Water-based composite adhesive drying equipment

Abstract

The water-based composite adhesive drying equipment comprises a machine box, a fresh air opening, an air supply opening, an air return opening and an air exhaust opening, the fresh air opening, the air supply opening, the air return opening and the air exhaust opening are formed in the machine box, a fresh air channel is formed in the machine box and located between the fresh air opening and the air supply opening, and an air exhaust channel is formed in the machine box and located between the air return opening and the air exhaust opening. And the case is a heat exchanger for exchanging heat between the fresh air channel and the exhaust channel. The heat exchanger is used for recycling exhaust heat, heat loss can be reduced, the evaporator, the compressor and the condenser are used for further recycling heat in fresh air and exhaust air to heat the fresh air, energy consumption needed for heating by adopting an electric heater subsequently is reduced, and the purposes of energy conservation, emission reduction and environmental protection are achieved.

Description

Technical Field

[0001] This application relates to the field of printing drying technology, and more particularly to a water-based composite adhesive drying device. Background Technology

[0002] Currently, water-based laminating adhesives are used in the printing and electronic film bonding industries to laminate or bond products. These adhesives are environmentally friendly, using natural or synthetic polymers as binders and water as a solvent or dispersant, replacing toxic organic solvents that pollute the environment. To ensure effective drying of water-based laminating adhesives, the moisture in the adhesive needs to evaporate as much as possible during lamination. Therefore, sufficient drying airflow is required to quickly remove the hot and humid air and ensure the adhesive surface remains dry. However, existing drying equipment consumes a large amount of energy to heat and dry the air, resulting in high processing costs. Utility Model Content

[0003] The purpose of this application is to provide a water-based composite adhesive drying device that recovers and reuses heat from exhaust air through heat exchange, so as to achieve the goal of energy conservation and emission reduction.

[0004] To achieve the above objectives, this application provides the following technical solution:

[0005] A water-based composite adhesive drying device includes a chassis and a fresh air inlet, a supply air inlet, a return air inlet and an exhaust air inlet disposed on the chassis. A fresh air duct is provided inside the chassis between the fresh air inlet and the supply air inlet, and an exhaust air duct is provided inside the chassis between the return air inlet and the exhaust air inlet. A heat exchanger is provided in the chassis for heat exchange between the fresh air duct and the exhaust air duct.

[0006] Further features: A dehumidifying evaporator is installed in the fresh air duct between the fresh air inlet and the heat exchanger.

[0007] Further features: A dehumidifying condenser is installed in the fresh air duct between the heat exchanger and the air outlet.

[0008] Further configuration: A dehumidifying compressor is provided between the dehumidifying evaporator and the dehumidifying condenser. The dehumidifying compressor is used to compress the refrigerant after it has absorbed heat in the dehumidifying evaporator into a high-temperature and high-pressure gaseous state and then introduce it into the dehumidifying condenser. The refrigerant in the dehumidifying condenser releases heat and cools down before being introduced into the dehumidifying evaporator. The dehumidifying evaporator, the dehumidifying compressor, and the dehumidifying condenser together constitute the first circulation loop of the refrigerant.

[0009] Further configuration: The exhaust duct is located between the heat exchanger and the exhaust port and is equipped with a heat pump evaporator.

[0010] Further configuration: The fresh air duct is located between the dehumidifying condenser and the air outlet and is equipped with a heat pump condenser. A heat pump compressor is located between the heat pump evaporator and the heat pump condenser. The heat pump compressor is used to compress the refrigerant after it has absorbed heat through the heat pump evaporator into a high-temperature and high-pressure gaseous state and then introduce it into the heat pump condenser. The refrigerant in the heat pump condenser releases heat and cools down before being introduced into the heat pump evaporator. The heat pump evaporator, the heat pump compressor, and the heat pump condenser together constitute a second circulation loop for the refrigerant.

[0011] Further configuration: An electric heater is provided between the heat pump condenser and the air outlet.

[0012] Further configuration: Both the dehumidifying condenser and the heat pump condenser are connected to a cold water pipe for draining condensate.

[0013] Further configuration: The chassis is equipped with an exhaust fan at the exhaust vent.

[0014] Further configuration: The bottom of the chassis is provided with corner brackets for supporting the chassis so that its bottom is off the ground.

[0015] Compared with existing technologies, the solution in this application has the following advantages:

[0016] 1. In the water-based composite adhesive drying equipment involved in this application, the heat exchanger is used to recover and reuse the heat of the exhaust air, which can reduce heat loss. The evaporator, compressor and condenser are used to further recover the heat in the fresh air and exhaust air to heat the fresh air, which reduces the energy consumption required for subsequent heating with electric heaters, and achieves the purpose of energy saving, emission reduction and environmental protection.

[0017] 2. In the water-based composite adhesive drying equipment involved in this application, after the fresh air enters the fresh air duct, it will first be dehumidified by a dehumidifying evaporator to ensure that the fresh air entering the drying box is dry, so as to improve the drying efficiency of the product.

[0018] Additional aspects and advantages of this application will be set forth in part in the description which follows, and will become apparent from the description or may be learned by practice of this application. Attached Figure Description

[0019] The above and / or additional aspects and advantages of this application will become apparent and readily understood from the following description of the embodiments taken in conjunction with the accompanying drawings, wherein:

[0020] Figure 1 This is a schematic diagram of the structure of one embodiment of the water-based composite adhesive drying equipment of this application;

[0021] Figure 2 This is a schematic diagram of the internal structure of an embodiment of the water-based composite adhesive drying equipment of this application;

[0022] Figure 3 This is a schematic diagram of the structure located on the return air inlet side in one embodiment of the water-based composite adhesive drying equipment of this application;

[0023] Figure 4 This is a structural schematic diagram illustrating the structure of the condenser and compressor in one embodiment of the water-based composite adhesive drying equipment of this application.

[0024] Figure 5 This is a schematic diagram of the structure located on the fresh air inlet side in one embodiment of the water-based composite adhesive drying equipment of this application;

[0025] Figure 6 This is a flowchart of the water-based composite adhesive drying equipment of this application.

[0026] In the diagram, 1. Chassis; 11. Fresh air inlet; 12. Supply air outlet; 13. Return air outlet; 14. Exhaust air outlet; 141. Exhaust fan; 15. Drain pipe; 16. Corner bracket; 2. Heat exchanger; 3. Dehumidifying evaporator; 4. Dehumidifying condenser; 5. Heat pump condenser; 6. Electric heater; 7. Dehumidifying compressor; 8. Heat pump evaporator; 9. Heat pump compressor. Detailed Implementation

[0027] The embodiments of this application 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 application, and should not be construed as limiting this application.

[0028] Those skilled in the art will understand that, unless specifically stated otherwise, the terms "described" and "the" as used herein may also include plural forms. It should be further understood that the term "comprising" as used in the specification of this application means the presence of the described features, parts, and / or components, but does not exclude implementation as other features, parts, components, and / or combinations thereof supported by the art. The term "and / or" as used herein refers to at least one of the items defined by the term; for example, "A and / or B" can be implemented as "A," or as "B," or as "A and B."

[0029] In the description of this application, the terms "center," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate directions or positional relationships based on the exemplary directions or positional relationships shown in the accompanying drawings. They are used to facilitate the description or simplification of the embodiments of this application and are not intended to indicate or imply that the device or component 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 application.

[0030] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, unless otherwise stated, "a plurality of" means two or more.

[0031] In the description of this application, it should be noted that, unless otherwise expressly 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 direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0032] To make the objectives, technical solutions, and advantages of this application clearer, the embodiments of this application will be described in further detail below with reference to the accompanying drawings.

[0033] This application discloses a water-based composite adhesive drying device; please refer to [link / reference]. Figures 1 to 6 It includes a chassis 1 and a fresh air inlet, a supply air inlet 12, a return air inlet 13 and an exhaust air inlet 14 provided on the chassis 1. The chassis 1 has a fresh air duct between the fresh air inlet and the supply air inlet 12, and an exhaust air duct between the return air inlet 13 and the exhaust air inlet 14. The supply air inlet 12 is connected to the fresh air inlet 11 of the oven, and the chassis 1 has a supply air fan at the supply air inlet 12 to deliver the fresh air entering the fresh air duct through the fresh air inlet to the oven to dry products such as printed composites and electronic film lamination. The exhaust air after drying can be discharged from the oven through the oven outlet. The oven outlet is connected to the return air inlet 13 of the chassis 1. The chassis 1 has an exhaust fan 141 at the exhaust air inlet 14 so that the exhaust air discharged from the oven can pass through the exhaust air duct and then be discharged from the exhaust air inlet 14. In addition, the chassis 1 is equipped with a heat exchanger 2 between the fresh air duct and the exhaust air duct for heat exchange. That is, the heat in the exhaust air is recovered by the heat exchanger 2 to heat the fresh air for reuse, thereby reducing energy loss and achieving the purpose of energy saving and emission reduction.

[0034] This application incorporates a dehumidifying evaporator 3 located between the fresh air inlet and the heat exchanger 2 in the fresh air duct. This allows fresh air entering the duct from the inlet to first pass through the dehumidifying evaporator 3 for cooling and condensation, thus achieving dehumidification through gas-liquid separation. Simultaneously, a drain pipe 15 is connected to the bottom of the dehumidifying evaporator 3, allowing condensate to be discharged outside the casing 1, ensuring the dryness of the fresh air. The dried fresh air then enters the heat exchanger 2, where it absorbs heat from the exhaust air for reheating, achieving heat recovery and reuse.

[0035] Along the direction of fresh air delivery, a dehumidifying condenser 4 is installed between the heat exchanger 2 and the air outlet 12 in the fresh air duct. The dehumidifying condenser 4 heats the fresh air to achieve the effect of heating and drying it. At the same time, a dehumidifying compressor 7 is installed between the dehumidifying evaporator 3 and the dehumidifying condenser 4. The dehumidifying compressor 7 is used to compress the refrigerant after it has absorbed heat from the dehumidifying evaporator 3 into a high-temperature and high-pressure gaseous state. The refrigerant in the dehumidifying evaporator 3 first absorbs heat from the fresh air to condense and dehumidify it. After absorbing heat, the refrigerant enters the dehumidifying compressor 7, which compresses it into a high-temperature, high-pressure gaseous state before passing it into the dehumidifying condenser 4. The refrigerant in the dehumidifying condenser 4 releases heat to heat the fresh air. After releasing heat and cooling down, the refrigerant liquefies to form a liquid refrigerant or a gas-liquid coexisting state. The refrigerant returns to the dehumidifying evaporator 3 to await the next heat absorption and release cycle. Thus, the dehumidifying evaporator 3, the dehumidifying compressor 7, and the dehumidifying condenser 4 constitute the first circulation loop of the refrigerant. The circulation of the refrigerant in the first circulation loop can effectively transfer heat, saving energy and reducing consumption.

[0036] In addition, a heat pump evaporator 8 is installed in the exhaust duct between the heat exchanger 2 and the exhaust outlet 14, and a heat pump condenser 5 is installed in the fresh air duct between the dehumidifying condenser 4 and the air supply outlet 12. A heat pump compressor 9 is installed between the heat pump evaporator 8 and the heat pump condenser 5. The heat pump evaporator 8, the heat pump compressor 9, and the heat pump condenser 5 form a second refrigerant circulation loop, which further recovers and reuses the heat in the exhaust air. Specifically, the heat pump evaporator 8 further reduces the temperature of the exhaust air after passing through the heat exchanger 2. Since the exhaust air will carry away the moisture from the dried product after passing through the oven, the water vapor in the exhaust air will be cooled in the heat pump evaporator 8 and further liquefied into water, which is then discharged to the outside of the casing 1 through the drain pipe 15 connected to the heat pump evaporator 8. Meanwhile, the refrigerant located in the heat pump evaporator 8 absorbs heat and enters the heat pump compressor 9 for further compression into a high-temperature and high-pressure gas state. Under high temperature and high pressure, the refrigerant gas enters the heat pump condenser 5 to further heat the fresh air, thereby further recovering and reusing the heat in the exhaust air through refrigerant circulation.

[0037] To ensure the temperature of the fresh air supplied to the oven, an electric heater 6 is installed between the heat pump condenser 5 and the air outlet 12. The electric heater 6 heats the fresh air to the set temperature. Since the fresh air recovers heat through the heat exchanger 2, dehumidifying condenser 4 and heat pump condenser 5 before being heated by the electric heater 6, the first and second circulation loops of the refrigerant can make full use of the energy recovered by the evaporator condensation to further heat the fresh air through the heat absorption and release cycle of the refrigerant. This reduces heat loss and also reduces the energy consumption required for the electric heater 6 to heat the fresh air.

[0038] In addition, the bottom of the chassis 1 is provided with a corner bracket 16, which makes the bottom of the chassis 1 away from the ground, thereby facilitating the transport of the water-based composite adhesive drying equipment of this application by forklift. It does not require the removal of any parts on the production line, does not change the drying process and drying control program, and has low risk.

[0039] The water-based composite adhesive drying equipment of this application utilizes a heat exchanger 2 to recover and reuse the heat from the exhaust air, thereby reducing heat loss. It further utilizes an evaporator, compressor, and condenser to recover heat from both the fresh air and exhaust air to heat the fresh air, reducing the energy consumption required for subsequent heating with an electric heater 6, thus achieving energy conservation, emission reduction, and environmental protection. Simultaneously, after entering the fresh air duct, the fresh air is first dehumidified by a dehumidifying evaporator 3 to ensure that the fresh air entering the drying chamber is dry, thereby improving the drying efficiency of the products.

[0040] The above description is only a partial embodiment of this application. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of this application, and these improvements and modifications should also be considered within the scope of protection of this application.

Claims

1. A water-based composite adhesive drying device, characterized in that, Includes a chassis (1) and a fresh air inlet, a supply air outlet (12), a return air outlet (13) and an exhaust air outlet (14) provided on the chassis (1). A fresh air duct is provided in the chassis (1) between the fresh air inlet and the supply air outlet (12). An exhaust air duct is provided in the chassis (1) between the return air outlet (13) and the exhaust air outlet (14). A heat exchanger (2) is provided in the chassis (1) between the fresh air duct and the exhaust air duct.

2. The water-based composite adhesive drying equipment according to claim 1, characterized in that, The fresh air duct is located between the fresh air inlet and the heat exchanger (2) and is equipped with a dehumidifying evaporator (3).

3. The water-based composite adhesive drying equipment according to claim 2, characterized in that, The fresh air duct is located between the heat exchanger (2) and the air outlet (12) and is equipped with a dehumidifying condenser (4).

4. The water-based composite adhesive drying equipment according to claim 3, characterized in that, A dehumidifying compressor (7) is provided between the dehumidifying evaporator (3) and the dehumidifying condenser (4). The dehumidifying compressor (7) is used to compress the refrigerant after it has absorbed heat through the dehumidifying evaporator (3) into a high-temperature and high-pressure gas state and pass it into the dehumidifying condenser (4). The refrigerant in the dehumidifying condenser (4) releases heat and cools down before being passed into the dehumidifying evaporator (3). The dehumidifying evaporator (3), the dehumidifying compressor (7), and the dehumidifying condenser (4) together constitute the first circulation loop of the refrigerant.

5. The water-based composite adhesive drying equipment according to claim 4, characterized in that, The exhaust duct is located between the heat exchanger (2) and the exhaust port (14) and is equipped with a heat pump evaporator (8).

6. The water-based composite adhesive drying equipment according to claim 5, characterized in that, The fresh air duct is located between the dehumidifying condenser (4) and the air outlet (12) and is also equipped with a heat pump condenser (5). A heat pump compressor (9) is provided between the heat pump evaporator (8) and the heat pump condenser (5). The heat pump compressor (9) is used to compress the refrigerant after it has absorbed heat through the heat pump evaporator (8) into a high-temperature and high-pressure gas state and pass it into the heat pump condenser (5). The refrigerant in the heat pump condenser (5) releases heat and cools down and is then passed into the heat pump evaporator (8). The heat pump evaporator (8), the heat pump compressor (9) and the heat pump condenser (5) together constitute the second circulation loop of the refrigerant.

7. The water-based composite adhesive drying equipment according to claim 6, characterized in that, An electric heater (6) is provided between the heat pump condenser (5) and the air outlet (12).

8. The water-based composite adhesive drying equipment according to claim 6, characterized in that, Both the dehumidifying condenser (4) and the heat pump condenser (5) are connected to a cold water pipe for draining condensate.

9. The water-based composite adhesive drying equipment according to claim 1, characterized in that, The chassis (1) is equipped with an exhaust fan (141) at the exhaust port (14).

10. The water-based composite adhesive drying equipment according to claim 1, characterized in that, The bottom of the chassis (1) is provided with corner brackets (16) for supporting the chassis (1) so that its bottom is away from the ground.

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