A machine that applies mechanical force to one side of the filter medium to achieve filtration. Commonly used are “chamber pressure filter” and “belt pressure filter”.
Chinese name filter press equipment Brief description mechanical force is applied to the side of the filter media. 5 types of components frame, pressing mechanism, filtering mechanism
1 Introduction
2 Components
Introduction Editorial Podcast
Machinery that applies mechanical force on one side of the filter media to achieve filtration. There are two types of filter press equipment commonly used: “chamber pressure filter” and “belt pressure filter”.
Filter press equipment is divided into chamber filter press equipment, plate and frame filter press equipment, belt filter press equipment, vertical filter press equipment, diaphragm press filter equipment, etc.
Components Editor Podcast
The structure of the filter press equipment consists of three parts.
The frame is the basic part of the filter press equipment. At both ends are the stopping plate and the pressing head, and the beams on both sides connect the two together. The beams are used to support the filter plate, the filter frame and the pressing plate. The beams are used to support the filter plate, the filter frame and the pressing plate. To meet the high level of hygiene, the frame needs to be clad in stainless steel. The stainless steel cladding technology of Hangzhou Günter can be used as a reference, and its quality can meet the needs of European customers.
A, thrust plate: it is connected with the support to situate one end of the filter press equipment on the foundation. The middle of the thrust plate of the chamber filter press equipment is the inlet hole, and there are four holes in the four corners, the holes in the upper two corners are the washing liquid or pressing gas inlet, and the lower two corners are the outlet (dark flow structure or filtrate outlet)
B. Pressing plate: used to press the filter plate and filter frame, the rollers on both sides are used to support the rolling of the pressing plate on the track of the beam.
C, beam: is a load-bearing member, according to the requirements of the use of environmental corrosion, can choose rigid PVC, polypropylene, stainless steel cladding or new anti-corrosion coating and other coating.
2、Pressing mechanism
Manual pressing, mechanical pressing, hydraulic pressing.
A、Manual pressing: the screw type mechanical jack is used to push the pressing plate to press the filter plate.
B. Mechanical pressing: The pressing mechanism consists of an electric motor (equipped with advanced overload protector), reducer, gear payment, screw and fixed nut. When pressing, the motor is turning, driving the reducer and gear payment, making the filament rod rotate in the fixed nut, pushing the pressing plate to press the filter plate and filter frame. When the pressing force becomes bigger and bigger, the motor load current increases, when it reaches the current value set by the protector, the maximum pressing force is reached, the motor cuts off the power supply and stops rotating, because the filament rod and the fixed filament mother have Filter Press a reliable self-locking spiral angle, it can reliably ensure the pressing state during the working process, when it is returned, the motor reverses, and when the pressure block on the pressing plate touches the travel switch, it is returned to stop.
C, hydraulic pressing: hydraulic pressing mechanism consists of a hydraulic station, oil cylinder, piston, piston rod and piston rod and pressing plate connected to the Havlan card hydraulic station structure consists of: motor, oil pump, relief valve (to adjust the pressure) reversing valve, pressure gauge, oil circuit, oil tank. When the hydraulic pressing machinery is pressed, the high pressure oil is supplied by the hydraulic station, the component cavity formed by the oil cylinder and piston is filled with oil, when the pressure is greater than the frictional resistance of the pressing plate running, the pressing plate slowly presses the filter plate, when the pressing force reaches the pressure value set by the relief valve (shown by the pointer of the pressure gauge), the filter plate, filter frame (plate and frame type) or filter plate (chamber type) is pressed, the relief valve starts to unload, at this time, the power supply to the motor is cut off and When the pressing action is completed, the reversing valve is reversed and the pressure oil enters the rod cavity of the cylinder, when the oil pressure can overcome the friction resistance of the pressing plate, the pressing plate starts to return. When the pressure reaches the upper limit of the pressure gauge, the power supply will be cut off and the oil pump will stop supplying power, as the internal and external leakage of the oil circuit system may cause the pressure to drop, when it reaches the lower limit of the pressure gauge, the power supply will be turned on and the oil pump will start supplying oil, the pressure will reach When the pressure reaches the upper limit, the power supply is cut off and the oil pump stops supplying oil, so that the cycle can achieve the effect of ensuring the pressing force in the process of filtering materials.
3、Filtering mechanism
The filtering mechanism is composed of filter plate, filter frame, filter cloth and pressing diaphragm, both sides of the filter plate are covered by filter cloth. The diaphragm plate is covered with rubber diaphragm on both sides of the substrate, the diaphragm is covered with filter cloth on the outside, and the side plate is the common filter plate. The solid particles are retained in the chamber because their particle size is larger than the pore size of the filter media (filter cloth), while the filtrate flows out from the outlet hole below the filter plate. When the filter cake needs to be dried, in addition to the diaphragm press, compressed air or steam can also be used, through the washing port, airflow to wash away the water in the filter cake, in order to reduce the water content of the filter cake.