Program-Controlled Automatic Filter Press

Overview of filter press:

Filter press is an industrial equipment specially used for separating solid and liquid. The machine can be equipped with multi-layer filter plates. After the adjacent filter plates are equipped with filter media, a filter chamber is formed in the middle. Different filter chambers are connected. In the compressed and closed state, each filter plate injects the slurry to be separated from the feed inlet through the feed pump, and the slurry fills each filter chamber of the filter press. The liquid permeable filter medium (usually filter…

Overview of filter press :

Filter press is an industrial equipment specially used for separating solid and liquid. The machine can be equipped with multi-layer filter plates. After the adjacent filter plates are equipped with filter media, a filter chamber is formed in the middle. Different filter chambers are connected. In the compressed and closed state, each filter plate injects the slurry to be separated from the feed inlet through the feed pump, and the slurry fills each filter chamber of the filter press. The liquid permeable filter medium (usually filter cloth, filter paper plate, etc.) flows out through the liquid outlet, and the solid is intercepted by the filter medium in the filter chamber to form a filter cake, The filter chamber can be easily opened to remove the filtered solids (i.e. filter cake), and the filter medium can be easily cleaned or replaced.

Filter press is a solid-liquid separation equipment for intermittent filtration, but its performance is stable and reliable, especially when the ratio of residual liquid in solid is very low. In the process of wide application of filter press, the final choice between separated solid and liquid varies greatly in different industries. Some are to obtain higher purity solid, or dissolve the content in the liquid after solid-liquid mixing, and then separate it after solid-liquid separation, some are to reuse the water in the mixture, and others have application requirements for separated solid and liquid, etc, Filter press is a good choice.

  • Structure of filter press
  • Development history
  • Type of filter press

The filter press is composed of frame, filter plate, pressing system (manual, mechanical, hydraulic and other types) and electrical control system. The frame part plays the role of supporting the pressing device and filter plate, and is composed of base, pressing plate, thrust plate and main beam. The filter plate is installed on the main beam between the compression plate and the thrust plate, and filter media such as filter cloth are installed in the middle of the filter plate.

The filter press is composed of frame, filter plate, pressing system (manual, mechanical, hydraulic and other types) and electrical control system. The frame part plays the role of supporting the pressing device and filter plate, and is composed of base, pressing plate, thrust plate and main beam. The filter plate is installed on the main beam

The filter press is composed of frame, filter plate, pressing system (manual, mechanical, hydraulic and other types) and electrical control system. The frame part plays the role of supporting the pressing The filter press is composed of frame, filter plate, pressing system (manual, mechanical, hydraulic and other types) and electrical control system. The frame part plays the role of supporting the pressing device and filter plate, and is composed of base, pressing plate, thrust plate and main beam. The filter plate is installed on the main beam

Application of filter press :

Filter presses have a variety of applications, from pulp dewatering to plasma purification. At the same time, filter press technology is widely used in ultra-fine coal dehydration and filtrate recovery in coal preparation plants. The industrial applications of automatic diaphragm filter press include dewatering of municipal sewage sludge, recovery of ready mixed concrete water and recovery of metal concentrate. Box filter press is widely used in saccharification operation because it provides very high efficiency and reliability. It is popular in maple syrup production in Canada and sugar beet and sugarcane production in countries such as Pakistan and Indonesia.

Filter press is also widely used in food, beverage, wine making, medicine, oil, chemical industry, papermaking, printing and dyeing, coating, electroplating, ceramics, leather and industrial sewage treatment.

  • Filter plate material
  • Filter media
  • Pretreatment

Currently, the filter plate of filter press is made of polymer or polymer coated steel. According to the needs, the filter plate can also choose cast iron or stainless steel materials, which provide a good drainage surface for the filter cloth. The size range of the filter plate is 250 ×250 mm to 2.0 × 2.0 meters, and larger or smaller sizes are available.

Filter press usually uses filter cloth as filter medium, which is made of polypropylene filter cloth, non-woven fabric, cotton cloth, etc. filter paper board, cotton pulp board or filter membrane can also be used as filter medium as required. Generally, the cake thickness of plate and frame filter press can reach 50 mm, but in extreme cases, it can be increased to 200 mm. The box filter press (concave filter press) can form a filter cake with a thickness of 30-40mm.

Before using the filter press for filtration, if the solid suspension has precipitated, the mixed liquid needs to be pretreated, which can improve the performance of the filter press because it increases the porosity of the filter cake, thus speeding up the filtration speed. The size of floc can be controlled by changing temperature, concentration and pH value. In addition, if the filter cake is impermeable and not conducive to the flow of filtrate, filter aids can be added in the pretreatment process to increase the porosity of the filter cake, reduce the resistance of the filter cake and obtain a thicker filter cake. However, the filter aid needs to be able to be removed from the filter cake by physical or chemical treatment. A common filter aid is diatomite, with a porosity of 0.85.

Optional automatic device of filter press :

Automatic rapping device, quick opening unloading device, automatic warping of filter cloth, automatic cleaning device of filter cloth, automatic bomb door, filter cake conveyor, mud storage bucket, etc.

Available supporting units of filter press system :

Feed pump, cleaning pump, mixing drum, pipeline and valve, air compressor, air storage tank, etc.

Program-Controlled Automatic Filter Press :

Type Filter area(m2) Filter plate size(mm) Filter cake thickness(mm) Filter chamber volume(L) Filter plate number (PCS) Filtrating pressure(Mpa) Motor power(KW) Machine Dimension(mm)(LxWxH)
XZ30/870-30U 30 870x870 30 460 23 0.6 2.2 3180x1200x1300
XZ40/870-30U 40 595 30 3570x1200x1300
XZ50/870-30U 50 748 38 4110x1200x1300
XZ60/870-30U 60 902 46 4550x1200x1300
XZ70/870-30U 70 1056 54 4990x1200x1300
XZ80/870-30U 80 1210 62 5430x1200x1300
XZ50/1000-30U 50 1000x1000 752 28 0.6 4 4040x1500x1400
XZ60/1000-30U 60 914 34 4460x1500x1400
XZ70/1000-30U 70 1063 40 4760x1500x1400
XZ80/1000-30U 80 1219 46 5120x1500x1400
XZ100/1000-30U 100 1505 57 5780x1500x1400
XZ120/1000-30U 120 1816 69 6500x1500x1400
XZ100/1250-30U 100 1250x1250 1479 36 0.6 4 5020x1800x1600
XZ120/1250-30U 120 1777 43 5470x1800x1600
XZ140/1250-30U 140 2094 51 5990x1800x1600
XZ160/1250-30U 160 2381 58 6450x1800x1600
XZ180/1250-30U 180 2669 65 6905x1800x1600
XZ200/1250-30U 200 2965 72 7360x1800x1600
XZ220/1250-30U 220 3285 80 7880x1800x1600
XZ250/1250-30U 250 3737 91 8600x1800x1600
XZ200/1500-30U 200 1500x1500 3025 49 0.6 7.5 6400x2200x1900
XZ250/1500-30U 250 3739 61 7225x2200x1900
XZ300/1500-30U 300 4413 74 8130x2200x1900
XZ350/1500-30U 350 5210 86 8570x2200x1900
XZ400/1500-30U 400 6007 99 9880x2200x1900
XZ450/1500-30U 450 6743 111 10820x2200x1900
XZ500/1500-30U 500 7478 123 11560x2200x1900
XZ600/2000-30U 600 2000x2000 40 12000 85 0.6 7.5 11100x3000x2500
XZ700/2000-30U 700 14000 99 12200x3000x2500
XZ800/2000-30U 800 16000 107 13350x3000x2500
XZ900/2000-30U 900 18000 127 14500x3000x2500
XZ1000/2000-30U 1000 20000 141 15600x3000x2500

Optional Choice:

Item

Name

Description

Pictures for reference

1

Automatic cloth cleaning system

It’s installed above the main beam of the filter press. It automatically moves as high pressure water (up to 10Mpa) sprayed out to wash the filter cloths. There are two types: single-sided and double-sided washing. The double type has brush which has better cleaning effect.

2

Automatic bomb door system

For collecting the liquid leakage from the filter cloth and filter plates, to avoid pollution and contamination of the worksite. It also prevents the filter cake from getting wet.

3

Automatic vibrating system

This device makes the cake fall off from the filter cloth easier. It is suitable for the viscous material that is difficult to fall off automatically.

4

Quick open plate system

Belong to the auxiliary discharging filter cake function. A chain is used to link all the filter plates together, so that you can open several pieces of plates at one time. It saves time, reduces labor and improves efficiency.

5

Sludge storage bucket

For easy collection of the unloaded filter cake after the separation, and convenient transportation of the cake.There are two open modes: electric type and pneumatic type.

6

Belt conveyor

Used to transport the discharged filter cake. This device is suitable for field-based work. You can put the material on the belt and it will be delivered to the designated place, reducing the labor intensity.

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