JP3640375B2 - Cleaning device for magnet bar of powder refiner and cleaning method - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a cleaning device and a cleaning method for removing iron powder adsorbed on a magnet bar in a powder purifier that adsorbs and refines iron powder from powder with a magnet bar.
[0002]
[Prior art]
As a means for removing iron powder from powders such as ceramic raw materials, there is an apparatus that uses iron magnetic properties to adsorb iron powder to a magnet rod and separate it. That is, several magnet rods are arranged laterally between the opposite side surfaces in the cylindrical main body, and the raw material powder is introduced from above the main body, and the iron powder is adsorbed on the magnet rod for purification. Device. The magnet bar used here is often a neodymium or samarium rare earth permanent magnet with strong magnetic force because the magnetic force of the electromagnet is weak and the iron powder adsorption force is weak and the iron powder purification efficiency is poor.
[0003]
However, when the amount of iron powder adhering to the magnet bar increases, the iron powder repeatedly adsorbs and drops off, and the magnetizing effect is saturated and the iron powder is no longer adsorbed to the magnet bar. It needs to be removed. In order to remove the iron powder adhering to the permanent magnet, the current cannot be cut off like an electromagnet, so it is necessary to apply some external force to drop the iron powder from the magnet rod.
In order to remove the iron powder adhering to the magnet bar, the above-described apparatus has been disassembled and the iron powder has been dropped by a vacuum cleaner or a brush. It was. In addition, in the operation of removing fine iron powder of several μm, although it is small, the powder is scattered in the air, which is not preferable in terms of environmental hygiene for the human body. Furthermore, some dust such as fine sand is scattered in the air, and these are mixed inside the device by dismantling the device, resulting in contamination of the powder by impurities that cannot be purified. It was not a good job.
[0004]
[Problems to be solved by the invention]
In view of the drawbacks of the above-described conventional apparatus, an object of the present invention is to remove iron powder adsorbed on a magnetic rod of a powder purifier hygienically and efficiently without disassembling the apparatus.
[0005]
[Means for Solving the Problems]
The invention according to claim 1, which has been made to solve the above-described problems, includes a hole through which each magnet bar penetrates in the main body of the powder purifier in which a plurality of magnet bars are arranged in parallel. The air purifier is slidable along the magnet rod, and the inner surface of each hole is provided with a slit for injecting air to the magnet rod. Device.
According to the second aspect of the present invention, the air blow jig of the magnetic bar cleaning device of the powder purifier according to the first aspect is slid along the magnet bar in a state in which an air flow from the lower side to the upper side is formed inside the main body. A method of cleaning a magnetic bar of a powder purifier, wherein air is jetted from a slit to a magnetic bar while the dropped iron powder is put on the air flow and discharged from above.
[0006]
DETAILED DESCRIPTION OF THE INVENTION
An embodiment of the present invention will be described with reference to FIGS.
In FIG. 1, in a cylindrical main body 1 having a square cross section, a plurality of permanent magnet rods 2 are arranged in parallel at predetermined intervals between opposing side surfaces. A powder inlet 6 is provided above the main body, and powders such as ceramic raw materials are input from here, falling inside the main body, and impurity iron powder in the powder is adsorbed to the magnet rod 2. After that, it is accumulated in the hopper 19 from the lower powder discharge port 4.
The powder is refined by repeatedly charging the powder from above or repeatedly circulating in the main body to improve its purity, but the iron rod is adsorbed to the magnet bar 2 and expands to a certain amount. Then, the adsorption and removal of the iron powder are repeated and the purification capacity is saturated. Therefore, it is necessary to periodically remove the iron powder from the magnet rod 2 to restore the purification capacity.
[0007]
In the present invention, an air blow jig 3 for injecting air from a slit provided in the inner periphery of the hole is provided in the main body 1 on the magnet bar 2 inserted in the hole, and on the main body side wall 8. A slide mechanism including a handle 10, a rotating shaft 9 and the like for moving the jig over the entire length of the magnet bar is disposed. Furthermore, an iron powder discharge mechanism is provided in the main body for discharging the iron powder that has been dropped by forming an air flow from the lower side to the upper side inside the main body.
As shown in FIG. 3, the air blow jig 3 is a plate having a cavity 17 inside, and has several holes 15 into which the magnet rod 2 is inserted. The air sent in is ejected from a slit provided around the hole, and the iron powder adsorbed on the magnet rod 2 is dropped off.
Further, as shown in FIG. 1, the slide mechanism includes a shaft 11 having an air blow jig 3 fixed to the lower end, a horizontal plate member 13 fitted to the upper portion of the shaft 11, and a lower end having a purifier. The handle 10 has a rotating shaft 9 that is locked to the main body side wall 8 by a bearing 14 and slides the horizontal plate member 13 left and right. That is, by rotating the handle, the horizontal plate member 13 moves to the right, for example, and the air blow jig 3 fixed to the lower end of the shaft 11 moves to the right.
The moving mechanism of the air blow jig is not limited to movement by rotating the handle, and there is no problem even if it is moved by a small electric motor.
The iron powder discharge mechanism includes an air inlet 5 for sending air from an obliquely lower side of the purifier body, a blower (not shown), and an iron powder outlet 7 for discharging the iron powder obliquely above the main body. At the time of iron powder cleaning work, put the falling iron powder on the airflow that flows from the air inlet 5 toward the iron powder outlet 7 so that the iron powder does not mix with the refined powder. It has a structure to discharge.
[0008]
Various forms of slits provided in the hole can be adopted, but FIG. 4 shows an example in which slits 12 oblique to the magnet bar are intermittently provided on the inner periphery of the hole, and FIG. 5 shows a perpendicular to the magnet bar. FIG. 6 shows an example in which the slits 12 perpendicular to the magnet rod are continuously provided on the inner periphery of the hole.
[0009]
【Example】
Examples of the present invention will be described below.
Magnet rod inserted into the hole with an air blow pressure of 40 N / cm ² using an air blow jig having a slit of the form shown in FIG. 4 having a distance of 2.5 mm between the magnet rod and the slit and a slit width of 0.2 mm. The iron powder adsorbed on was dropped off. At the same time, the air blow jig is moved to the left and right by rotating the handle forward and backward at the same time, and air flows from the air inlet at the bottom of the main body toward the iron powder outlet to remove the iron powder that has fallen off. Without being dropped into the mouth, it was discharged and removed from above.
It is possible to purify the raw material powder quickly and hygienically without the contamination of the powder due to the scattering of iron powder into the atmosphere and fine dust in the atmosphere, and without disassembling the powder purifier. I was able to.
[0010]
【The invention's effect】
As described above, according to the present invention, when cleaning the iron powder adhering to the magnetic rod of the powder purifier, it is not necessary to dismantle the apparatus, and no tools such as a vacuum cleaner or a brush are required. Therefore, it can be efficiently removed. Moreover, since the iron powder removed from the magnet rod by the manufacturing operation is discharged upward, it does not mix with the powder after purification at the bottom of the main body, so there is no risk of lowering the purity. It contributes greatly to development.
[Brief description of the drawings]
FIG. 1 is a front view of a powder purifier provided with an iron powder cleaning device of the present invention.
FIG. 2 is a side view of a powder purifier provided with the iron powder cleaning device of the present invention.
FIG. 3 is a front view of an air blow jig of the present invention.
FIG. 4 is a view showing an embodiment of a slit of an air blow jig.
FIG. 5 is a view showing one embodiment of a slit of an air blow jig.
FIG. 6 is a view showing an embodiment of a slit of an air blow jig.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Main body 2 Magnet bar 3 Air blow jig 4 Powder discharge port 5 Air inlet 6 Powder inlet 7 Iron powder outlet 8 Main body side wall 9 Rotating shaft 10 Handle 11 Shaft 12 Slit 13 Horizontal plate member 14 Bearing 15 Hole 16 High pressure air inlet pipe 17 Cavity 18 Suction fan 19 Hopper

Claims (2)

An air blow jig provided with a hole for penetrating each magnet bar is slidably provided along the magnet bar inside the main body of the powder refiner in which a plurality of magnet bars are arranged in parallel. A magnet rod cleaning device for a powder purifier, wherein a slit for injecting air to the magnet rod is provided on the inner periphery of the powder refiner. The air blow jig of the magnet bar cleaning device of the powder purifier according to claim 1 is slid along the magnet bar while the air flow from the lower side to the upper side is formed inside the main body. A method of cleaning a magnetic rod of a powder purifier, wherein air is injected and the iron powder that has fallen off is placed on the air flow and discharged from above.

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