JP2640274B2 - Drying equipment for ferrite powder - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a ferrite powder drying apparatus for drying a ferrite powder with a heater while moving and transporting the ferrite powder by vibrating a trough.

2. Description of the Related Art In general, ferrite powder contains a large amount of water and adheres to a mold if it is sent to a molding process as it is, and is subjected to a drying treatment before molding because wrinkles are easily generated in a molded product. .

The drying process of the ferrite powder is carried out by feeding the ferrite powder into a drying furnace by a belt conveyor and directly or indirectly applying hot air to the ferrite powder or directly heating the ferrite powder with an infrared heater or an infrared lamp. Have been done.

However, if this ferrite powder is simply loaded and transported on a belt conveyor, the heat treatment remains on the surface side of the ferrite powder and cannot be sufficiently applied to the inside, so that the degree of drying becomes uneven. .

In order to improve this, the ferrite powder is housed inside the trough, and the trough is vibrated by a vibration motor or the like to move and convey the ferrite powder while floating, and a heat treatment is performed from the box body side covering the upper part of the trough. It is preferable to apply a heating and drying device.

When the heating and drying device is applied, the trough side is vibrated by a vibration motor or the like, and since the box body side is equipped with a heating or heating means, the trough side is required to maintain the mechanical durability of the box body side. Must be separated from each other so that the vibrations do not propagate to the box body side.

On the other hand, if an interval is provided between the two so as not to transmit the vibration on the trough side to the box body side, the heating energy generated from the box body side cannot be flown to the outside, so that the thermal efficiency is reduced.

In particular, since ferrite powder is in the form of powder and granules, it not only causes the work environment to be impaired by scattering outside due to the vibration between the trough and the space between the trough and the box body, but also in the same factory. Other ferrite powders that have been subjected to a drying treatment may be mixed with each other.

Problem to be Solved by the Invention The present invention is an apparatus for drying a ferrite powder, which suppresses the transmission of the vibration on the trough side to the box body side, can efficiently heat and dry the ferrite powder, and also prevents the ferrite powder from scattering to the outside. The purpose is to provide.

Means for solving the problem In the apparatus for drying ferrite powder according to the present invention,
A trough that moves and conveys ferrite powder input from the inlet side and discharges it from the outlet side, a vibration mechanism that is provided at the lower side of the trough and vibrates the trough, and opens with a gap between the trough A hollow substantially box-shaped box body installed on the upper side with the side facing the trough, and a heater for heating and drying the ferrite powder contained in the trough and provided inside the box body, A bellows-like cover capable of covering the entire length of the trough is provided around the open side circumference of the box body to seal the space between the trough and the box body.

In the ferrite powder drying apparatus according to the present invention, since the vibration on the trough side is suppressed by the bellows-like cover so as not to be transmitted to the box body side, the mechanical durability of the box body side is impaired by the vibration on the trough side. Can be prevented. In addition, since the space between the trough and the box body is sealed with a bellows-like cover, the flow of heating energy generated from the box body side is prevented, and the ferrite powder can be dried efficiently while vibrating the ferrite powder with the trough. It is possible to prevent the outside of the box body from scattering or other ferrite powder from entering the inside of the box body, and to avoid affecting the working environment and the ferrite powder.

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, with reference to the accompanying drawings, a ferrite powder drying apparatus shown in FIG.
And a vibrating mechanism 2 that vibrates the trough 1 as a moving and floating transfer force of the ferrite powder, and a box body 3 installed on the upper side with the open side facing the trough with a gap between the trough 1 and the vibration mechanism 2. It is composed of a main mechanism.

Further, a heater 4 for heating and drying the ferrite powder F is provided inside the box body 3, and a bellows-like cover 5 capable of covering the entire length of the trough 1 is provided around the open side circumference. 3 is sealed. The entire apparatus includes a box body 3 and is assembled and configured on a base 6.

The trough 1 is provided with a bottom plate 10a having a smooth surface to form a ship bottom-shaped internal space for containing the ferrite powder F, and the upper side thereof is kept open, and the outer peripheral side is made of a heat insulating material such as glass wool.
It is configured by laminating 10b. A supply hopper for ferrite powder F is provided at the entrance side of the trough 1.
11 are provided. The supply hopper 11 for the ferrite powder F is provided with a roller (not shown) which is inverted by the drive motor 12 and is provided so as to supply the ferrite powder F to the trough 1 by a fixed amount. A discharge pipe 13 is provided at the outlet side of the trough 1 so as to be led out from the inside.
The conveyor 7 is provided for sending and transferring the next process.

A base frame 14 is provided along the longitudinal direction below the trough 1, and a vibration motor or an electromagnetic vibrator is provided as the vibration mechanism 2 at the center of the base frame 14. In addition, near each end of the base frame 14 in the longitudinal direction, horizontal girder frames 15a, 15b are provided on both sides so as to project horizontally, and between the horizontal girder frames 15a, 15b and the base 6. Are supported so that the trough 1 can vibrate by interposing compression springs 16a and 16b. The vibration mechanism 2 of the trough 1 vibrates the trough 1 obliquely upward (see the arrow in FIG. 1). The vibration of the trough 1 causes the ferrite powder F to float upward in the transport direction along with the vibration of the trough 1, thereby causing the ferrite powder F to float upward from the inlet side to the outlet side. It is equipped so that it can be moved and transported toward.

The box body 3 is formed in a hollow box shape extending from the entrance side to the exit side of the trough 1. The box body 3 is supported from both sides by pillars 30a and 30b (only one side is shown) standing on the plate surface of the base 6 near each end in the longitudinal direction. Is directed to the trough 1 to be installed above the trough 1. This support 30a, 30
As shown in FIG. 2, a protruding piece 31 provided on a horizontal side portion is engaged with and mounted on an upper end portion of one of the columns 30a, and a bearing bracket 32 is mounted on the other side column 30b with a bearing bracket 32. The box body 3 is mounted on the bearing bracket 32 as a fulcrum so as to jump up and rotate (see a two-dot chain line).

The box body 3 is formed by laminating and attaching a heat insulating material 33 such as glass wool to the outer peripheral surface in the same manner as the trough 1 described above. Further, a plurality of far-infrared heaters 40a, 40b,... Are provided at regular intervals in the longitudinal direction as heaters 4 inside the box body 3. Each of the far-infrared heaters 40a, 40b...
Power supply (not shown) led out to the outside by the upper space 34
It is equipped by connecting with. The box body 3 has a shielding structure except that an inspection door 35 is provided on a side portion so as to be freely opened and closed by a hinge 36, and an exhaust duct 37 for discharging water vapor is provided on a side portion corresponding to an outlet side of the trough 1. ing.

A bellows-like cover 5 provided around the open end side of the box body 3 is made of a heat-resistant material, and the upper end of the cover 5 is closed by a box body 3 so as to seal the gap between the trough 1 and the box body 3. Is mounted and fixed around the circumference of the open end, and is stretchably mounted between the trough 1 and the base. Also,
The cover 5 is provided with a turnbuckle 8 on the trough 1 side so as to be detachably connected to the trough 1.

In the drying device for ferrite powder configured as described above,
The ferrite powder F is supplied to the trough 1 which vibrates obliquely upward with respect to the transport direction, and the ferrite powder F is supplied to the trough 1.
It is moved while being lifted obliquely upward by the vibration of and heated by the heater 4.

With the drying treatment of the ferrite powder F, trough 1
Between the box body 3 and the bellows-shaped cover 5, the ferrite powder F that moves while floating by the vibration of the trough 1 without losing heating energy.
And the ferrite powder F can be dried unevenly as a whole. Further, since the ferrite powder F does not scatter from the box body 3 to the outside or other ferrite powder enters the inside of the box body 3 from the outside, it is possible to avoid affecting the working environment and the ferrite powder.

In addition, the bellows-like cover 5 expands and contracts with the vibration of the trough 1 so as not to hinder the vibration of the trough 1 and, of course, functions so as not to transmit the vibration of the trough 1 to the box 3 side. it can.

When the far-infrared heaters 40a, 40b,... Are provided as the heaters 4, the radiant heat from the far-infrared heaters 40a, 40b,.
40b... And the ferrite powder F have a small loss due to air or water vapor, so that the heating efficiency can be further improved. Also, even when heating ferrite particles having a large particle diameter, heating is performed from the inside of the ferrite particles,
Even ferrite powders having different particle diameters can be dried uniformly. Further, the temperature control of the far-infrared heater is simple, and the setting of the heating temperature can be easily changed according to the characteristics of the ferrite powder.

In this apparatus for drying ferrite powder, the box body 3 can be easily opened and closed by flipping up and rotating as a whole, so that the inside can be easily cleaned and even if the type of ferrite powder changes, it can be easily handled. Also, trough 1
It can also be applied to batch-type drying by closing and closing the inlet and outlet sides of the trough 1 and vibrating or stopping the trough 1 up and down.

Effect of the Invention As described above, according to the ferrite powder drying device of the present invention, the transmission of the vibration of the trough side to the box body side can be suppressed by the bellows-like cover, so that the mechanical durability of the box body side is reduced. Damage due to vibration on the trough side can be prevented. In addition, since the space between the trough and the box body is sealed with a bellows-like cover, the flow of heating energy generated from the box body side is prevented, and the ferrite powder can be vibrated in the trough and dried efficiently and evenly while the ferrite powder is vibrated. It also avoids affecting the working environment and the ferrite powder by preventing the powder from scattering outside the box body or other ferrite powder from entering the inside.

[Brief description of the drawings]

FIG. 1 is a side view showing a ferrite powder drying apparatus according to the present invention in a cutout state of a right half, and FIG. 2 is a front view showing the same drying apparatus. 1: trough, 2: trough vibration mechanism, 3: box body, 4: heater, 5: bellows-like cover, F: ferrite powder.

Claims (1)

(57) [Claims] 1. A trough (1) which moves and conveys ferrite powder (F) supplied from an inlet side and discharges it from an outlet side, and a trough (1) provided at a lower side of the trough (1). A vibrating mechanism (2) for vibrating the housing, and a hollow substantially box-shaped box body (3) installed on the upper side with the open side facing the trough (1) at a distance from the trough (1). A heater (4) mounted inside the box body (3) for heating and drying the ferrite powder (F) contained in the trough (1), and further covering the entire length of the trough (1). The bellows-like cover (5) that can be wrapped is provided around the open side circumference of the box body (3) and the trough (1)
A device for drying ferrite powder, wherein the space between the ferrite powder and the box body (3) is sealed.