Hydraulic Diaphragm Box Plate And Frame Filter Press

1. The structure of the Hydraulic Diaphragm Box Plate And Frame Filter Press is different. The filter chamber of the plate and frame filter press is made of two kinds of filter plates staggered, a solid filter plate and a frame filter plate. The diaphragm filter press uses two different filter plates, one solid filter plate and the other hollow filter plate. The frame filter plate is like four enclosures, and the hollow filter plate is cast by two layers, forming a large gap in the middle of the filter plate, that is, the hollow filter plate.
2. The formation of the filter cavity is different. The filter chamber of the plate and frame filter press requires two solid filter plates and a frame filter plate, and the diaphragm filter press is composed of a solid filter plate and a hollow filter plate.

3. The filter cloth style is different. The diaphragm filter press is formed by two layers of filter cloth in the middle to form a filter unit. The plate and frame filter press filter cloth is a square filter cloth with a completely different shape from the previous two types of equipment. The filter cloth of the diaphragm filter press adopts the wrapping method, and one of the two layers passes through the small hole in the middle of the filter plate and then unfolds it flatly to wrap the filter plate. The plate and frame filter press can be placed directly between the filter plates.
4. The filter plate used in the diaphragm filter press is double-sided with a diaphragm cavity. The interval arrangement between the diaphragm filter plate and the homomorphic filter plate constitutes a certain volume of filter chamber.
After the material filtration is completed, a certain pressure of gas (liquid) is injected into the diaphragm cavity, so that the diaphragm bulges and rotates the filter cake in the opposite direction, thereby reducing the moisture content of the filter cake. In contrast to the filter plates of frame presses, the diaphragm filter plate has two filter surfaces that can be moved back and forth: the diaphragm. When a press medium (e.g. compressed air) is introduced behind the diaphragm, these movable diaphragms bulge out in the direction of the filter chamber, i.e. the filter cake is again high-pressure extruded at the end of the filtration process. Using the diaphragm filtration process, the moisture of the filter cake can be reduced by 10-40% compared to ordinary filter plates. It can save a lot of follow-up costs. When washing the filter cake, the diaphragm can be pressed to achieve less washing water and better results.

As a solid-liquid separation equipment, the filter press has been used in industrial production for a long time, it has good separation effect, wide adaptability, especially for the separation of viscous materials, has its unique advantages. Filter press is a kind of intermittent solid-liquid separation equipment, which adopts mechanical and electrical integration design and manufacturing, reasonable structure, simple and convenient operation; It can realize various processes such as filter plate pressing, pressure holding, and moving plate loosening. It is composed of a moving chamber of chamber plates, filter frame plates or a box plate arrangement, and under the pressure of the feed pump, the slurry is sent to the filter chamber, and the solid and liquid are separated by the filter medium. Widely used in chemical, dyes, petroleum, ceramics, pharmaceutical, sugar, food, starch, sugar, paint, metallurgy and sewage treatment in various industries. The product specifications are: 320~2000 type, the filtration area is: 1 m2~~1060 m2, and the structure of the filter plate is plate and frame type, box type; Heat-resistant temperature -10-100 °C, filtrate outflow methods include open flow, dark flow, open flow external pipeline, washable, non-washable, external pipeline washing; The pressing method is hydraulic pressing. The over-moving pressure is from 0.2-1.2MPa, and the material of the filter plate is cast iron, reinforced polypropylene, stainless steel, high-quality synthetic rubber, etc. Electrical components adopt manufacturer products, and the control part is more sensitive and safe; The pressing plate, thrust plate and base of the frame part are welded by high-quality steel plate, and all welded parts are shot blasted, which not only eliminates the welding stress but also enhances the paint adhesion, so that the strength and stability of the parts are better, corrosion resistance and long service life; It is the ideal equipment for the current filtration industry.