Temperature control device for preparation of waterproof heat-insulating coating

Abstract

The utility model belongs to the field of coating temperature control devices, and particularly relates to a waterproof heat insulation coating preparation temperature control device which comprises two jackets. The two jackets are installed outside the coating preparation kettle, the exteriors of the two jackets are connected with a waste heat recovery assembly, the interiors of the two jackets are connected with a flow guide assembly, and the exteriors of the two jackets are connected with a fixing assembly; by arranging the waste heat recovery assembly, after heating media such as hot water and steam enter two jackets to heat waterproof heat-insulation paint in the paint preparation kettle in a segmented mode, a first discharge valve is opened, medium waste liquid such as the hot water can be discharged from a first discharge pipe, and a conveying pump is matched with an input pipe and a communicating pipe to extract the waste liquid to an output pipe; and waste liquid with waste heat enters the coil pipe and then preheats raw materials in the raw material preheating cylinder, so that the coating raw materials can be preheated, the coating heating efficiency is improved, the waste heat is fully recycled, and heat energy waste is prevented.

Description

Technical Field

[0001] This utility model relates to the field of coating temperature control devices, specifically a temperature control device for the preparation of waterproof and heat-insulating coatings. Background Technology

[0002] The temperature control device in the preparation process of waterproof and heat-insulating coatings is a special equipment used to control the temperature at each stage of the production of waterproof and heat-insulating coatings.

[0003] Chinese patent application number CN202223304619.0 discloses a temperature-controlled water-based coating mixing machine. The machine preheats the water inside the casing using a heating pipe, and then uses this water to heat the raw materials in the mixing chamber. This ensures uniform heating of the water-based coating, resulting in a better final product. Furthermore, when raw materials are added to the mixing chamber, the chamber sinks due to gravity, and the water inside the casing is automatically introduced into the mixing chamber by a water-adding component to mix with the raw materials, eliminating the need for dedicated personnel to monitor the process.

[0004] However, most existing temperature control devices for coatings are difficult to perform segmented temperature control. The medium does not stay in the temperature control device for long enough to fully exert its effect. Furthermore, the waste heat of the medium used for temperature control is difficult to recover and reuse, which easily leads to the waste of thermal energy. Therefore, a temperature control device for the preparation of waterproof and heat-insulating coatings is proposed to address the above problems. Utility Model Content

[0005] To overcome the shortcomings of existing technologies, most existing coating temperature control devices are unable to perform segmented temperature control, the medium does not stay in the temperature control device for a long time, making it difficult to fully utilize its effectiveness, and the waste heat of the medium used for temperature control is difficult to recover and reuse, which easily leads to the problem of wasting thermal energy. This utility model proposes a temperature control device for the preparation of waterproof and heat-insulating coatings.

[0006] The technical solution adopted by this utility model to solve its technical problem is: a temperature control device for preparing waterproof and heat-insulating coatings, including two jackets; the two jackets are installed outside the coating preparation kettle, a waste heat recovery component is connected to the outside of the two jackets, a flow guiding component is connected to the inside of the two jackets, a fixing component is connected to the outside of the two jackets, and a stirring component is connected to the inside of the coating preparation kettle.

[0007] The waste heat recovery assembly includes a raw material preheating cylinder, a preheating sleeve connected to the outside of the raw material preheating cylinder, a coil fixedly connected inside the preheating sleeve, a sealing cap threadedly connected to the upper end of the coating preparation kettle, the raw material preheating cylinder fixedly connected to the upper end of the sealing cap, a conveying pump fixedly connected to the upper end of the sealing cap, an input pipe fixedly connected to the input end of the conveying pump, an output pipe fixedly connected to the output end of the conveying pump, the output pipe fixedly connected to the coil, the output pipe passing through the preheating sleeve and fixedly connected to the preheating sleeve, a discharge pipe fixedly connected to the left end of each of the two jackets, a discharge valve fixedly connected to the outside of each discharge pipe, a connecting pipe fixedly connected to the left end of each discharge pipe, a flange fixedly connected to the outside of both the connecting pipe and the input pipe, and two flanges detachably connected by a locking bolt, the locking bolt being threadedly connected to the flange.

[0008] By setting up a waste heat recovery component, a heating medium, such as hot water or steam, is introduced into the two jackets to heat the waterproof and heat-insulating coating inside the coating preparation vessel in stages. After opening the discharge valve, the waste liquid containing the hot water or other medium will be discharged from the discharge pipe. The transfer pump, together with the input pipe and connecting pipe, will draw the waste liquid into the output pipe, and finally into the coil. After the waste liquid with residual heat enters the coil, it will preheat the raw materials inside the raw material preheating cylinder, thereby preheating the coating raw materials, improving the heating efficiency of the coating, fully recovering and utilizing the waste heat, and preventing the waste of heat energy. In addition, the upper and lower jackets have independent temperature control functions, so that staged heating or cooling can be selected according to the different properties of the coating.

[0009] The flow guiding assembly includes multiple inclined flow guiding plates, which are fixedly connected inside the two jackets. The multiple inclined flow guiding plates are arranged at equal intervals. Multiple protrusions are fixedly connected to the outside of the inclined flow guiding plates, and the multiple protrusions are arranged at equal intervals.

[0010] By setting up a flow guiding component, multiple inclined flow guiding plates have a certain angle between them and the inner wall of the jacket, which can guide the flow of the medium. In addition, the flow guiding plates, together with multiple protrusions, can prolong the residence time of the medium in the jacket, thereby making fuller use of the medium heating or cooling effect.

[0011] Preferably, a temperature sensor is fixedly fitted into the inner wall of each of the two jackets, and a display is fixedly connected to the front end of each of the two jackets.

[0012] Preferably, the right ends of both jackets are fixedly connected to an injection pipe, and an injection valve is fixedly connected to the outside of the injection pipe.

[0013] Preferably, the right end of the coil is fixedly connected to a second discharge pipe, the second discharge pipe passes through the preheating sleeve and is fixedly connected to the preheating sleeve, and the outside of the second discharge pipe is fixedly connected to a second discharge valve.

[0014] Preferably, the lower end of the raw material preheating cylinder is fixedly connected to a discharge pipe, the discharge pipe passes through the sealing cover and is fixedly connected to the sealing cover, a discharge solenoid valve is fixedly connected to the outside of the discharge pipe, and a controller is fixedly connected to the front end of the raw material preheating cylinder, the controller being electrically connected to the discharge solenoid valve.

[0015] Preferably, the fixing component includes a fixing ring, which is fixedly connected to the outside of the coating preparation vessel. The upper end of the upper jacket is fixedly connected to a plurality of fixing plates, which are detachably connected to the outside of the fixing ring by locking screws. The locking screws are threadedly connected to the fixing ring and the fixing plates.

[0016] Preferably, both of the jackets are fixedly connected to the outside of a flange two, and the two flange two are detachably connected by a locking bolt two, which is threadedly connected to the flange two.

[0017] Preferably, the stirring assembly includes a motor, which is fixedly connected to the upper end of the sealing cover. The output end of the motor is fixedly connected to a stirring shaft, which passes through the sealing cover and is rotatably connected to it. A stirring paddle is fixedly connected to the outside of the stirring shaft. A discharge pipe is fixedly connected to the lower end of the coating preparation vessel, and a discharge valve is fixedly connected to the outside of the discharge pipe.

[0018] The advantages of this utility model are:

[0019] 1. This utility model, by setting up a waste heat recovery component, utilizes heating media such as hot water or steam to enter two jackets to heat the waterproof and heat-insulating coating inside the coating preparation vessel in stages. After opening the discharge valve one, the waste liquid of hot water or other media will be discharged from the discharge pipe one. The delivery pump, together with the input pipe and connecting pipe, draws the waste liquid to the output pipe, and finally enters the coil. After the waste liquid with residual heat enters the coil, it will preheat the raw materials inside the raw material preheating cylinder, thereby preheating the coating raw materials, improving the heating efficiency of the coating, fully recovering and utilizing the waste heat, preventing the waste of heat energy, and the upper and lower jackets have independent temperature control functions, so that staged heating or cooling can be selected according to the different properties of the coating.

[0020] 2. By setting up a flow guiding component, the present invention has multiple inclined flow guiding plates with a certain inclined angle between them and the inner wall of the jacket, which can guide the flow of the medium. In addition, the flow guiding plates, together with multiple protrusions, can prolong the residence time of the medium in the jacket, thereby making fuller use of the heating or cooling effect of the medium. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0023] Figure 2 This is a schematic diagram of the stirring assembly structure of this utility model;

[0024] Figure 3 This is a schematic diagram of the flow guiding component structure of this utility model;

[0025] Figure 4 This is a schematic diagram of the waste heat recovery component structure of this utility model;

[0026] Figure 5 This is a schematic diagram of the coil structure of this utility model;

[0027] Figure 6 This is a schematic diagram of the bottom structure of the coating preparation vessel of this utility model.

[0028] In the diagram: 1. Jacket; 2. Coating preparation kettle; 3. Waste heat recovery assembly; 301. Raw material preheating cylinder; 302. Preheating jacket; 303. Coil; 304. Sealing cap; 305. Transfer pump; 306. Input pipe; 307. Output pipe; 308. Discharge pipe 1; 309. Discharge valve 1; 310. Connecting pipe; 311. Flange 1; 312. Locking bolt 1; 313. Temperature sensor; 314. Display; 315. Injection pipe; 316. Injection valve; 31 7. Discharge pipe II; 318. Discharge valve II; 319. Discharge pipe; 320. Discharge solenoid valve; 321. Controller; 4. Flow guiding assembly; 401. Inclined flow guide plate; 402. Protrusion; 5. Fixing assembly; 501. Fixing ring; 502. Fixing plate; 503. Locking screw; 504. Flange II; 505. Locking bolt II; 6. Stirring assembly; 601. Motor; 602. Stirring shaft; 603. Stirring paddle; 604. Discharge pipe; 605. Discharge valve. Detailed Implementation

[0029] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model.

[0030] The following is in conjunction with the appendix Figure 1-6 This application will be described in further detail.

[0031] This application discloses a temperature control device for preparing waterproof and heat-insulating coatings. (Refer to...) Figures 1-6 A temperature control device for preparing waterproof and heat-insulating coatings includes two jackets 1; the two jackets 1 are installed outside the coating preparation vessel 2, the outside of the two jackets 1 are connected to a waste heat recovery component 3, the inside of the two jackets 1 are connected to a flow guiding component 4, the outside of the two jackets 1 are connected to a fixing component 5, and the inside of the coating preparation vessel 2 is connected to a stirring component 6.

[0032] The waste heat recovery assembly 3 includes a raw material preheating cylinder 301, a preheating jacket 302 externally connected to the raw material preheating cylinder 301, a coil 303 fixedly connected internally to the preheating jacket 302, a sealing cap 304 threadedly connected to the upper end of the coating preparation vessel 2, the raw material preheating cylinder 301 fixedly connected to the upper end of the sealing cap 304, a transfer pump 305 fixedly connected to the upper end of the sealing cap 304, an input pipe 306 fixedly connected to the input end of the transfer pump 305, and an output pipe 307 fixedly connected to the output end of the transfer pump 305. The output pipe 307 is connected to the coil. 303 is fixedly connected, and the output pipe 307 passes through the preheating sleeve 302 and is fixedly connected to the preheating sleeve 302. The left ends of both jackets 1 are fixedly connected to the discharge pipe 308. The outside of the discharge pipe 308 is fixedly connected to the discharge valve 309. The left end of the discharge pipe 308 is fixedly connected to the connecting pipe 310. The outside of the connecting pipe 310 and the input pipe 306 are fixedly connected to the flange 311. The two flanges 311 are detachably connected by the locking bolt 312. The locking bolt 312 is threadedly connected to the flange 311.

[0033] By setting up a waste heat recovery component 3, a heating medium, such as hot water or steam, is used to enter the two jackets 1 to heat the waterproof and heat-insulating coating inside the coating preparation vessel 2 in stages. After opening the discharge valve 309, the waste liquid of the hot water or other medium will be discharged from the discharge pipe 308. The transfer pump 305, together with the input pipe 306 and the connecting pipe 310, draws the waste liquid to the output pipe 307, and finally enters the coil 303. After the waste liquid with residual heat enters the coil 303, it will preheat the raw materials inside the raw material preheating cylinder 301, thereby preheating the coating raw materials, improving the heating efficiency of the coating, fully recovering and utilizing the waste heat, and preventing the waste of heat energy. In addition, the upper and lower jackets 1 have independent temperature control functions, so that segmented heating or cooling can be selected according to the different properties of the coating.

[0034] The flow guiding assembly 4 includes multiple inclined flow guiding plates 401, which are fixedly connected inside the two jackets 1. The multiple inclined flow guiding plates 401 are arranged at equal intervals. Multiple protrusions 402 are fixedly connected to the outside of the inclined flow guiding plates 401, and the multiple protrusions 402 are arranged at equal intervals.

[0035] By setting the flow guiding component 4, multiple inclined flow guiding plates have a certain angle of inclination with the inner wall of the jacket 1, which can guide the medium. In addition, the flow guiding plates, together with multiple protrusions 402, can prolong the time that the medium stays in the jacket 1, thereby making fuller use of the medium heating or cooling effect.

[0036] Reference Figure 1 and Figure 3 Temperature sensors 313 are fixedly embedded in the inner walls of both jackets 1, and displays 314 are fixedly connected to the front ends of both jackets 1.

[0037] Temperature sensor 313 can monitor the temperature of the inner walls of the two jackets 1 and display the temperature on display 314, thereby controlling the input and output of the medium and adjusting the temperature of the waterproof and heat-insulating coating.

[0038] Reference Figure 1 Both jackets 1 are fixedly connected to the right end of an injection pipe 315, and an injection valve 316 is fixedly connected to the outside of the injection pipe 315.

[0039] By opening the injection valve 316, the temperature-controlled medium can be injected into the corresponding jacket 1 through the corresponding injection pipe 315.

[0040] Reference Figure 1 , Figure 4 and Figure 5 The right end of the coil 303 is fixedly connected to the discharge pipe 317. The discharge pipe 317 passes through the preheating sleeve 302 and is fixedly connected to the preheating sleeve 302. The discharge valve 318 is fixedly connected to the outside of the discharge pipe 317.

[0041] By opening the discharge valve 2 318, the waste liquid that has been used twice in the coil 303 can be finally discharged from the discharge pipe 2 317.

[0042] Reference Figure 1 , Figure 4 and Figure 5 The lower end of the raw material preheating cylinder 301 is fixedly connected to the discharge pipe 319, which passes through the sealing cover 304 and is fixedly connected to the sealing cover 304. The discharge solenoid valve 320 is fixedly connected to the outside of the discharge pipe 319. The front end of the raw material preheating cylinder 301 is fixedly connected to the controller 321, which is electrically connected to the discharge solenoid valve 320.

[0043] The controller 321 controls the opening and closing of the discharge solenoid valve 320, thereby controlling the opening and closing of the discharge pipe 319. The discharge pipe 319 is not opened during preheating, but is opened after a period of preheating.

[0044] Reference Figure 1 and Figure 2 The fixing component 5 includes a fixing ring 501, which is fixedly connected to the outside of the coating preparation vessel 2. Multiple fixing pieces 502 are fixedly connected to the upper end of the upper jacket 1. The multiple fixing pieces 502 are detachably connected to the outside of the fixing ring 501 by locking screws 503. The locking screws 503 are threadedly connected to the fixing ring 501 and the fixing pieces 502.

[0045] Reference Figure 1 and Figure 2 Both jackets 1 are fixedly connected to flange 2 504 on the outside. The two flanges 2 504 are detachably connected by locking bolt 2 505. The locking bolt 2 505 is threadedly connected to flange 2 504.

[0046] By setting the fixing component 5, fixing ring 501, fixing plate 502 and locking screw 503, the installation and disassembly between the upper jacket 1 and the paint preparation vessel 2 can be facilitated. The setting of flange 2 504 and locking bolt 2 505 can facilitate the installation and disassembly between the upper and lower jackets 1.

[0047] Reference Figure 1 , Figure 2 and Figure 6 The stirring assembly 6 includes a motor 601, which is fixedly connected to the upper end of the sealing cover 304. The output end of the motor 601 is fixedly connected to a stirring shaft 602, which passes through the sealing cover 304 and is rotatably connected to the sealing cover 304. A stirring paddle 603 is fixedly connected to the outside of the stirring shaft 602. The lower end of the coating preparation vessel 2 is fixedly connected to a discharge pipe 604, and a discharge valve 605 is fixedly connected to the outside of the discharge pipe 604.

[0048] The motor 601 drives the stirring shaft 602 and the stirring paddle 603 to rotate, thereby fully mixing the raw materials of the waterproof and heat-insulating coating. Opening the discharge valve 605 allows the mixed coating to be discharged from the discharge pipe 604.

[0049] Working principle: The setting of the fixing ring 501, fixing plate 502 and locking screw 503 can facilitate the installation and disassembly between the upper jacket 1 and the paint preparation vessel 2. The setting of the flange 2 504 and locking bolt 2 505 can facilitate the installation and disassembly between the upper and lower jackets 1.

[0050] Connect the injection pipe 315 to an external power device, such as a pump body, and open the injection valve 316. The temperature-controlled medium can be injected into the corresponding jacket 1 through the corresponding injection pipe 315. It can be a heating medium, such as hot water, hot oil, steam, etc., or a cooling medium, such as cooling water, cooling oil, etc.

[0051] Temperature sensor 313 can monitor the temperature of the inner walls of the two jackets 1 and display the temperature on display 314, thereby controlling the input and output of the medium and adjusting the temperature of the waterproof and heat-insulating coating. The upper and lower jackets 1 have independent temperature control functions, so that segmented heating or cooling can be selected according to the different properties of the coating. Multiple inclined guide plates have a certain angle between them and the inner wall of the jacket 1, which can guide the medium. In addition, the guide plates, together with multiple protrusions 402, can prolong the time that the medium stays in the jacket 1, so as to make fuller use of the heating or cooling effect of the medium.

[0052] After the waterproof and heat-insulating coating inside the coating preparation vessel 2 is heated in stages by a heating medium, such as hot water or steam, entering the two jackets 1, the discharge valve 309 is opened and the waste liquid of the hot water or other medium is discharged from the discharge pipe 308. The transfer pump 305, together with the input pipe 306 and the connecting pipe 310, draws the waste liquid to the output pipe 307 and finally enters the coil 303. After the waste liquid with residual heat enters the coil 303, it will preheat the raw materials inside the raw material preheating cylinder 301, thereby preheating the coating raw materials, improving the heating efficiency of the coating, fully recovering and utilizing the residual heat, and preventing the waste of heat energy.

[0053] The controller 321 controls the opening and closing of the discharge solenoid valve 320, thereby controlling the opening and closing of the discharge pipe 319. During preheating, the discharge pipe 319 is not opened. After preheating for a period of time and waiting for the previous batch of paint to be discharged from the paint preparation vessel 2, the discharge pipe 319 is opened to discharge the preheated raw material into the paint preparation vessel 2 for stirring. Then, the discharge valve 318 is opened to finally discharge the waste liquid that has played a secondary role in the coil 303 from the discharge pipe 317.

[0054] The motor 601 drives the stirring shaft 602 and the stirring paddle 603 to rotate, thereby fully mixing the raw materials of the waterproof and heat-insulating coating. Opening the discharge valve 605 allows the mixed coating to be discharged from the discharge pipe 604.

[0055] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.

Claims

1. A temperature control device for preparing waterproof and heat-insulating coatings, characterized in that: It includes two jackets (1); the two jackets (1) are installed outside the paint preparation vessel (2), the two jackets (1) are connected to the outside of the two jackets (1) by a waste heat recovery assembly (3), the two jackets (1) are connected to the inside of the two jackets (1) by a flow guiding assembly (4), the two jackets (1) are connected to the outside of a fixing assembly (5), and the paint preparation vessel (2) is connected to the inside of a stirring assembly (6); The waste heat recovery assembly (3) includes a raw material preheating cylinder (301), a preheating sleeve (302) connected to the outside of the raw material preheating cylinder (301), a coil (303) fixedly connected inside the preheating sleeve (302), a sealing cap (304) threadedly connected to the upper end of the coating preparation kettle (2), the raw material preheating cylinder (301) fixedly connected to the upper end of the sealing cap (304), a conveying pump (305) fixedly connected to the upper end of the sealing cap (304), an input pipe (306) fixedly connected to the input end of the conveying pump (305), and an output pipe (307) fixedly connected to the output end of the conveying pump (305). The output pipe (307) is connected to... The coil (303) is fixedly connected, the output pipe (307) passes through the preheating sleeve (302) and is fixedly connected to the preheating sleeve (302), the left ends of the two jackets (1) are fixedly connected to the discharge pipe (308), the outside of the discharge pipe (308) is fixedly connected to the discharge valve (309), the left end of the discharge pipe (308) is fixedly connected to the connecting pipe (310), the outside of the connecting pipe (310) and the input pipe (306) are fixedly connected to the flange (311), the two flanges (311) are detachably connected by the locking bolt (312), and the locking bolt (312) is threadedly connected to the flange (311); The flow guiding assembly (4) includes multiple inclined flow guiding plates (401), which are fixedly connected inside the two jackets (1). The multiple inclined flow guiding plates (401) are arranged at equal intervals. Multiple protrusions (402) are fixedly connected to the outside of the inclined flow guiding plates (401), and the multiple protrusions (402) are arranged at equal intervals.

2. The temperature control device for preparing waterproof and heat-insulating coatings according to claim 1, characterized in that: Temperature sensors (313) are fixedly fitted into the inner walls of both jackets (1), and displays (314) are fixedly connected to the front ends of both jackets (1).

3. The temperature control device for preparing waterproof and heat-insulating coatings according to claim 1, characterized in that: Both of the jackets (1) are fixedly connected to an injection pipe (315) at their right ends, and an injection valve (316) is fixedly connected to the outside of the injection pipe (315).

4. The temperature control device for preparing waterproof and heat-insulating coatings according to claim 1, characterized in that: The right end of the coil (303) is fixedly connected to a discharge pipe two (317), the discharge pipe two (317) passes through the preheating sleeve (302) and is fixedly connected to the preheating sleeve (302), and a discharge valve two (318) is fixedly connected to the outside of the discharge pipe two (317).

5. The temperature control device for preparing waterproof and heat-insulating coatings according to claim 1, characterized in that: The lower end of the raw material preheating cylinder (301) is fixedly connected to a discharge pipe (319), the discharge pipe (319) passes through the sealing cover (304) and is fixedly connected to the sealing cover (304), the discharge pipe (319) is fixedly connected to a discharge solenoid valve (320), the front end of the raw material preheating cylinder (301) is fixedly connected to a controller (321), and the controller (321) is electrically connected to the discharge solenoid valve (320).

6. The temperature control device for preparing waterproof and heat-insulating coatings according to claim 1, characterized in that: The fixing component (5) includes a fixing ring (501), which is fixedly connected to the outside of the coating preparation vessel (2). The upper end of the upper jacket (1) is fixedly connected to a plurality of fixing pieces (502). The plurality of fixing pieces (502) are detachably connected to the outside of the fixing ring (501) by locking screws (503). The locking screws (503) are threadedly connected to the fixing ring (501) and the fixing pieces (502).

7. The temperature control device for preparing waterproof and heat-insulating coatings according to claim 1, characterized in that: Both of the jackets (1) are fixedly connected to the outside of flange two (504), and the two flange two (504) are detachably connected by locking bolt two (505), and the locking bolt two (505) is threadedly connected to flange two (504).

8. The temperature control device for preparing waterproof and heat-insulating coatings according to claim 1, characterized in that: The stirring assembly (6) includes a motor (601), which is fixedly connected to the upper end of the sealing cover (304). The output end of the motor (601) is fixedly connected to a stirring shaft (602), which passes through the sealing cover (304) and is rotatably connected to the sealing cover (304). A stirring paddle (603) is fixedly connected to the outside of the stirring shaft (602). The lower end of the coating preparation vessel (2) is fixedly connected to a discharge pipe (604), and a discharge valve (605) is fixedly connected to the outside of the discharge pipe (604).

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