Spray Nozzle for Cleaning Paper Machine Clothing

Spray Nozzle for Cleaning Paper Machine Clothing

Cleaning paper machine clothing including press felt, forming fabric, and dryer fabric, is one of the most important part for paper industry. Normally cleaning nozzle including high pressure needle nozzle and fan shaped nozzle, they can form high pressure straight or fan shape liquid flow, to clean the fiber and impurity which sticked on the felt and fabric surface. Finally to make sure the felt and fabric working efficiently.

1. Forming fabric cleaning: The forming section is one of the key parts in paper machine production, responsible for evenly distributing pulp on the paper machine mesh to form the basic structure of the paper. The forming section often needs to be cleaned to maintain its normal operation and production quality. The cleaning effect of the forming fabric is a key factor that cannot be ignored in the papermaking process. The occurrence of most paper diseases is closely related to the cleaning effect of the forming fabric. Choosing high-quality nozzle products has a significant impact on both cleaning effectiveness and production efficiency. A common method of cleaning the forming fabric is to use high-pressure nozzles to clean the forming fabric. High pressure water flow can effectively remove dirt and fiber residue from the mesh to maintain its cleanliness. In addition, the spray direction and angle of the nozzle also need to be adjusted to ensure that the coverage area and intensity of the water spray are appropriate, avoiding damage to the forming fabric.

2. Dryer fabric cleaning: The dryer fabric is an important component on paper machines, responsible for filtering, pressing, and drying pulp. After a period of use, a large amount of impurities such as fibers, particles, and dirt will accumulate on the dryer fabric, which will affect the filtration efficiency and operational stability of the dryer fabric. Therefore, cleaning is necessary. High pressure water nozzle is usually used for cleaning, and high wear and high pressure resistance performance is required for the nozzle during this process. Generally, high-pressure needle nozzles with embedded ruby cores.

3. High pressure felt cleaning: pres felt are a very important part of the papermaking process and need to be cleaned regularly to ensure their cleanliness and good working condition. Using a high-pressure nozzle for cleaning felt is an effective method, but some techniques need to be noted. It is generally recommended to use a pressure of 1.0-1.5MPa for continuous spraying during the operation of the paper machine to achieve effective washing. At the same time, attention should be paid to the reasonable adjustment of the movement amplitude and speed of the high-pressure spray pipe to avoid overlapping or missing spraying, which can lead to the formation of streaks and affect production quality. When selecting a nozzle, it is recommended to use a fan-shaped nozzle to ensure uniform spraying. It is best to choose the flushing point next to the rotating guide roller, not on the tension roller, and directly flush the running surface. This can effectively remove dirt and impurities from the surface of the felt, without causing damage to the fluff on the felt surface.