In liquid-solid separation, filter press technology has always played a crucial role. Among the many filtration presses, the recessed chamber filter press has become one of the first choices in many industries due to its unique design and efficient filtration performance. In this article, we will discuss the working principle, advantages, and features of the recessed chamber filter pressand its applications in different fields to give you a comprehensive understanding of this important liquid-solid separation equipment.
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A recessed chamber plate filter press is a common type of filter press equipment used for solid-liquid separation. It is a type of plate and frame filter press and plays an important role in the solid-liquid separation process.
It consists of a series of vertically aligned filter plates and filter cloth, with a series of recesses (also known as chambers) formed between the plates, which form fixed filter press chambers during the filter press process. When the feed liquid is pumped, solid particles are retained by the filter cloth in the filter press chambers between the recesses, while clean liquid flows out through the filter cloth. The recessed filter press is usually used to process high concentrations of suspended solids, such as sludge, mud, etc. It has the advantages of high efficiency, energy saving, and easy operation.
The filter plate is one of the important parts that make up a recessed filter press, and it is usually made of materials with a certain degree of strength and corrosion resistance, such as polypropylene and cast iron. The upper surface of the filter plate is usually covered with a filter cloth, which is used to filter solid particles and leave clean liquid. The filter plate usually also has guide grooves or guide holes to guide the feed liquid into the filter press chamber to ensure uniform and stable filter press results.
Through this process, the recessed chamber filter press can effectively separate the solid particles from the liquid in the mixture, thus realizing the purpose of liquid-solid separation. This principle of operation makes the recessed filter press an important piece of equipment in liquid-solid separation applications such as the treatment of wastewater, sludge, chemicals, foodstuffs, and more.
There are some differences between recessed cchamber filter press and belt filter press in terms of structure, filtration principle, operation mode, filtration range, application area and maintenance cost, etc. It is necessary to choose the appropriate filter press according to the specific application requirements and conditions.
Once the chambers are filled, the continued arrival of sludge in the recessed filter press causes a deeper and deeper layer of sludge to form on the filter cloth, which increases the resistance of the filtration system and leads to higher pressures. Typically, maximum filtration pressure is reached within 30 to 45 minutes. The duration of filtration may take anywhere from 1 to 5 hours, depending on the depth of the chamber and the filterability of the sludge. The filtration stage is usually controlled by a timer to set the period during which the maximum pressure is maintained, to obtain a final filtrate output of 5 to 10 square meters of filtration surface area per hour with polymer conditioning and up to 20 square meters per hour with mineral conditioning. When the filter pump is switched off, compressed air is used to drain the internal liquid sludge and the filter circuit.
As an efficient solid-liquid separation equipment, the recessed chamber filter press provides a reliable solution for wastewater treatment and solid material separation in many industries. Through its unique design and reliable performance, the recessed chamber filter press demonstrates outstanding efficiency and effectiveness in handling various types of suspended liquids.
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The plate and frame press are the most fundamental and the conventional type of filter press. The modern version of a filter press uses plates that have recesses and are therefore called recessed chamber filter presses.
Recessed chamber presses are widely popular and used by various industries, including industrial and municipal wastewater to chemical processing, specifically designed for efficient solid/ liquid separation. It utilizes recessed chamber filter plates that form a series of cavities or replacements for the hollow frames of the plate and frame design between them when clamped together.
Let’s discuss the recessed filter press, it's working, and its advantages in detail to better understand them.
Like all the other filter presses, recessed chamber filter presses work by using pressure filtration system technology. These presses have filter plates that hang on a steel frame, and the plates come in gasketed and non-gasketed designs. Gasketed filter plates help eliminate leaks, while non-gasketed plates make filter cloth installation faster as the cloths do not need to be pounded in.
The design of a recessed filter press is similar to that of a plate and frame press, wherein plates hang on a steel frame. The frames act as a clamping device, and both the presses utilize a hydraulic cylinder and pump to open and close the press. Each plate features a recessed area, and when the plates are pushed together; they form a chamber in which solids collect on filter cloths.
Working Principle of Recessed Chamber Filter Press
A hydraulic power pack in a filter press machine controls the cylinders that help move the plates. It is self-contained and mainly consists of components such as a reservoir, motor, and hydraulic pump. It transfers power from one location to another using fluid.
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