A semi-dry calender
A semi-dry pressing and finishing technology, applied in calenders, paper machines, textiles and paper making, etc., can solve the problems of wasting energy by heating the heating roller, and the heating range of the heating roller cannot be adjusted according to the requirements of paper width, etc. Avoid overall heating, temperature stabilization, energy saving effects
Active Publication Date: 2022-05-17
HANGZHOU NORTH STAR LIGHT IND MACHINERY CO LTD
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Problems solved by technology
[0003] The present invention aims to overcome the technical defect that the heating range of the heating roller cannot be adjusted according to the paper width requirement in the prior art, and the overall heating of the heating roller wastes energy, and provides a calender that can be adjusted according to the paper width. Semi-dry calenders with heated range of heated rolls
Method used
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Embodiment 1
[0033] Such as figure 1 and 2 Therefore, a semi-dry calender includes a frame 1, an upper calender roll 2 fixed on the frame 1, a lower heating roll 3 matched with the upper calender roll 2, and a power unit connected to the lower heating roll 3 The device 4, the liquid inlet pipe 5 connected to the power device 4, and the liquid outlet pipe 6 connected to the lower heating roller 3; the lower heating roller 3 includes a central shaft 301, a first slider 302 that can slide on the central shaft 301, and a second Two sliders 303, a telescopic sleeve 314 fixedly connected to the first slider 302 and the second slider 303, and a heating roller body 310 fixedly connected to the central shaft 301, the telescopic sleeve 314 is set on the outside of the central shaft 301, and the two ends They are respectively fixedly connected with the first slider 302 and the second slider 303. The combination of the first slider 302, the second slider 303, the heating roller body 310 and the centr...
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The invention discloses a semi-dry calender, which comprises a frame, an upper calender roll fixed on the frame, a lower heating roll matched with the upper calender roll, a power device connected with the lower heating roll, and a The liquid inlet pipe on the power unit and the liquid outlet pipe connected with the lower heating roller; the lower heating roller includes a central shaft, a first slider and a second slider that can slide on the central shaft, and the first slider and the second slider The telescopic sleeve fixedly connected to the slider and the heating roller body fixedly connected to the central shaft, the telescopic sleeve is sleeved outside the central shaft, the first slider, the second slider heating roller body and the telescopic sleeve form a liquid storage chamber. The beneficial effects of the present invention are: by adjusting the distance between the first slider and the second slider in the heating roller, the liquid storage chamber formed between the two sliders is changed, and the heat medium in the liquid storage chamber can The lower heating roller is heated to realize the adjustment of the heating range of the heating roller.
Description
technical field [0001] The invention relates to the related technical field of papermaking equipment, in particular to a semi-dry calender. Background technique [0002] In the papermaking industry, the semi-dry calender is usually used between the drying cylinders of the paper machine or board machine, and the paper web has a smoother surface and higher tightness by means of the nip between the metal rolls. Or appropriately reduce the thickness of paper or cardboard. The semi-dry calender usually has 2-3 pressing rollers. After being treated by the semi-dry calender, the semi-dry paper web has a higher tightness and a smoother surface, and it can be in closer contact with the drying cylinder on the drying cylinder. Improve heat transfer efficiency and paper smoothness. The heating rolls of existing semi-dry calenders are mostly heated as a whole, and the required heating range is also different due to the difference in paper width. When the calender with heating roller i...
Claims
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IPC IPC(8): D21G1/00D21G1/02
CPCD21G1/0073D21G1/0266D21G1/02D21G1/0006Y02P70/10
Inventor 李砚丰蔡敏于全武李树光朱小江吴莉莉
Owner HANGZHOU NORTH STAR LIGHT IND MACHINERY CO LTD