The structure of the
Filter Press consists of three parts:
folding rack
The frame is the basic component of the filter press, with thrust plates and pressure heads at both ends. The two are connected by girders on both sides. The girders are used to support the filter plate, filter frame and compression plate. To meet advanced hygiene requirements, the racks need to be covered in stainless steel. Stainless steel cladding technology can be used as a reference, and its quality can meet the needs of European customers.
A. Thrust plate: Connect to the bracket and place one end of the filter press on the foundation. The middle part of the thrust plate of the chamber filter press is the feed
There are four holes in the four corners. The holes in the upper two corners are the inlets for the washing liquid or pressurized gas, and the two lower corners are the outlets (underflow structure or filtrate outlet).
b. Compression plate: used to compress the filter plate and filter frame. The rollers on both sides are used to support the compression plate rolling on the girder track.
C. Beam: It is a load-bearing component. According to the anti-corrosion requirements of the use environment, hard polyvinyl chloride, polypropylene, stainless steel coating or new anti-corrosion coating can be applied.
folding mechanism
Manual pressing, mechanical pressing, hydraulic pressing.
A. Manual compression: Use a screw mechanical jack to push the compression plate to compress the filter plate.
B. Mechanical compression: The compression mechanism consists of a motor (equipped with an advanced overload protector), a reducer, a gear pair, a screw and a retainer.
Composed of nuts. During compression, the motor rotates forward, driving the reducer and gear set, causing the screw rod to rotate in the fixed nut, pushing the compression plate, and compressing the filter plate and filter frame. As the pressing force becomes larger and larger, the load current of the motor increases. When the current value set by the protector is reached and the maximum pressing force is reached, the motor cuts off the power supply and stops rotating. Since the screw rod and the fixed nut have a reliable self-locking helix angle, they can reliably ensure the compression state during the working process. When retracting, the motor reverses. When the pressure block on the pressure plate hits the travel switch, the retraction stops.
C. Hydraulic compression: The hydraulic compression mechanism consists of a hydraulic station, a cylinder, a piston, a piston rod, and a connection between the piston rod and the compression plate.
The plate and frame filter press has relatively high requirements for the feed pump, which are specifically reflected in the following aspects:
1. Feeding stage. At this stage, the plate and frame filter press requires the feed pump to provide a continuously rising pressure. The main reason is that at this stage, the material inside the filter press will gradually increase. If the pressure increases too slowly or too fast, , will affect the working effect of the filter press
After the feed pump is started, its operating flow rate is relatively large, but after the pressure increases, the flow rate will gradually decrease. Generally speaking, during the feeding stage, the feeding pump will always maintain a large flow rate, and the radial load borne by its internal parts is relatively high, which puts forward steep requirements for the feeding pump characteristic curve to avoid inconsistencies with the design working conditions. problems arise, thereby ensuring the safety of all parts of the feed pump. At the same time, the feed pump must have significant cavitation performance and be able to operate effectively under special working conditions with large flow rates.
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