JP2003053211A - Crusher - Google Patents

Abstract

(57) [Summary] [PROBLEMS] To prevent dust and moisture in the atmosphere from being mixed into a material to be ground from the outside. A pestle (12) is provided with a sealed box (1) having an opening / closing door (2) that allows a material to be crushed to be taken in and out, and a mortar (11) pairing the pestle (12) with a permanent magnet (15) fixed therein.
And a rotating magnetic force generating means (motor 13 and permanent magnets 14a, 14b) provided below the mortar 11 and transmitting a magnetic force to rotate the permanent magnet 15 through the bottom of the mortar 11.
Is provided inside the sealed box 1. The surface of the sealed box 1 that separates the inside and the outside of the box is formed of a dehumidifying layer in which a porous electrode film is adhered to both surfaces of a hydrogen ion conductive solid polymer electrolyte membrane. The potential is applied by setting the electrode film on the inner side of the box to a higher potential than the electrode film on the outer side.

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an experimental crusher used in a laboratory, for example. [0002] As the above-mentioned pulverizing apparatus, the present applicant has proposed a mortar-type pulverizing apparatus using a precession motion by rotating a magnet (Japanese Patent Application No. 2001-31816). [0003] By the way, in the above-mentioned proposed apparatus, the installation place is not particularly limited. Therefore, when the pulverization processing is performed in the air, dust and moisture in the air are generated during the processing. There is a risk of mixing in the pulverized powder. Further, depending on the substance to be treated, oxidation may proceed. The present invention has been made to solve such problems of the prior art, and has as its object to provide a pulverizing apparatus capable of preventing dust and moisture in the atmosphere from being mixed into a material to be pulverized from the outside. Aim. A crushing device according to the present invention comprises a sealed box having a door through which a material to be crushed can be taken in and out, and a pestle in which a permanent magnet is fixedly housed, and a pestle. A mortar that forms a pair, a crusher provided below the mortar, and provided with a rotating magnetic force generating unit that emits a magnetic force that transmits the bottom of the mortar and rotates the permanent magnet, is installed inside the sealed box. Crushing device, wherein the surface of the sealed box that separates the inside and outside of the box is formed of a dehumidifying layer in which a porous electrode film is adhered to both surfaces of a hydrogen ion conductive solid polymer electrolyte membrane. The potential is applied between the two electrode films by setting the electrode film inside the box to a higher potential than the external electrode film. In this pulverizer, when the moisture in the box touches the inner surface of the dehumidifying layer, the moisture in the moisture is decomposed into oxygen ions, hydrogen ions, and electrons at the electrode film inside the box. . The generated hydrogen ions pass through the solid polymer electrolyte membrane and move to the cathode-side (outside the box with a lower potential) electrode film, which reacts with oxygen in the atmosphere to form water. Generate. Due to this phenomenon, the water in the box is reduced and dehumidified. Further, such a dehumidifying layer prevents dust and the like from the outside of the box from entering the container. Therefore, it is possible to prevent the pulverized material from being adversely affected by moisture and from being mixed with dust and the like. Hereinafter, embodiments of the present invention will be described in detail. FIG. 1 is a front view showing a crusher according to an embodiment of the present invention, and FIG. 2 is a left side view thereof. The crushing apparatus includes a sealed box 1 having an opening / closing door 2 at an upper part, and a crusher 10 built in the sealed box 1. The sealed box 1 has a storage chamber 3 with an open front surface at the upper part, and the opening of the storage chamber 3 is openable and closable by the opening and closing door 2 so that materials to be crushed can be taken in and out. Has become. The lower side of the floor surface 4 of the accommodation room 3 is a drive room 5. In FIG. 1, reference numeral 8 denotes an opening / closing door 2 and a sealed box 1
Reference numeral 9 denotes a fastener for opening and closing the door 2. The left side of the storage chamber 3 is partially opened as shown in FIG. 2, and a dehumidifying layer 20 is provided in the opening. As shown in FIG. 3, the dehumidifying layer 20 is formed by attaching porous electrode films 22 and 23 to both surfaces of a hydrogen ion conductive solid polymer electrolyte film 21. 22 is arranged outside the box, and the electrode film 23 is arranged inside the box. In addition, a potential is applied between the two electrode films 22 and 23 by a power supply 24 provided on the inner wall of the housing chamber 3 with the electrode film 23 inside the box having a higher potential than the electrode film 22 outside the box. You. As the power supply 24, for example, a DC battery of about 3.5 V or less is used. The power supply 24 is turned on / off by, for example, a switch 2 provided on the outer wall of the accommodation room 3.
5 is performed. In addition, the accommodation room 3 and the dehumidifying layer 20 are insulated. The crusher 10 is provided in a mortar 11, which is removably mounted on the floor 4 of the storage chamber 3, a pestle 12 placed in the mortar 11, and inside the drive chamber 5. Motor 13 and permanent magnet 14 as rotating magnetic force generating means
a, 14b. The mortar 11 is made of, for example, a ceramic having a cylindrical shape with a bottom and an opening at the top. The inner surface of the bottom is formed in a mortar shape, and is mounted on the floor surface 4 with its axial center in the vertical direction. Is placed. The shape of the mortar 11 may be another shape, and any material can be used as long as the material is non-magnetic. The pestle 12 is made of ceramic, for example, having a lower part rounded and rounded in an arc-shaped cross section, and a rod-shaped permanent magnet 15 is provided inside the pestle 12 in a fixed state.
The permanent magnet 15 has an N pole at one end and an S pole at the other end, and its axis is inclined with respect to the axis of the pestle 12 itself. The inclination angle θ is, for example, 30 ° or less. It is set to any angle. The material of the pestle 12 is not limited to ceramic and any material can be used as long as it is non-magnetic. The motor 13 has a rotating shaft 13 in the drive chamber 5.
a is directed upward, and the rotating shaft 13 a is arranged so that the position thereof substantially coincides with the axis of the mortar 11. A horizontally long strip-shaped support plate 13b is attached to the upper end of the rotating shaft 13a so as to rotate along a horizontal plane. The motor 13 is operated by an operation knob 6 provided on the front surface of the drive chamber 5. When the operation knob 6 is rotated clockwise from the off position, the motor 1 is operated.
3 turns on, and when it is further rotated clockwise, the rotation axis 1
This is performed so that the rotation speed of 3a is increased. When the motor 13 is turned on by operating the operation knob 6, the lamp 7 provided on the front of the drive chamber 5 is turned on, and is turned off when the operation knob 6 is returned to the off position. The permanent magnets 14a and 14b are formed, for example, in the shape of a bar. The permanent magnets 14a and 14 are separated from each other by an appropriate distance on the support plate 13b.
The permanent magnets 14a and 14 are fixed with their N poles facing up and the S poles of the other permanent magnet 14b facing up. It is fixed so as to be substantially aligned in the vertical direction. These permanent magnets 14a and 14b exert a magnetic force on the permanent magnet 15 built in the pestle 12, and rotate the pestle 12 with the rotation of the support plate 13b. Note that an opening 4a is partially formed on the floor surface 4 of the accommodation room 3 so that the magnetic force from the permanent magnet 14 can reach the permanent magnet 15 without any trouble. Next, the operation of the pulverizer thus constructed will be described. First, the door 2 is opened, and it is confirmed that the mortar 11 is placed on a predetermined position on the floor 4. If not, the mortar 11 is placed again on the predetermined position. Subsequently, a predetermined amount of the material to be crushed is charged into the mortar 11, and the opening and closing door 2 is closed. The mortar 11 may be placed again on the predetermined position after charging the material to be crushed. Next, the operation knob 6 is turned on from off.
Accordingly, the motor 13 and the permanent magnet 14 rotate. Further, the magnetic force generated from the permanent magnet 14 is
The pestle 12 rotates through the bottom of the mortar 11 and reaches the permanent magnet 15 incorporated in the pestle 12. At this time,
Since the axis of the permanent magnet 15 is inclined at an inclination angle θ with respect to the axis of the pestle 12, the so-called pestle 12 is generated on the pestle 12 with the rotation of the permanent magnet 15 as shown in FIG. The material to be crushed is crushed between the pestle 12 and the mortar 11 by “precession”. Before and after this, the switch 25 is turned on to apply a potential from the power supply 24 to the dehumidifying layer 20. Thereby, the dehumidification layer 20 starts dehumidification. That is, as shown in FIG.
When it touches the inner surface of the electrode film 23, that is, the electrode film 23, the moisture in the moisture is decomposed into oxygen ions, hydrogen ions, and electrons in the electrode film 23. The generated hydrogen ions pass through the solid polymer electrolyte membrane 21 and move to the cathode-side (outside the box having a lower potential) electrode film 22, and react with oxygen in the atmosphere at the cathode-side electrode film 22. To produce water. Due to this phenomenon, the water in the storage chamber 3 is reduced and dehumidified. In addition, such a dehumidifying layer 20 prevents dust and the like in the atmosphere from entering the storage chamber 3. Therefore, according to the present embodiment,
It is possible not only to prevent the pulverized material processed by the pulverizer 10 from being adversely affected by moisture, but also to prevent dust and the like from being mixed into the pulverized material. FIG. 6 is a graph showing the results of a dehumidification experiment. The horizontal axis represents time (minutes), and the vertical axis represents humidity RH.
(%) And outside air temperature (° C). The solid line in the figure indicates the humidity RH, and the broken line indicates the outside air temperature. The experimental conditions were as follows: the volume of the storage chamber 3 was about 5 liters, and the size of the dehumidifying layer 20 was 50 mm × 50.
mm. As shown in this figure, the interior of the accommodation room 3 is kept at a humidity of 3
It is understood that the moisture was dehumidified from the initial value of 3 RH (%) to 14 RH (%) in about 20 minutes, and further to the saturated state of 11 RH (%) 30 minutes after the start. Therefore, it can be determined that dehumidification is possible if the processing is performed for about 20 minutes. At this time, the dehumidification rate J per 1 m ^{2 of the} dehumidification layer 20 from the start of dehumidification to about 20 minutes is calculated by the following equation (1) to be 0.0342 (kg-H).
₂ O) / (hr · m ² ). J = (W1−W2) / (processing time × dimension of dehumidifying layer 20) (1) where W1: moisture before the start of processing (0.0000495 (kg−
H ₂ O)) W2: 20 minutes after water _{(0.000021 (kg-H 2 O} )) Processing time: The dimensions of 1/3 hour dehumidification layer: 0.0025M ² [0026] Incidentally, storage chamber in the above-described embodiment Has a configuration in which a dehumidifying layer is disposed on the left side surface, but the present invention is not limited to this. For example, it may be placed on the right side of the accommodation room, on the opening / closing door or on the back, or on another location such as the ceiling, or may be formed almost entirely with a dehumidifying layer. In the above-described embodiment, the motor 13 and the permanent magnet 14 are used as the rotating magnetic force generating means of the crusher 10. However, the present invention is not limited to this, and the magnetic generating section of a rotary linear motor is used. It can also be applied to crushers. As described above in detail, in the case of the present invention, when the moisture in the box touches the inner surface of the dehumidifying layer, the moisture in the moisture is removed by the electrode film inside the box. Hydrogen ions are decomposed into ions, hydrogen ions, and electrons, and the resulting hydrogen ions move through the solid polymer electrolyte membrane to the electrode film on the cathode side (outside the box with a lower potential), and the electrode on the cathode side The membrane reacts with oxygen in the atmosphere to produce water, thereby reducing the moisture in the box and dehumidifying. Further, since the dehumidifying layer prevents dust and the like from the outside of the box from entering the container, it is possible to prevent the pulverized material from being adversely affected by moisture and from being mixed with dust and the like.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a front view showing a crusher according to an embodiment of the present invention. FIG. 2 is a left side view showing a crusher according to one embodiment of the present invention. FIG. 3 is a cross-sectional view showing a structure of a dehumidifying layer used in the crushing device of the present invention. FIG. 4 is an explanatory diagram of a so-called “precession” generated on a pestle when crushing is performed by a crushing device according to an embodiment of the present invention. FIG. 5 is an explanatory diagram of a dehumidifying principle of a dehumidifying layer used in the crushing device of the present invention. FIG. 6 is a graph showing the results of a dehumidification experiment, in which the horizontal axis represents time (minutes) and the vertical axis represents humidity RH (%) and outside air temperature (° C.). [Description of Signs] 1 Sealed box 2 Opening / closing door 3 Storage room 10 Crusher 11 Mortar 12 Pestle 13 Motor (rotating magnetic force generating means) 14a, 14b Permanent magnet (rotating magnetic force generating means) 15 Permanent magnet 20 Dehumidifying layer 21 Solid polymer Electrolyte films 22, 23 Electrode film 24 Power supply

   ────────────────────────────────────────────────── ─── Continuation of front page    (72) Inventor Osamu Matsumoto             AS ONE 4-15-5 Tenma, Kita-ku, Osaka-shi             Inside the company (72) Inventor Atsushi Tanaka             217-25 Enmeicho, Kashiwara-shi, Osaka Tanaka Seiki Co., Ltd.             In the formula company F term (reference) 4D067 CF03 CF12 EE47 EE50 GB10

Claims (1)

Claims: 1. A pestle including a sealed box having a door through which a material to be crushed can be taken in and out, and a permanent magnet built therein in a fixed state; a mortar paired with the pestle; A crusher provided below and comprising a rotating magnetic force generating means for transmitting a magnetic force for rotating the permanent magnet through the bottom of the mortar,
A pulverizer installed inside the sealed box, wherein a surface separating the inside and the outside of the sealed box is covered with a porous electrode film on both surfaces of a proton conductive solid polymer electrolyte membrane. A pulverizing device comprising a dehumidifying layer attached thereto, wherein a potential is applied between the two electrode films by setting the electrode film inside the box to a higher potential than the external electrode film.