paper making machine

Weifang Kairui Commercial Co., Ltd. is a professional enterprise producing pulp and paper machinery and environmental protection sewage treatment equipment.

it products Pulp and paper machinery; sewage treatment equipment; pulping equipment; screening equipment; refining equipment; pulp washing equipment; papermaking machinery; environmental protection machinery；

Pulping equipment

It is the equipment used in the process of separating plant raw materials into fibers. The pulping method can be divided into chemical method, mechanical method and chemical mechanical method. The corresponding pulping equipment includes digester, wood mill, heat mill, pulp washing machine, pulp bleaching machine, beater and waste liquid recovery equipment.
After the wood chips are preheated by steam, the slurry that is pulverized under high pressure is called hot wood chip grinding pulp. The machine for making hot wood chip grinding pulp is a hot mill, which consumes a lot of power, so it is sufficient. The use of thermal energy in the refining process is the key issue of the thermal mill; the pulp washing machine is a mechanical device that separates the cooked pulp from the black liquor. According to the black liquor extraction rate, there are two types of extraction: high concentration and low concentration.
The purpose of pulp bleaching is to remove the lignin and pigment remaining in the pulp after cooking, improve the whiteness of the pulp, and make the pulp have a white color. Bleaching machine is a kind of bleaching equipment which is generally used. It consists of screw propeller of bleaching tank, washing drum and other components. The slurry and bleach are placed in the pool and the washing water is continuously added, and the circulation and flow in the pool are assisted by the action of the screw propeller to complete the mixing and chemical reaction process. Water with bleaching products and residual bleaching liquid is discharged through the inner cavity of the washing drum, resulting in white pulp.

Paper machine
It is a complete set of equipment that links the pulp to form a web, including headboxes, nets, presses, dryers, calenders, paper reels, and drive units, as well as steam, water, vacuum and lubrication , Heat recovery and other auxiliary systems. The wire section forming the wet paper web is the core of the paper machine, so the paper machine can be further divided into fourdrinier paper machines, pinch paper machines and cylinder paper machines according to the structure of the wire section.
The headbox is a device that sends the proper concentration of slurry to the network uniformly and stably through the distributor, rectifier, weir, weir plate nozzle and other components. It is also called the front box; the slurry is sprayed from the headbox to the copper. After the web, a wet paper sheet is formed on the web part and dewatered; followed by pressing, that is, mechanically extruding the moisture of the wet paper sheet from the web part to increase the dryness of the paper sheet and improve the surface properties of the paper sheet , Eliminate net marks and increase smoothness, tightness and strength; then enter the drying section to further dewater the wet paper sheet after pressing, shrink the paper sheet, tighten the fiber and increase the strength.
After the paper sheet from the drying section is calendered by a calender, it can improve the smoothness, gloss and tightness of the paper sheet, make the entire thickness of the paper sheet uniform, and reduce the air permeability. Finally, the paper web is rolled by a paper roll machine. Rolling into a paper roll completes the main process of papermaking. In order to meet different needs in the future, there are also super calenders, rewinders, paper cutters, etc. behind the paper mill in the paper workshop.

The company has been exporting to many overseas countries and has professional after-sales installation, commissioning, professor, papermaking and other teams, which can solve the worries for manufacturers.