filterpress's blog

Filter press Operation and Maintenance Qualified Staff Requirements

Filter  press Qualified Staff Requirements

 

Casualties and property loss may be raised in case that equipment is operated by unqualified staff, safety instructions are not followed or some associations are unduly installed to this equipment. Hence the equipment should be operated by qualified person.

 

The qualified staff specified herein or in other documents is defined as:

Having a full knowledge of safety concept of automatic controlling technology(planning engineer);

 

More information for this article please visit this link: http://www.leofilterpress.com/filter_press/?331.html

filter press Usual Operation and Maintenance Instructions-Part1

 

 

Avoid operation mode that may containing potential dangers to filter press operators

 

Check and make sure the filter press/the whole filter press systemis operated under safe working sequence.

 

Only when all the safeguards and security devices (e.g. the movable preventing guard, emergency breakers and fenders) are installed at the right place and function well can the filter press be started.

 

It’s recommended to wear protective goggles in the pressure areas during feeding and filtering.

 

Check filter press once at least after each work shift, to see if there’s any hidden trouble or danger. Any kind of change (including the equipment/system performance) should be reported to the relative personnel and department.

More information,pleaes visit Leo filter press’s website link: http://www.leofilterpress.com/filter_press/?330.html

Instructions for filter press Plan and Erection

As filter press is probably one part of a whole system or factory, the safety rules given herein is only applicable to the filter press in the factory.

 

The following factors should be highly regarded:

Abide by the safety instructions, even if taking the maximum safety factors in production equipment designing and planning. The safety devices efficiency will be decreased greatly or even result in dangers if the safety devices adopt wrong design.

More information for this article, please visit: http://www.leofilterpress.com/filter_press/?329.html

Plunger pump repair

 

In order to guarantee normal operation of plunger pump, Leo filter press ask every plunger pump users to take down the following items:

a. Please use clean hydraulic oil, please filter hydraulic oil every month and change hydraulic oil every three months

b. Pump should not be stared or work if no cooling water feeding into the pump, in order to prevent ceramic plunger breakage and rubber gasket damage due to overheat or overcool suddenly. Besides ,the cooling water also can be used in ceramic cleaning to prolong plunger and gasket service time

More information for the plunger pump please visit: http://www.leofilterpress.com/filter_press/?311.html

 

Plunger Pump Installation and Operation Instructions

 

Plunger pump installation instructions
Put the plunger pump on the foundation bed, measure horizontal adjustment, fasten plunger pump stand with anchor bolts(or not) in order to replace hydraulic oil and clean slurry feeding pipings, pump should be raise for 10cm higher than the ground, drainage for filtrate should be arranged around the pump foundation.

Full text reading please click this link: http://www.leofilterpress.com/filter_press/?295.html

Filter Press Plan and Erection

 

As filter press is probably one part of a whole system or factory, the safety rules given herein is only applicable to the filter press in the factory.

 

The following factors should be highly regarded:

Abide by the safety instructions, even if taking the maximum safety factors in production equipment designing and planning. The safety devices efficiency will be decreased greatly or even result in dangers if the safety devices adopt wrong design.

 

The following items should be checked upon the actual site situations when erecting and commissioning filter press

 

For full text: http://www.leofilterpress.com/filter_press/?329.html

Filter Press Using Report Filter Cake Moisture content

Filter Press Using Report Filter Cake Moisture content

The problem the beverage producers then faced was how to dewater the sludge that was created.  Various alternatives, such as sludge drying beds, belt filter presses and recessed chamber presses were considered.  Representative samples of the sludge were created by simulating the chemical treatment of several hundred gallons of typical wastewater.  These samples were sent to the Leo Filter Press’s lab, in China The oil and grease content in the sludge inhibited effective dewatering, but the combination of pH control and a high molecular weight polymer created good flocculation of solids and effective dewatering was possible.

Based on these results, those beverage producers elected to purchase several recessed chamber filter presses to dewater the sludge generated by the chemical treatment of their average wastewater flow of 750,000 gpd. The technicians at Siemens Water Technologies worked closely with beverage producer operating personnel doing on-site test work with full automatic PLC control.

More information please visit: http://www.filterpress.cc/Html/?393.html

Filter Press Operation

 

 

Filter Press Operation

 

Plate and frame filter presses are used for wastewater dewatering by utilizing pressure (3-5 bar) to remove the solid from a suspension. They are particularly suited for low solids content (<2% solids), or solids composed of fines particles (-200 mesh), however they will essentially dewater a wide range of particle size distribution and various solid content slurries.Whe judging from a photo ,you can’t figure out immediately that it is a plate and frame type filter press, due to the same out-looking as chamber filter press .But when you look at the filter plate handles ,you will find the plate and frame filter press can be found out easily ,due to its special long-short couple-set filter plate handes.Always ,plate and frame filter press fed from corner or outside corner port,using a suitable pump for feeding,then, the feed material travels the path of least resistance (up bewteen the filter plates) which has filter media inserted between the filter plates/filter frames, and the chamber between the related filter plates is filled with build-up filter cakes, as the liquid passes through the filter media, and travels up to the outlet port at the top of the plate. This liquid is referred to as the "filtrate", and is discharged from the filter press. The solids remain in the chamber between the filter plates, until the filter plates discharge filter cakes manually.(standard filter plate shifting system designed for  plate and frame filter press is manual filter plate/frame shifting )

 

All the plate and frame filter presses are manufactured using our superior internally ported design. Internal feeding port design filter plate profits numbers of benefits over external porting. Internal feeding port design filter plates allow for a greater choice of filter media in a wide range of material and thickness, including pads, filter paper and filter cloth. In an internally feeding port design filter press the filter media itself works as the gasket, eliminating additional leakage. Without changing gaskets,less operating time, cost and labor. Plate and frame filter presses with internal ports are also inherently more sanitary since there can be no cross-contamination of O-rings during filtering from batch to batch due to product holdup.

Full text reading this article please visit Leo Filter Press Site.

Filter Press Filtering Part Instructions for Filter Press Users (Chamber Filter Plate,Membrane Filter Plate and Filter Cloth)

Filter Press Filtering Part Instructions for Filter Press Users (Chamber Filter Plate,Membrane Filter Plate and Filter Cloth)

Tips for Leo Filter Press users: no membrane plate models are without squeezing function

Filtering parts consist of filter plate, membrane plate and filter cloth. The membrane plate is a body plate covered by membranes at both sides The filter plates, membrane plates and filter cloth are orderly-arranged on the side bars, which forms every single filter chambers one by one.At first, slurry is pumped into the each filter chambers by a feeding pump through the feeding hole which in generally is in the middle of the thrust plate. The filtration is carried out by the pressure produced by the feeding pump. The solid content in the slurry will remain in the filter chamber to form filter cake on the filter cloth .The filtrate will be discharged through water faucet (open discharge) or filtrate valve (closed discharge).If the filter cakes need to be washed, pump washing water through the washing hole which is also on the thrust plate. Similarly, if you want to get filter cakes with lower moisture content, feed in compressed air through the washing hole of the thrust plate to bring away part of water in them (applicable for Uk Model). For membrane filter press, you can let in compressed air to inflate membranes and squeeze all of the filter cakes, which will decrease the moisture content of cakes greatly.(Please visit our website : www.leofilterpress.com to get full information about the membrane squeezing working principle .) for more information for this article please browse this link for full text reading: Filter Press Filtering Part Instructions for Filter Press Users (Chamber Filter Plate,Membrane Filter Plate and Filter Cloth)

Filter Press Development History and Filter Press Sorts

Being a filtering equipment,filter press was invented,but until now,filter press still keeps its original appearance. In many industries, still manually closing,releasing,discharge filter cakes and clean filter press with long working time and high working intensity.But after world war II, Science developed quickly, automatic technology come into use,then high working efficiency and bigger capacity equipment were invented out to help operators’s daily work,filter press industry developed to automatic working,especially in the past two decades, filter press developed very fast, when many countries paid more and more attention to environment protection,various kinds of filter presses were invented and become used in such as chemical, mining,food,medicion, synthetic fiber,wastewater filtration etc.

Filter press sort

Divide according to installation style: horizontal filter press ,vertical filter press

Divide according to filtrate discharge method: closed discharge filter press, open discharge filter press

Divide according to structure design:plate and frame filter press,chamber filter press

Divide according to filter cloth installation method: filter cloth fasten filter press,filter press travel filter press(single filter cloth traveling type and continuous filter cloth travelling type)

 

Divide according to open and closing method: mechanical filter press and hydraulic filter press

Divide according to squeezing system:membrane filter press,chamber filter press

Divide according to filter press controlling method:Mechanical control type fitler press,hydraulic control filter press and automatic control filter press

 

Sometimes according to different material characteristics and industries’different requirements,many special designed filter presses were invented to service different filtering conditions