JPH09155508A - Rotary drum device for heating or cooling and rotary drum device for cooling molten alloy - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a rotary drum device for heating or cooling whose outer peripheral surface can be heated or cooled to the temp. uniformly as much as possible at profitable cost. SOLUTION: In this rotary drum device 30 by which a prescribed material is heated or cooled into thin sheet state while being supplied to the rotated outer peripheral surface thereof, a driving means 31 for rotating the drum 10 and plural individual passages (A, B, C) through which the fluid for heating or cooling the outer peripheral surface of the drum is allowed to flow are provided. Plural flowing passages are arranged in the inside of the outer peripheral surface of the drum as spiral state toward the drum axial direction so that respective flowing passages are arranged adjacent to each other in order and arranged along the outer peripheral surface of the drum, and each flowing passage is arranged so as to pass through from the one end face to another end face.

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present invention relates to a metal melt such as iron or an alloy; various liquid resin raw materials; liquid raw materials such as liquid or pasty raw materials for various food materials; and papers for papermaking and drying. The present invention relates to a rotary drum device for heating / cooling and a rotary drum device for cooling a metal melt, which heats or cools a predetermined material such as a material, a printed matter, and a woven fabric in a ribbon shape.

[0002]

2. Description of the Related Art A technique for heating or cooling a raw material fluid such as liquid to solidify it into a thin film based on its physical properties is used in various fields. For example, when forming a metal melt such as iron or alloy into a ribbon shape, when preparing a metal melt in the form of a thin plate before crushing or crushing when preparing a powder or strip metal, various resin raw materials are formed into a film. It is known to be used in various fields, such as when it is formed into various shapes, when it is used to produce various edible dough, kneaded foods and the like. Further, there is known a method of producing paper or the like by heating a paper material, a printed material, a woven fabric, or the like, which has been paper-made and is not dried, to be dried.

Various devices have been conventionally known as a device for heating or cooling such a raw material fluid or a paper material to form a ribbon. For example, heating or cooling while feeding a predetermined material substantially continuously. A rotary drum device is known as a device that can be used. In this device, a predetermined material is supplied substantially continuously to the rotating drum outer peripheral surface, whereby the predetermined material is heated or cooled on the drum outer peripheral surface, solidified or dried in a ribbon shape, and peeled off from the drum as needed. A process of shifting to the process is being performed.
At this time, it is desired that the predetermined material be heated or cooled as uniformly as possible on the outer peripheral surface of the drum.

In the above-mentioned rotary drum device, for example, for heating and baking a fluid food raw material to prepare a thin strip-like material such as food dough, as a heating means for the outer peripheral surface of the drum,
A device in which a heat source such as a nichrome wire is provided in the drum is known. In addition, as a drum device used for drying the paper raw material, a device is known in which a hollow portion is provided in the drum, and a heat source such as steam is retained and circulated in the hollow portion to heat the outer peripheral surface of the drum. .

However, when a nichrome wire or the like is used as a heat source, it is necessary to make the wiring of the nichrome wire dense in order to heat the entire outer peripheral surface of the drum to a uniform temperature, and therefore there is a high possibility that problems such as wire breakage will occur. . On the other hand, when steam or the like is retained and circulated in the hollow portion provided in the drum, a temperature difference often occurs on the outer peripheral surface of the drum due to the retention of the vapor in the hollow portion.

Further, in a rotary drum device for forming thin strips such as thin plates and ribbons by cooling and solidifying a metal melt such as an alloy, a material for forming the outer peripheral surface of the drum capable of uniformly cooling the metal melt is examined. In addition to the above, a device (Japanese Patent Laid-Open No. 63-126645) in which a cooling water passage is provided spirally in the drum along the circumferential direction of the drum, and a space in the drum parallel to the rotation axis of the drum are provided. An apparatus (Japanese Patent Publication No. 60-51933) in which a cooling fluid passage is arranged is known.

[0007]

In the apparatus having the spiral circulation passage arranged along the circumferential direction along the outer peripheral surface of the drum, the cooling water can be promptly and constantly circulated. Since it can be circulated along the outer peripheral surface of the drum, it is possible to reduce the possibility that a temperature difference occurs on the outer peripheral surface of the drum as compared with a structure in which a hollow portion is provided in the drum to retain and circulate steam or the like. .

However, when the flow passage that penetrates from the one end surface side to the other end surface side of the drum is formed in a spiral shape, the total length of the flow passage tends to be long, and even if the cooling water flows quickly and constantly. Even in such a case, it is unavoidable that there is a difference in temperature between the cooling water immediately after being introduced into the drum and the cooling water immediately before being discharged from the drum.

Further, in the apparatus in which the cooling fluid passages are arranged in the drum in parallel with the drum rotation axis at intervals, the length of the cooling fluid passages coincides with the drum width and immediately after being introduced into the drum. The temperature difference between the cooling fluid and the cooling fluid immediately before being discharged from the drum can be suppressed as much as possible.
However, in order to maintain the mechanical strength of the drum, it is necessary to arrange such cooling fluid passages at predetermined intervals, and it is difficult to cool the entire outer peripheral surface of the drum to a uniform temperature. Although it is not impossible to densely arrange such cooling fluid passages inside the outer peripheral surface of the drum, it is necessary to provide a large number of independent passages that penetrate the inside of the drum. It is extremely difficult to process the passage in the state where the above is held, and there is a problem that the cost becomes high.

Therefore, an object of the present invention is to provide a rotary drum device for heating and cooling, which can heat or cool the outer peripheral surface of the drum to a temperature as uniform as possible in the rotary drum device and is advantageous in terms of cost.

Another object of the present invention is, in a rotating drum device for cooling and solidifying a metal melt, the outer peripheral surface of the drum can be cooled to a temperature as uniform as possible, and an ingot of alloy excellent in structure stability and the like can be obtained. It is an object of the present invention to provide a rotary drum device for cooling a metal melt, which is advantageous in terms of cost and can be obtained easily.

[0012]

According to the present invention, there is provided a rotating drum device which heats or cools a predetermined material in the form of a ribbon while supplying the predetermined material to the outer peripheral surface of the rotating drum. A driving means and a plurality of independent circulation passages for circulating a heating / cooling fluid that heats or cools the outer peripheral surface of the drum are provided. A heating and rotating drum device for heating and cooling, which is spirally disposed inside the outer peripheral surface of the drum in the axial direction of the drum, and is provided so that each flow passage extends from one end surface to the other end surface of the drum. Will be provided. Further, according to the present invention, there is provided a rotary drum device for cooling and solidifying the alloy melt in the shape of a ribbon while supplying the alloy melt to the rotating drum outer peripheral surface, the drive means rotating the drum and the drum outer peripheral surface. A plurality of independent circulation passages for circulating the cooling fluid for cooling are provided, and the plurality of circulation passages are spirally formed in the drum axial direction so that the respective circulation passages are sequentially adjacent and along the outer peripheral surface of the drum. Provided is a rotary drum device for cooling an alloy melt, which is provided inside an outer peripheral surface of a drum and is provided so that each flow passage extends from one end surface to the other end surface of the drum.

In the rotary drum device of the present invention, the predetermined material is a material melt such as a metal melt, various liquid resin materials, various liquid or low-viscosity paste-like various raw materials for food materials, and papermaking and drying. The paper material, the printed matter, the woven fabric, etc. are not particularly limited as long as they are materials for forming a ribbon shape by heating or cooling on the outer peripheral surface of the drum, or for drying an already ribbon shape. Absent.

In the rotary drum device of the present invention, the ribbon shape when heating or cooling the predetermined material or alloy melt into a ribbon shape means all ribbons such as a thin plate shape, a ribbon shape, a thin film shape and a paper shape. It is a concept that includes.

In the rotary drum device of the present invention, the heating / cooling fluid to be circulated in the circulation passage may be either a gas or a liquid.

A plurality of flow passages formed in the rotary drum device of the present invention are required independently.
It can be appropriately determined according to the size of the drum, the volume of the flow passage, and the like. About 3 or 4 pieces are preferable in terms of design. The shape of the flow passage is not particularly limited, but a shape having a high heat exchange rate, such as a screw thread shape described later, is preferable.

That the plurality of distribution passages are adjacent to each other in sequence means that
For example, in a drum provided with three flow passages shown in FIGS. 1 and 2 described later, each flow passage A provided in a spiral shape,
B and C are arranged in this order and are formed in a spiral shape so as to penetrate from one end surface of the drum to the other end surface thereof. At this time, it is desirable that the interval between the adjacent flow passages is narrower if the heating / cooling fluid flowing through the flow passages does not come into contact with each other and the flow passages are independent. Forming the flow passage along the outer peripheral surface means that the heat of the heating / cooling fluid flowing in the flow passage is conducted to the entire outer peripheral surface of the drum, and is located near the outer peripheral surface to the extent that the outer peripheral surface temperature can be controlled. Formed in. For example, inside the outer peripheral surface of the drum,
As long as the temperature of the outer peripheral surface can be controlled and the mechanical strength of the drum can be maintained, the formation location can be appropriately selected according to the drum forming material, the method of forming the flow passage, and the like.

In order to form such a flow passage, a plurality of thread cutting threads corresponding to the number of flow passages to be formed are spaced apart, and a plurality of desired spiral shapes are formed by one screw cutting operation. It can be formed by using a device or the like in which the screw thread is arranged at an angle at which the flow passage can be formed.

In the rotary drum device of the present invention, since such a plurality of independent flow passages are sequentially formed in a spiral shape along the outer peripheral surface of the drum, the flow passages are densely arranged inside the outer peripheral surface of the drum. Even if it is done, it is possible to shorten the total length of each circulation passage, it is possible to maintain a good thermal efficiency of the heating and cooling fluid during circulation, keep the temperature of the drum outer peripheral surface uniform be able to.

In the rotary drum device of the present invention, the material of the outer peripheral surface of the drum can be appropriately selected according to the kind of the predetermined material supplied to the drum as long as the material has good thermal conductivity. For example, when cooling the alloy melt, pure copper,
Cr-Cu alloy, Be-Cu alloy, etc. can be used. Further, the surface roughness can be appropriately selected according to the kind of the predetermined material.

The rotary drum for cooling the alloy melt according to the present invention comprises:
The structure is the same as the rotary drum device for heating / cooling except that the fluid to be circulated in the plurality of independent flow passages is limited to the fluid for heating / cooling.

[0022]

BEST MODE FOR CARRYING OUT THE INVENTION Preferred embodiments of the present invention will be described below with reference to the accompanying drawings, but the present invention is not limited thereto.

FIG. 1 is a sectional view (FIG. 1 (a)) and a transparent side view (FIG. 1 (b)) of a drum 10 that can be used in the rotary drum device of the present invention, and FIG. Figure 1
It is a XX sectional view of (b).

The drum 10 has a cylindrical outer peripheral wall 11 in which three female thread grooves (A, B, C) are threaded on the inner peripheral wall, and is fitted to the inner periphery of the outer peripheral wall 11. It is configured with the inner peripheral wall body 12 that fits.

Grooves (A, B, C) of female threads threaded on the inner peripheral wall of the outer peripheral wall 11 are fitted to the inner peripheral wall 12 so that the drum 10 moves from one end surface side to the other end surface side. Each independently forms a passage therethrough. Each of these passages penetrates in a spiral shape in the axial direction of the drum 10, and a circulation passage (A,
B, C) are formed. Distribution passage (A,
(B, C) are formed adjacent to each other in this order and independently penetrate each other in a spiral shape, so that as shown in the drawing, the flow passages (A, B, C) are formed along the entire circumference of the outer peripheral wall body 11. Even when they are tightly spread over each other, the total length of each circulation passage can be reduced to 1/3 of that formed with one circulation passage. Therefore, for example, when the heating / cooling fluid is circulated at the same fluid pressure, the same amount of the heating / cooling fluid can be circulated in 1/3 time, and the heat loss during the circulation of the heating / cooling fluid is reduced. be able to. Therefore, the outer peripheral surface of the outer peripheral wall body 11 is maintained at a substantially uniform temperature.

A fastening hole 13 for fastening the drum 10 to a flange or the like is provided outside the flow passages (A, B, C) of the outer peripheral wall body 11.

Next, with reference to FIG. 3, an embodiment of a rotary drum device equipped with the drum 10 shown in FIGS. 1 and 2 will be described.

In FIG. 3, reference numeral 30 denotes a rotary drum device. The device 30 includes the drum 10, a drive device 31 for rotating the drum 10 at a desired rotation speed, and a drive device 3.
A power transmission device 32 for transmitting the power of 1 to the drum 10,
A fluid circulation device 3 for circulating and circulating the heating / cooling fluid in the circulation passages (A, B, C) (see FIGS. 1 and 2) of the drum 10.
It is mainly composed of 3.

The drive unit 31 includes a motor 31a and a sprocket 31b connected to the rotation shaft of the motor 31a. The sprocket 31b is provided with a chain 31c for transmitting the rotational power of the motor 31a to a drive shaft 34 for rotating the drum 10.

The power transmission device 32 includes a main bearing 32a connected to the drive shaft 34, an auxiliary bearing 32b, and a flange 32c fastened to the drum 10 and connected to the drive shaft 34. The main bearing 32a includes the drive device 31 and the chain 31.
The rotary power of the drive device 31 is transmitted from the main bearing 32a to the drive shaft 34, and the rotary power of the drive shaft 34 is transmitted to the drum 10 and the flange 32d via the flange 32c. ing.

Like the drum described with reference to FIGS. 1 and 2, the drum 10 is provided with the flow passages (A, B, C) in the outer peripheral wall 11, and the end faces thereof are respectively flanges (32c, 32).
It is concluded in d). The flanges (32c, 32d) and the drive shaft 34 have a hollow structure that communicates with each other, and the heating / cooling fluid supplied to the hollow portion of the flange 32d is the drum 10.
It is configured to be supplied to one of the flow passages (A, B, C) and discharged from the other flow passage (A, B, C) to the hollow portion of the flange 32c.

The fluid circulation device 33 is a rotary joint 33 connected to a drive shaft 34 via a coupling 35.
a and a circulation passage 33b connecting the two rotary joints 33a.

The rotary joint 33a has a drive shaft 3
It is an existing joint that relays the heating / cooling fluid that should flow into or out of the hollow portion of the flanges (32c, 32d) through the coupling 35 mounted to the hollow drive shaft 34. is there.

In the circulation passage 33b, a pump 33c for circulating the heating / cooling fluid at a desired flow rate in the direction of the arrow in the drawing.
And a heat exchanger 33 for adjusting the temperature of the heating / cooling fluid supplied to the circulation passages (A, B, C) of the drum 10 to a constant value.
d.

In the rotary drum device 30 having such a structure, the rotational power from the drive device 31 is transmitted by the power transmission device 3.
Is urged by the drive shaft 34 via the flange (32c,
32d), the drum 10 and the coupling 35 are constantly rotated at a constant speed.

On the other hand, in the rotary drum device 30, the heating / cooling fluid heated or cooled to a desired temperature by the heat exchanger 33d is a pump 33c provided in the fluid circulation device 33.
Is discharged at a desired pressure from and flows in the circulation passage 33b in the direction of the arrow. Then, the heating / cooling fluid passes through the rotary joint 33a, flows into the rotating coupling 35, and further flows into the hollow portions of the drive shaft 34 and the flange 32d. In the hollow portion of the flange 32d, the heating / cooling fluid flows into the flow passages (A, B, C) of the drum 10 while diffusing in the radial direction of the flange, and by flowing, the outer peripheral surface of the drum outer peripheral wall body 11 is made uniform. Heat or cool to temperature. The heating / cooling fluid that has flowed through the flow passages (A, B, C) is discharged into the hollow portion of the flange 32c, and the hollow portion of the drive shaft 34, the coupling 35, and the rotary joint 3
3a to the circulation passage 33b, and the heat exchanger 3 again.
After returning to 3d and being thermostatted by heat adjustment, it circulates in the same flow path. As described above, the drum 10 is fastened to the flange or the like, and the drive device for rotation is provided outside the drum, so that maintenance or the like of the drum itself can be easily performed.

Next, an example in which the rotary drum device 30 is used for cooling an alloy melt to produce a thin alloy ingot is shown in FIG.
A brief explanation will be given with reference to.

In FIG. 4, reference numeral 40 is a schematic view for explaining a process for producing a thin ribbon ingot, 30 is a rotary drum device equipped with the drum 10 described in FIG. 3, and 41 is
Alloy melt prepared in the melting furnace, 42 is alloy melt 4
1 is a nozzle type alloy melt supply tool provided with an induction coil for supplying 1 to the drum outer peripheral surface of the drum device 30.

The alloy melt 41 in the nozzle-type alloy melt supply tool 42 rotates at a predetermined rotation speed and is continuously supplied to the outer peripheral surface of the drum 10 cooled to a predetermined temperature. The supplied alloy melt 41 is cooled at a predetermined cooling rate or the like, and is collected as a thin strip-shaped metal ingot 43 while being naturally separated from the rotating drum 10.

[0040]

In the rotary drum device of the present invention, a plurality of independent circulation passages provided in the drum are spirally formed in the drum axial direction so that the respective circulation passages are sequentially adjacent to each other and along the outer peripheral surface of the drum. Since it is arranged inside the drum outer peripheral surface and each of the flow passages is provided so as to penetrate from one end surface to the other end surface of the drum, the drum outer peripheral surface can be heated or cooled to a temperature as uniform as possible. Therefore, metal melts such as iron and alloys; various resin raw materials in liquid form; raw material fluids such as various food material raw materials in liquid form or paste form; and predetermined materials such as paper materials for printing and drying, printed materials, textiles, etc. It is useful for uniformly heating or cooling the thin ribbon. Particularly when the metal melt is cooled, an alloy ingot having excellent structure stability and the like can be easily obtained.

[Brief description of the drawings]

FIG. 1A is a partially omitted sectional view of a preferable drum used in the present invention, and FIG. 1B is a perspective side view of a preferable drum used in the present invention.

FIG. 2 is a sectional view taken along line XX of FIG.

FIG. 3 is a schematic view of a heating / cooling rotary drum device of the present invention.

FIG. 4 is a schematic view for explaining a process of manufacturing a thin ribbon alloy ingot by using the rotating drum device of the present invention.

[Explanation of symbols]

 10: Drum A, B, C: Circulation passage 11: Outer peripheral wall body 31: Drive device 32: Power transmission device 33: Fluid circulation device 34: Drive shaft 41: Alloy melt 43: Strip-shaped alloy ingot

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁶ Identification code Internal reference number FI Technical display location B41F 23/04 B41F 23/04 Z D21G 1/00 D21G 1/00 // B29C 35/16 7639- 4F B29C 35/16

Claims (2)

[Claims] 1. A rotary drum device for heating or cooling a predetermined material in a ribbon shape while supplying the predetermined material to the outer peripheral surface of a rotating drum, the driving means rotating the drum, and heating or cooling the outer peripheral surface of the drum. A plurality of independent circulation passages for circulating the heating / cooling fluid, and the plurality of circulation passages are spirally formed in the drum axial direction so that the respective circulation passages are sequentially adjacent to each other and along the outer peripheral surface of the drum. A rotary drum device for heating / cooling, wherein the rotary drum device is arranged inside the outer peripheral surface, and each flow passage is provided so as to penetrate from one end surface to the other end surface of the drum. 2. A rotary drum device for cooling and solidifying an alloy melt in the form of a ribbon while supplying the alloy melt to the rotating drum outer surface, wherein the driving means for rotating the drum and the drum outer surface are cooled. A plurality of independent circulation passages for circulating the cooling fluid are provided, and the plurality of circulation passages are spirally wound along the drum axial direction so that the respective circulation passages are adjacent to each other in order and along the drum outer peripheral surface. A rotary drum device for cooling an alloy melt, which is disposed inside the surface and is provided so that each flow passage extends from one end surface to the other end surface of the drum.