KR20140011078A - Apparatus of managing viscosity of solution in drip pan - Google Patents

Abstract

Disclosed is an apparatus for maintaining and managing the viscosity of organic coating solution for a drip pan capable of improving the quality of a steel plate by consistently maintaining and managing the viscosity of organic coating solution performing organic coating on a surface of a steel plate. An embodiment of the apparatus for maintaining and managing the viscosity of organic coating solution for a drip pan includes: a drip pan storing organic coating solution in an accommodation space thereof; a heating medium circulation unit preventing the change in viscosity by controlling the temperature of the organic coating solution and inducing heat-exchange to be generated between the heating medium and the organic coating solution by supplying the high temperature heating medium to the inside of the drip pan; and a heating medium operation controlling unit controlling the operation of the heating medium circulation unit by detecting the viscosity of organic coating solution stored in the drip pan. [Reference numerals] (AA) S transferring direction

Description

Viscosity maintenance device for drip pan organic coating solution {APPARATUS OF MANAGING VISCOSITY OF SOLUTION IN DRIP PAN}

The present invention relates to a viscosity maintenance device for drip pan organic coating solution, and more particularly, to a viscosity of an organic coating solution for organic coating coating the surface of a steel sheet at a constant level at all times. It relates to a maintenance device.

In general, the surface of the steel sheet produced in steel mills is subjected to various coating treatments as necessary, among which the organic coating method of organic coating of the surface of the steel sheet is applied to various products, including white resin sheet for home appliances High frequency And this organic coating operation is carried out through a coating apparatus using a drip pan.

1 is a diagram showing a general arrangement relationship between a drip pan, a pickup roll, a coating roll, and a backup roll required for carrying out an organic coating operation of a steel sheet.

The illustrated coating apparatus 1 is provided with a drip pan 10 at one lower side of the coating roll R2. The drip pan 10 is a container having an open top, and is a member for storing an organic coating solution L (also referred to as an 'organic solvent' or a 'paint') through an accommodating space therein.

And the pick-up roll (R1) is mounted through the open portion of the drip pan 10. The pickup roll R1 is a roll member that rotates while a part of the outer diameter is immersed in the organic coating solution L contained in the drip pan 10. The pickup roll R1 rotates around the outer circumference thereof as the pickup roll R1 rotates. Coating solution (L) is evenly buried.

The coating roll R2 is disposed in contact with the pickup roll R1. In other words, the coating roll R2 is another roll member which is installed at a position in contact rotation with the rotation of the pickup roll R1, and the organic coating solution L buried in the pickup roll R1 is mutually It is transferred to the outer circumferential surface of the coating roll R2 through contact rotation of the liver.

On the other hand, the steel sheet (S) has a movement through the gap between the coating roll (R2) and the backup roll (R3) and wound on the backup roll (R3) and then transferred to the opposite side of the drip pan (10). At this time, the steel sheet (S) and the coating roll (R2) is kept in close contact with each other, the organic coating solution (L) buried on the outer peripheral surface of the coating roll (R2) is in contact with the surface of the steel sheet (S) to be transported Coated. Thereby, the organic coating operation of the steel plate S was performed.

However, when performing the organic coating operation of such a steel sheet, in order to secure excellent coating quality, it is strictly required to control the viscosity of the organic coating solution stored in the drip pan (Drip pan). For this reason, before performing the organic coating operation of the steel sheet, the viscosity check of the organic coating solution has always been preceded, and in some cases, the operation of viscosity control by mixing an appropriate amount of the diluent has been involved.

However, the actual on-site atmosphere in which the organic coating of the steel sheet is performed is greatly influenced by external temperature conditions (particularly, seasonal temperature conditions), and when the temperature change of the organic coating solution stored inside the drip pan is large, It often occurred that the viscosity characteristics of the organic coating solution could not be maintained within a certain level.

Viscosity change of the organic coating solution as a result was to act as a cause of inhibiting the coating quality of the steel sheet, specific examples were a color difference or a surface defect such as scratches or scratches on the coating surface of the steel sheet.

The present invention provides a viscosity maintenance device of the drip pan organic coating solution that can maintain the viscosity of the organic coating solution for the organic coating of the steel sheet at a constant level at all times.

In addition, the present invention provides a viscosity maintenance device of the drip pan organic coating solution that can actively respond to the change in viscosity by checking the viscosity of the organic coating solution stored in the drip pan in an automated manner during the organic coating operation of the steel sheet .

Device for maintaining the viscosity of the drip pan organic coating solution according to an embodiment of the present invention, the drip pan for storing the organic coating solution in the inner receiving space; A heating medium circulating unit for supplying a high temperature heating medium into the drip pan to induce heat exchange between the heating medium and the organic coating solution and preventing a viscosity change according to temperature control of the organic coating solution; And a heating medium driving control unit which detects the viscosity of the organic coating solution stored in the drip pan and controls the driving of the heating medium circulating unit.

The heating medium circulation unit, the storage tank for storing the heating medium; A heater for heating the heating medium stored in the storage tank according to a control signal applied from the heating medium driving control unit; And a heat exchanger configured to circulate the heating medium heated by the heater in the drip pan.

The heating medium circulation unit may further include a heating medium temperature adjusting unit configured to control an on / off operation and heating temperature of the heater by receiving a control signal applied from the heating medium driving control unit.

The heat exchanger may be provided with a tube-shaped channel through which a heating medium flows on at least one of an inner wall and a bottom surface of the drip pan, and an inner flow direction of the heating medium is a long side or a short side of the drip pan. Can be formed horizontally accordingly.

The heating medium circulation unit, the heating medium supply pipe is connected between the storage tank and the inlet of the heat exchanger, and supplies a heating medium heated by the heater to the heat exchanger; And a heating medium connected between an outlet of the heat exchanger and the storage tank, and flowing the inside of the heat exchanger and recovering a heating medium having completed heat exchange with the organic coating solution stored in the drip pan to the storage tank. It includes; recovery piping.

The heating medium supply pipe may be provided with a supply control valve and a driving pump for controlling the opening and closing according to a control signal applied from the heating medium driving control unit.

The heating medium driving control unit includes a viscosity measuring unit for detecting whether the viscosity of the organic coating solution stored in the drip pan in real time or at a predetermined time interval to check whether the detected viscosity is out of a predetermined viscosity reference range.

According to the viscosity maintenance management apparatus of the drip pan organic coating solution of the present invention, the viscosity of the organic coating solution for organic coating the surface of the steel sheet can be maintained at a constant level at all times.

In particular, the viscosity of the organic coating solution accommodated inside the drip pan varies greatly depending on external temperature conditions (e.g., seasonal factors, i.e. winter temperature drop), which prevents the viscosity from changing and maintains the viscosity at all times within a certain range. have. Thereby, the coating quality of the organic-coated steel sheet product can be improved.

In addition, according to the viscosity maintenance device of the drip pan organic coating solution of the present invention, by checking the viscosity of the organic coating solution stored in the drip pan during the organic coating operation of the steel sheet in an automated manner it can actively respond to the change in viscosity.

In particular, by measuring the viscosity of the organic coating solution in real time or at set time intervals, if the measured viscosity is out of the reference range it can increase the temperature of the organic coating solution by circulating the supply and recoverable heating medium into the drip pan. . As a result, the viscosity of the organic coating solution can be quickly maintained within the reference range.

BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a simplified diagram illustrating a general arrangement relationship between a drip pan, a pickup roll, a coating roll, and a backup roll required for carrying out an organic coating operation of a steel sheet.
Figure 2 is a conceptual diagram schematically showing a viscosity maintenance device of the drip pan organic coating solution according to an embodiment of the present invention.
Figure 3 is a partial configuration briefly showing the internal structure of the drip pan according to an embodiment of the present invention.
FIG. 4 is a view schematically illustrating a part of a first modified example in which a structure of a heat exchanger installed in the drip pan shown in FIG. 3 is changed.
FIG. 5 is a view schematically illustrating a second configuration in which the structure of the heat exchanger installed in the drip pan shown in FIG. 3 is changed.
6 is a conceptual view schematically showing a coating apparatus including a viscosity maintenance device of the drip pan organic coating solution according to an embodiment of the present invention.
FIG. 7 is a comparison table illustrating a state in which an organic coating solution shows a flow state of a curtain form between a pickup roll and a coating roll when the embodiment of the present invention and the conventional comparative example shown in FIG. 1 are followed. .

Hereinafter, with reference to the accompanying drawings will be described in detail with respect to a preferred embodiment of the viscosity maintenance device of the drip pan organic coating solution of the present invention.

The terms and words used in the present specification and claims should not be construed as limited to ordinary or dictionary meanings and the inventor shall appropriately define the concept of the term in order to describe its invention in the best way It should be construed in accordance with the meaning and concept consistent with the technical idea of the present invention. Therefore, the embodiments described in the present specification and the configurations shown in the drawings are only the most preferred embodiments of the present invention, and not all of the technical ideas of the present invention are described. Therefore, It should be understood that various equivalents and modifications may be present.

2 is a conceptual diagram schematically showing a viscosity maintenance device of the drip pan organic coating solution according to an embodiment of the present invention.

As shown, the drip pan organic coating solution maintenance device 100 according to an embodiment of the present invention is a drip pan 101 and the drip pan 101 for storing the organic coating solution (L) in the inner receiving space ) The viscosity of the organic coating solution stored in the heating medium circulation unit 140 and the drip pan 101 to heat exchange between the supplied heating medium and the organic coating solution by supplying a high temperature heating medium (W) to the inside The heating medium driving control unit 170 for controlling the driving of the heating medium circulation unit 140 by detecting the.

The drip pan 101 is a member in the form of a container in which the top is opened and stores the organic coating solution L necessary for the organic coating of the steel sheet S through the inner receiving space.

The drip pan 101 is installed below the pickup roll R1. In particular, the pickup roll R1 is disposed inside the upper opening of the drip pan 101 such that a rotation center is formed at a position lower than the level of the organic coating solution L stored in the drip pan 101. Accordingly, a part of the outer diameter of the pickup roll R1 is kept immersed in the organic coating solution L, and the organic coating solution L stored inside the drip pan 101 is picked up when the pickup roll R1 is rotated. It is evenly spread along the outer circumference of the roll R1. The upper one side of the pickup roll (R1) is rotatably disposed in a state in which the coating roll (R2) in contact. That is, the coating roll R2 is a roll member which is disposed in contact with the pickup roll R1 in association with the rotation of the pickup roll R1. The coating solution L is transferred around the outer circumference of the coating roll R2. And on the opposite side of the coating roll R2, the backup roll R3 which winds and conveys the steel plate S in a predetermined space | interval is provided rotatably.

And the steel plate S is conveyed upward through the predetermined space | interval provided between the coating roll R2 and the backup roll R3. At this time, the organic coating solution (L) buried around the outer circumference of the coating roll (R2) is transferred to the contact surface of the steel sheet (S) to perform an organic coating operation.

Although the preferred embodiment of the drip pan 101 is shown as having a box shape of the tank shape of the upper opening as shown in Figs. 4 to 6, this does not limit the present invention and may be implemented slightly differently from other shapes. It's okay.

The heating medium circulation unit 130 supplies a high temperature heating medium (W) into the drip pan 101 to induce heat exchange between the heating medium (W) and the organic coating solution (L) to form an organic coating solution (L). As a means for heating, as a result, the viscosity change of the organic coating solution (L) is prevented.

As shown in FIG. 2, the heating medium circulation unit 130 not only stores the heating medium W, but also has a heating medium storage unit 133 having a function of heating the stored heating medium W, and a heating medium. It includes a heat exchanger 131 for flowing the (W) into the drip pan 101 to increase the temperature of the organic coating solution (L).

The heating medium storage unit 133 includes a storage tank 134 for storing the heating medium and a heater 136 for heating the heating medium W stored in the storage tank 134 to increase the temperature. In the embodiment of the present invention, the heating medium W may use water, and the heater 136 may use an electric heater. In addition, it is also possible to use a heating means such as hot air or a boiler conventionally known according to various embodiments.

The on / off operation of the heater 136 and the setting of the heating temperature may be controlled according to the control signal C1 applied from the heating medium driving control unit 170, and for this purpose, as a detailed configuration of the heating medium circulating unit 130. The heating medium temperature control unit 137 may be further included.

The heating medium temperature controller 137 is a wired / wireless communication system with the heating medium driving control unit 170. The heating medium temperature adjusting unit 137 receives the control signal C1 output from the heating medium driving control unit 170 and supplies it to the heater 136. The operation of the heater 136 is controlled by controlling the electric power.

In addition, the heating medium W heated up to a constant temperature due to the action of the heater 136 in the heating medium storage unit 133 is supplied to the heat exchanger 131 installed in the drip pan 101 through a pipe.

Referring to FIG. 2, a pipe for supplying the heated medium W heated in the heating medium storage unit 133 to the heat exchanger 131 or recovering the heat medium after heat exchange to the heating medium storage unit 133 is illustrated. It is. This is referred to as a heating medium supply pipe 141, heating medium recovery pipe 143.

The heating medium supply pipe 141 is a pipe connected between the storage tank 134 and the inlet of the heat exchanger 131 and supplies the heating medium W heated by the heater 136 to the heat exchanger 131. In charge of. In addition, the heating medium recovery pipe 143 is a pipe connected between the outlet of the heat exchanger 131 and the storage tank 134. The heating medium supplied to the heat exchanger performs internal flow and stores it after the heat exchange with the organic coating solution. It is responsible for recovering tanks.

In addition, a supply pump 145 and supply control valves 147 and 149 are provided on the heating medium supply pipe 141. Like the heater 136 described above, the supply pump 145 and the supply control valves 147 and 149 may operate according to a control signal applied from the heating medium driving control unit 170.

The heat exchanger 131 is installed inside the drip pan 101, and the high temperature heating medium W received through the heating medium supply pipe 141 and the organic coating solution L stored in the drip pan 101. It is a device that induces heat exchange in the liver. The heat exchanger 131 may be formed to be disposed around the inner wall and bottom of the drip pan 101 as a whole, or may be formed to be disposed on only one of these surfaces. Referring to FIG. 2, it can be seen that the heat exchanger 131 is horizontally formed along the longitudinal direction (ie, the long side direction) on the inner wall surface of the drip pan 101. As can be seen from the enlarged view of the part of the enlarged heat exchanger 131, the heat exchanger 131 is composed of a flow channel in the form of a tube to allow the heating medium (W) to flow inside, which is a conventional heat exchanger Similarly, a zigzag heating medium flow path is formed. Since a specific shape of such a heat exchanger can be confirmed through FIGS. 4 to 6, the description thereof will be described in detail when describing the corresponding drawings.

The heating medium driving control unit 170 detects the viscosity of the organic coating solution L stored in the drip pan 101 to control the overall driving of the heating medium circulating unit 130 described above. That is, the temperature of the heating medium W supplied to the heat exchanger 131 as well as controlling the operation of the supply pump 145 and the supply control valves 147 and 149 which are related to the flow of the heating medium W. The operation of the heater 136, which is related to the configuration, may be controlled.

To this end, the heating medium drive control unit 170 should be able to grasp the viscosity of the organic coating solution (L) stored in the drip pan 101 in real time or at set time intervals during the organic coating operation of the steel sheet (S). If it is determined that the detected viscosity of the organic coating solution L is out of the preset viscosity range, the heating medium circulation unit 130 is immediately driven to drive the high temperature heating medium W into the drip pan 101. This is because it is necessary to raise the temperature of the organic coating solution (L) to which the temperature is lowered due to external influence to a certain level. For this reason, the heating medium drive control unit 170 includes a viscosity measuring unit 160 that can detect the viscosity of the organic coating solution stored in the drip pan in real time or at set time intervals.

Viscosity measuring unit 160 detects the viscosity of the organic coating solution (L) stored in the drip pan 101 during the organic coating operation of the steel sheet (S), whether the detected viscosity is out of the preset viscosity reference range You can easily check

3 is a view illustrating a brief configuration of an internal structure of a drip pan according to an embodiment of the present invention.

Referring to FIG. 3, a heat exchanger 131 in which a tube-shaped flow channel is disposed in a zigzag shape along a short side of the drip pan 101 (that is, the X-axis direction) on one surface of an inner wall of the drip pan 101 is illustrated. You can check the appearance.

The inlet of the heat exchanger 131 is connected to the heating medium supply pipe 141, and the outlet of the heat exchanger 131 is connected to the heating medium recovery pipe 143. Accordingly, the supply and recovery of the heating medium (W) can be made smoothly.

As described above, the temperature of the heating medium W supplied through the heat exchanger 131 is relatively high in temperature compared to the organic coating solution L stored in the drip pan 101.

In other words, when the temperature of the organic coating solution L is lower than the initial reference temperature due to the influence of external temperature conditions (especially, low temperature in winter), the relatively high temperature of the heating medium W is exchanged to This is because the function of raising the temperature of the coating solution (L).

Accordingly, when the temperature of the organic coating solution (L) increases to the reference temperature range, the viscosity of the organic coating solution (L) is also adjusted within the set reference viscosity range. Here, since the correlation between temperature and viscosity corresponds to a conventionally known theory, description thereof will be omitted.

In addition, it can be seen that the viscosity measuring unit 160 is installed on the upper side wall of the drip pan 101. The illustrated viscosity measuring unit 160 may be any sensor (i.e., viscometer) conventionally known for the purpose of measuring the viscosity (or viscosity) of the liquid. The viscosity measuring unit 160 is connected to the heating medium driving control unit 170 so as to exchange electrical signals.

As such, the structure of the drip pan 101 having the heat exchanger illustrated in FIG. 3 may be configured to be slightly different from one embodiment to another, and FIGS. 4 and 5 are views illustrating first and second modified examples of the heat exchanger.

Referring to FIG. 4, the structure of the heat exchanger 131a according to the first modified example may be confirmed. In the heat exchanger 131a according to the first modified example, a tube-shaped inner channel is disposed in a zigzag shape along the long side direction (ie, Y-axis direction) of the drip pan through the bottom surface of the drip pan 101.

5, the structure of the heat exchanger 131b according to the second modification can be confirmed. In the heat exchanger 131b according to the second modified example, the inner channel in the form of a tube is disposed in a zigzag shape along the short side direction (ie, the X-axis direction) of the drip pan through the bottom surface of the drip pan 101.

As such, the structure of the heat exchanger inside the drip pan 101 according to the embodiment of the present invention may be implemented in a slightly different form as shown in FIGS. 4 and 5, except for an exemplary embodiment. It may have more various implementations.

6 is a conceptual diagram schematically showing a coating apparatus including a viscosity maintenance device of the drip pan organic coating solution according to an embodiment of the present invention.

As shown, the coating apparatus of the steel sheet, the organic coating solution supply unit 200 to the viscosity maintenance device 100 of the drip pan organic coating solution according to an embodiment of the present invention which has been described with reference to FIGS. .

The organic coating solution L 'before stirring is supplied from the mixing tank 210 to the circulation tank 230 through the solution supply pipe 220. In this case, the valve 222 may be provided in the solution supply pipe 220 to adjust the supply amount.

On the other hand, the organic coating solution L 'before stirring supplied into the circulation tank 230 is agitated by the rotation operation of the screw 234 driven by the motor 232 provided in the circulation tank 230.

After stirring, the organic coating solution L after stirring in the circulation tank 230 is supplied to the drip pan 101 along the organic coating solution supply pipe 250.

At this time, in order to facilitate the supply of the organic coating solution (L) supplied into the drip pan 101, a separate pump 240 and valves (251, 254) may be provided on the pipe.

On the other hand, the organic coating solution (L) stored in the drip pan 101 is recovered to the circulation tank 230 and undergoes a circulation process that is stirred again, for this purpose between the drip pan 101 and the circulation tank 230 The organic coating solution recovery pipe 260 is connected.

As such, the organic coating solution supply pipe 250 and the organic coating solution recovery pipe 260 are respectively provided between the drip pan 101 and the circulation tank 230, and stored in the drip pan 101. The organic coating solution (L) can be repeatedly circulated by a predetermined amount.

In addition, a drain pipe 236 is provided at a lower portion of the circulation tank 230, and a drain valve 238 is provided on the drain pipe 236, which is optionally stored inside the circulation tank 230. It serves to adjust the amount of the organic coating solution (L). In addition, it is responsible for the discharge of dirty sediment to the outside.

FIG. 7 is a comparison table illustrating a state in which an organic coating solution shows a flow state of a curtain form between a pickup roll and a coating roll when the embodiment of the present invention and the conventional comparative example shown in FIG. 1 are followed. to be.

According to the embodiment of the present invention, the temperature of the organic coating solution is within the normal temperature range 25 ~ 30 ℃ of the organic coating operation, it can be seen that the viscosity also falls within the normal viscosity range as 65 ㅁ 5 seconds.

On the contrary, in accordance with a conventional comparative example that does not follow the embodiment of the present invention, the temperature of the organic coating solution is 15 ~ 19 ℃ outside the normal temperature range of the above, the viscosity at this time is 85 ㅁ outside the normal viscosity range The viscosity changed up to 5 seconds.

That is, according to the embodiment of the present invention, the temperature of the organic coating solution stored in the drip pan is not affected by the low temperature of the winter, it can be seen that little or no change in viscosity. In contrast, according to the conventional comparative example, the temperature of the organic coating solution stored in the drip pan was drastically lowered by being affected directly or indirectly by the low temperature in winter, and thus the viscosity was also outside the normal range. .

As shown in FIG. 7, the organic coating solution curtain shape (hereinafter, referred to as a 'solution curtain shape') flowing between the pickup roll R1 and the coating roll R2 is the same as that of the present embodiment. The results are shown differently in the comparative example.

That is, the solution curtain shape shown in the comparative example does not have a normal curtain shape as in this embodiment, and this difference is transferred as it is to the steel sheet S to which the organic coating solution is coated, so that various types of defects (for example, color) Tea, scratch).

On the contrary, in the present embodiment, since the normal solution curtain shape is shown as shown regardless of the change in the external temperature condition, it is possible to prevent the occurrence of various types of defects that may appear in the comparative example.

As described above, according to the apparatus for maintaining viscosity of the drip pan organic coating solution of the present invention, the viscosity of the organic coating solution for organic coating the surface of the steel sheet can be maintained at a constant level at all times.

In particular, the viscosity of the organic coating solution accommodated in the drip pan is greatly changed depending on the external temperature conditions (for example, low temperature in winter), it is possible to maintain the viscosity within a certain level by preventing the viscosity changes. As a result, the quality of organic coated steel sheet products can be expected.

And the viscosity of the organic coating solution stored in the drip pan during the organic coating of the steel sheet in an automated manner can be actively respond to the change in viscosity.

In particular, by measuring the viscosity of the organic coating solution in real time or at set time intervals, if the measured viscosity is out of the reference range it can increase the temperature of the organic coating solution by circulating the supply and recoverable heating medium into the drip pan. . As a result, the viscosity of the organic coating solution can be quickly maintained within the reference range, thereby reducing the labor of the operator.

It has been described above with respect to the preferred embodiment of the viscosity maintenance device of the present invention drip pan organic coating solution.

It is to be understood that the foregoing embodiments are illustrative in all respects and not restrictive, the scope of the invention being indicated by the claims that follow, rather than the foregoing detailed description. And it should be construed that the meaning and scope of the claims, as well as all changes or modifications derived from the equivalent concept are included in the scope of the present invention.

L: organic coating solution R1: pickup roll
R2: coating roll R3: backup roll
S: steel plate W: heating medium
100: drip pan organic coating solution viscosity maintenance device
101: drip pan
130: heating medium circulation
131: heat exchanger 133: heating medium storage unit
134: storage tank 136: heater
137: heating medium temperature control unit
141: heating medium supply piping 143: heating medium recovery piping
145: supply pump 147, 149: supply control valve
160: viscosity measuring unit
170: heating medium drive control unit
200: organic coating solution supply unit
210: mixing tank 220: mixing solution supply piping
230: circulation tank 232: motor
234: screw member 236: drain pipe
238: drain valve 240: pump
250: organic coating solution supply piping 260: organic coating solution recovery piping

Claims (7)

Drip pan for storing the organic coating solution in the inner receiving space;
A heating medium circulating unit for supplying a high temperature heating medium into the drip pan to induce heat exchange between the heating medium and the organic coating solution and preventing a viscosity change according to temperature control of the organic coating solution;
And a heating medium driving control unit which detects the viscosity of the organic coating solution stored in the drip pan and controls the driving of the heating medium circulating unit. The method according to claim 1,
The heating medium circulation unit,
A heating medium storage unit including a storage tank storing a heating medium, a heater heating the heating medium stored in the storage tank according to a control signal applied from the heating medium driving control unit;
Device for maintaining the viscosity of the drip pan organic coating solution comprising a heat exchanger for circulating the heating medium heated by the heater in the drip pan. The method according to claim 2,
The heating medium circulation unit,
The drip pan organic coating solution viscosity maintenance device further comprising; a heating medium temperature adjusting unit for receiving the control signal applied from the heating medium driving control unit to control the on / off operation and heating temperature of the heater. The method according to claim 2,
The heat exchanger
On the at least one surface of the inner wall and the bottom surface of the drip pan is installed a tube-shaped channel in which the heating medium flows,
An apparatus for maintaining viscosity of a drip pan organic coating solution in which the inner flow direction of the heating medium is formed horizontally along a long side or a short side of the drip pan. The method according to claim 2,
The heating medium circulation unit,
A heating medium supply pipe connected to the storage tank and an inlet of the heat exchanger and supplying a heating medium heated by the heater to the heat exchanger;
The heating medium is connected between the outlet of the heat exchanger and the storage tank, and the heating medium recovers the heating medium after the heat exchange with the organic coating solution stored in the drip pan and flows inside the heat exchanger to the storage tank. Device for maintaining viscosity of drip pan organic coating solution including piping. The method according to claim 5,
The heating medium supply pipe,
Device for maintaining the viscosity of the drip pan organic coating solution is provided with a supply control valve which is opened and closed controlled by a control signal applied from the heating medium drive control unit. The method according to claim 1,
The heating medium drive control unit,
And a viscosity measuring unit for detecting whether the detected viscosity is out of a preset viscosity reference range by detecting the viscosity of the organic coating solution stored in the drip pan at a real time or at a set time interval. Device for maintaining the viscosity of the solution.

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