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Operation of the Press is begun through a single “start” push button in central control panel.
We offer a wide range of filter presses with sidebar technology suitable for both standard and medium duty and for heavy-duty performance levels. Maximum flexibility is provided by choosing between simple manual to fully automated filter press designs. NMP filter presses are upgradable in terms of modules and features and can be customized to your specific needs and requirements. For the perfect dewatering of tailings, our filter presses are therefore stateo f the art in terms of technology and economy.
Benefits Of Fully Automatic Filter Presses
Filter Press is equipped with Pull Back type Double Acting Hydraulic Cylinder dully honed from inside & dully coupled with moving end head, which Brings Moving Plate Forward ‐Reverse hydraulically. A hydraulic system uses oil to power an actuating cylinder piston. This component is moved to achieve a specific task. A double acting cylinder uses two lines and gives you the full power of your hydraulic system in both directions.
Plate shifter mechanism is used to transport the filter plates. It gradually Shifts plate one by one in Auto Mode & through Hand Held Remote Control in Manual modeand allows the emptying of the filter press. This process can be paused anytime and the operator can remove possible impurities from the cloth.Thismechanism pulls open the individual plate, the cake formed between the plates generally falls down by gravity. Generally used for faster filter cake discharge. Speed of the plate shifter can be adjusted in filter press.
Drip Tray is installed under filter plates, and make up of liquid collecting tray.The drip tray can be opened and closed by the help of hydraulic cylinders, which are controlled from the panel manually or automatically through PLC. It ensures that the drip trays are in open position for cake discharge and in closed position during filtration. So that it collects the filtrate and keep it away from containers or the conveyor system.
This device is installed in the upper part of filter press. It’s made up of washing rail, washing frame, washing frame driving travel device, inlet pipe, towing chain, washing pipe, nozzles, washing pipe lifting device, reducing motors etc. It can finish cloth washing in co-operation with plate shifting device under the control of PLC.This system makes it possible to wash the cake residues off the cloth using water under pressure. Washing is performed simultaneously on both sides of the plate.
When it doesn’t work, the device is placed behind the pressing plate, and when it works, after discharging all cakes, pressing plate will compact and release all filter plates, then retreat to the required position. The plate shifting device will move forward and enter into plate taking state under ....
The hydraulic power packs are used to control the cylinders which move the plates. It is a self-contained unit that consists mainly of a motor, a reservoir andhydraulic pump, using fluid to transmit power from one location to another. Hydraulic power packs can generate massive amounts of power which can be used to drive hydraulic Filter Press. Our Hydraulic power pack units are designed for low noise, vibration free with excellent heat dissipation properties.
We have designed and created hydraulic power packs composed of:
Electric hydraulics are controlled by the NMP Electric Hydraulic Control System (EHCS), which monitors the status of the system and provides an emergency stop push button, which disconnects switch and touch screen control of the filter press hydraulics. Touch screen with very good resolution can provide all diagnosed information of the Filter Press and also allows adjusting the Filter Press process control.
The filter press is equipped with Air operated Pneumatic Actuators for automatic opening and closing of the valves for slurry inlet and filtrate outlet. The actuator valve operates in auto mode i.e., Feeding, Washing, and Airing Process.
Filter press pump selection is based on a various numbers of criteria’s, characteristic of liquid, temperature, acidity, viscosity and required pressure are some of them.
The feed pump controls and feeds the slurry/feed in to the Filter press. Flow meter can be used in order to obtain the optimum filling level of the filter press.The feed pump usually increases up to 6 – 15 bar, the flow is controlled by a pressure switch, or a frequency (FM). Types Feed pumps used for Filter Press are Screw pump, Centrifugal pump and AOD pump. The type of pump and the material used depend on the character and properties of the pumped suspension.
The dropping cake can be conveyed via the hopper to a conveyor, which usually transports the cake to a container.
The container does not have to be installed directly under the filter press, but it can be outside the building, or in another room, which is easily accessible for Lorries transporting the containers.
After filtration, a liquid suspension remains in the turbidity channel; it can be removed and reliably transported back to the storage tank in order to prevent blockages and rehydration of the discharged cake when the filter press is open. After feeding is completed, operators can remove this sediment by rinsing the core. The rinse medium, mostly water, flows through the turbidity channel and absorbs the solids deposited there.
