Drying apparatus for paper webs

Abstract

The application provides a paper web drying device, which comprises a supporting box, an electric infrared heating unit and a heat dissipation device; the supporting box is formed with a sealed space, the sealed space is formed with a heat dissipation channel, the electric infrared heating unit is arranged on one side surface of the supporting box, the electric infrared heating unit is used for heating and drying the paper web transmitted outside the electric infrared heating unit, and the heat dissipation device is communicated with the heat dissipation channel and used for dissipating heat of the electric infrared heating unit. The paper web drying device provided by the application is mainly used for efficient, energy-saving and environment-friendly drying treatment of the paper web in the papermaking, printing and packaging industries, and the device can quickly and uniformly heat the paper web, remove the moisture in the paper web, coating and sizing, and improve the yield and quality of the paper web through the electric infrared radiation technology.

Claims

1. An apparatus for drying a paper web, characterized by The drying equipment includes a support box, an electric infrared heating unit, and a heat dissipation device; the support box forms a sealed space, the sealed space forms a heat dissipation channel, the electric infrared heating unit is disposed on one side surface of the support box, the electric infrared heating unit is used to heat and dry the paper web that is transported through the outside of the electric infrared heating unit, and the heat dissipation device is connected to the heat dissipation channel to dissipate heat from the electric infrared heating unit.

2. The paper web drying apparatus of claim 1, wherein, The support box is provided with a partition plate, which divides the heat dissipation channel into a first heat dissipation channel and a second heat dissipation channel. The electric infrared heating unit is located close to the first heat dissipation channel. The partition plate is provided with a vent hole, which connects the first heat dissipation channel and the second heat dissipation channel. The air inlet of the first heat dissipation channel and the air outlet of the second heat dissipation channel are located on the same side of the support box.

3. The paper web drying apparatus of claim 2, wherein, The heat dissipation device includes a cooling air supply device, which is connected to the air inlet of the first heat dissipation channel and is used to supply cold air to the first heat dissipation channel.

4. The paper web drying apparatus of claim 3, wherein, The cooling air supply device includes a cooler, a filter, and an air inlet pipe. The two ends of the air inlet pipe are connected to the cooler and the air inlet of the first heat dissipation channel, respectively. The filter is connected to the air inlet pipe and is used to filter the cool air passing through the air inlet pipe.

5. The paper web drying apparatus of claim 2, wherein, The heat dissipation device also includes an exhaust device, which is connected to the exhaust port of the second heat dissipation channel and is used to exhaust hot air from the second heat dissipation channel.

6. The paper web drying apparatus of claim 5, wherein, The exhaust device includes an exhaust fan, an exhaust duct, and a silencer. The two ends of the exhaust duct are connected to the exhaust fan and the exhaust port of the second heat dissipation channel, respectively. The silencer is connected to the exhaust duct and is used to silence the hot air passing through the exhaust duct.

7. The paper web drying apparatus of claim 1 wherein, The drying equipment also includes a control device, which is located outside the support box and is electrically connected to the electric infrared heating unit via a cable.

8. The paper web drying apparatus of claim 1 wherein, The drying equipment also includes an infrared reflector, which is disposed opposite to the heating surface of the electro-infrared heating unit. A heating gap is provided between the infrared reflector and the electro-infrared heating unit, and the paper web to be dried passes through the heating gap.

9. The paper web drying apparatus of claim 8, wherein, The surface of the infrared reflector facing the electro-infrared heating unit has a wave-like structure.

10. The paper web drying apparatus of claim 1, wherein, The support box is provided with hinge lugs and adjusting support wheels at opposite ends along its length. The hinge lugs are used to hinge with the external support frame, and the adjusting support wheels are used to slide against the external support frame to adjust the angle of the support box.

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