I. belt filter press operation automation, the most labor-saving, belt filter press maintenance management easy;Excellent mechanical performance and good durability, covers an area of province;Suitable for all kinds of sludge dehydration, high efficiency, large capacity;Multiple dehydration, strong dehydration capacity, low sludge cake moisture content;Energy saving, less power consumption, low speed operation, no vibration and no noise;Continuous operation of belt filter cloth, automatic washing, easy to operate;Belt filter press filter cloth winding automatic correction, smooth operation;Press cloth installation, easy exchange, simple maintenance;Low dosage, low operation cost and reasonable price.

2. Main application scope

It is widely used in the sludge dewatering treatment of urban domestic sewage, textile, printing and dyeing, electroplating, papermaking, leather, brewing, food processing, coal washing, petrochemical, chemical, metallurgy, pharmaceutical, ceramic and other industries.

3.The working principle of belt filter press and the dewatering process of the system

With a certain concentration in the concentration of sludge flocculation agent after full mixed in the static, dynamic mixer, tiny solid particles in the sludge flocculent poly condensed bulky mass, separate the free water at the same time, the sludge after flocculation was to concentrate the filter with the gravity dehydration, under the action of gravity, free water is separated, form the flow state of sludge, and clamping between the upper and lower two mesh belt, wedge preloading area, low pressure area and high from small to large, under the action of shear force of extrusion pressure, extrusion sludge, step by step to achieve the degree of mud and water separation, finally forming filter cake to discharge.

1. Chemical pretreatment dehydration

In order to improve the sludge dehydration nature, improved the properties of the filter cake, increase the permeability of the material, need to chemical treatment of sludge, the machine USES unique "water flocculation granulation mixer device to achieve the effect of chemical dosing flocculation, this method is not only good flocculation effect, still can save a lot of reagents, low operating cost, economic benefit is obvious.

2. Gravity concentration dehydration section

Sludge is uniformly sent into the net belt by the cloth bucket, sludge runs forward with the filter belt, and the free water flows into the receiving tank through the filter belt under the action of gravity. Gravity dehydration can also be said to be a highly concentrated section, the main function is to remove free water in the sludge, reduce the fluidity of sludge, and prepare for further extrusion.

3. Pre-compressed dehydration section in wedge area

Gravity dehydration after sludge liquidity almost completely lost, with the belt type filter press filter belt running forward, upper and lower filter with spacing gradually reduce, material began to be slight pressure, and with the filter belt running, pressure increases gradually, is used to extend the time of gravity dehydration, wedge area increase floccules extrusion stability, preparing for entering pressure area.

4. High pressure dehydration section of extrusion roller

Material from wedge area into pressure area, material in this area get squeezed, along the belt running direction stress increased along with the reducing of squeezing roller diameter, material is extruded volume contraction, free water clearance within the material being squeezed out, at this point, the basic formation of filter cake, move on to high at the end of the pressure after high pressure of the filter cake moisture content can be dropped.

5. Material discharge

After the material is dehydrated in the above stages, the filter cake is formed and discharged. The material is scraped off by the mud scraper, and the upper and lower filter belts are separated.