Energy-saving dehumidification mechanism for drying hot air of drying oven of printing machine

Abstract

The utility model relates to an energy-saving dehumidification mechanism for drying hot air of a printing machine oven, and relates to the technical field of printing machine ovens, the energy-saving dehumidification mechanism comprises an oven, the oven is communicated with an input pipe and a waste gas pipe, the energy-saving dehumidification mechanism further comprises a box body, and the box body is provided with an air inlet communicated with the waste gas pipe and an air supply outlet communicated with the input pipe; the interior of the oven body is divided into a cold side area and a hot side area in a layered mode, the ends, away from the oven, of the cold side area and the hot side area are communicated with each other, the oven body is rotationally connected with a heat exchange rotating wheel, one half of the heat exchange rotating wheel is located in the cold side area, the other half of the heat exchange rotating wheel is located in the hot side area, a fan is arranged in the oven body, and a condensation dehumidifier is arranged at the tail end of the hot side area. A first heater is arranged at the tail end of the cold side area. Waste gas heat exhausted by the gravure printing machine drying oven is recycled through the heat exchange rotating wheel, the situation of heat waste is reduced, and the energy efficiency is improved; the hot air circulation system is isolated from outside air, and energy consumption increase caused by the fact that outside cold air enters the drying system is avoided.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of printing machine oven, in particular to a kind of energy-saving dehumidification mechanism of printing machine oven dry hot air. BACKGROUND

[0002] Oven needs to be used in gravure printing machine, high-temperature air in oven is mainly used to dry curing ink, gravure printing machine oven temperature is generally set at 30~120 ℃, and the substrate after printing needs to pass through oven to dry the water or solvent in ink, to achieve the purpose of ink drying and curing.The exhaust gas temperature of gravure printing machine is between 30~95 ℃, and there is a large amount of heat that can be utilized, which will be wasted if directly discharged.

[0003] The invention patent application with publication number CN103818112A discloses a kind of waste gas heat recovery system device of gravure printing, including waste gas recovery system and fresh air heating system, the waste gas recovery system includes the waste gas heat exchange pipeline, exhaust fan and exhaust duct connected in sequence, and the waste gas heat exchange pipeline is installed purification heat exchange component group;The fresh air heating system includes fresh air heat exchange pipeline with two fresh air inlets, the fresh air heat exchange pipeline is installed heat pipe heat exchanger and oven inlet air suction device;The present application collects the heat of waste gas and steam condensate water in gravure printing production process, realizes preheating fresh air of introduction system device by heat exchange structure, then sends preheated fresh air into each unit steam heat exchanger inlet of gravure printing machine, is heated after steam heat exchanger and used to dry ink.

[0004] The related technology in the above uses heat pipe heat exchanger to exchange heat, thereby realizing energy saving, and the heat pipe heat exchanger is a copper pipe, and the fin of the heat pipe heat exchanger is hydrophilic aluminum foil, which reduces heat waste, improves energy efficiency, and provides another solution. Practical new type content

[0005] The present application provides a kind of energy-saving dehumidification mechanism of printing machine oven dry hot air, can be recycled and utilized to the heat of discharged air, reduce heat waste, improve energy efficiency.

[0006] The energy-saving dehumidification mechanism of printing machine oven dry hot air provided by the present application adopts the following technical solutions:

[0007] The utility model provides an energy -conserving dehumidification mechanism of printing machine oven dry hot air, including the oven, the oven is connected with input pipe and waste gas pipe, still including the box body, the box body is equipped with the air inlet of waste gas pipe communication, the air outlet of input pipe communication, the box body is divided into cold side area and hot side area in the layer, the end of cold side area, hot side area away from the oven intercommunication, the box body rotationally connects heat exchange runner, one half of heat exchange runner is located in cold side area, the other half of heat exchange runner is located in hot side area, be equipped with fan in the box body, the end of hot side area is equipped with condensation dehumidifier, the end of cold side area is equipped with heater no.

[0008] Through the above technical scheme, air circulates in the order of oven, waste gas pipe, air inlet, hot side area, cold side area, air outlet and input pipe, the drying air required by the oven passes through one half of the runner, and the air discharged by the oven passes through the other half. Due to the temperature difference between the inlet air and the exhaust air, the runner absorbs heat in the hot side area and releases heat in the cold side area, completing heat exchange and recovering heat, and reducing heat waste.

[0009] Optionally, the box body is provided with a filter, and the filter is located at the air inlet.

[0010] Through the above technical scheme, the filter filters dust from the hot and humid air discharged from the oven, ensuring that the air entering the box body is clean.

[0011] Optionally, the fan is located between the filter and the heat exchange runner.

[0012] Through the above technical scheme, the fan increases the flow rate of the air, making the air flow smoothly in the box body.

[0013] Optionally, the input pipe is provided with a heater two.

[0014] Through the above technical scheme, the heater two is used to more accurately adjust the temperature of the air entering the oven to meet the user's set drying temperature.

[0015] Optionally, the box body is provided with a motor, the output end of the motor is fixed with a driving wheel, and the driving wheel and the heat exchange runner are jointly sleeved with a transmission belt.

[0016] Through the above technical scheme, the motor drives the driving wheel to rotate, and then the transmission belt drives the heat exchange runner to rotate.

[0017] Optionally, the motor is fixed with a base, the base is fixed with a sliding block, and the box body is fixed with a guide rail for sliding of the sliding block.

[0018] By adopting the technical scheme, when the sliding block slides along the guide rail, the distance between the driving wheel and the heat exchange runner can be adjusted, so that the transmission belt is tensioned.

[0019] Optionally, the base is fixed with a screw block, and the box body is rotationally connected with a screw rod, and the screw rod is in threaded connection with the screw block.

[0020] By adopting the technical scheme, the motor is driven to slide by rotating the screw rod, so that the transmission belt can be re-tensioned after loosening; the threaded connection has the self-locking feature, so that the base is prevented from sliding spontaneously.

[0021] Optionally, the inside of the box body is completely separated from the outside air.

[0022] By adopting the technical scheme, the drying air is prevented from being discharged to the outside to cause pollution, and the outside air is prevented from bringing impurities into the drying air, and the temperature of the outside air is relatively low, so that the energy consumption of the drying system is prevented from being increased.

[0023] To sum up, the present application has at least one of the following beneficial technical effects:

[0024] 1. The heat exchange runner is used to recycle and utilize the waste gas heat discharged from the dryer of the intaglio printing machine, so that the heat waste is reduced, and the energy efficiency is improved.

[0025] 2. The hot gas circulation system is isolated from the outside air, so that the relatively cold outside air is prevented from entering the drying system to increase the energy consumption. BRIEF DESCRIPTION OF DRAWINGS

[0026] Figure 1 is a whole view of an energy-saving dehumidification mechanism for drying hot air of a dryer of a printing machine according to an embodiment;

[0027] Figure 2 is a perspective view of a heat exchange runner according to an embodiment;

[0028] Figure 3 is Figure 2 an enlarged view of A of

[0029] BRIEF DESCRIPTION OF DRAWINGS 1. Dryer; 2. Box body; 11. Input pipe; 12. Waste gas pipe; 21. Air inlet; 22. Air outlet; 23. Cold side area; 24. Hot side area; 25. Air flow partition; 3. Filter; 31. Fan; 4. Heat exchange runner; 41. Motor; 42. Driving wheel; 43. Transmission belt; 44. Base; 45. Sliding block; 46. Guide rail; 47. Screw block; 48. Screw rod; 5. Condensation dehumidifier; 6. Heater I; 7. Heater II. DETAILED DESCRIPTION

[0030] The present application will be further described in detail below with reference to the drawings.

[0031] Referring to Figure 1 The embodiment discloses an energy-saving dehumidification mechanism for drying hot air of a printing machine oven, comprising an oven 1 and an oven body 2, the oven 1 is communicated with an input pipe 11 and an exhaust pipe 12, the oven body 2 is provided with an air inlet 21 communicated with the exhaust pipe 12 and an air outlet 22 communicated with the input pipe 11, the oven body 2 is divided into a cold side area 23 and a hot side area 24, the division is realized by an air flow partition 25 fixed in the middle of the oven body 2, and the end parts of the cold side area 23 and the hot side area 24 away from the oven 1 are communicated with each other. The dry hot air flows in the oven 1 to dry the ink, and the hot air circulates in the order of the input pipe 11, the oven 1, the exhaust pipe 12, the air inlet 21, the hot side area 24, the cold side area 23 and the air outlet 22.

[0032] The inside of the oven body 2 is completely separated from the outside air, so that the drying air is prevented from being discharged to the outside to cause pollution, and the outside air is prevented from bringing impurities into the drying air, and the temperature of the outside air is relatively low, so that the energy consumption of the drying system is prevented from being increased.

[0033] The oven body 2 is provided with a filter 3, the filter 3 is located at the air inlet 21, the filter 3 filters dust in the hot and humid air discharged from the oven 1, and ensures that the air entering the oven body 2 is clean. The oven body 2 is provided with a fan 31, the fan 31 is located between the filter 3 and a heat exchange runner 4, and the flow rate of the air is increased through the fan 31, so that the air in the oven body 2 flows smoothly.

[0034] The oven body 2 is rotationally connected with the heat exchange runner 4, one half of the heat exchange runner 4 is located in the cold side area 23, and the other half of the heat exchange runner 4 is located in the hot side area 24, the heat exchange runner 4 recovers heat in the air discharged from the oven 1 to preheat the drying air required by the oven 1, so that the energy-saving effect is achieved. The heat exchange runner 4 is prior art, and a core component of the heat exchange runner 4 is a runner made of a special composite fiber or an aluminum alloy foil, the surface of the runner is covered with heat storage materials, and the runner is processed into a corrugated or flat plate form and then wound into a cylindrical heat storage core.

[0035] Referring to Figure 1 and Figure 2 The working principle of the heat exchange runner 4 is based on cold air exchange and hot air exchange, the drying air required by the oven 1 and the air discharged from the oven 1 flow through the heat exchange runner 4 in opposite directions alternately, the drying air required by the oven 1 flows through one half of the runner, and the air discharged from the oven 1 flows through the other half of the runner. Due to the temperature difference between the air inlet and the air outlet, the runner absorbs heat in the hot side area 24 and releases heat in the cold side area 23, so that heat exchange and heat recovery are completed.

[0036] Referring to Figure 2 and Figure 3The box body 2 is provided with a motor 41, the output end of the motor 41 is fixed with a driving wheel 42, the driving wheel 42 and the heat exchange runner 4 are jointly sleeved with a transmission belt 43, the driving wheel 42 is driven to rotate by the motor 41, and then the heat exchange runner 4 is driven to rotate by the transmission belt 43.

[0037] The motor 41 is fixed with a base 44, the base 44 is fixed with a sliding block 45, the box body 2 is fixed with a guide rail 46 for sliding of the sliding block 45, when the sliding block 45 slides along the guide rail 46, the distance between the driving wheel 42 and the heat exchange runner 4 can be adjusted, so that the transmission belt 43 is tensioned. The base 44 is fixed with a screw block 47, the box body 2 is rotationally connected with a screw rod 48, the screw rod 48 is threadedly connected with the screw block 47, the outer end of the screw rod 48 penetrates out of the box body 2 and is fixed with a screw head, the motor 41 is driven to slide by rotating the screw rod 48, and after the transmission belt 43 is loosened, the transmission belt 43 can be re-tensioned.

[0038] With reference to Figure 1 The end of the hot side area 24 is provided with a condensation dehumidifier 5. The principle of condensation dehumidification is to use refrigerant or cold water as cooling medium to flow through the inner cavity of the metal pipeline, and the air to be treated flows through the fins on the outer wall of the metal pipeline to exchange heat to cool the air. In the cooling process, the water vapor is condensed into liquid water, thereby achieving the effect of dehumidification.

[0039] The end of the cold side area 23 is provided with a heater one 6. The heater one 6 uses hot water or steam as heating medium, and its principle is to use the heat source medium to flow through the inner cavity of the metal pipeline, and the air to be treated flows through the fins on the outer wall of the metal pipeline to exchange heat to heat the air.

[0040] The input pipe 11 is provided with a heater two 7, which is a numerical control heater or a precision control heater. The heater two 7 is used to more accurately adjust the temperature of the air entering the oven 1 to meet the user's set drying temperature.

[0041] The implementation principle of the energy-saving dehumidification mechanism of the printed machine oven drying hot air according to the embodiment of the application is as follows: the gas discharged from the oven 1 is humid waste gas, after being filtered by the filter 3, the heat exchange runner 4 recovers the heat of the waste gas in the hot side area 24, the condensation dehumidifier 5 removes the moisture in the air, and at the same time significantly reduces the temperature of the air; then the heat exchange runner 4 preheats the air in the cold side area 23, and then the air is heated by the heater one 6 and the heater two 7 and then input into the oven 1 for use, thereby completing the cycle.

[0042] The application recovers and utilizes the heat of the waste gas by the heat exchange runner 4, thereby reducing the waste of heat and improving the energy efficiency.

[0043] The above are all preferred embodiments of the present application, and do not limit the protection scope of the present application, so that: all equivalent changes made according to the structure, shape, principle of the present application should be covered in the protection scope of the present application.

Claims

1. A kind of energy-saving dehumidification mechanism of printing machine oven dry hot air, including oven (1), the input pipe (11) and exhaust pipe (12) are communicated with oven (1), it is characterized by: The box body (2) is provided with an air inlet (21) communicated with the exhaust pipe (12) and an air outlet (22) communicated with the input pipe (11), and is divided into a cold side area (23) and a hot side area (24) in layers, the cold side area (23) and the hot side area (24) are communicated with each other away from the end of the oven (1), the box body (2) is rotationally connected with a heat exchange runner (4), one half of the heat exchange runner (4) is located in the cold side area (23), the other half of the heat exchange runner (4) is located in the hot side area (24), the box body (2) is provided with a fan (31), the hot side area (24) is provided with a condensation dehumidifier (5), and the cold side area (23) is provided with a heater (6).

2. The energy saving dehumidifying mechanism of the drying hot air of the printing press oven according to claim 1, characterized in that: The box body (2) is provided with a filter (3), and the filter (3) is located at the air inlet (21).

3. A mechanism for energy saving dehumidification of drying hot air in a printing press oven according to claim 2, characterized in that: The fan (31) is located between the filter (3) and the heat exchange runner (4).

4. The energy saving dehumidifying mechanism for drying hot air of a printing press oven according to claim 1, characterized in that: The input pipe (11) is provided with a heater (7).

5. The energy efficient dehumidification mechanism for drying hot air in a printing press oven as claimed in claim 1 wherein: The box body (2) is provided with a motor (41), the output end of the motor (41) is fixedly provided with a driving wheel (42), the driving wheel (42) and the heat exchange runner (4) are jointly provided with a transmission belt (43).

6. A mechanism for energy saving dehumidification of drying hot air in a printing press oven according to claim 5, characterized in that: The motor (41) is fixedly provided with a base (44), the base (44) is fixedly provided with a sliding block (45), and the box body (2) is fixedly provided with a guide rail (46) for sliding of the sliding block (45).

7. A mechanism for energy saving dehumidification of drying hot air in a printing press oven according to claim 6, characterized in that: The base (44) is fixedly provided with a screw block (47), the box body (2) is rotationally connected with a screw rod (48), and the screw rod (48) is threadedly connected with the screw block (47).

8. The energy efficient dehumidification mechanism for drying hot air in a printing press oven as claimed in claim 1 wherein: The inside of the box body (2) is completely separated from the outside air.

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