. The height of the peripheral wall of the revolving housing is substantially equal to the height of the peripheral wall of the crushing pot (6), whereby the revolving housing and the upper opening of the crushing pot are closed simultaneously by closing the lid (61) of the revolving housing (60). A powder collecting duct (64) is formed between the outer peripheral surface of the crushing pot (6) and the inner peripheral surface of the revolving housing,
The revolution housing (60) projects from the outer peripheral surface of the revolution housing, and has an arm (80) having a guide pin (81) parallel to the central axis of the revolution housing (60) at the tip, and the guide pin (81). The revolving guide mechanism (8) comprising a guide rail (82) for slidably guiding is held so as to be revolved around the revolving central axis (5),
A powder passage port (6a) is formed on the peripheral wall of the pulverization pot (6). A powder passage port (6a) to which a screen (63) for passing the powder pulverized in the pulverization pot is passed is formed. The powder that has passed through (6a) is guided to the powder extraction part (9) through the powder collection duct (64) formed between the outer peripheral surface of the crushing pot (6) and the inner peripheral surface of the revolution housing. Configured to be
Further, the revolution housing (60) and the revolution housing (60) are arranged so that the center axis of the revolution housing (60) and the revolution center axis (5) parallel thereto are inclined by 5 to 25 degrees with respect to the vertical axis of the base (3). By attaching the drive mechanism to the base (3), the powder in the inclined powder collection duct is collected toward the lower part and taken out from the powder extraction part (9). ,
A continuous pulverizing apparatus having a powder separation function.   The continuous pulverizing apparatus according to claim 1, wherein an inclination angle with respect to the vertical axis is 10 to 20 degrees. The continuous grinding device according to claim 1, wherein the guide pin (81) slides along the guide rail (82) via the ball bearing (83).

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