Forming Section Machine Headbox for Paper Making

• After-sales Service: Warranty
• Warranty: 1 Year
• Certification: ISO 9001:2000, ISO 9001:2008
• Surface Treatment: Polishing
• Manufacturing Process: Casting
• Material: Stainless Steel
• Hayır. Modeli.: Sun Hong
• koşul: yeni
• özelleştirilmiş: özelleştirilmiş
• ham madde: ahşap posa, atık haznesi
• çalışma hızı: 90 m/dak
• Taşıma Paketi: Wooden Case
• Teknik Özelikler: made to order
• Ticari Marka: sun hong
• Menşei: China
• HS Kodu: 84399900

Ürün Açıklaması

Product Description

The Headbox is located at the begining of the paper machine. Headbox is the key part of modern paper machine.Headbox plays a decisive role in paper making process, it in charge of put the pulp suspension on the wire at a constant speed and with a defined fiber direction. It considerably influences the paper's technological performance. Therefore, there are high requirement on it's accuracy and precision.

Classification

1.Open headbox
Used for paper machine with speed below 250m/min,pulp speed controlled by liquid level height.

2.Air cushion headbox
It is used for paper machine with the speed of 250-600m/min and the pulp is controlled by air cushion pressure.

3.Hydraulic headbox
Used for paper machine with speed greater than 900m/min.

Main structure

The overall structure of the cone tube, square cloth pulp, step diffusion, oblique slurry, movable lip plate, the mediation and the dial gauge adjustment. The dial gauge to fine tune the spacing of about 126mm.

1. Box: the oblique slurry, reduce the box body size retention phenomenon.

2. Square taper pipe: by the size of the composition of end and side cone tube, size end as the day round place, equipped with a pressure balance tube.

3. Step hole orifice plate in the solid organic glass processing, using three diffusion hole.

4. Rectifier roll headbox device: weir pool with two sets of rectifier roll, the diameter of 200mm, wall thickness of 4mm. The opening rate rectifier roll adopts stainless steel throat roll and lip homogenate roll are respectively 35%--50% (design time), - cycloid reducer motor power 1.5KW.

5.The upper lip plate adjustment device: the regulation and local regulation two parts, local regulation with dial gage tuning liplocal opening fine-tuning, ensure that the paper banner quantitative difference requirement, upper plate can be adjusted up and down.

6 Lip plate is fixed.

7.The front wall provided with an overflow plate, can be adjusted up and down.

8.Spray pipe is a stainless steel tube, nozzle nozzle for nylon.

9.For the convenience of the front wall trimming, cross platform and ladder.

Product Parameters

Paper kinds	Kraft paper,fluting paper
Raw material	Wood pulp,waste paper
Working speed	90-180m/min
Design speed	200m/min
Quantitative	100-190g/m^2
Spout width	2100mm
Pulp inflow consistency	0.4%-0.8%
Dryness of finished paper	93%
Beating degree	20-50°SR
Diameter of breast roll	D400

Main tasks

It can effectively disperse fibers. High turbulence headbox can produce high-intensity micro turbulence, which can effectively disperse fibers, prevent fiber precipitation and flocculant together again, and effectively improve the strength of paper.
Distribute the paper evenly along the transverse direction of the paper machine. (determines the lateral quantitative distribution of the web)
The spraying is stable to ensure the coordination of slurry speed and mesh speed. (determine the longitudinal quantitative distribution of the paper web.

Operating principle

1.level control
During operation, a stable air cushion must be formed above the liquid level in the headbox.In order to stabilize air cushion pressure and reduce pulse, liquid level control is very important.During operation, there are high liquid level and low liquid level. The pressure head in the headbox is provided by the slurry flushing pump, and the liquid level can be seen through the glass mirror above. When starting up, the valve controlling the liquid level must be opened. In operation, the two valves controlling the liquid level must be opened and closed. The separation pipe must be kept unobstructed.

2.pressure control
The compressed air is controlled by a pressure stabilizing valve, the set pressure is 8-10psi, and the flow is adjusted by the needle valve. When the pressure and flow are set properly, it is not necessary to adjust in the future.
3.Dilution water control
The dilution water pump is controlled by low pulse and variable frequency speed regulation. The dilution water is controlled by differential pressure, and the differential pressure between the dilution water head and the headbox head generally does not exceed 4 psi. The flow of dilution water affects the flow, concentration and banner of slurry pump. Under the operating conditions of the same paper machine, the continuous and stable dilution water must be ensured.

Packaging & Shipping

1. International package  (Wooden case, carbon cast and pallet);

2. Container (as customer requirements)

3. It is suitable for long distance ocean transportation and some small parts can be transported by air.