Filter Press Pressure Control

- Apr 22, 2019-

Filter press generally by the head board, tail plate, Filter Press filter plate, hydraulic cylinder, the main beam, drive and pull the device and other components. The hydraulic cylinder piston pushes the head plate so that the filter plate presses the adjacent filter plate to form the filter chamber. The mud is fed into the filter chamber by the mud pump, and the water is discharged through the drain through the filter cloth. Filter Press The solid mud forms the filter cake in the filter chamber. When the mud is filled with the filter chamber, use the high pressure pump to continue the pressure filtration of the mud, so that the solid solution in the filter chamber separation.

Operate the hydraulic system so that the tail plate moves toward the head plate and press the entire filter plate between the head plate and the tail plate. Thus, a hollow sealed filter chamber is formed between adjacent filter plates.

The feed pump feeds the mud from the feed port of the tail plate into the filter chamber. Filter Press When the filter chamber is filled with mud, the filtration process begins and the mud is solid-liquid separated by the pressure of the feed pump.

In the early stage of the filter press, the thickness of the filter cake in the filter chamber is small, the resistance of the filter cake is small, the dehydration speed is fast, Filter Press usually at this time with low head, large flow pump. As the cake thickness increases, the resistance increases, Filter Press the filter press rate decreases, at this time the application of high-lift small flow of the pump. The time required for the filtration process is determined according to the filtration characteristics and process requirements of the slurry. Filter Press When the specified filter press time is reached, the feeding is stopped and the filtration process is completed.

The main factor that affects the filter effect of the filter press is the control of the pressure. It is well known that the main working principle of the filter press is to realize the filtering function through the control and regulation of the pressure. Therefore, Filter Press whether the pressure system is directly related to the filtering effect Good or bad.

 Another factor that affects the performance of the filter press is the speed of filtration, and now many manufacturers are blindly pursuing the speed of product filtration and ignore the essence of filtration, in fact, according to the liquid concentration and resistance and other factors to consider and appropriate Allocate the speed of use of the machine, which is designed before the designer needs to design their own good.

 The factors that affect the filter effect of the filter are also the area of the filter. As we all know, the larger the area of the filter, Filter Press the faster the flow through the object will be, and the more the residue will be taken, the worse the filtering effect will be, Of course, Filter Press the same kind of density between the specifications is a large area as a small area of the filter, but for the mesh area of different products above this comparison method is not applicable.

Construction: The main body of the dewatering machine is a filter device which is formed by the fixed ring and the swimming ring, and the spiral shaft is formed through the filter unit, Filter Press and the front section is the concentrated part and the latter part is the dehydration part. The filter formed between the fixed ring and the swimming ring The pitch of the seam and the screw shaft is gradually reduced from the concentration portion to the dehydration portion. Rotation of the screw shaft in the promotion of sludge from the condensate to the Department of dehydration at the same time, but also continue to drive the swimming ring cleaning filter to prevent clogging.

1, the concentration: When the spiral drive shaft rotation, Filter Press located in the drive shaft outside the multi-solid laminated stack relative movement, under the action of gravity, the water from the relative movement of the laminated gap filter to achieve rapid concentration.

2, dehydration: the concentration of sludge along with the rotation of the screw shaft continue to move forward; along the direction of the export of the cake, the screw shaft pitch gradually smaller, Filter Press ring and ring between the gap is gradually smaller, the spiral cavity volume The pressure in the sludge is squeezed and discharged, and the solid content of the cake is continuously increased, and finally the sludge is finally realized. Continuous dehydration.

3, self-cleaning: the rotation of the screw shaft to promote the continuous rotation of the swimming ring, the device relies on the movement between the fixed ring and the swimming ring to achieve a continuous self-cleaning process, which cleverly avoid the conventional dewatering machine common problems.