Views:0 Author:Site Editor Publish Time: 2020-04-16 Origin:Site
The structure and working principle of the box filter press are similar to the plate and frame filter press, except that the filter plate is recessed on both sides, and each two filter plates are combined into a box filter chamber, eliminating the filter frame, and there is a filter center The round-hole suspension thus flows into each filter chamber. This filter is suitable for suspensions that need to be filtered at a higher pressure and the filter residue does not require washing.
Folding vertical filter press
The filter plates of the vertical filter press are stacked horizontally and vertically to form a group of filter chambers, which occupy a small area. It uses a continuous filter belt. After the filtration is completed, the filter belt is moved to remove slag and clean the filter belt, and the operation is automated. The filter press has a wide range of application and a simple structure. The pressing and pulling of the plate and frame, slag removal and cleaning of the filter cloth can be automated, which is conducive to the large-scale development of the filter press. After the elastic rubber diaphragm is added to the filter chamber of the filter press, the filter residue can be compressed by the rubber diaphragm with high-pressure water or compressed air at the end of the filtration, so that the filter residue can be further pressed and deliquored, forming a diaphragm with a variable filter volume and compressed filter residue Press filter, its pressure can reach 1 ~ 2 MPa.
Folding belt filter press
Belt filter presses are widely used for sludge dewatering in industries such as urban sewage treatment, chemical industry, oil refining, metallurgy, papermaking, leather making, food, coal washing, printing and dyeing, etc. The machine operates continuously, with high degree of automation, energy saving, high efficiency, maintenance Convenient, ideal equipment for sludge dewatering.
The hydraulic pressing mechanism of the filter press is composed of a hydraulic station, an oil cylinder, a piston, a piston rod, and a Havran card hydraulic station connected to the pressing plate with a motor, an oil pump, and an overflow valve (adjusting pressure). Check valve, pressure gauge, oil circuit, oil tank.
Filtration method: The flow of filtrate is divided into clear flow filtration and underflow filtration. For open flow filtration, a water nozzle is installed on the lower outlet of each filter plate, and the filtrate flows out intuitively from the water nozzle. For underflow filtration, a liquid discharge channel hole is provided under each filter plate, and the liquid discharge holes of several filter plates are connected into a liquid discharge channel, which is discharged by a pipe connected with the liquid discharge holes below the thrust plate.
Washing method: when the filter cake needs to be washed, there are sometimes unidirectional washing and bidirectional washing, undercurrent unidirectional washing and bidirectional washing.