KR101213561B1 - Melting furnace attached to agitation apparatus and agitation apparatus - Google Patents

Abstract

According to the present invention, a stirring device for stirring and supplying alternating magnetic fields to a melting furnace body for dissolving a raw material into a molten metal has a plurality of magnets, and a magnetic force line from any of these magnets is used in the molten metal in the melting furnace body. These magnets are arranged to return to other magnets after passing through them, and these magnets are attached along an inclined S-inclined surface at an angle with respect to the horizontal plane, and are made rotatable about an axis substantially perpendicular to the inclined plane. .

Magnetic field generating part, hinge, housing, support.

Description

Melting furnace attached to agitation apparatus and agitation apparatus}

BRIEF DESCRIPTION OF THE DRAWINGS The terminal explanatory drawing of embodiment of this invention, and the expanded figure of each part.

2 is an end explanatory diagram of an operating state of FIG. 1;

3 is a plan view and a side view showing an arrangement example of the permanent magnet of FIG.

4 is a plan view showing another example of an arrangement example of a permanent magnet;

5 is a terminal explanatory diagram showing another example of the embodiment of the present invention;

6 is a plan view and a longitudinal explanatory diagram of an example of a furnace to which the apparatus of FIG. 1 is applied;

Description of the Related Art [0002]

1: floor 2: frame

3: magnetic field generating unit 4: hinge

6 housing 12 stirring device

25 melting furnace 30 molten metal

The present invention relates to a melting furnace with a stirring device and a stirring device.

Conventionally, for example, an aluminum melting furnace including a stirring device in a melting furnace for melting aluminum for recycling, a mechanical stirring device for directly stirring by inserting a rotary motion body in the furnace, a pressure-sensitive stirring device for sucking and stirring the molten metal from a negative pressure pump, and fixing There has been an electronic stirring device for supplying a three-phase alternating current to a magnetic pole to generate a moving magnetic field, and stirring with an electromagnetic force based on the magnetic field.

The above-mentioned mechanical stirring device stirs the rotating body directly in a hot water bath, so that it cannot be said to have sufficient durability as the device, and furthermore, there are problems such as troublesome operation and management, and complexity. In the pressure-sensitive stirring device, operability was poor and it was not spread very much. In addition, the electronic stirring device requires a large current, the power consumption is large, the operating cost is increased, and it is also necessary to pay close attention to the cooling of the coil, and the entire apparatus is expensive, and these problems reduce the penetration rate. There is this.

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and an object thereof is to provide a melting furnace and a stirring device capable of reliably dissolving input raw materials, which is inexpensive, has good operability, has low operating costs.

The present invention comprises a melting furnace body for dissolving raw materials to form a molten metal, and a stirring device for stirring the molten metal in the melting furnace body by applying an alternating magnetic field to the melting furnace body, wherein the stirring device has a plurality of magnets. The magnet is disposed so that the magnetic force line from any of the magnets passes through the molten metal in the melting furnace body and then returns back to the other magnet, and the magnets are attached along the inclined surface inclined at an angle with respect to the horizontal surface. An agitator melting furnace is provided that enables rotational movement about an approximately vertical axis.

In addition, the present invention is a stirring device for stirring the molten metal in the melting furnace body by giving a stirring magnetic field to the melting furnace body, the stirring device has a plurality of magnets, the magnetic force lines from any of the magnets is the A magnet is arranged to return to another magnet after passing through the melt, and the magnets are also attached along an inclined inclined plane at an angle to the horizontal plane, allowing stirring to rotate about an axis approximately perpendicular to the inclined plane. Provide a device.

Fig. 1A shows the non-use state of the embodiment of the present invention, and Fig. 2 shows the state in use. 1B and 1C are enlarged views of a part of FIG. 1A, FIG. 1B is a plan view of a part of the apparatus of FIG. 1A from above, and FIG. 1C is a view of a part from the same direction as in FIG. 1A. In FIG. 1A, the frame 2 is provided on the floor 1. On this frame 2 a magnetic field generating part 3 is attached to enable the undulation rotational movement about the hinge 4, ie around an almost horizontal axis perpendicular to the ground. That is, the magnetic field generating section 3 has a hollow housing (support) 6, the housing 6 of which is substantially horizontal as can be seen in FIGS. 1A and 2 with the hinge 4 as the center. It is attached on the frame 2 so as to be able to swivel around. Substantially the ups and downs of the housing 6 are carried out around the almost horizontal axis of the hinge 4 by lifting the left side away from the support 2A of the frame 2 and lowering it back. Various mechanisms can be employed as a mechanism for causing this operation. In the illustrated embodiment, a screw mechanism is employed. Of course, a gear mechanism can also be employed. In other words, in Fig. 1A, the support lever 9 fixed to the frame 2 is axially supported in a rotatable manner about its axis (an almost vertical axis). In particular, as can be seen from Fig. 1C, the handle 9A for rotational driving is fixed to a substantially central portion of the drive lever 9 in the longitudinal direction. On the upper side of the drive lever 9, a so-called male screw portion 9B having a screw is formed. An almost spherical male screw 9C is screwed into this male screw portion 9B. The screw portion 9C moves up and down by the rotational movement of the screw portion 9B. In particular, as can be seen in Fig. 1B, the driven member 10, 10 fixed to the housing 6 is supported by the screw portion 9C by the transverse shafts 9D, 9D so as to be mutually rotatable. It is. In addition, as shown in FIG. 1C, the driven members 10 and 10 are formed with slits 10A and 10A in the longitudinal direction and are slidable between the axes 9D and 9D. Accordingly, when the drive lever 9 is rotated by the handle 9A, the male screw 9C moves up and down, whereby the driven members 10 and 10 rotate around the axes 9D and 9D. Further, the driven members 10, 10 are moved so that the shafts 9D, 9D slide in the slits 10A, 10A, and the magnetic field generating portion 3 is lifted, for example, as shown in FIG. In other words, the housing 6 is rotated up and down around the hinge (4). Here, by adjusting the rotational movement amount of the handle 9A, the amount of ups and downs of the housing 6 can be controlled. In addition, the mechanism for ups and downs of the housing 6 is not limited to what was mentioned above.

In the housing 6, a magnetic field generating device (stirrer) 12 is provided. That is, the magnetic field generating device (stirrer) 12 has a mounting table 13 fixed to the inner bottom of the housing 6, and a drive motor 14 of continuous rotational speed is attached to the mounting table 13. . The shaft of this drive motor 14 is connected to the shaft 17A of the magnet base (rotational motion plate) 17 via the coupling 15. This shaft 17A is supported by the bearing 20 located in the center part of the stay 9 which fixed both ends inside the housing 6. Also, on the magnet base 17, rod-shaped permanent magnets 22, 22, ... are fixed, as can be seen in FIGS. 3A and 3B. Each permanent magnet 22 is a magnetic pole on both the upper and lower sides. These permanent magnets 22, 22, ... are arranged so that the magnetic poles on the upper surface thereof are different poles from neighboring ones. These two neighboring permanent magnets constitute a magnet pair, where two pairs of magnet pairs are installed. The permanent magnets 22, 22, ... may arrange four pairs of magnet pairs as shown in FIG. By such a configuration, the rotational motion of the drive motor 14 is transmitted to the magnet pair, that is, the permanent magnets 22, 22..., Via the coupling 15 and the magnet base 17.

Above the housing 6 (magnetic field generating section 3), a non-magnetic melting furnace (melting furnace main body) 25 is provided in a fixed state by a mechanism (not shown). The bottom portion 25A of the melting furnace 25 is inclined by an angle θ as can be seen in FIG. 1A. As shown in FIG. 2, when the housing 6 (magnetic field generating part 3) is lifted up over the hinge 4, the magnetic force lines are actively used to contact the upper surface of the housing 6 without any gap. .

In order to use the apparatus of FIGS. 1 and 2, the housing 6 (magnetic field generating portion 3) is lifted around the hinge 4 in the state of FIG. 1 to the state of FIG. do. In this state of FIG. 2, the magnetic force lines from the permanent magnets 22, 22, ... pass through the inside of the molten aluminum 30, such as molten aluminum, as shown in FIG. In this state of FIG. 2, aluminum in the melting furnace 25 is first melt | dissolved by the burner etc. which are not shown in figure, and it is set as the molten metal 30. FIG. When the permanent magnets 22, 22,... Are rotated by the motor 14 while putting aluminum debris into the molten metal in this state, the magnetic force lines from these move while penetrating the molten metal 30. In other words, an alternating magnetic field is applied to the molten metal 30. As a result, rotational flow occurs, and the molten metal 30 begins to rotate about an axis almost perpendicular to the magnet base 17, that is, in an inclined state in the melting furnace 25. That is, the surface of the molten metal 30 rotates substantially in parallel with the surface of the magnet base 17 (upper surface of the lifted permanent magnet 22). That is, in the present apparatus, as described above, the permanent magnet 22 is rotated in a state inclined by the angle θ. If it is horizontal (θ = 0 °), the molten metal 30 rotates in a concave state at its center. In this case, the molten metal 30 rotates as the flow is close to the rectification. This does not dissolve aluminum efficiently. On the other hand, in this embodiment, it inclines by the angle (theta). For this reason, as shown in Fig. 2, the melt 30 is rotated in a state where the liquid level is inclined by the magnetic force line. For this reason, the movement of the molten metal 30 becomes an anomalous severe movement. Accordingly, even when the raw material (aluminum shavings) is introduced into the molten metal, the raw material does not float in the molten metal as it is, and the raw materials are efficiently mixed well in the molten metal 30, and the input raw material is reliably dissolved. do.

In order to perform such stirring efficiently, as the strength of the permanent magnet 22, it is preferable that the magnetic field strength inside the bottom of the melting furnace 25 shall be 0.2-0.2T or more. In addition, the rotational speed of the permanent magnet 22 (magnet pair), that is, the magnet base 17 is preferably 60-250 rpm when the permanent magnet 22 is arranged to be two pairs of magnet pairs as shown in FIG. Do. In other words, this rotational movement speed is the number of permanent magnets 22, 22... Set on the magnet base 17, that is, the permanent magnets 22, 22 of pairs having different magnetic poles among the permanent magnets 22 ( Magnet pair). As shown in FIG. 3, two pairs of magnets are about 60-250 rpm. As shown in FIG. 4, four pairs are about 30-125 rpm, and eight pairs are about 15-62.5 rpm. That is, in the case of 12 pairs of magnet pairs, it is preferable to set it as (120 / n)-(150 / n) rpm. These rotational speeds are as follows. When the number of magnet pairs passing through the reference point per second by the rotational movement of the magnet base 17 is one, the period is defined as 1 Hz. This means that it is preferable to rotate at a rotational speed of about 2-8.33Hz.

In addition, the melting furnace 25 may not necessarily be inclined by the angle θ, and may be melted even if the inclination is less than or equal to (θ) or even if θ = 0 or horizontal as shown in FIG. 5.

6A and 6B show an embodiment in which the above-described apparatus of FIGS. 1 and 2 is used as the auxiliary furnace 41, and the molten molten metal is flowed into the larger furnace 42 of a larger shape. . That is, the molten metal 43 dissolved in the auxiliary furnace 41 flows into the large furnace 42 on the frame 46 from the gap 44 of the partition 45 between the auxiliary furnace 41 and the large furnace 42. do. The same reference numerals are given to the same members in FIG. 6 and in FIGS. 1, 2, and the like.

According to the present invention as described above, the molten metal in the melting furnace can be efficiently rotated to reliably dissolve the input material.

The melting furnace and stirring apparatus with a stirring apparatus which concerns on this invention as described above are inexpensive, it is easy to operate, it is low in operating cost, and it has the effect which can melt | dissolve input material reliably.

Claims (30)

A melting furnace body for dissolving raw materials to form a molten metal; And A stirring device for stirring the molten metal in the melting furnace body by applying an alternating magnetic field to the melting furnace body, The stirring device, Having a plurality of permanent magnets, each magnet having magnetic poles on its upper and lower surfaces, magnets arranged such that the magnetic force lines from one of the permanent magnets pass through the molten metal in the furnace body and then return to another magnet; The magnet is attached to the inclined surface of the rotary motion plate inclined with respect to a horizontal plane forming an angle θ between the stirring device and the bottom surface of the melting furnace body and forming the angle θ between the support and the stirring device. It is possible to rotate on one surface around the axis perpendicular to the inclined surface, The magnetic poles of the upper surface of the plurality of permanent magnets adjacent to each other in the circumferential direction of the rotary motion plate are different from each other, The stirring device is provided below the melting furnace body and is provided on an adjustable support by rotating the angle θ relative to one side of the support and rotating about a horizontal axis. Melting furnace with stirring device. The method of claim 1, The bottom surface of the melting furnace body is inclined along the inclined surface of the stirring device Melting furnace with stirring device. The method of claim 1, Rotational speed of the magnet is adjustable Melting furnace with stirring device. The method of claim 1, Further comprising a motor for rotating the permanent magnet, The drive speed of the motor is variable or variable Melting furnace with stirring device. The method of claim 1, The support is a housing Melting furnace with stirring device. The method of claim 5, The support is mounted to a frame fixed to the floor so as to be rotatable about a horizontal axis of the hinge. Melting furnace with stirring device. The method of claim 6, A drive mechanism for undulating one side of the support and rotating the support about a horizontal axis, The drive mechanism is a screw mechanism or a gear mechanism Melting furnace with stirring device. The method of claim 7, wherein The drive mechanism may move the support from a parallel position to a position where the inclination of the support is parallel to the inclined bottom surface of the melting furnace. Melting furnace with stirring device. The method of claim 7, wherein The drive mechanism may rotate the housing such that the housing is moved such that the upper surface of the housing contacts the inclined bottom surface of the melting furnace body. Melting furnace with stirring device. The method of claim 1, The magnetic force of the permanent magnet is about 0.2T-0.3T inside the bottom of the melting furnace Melting furnace with stirring device. The method of claim 1, When a pair of neighboring magnets is used as a magnet pair and n pairs of magnets are provided on the rotary motion plate, the rotary motion plate is in a range of (120 / n) to (500 / n) (rpm). Rotational in Melting furnace with stirring device. Melting furnace with stirring device according to claim 1; And Having another melting furnace connected to the melting furnace body Melting furnace with stirring device. As a stirring device for applying an alternating magnetic field to the molten metal in the furnace body, It has a plurality of permanent magnets, each magnet has a magnetic pole on its upper and lower surfaces, the magnets are arranged so that the magnetic force lines from one of the permanent magnets passes through the molten metal in the furnace body, and then return to another magnet The magnet is formed along an inclined surface of the rotary motion plate inclined with respect to a horizontal plane which forms an angle θ between the stirring device and the bottom surface of the melting furnace body and forms the angle θ between the support and the stirring device. It is attached, it is possible to rotate on one surface around the axis perpendicular to the inclined surface, The magnetic poles of the upper surface of the plurality of permanent magnets adjacent to each other in the circumferential direction of the rotary motion plate are different from each other, The angle θ is provided on the adjustable support by undulating about one side of the support and rotating about a horizontal axis. Stirring device. 14. The method of claim 13, The rotational speed of the magnet is adjustable Stirring device. 14. The method of claim 13, Further comprising a motor for rotating the magnet, The drive speed of the motor is variable or variable Stirring device. 14. The method of claim 13, The support is a housing Stirring device. 14. The method of claim 13, The support is mounted to a frame fixed to the floor so as to be rotatable about a horizontal axis of the hinge. Stirring device. 18. The method of claim 17, A drive mechanism for undulating one side of the support and rotating the support about a horizontal axis, The drive mechanism is a screw mechanism or a gear mechanism Stirring device. 19. The method of claim 18, The drive mechanism may move the support from a parallel position to a position where the inclination of the support is parallel to the inclined bottom surface of the melting furnace. Stirring device. delete delete delete delete delete delete delete delete delete delete delete

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