Water paint drying and dehumidifying equipment

Abstract

The utility model discloses a water paint drying and dehumidifying device which comprises a drying chamber, a heat exchanger and an assembly line which are installed in the drying chamber, and a water heater installed outside the drying chamber, a water outlet of the water heater is connected with a hot water tank, and a water inlet of the water heater is connected with a cold water tank through a first water pump. The hot water tank is connected with the water inlet end of the heat exchanger through the second water pump. The water outlet end of the heat exchanger is connected with the cold water tank. A dehumidifying device and an air supplementing device are mounted at the top of the drying chamber, the dehumidifying device comprises a dehumidifying fan and a dehumidifying air pipe connected with the dehumidifying fan, and the air inlet end of the dehumidifying air pipe is communicated with the interior of the drying chamber; the air supplementing device comprises an air supplementing machine and an air supplementing pipe connected with the air supplementing machine, the air outlet end of the air supplementing pipe communicates with the interior of the drying chamber, and air filters are installed at the air inlet end of the air supplementing machine and the air outlet end of the air supplementing pipe; the device is high in automation degree, and production efficiency and product quality can be improved.

Description

Technical Field

[0001] This utility model relates to the field of drying and dehumidification technology, specifically to a water-based paint drying and dehumidification device. Background Technology

[0002] Water-based paint is a type of coating that uses water as a solvent or dispersion medium. Compared to traditional oil-based paints, it is more environmentally friendly, less toxic, and less flammable. However, water-based paints have a longer drying time. The drying speed of water-based paints is relatively slow, especially in high-humidity environments, where it may take even longer to dry completely.

[0003] Traditional methods for drying wood panels coated with water-based paint include: 1. Natural drying: Place the coated wood panels in a well-ventilated area to prevent moisture from evaporating due to poor air circulation. Ensure the panels are placed horizontally to prevent paint dripping or unevenness due to gravity. Typically, the first coat requires 4 to 6 hours to dry, and complete drying may take up to 24 hours, resulting in a long drying time and low efficiency. 2. Manual drying: Some methods use hot air guns to locally heat the wood panels to accelerate moisture evaporation. Others use infrared lamps, which provide uniform heat distribution and are suitable for drying large areas of wood panels. However, this method has low automation and efficiency. Oven drying is also used, which is faster than natural and manual drying and can dry more panels at once, but it cannot meet the needs of large-scale assembly line operations.

[0004] In summary, the above-mentioned drying methods have shortcomings such as low automation, low production efficiency, low product quality, and cumbersome operation, and are not suitable for large-scale industrial production and processing. Utility Model Content

[0005] In order to overcome at least one of the technical problems existing in the prior art, this utility model provides a water-based paint drying and dehumidification device, which has a high degree of automation and can improve production efficiency and product quality.

[0006] A water-based paint drying and dehumidification device includes a drying chamber, a heat exchanger and a conveyor line for conveying boards installed inside the drying chamber, and a hot water boiler installed outside the drying chamber. The outlet of the hot water boiler is connected to a hot water tank, and the inlet of the hot water boiler is connected to a cold water tank via a first water pump. The hot water tank is connected to the inlet of the heat exchanger via a second water pump, and the outlet of the heat exchanger is connected to the cold water tank. A dehumidification device and a makeup air device are installed on the top of the drying chamber. The dehumidification device includes a dehumidification fan and a dehumidification duct connected to the dehumidification fan. The inlet of the dehumidification duct is connected to the interior of the drying chamber. The makeup air device includes a makeup air fan and a makeup air duct connected to the makeup air fan. The outlet of the makeup air duct is connected to the interior of the drying chamber. Air filters are installed at both the inlet of the makeup air fan and the outlet of the makeup air duct.

[0007] In some embodiments, the water outlet is located at the upper end of the hot water heater, and the water inlet is located at the lower end of the hot water heater; both the hot water tank and the cold water tank are equipped with a water level gauge, a drain outlet, a water inlet float, and multiple electrode positions.

[0008] In some embodiments, the drying chamber is provided with a preheating zone, a front leveling zone, a primer zone, a cooling zone, a topcoat zone, and a rear leveling zone; it also includes a loading zone and a unloading zone, and the assembly line connects the loading zone, preheating zone, front leveling zone, primer zone, cooling zone, topcoat zone, rear leveling zone, and unloading zone.

[0009] In some embodiments, a spray booth is provided in the primer zone and the topcoat zone; multiple heat exchangers are installed in the preheating zone, the pre-leveling zone, the primer zone, the topcoat zone, and the post-leveling zone.

[0010] Additional aspects and advantages of this invention will continue to be set forth in the description which follows, and in part will be obvious from the description or may be learned by practice of this invention. Attached Figure Description

[0011] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0012] Figure 1 This is a schematic diagram of the front cross-sectional structure of this application;

[0013] Figure 2 yes Figure 1 Schematic diagram of the structure of the heat exchanger and production line;

[0014] Figure 3 yes Figure 1 Enlarged view of point A in the middle;

[0015] Figure 4 This is a side view sectional structural diagram of this application;

[0016] Figure 5 yes Figure 4 Enlarged view of point B in the middle.

[0017] Figure label:

[0018] Drying chamber 1, preheating zone 1a, pre-leveling zone 1b, primer zone 1c, cooling zone

[0019] 1d, Topcoat area 1e, Post-leveling area 1f, Loading area 1g, Unloading area 1h, Spray painting station 1ce;

[0020] 2. Heat exchanger; 3. Production line; 4. Hot water heater; 4. Outlet 400; Inlet 401; 5. Hot water tank; 5. Water level gauge; 500; Drain 501; Inlet float 502; Electrode 503;

[0021] First water pump 6, cold water tank 7, second water pump 8;

[0022] Dehumidification device 9, dehumidification fan 900, dehumidification duct 901;

[0023] Air supply device 10, air supply fan 100, air supply pipe 101, air filter 102; sheet material 11. Detailed Implementation

[0024] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0025] In the description of this utility model, it should be understood that the directional descriptions, such as the terms "up," "down," "front," "back," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0026] In the description of this utility model, "several" means one or more, "multiple" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. If "first" or "second" is used in the description, it is only for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0027] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0028] Reference Figures 1-5A water-based paint drying and dehumidification device includes a drying chamber 1, within which multiple heat exchangers 2 and a conveyor line 3 for transporting sheet materials 11 are installed. The conveyor line 3 is also called a transport line or production line. The basic working principle of the heat exchangers 2 is to transfer heat using the temperature difference between two fluids. Typically, one fluid (called the hot fluid) flows through pipes or plates, while the other fluid (called the cold fluid) flows outside these pipes or plates. The heat of the hot fluid is transferred to the cold fluid through a heat-conducting material, thereby achieving heat exchange. It also includes a hot water heater 4 installed outside the drying chamber 1. The outlet 400 of the hot water heater 4 is connected to the hot water tank 5. The inlet 401 of the hot water heater 4 is connected to the cold water tank 7 through the first water pump 6. The hot water tank 5 is connected to the inlet of the heat exchanger 2 through the second water pump 8. The outlet of the heat exchanger 2 is connected to the cold water tank 7. A dehumidification device 9 and a make-up air device 10 are installed on the top of the drying chamber 1. The dehumidification device 9 includes a dehumidification fan 900 and a dehumidification duct 901 connected to the dehumidification fan 900. The inlet of the dehumidification duct 901 is connected to the interior of the drying chamber 1. The make-up air device 10 includes a make-up air fan 100 and a make-up air duct 101 connected to the make-up air fan 100. The outlet of the make-up air duct 101 is connected to the interior of the drying chamber 1. An air filter 102 is installed at the inlet of the make-up air fan 100 and the outlet of the make-up air duct 101. For example, filters such as mesh filters, medium-efficiency filters, and high-efficiency filters improve air quality by removing particulate matter, dust, microorganisms, and other pollutants from the air, thus ensuring the quality of paint spraying on wood.

[0029] During operation, the sheet material 11 moves within the drying chamber 1 via the assembly line 3. A hot water heater 4 heats water, which is then piped to a hot water tank 5. The hot water in the tank 5 is then pumped by a second water pump 8 to the heat exchangers 2 located within the drying chamber 1. After completing its work, the hot water flows from the outlet of the heat exchangers 2 into a cold water tank 7. The water in the cold water tank 7 is then pumped by a first water pump 6 back into the hot water heater 4 for further heating. The heat emitted by the heat exchangers 2 heats the drying chamber 1 and the sheet material on the assembly line 3, causing moisture to evaporate from the sheet material. The main function of the dehumidification device 9 is to remove moisture from the air within the drying chamber 1, reducing humidity. Low relative humidity accelerates the evaporation of moisture from the board surface. By effectively removing moisture, the time for internal moisture to migrate to the surface of the wood is reduced, thereby improving drying speed and efficiency. For example, when the humidity in drying chamber 1 reaches 60%, dehumidification can be achieved through dehumidification device 9, and dehumidification can be stopped when the humidity in the chamber drops to 50%. Air supply device 10 can replenish fresh air into drying chamber 1 to maintain airflow and circulation. Water-based paints take a relatively long time to dry naturally because moisture needs to evaporate slowly. Heat curing, on the other hand, can quickly evaporate moisture through baking, allowing the paint to dry faster and improving the hardness and abrasion resistance of the coating. Baking also prevents problems such as poor adhesion of water-based paints after use. This application has a high degree of automation and can improve production efficiency and product quality.

[0030] In some embodiments, the outlet 400 is located at the upper end of the hot water heater 4, and the inlet 401 is located at the lower end of the hot water heater 4. Due to the density difference between hot and cold water, the water in the tank will naturally separate into layers, with hot water on top and cold water on the bottom. Positioning the outlet 400 at the upper end ensures that only hot water flows out; positioning the inlet 401 at the lower end ensures that only cold water enters, preventing mixing of hot and cold water. Both the hot water tank 5 and the cold water tank 7 are equipped with a water level gauge 500, a drain outlet 501, an inlet float 502, and three electrode positions 503. The water level gauge 500 is used to monitor the water level in the tank in real time, ensuring that the system's normal operation is not affected by excessively low or high water levels. The drain outlet 501 is used to periodically drain water. The bottom of the tank is sealed to remove sediment and impurities, keeping the water clean. The inlet float 502 is an automatic control device; when the water level in the tank drops to a certain level, the float triggers the inlet valve to open, replenishing the tank. The electrode 503 controls the water intake and heating process by detecting changes in the water level. When the water level reaches the set high electrode level, the system stops water intake; when the water level drops to the set low electrode level, the system starts water intake. The electrode can also be used to detect whether the water level in the tank is normal; if the water level is abnormal, the system will issue an alarm or stop working to prevent equipment damage. The hot water tank 5 and the cold water tank 7 are connected by a water pipe to ensure water level balance in the system and to ensure a reasonable distribution of hot and cold water. This connecting pipe keeps the water levels in the hot water tank 5 and the cold water tank 7 consistent, preventing one tank from becoming too high or too low.

[0031] In some embodiments, the drying chamber 1 is provided with a preheating zone 1a, a pre-leveling zone 1b, a primer zone 1c, a cooling zone 1d, a topcoat zone 1e, and a post-leveling zone 1f; it also includes a loading zone 1g and a unloading zone 1h, and the production line 3 connects the loading zone 1g, preheating zone 1a, pre-leveling zone 1b, primer zone 1c, cooling zone 1d, topcoat zone 1e, post-leveling zone 1f, and unloading zone 1h. The loading zone 1g is used to place the sheet metal onto the production line 3, and the unloading zone 1h is used to remove the sheet metal from the production line 3; the preheating zone 1a is used to heat the workpiece or material to an appropriate temperature to prepare for subsequent processing steps. Preheating can reduce the temperature difference between the workpiece and subsequent high-temperature processing, preventing stress and deformation caused by sudden temperature changes; the leveling zone ensures that the coating or paint applied to the surface of the workpiece is evenly distributed, eliminating defects such as dripping and sagging. By controlling the temperature and time, the coating surface is leveled to form a smooth and flat coating. Primer zone 1c is used to apply a primer layer to the workpiece surface, providing good adhesion for the subsequent topcoat. Topcoat zone 1e is used to apply a high-quality topcoat layer to the workpiece surface, forming the final protective and decorative layer. Cooling zone 1d is used to cool the workpiece or material after high-temperature treatment to room temperature, ensuring its stability and safety. The cooling process helps the coating cure and improves its performance. When the sheet metal moves within these zones, the corresponding processing steps can be completed, improving work efficiency and automation.

[0032] In some embodiments, a spray booth 1ce is provided in the primer zone 1c and the topcoat zone 1e for spraying paint; multiple heat exchangers 2 are installed in the preheating zone 1a, the front leveling zone 1b, the primer zone 1c, the topcoat zone 1e, and the rear leveling zone 1f, so that the above-mentioned areas can be heated for drying the board.

[0033] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments have been described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification. Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the claims and their equivalents.

Claims

1. A water-based paint drying and dehumidification device, comprising a drying chamber, characterized in that: The drying chamber is equipped with a heat exchanger and a conveyor line for transporting sheet metal. It also includes a hot water boiler installed outside the drying chamber. The outlet of the hot water boiler is connected to a hot water tank, and the inlet of the hot water boiler is connected to a cold water tank via a first water pump. The hot water tank is connected to the inlet of the heat exchanger via a second water pump, and the outlet of the heat exchanger is connected to the cold water tank. A dehumidification device and a makeup air device are installed on the top of the drying chamber. The dehumidification device includes a dehumidifying fan and a dehumidifying duct connected to the fan, with the inlet of the duct connected to the interior of the drying chamber. The makeup air device includes a makeup air fan and a makeup air duct connected to it, with the outlet of the duct connected to the interior of the drying chamber. Air filters are installed at both the inlet of the makeup air fan and the outlet of the makeup air duct.

2. The water-based paint drying and dehumidification equipment as described in claim 1, characterized in that: The water outlet is located at the top of the hot water heater, and the water inlet is located at the bottom of the hot water heater; both the hot water tank and the cold water tank are equipped with a water level gauge, a drain outlet, a water inlet float, and multiple electrode positions.

3. The water-based paint drying and dehumidification equipment as described in claim 1 or 2, characterized in that: in The drying chamber is equipped with a preheating zone, a front leveling zone, a primer zone, a cooling zone, a topcoat zone, and a rear leveling zone; it also includes a loading zone and a unloading zone, and the assembly line connects the loading zone, preheating zone, front leveling zone, primer zone, cooling zone, topcoat zone, rear leveling zone, and unloading zone.

4. The water-based paint drying and dehumidification equipment as described in claim 3, characterized in that: Spray booths are set up in the primer and topcoat areas; multiple heat exchangers are installed in the preheating area, pre-leveling area, primer area, topcoat area, and post-leveling area.

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