Chamber Filter Press

The chamber filter press CFP or membrane filter press MFP serves to the filtration of solid-containing liquids, dewatering of trub or sludge or washing of the filter cake. Particularly good results are achieved by means of membrane plates which can, with compressed air from the inside, exert an additional pressure on the filter cake. The chamber filter press is generally used in the beverage and food industry and filters gently, for example, juice and wine.

The chamber filter press is available in the following versions:

  • optional equipment with membrane or chamber plates
  • optionally as Clean System for a hermetically sealed and aseptic filter
  • or with traditional pass-through cloths

Standard design of the filters CFP and MFP

  • cantilever filter frame made of stainless steel
  • optional equipment with membrane or chamber plates made of PP
  • complete with hose or piston pump for feeding
  • dry running protection and electrical switch automatic
  • pressure compensation containers and required fittings
  • manual or electrohydraulic pressing
  • for membrane plates, with compressed air connection

We construct for you the optimal press as required for the laboratory, technical school, production and operation.
The Clean System version CFP-C-non-drip stands for an outside clean, aseptic filter.

  • The filter plate has an O-ring edge seal, the filter pack seals hermetically so that a drip tray is not required.
  • The filter cloths are attached within the plate; the rubberised edge, usual for pass-through cloths, is omitted.
  • The filter remains outside clean and aseptic.
  • The filter plates are manufactured in the dimensions from format 470 and bigger.
  • Membrane plates ensure a 50 per cent time saving and a higher yield of the liquid in the filter cake
Type KFPNumber of chambers

Number of frames

Filter area appox. m2Camber capacity approx. lDimensions l x b x h mmWeight kg
470/I1093,4452200 x 890 x 1300450
470/II20196,8902450 x 890 x 1300535
470/III302910,21353300 x 890 x 1300620
470/IV403913,61803850 x 890 x 1300710
630/I1095,9802560 x 1060 x 1550945
630/II201911,81603130 x 1060 x 15501150
630/III302917,72403700 x 1060 x 15501325
630/IV403923,63204270 x 1060 x 15501500
630/V504929,54004840 x 1060 x 15501675
630/VI605935,44805410 x 1060 x 15501850
800/II2019213043055 x 1250 x 16002860
800/III302931,54563665 x 1250 x 16003095
800/IV4039426084325 x 1250 x 16003525
800/V504952,57604985 x 1250 x 16003970
800/VI6059639125645 x 1250 x 16004415
800/VII706973,510646305 x 1250 x 16004850
800/VIII80798412166965 x 1250 x 16005305
800/IX908995,513687505 x 1250 x 16005850
800/X1009910515208015 x 1250 x 16006305

 

Sludge dewatering and trub processing

The sludge or trub to be dewatered is pumped with a suitable pump (piston pump, hose pump, piston membrane pump etc.) into the chambers formed by frames or plates.
Suitable filter cloths ensure the separation of the undissolved constituents from the liquid. This sepa-ration process can be improved and accelerated by change in pressure or also by conditioning of flocculants resp. filter aids. A particular advantage is offered by the membrane plates which can, with compressed air from the inside, exert an additional pressure on the filter cake for the achievement of higher TS contents and a faster filtration cycle.

Liquids with lower solids content can be filtered. An additional dosing of filter aids is required when the solids to be removed have no inherent filtration effect and densify strongly.

From previously dewatered solids, by the addition of special solvents which can dissolve constituents contained therein, the substances to be extracted resp. which are undesired, are washed out. The plates resp. frames used for this purpose have special detergent ducts.

Two stable end covers in the format of the filter plates form together with support bars and traverse the filter frame which is made of steel and optionally clad with stainless steel or synthetic resin.

The filter pack consisting of chamber plates or frames with the cloths is compressed by hydraulic closure by hand or electromechanically.  Fittings and pipes are realised in materials suitable for the medium (stainless steel, plastics, in galvanised steel etc.).

Filter plates and frames are available in all common sizes (see table) and materials (cast steel, alu-minium cast, plastics, stainless steel etc.) with the required duct system depending on the task.

The feeding device is selected depending on pumpability and the required pressure conditions, whereas a full automation for all operations is possible (feeding, emptying, material transport, cleaning, washing process, pressing process, safety device).

a) with normal plates

The trub is pressed through the installed hose pump (1),  into the filter chamber formed by the filter plate with cloth (2).
Pressure vessels (3) with air cushions ensure the continuous course of the filtration after shutting down the pump at 10 bar.
At 8 bar, the pressure controller automatically turns the pump on again. The filtrate is discharged by the lower collecting duct (4). After a couple of hours of filtration time, the filter can be opened. Between the cloths, a solid cake has formed.

b) with membrane plates
(every 2nd plate is a MP)

Initially, the filter works like with normal plates. Already a short time after the chambers are filled, the membrane plates are fed with compressed air and residual liquid is pressed out. The filter cake is dry in shortest time and can be removed. The filtration time is reduced to a part of the normal time. The complete process can be controlled fully automatically.

The filter is used like a sheet kieselguhr filter. The pump (inflow centrally) (5) is not used. Instead, a separate pump and a kieselguhr dosing unit are upstream. The aggradation takes place directly on the filter cloths. The filtrate is drained by the upper collecting duct (6).
In case of use of membrane plates, the cake can be re-pressed and removed in a dry state.