Soft calendering roller equipment for improving smoothness of paper and soft calendering method

Abstract

The invention discloses soft calendering roller equipment for improving the smoothness of paper and a soft calendering method. The soft calendering roller equipment comprises a soft calender roll device body, a hydraulic oil pump, hydraulic oil cylinders, an electromagnetic valve, a hydraulic oil pipe, a switching power supply, temperature control switches, electric heating pipes, a self-inductionpower generation heating mechanism, a pressure monitoring switch and a data processing module. The plurality of electric heating pipes are respectively arranged in an upper soft calendering roller outer layer and a lower soft calendering roller outer layer; the temperature control switches are respectively arranged in holes of the upper soft calendering roller and the lower soft calendering roller; shaft rods and bearings are arranged in the upper soft calendering roller and the lower soft calendering roller; a plurality of electromagnetic coils are respectively arranged on the inner layers of the upper soft calendering roller and the lower soft calendering roller; two permanent magnets respectively sleeve outside the shaft rods, the hydraulic oil cylinders are installed below the left side and the right side of the upper portion of the rack, the hydraulic oil cylinders are connected with the upper ends of bearing seats on the left side and the right side, the switching power supply and the data processing module are installed on a circuit board, and the pressure monitoring switch is installed below the bearing seat at the upper left end. The soft calendering method of the soft calendaring roller equipment is divided into four steps. According to the invention, the purposes of flattening, calendaring and shaping of finished paper are ensured.

Description

technical field [0001] The invention relates to the field of papermaking equipment and its application method, in particular to a soft calender roll equipment and a soft pressing method for improving the smoothness of paper. [0002] technical background [0003] The soft calender roll equipment is an important part of the paper machine. The main structure is composed of two soft calender rolls distributed vertically and horizontally from top to bottom, a belt or gear reducer, a frame, a motor and necessary adjustment mechanisms. When working, the motor drives the two soft calender rollers connected to the belt pulley or gear reducer power output shaft through the belt or gear reducer to run in the opposite direction, so that the semi-finished product between the two soft calender rollers enters from a process on the papermaking equipment After the paper is pressed by the pressure of two soft calender rollers, the purpose of flattening, calendering and shaping of the finished...

AI Technical Summary

Problems solved by technology

One is to supply power to the electric heating tube inside the rotating soft calender roller through the slip ring structure, and the external power supply enters the power input end of the electric heating tube in the rotating soft calender roller through the slip ring, and then the electric heating tube generates heat and soft pressing The inside of the smooth roller maintains a certain temperature, which is beneficial to the pressing of the paper and achieves a good pressing effect; in this way, the power supply of the slip ring is required, and the electric heating tube contacts the slip ring in a fixed state through the rotating contact piece, so when working, both There will be wear between them, and it is easy to generate arcs, which will cause ablation of the contact parts of the contact piece and the slip ring, and the contact piece and the slip ring are exposed to the air, and are easily affected by oxidation and dust, resulting in poor contact. Therefore, this heating and heat preservation method It is rarely used in the industry

Another way is to pump the heated water into the soft calender roll for heating through an external water pump, and the heated water flows out of the heating equipment and then pumped into the soft calender roll for heating; this way overcomes many problems of electric heating, However, it has the disadvantages of many structural parts, high manufacturing and operating costs, and the sealing structure between the rotating soft calender roll and the water inlet pipe in a fixed state is complicated, the running time is long, and water leakage is extremely easy to occur after the sealing components are worn. affect normal production

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