Basic introduction: frame press filter is divided into two types: box filter press and plate frame press filter.

Component: the frame press filter consists of three parts:

1: Frame: frame is the basic component of the press filter, both ends of the thrust plate and compression head, the two sides of both sides of the beam attached to the rigid, the beam used to support the filter plate, filter frame and compression plate. To meet the needs of high sanitation or corrosion protection, the rack needs to be packed with stainless steel.

A, thrust plate: it is connected with a base end of the filter press is located in the ground, presses the thrust plate is in the middle of the feeding hole, four corners and four holes on the two hole is washing liquid or crushed gas imports under 16.20 for export (undercurrent structure or filtrate outlet)

B: compression plate: used to press the filter plate filter frame, both sides of the roller used to support the pressure plate, in the beam on the track rolling.

C: crossbeam: it is a load-bearing component. According to the requirements of environmental protection, it can be coated with rigid PVC, polypropylene, stainless steel coating or new anti-corrosion coating.

2, pressing mechanism: manual compression, mechanical compression, hydraulic compression.

A, manual compression: the spiral mechanical jack is used to push the compression plate, and the filter plate is pressed tightly.

B: mechanical compression: the pressing mechanism consists of motor (equipped with advanced overload protector), reducer, gear, screw rod and fixed nut. When the utility model is pressed, the motor is rotated to drive the reducer and the gear to rotate the screw rod in the fixed silk mother, and the pressing plate is pushed to compress the filter plate and the filter frame. When the pressure increases, the load current of the motor increases, when the current to the protector set value, maximum pressure, motor power off, stop running because of the screw rod and the fixed nut has reliable self-locking spiral angle, can reliably ensure the pressure tight state, in the process of the work is returned when the pressure, motor reversal, pressing board, pressing to switch back when the stop.

C, hydraulic pressure: hydraulic pressing mechanism consists of hydraulic station, hydraulic cylinder, piston, piston rod and the piston rod and the pressure plate connected havran card hydraulic station structure is composed of motor, pump, relief valve (pressure) valve, pressure gauge, oil tank. Hydraulic mechanical pressing, a hydraulic station for high pressure oil, the oil cylinder and the piston element cavity filled with oil, when the friction resistance is greater than the pressure plate operation when the pressing plate slowly pressed plate, when the pressure reaches the relief valve set pressure value (by pressure gauge pointer display), filter plate and the filter frame (frame type) or filter plate (Van) is pressed, the overflow valve to unload, then cut off the power supply, press finished back, reversing valve, the pressure oil into the cylinder rod chamber, when the oil pressure can overcome the friction press plate, the pressing plate began to return. Hydraulic press for automatic pressure, the pressing force is controlled by electric contact pressure gauge, pressure gauge pointer and pointer limit limit set in the numerical process requirements, when the pressing force cut off the power supply to achieve the upper limit, when the pump stop power supply, because the oil system may produce the internal leakage and leakage caused by the pressing force decreased, when reduced to the lower limit of the pressure gauge pointer when the power is switched on, start oil pump, cut off the power supply, the pump pressure reaches the upper limit, stop feeding, pressing force to achieve this cycle to ensure the filter materials in the process of effect.

3. Filtering mechanism: the filtering mechanism is composed of filter plate, filter frame, filter cloth and press diaphragm. The filter plate is coated with filter cloth on both sides. When the press diaphragm is arranged, a group of filter plates are composed of diaphragm plate and side plate. A rubber diaphragm or a polypropylene diaphragm is coated on both sides of the base plate of the diaphragm plate, and the filter cloth is coated outside the diaphragm, and the side plate is an ordinary filter plate. The material enters the filter chamber from the feed hole on the thrust plate, and the solid particle is trapped in the filter chamber because the particle diameter is larger than the pore diameter of the filter medium (filter cloth), and the filtrate flows out of the liquid outlet hole under the filter plate. The cake to dry, except for the diaphragm pressing, also with compressed air or steam into the washing from the mouth, the rush of air to the filter cake moisture, in order to reduce the moisture content of filter cake.

Previous article： Six steps of installation and debugging of press f Next article： Function and application of press filter