NNEWS CENTER

What equipment is there for preparing materials in a toilet paper making machine?

The paper-making machine includes raw material preparation, pulping, paper-making, right up to the finished roll or flat sheet, as well as paper and cardboard processing machinery. It is equipment for preprocessing and processing paper-making raw materials before cooking or grinding, divided into non-wood fiber and wood fiber. The former includes mowers, reed cutters, and sugarcane pith removers, while the latter includes bark peelers and cutters. The chipper machine cuts logs into specific-sized wood chips needed for wood pulp production and comes in disc and drum types. The digester dissolves lignin from the paper-making raw material in the cooking liquid, separating the raw materials into fibers. It can be batch or continuous. The grinder, used to produce ground wood pulp, varies in design depending on the type of wood pressing method, being either hydraulic or mechanical.

Pulping equipment is a device that separates plant materials into fibers. Pulping methods include chemical, mechanical, and chemi-mechanical. Corresponding pulping equipment includes cookers, wood grinders, hot grinders, pulp washers, pulp bleachers, beaters, and waste liquid recovery devices. Wood chips steamed and preheated, then ground under high pressure, produce a pulp called thermomechanical pulp. Machines that produce this are called hot grinders. Hot grinders consume a lot of electricity, so maximizing the use of heat energy during the grinding process is a significant concern. Cleaners are mechanical devices that separate pulped material from black liquor after cooking.

The purpose of bleaching is to remove residual lignin and pigments from the pulp to improve its brightness, making the pulp appear white. A pulper is a widely used bleaching device, consisting of a bleaching pool spiral propeller, washing cylinder, etc. Pulp and bleaching agents are added to the pool, continuously mixed with wash water, and circulated within the pool through the spiral propeller, completing the mixing and chemical reactions. Water containing bleaching by-products and residual bleach solution is drained through the inner cavity of the washing drum, resulting in a clean white pulp.

Toilet paper machine

What are some common characteristics of malfunctions in a toilet paper making machine? Currently, the paper industry is developing better and better. When using paper machinery frequently, inevitable malfunctions of various magnitudes occur. At such times, we need to take measures for timely maintenance to ensure the normal use of the paper machinery equipment. Next, Zhucheng Tiangong Paper Machinery Co., Ltd. will introduce a few characteristics of malfunctions that paper machinery equipment is prone to.

1. Mechanical system failures, symptoms, and causes have overlapping areas. Generally, when there’s a malfunction in the mechanical system, the reasons are many. For example, issues like the actuating element’s speed being too slow, overload, poor lubrication, large rail errors, and more. Moreover, a single malfunction source may reflect multiple symptoms; conversely, one symptom might arise from various malfunction sources.
2. Some mechanical system malfunctions, such as system failures or damage, are often internally caused. In our country, due to the lack of an effective paper machinery system, diagnosing a malfunction requires dismantling the machinery, which is time-consuming and labor-intensive. This also, to some extent, complicates identifying the malfunction source. A valid method to identify such malfunctions is direct visual inspection. Moreover, there are many reasons for mechanical failures, making them challenging to analyze.
3. In the daily operation of paper machinery equipment, factors like variations in grid voltage, temperature changes affecting the machinery, and the intrusion of contaminants may cause mechanical system failures. The uncertainty of these factors is also evident in other aspects, including instability, non-linearity, and non-Gaussian distribution. These form features of the malfunction that can’t be clearly seen, leading to situations where the source of the mechanical malfunction can’t be accurately identified.