Printing drying air duct

Abstract

The utility model discloses a printing drying air duct, which relates to the technical field of printing equipment and comprises an air duct, a sensible heat exchanger, a condenser and an evaporator are respectively arranged in the air duct, an air return pipe and an air exhaust pipe are respectively arranged on the air duct, and the air return pipe and the air exhaust pipe are respectively communicated with the sensible heat exchanger and the evaporator. The sensible heat exchanger is respectively connected with a first communicating pipe and a second communicating pipe, and the other end of the first communicating pipe and the other end of the second communicating pipe are respectively communicated with the condenser and the evaporator. Fresh air entering the drying chamber can be purified, dust and other impurities contained in the fresh air are prevented from being attached to the surfaces of printed matters, the quality of the printed matters is guaranteed, shutdown operation is not needed when the filter plate is replaced, drying continuity and drying efficiency can be guaranteed, and the drying efficiency is improved. And the air duct can enhance heat energy recovery and utilization, so that the drying efficiency is improved, the energy consumption can be reduced, and the practicability is high.

Description

Technical Field

[0001] The utility model relates to the technical field of printing equipment, in particular to a printing and drying air duct. Background Technique

[0002] Guardrails are commonly used on municipal roads to separate the driving directions between motor vehicle lanes and play a role in central isolation; or in densely populated areas such as schools and stations, guardrails for motor vehicle lanes and non-motor vehicle lanes are set to ensure the safety of pedestrians and the smooth flow of vehicle traffic; or to enclose green belts, etc.

[0003] After searching, a duct system of a printing dryer with the publication number of CN204020225U. In this system, the high-temperature and humid air coming out of the drying cavity first enters the sensible heat exchanger through the first return air duct, exchanges heat with the fresh air entering the sensible heat exchanger to cool down, and at the same time the fresh air is heated up. Then it passes through the second return air duct to the evaporator for secondary cooling, and the fresh air enters the condenser through the second air inlet duct for secondary heating. Through the setting of the sensible heat exchanger, this system can effectively save the energy consumption during the working process of the condenser and the evaporator. At the same time, the condenser and the evaporator are horizontally arranged, which can make the condenser and the evaporator heat more evenly, thereby further improving the heat exchange and heat recovery efficiency of the system.

[0004] Regarding the above related technologies, the inventor believes that the above device does not set a corresponding filtering structure at the fresh air inlet during use, resulting in dust and other impurities contained in the fresh air being easily introduced into the drying chamber. When drying the printed paper, these dust and other impurities are easily adhered to the paper, affecting the printing effect. Even if a filter plate is added to filter the dust, when replacing the filter plate, it is necessary to stop the machine, which will reduce the overall drying efficiency. For this reason, we propose a printing and drying air duct. Content of the Utility Model

[0005] In view of the problems existing in the above-mentioned duct system of the existing printing dryer, the present utility model is proposed.

[0006] Therefore, the purpose of the present utility model is to provide a printing and drying air duct, which solves the problem that the above device does not set a corresponding filtering structure at the fresh air inlet during use, resulting in dust and other impurities contained in the fresh air being easily introduced into the drying chamber. When drying the printed paper, these dust and other impurities are easily adhered to the paper, affecting the printing effect. Even if a filter plate is added to filter the dust, when replacing the filter plate, it is necessary to stop the machine, which will reduce the overall drying efficiency.

[0007] In order to achieve the above purpose, the present utility model provides the following technical solutions:

[0008] A printing drying air duct, comprising an air duct, wherein a sensible heat exchanger, a condenser and an evaporator are respectively arranged inside the air duct, a return air duct and an exhaust air duct are respectively arranged on the air duct, the return air duct and the exhaust air duct are respectively communicated with the sensible heat exchanger and the evaporator, the sensible heat exchanger is respectively connected with a first communication pipe and a second communication pipe, the other ends of the first communication pipe and the second communication pipe are respectively communicated between the condenser and the evaporator, the coils between the condenser and the evaporator are mutually communicated, the air outlet end of the condenser is communicated with the inside of the air duct, a filtering mechanism and a blower are respectively arranged at the air inlet and the air outlet of the air duct, the filtering mechanism comprises a fixed seat and a fixing plate, the fixed seat is fixedly connected to the air duct, a guiding groove is formed on the fixed seat, the fixing plate is slidably connected in the guiding groove, a through hole is formed on the fixed seat, a first mounting hole and a second mounting hole are respectively formed on the fixing plate, the sizes and positions of the first mounting hole, the second mounting hole and the through hole correspond and are consistent, a filter plate is placed in the first mounting hole, which can purify the fresh air entering the drying cavity, so as to ensure the cleanliness of the fresh air, avoid dust adhering to the surface of the printed matter, so as to ensure the quality of the printed matter, and when replacing the filter plate, there is no need to stop the machine for operation, continuous operation can be realized, the drying efficiency can be effectively guaranteed, and at the same time, through the combined use of the sensible heat exchanger, the condenser and the evaporator, the heat energy recovery and utilization can be enhanced, the drying efficiency is improved, and the energy consumption can be reduced, and the practicability is strong.

[0009] Preferably, the condenser and the evaporator are located on the same plane.

[0010] Preferably, a fluororesin coating layer is uniformly coated on the inner wall of the air duct, and a heat preservation sleeve is nested on the outer wall of the air duct.

[0011] Preferably, a temperature and humidity monitor and a controller are respectively arranged on the outer wall of the air duct, and the temperature and humidity monitor is connected to the controller through an electric wire.

[0012] Preferably, a temperature monitor is installed on the inner wall of the air duct, the temperature monitor is connected to the controller through an electric wire, and the temperature monitor is installed between the blower and the condenser.

[0013] Preferably, a limiting groove is formed on the inner wall of the fixed seat, a limiting strip is arranged on the outer wall of the fixing plate, and the fixing plate is in interference fit connection with the limiting groove through the limiting strip.

[0014] Preferably, handles are respectively arranged on the outer walls on both sides of the fixing plate, rubber sleeves are nested on the handles, and the width of the handles is greater than the width of the fixed seat.

[0015] Preferably, a first magnet is arranged on the outer wall of the fixed seat, a second magnet is arranged on the inner wall of the handle, the positions of the first magnet and the second magnet are the same, and the magnetic poles are opposite.

[0016] Preferably, mounting frames are provided on the inner walls of the first mounting hole and the second mounting hole. Third magnets are provided on the outer walls of the mounting frames, and fourth magnets are provided on the outer wall of the filter plate. The positions of the third magnets and the fourth magnets are the same, and their magnetic polarities are opposite.

[0017] In the above technical solution, the technical effects and advantages provided by the present utility model are as follows:

[0018] 1. In the present utility model, by providing a filtering mechanism, the fresh air entering the drying cavity can be purified, so as to ensure the cleanliness of the fresh air, avoid dust adhering to the surface of the printed matter, and thus ensure the quality of the printed matter. Moreover, when replacing the filter plate, the device does not need to stop operating, can achieve continuous operation, and can effectively ensure the drying efficiency.

[0019] 2. In the present utility model, by providing a sensible heat exchanger, a condenser and an evaporator, through their combined use, the recovery and utilization of thermal energy can be enhanced, the drying efficiency can be significantly improved, the drying time of the ink can be shortened, the rapid shaping of the printed surface can be ensured, and the energy consumption can also be reduced. It has strong practicability.

[0020] 3. In the present utility model, by providing a temperature and humidity monitor, a temperature monitor and a controller, through their combined use, the drying temperature can be adjusted according to the ambient temperature and humidity to ensure that the ink is dried under the best conditions. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required in the embodiments. Obviously, the drawings described below are only some embodiments recorded in the present utility model. For those of ordinary skill in the art, other drawings can also be obtained based on these drawings.

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

[0023] Figure 2 It is a schematic diagram of the cross-sectional structure of the air duct of the present utility model;

[0024] Figure 3 It is a schematic diagram of the structure of the filtering mechanism of the present utility model;

[0025] Figure 4 It is a schematic diagram of the structure of the fixed seat of the present utility model;

[0026] Figure 5 It is a schematic diagram of the structure of the fixing plate of the present utility model.

[0027] Explanation of the reference numerals in the drawings:

[0028] 1, air duct; 2, filtering mechanism; 3, fan; 4, return air duct; 5, exhaust duct; 6, temperature and humidity monitor; 7, controller; 8, temperature monitor; 9, sensible heat exchanger; 10, condenser; 11, evaporator; 12, first connecting pipe; 13, second connecting pipe; 14, fixed seat; 15, fixing plate; 16, guiding groove; 17, through hole; 18, limiting groove; 19, first magnet; 20, first mounting hole; 21, second mounting hole; 22, mounting frame; 23, filter plate; 24, limiting strip; 25, handle; 26, third magnet. Detailed implementation manner

[0029] In order to enable those skilled in the art to better understand the technical solution of the present utility model, the present utility model will be further introduced in detail below with reference to the accompanying drawings.

[0030] An embodiment of the present utility model discloses a printing and drying air duct.

[0031] Embodiment 1

[0032] The present utility model provides a printing and drying air duct as shown in Figures 1-5 which includes an air duct 1. Inside the air duct 1, there are respectively arranged a sensible heat exchanger 9, a condenser 10 and an evaporator 11. On the air duct 1, there are respectively arranged a return air duct 4 and an exhaust duct 5. The return air duct 4 and the exhaust duct 5 are respectively communicated with the sensible heat exchanger 9 and the evaporator 11. The sensible heat exchanger 9 is respectively connected with a first connecting pipe 12 and a second connecting pipe 13. The other ends of the first connecting pipe 12 and the second connecting pipe 13 are respectively communicated between the condenser 10 and the evaporator 11. The coils between the condenser 10 and the evaporator 11 are mutually communicated. The air outlet end of the condenser 10 is communicated with the inside of the air duct 1. At the air inlet and air outlet of the air duct 1, there are respectively arranged a filtering mechanism 2 and a fan 3. The filtering mechanism 2 includes a fixed seat 14 and a fixing plate 15. The fixed seat 14 is fixedly connected to the air duct 1. A guiding groove 16 is formed on the fixed seat 14. The fixing plate 15 is slidably connected in the guiding groove 16. A through hole 17 is formed on the fixed seat 14. On the fixing plate 15, there are respectively formed a first mounting hole 20 and a second mounting hole 21. The sizes and positions of the first mounting hole 20, the second mounting hole 21 and the through hole 17 correspond and are consistent. A filter plate 23 is placed in the first mounting hole 20.

[0033] In the printing and drying air duct of the present utility model, the condenser 10 and the evaporator 11 are located on the same plane, which can ensure uniform heating and improve the heat exchange efficiency.

[0034] In the printing and drying air duct of the present utility model, a fluororesin coating layer is uniformly coated on the inner wall of the air duct 1, and a heat preservation sleeve is nested on the outer wall of the air duct 1. The fluororesin coating layer has good heat resistance and low friction, which can reduce the air resistance loss and ensure the smooth circulation of hot air.

[0035] Embodiment 2

[0036] Based on the first embodiment, Figures 1-2 As shown, a printing drying air duct of the utility model has a temperature and humidity monitor 6 and a controller 7 on the outer wall of the air duct 1. The temperature and humidity monitor 6 is connected to the controller 7 through electric wires, and the drying temperature is automatically adjusted according to the ambient temperature and humidity to ensure that the ink is dried under the best conditions.

[0037] The utility model discloses a printing and drying air duct, wherein a temperature monitor 8 is installed on the inner wall of the air duct 1, and the temperature monitor 8 is connected to a controller 7 through an electric wire. The temperature monitor 8 is installed between the fan 3 and the condenser 10, so as to realize real-time temperature monitoring and feedback adjustment, and avoid adverse effects on the printing surface caused by excessively high or low temperature.

[0038] Embodiment 3

[0039] Based on the second embodiment, Figures 1-5 As shown, in a printing and drying air duct of the utility model, a limiting groove 18 is provided on the inner wall of the fixed seat 14, and a limiting strip 24 is provided on the outer wall of the fixed plate 15. The fixed plate 15 is connected to the limiting groove 18 through the limiting strip 24, which can provide a limiting guiding function for the fixed plate 15 and improve the stability of the fixed plate 15 during the movement process.

[0040] In the printing and drying air duct of the utility model, handles 25 are arranged on the outer walls of both sides of the fixing plate 15, rubber sleeves are embedded on the handles 25, and the width of the handles 25 is greater than the width of the fixing seat 14, which can conveniently drive the fixing plate 15 to move.

[0041] The utility model provides a printing drying air duct, a first magnet 19 is provided on the outer wall of a fixing base 14, a second magnet is provided on the inner wall of a handle 25, the first magnet 19 and the second magnet are at the same position and have opposite magnetic properties, so that the position of the fixing plate 15 after movement can be easily fixed to avoid random movement during use, which would affect the use effect.

[0042] The utility model provides a printing and drying air duct, wherein a mounting frame 22 is provided on the inner walls of a first mounting hole 20 and a second mounting hole 21, a third magnet 26 is provided on the outer wall of the mounting frame 22, and a fourth magnet is provided on the outer wall of a filter plate 23. The third magnet 26 and the fourth magnet are located at the same position and have opposite magnetic properties, so that the filter plate 23 can be quickly disassembled and assembled, thereby improving the overall convenience of use.

[0043] During use, the high-temperature and humid air coming out of the drying cavity first enters the sensible heat exchanger 9 through the return air duct 4, and then the fresh air filtered by the filter plate 23 enters the sensible heat exchanger 9. Then, the high-temperature and humid air exchanges heat with the fresh air entering the sensible heat exchanger 9 to cool down, while the fresh air is heated up. Then, it enters the evaporator 11 through the second connecting pipe 13 for secondary cooling, and the fresh air enters the condenser 10 through the first connecting pipe 12 for secondary heating. Through the setting of the sensible heat exchanger 9, the energy consumption in the working process of the condenser 10 and the evaporator 11 can be effectively saved, and the heat exchange and heat recovery efficiency of the whole device can be further improved. As the usage time increases, when the filter plate 23 needs to be replaced or cleaned, for example, at this time, the filter plate 23 in the first mounting hole 20 is located at the air inlet of the air duct 1. When it needs to be replaced or cleaned, first install a new filter plate 23 in the second mounting hole 21, and then drive the fixing plate 15 to move through the handle 25, so that the filter plate 23 in the second mounting hole 21 moves to the air inlet of the air duct 1, and then the old filter plate 23 in the first mounting hole 20 can be removed. Through this method, the replacement of the filter plate 23 can be realized without shutting down the machine, so that the device can realize continuous operation and effectively ensure the drying efficiency.

[0044] Only some exemplary embodiments of the present invention have been described by way of illustration above. Undoubtedly, for those of ordinary skill in the art, without departing from the spirit and scope of the present invention, the described embodiments can be modified in various different ways. Therefore, the above drawings and description are illustrative in nature and should not be construed as limiting the protection scope of the claims of the present invention.

Claims

1. A printing drying air duct, comprising an air duct (1), characterized in that: A sensible heat exchanger (9), a condenser (10) and an evaporator (11) are respectively arranged inside the air duct (1); a return air duct (4) and an exhaust air duct (5) are respectively arranged on the air duct (1); the return air duct (4) and the exhaust air duct (5) are respectively connected to the sensible heat exchanger (9) and the evaporator (11); the sensible heat exchanger (9) is respectively connected to a first connecting pipe (12) and a second connecting pipe (13); the other ends of the first connecting pipe (12) and the second connecting pipe (13) are respectively connected to the condenser (10) and the evaporator (11); the coils between the condenser (10) and the evaporator (11) are connected to each other; the air outlet end of the condenser (10) is connected to the inside of the air duct (1); The air inlet and the air outlet of the air duct (1) are respectively provided with a filter mechanism (2) and a fan (3); the filter mechanism (2) comprises a fixing seat (14) and a fixing plate (15); the fixing seat (14) is fixedly connected to the air duct (1); the fixing seat (14) is provided with a guide groove (16); the fixing plate (15) is slidably connected in the guide groove (16); the fixing seat (14) is provided with a through hole (17); the fixing plate (15) is respectively provided with a first mounting hole (20) and a second mounting hole (21); the first mounting hole (20), the second mounting hole (21) and the through hole (17) have corresponding sizes and positions; a filter plate (23) is placed in the first mounting hole (20).

2. The printing drying air duct according to claim 1, characterized in that: The condenser (10) and the evaporator (11) are located on the same plane.

3. The printing drying air duct according to claim 1, characterized in that: The inner wall of the air duct (1) is evenly coated with a fluororesin coating layer, and the outer wall of the air duct (1) is nested with a heat-insulating sleeve.

4. The printing drying air duct according to claim 1, characterized in that: A temperature and humidity monitor (6) and a controller (7) are respectively provided on the outer wall of the air duct (1), and the temperature and humidity monitor (6) is connected to the controller (7) via an electric wire.

5. The printing drying air duct according to claim 4, characterized in that: A temperature monitor (8) is installed on the inner wall of the air duct (1), and the temperature monitor (8) is connected to the controller (7) via an electric wire. The temperature monitor (8) is installed between the fan (3) and the condenser (10).

6. The printing drying air duct according to claim 1, characterized in that: A limiting groove (18) is provided on the inner wall of the fixing seat (14), a limiting strip (24) is provided on the outer wall of the fixing plate (15), and the fixing plate (15) is engaged and connected with the limiting groove (18) via the limiting strip (24).

7. The printing and drying air duct according to claim 6, characterized in that: Handles (25) are provided on the outer walls of both sides of the fixing plate (15), a rubber sleeve is embedded in the handle (25), and the width of the handle (25) is greater than the width of the fixing seat (14).

8. The printing and drying air duct according to claim 7, characterized in that: A first magnet (19) is provided on the outer wall of the fixing seat (14), and a second magnet is provided on the inner wall of the handle (25); the first magnet (19) and the second magnet are located at the same position and have opposite magnetic properties.

9. The printing and drying air duct according to claim 1, characterized in that: A mounting frame (22) is provided on the inner wall of the first mounting hole (20) and the second mounting hole (21); a third magnet (26) is provided on the outer wall of the mounting frame (22); a fourth magnet is provided on the outer wall of the filter plate (23); the third magnet (26) and the fourth magnet are located at the same position and have opposite magnetic properties.

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