KR20070000775A - Supplying tank of high tension coating solution in high level electroplate manufacturing utility - Google Patents

Abstract

A high tension coating solution storage tank for manufacturing high level electric steel sheet is provided to prevent temperature alteration of the solution and quality deterioration, and maintain homogeneity and viscosity of the solution by fabricating a pair of agitation blades so as to move the coating solution to mutually opposite directions. The storage tank includes: an internal tank to hole high tension coating solution; an outer tank to enclose the internal tank; a pathway(P) which is located between lateral side of the internal tank and the outer tank so as to form a passage for transferring hot medium; and a pair of agitation blades(65) that which built in the internal tank and arranged to top and bottom portion spaced apart from each other. The blades flow the coating solution to mutually opposite directions. The pathway is formed by a compartment wall in a spiral form along circumferential direction of the internal tank(10) and the outer tank(20).

Description

Supplying tank of high tension coating solution in high level electroplate manufacturing utility

1 is a schematic configuration diagram generally showing the main part of a facility for supplying a high tension coating liquid to an electrical steel sheet;

Figure 2 is a schematic configuration diagram showing a high tension coating liquid storage tank according to the present invention.

※ Explanation of symbols about main part of drawing ※

P: path 10: inner barrel

20: outer cylinder 30: bulkhead

40: cover 50: high tension coating liquid discharge pipe

60: stirring motor 64, 65: stirring blade

The present invention relates to a high tension coating liquid supply tank for manufacturing high-grade electrical steel sheet.

In general, a coating layer having physical properties suitable for use in electrical equipment, such as insulation, is formed on the surface of the electrical steel sheet, and the coating layer is formed by applying a coating solution to the surface of the electrical steel sheet after annealing is completed, followed by dry curing.

Recently, a technique for forming a high tension coating liquid having a similar composition to that of a conventional insulating coating liquid and particularly excellent tensile strength on the surface of an electrical steel sheet has been developed, and the high tension coating liquid is formed directly on the surface of the finished electrical steel sheet or the electrical It is formed in the form of being laminated on top of the insulating layer on the surface of the steel sheet.

The high tension coating liquid is prepared to be sufficiently homogenized and to have a suitable viscosity and temperature in a main tank having a large capacity. Then, the high tension coating liquid of the main tank is supplied to coat the surface of the electrical steel sheet and the auxiliary tank and the drip pan having a small capacity.

Referring to Fig. 1, a plurality of main tanks 1 and auxiliary tanks 2 are installed at predetermined positions of the equipment, and the main tank 1, the auxiliary tank 2, the auxiliary tank 2, and the drip pan Pipe | tube 4 is provided between (3), and high tension coating liquid is conveyed along the preset path | route through this pipe | tube 4.

The conventional main tank (1) and the auxiliary tank (2) has a structure that provides only a function of simply stirring and storing the high tension coating liquid, and prevents the temperature change of the high tension coating liquid from occurring severely due to the change of the season. In addition, it is difficult to maintain the homogeneity and viscosity of the high tension coating liquid in an appropriate level range without considering the efficiency of stirring. In particular, when the vortex is excessively generated during stirring, bubbles are formed, and when the vortex is too small, the stirring effect is reduced. This makes the quality of the high tension coating layer formed by being applied to the surface of the electrical steel sheet poor.

In addition, if the homogeneity, viscosity and temperature of the high-tension coating solution are not constant, crystals are easily precipitated and excessive precipitates are generated. Thus, the precipitated crystals adhere to the inner surface of the tank and piping, and Existing inside the pipe and the auxiliary tank not only causes the deterioration of the high-tension coating solution, but also has the problem of causing an increase in the amount of the high-tension coating solution used by disposing of the sediment.

Accordingly, an object of the present invention is to provide a high tension coating liquid storage tank of the high-grade electrical steel sheet manufacturing equipment, which can maintain the temperature of the high tension coating liquid in a predetermined range to prevent the quality deterioration caused by the temperature change.

In addition, the present invention provides a high-tension coating liquid storage tank of the high-grade electrical steel sheet manufacturing equipment, which can maintain the homogeneity and viscosity of the high-tension coating liquid in an appropriate level range while suppressing the generation of vortices while maintaining the agitation of the high-tension coating liquid in an optimal state. Providing for other purposes.

As a technical configuration for achieving the above object, the present invention is a tank for storing a high tension coating liquid used in the manufacture of high-grade electrical steel sheet, the container-shaped inner tank for containing the high tension coating liquid and the outside of the inner tank A container-shaped outer tank installed to wrap, a path formed between the side of the inner tank and the outer tank to provide a path through which the heat medium moves, and a predetermined upper and lower part of the inner tank. By providing a high tension coating liquid storage tank of the high-grade electrical steel sheet manufacturing equipment, characterized in that it comprises a pair of agitator blades which are arranged at a distance and move the high tension coating liquid in a direction facing each other.

Hereinafter, an embodiment of the present invention will be described in detail with reference to the accompanying drawings.

Figure 2 is a schematic configuration diagram showing a high tension coating liquid storage tank according to the present invention.

The apparatus of the present invention has a cylindrical inner cylinder 10 of which the lower end is sealed to store the high-tension coating liquid, and a cylindrical outer cylinder 20 of which the lower end is closed to surround the sides and the bottom of the storage container 10.

The inner cylinder 10 is formed of a material having a large rigidity while being relatively easy in heat transfer, and has a thickness that is not deformed by the force applied by the components described later and the high tension coating liquid, which is filled and stirred in the inner cylinder 10. In addition, it is preferable that the material of the inner cylinder 10 is not corroded by the high tension coating liquid, which can prevent contamination of the high tension coating liquid by foreign substances.

And, the bottom of the inner cylinder 10 has a shape inclined to any one side, it has a configuration that can drain the precipitate by mounting the drain pipe 12 provided with the valve 13 in this inclined portion.

The size of the outer cylinder 20 is set to such an extent that the distance between the inner surface of the outer cylinder 20 and the outer surface of the inner cylinder 10 is slightly apart to maintain a predetermined distance.

And, the partition 30 is installed between the outer surface of the inner cylinder 10 and the inner surface of the outer cylinder 20, the partition 30 is connected to the inner cylinder 10 and the outer cylinder 20 to the inner cylinder 10 The outer cylinder 20 is to be maintained inside.

In addition, the partition wall 30 is fixed in a continuous shape to have a constant inclination along the surface of the inner cylinder 10, that is, a shape that is wound around the surface of the inner cylinder 10 in a spiral shape as a whole.

The partition 30 has a shape in which the spiral pitch is set to have a shape wound several times on the surface of the inner cylinder 10, so that the partition 30 is disposed up and down a predetermined distance when looking at the cross-sectional shape.

The space formed by the inner cylinder 10, the outer cylinder 20, and the partition wall 30 provides a path P for transferring the heat medium, which will be described later, and the size of the path P is one that determines the flow rate of the heat medium. It becomes a factor.

The outer cylinder 20 is preferably made of a heat insulating material that is not easily thermally cut, and has a sufficient rigidity to support the inner cylinder 10 in a stirred state filled with a high tension coating liquid. When the outer cylinder 20 is formed of a heat insulating material, it is useful to minimize the temperature change of the high-tension coating solution filled and stirred in the inner cylinder 10 by maximally suppressing the external heat passing through the outer cylinder 20 toward the inner cylinder 10. Do.

Of course, the outer cylinder 20 is fixedly installed on the equipment frame (not shown) or the floor constituting the advanced electrical steel sheet manufacturing equipment.

The outer cylinder 20 is provided with a heat medium supply pipe 22 and a heat medium discharge pipe 24 for supplying and discharging the heat medium selected and used as water. At this time, the heat medium supply pipe 22 is arranged to supply the heat medium at one end of the path (P) and the heat medium discharge pipe (24) is arranged to discharge the heat medium at the other end of the path (P), the heat medium is a path (P) is indirect heat exchanged with the high tension coating liquid of the inner cylinder 10 while being transferred from one end portion to the other end portion.

The flow rate and temperature of the heat medium flowing indirectly with the high tension coating liquid while flowing through the path P may be set to an optimal state for efficiency of heat transfer calculated by a conventional method.

Detailed description of the configuration for supplying the heat medium to the heat medium supply pipe 22 is omitted. This is sufficient if it is a structure which supplies a heat medium to the heat medium supply pipe 22 from a heat medium supply source (not shown) through the piping, a valve, and a pump conventionally known.

In addition, by the indirect heat exchange with the heat medium of the heat medium supply pipe 22, the temperature of the high tension coating liquid of the inner cylinder 10 is adjusted to a predetermined range, for example, about 20 ° C, and the temperature of the high tension coating liquid is adjusted to the temperature and flow rate of the heat medium. Is determined by

And, the temperature of the high tension coating liquid can be adjusted by the operator by changing the temperature and flow rate of the heat medium by manual operation, or a temperature measuring sensor (not shown) for measuring the temperature of the heat medium and high tension coating liquid, and this temperature measuring sensor It is also possible to have a control unit (not shown) for setting the temperature and the flow rate of the heat medium by the temperature value provided by the configuration that can automatically perform the temperature control of the high tension coating liquid.

The upper portion of the inner cylinder 10 and the outer cylinder 20 is covered by a cover 40, the cover 40 has a high-tension coating liquid supply port 42 that can be opened and closed by the door 43 to supply a high-tension coating liquid Is formed.

In addition, the high tension coating liquid discharge pipe 50 is mounted to penetrate the upper one side of the inner cylinder 10 and the outer cylinder 20, and the high tension coating liquid discharge pipe 50 is positioned at or slightly lower than the central portion of the inner cylinder 10. It extends to and is disposed to discharge the high tension coating liquid to the outside at the position, which allows to discharge only the high tension coating liquid of the pure component that does not contain the precipitate when the precipitate is formed at the bottom of the inner cylinder (10). Of course, the high tension coating liquid discharge pipe 50 is provided with a valve 52, the valve 52 is opened when the high tension coating liquid is sufficiently stirred to homogenize and have a temperature in a predetermined range to discharge the high tension coating liquid.

The cover 40 is provided with a stirring motor 60, the rotating shaft 62 rotated by the stirring motor 60 extends through the cover 40 to the inside of the inner cylinder 10.

In addition, two agitating blades 64 and 65 are mounted on the rotary shaft 62 so as to be disposed at a predetermined distance apart from each other, and the agitating blades 64 and 65 are applied to the high tension coating liquid when the rotary shaft 62 rotates. It is configured to move toward the opposite stir blade.

That is, the stirring blade 64 located in the upper portion moves the high tension coating solution toward the stirring blade 65 located in the lower portion, and the stirring blade 65 located in the lower portion moves the high tension coating solution toward the stirring blade 64 located in the upper portion. Configured to move.

In this configuration, the high tension coating liquid, which was on the upper side of the inner cylinder 10 by the stirring blades 64 and 65, moves downward along the direction parallel to the rotating shaft 62, and then the boundary between the stirring blades 64 and 65. After moving outward in the direction of the stirring to move back to the upper portion, the high tension coating liquid in the lower side of the inner cylinder 10 is moved to the upper side in the direction parallel to the axis of rotation (62) and then stirring blades (64, 65) At the boundary between them, they move outward and then along the stirring path, which moves downward.

The agitation of the above-described form has a great agitation effect even when the stirring blades 64 and 65 have a low rotational speed, and also generates bubbles generated when the stirring blades 64 and 65 are rotated at an excessively high speed. Can be prevented.

According to the high tension coating liquid storage tank of the advanced electrical steel sheet manufacturing equipment as described above, the temperature of the high tension coating liquid can be maintained in a predetermined range by indirect heat exchange with the heat medium supplied to the outside of the inner cylinder for storing and stirring the high tension coating liquid. It has an effect of preventing deterioration of quality due to temperature change.

In addition, the agitation of the high tension coating solution is optimally controlled by a plurality of stirring vanes installed in the upper and lower parts and moving in the direction facing each other, while the generation of vortices is suppressed while the homogeneity and the viscosity of the high tension coating solution are in an appropriate range. It has an effect that can be maintained.

Claims (3)

In the tank for storing the high-tensile coating liquid used for manufacturing high-grade electrical steel sheet, An inner tank in a container shape for containing a high tension coating liquid; An outer tank having a container shape installed to surround the outside of the inner tank; A path formed between the side of the inner tank and the outer tank to provide a passage through which the heat medium moves; The tank for high tension coating liquid storage of the high-grade electrical steel sheet manufacturing equipment, characterized in that it is installed inside the inner tank and comprises a pair of stirring blades spaced apart from each other by a predetermined distance. The high tension coating liquid storage tank of claim 1, wherein the pair of stirring blades is formed to move the high tension coating liquid in a direction facing each other. The high tension coating liquid storage tank of claim 1, wherein the path is formed by a partition wall provided in a spiral shape along the circumferential direction of the inner cylinder and the outer cylinder.

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