JP2002307159A - Vessel for supplying molten metal - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent clogging of piping and a hole, used for adjusting an inner pressure. SOLUTION: A vessel for supplying molten metal is provided with the vessel in which the molten metal can be held, a hatch arranged so as to be openable/ closable at the upper surface part of the vessel and provided with a through-hole for adjusting the inner pressure, through which the inner side communicates with the outer side of the vessel, and a passage which is arranged at the side surface of the vessel and through which the inner side communicates with the outer side and the molten metal is made to flow. For example, the hatch is arranged nearly at the center of the upper surface part of the vessel.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a container for supplying molten metal used for transporting, for example, molten aluminum.

[0002]

2. Description of the Related Art In a factory where aluminum is formed by using a large number of die-casting machines, an aluminum material is often supplied not only inside the factory but also outside the factory. In this case, a ladle containing molten aluminum is transported from a factory on the material supply side to a factory on the molding side, and the material in the molten state is supplied to each die casting machine. .

A ladle conventionally used has a structure like a teapot in which a supply pipe is attached to a side wall of a container body in which molten metal is stored. Of molten metal is supplied to the holding furnace.

[0004]

However, in such a ladle, for example, the ladle is tilted using a forklift, and such a work is not necessarily safe. Further, since it is necessary to provide a forklift with a rotating mechanism to incline the ladle, the structure becomes special, and furthermore, an operator skilled in operation of the forklift is required for such operation. was there.

Therefore, the present inventors have proposed a molten metal supply system utilizing a pressure difference. In this system, a pipe for drawing molten metal to the outside is provided in a closed container, and a pipe for supplying a pressurized gas is connected to this container, and by pressurizing the inside of the container, the metal derivation is performed. The molten metal is led out of the pipe to an external holding furnace, for example, on the molding side.

However, the container having the above-described structure has a problem that the pipe for supplying the pressurized gas is easily clogged. In particular, in the above system, for example, the container is often shaken because it is mounted on a truck and transported from a factory to another factory via a public road, so that the liquid level of the molten metal in the container tilts or drops. Scatter in the container, and these adhere to the piping for supplying the pressurized gas. And, for example, the pipes are clogged due to such repeated adhesion.

[0007] In view of the above circumstances, a main object of the present invention is to provide a molten metal supply container capable of preventing clogging of piping and holes used for adjusting the internal pressure.

[0008]

Means for Solving the Problems To solve such problems, the following configuration is adopted.

The present invention provides a container capable of containing a molten metal, a hatch provided on the upper surface of the container so as to be openable and closable, and having a through hole for adjusting an internal pressure communicating between the inside and the outside of the container. A flow path provided on a side surface of the container and communicating between the inside and the outside of the container and capable of flowing the molten metal.

[0010] The invention is characterized in that the hatch is provided substantially at the center of the upper surface of the container.

According to the present invention, there is provided a pipe which is attached to the through hole, protrudes upward from an upper surface of the container, is bent horizontally at a predetermined height, and has a connection part drawn out in a horizontal direction. It is further characterized by comprising:

The present invention is characterized in that the pipe is detachably screwed into the through hole.

The present invention is a portable container for supplying molten metal, which has a flat surface on the bottom rear surface for self-supporting,
A container capable of accommodating a molten metal, a hatch provided on the upper surface of the container so as to be openable and closable, and provided with a through hole for internal pressure adjustment communicating between the inside and the outside of the container, and a hatch provided on a side surface of the container And a flow path communicating between the inside and the outside of the container and allowing the molten metal to flow therethrough.

The invention is characterized in that the hatch is provided substantially at the center of the upper surface of the container.

According to the present invention, there is provided a pipe which is attached to the through hole, protrudes upward from the upper surface of the container, is bent horizontally at a predetermined height, and has a connection part drawn out in the horizontal direction. It is further characterized by comprising:

The present invention is characterized in that the pipe is detachably screwed into the through hole.

The present invention relates to a container for supplying molten metal used in a system for flowing molten metal between the outside and the outside without tilting, a container capable of containing the molten metal, and an upper surface of the container. A hatch provided with a through hole for internal pressure adjustment that is provided to be openable and closable on the part and communicates the inside and outside of the container, and is provided on a side surface of the container, communicates the inside and outside of the container, and circulates the molten metal. And a flow path capable of performing the operation.

[0018] The present invention is characterized in that the container is provided with a leg portion provided on the bottom rear surface of the container and into which a fork of a forklift can be inserted.

The invention is characterized in that the hatch is provided substantially at the center of the upper surface of the container.

According to the present invention, there is provided a pipe which is attached to the through hole, protrudes upward from the upper surface of the container, is bent horizontally at a predetermined height, and has a connection part drawn out in the horizontal direction. It is further characterized by comprising:

According to the present invention, the pipe is detachably screwed into the through hole.

The present invention is a portable container for supplying molten metal, having a flat surface on the bottom rear surface for self-supporting,
A container having a through-hole for internal pressure adjustment provided at a position substantially at the center of the upper surface portion, which is capable of containing a molten metal and communicating between the inside and the outside, and provided on a side surface of the container and communicating between the inside and the outside of the container And a flow path through which the molten metal can flow.

The invention is characterized in that the hatch is provided substantially at the center of the upper surface of the container.

[0024] The present invention is characterized in that the container is provided with a leg portion provided on the back surface of the bottom portion of the container and into which a fork of a forklift can be inserted.

According to the present invention, there is provided a pipe which is attached to the through-hole, protrudes upward from the upper surface of the container, is bent horizontally at a predetermined height, and has a connection part drawn out in the horizontal direction. It is further characterized by comprising:

The present invention is characterized in that the pipe is detachably screwed into the through hole.

[0027] The present invention is characterized in that the container further comprises a hatch provided substantially at the center of the upper surface of the container, and the through hole is provided in the hatch.

The present invention is characterized in that it is used for a system for flowing molten metal to the outside without tilting.

According to the present invention, there is provided a container capable of containing a molten metal, a hatch provided on the upper surface of the container so as to be openable and closable, and having a through hole for adjusting an internal pressure communicating between the inside and the outside of the container. It communicates with the inside and outside of the container, and a flow path through which the molten metal can flow, attached to the through hole, protrudes upward from the upper surface of the container, and horizontally at a predetermined height. And a pipe that is bent and has a connection portion that is led out in the horizontal direction.

According to the present invention, there is provided a container provided with a through-hole for adjusting the internal pressure communicating between the inside and the outside, and capable of accommodating a molten metal, and communicating the inside and the outside of the container with the molten metal to distribute the molten metal. And a pipe that is attached to the through hole, protrudes upward from the upper surface of the container, is bent in a horizontal direction at a predetermined height, and a connection portion is led out in the horizontal direction. It is characterized by having.

The present invention is characterized in that the pipe is detachably screwed to the container.

Usually, the container is preheated by a heater such as a gas burner before the molten metal is supplied into the container. This preheating is performed by opening the hatch and inserting a part of the heater into the container. Therefore, the hatch is opened each time molten metal is supplied into the container. In the present invention, since such a hatch is provided with a through hole for adjusting the internal pressure, it is possible to confirm the adhesion of the metal to the through hole for adjusting the internal pressure every time the molten metal is supplied into the container.
Then, for example, when metal is attached to the through hole, it may be removed each time. Therefore, in the present invention, it is possible to prevent clogging of a pipe or a hole used for adjusting the internal pressure. In the present invention, the hatch is provided with a sealing member such as a packing for ensuring airtightness inside the container. The packing is preferably one having heat resistance such as a silicone one.

[0033] The molten metal supply container of the present invention is characterized in that the hatch is provided substantially at the center of the upper surface of the container.

When the container is shaken and the liquid surface is tilted or the droplets are scattered, the change in the liquid surface and the degree to which the droplets are scattered are smaller near the center of the container than near the outer periphery. According to the present invention, the hatch is provided with a through hole for adjusting the internal pressure, and the hatch is provided substantially at the center of the upper surface portion of the container corresponding to the position where the level of the liquid surface changes and the degree of splashing of the droplets are small as described above. Therefore, metal is less likely to adhere to piping and holes used for adjusting the internal pressure. Therefore, in the present invention, it is possible to prevent clogging of a pipe or a hole used for adjusting the internal pressure.

The container for supplying molten metal of the present invention is attached to the through-hole, protrudes upward from the upper surface of the container, is bent horizontally at a predetermined height,
It further comprises a pipe led out in the horizontal direction.

In a system using the container according to the present invention, for example, a pipe from a tank for supplying a pressurized gas or a pipe from a pump for reducing pressure is connected to a pipe attached to a through hole.
Such a connection is made each time the molten metal is introduced into the container or each time the molten metal is extracted from the container. On the other hand, the container in which the molten metal is stored has a very high temperature, and the workability is poor. In the container according to the present invention, the through-hole for adjusting the internal pressure is located substantially at the center of the upper surface of the container,
If pipes extending upward are attached, the workability of the connection between the pipes as described above is very poor. On the other hand, by adopting a configuration in which the pipes are led out in the horizontal direction as described above, for example, the worker can reach the connection points between the pipes, and the work can be performed safely and easily.

The molten metal supply container of the present invention is characterized in that the pipe is detachably screwed into the through hole.

In the present invention, the pipe is configured to be detachably screwed into the through-hole, so that the pipe, which is led in the horizontal direction, can be used in a manner similar to a spanner. It can be attached and detached from. Therefore, the pipe can be easily attached and detached without using a special tool or the like. Thereby, for example, it is possible to frequently check the degree of clogging of the pipe, and it is possible to prevent the clogging of the pipe used for adjusting the internal pressure.

A container for supplying molten metal according to another aspect of the present invention can accommodate molten metal, communicates inside and outside,
A container having a through-hole for adjusting the internal pressure provided at a position substantially at the center of the upper surface portion, and a flow path communicating the inside and outside of the container and allowing the molten metal to flow therethrough, Is what you do.

As described above, in the case where the container shakes and the liquid surface is tilted or the droplets scatter, the change in the liquid surface and the degree to which the droplets scatter are smaller near the center of the container than near the outer periphery. In the present invention, since the through-hole for adjusting the internal pressure is provided substantially at the center of the upper surface portion of the container corresponding to the position where the change of the liquid level and the degree of the splattering of the droplet are small, metal is used for the internal pressure adjustment To be adhered to the piping and holes. Therefore, in the present invention, it is possible to prevent clogging of a pipe or a hole used for adjusting the internal pressure.

In the molten metal supply container according to the present invention, the container may further include a hatch provided substantially at a center of an upper surface of the container, and the through-hole may be provided in the hatch. It is a feature.

As described above, the container is usually preheated by a gas burner before the molten metal is supplied into the container. This preheating is performed by opening the hatch and inserting the gas burner into the container. Therefore, the hatch is opened each time molten metal is supplied into the container. In the present invention, since such a hatch is provided with a through hole for adjusting the internal pressure, it is possible to confirm the adhesion of the metal to the through hole for adjusting the internal pressure every time the molten metal is supplied into the container. Then, for example, when metal is attached to the through hole, it may be removed each time. Therefore, in the present invention, it is possible to prevent clogging of a pipe or a hole used for adjusting the internal pressure.

The molten metal supply container of the present invention is attached to the through hole, protrudes upward from the upper surface of the container, is bent horizontally at a predetermined height, and is led out in the horizontal direction. A pipe is further provided.

A container for supplying molten metal according to still another aspect of the present invention can accommodate molten metal and has a first
A container having an opening, and a flow path communicating the inside and the outside of the container and allowing the molten metal to flow therethrough; and a fixedly disposed so as to cover the first opening of the container, substantially at the center. A lid having a second opening smaller in diameter than the first opening, and a through-hole for internal pressure adjustment provided on the upper surface of the lid so as to be openable and closable and communicating between the inside and the outside of the container. And a hatch.

In the present invention, since such a hatch is provided with a through-hole for adjusting the internal pressure, the adhesion of the metal to the through-hole for adjusting the internal pressure can be confirmed every time the molten metal is supplied into the container. . Therefore, in the present invention, it is possible to prevent clogging of a pipe or a hole used for adjusting the internal pressure. According to the present invention, the hatch is provided with a through hole for adjusting the internal pressure, and the hatch is provided substantially at the center of the upper surface portion of the container corresponding to the position where the level of the liquid surface changes and the degree of splashing of the droplets are small as described above. Therefore, metal is less likely to adhere to piping and holes used for adjusting the internal pressure. Therefore, in the present invention, it is possible to prevent clogging of a pipe or a hole used for adjusting the internal pressure. Further, in the present invention, since the hatch is provided on the upper surface of the lid, the distance between the back surface of the hatch and the liquid surface is longer than the distance between the rear surface of the lid and the liquid surface by the thickness of the lid. Therefore, the possibility that metal adheres to the back surface of the hatch provided with the through holes is reduced. Therefore, in the present invention, it is possible to prevent clogging of a pipe or a hole used for adjusting the internal pressure.

The container may include a container body and a pipe disposed outside the container body from a position deviated from the center of the container body.

In contrast to the fact that the pipe is clogged as soon as it is immersed in the molten metal in the vessel, in the present invention, the pipe is displaced from the center of the vessel body. When the molten metal is discharged and returned to a horizontal position in this state, a space is formed between the lower end of the pipe and the molten metal surface, thereby preventing the pipe from being clogged.

[0048] The container of the present invention comprises: a first frame constituting a first space; a second frame disposed so as to constitute a second space between the first frame; At least one connecting the first space and the second space;
And two passages.

In the present invention, if the second space is evacuated to a vacuum, the heat is kept warm, and the deterioration of the heat insulating performance due to the aging of the heat insulating material can be compensated. When the first space is pressurized from the second space side through the passage, the pressurized gas is preheated and then supplied into the container. Therefore, a decrease in the temperature of the molten metal can be kept small. In particular, in the final stage of the pumping, intermittent discharge of the molten metal and the gas is likely to occur, and in this case, the temperature of the molten metal is deprived by the pumping gas and the viscosity increases. Therefore, by preheating the pumping gas, a decrease in the temperature of the molten metal can be suppressed, and clogging of the pipe can be effectively prevented. In addition, safe hot water supply can be stopped, and the time required for stopping hot water supply can be shortened.

Further, according to the present invention, the first space can be leaked from the second space through a passage. When the pumping is stopped, the pressurized gas in the first space leaks and returns to normal pressure. At that time, the gas in the first space is very hot because it coexists with the molten metal. Leaking directly would damage the leak valve. On the other hand, by performing the leak in the first space from the second space side through the passage, the thermal load on the leak valve can be reduced, and the reliability of the device can be improved and the life can be extended. it can.

[0051] The container of the present invention comprises: a first frame constituting a first space; a second frame disposed so as to constitute a second space between the first frame; At least one connecting the first space and the second space;
And a first valve connected to the inside of the container body, and a second valve inserted on the passage.

According to the present invention, the time required for the hot water supply stop operation can be reduced, or the reliability of the stop operation can be improved. That is, the pressure in the second space is reduced, and when the hot water supply is stopped, first, the first valve is opened to restore the pressure in the first space. Then, the second valve is opened to reduce the pressure in the first space to a negative pressure. I do. Thereby, the hot water supply can be completely stopped, and the molten metal in the pipe can be returned to the container side.

The container of the present invention includes a container main body and a pipe connected near the bottom of the container main body and having at least an upward slope.

The container of the present invention comprises a container main body, a partition wall which divides the inside of the container main body into two parts while communicating with each other in the vicinity of the lower part, and a gutter portion connected to one of the divided spaces of the partition wall.

The container according to the present invention comprises: a container body; a partition wall which divides the container body into two parts while communicating with each other in the vicinity of the lower portion; a gutter portion connected to one of the separated spaces of the partition wall; And a lid provided thereon.

That is, if the piping is inside the main body, the maintenance is very likely to be clogged.

In the present invention, one of the spaces separated by the partition is used in place of the piping, and for example, the hot water is supplied from the opening by overflowing from the opening. This greatly simplifies the maintenance and hardly causes the clogging, and the clogging can be recovered by the normal maintenance.

[0058]

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is a diagram showing the overall configuration of a metal supply system according to one embodiment of the present invention.

As shown in the figure, the first factory 10 and the second factory 10
The factory 20 is provided, for example, at a place distant from a public road 30.

In the first factory 10, a plurality of die cast machines 11 as use points are arranged.
Each die cast machine 11 is for molding a product having a desired shape by injection molding using molten aluminum as a raw material. Examples of such products include parts related to automobile engines. Further, as the molten metal, not only an aluminum alloy but also an alloy mainly composed of other metals such as magnesium and titanium may be used. Each die cast machine 11
, A holding furnace (hand holding furnace) 12 for temporarily storing the molten aluminum before the shot is arranged.
The holding furnace 12 stores a plurality of shots of molten aluminum, and the molten aluminum is injected into the die casting machine 11 from the holding furnace 12 through the ladle 13 or the pipe for each one shot. It has become. Each holding furnace 12 has a liquid level detection sensor (not shown) for detecting the liquid level of the molten aluminum stored in the container and a temperature sensor (not shown) for detecting the temperature of the molten aluminum. Are located. The detection results of these sensors are transmitted to the control panel of each die cast machine 11 or the central control unit 16 of the first factory 10.

In the receiving section of the first factory 10, a receiving table 17 for receiving a container 100 described later is arranged. The container 100 received by the receiving table 17 of the receiving section is delivered to a predetermined die-casting machine 11 by a delivery vehicle 18 and the holding furnace 1
2 is supplied with molten aluminum.
The container 100 after the supply is returned to the receiving table 17 of the receiving section by the delivery vehicle 18 again.

The first factory 10 is provided with a first furnace 19 for melting aluminum and supplying it to the container 100. The container 100 supplied with molten aluminum by the first furnace 19 is also provided. The delivery vehicle 18 delivers the product to a predetermined die cast machine 11.

The first factory 10 is provided with a display unit 15 for displaying when the addition of molten aluminum is necessary in each die casting machine 11.
More specifically, for example, a unique number is assigned to each die cast machine 11, and the number is displayed on the display unit 15, and corresponds to the number of the die cast machine 11 for which addition of molten aluminum is necessary. The number on the display unit 15 is turned on. The operator uses the delivery vehicle 18 based on the display on the display unit 15 to
To the die cast machine 11 corresponding to the number and supply the molten aluminum. The display on the display unit 15 is performed under the control of the central control unit 16 based on the detection result by the liquid level detection sensor.

The second factory 20 is provided with a second furnace 21 for melting aluminum and supplying it to the container 100. A plurality of types of containers 100 having different capacities, pipe lengths, heights, widths, and the like are prepared. For example, the holding furnace 12 in the die cast machine 11 in the first factory 10
There are a plurality of types having different capacities depending on the capacity of the battery. However, it goes without saying that the container 100 may be unified into one type and standardized.

The container 100 to which the molten aluminum has been supplied by the second furnace 21 is placed on a transport truck 32 by a forklift (not shown). The truck 32 carries the containers 100 through the public road 30 to the vicinity of the receiving table 17 of the receiving unit in the first factory 10, and these containers 100 are received by the receiving table 17 by a forklift (not shown). . The empty container 100 in the receiving section is returned to the second factory 20 by the truck 32.

The second factory 20 is provided with a display unit 22 for displaying when it is necessary to add molten aluminum to each die casting machine 11 in the first factory 10. The configuration of the display unit 22 is substantially the same as the configuration of the display unit 15 disposed in the first factory 10. The display on the display unit 22 is performed under the control of the central control unit 16 in the first factory 10 via the communication line 33, for example. In the display unit 22 in the second factory 20, it has been determined that the molten aluminum is supplied from the first furnace 19 in the first factory 10 among the die cast machines 11 requiring the supply of molten aluminum. The die cast machine 11 is displayed so as to be distinguished from the other die cast machines 11. For example, the number corresponding to the die cast machine 11 determined as such flashes. Accordingly, it is possible to prevent the second factory 20 from erroneously supplying the molten aluminum to the die cast machine 11 determined to be supplied with the molten aluminum from the first furnace 19. Further, in addition to the above, data transmitted from the central control unit 16 is also displayed on the display unit 22.

Next, the operation of the metal supply system thus configured will be described.

The central controller 16 monitors the amount of molten aluminum in each holding furnace 12 via a liquid level detection sensor provided in each holding furnace 12. Here, when the necessity of supplying molten aluminum occurs in a certain holding furnace 12, the central control unit 16 detects the “unique number” of the holding furnace 12 by a temperature sensor provided in the holding furnace 12. "Temperature data" of the holding furnace 12
"Form data" relating to the form (to be described later), final "time data" when the molten aluminum disappears from the holding furnace 12, "traffic data" on the public road 30, and "melting aluminum" required for the holding furnace 12. The quantity data and the temperature data are transmitted to the second factory 20 via the communication line 33. In the second factory 20, these data are displayed on the display unit 22. Based on these displayed data, the operator empirically sets the container 1 in the holding furnace 12 immediately before the molten aluminum disappears from the holding furnace 12.
The delivery time of the container 100 from the second factory 20 and the temperature at the time of sending the molten aluminum are determined so that 00 arrives and the molten aluminum at that time has a desired temperature. Alternatively, these data are taken into, for example, a personal computer (not shown), and the holding furnace 1 is used just before the holding furnace 12 runs out of molten aluminum using predetermined software.
2 and the time at which the container 100 is dispatched from the second factory 20 and the temperature at the time of dispatching the molten aluminum are estimated so that the molten aluminum at that time is at a desired temperature, and the time and temperature are estimated. It may be displayed. Alternatively, the temperature of the second furnace 21 may be automatically controlled based on the estimated temperature. The amount of the molten aluminum to be contained in the container 100 may also be determined based on the above “amount data”.

Truck 3 loaded with container 100 at shipping time
2 departs and arrives at the first factory 10 via the public road 30, the container 100 is received from the truck 32 into the receiving table 17 of the receiving section.

Thereafter, the received container 100 is delivered to a predetermined die-casting machine 11 by the delivery vehicle 18 together with the receiving table 17, and the holding furnace 1
2 is supplied with molten aluminum.

As shown in FIG. 2, in this example, high-pressure air is sent from the receiver tank 101 into the sealed container 100 so that the molten aluminum contained in the container 100 is discharged from the pipe 56 and the holding furnace 12. In FIG. 2, reference numeral 103 denotes a pressure valve, and 104 denotes a leak valve.

Here, the holding furnace 12 has various heights.
Can be adjusted so that the tip of the holder becomes the optimum position on the holding furnace 12. However, depending on the height of the holding furnace 12, there is a case where the lifting mechanism alone cannot cope with the problem. Therefore, in the present system, as the “form data” relating to the form of the holding furnace 12, data relating to the height of the holding furnace 12, the distance to the holding furnace 12, and the like are sent to the second factory 20 in advance, and the second factory 20 On the side, the container 100 having the optimum form, for example, the optimum height is selected and delivered based on the data.
It should be noted that a container 100 having an optimal size according to the amount to be supplied.
May be selected and delivered.

Next, a container (pressurized molten metal supply container) 100 suitable for the system configured as described above will be described.
A description will be given based on FIG. 3 and FIG. FIG. 3 is a sectional view of the container 100, and FIG. 4 is a plan view thereof.

The container 100 has a large lid 52 disposed at an upper opening 51 of a cylindrical body 50 having a bottom. Flanges 53 and 54 are provided on the outer periphery of the main body 50 and the large lid 51, respectively, and the main body 50 and the large lid 51 are fixed by fastening the flanges with bolts 55. The main body 50 and the large lid 51 are made of, for example, metal on the outside and made of a refractory material and a heat insulating material on the inside.

At one location on the outer periphery of the main body 50, a pipe mounting portion 58 provided with a flow path 57 communicating from the inside of the main body 50 to the pipe 56 is provided, and is connected to the flow path 57 of the pipe mounting section 58. Is fixed to the pipe 56. Piping 56
Has a Γ shape, whereby the one end 59 of the pipe 56 faces downward. More specifically, piping 5
One end 59 of 6 is inclined, for example, by about 10 ° with respect to the perpendicular. By providing such an inclination, for example, when the molten metal led out from the one end port 59 flows down to the server side, the splash of the hot water drops from the hot water surface is reduced.

An opening 60 is provided substantially at the center of the large lid 52.
The opening 60 is provided with a hatch 62 to which a handle 61 is attached. Hatch 62 is large lid 52
It is provided at a position slightly higher than the upper surface. One portion of the outer periphery of the hatch 62 is attached to the large lid 52 via a hinge 63. Thereby, the hatch 62 can be opened and closed with respect to the opening 60 of the large lid 52. Further, bolts 64 with handles for fixing the hatch 62 to the large lid 52 are attached to two places on the outer periphery of the hatch 62 so as to face the position where the hinge 63 is attached. The hatch 62 is fixed to the large lid 52 by closing the opening 60 of the large lid 52 with the hatch 62 and rotating the bolt 64 with the handle. The hatch 62 can be opened from the opening 60 of the large lid 52 by reversing the rotation of the bolt 64 with the handle to release the fastening. The maintenance of the inside of the container 100 and the insertion of the gas burner at the time of preheating are performed through the opening 60 with the hatch 62 opened.

At the center of the hatch 62 or at a position slightly deviated from the center, a through-hole 65 for adjusting the internal pressure for reducing and increasing the pressure in the container 100 is provided. A piping 66 for pressurization and decompression is connected to the through hole 65. The pipe 66 extends upward from the through hole 65, bends at a predetermined height, and extends horizontally therefrom. A thread is formed on the surface of the portion of the pipe 66 inserted into the through hole 65, while a thread is also formed on the through hole 65, whereby the pipe 66 is fixed to the through hole 65 by screwing. It is supposed to be.

A pressurizing or depressurizing pipe 67 can be connected to one of the pipes 66. The pressurizing pipe is connected to a tank or a pressurizing pump stored in pressurized gas. In addition, a pressure reducing pump is connected to the pressure reducing pipe. Then, the pipe 5 is utilized by utilizing the pressure difference by reducing the pressure.
It is possible to introduce molten aluminum into the container 100 through the flow path 6 and the flow path 57, and to take out the molten aluminum out of the container 100 through the flow path 57 and the pipe 56 using a pressure difference by pressurization. Is possible. By using an inert gas such as a nitrogen gas as the pressurized gas, the oxidation of the molten aluminum during pressurization can be more effectively prevented.

In the present embodiment, the hatch 62 arranged substantially at the center of the large lid 52 is provided with a through hole 65 for pressurizing and depressurizing, while the above-mentioned pipe 66 extends in the horizontal direction. Therefore, the pressurizing or depressurizing pipe 67 is connected to the pipe 6 described above.
6 can be safely and easily performed. Further, since the pipe 66 can be rotated with a small force with respect to the through hole 65 by extending the pipe 66 in this manner, it is very difficult to fix or remove the pipe 66 screwed to the through hole 65. Can be performed with a small force, for example, without using a tool.

At a position slightly deviated from the center of the hatch 62 and at a position facing the above-mentioned through-hole 65 for pressurizing and depressurizing, a through-hole 68 for releasing pressure is provided.
A relief valve (not shown) is attached to 8. Thus, for example, when the pressure inside the container 100 becomes equal to or higher than a predetermined pressure, the inside of the container 100 is opened to the atmospheric pressure from the viewpoint of safety.

In the large lid 52, two through holes 70 for a liquid level sensor into which two electrodes 69 as a liquid level sensor are inserted are arranged at a predetermined interval. Electrodes 69 are inserted into these through holes 70, respectively. The electrodes 69 are arranged so as to face each other in the container 100, and the respective tips extend to, for example, almost the same position as the maximum liquid level of the molten metal in the container 100. By monitoring the conduction state between the electrodes 69, the container 1
It is possible to detect the maximum liquid level of the molten metal in 00, whereby the excessive supply of the molten metal to the container 100 can be more reliably prevented.

On the bottom rear surface of the main body 50, for example, two legs (channels) 71 having a cross-sectional shape into which a fork (not shown) of a forklift is inserted and having a predetermined length are arranged in parallel. I have. Further, the bottom inside the main body 50 is entirely inclined so that the flow path 57 side becomes lower. Thus, when the molten aluminum is led out to the outside via the flow path 57 and the pipe 56 by pressurization, the so-called remaining hot water is reduced. Further, for example, when the container 100 is tilted and the molten aluminum is led out through the flow path 57 and the pipe 56 during maintenance, the angle at which the container 100 is tilted can be made smaller, and safety and workability are improved. .

As described above, in the container 100 according to the present embodiment, the hatch 62 is provided with the through-hole 65 for adjusting the internal pressure and the through-hole 65 is connected to the piping 66 for adjusting the internal pressure. Each time the molten metal is supplied, the adhesion of the metal to the through-hole 65 for adjusting the internal pressure can be confirmed. Therefore, clogging of the pipe 66 and the through hole 65 used for adjusting the internal pressure can be prevented.

In the container 100 according to the present embodiment,
The hatch 62 is provided with a through-hole 65 for adjusting the internal pressure, and the hatch 62 is located substantially at the center of the upper surface of the container 100 corresponding to a position where the change in the liquid level of the molten aluminum and the degree to which the droplets scatter are relatively small. Since it is provided, the adhesion of the molten aluminum to the pipe 66 and the through hole 65 used for adjusting the internal pressure is reduced. Therefore, clogging of the pipe 66 and the through hole 65 used for adjusting the internal pressure can be prevented.

Further, in the container 100 according to the present embodiment,
Since the hatch 62 is provided on the upper surface of the large lid 52,
The distance between the back surface of the hatch 62 and the liquid surface is longer by the thickness of the large cover 52 than the distance between the back surface of the large lid 52 and the liquid surface. Therefore, the possibility that aluminum adheres to the back surface of the hatch 62 provided with the through hole 65 is reduced, and clogging of the pipe 66 and the through hole 65 used for adjusting the internal pressure can be prevented.

Next, the second furnace 2 in the second factory 20
A supply system from 1 to the container 100 will be described with reference to FIG.

As shown in FIG. 5, molten aluminum is stored in the second furnace 21. A supply unit 21a is provided in the second furnace 21, and a suction pipe 201 is inserted into the supply unit 21a. The suction pipe 201 is arranged such that one end port (the other end 201b of the suction pipe 201) protrudes from the liquid surface of the molten aluminum of the supply unit 21a. That is, one end portion 201a of the suction tube 201 extends to near the bottom of the second furnace 21,
The other end 201b of the suction tube 201 is led out from the supply unit 21a. The suction tube 201 has a holding mechanism 2
02 is basically held inclined. The inclination angle is, for example, about 10 ° with respect to the perpendicular, and matches the inclination of the tip of the pipe 56 in the container 100. The tip 201b of the suction tube 201
Is connected to the distal end of the pipe 56 in the container 100, and by matching the inclination in this way, the connection between the distal end 201 b of the suction pipe 201 and the distal end of the pipe 56 in the container 100 is facilitated. .

Then, a pump 313 for reducing pressure is connected to the pipe 66.
Is connected. Next, the pump 313
Is operated to reduce the pressure inside the container 100. Thereby, the molten aluminum stored in the second furnace 21 is introduced into the container 100 via the suction pipe 201 and the pipe 56.

In this embodiment, in particular, the molten aluminum thus stored in the second furnace 21 is supplied to the suction pipe 2.
Since the molten aluminum is introduced into the container 100 through the pipe 01 and the pipe 56, the molten aluminum does not come into contact with external air. Therefore, no oxide is generated,
The quality of the molten aluminum supplied using this system is very good. In addition, the operation for removing the oxide from inside the container 100 becomes unnecessary, and the workability is improved.

In this embodiment, in particular, the introduction of the molten aluminum into the container 100 and the extraction of the molten aluminum from the container 100 can be performed using substantially only the two pipes 56 and 312. Can be very simple. Further, since the chance that the molten aluminum comes into contact with the outside air is drastically reduced, generation of oxides can be almost eliminated.

FIG. 6 shows a manufacturing flow when the above system is applied to an automobile factory.

First, as shown in FIG.
The molten aluminum stored therein is introduced (received hot water) into the container 100 via the suction pipe 201 and the pipe 56 (Step 501).

Next, as shown in FIG. 1, the container 100 is transported from the second factory 20 to the first factory 10 by the truck 32 via the public road 30 (step 502).

Next, the first factory (use point) 10
Then, the container 100 is delivered by the delivery vehicle 18 to the die casting machine 11 for manufacturing an automobile engine, and the container 1
From 00, molten aluminum is supplied to the holding furnace 12 (step 503).

Next, in the die cast machine 11, an automobile engine is molded using the molten aluminum stored in the holding furnace 12 (step 50).
4).

Then, the automobile is assembled using the automobile engine and other parts molded in this manner,
The car is completed (Step 505).

In this embodiment, as described above, since the engine of the automobile is made of aluminum containing almost no oxide, it is possible to manufacture an automobile having an engine with good performance and durability.

[0099] Still another embodiment of the present invention will be described.

FIG. 7 is a sectional view of a container according to a second embodiment of the present invention. In the same figure, a state in which it is inclined is shown.

The container 2100 shown in FIG.
10 and a pipe 2 disposed outside the container body 2110 from a position 2112 shifted from the center 2111 of the container body 2110.
130.

The container body 2110 has an opening 211 at its upper part.
3 and a lid 2114 is attached so as to close the opening 2113.

The container body 2110 is provided in the first space 2115
And a first frame 2116 made of steel such as SS400 (JIS).
And a second frame 2118 made of steel, such as SS400 (JIS), disposed to form a second space 117 between the second frame 117 and the second frame 117. These frame materials are preferably made of a material having a small coefficient of linear expansion, and it is preferable to use a material having a small difference in coefficient of linear expansion from a heat insulating material such as a caster to be applied to the inner layer. First
It is preferable that the physical properties of the frame and the second frame are coordinated, and here, materials having the same physical properties are selected and employed.

At the bottom of the container body 2110, a pair of mouth-shaped engaging members 2119 into which a fork of a forklift is inserted are attached.

The lid 2114 is provided with a molten metal 2 such as aluminum, for example, in the container body 2110 near the center thereof.
An opening 2121 for injecting 120 is provided, and a child lid 2122 is pivotally attached to the opening 2121 so that the child lid 2122 is fixed to the opening 2121 by a fixture (not shown).

Further, a gas for pressurization from a pressurized pump (not shown) is
An introduction port 2123 for introduction into the space 2115 is provided. By using an inert gas such as nitrogen gas as the above gas, oxidation of the molten metal 2120 can be prevented.

Further, the container body 2110 is attached to the lid 2114.
Of the container body 2 from a position 2112 shifted from the center 2111 of the
A pipe 2130 arranged outside the pipe 110 is attached. The lower end 2131 of the pipe 2130 is located near the bottom in the container body 2110. A mechanism for opening and closing the lower end 2131 may be provided. This makes it possible to prevent hot water from flowing out when the container falls down. The pipe 2130 has, outside the container body 2110, an inclined portion 2132 inclined upward by, for example, about 5 ° to 10 °, and a discharge portion 2133 opened downward.

Here, the center 2111 of the container body 2110
The distance between the shift position 2112 and the shift position 2112 is, for example,
m is about 30 cm. The same effect can be obtained if the displacement is larger or smaller.

In such a container 2100, first, in a horizontal state, pressurized gas is introduced from the inlet 2123, and the molten metal 2120 in the container main body 2110 is pressure-fed out from the pipe 2130. Thereafter, as shown in FIG. 7, the remaining molten metal 2120 is pressure-fed from the pipe 2130 to the outside by being inclined to the pipe 2130 side by a forklift.

The container 2 of the present embodiment thus configured
In 100, since the pipe 2130 is displaced from the center of the container body 2110, the displacement with respect to the liquid level in the container body 2110 becomes large when the pipe is tilted. A space is formed between the surface 2131 and the surface of the molten metal 2120 to prevent the pipe from being clogged.

FIG. 8 is a sectional view of a container according to a third embodiment of the present invention. In the following embodiments, the same components as those already illustrated are denoted by the same reference numerals, and description thereof will be omitted.

In this container 2200, the first space 211
At least one passage (pipe) 2210 connecting the second space 5 and the second space 2117 is provided.

In the second space 2117, a pressing mechanism 222 is provided.
0 and a leak valve 2230 are attached.

The pressurizing mechanism 2220 includes a pressurizing valve 222
1 and the pressure reducing valve via the 2222 air tank 2223
, And pressurized air is introduced into the second space 2117. Further, a pressure controller 2224 is attached to the pressurizing mechanism 2220.

It is also possible to connect a vacuum pump instead of the pressurizing mechanism 2220.

In the container 2200 thus configured,
If the second space 2117 is evacuated to vacuum, it will keep warm,
It is possible to compensate for a decrease in heat insulation performance due to a temporal change of the heat insulating material. For example, the degree of vacuum may be increased in accordance with a change over time.

Further, the container 2200 thus configured
Then, when the first space 2115 is pressurized from the side between the second cavities 2116 via the passage 2210, the pumping gas is preheated and then supplied to the inside of the container (the first space 2115).
Therefore, a decrease in the temperature of the molten metal can be kept small.
In particular, in the final stage of the pumping, intermittent discharge of the molten metal and the gas is likely to occur, and in this case, the temperature of the molten metal is deprived by the pumping gas and the viscosity increases. Therefore, by preheating the pumping gas, a decrease in the temperature of the molten metal can be suppressed, and clogging of the pipe can be effectively prevented. In addition, safe hot water supply can be stopped, and the time required for stopping hot water supply can be shortened.

Further, the container 2200 thus configured
Then, the first space 2115 is provided by the leak valve 2230.
Is leaked from the second space 2117 side through the passage 2210, so that the high-temperature gas is cooled to a certain extent and then leaked from the leak valve 2230. Therefore, the thermal load on the leak valve 2230 is reduced,
It is possible to improve the reliability of the device and extend the service life.

FIG. 9 is a sectional view of a container according to a fourth embodiment of the present invention.

In the container 2300 shown in the figure, a pressurizing mechanism 2220 is connected to the first space 2115,
The decompression mechanism 2310 is connected to 117. In the pressure reducing mechanism 2310, for example, a vacuum pump 2312 is connected to the second space 2117 via a vacuum valve 2311, and a vacuum gauge 2313 and a leak valve 2314 are interposed therebetween.

Further, the first space 2115 and the second space 2
A leak valve 2320 as a second valve is interposed in a passage 2210 connecting to the passage 117, and a leak valve 2321 as a first valve is connected in the container body.

In the container 2300 having such a configuration, the time required for the hot water supply stopping operation can be reduced, or the reliability of the stopping operation can be improved. That is, the second space 21
17 is depressurized, and when hot water supply is stopped, first, the leak valve 2321 as the first valve is opened to restore the pressure in the first space 2115, and then the leak valve 2320 as the second valve is opened to release the first valve. Of the space 2115 at a negative pressure. Thereby, the hot water supply can be completely stopped, and the molten metal in the pipe can be returned to the container side.

FIG. 10 is a sectional view of a container according to a fifth embodiment of the present invention.

In the container 2400 shown in the figure, a pipe 2420 having an upward slope is connected near the bottom of the container main body 2410. The other end of the pipe 2420 extends at least to a position higher than the container 2400.

FIG. 11 is a sectional view of a container according to the sixth embodiment of the present invention.

In the container 2500 shown in FIG.
Partition wall 2520 that divides the inside of 510 into two parts while communicating near the lower part
And a gutter 2540 connected to one space 2530 side partitioned by a partition 2520. The other space 25
A pressure mechanism 2220 is connected to 31. Okebe 2
A lid 2541 is provided on the upper part of 540.

In the container 2500 of this embodiment, when the inside of the container is pressurized by the pressurizing mechanism 2220, the hot water in the container is discharged to the outside through the gutter 2540.

That is, if the pipe is inside the main body, the maintenance is very likely to be clogged.

On the other hand, in the container 2500 of the present embodiment, one space 2530 separated by the partition wall 2520 is used in place of a pipe, for example, overflows from an opening 2532 and is supplied with hot water by a gutter 2540. . This greatly simplifies the maintenance and hardly causes the clogging, and the clogging can be recovered by the normal maintenance.

FIG. 12 is a sectional view of a container according to a seventh embodiment of the present invention.

The container 2600 shown in the figure is a cover 25 arranged on the upper part of the tub 2540 in the container shown in FIG.
41 is removed.

[0132]

As described above, according to the present invention,
It is possible to prevent clogging of pipes and holes used for internal pressure adjustment.

[Brief description of the drawings]

FIG. 1 is a schematic diagram illustrating a configuration of a metal supply system according to an embodiment of the present invention.

FIG. 2 is a diagram showing a relationship between a container and a holding furnace according to an embodiment of the present invention.

FIG. 3 is a sectional view of a container according to an embodiment of the present invention.

FIG. 4 is a plan view of FIG. 3;

FIG. 5 is a diagram showing a configuration of a supply system from a second furnace to a container in a second factory according to an embodiment of the present invention.

FIG. 6 is a flowchart showing a method for manufacturing a vehicle using the system of the present invention.

FIG. 7 is a sectional view of a container according to a second embodiment.

FIG. 8 is a sectional view of a container according to a third embodiment.

FIG. 9 is a cross-sectional view of a container according to a fourth embodiment.

FIG. 10 is a sectional view of a container according to a fifth embodiment.

FIG. 11 is a sectional view of a container according to a sixth embodiment.

FIG. 12 is a sectional view of a container according to a seventh embodiment.

[Explanation of symbols]

 Reference Signs List 50 container main body 51, 60 opening 57 flow path 62 hatch 65 through hole for internal pressure adjustment 66 pipe for internal pressure adjustment 60 opening 100 container for supplying molten metal

Continued on the front page F term (reference) 4E014 DB01 HA01 LA09

Claims (24)

[Claims] A container capable of housing a molten metal; a hatch provided on the upper surface of the container so as to be openable and closable, and provided with a through-hole for adjusting an internal pressure communicating between the inside and the outside of the container; Is provided on the side surface, and communicates inside and outside of the container,
And a flow path through which the molten metal can flow. 2. The molten metal supply container according to claim 1, wherein the hatch is provided substantially at the center of an upper surface of the container. 3. The molten metal supply container according to claim 1, wherein the molten metal supply container is attached to the through hole, protrudes upward from an upper surface of the container, and is horizontally positioned at a predetermined height. A container for supplying molten metal, further comprising a pipe bent in a horizontal direction and having a connection portion led out in a horizontal direction. 4. The molten metal supply container according to claim 3, wherein the pipe is detachably screwed into the through hole. 5. A container for supplying molten metal having portability, comprising: a container having a flat surface on a bottom rear surface capable of accommodating a molten metal; and an openable and closable upper surface of the container. Provided, a hatch provided with a through hole for internal pressure adjustment communicating between the inside and outside of the container, provided on the side surface of the container, communicating between the inside and outside of the container,
And a flow path through which the molten metal can flow. 6. The molten metal supply container according to claim 5, further comprising a leg provided on a bottom rear surface of the container and into which a fork of a forklift can be inserted. Container. 7. The molten metal supply container according to claim 5, wherein the hatch is provided substantially at a center of an upper surface portion of the container. 8. One of claims 5 to 7
Item, in the molten metal supply container according to the above, attached to the through-hole, protruded upward from the upper surface of the container, is bent horizontally at a predetermined height position, the connection portion is derived in the horizontal direction A container for supplying molten metal, further comprising a provided pipe. 9. The molten metal supply container according to claim 8, wherein the pipe is detachably screwed into the through hole. 10. A container for supplying molten metal used in a system for flowing molten metal between the outside and the outside without tilting, wherein a container capable of containing the molten metal is provided on an upper surface of the container. A hatch provided to be openable and closable and provided with a through hole for internal pressure adjustment communicating between the inside and the outside of the container, provided on a side surface of the container, and communicating between the inside and outside of the container;
And a flow path through which the molten metal can flow. 11. The molten metal supply container according to claim 10, further comprising a leg provided on a bottom rear surface of the container and into which a fork of a forklift can be inserted. 12. The molten metal supply container according to claim 10, wherein the hatch is provided substantially at a center of an upper surface portion of the container. 13. The molten metal supply container according to claim 10, wherein the container is attached to the through hole, protrudes upward from an upper surface of the container, and has a predetermined height. A container for supplying molten metal, further comprising a pipe which is bent in a horizontal direction at a position of the pipe and a connection part is led out in a horizontal direction. 14. The molten metal supply container according to claim 13, wherein the pipe is detachably screwed into the through hole. 15. A container for supplying molten metal having portability, having a flat surface on the bottom rear surface for self-supporting, capable of accommodating molten metal, communicating between the inside and the outside, and substantially at the center of the upper surface portion. A container having a through-hole for internal pressure adjustment provided at a position, provided on a side surface of the container, communicating between the inside and outside of the container,
And a flow path through which the molten metal can flow. A container for supplying molten metal, comprising: 16. The molten metal supply container according to claim 15, wherein the hatch is provided substantially at the center of the upper surface of the container. 17. The molten metal supply container according to claim 15, further comprising a leg provided on a bottom rear surface of the container and into which a fork of a forklift can be inserted. Supply container. 18. The molten metal supply container according to claim 15, wherein the molten metal supply container is attached to the through hole, protrudes upward from an upper surface of the container, and has a predetermined height. A container for supplying molten metal, further comprising a pipe which is bent in a horizontal direction at a position of the pipe and a connection part is led out in a horizontal direction. 19. The molten metal supply container according to claim 18, wherein the pipe is detachably screwed into the through hole. 20. The container for supplying molten metal according to any one of claims 15 to 19, wherein the container further comprises a hatch provided substantially at the center of the upper surface of the container. The molten metal supply container, wherein the through hole is provided in the hatch. 21. The molten metal supply container according to any one of claims 15 to 20, wherein the molten metal supply container is used in a system for flowing molten metal to and from the outside without tilting. A container for supplying molten metal, characterized in that: 22. A container capable of containing a molten metal, a hatch provided on the upper surface of the container so as to be openable and closable, and provided with a through hole for adjusting an internal pressure communicating between the inside and the outside of the container; And a flow path through which the molten metal can flow, attached to the through hole, protruding upward from the upper surface of the container, and bent horizontally at a predetermined height. And a pipe having a connecting portion extending in a horizontal direction. 23. A container provided with an internal pressure adjusting through-hole communicating between the inside and the outside, and capable of accommodating a molten metal, and communicating between the inside and the outside of the container to allow the molten metal to flow. A pipe that is attached to the through hole, protrudes upward from the upper surface of the container, is bent in a horizontal direction at a predetermined height, and has a connection part drawn out in the horizontal direction. A container for supplying molten metal, characterized in that: 24. The molten metal supply container according to claim 22, wherein the pipe is detachably screwed to the container.