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Factors to Consider Before Buying a Belt Filter Press
A belt filter press has several factors that hugely impact its processing capacity. If you are looking to purchase a belt filter press will be advantaged to have these factors at your fingertips. This article explores the key factors to consider when buying and how they can be at fault while using a belt filter press.

Choosing a filter belt press is not a straight forward as many people think and all these factors need to come into play if you are to get the best quality machine. There are many different designs of belt press machines in the market today and picking out the one that perfectly suits your project is important. The first thing you need to do is to visit the website of the belt press machine seller and study the specifications of the different machines. If you have any questions that you need to be clarified about belt press machines, it is advisable to get in touch with the seller through the contact information left on their webpage.

Firstly, the gravity dehydration zone: is crucially important in a belt filter press, free water is yielded at this stage via flocculation. The gravity dehydration zone receives flocculated sludge and the free water obtained requires to be removed here. The flocs are put on the filter belt and the free water demands to be removed by the flocs through the filter belt. As a result, the gravity dehydration part is enormously burdened against its limited length, which should remain unchanged as a measure to improve the efficiency of the section.

Secondly, the wedge-shaped dewatering zone. This section is tasked with the double roles of gravity dehydration and press dewatering, therefore a critical factor to know about while looking for a belt filter press. During the operation of the filter belt, the sludge enters the wedge-shaped dewatering section subsequently after passing through the gravity dehydration zone. Thus, the wedge-shaped part also affects the processing of the belt filter press. The sludge, while still in a state of free gravity dehydration and has a strong flow, – if pressed suddenly will inevitably quickly spread around the pressure point. If the sludge enters the extrusion part and the angle formed by the two filter belts is very high, a phenomenon called “sludge running” will consequently occur when the sludge is unloaded from both sides of the filter belt. Thus, this zone should be handled expertly to avoid faulting the processing, especially during the dehydration process. You should put important things into consideration: the extent of the wedge angle against the length of the gravity dehydration zone, the speed margin of the filter belt, the length of the wedge zone, how permeable to water the filter belt is, etc. These factors, considered, will guarantee you an efficient and big processing capacity of the belt filter press.

The third thing that you need to put a lot of consideration on is when choosing the length of the gravity dehydration zone. Other factors that you need to look into include the speed range of the filter belt, how permeable it is to water, the span of the wide zone and the overall processing capacity. It is also important to ensure that the dewatering zone is large enough to reduce the tendency to overflow from either side of the filter belt press.

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