CN203157349U - Steam and electricity used heating device of gravure printing machine - Google Patents

Abstract

The utility model belongs to the technical field of printing machinery, in particular to a steam and electric dual-purpose heating device for a gravure printing machine, which includes a drying box, a fan connected to it, and an exhaust mechanism with a waste heat recovery function, and is characterized in that: The drying box includes two heat sources: a heat exchanger mechanism and an electric heating exchange box; the heat exchanger mechanism is provided with a heat exchanger air inlet communicating with the outside air, and a heat exchanger recycling hot air outlet communicating with the exhaust mechanism. And the heat exchanger located inside the heat exchanger mechanism; the electric heating exchange box is provided with an electric heating air inlet communicating with the outside air, an electric heating recycling hot air outlet communicating with the exhaust mechanism, and an electric heating exchange box inside the electric heating exchange box. Electric heating tube. The utility model can realize the automatic heating and conversion of electricity and steam at the same time, and the product has good versatility, which is beneficial to give full play to the energy saving of steam heating and the convenience of electric heating, and is economical and environmentally friendly, and the production is not limited.

Description

Steam and electric dual-purpose heating device for gravure printing machine

technical field

The invention belongs to the technical field of printing machinery, in particular to a steam and electric heating device for a gravure printing machine.

Background technique

In the printing industry, especially in the gravure printing process, when a variety of different color registration printing technology equipment is used, no positioning is required, and the online printing is completed in one go without misalignment. There is a steam heating device between the printing rollers to attach color and dry it for the next step of color registration. The existing heating devices are all separate steam heating devices or separate electric heating devices. The former is matched with the steam heating device at the customer's site. Due to limited conditions, the versatility is poor; the latter directly uses electric heating to cause high production costs. The prior art does not have a device for simultaneous steam and electric heating.

Contents of the invention

The purpose of the present invention is to make up for the deficiencies of the prior art, and to design a steam and electric dual-purpose heating device for gravure printing machines, which solves the problem of poor versatility due to the use of a separate steam heating device, or high production costs due to the use of electricity alone. question.

The technical scheme of the present invention is as follows.

The steam and electric dual-purpose heating device of the gravure printing machine is installed on the gravure printing machine and communicated with the oven on the gravure printing machine, including a drying oven and a fan connected to it, and an exhaust mechanism with waste heat recovery function. Its characteristics That is: the drying box includes two heat sources of a heat exchanger mechanism and an electric heating exchange box; the heat exchanger mechanism is provided with a heat exchanger air inlet communicating with the outside air, and a heat exchanger return communicating with the exhaust mechanism. The hot air outlet is used, and the heat exchanger located inside the heat exchanger mechanism; the electric heating exchange box is provided with an electric heating air inlet connected with the external air, an electric heating recycling hot air outlet connected with the exhaust mechanism, and an electric heating outlet located in the electric heating exchange box. The electric heating heat pipe inside the exchange box.

As an improvement of the above technical solution, both the heat exchanger recycling hot air outlet and the electric heating recycling hot air outlet are provided with damper plates.

As an improvement of the above technical solution, one end of the air duct of the fan is communicated with it as the exhaust part of the drying oven, and the other end is communicated with it as the hot air supply part of the oven.

As an improvement of the above technical solution, the exhaust mechanism includes an exhaust pipe connected to the dry box and a main air pipe connected to an external air purification device. The hot air extracted from the oven is discharged into the main air pipe through the air pipe, and the air Take over and connect with the air-exhausting variable-frequency blower fan that controls the air-exhausting flow. Each color group adopts an independent frequency converter to control the exhaust air volume, which can freely adjust the air intake and exhaust air volume faster and more conveniently.

As an improvement of the above-mentioned technical solution, part of the hot air drawn out from the oven discharged from the oven enters the drying oven as recycled hot air through the damper plate for controlling the air volume.

The beneficial effects of the present invention are: the present invention is reasonable in design, and can realize automatic heating and conversion of electricity and steam at the same time. It is not only suitable for electric heating alone, but also suitable for steam heating alone, and can also heat air at the same time with electricity and heat exchangers. Compared with the commonly used single electric heating method or heat exchanger heating method, it can be used in a wide range of areas and time, and the optimal heating method can be selected according to the customer's own conditions, giving full play to the energy saving of steam heating and the convenience of electric heating, economical Environmentally friendly and unlimited production.

Description of drawings

Fig. 1 is a schematic diagram of a partial cross-sectional structure of the present invention installed in the complete machine.

Fig. 2 is one of the partial structural diagrams of the present invention.

Fig. 3 is the second schematic diagram of the partial structure of the present invention.

Fig. 4 is the third schematic diagram of the partial structure of the present invention.

Among them, 1 drying box; 2 heat exchanger mechanism; 21 heat exchanger air inlet; 22 heat exchanger; 23 heat exchanger reuse hot air outlet; 3 electric heating exchange box; 31 electric heating air inlet; ;33 Electric heating reuse hot air outlet; 4 Fan; 5 Exhaust mechanism; 51 Exhaust air connection; Damper.

Detailed ways

In order to illustrate the content of the present invention more clearly, a further description will be made below in conjunction with the accompanying drawings and specific embodiments.

As shown in Figure 1, Figure 2 and Figure 3, the steam and electric dual-purpose heating device of the gravure printing machine is installed on the gravure printing machine and communicates with the oven 6 located on the gravure printing machine, including the drying oven 1 and its communication fan 4, and an exhaust mechanism with waste heat recovery function, the drying box 1 includes two heat supply sources of a heat exchanger mechanism 2 and an electric heating exchange box 3; The air inlet 21 of the exchanger, the hot air outlet 23 of the heat exchanger communicated with the exhaust mechanism 5, and the heat exchanger 22 located inside the heat exchanger mechanism 2; The heating air inlet 31 , the electric heating recycling hot air outlet 33 connected with the draft mechanism 5 , and the electric heating heating pipe 32 located inside the electric heating exchange box 3 .

Both the heat exchanger recycling hot air outlet 23 and the electric heating recycling hot air outlet 33 are provided with a damper plate 7 .

One end of the air duct of fan 4 is communicated with it as the exhaust part of drying box 1, and the other end is communicated with it as the hot air delivery part of oven 6.

The exhaust mechanism 5 comprises an exhaust pipe 51 communicated with the drying box 1 and a main exhaust pipe 53 communicated with an external air cleaning device. It is connected with the ventilation frequency conversion fan 52 that controls the ventilation flow.

As shown in FIGS. 1 and 4 , a part of the hot air 54 drawn out from the oven 6 enters the drying oven 1 as the recycled hot air 55 through the damper plate 7 controlling the air volume.

As shown in Figure 1, Figure 2, Figure 3 and Figure 4, in actual use, according to the actual needs of the company, the start-up heat exchanger mechanism 2 and the electric heating exchange box 3 are set. If the steam heating is started, the external air enters the inside of the heat exchanger mechanism 2 through the damper plate 7 at the air inlet 21 of the heat exchanger, and is sent into the oven 6 by the fan 4 after being heated by the heat exchanger 22. Part of it is controlled by the frequency conversion fan 52 and enters the main exhaust pipe 53 from the exhaust connection pipe 51, and is discharged into the external purification device. The other part of the oven extracts hot air 54 as recycled hot air 55 and enters the heat exchanger mechanism 2 for recycling through the damper plate 7 that controls the air volume. . If the electric heating is started, the external air enters the inside of the electric heating exchange box 3 through the damper plate 7 at the air inlet 31 of the electric heating, and is sent into the oven 6 by the fan 4 after being heated by the electric heating heating pipe 32. Part of it is controlled by the frequency conversion fan 52 and enters the main exhaust pipe 53 from the exhaust connection pipe 51, and is discharged into the external purification device. The other part of the oven extracts hot air 54 as reused hot air 55 and enters the electric heating exchange box 3 for recycling through the damper plate 7 that controls the air volume. .

Above-mentioned embodiment only illustrates the principle and effect thereof of the present invention creation, can not be considered as the limitation of protection scope of the present invention, for those of ordinary skill in the art, under the premise of not departing from the inventive conception of the present invention, can also do Several modifications and improvements should be made within the protection scope of the claims of the present invention.

Claims (4)

1. The steam and electric dual-purpose heating device of the gravure printing machine is installed on the gravure printing machine and communicated with the oven (6) on the gravure printing machine, including the drying oven (1) and the fan (4) connected with it, And an exhaust mechanism with waste heat recovery function, characterized in that: the drying box (1) includes two heat supply sources of a heat exchanger mechanism (2) and an electric heating exchange box (3); It is provided with a heat exchanger air inlet (21) communicating with the outside air, a heat exchanger recycling hot air outlet (23) communicating with the exhaust mechanism (5), and a heat exchanger located inside the heat exchanger mechanism (2) (22); the electric heating exchange box (3) is provided with an electric heating air inlet (31) connected with the external air, an electric heating recycling hot air outlet (33) connected with the exhaust mechanism (5), and an electric heating The electric heating heating pipe (32) inside the exchange box (3). 2. The steam and electric dual-purpose heating device for the gravure printing machine according to claim 1, characterized in that: one end of the air duct of the fan (4) is connected to it as the exhaust part of the drying box (1), and the other end As the hot air supply part of baking oven (6), it is communicated with it. 3. The gravure printing machine steam and electric dual-purpose heating device according to claim 1, characterized in that: the exhaust mechanism (5) includes an exhaust connection pipe (51) connected to the drying box (1), and an external The main exhaust pipe (53) connected to the air purification device, the hot air extracted from the oven (6) is discharged into the main exhaust pipe (53) through the exhaust connection pipe (51), and the exhaust connection pipe (51) is connected with the ventilation frequency conversion control of the ventilation flow Fan (52) connection. 4. The gravure printing machine steam and electric dual-purpose heating device according to claim 1, characterized in that: part of the hot air (54) discharged from the oven (6) is recycled as hot air (55) through The damper plate (7) controlling the air volume enters the drying box (1).

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