JPH0737112Y2 - Chip melting furnace - Google Patents

Description

[Detailed Description of the Invention] [Industrial field of application] The present invention relates to a chip melting furnace used for reusing chips generated by cutting a light alloy such as aluminum.

[Prior art] To melt the chips, it is easy to think that they can be heated with a simple burner, but in the case of chips made of light alloys such as aluminum, if the burner's heating power is too strong Will burn without being melted, and if the heat treatment is weakened and the melting process is performed, it will take time. In order to prevent such a problem, in the prior art, as shown in FIG.
Then, make the required seed water 14 and put the chips 13 on it and place it in the electromagnetic trough.
The molten metal 15 is pumped up from the melting furnace 11 in 12 and poured from above the cutting chips 13, the cutting chips 13 are wrapped in the seed bath 14, heated in the melting furnace, and this operation is repeated to melt the cutting chips 13. It was

[Problems to be solved by the device]

However, such a conventional melting method uses the electromagnetic trough 12 and has the following drawbacks even if it seems to be an advanced technique at first glance.

(1) Since the hot water is drawn up by using electromagnetic force, it costs a lot of electricity.

(2) Equipment costs are high.

(3) Maintenance cost is required.

(4) Chips cannot be smoothly caught in the seed water.

The present invention solves such problems and provides a chip melting furnace for melting chips such as light alloys that can efficiently and economically melt chips. To that end.

[Means for Solving the Problems]

A chip melting furnace according to the present invention for achieving the above object has the following configuration. That is, the furnace body is divided into two chambers, a chip processing chamber and a temperature raising chamber, the chip processing chamber and the temperature raising chamber are communicated with each other at the lower part of both chambers, and the chip processing chamber is provided around the horizontal axis. A chip winding device including a rotating blade that is rotated in the vertical direction and a rotating blade driving means is provided, and a heating device is provided for the temperature raising chamber,
The chip melting furnace is characterized in that the rotary blade is composed of a flat plate linearly extending to the tip in the radial direction of rotation.

[Action]

In the chip melting furnace of the present invention described above, in the chip processing chamber,
An appropriate amount of chips can be reliably and reliably taken into the hot water by the chip-winding device with rotating blades, enters the temperature raising chamber, and can be melted by the heating device in the temperature raising chamber, so the chips can be efficiently and economically melted. can do. In addition, since the rotary blades are rotated in the vertical direction, when the rotary blades rotate from top to bottom, they push the cutting chips into the seed hot water and work to push the chips into the hot water smoothly. You can In this case, since the rotary blade is composed of a flat plate linearly extending to the tip in the radial direction of rotation, the chips can be effectively pushed to the tip of the blade, and the effect of pushing the chips is large.

〔Example〕

A preferred embodiment of the chip melting furnace of the present invention applied to melt aluminum chips will be described below with reference to the drawings.

FIG. 1 is a sectional view showing the structure of a chip melting furnace according to an embodiment of the present invention. Reference numeral 2 in the drawing denotes a furnace body, and the furnace body 2 is composed of a temperature raising chamber 2b and a chip processing chamber 2a which are partitioned from each other. The temperature raising chamber 2b is shielded by a refractory material in all directions, except for the communicating portion 2c with the chip processing chamber 2a, and the heating device 3 ( For example, a gas burner and a heavy oil burner) are provided.

The other chip processing chamber 2a is a temperature raising chamber in the lower communication part 2c.
It is connected to 2b so that the molten metal can freely flow into the temperature raising chamber 2b.

As shown in FIG. 1, the chip processing chamber 2a is provided with a chip winding device 1 including a rotary blade 1a and a rotary blade driving device 1b which are vertically rotated about a horizontal axis. . The rotary blade 1a is composed of a flat plate linearly extending to the tip in the radial direction of rotation. The rotary blade 1a is installed at the position where the lower part of the rotation path is immersed in the molten metal,
Above the side wall of 2a, it is connected to a rotary blade driving device 1b provided outside the chip processing chamber 2a. The height of the chip winding device 1 can be adjusted by a height adjusting device 6 provided below the rotary blade driving device 1b.

When this chip winding device 1 is applied to aluminum chips, the radius r of the rotary blade is 180
A range of ~ 210 (mm) was desired. It was also found that the blade thickness t is preferably 15 to 20 (mm) and the width H is preferably 70 to 120 (mm). The rotation speed of the rotary blade 1a is 25 to 40 rpm.
It has been found that a range of is desirable.

In the method of using the chip melting furnace configured as described above, first, an aluminum ingot is first inserted into the temperature raising chamber 2b of the furnace body 2, and the heating device 3 is first used to prepare the seed water 4.
Then, an appropriate amount of chips 5 to be melted is dropped onto the upper surface of the molten seed water 4 in the chip processing chamber 2a and supplied.

Next, the chip winding device 1 is driven, and the chips 5 are wound while being pushed into the molten metal by the rotary blade 1a. in this case,
Since the rotary blade 1a is composed of a flat plate extending linearly to the tip in the radial direction of rotation, the chips 5 can be effectively pushed to the tip portion of the rotary blade 1a, and the chip pushing effect is great.

The swarf 5 entrapped is caused by the heat of the molten metal, and the insufficient portion is heated by the heating device 3 of the heating chamber 2a when it enters the heating chamber 2a.
It is heated by and by repeating this process,
Dissolution of aluminum chips can be performed efficiently and economically.

[Effect of device]

According to the chip melting furnace configured as described above, the melting of chips, which has been difficult to perform smoothly and economically in the past, can be efficiently performed by the simple means of the rotary blade of the chip winding device. Can be achieved economically. Moreover, since the rotary blades are made to rotate in the vertical direction, when the rotary blades rotate from top to bottom, the effect of pushing the chips into the molten metal works, and the chips can be smoothly pushed into the molten metal. . In this case, since the rotary blade is composed of a flat plate that linearly extends to the tip in the radial direction of rotation, chips can be effectively pushed to the tip of the rotary blade, and the effect of pushing chips is great.

[Brief description of drawings]

 1 is a sectional view of a chip melting furnace according to an embodiment of the present invention, FIG. 2 is a partial sectional view taken along line II-II of FIG. 1, and FIG. 3 shows a conventional chip melting furnace. It is a side view. 1 ... Chip winding device 1a ... Rotary blade 1b ... Rotary blade driving device 2 ... Furnace body 2a ... Chip processing chamber 2b ... Raising chamber 3 ... Heating device

Claims (1)

[Scope of utility model registration request] 1. A furnace body is divided into two chambers, a chip processing chamber and a temperature raising chamber, the chip processing chamber and the temperature raising chamber communicate with each other at a lower portion of both chambers, and a horizontal axis is provided for the chip processing chamber. A chip winding device consisting of a rotary blade that rotates in a vertical direction around the core and a rotary blade driving means is provided, a heating device is provided for the temperature raising chamber, and the rotary blade reaches the tip in the radial direction of rotation. A chip melting furnace comprising a flat plate extending linearly.