Plate & Frame Filter Press Apparatus MODEL FM 74
Plate & Frame Filter Press Apparatus MODEL FM 74
‘Sci-tech Plate and Frame Filter Press Apparatus Model FM 74 is used in the beverage industry, for example, to clarify intermediate products.
A suspension of diatomite and water (recommended) is prepared in a tank. A pump ensures that the solid remains suspended and does not settle. The pump delivers the suspension into the individual separating chambers of the plate and frame filter press. A separating chamber is formed by one filter frame and two filter plates. The filter plates are grooved and covered over with filter cloths. The filtrate passes through the filter cloth and flows via the grooves in the plates into a collecting pipe. The filtrate exits the plate and frame filter press through the collecting pipe and is collected in the filtrate tank. The solid material is separated off at the filter cloth, where it forms a growing filter cake. As the filter cake becomes thicker, its flow resistance also increases. When the separating chamber is full, or a maximum pressure difference has been reached, the filtration process is ended. The plates and frames of the plate and frame filter press are pulled apart. The filter cake can be removed. For the next filtration the plates and frames must be pushed back together. A spindle is used to press them together. The press forces ensure that the suspension does not leak from the contact points between the plates and the frames, but is forced through the filter cloth.
The flow rate through the plate and frame filter press is adjusted by a valve. The pressure occurring during filtration is indicated on a manometer. The filtrate tank is scaled. This means a stopwatch can be used to measure the flow rate.
| Size: | 80cm x 70cm x 85cm (LxWxH) |
| Weight: | 45 kg |
Item Description
Features
- Separation of solids from suspensions with a plate and frame filter press
- Discontinuous cake filtration
- Practical experiments on a laboratory scale
Plate and frame filter presses are used in the beverage industry, for example, to clarify intermediate products.
A suspension of diatomite and water (recommended) is prepared in a tank. A pump ensures that the solid remains suspended and does not settle. The pump delivers the suspension into the individual separating chambers of the plate and frame filter press. A separating chamber is formed by one filter frame and two filter plates. The filter plates are grooved and covered over with filter cloths. The filtrate passes through the filter cloth and flows via the grooves in the plates into a collecting pipe. The filtrate exits the plate and frame filter press through the collecting pipe and is collected in the filtrate tank. The solid material is separated off at the filter cloth, where it forms a growing filter cake. As the filter cake becomes thicker, its flow resistance also increases. When the separating chamber is full, or a maximum pressure difference has been reached, the filtration process is ended. The plates and frames of the plate and frame filter press are pulled apart. The filter cake can be removed. For the next filtration the plates and frames must be pushed back together. A spindle is used to press them together. The press forces ensure that the suspension does not leak from the contact points between the plates and the frames, but is forced through the filter cloth.
The flow rate through the plate and frame filter press is adjusted by a valve. The pressure occurring during filtration is indicated on a manometer. The filtrate tank is scaled. This means a stopwatch can be used to measure the flow rate.
An optional Opacimeter allows the solid concentration of the filtrate to be determined.
A drying chamber is recommended for evaluation of the experiments.
Technical Specifications
Specifications
1. Plate and frame filter press for discontinuous cake filtration
2. HDPE tank to produce a suspension
3. Centrifugal pump to deliver the suspension to the plate and frame filter press
4. Plate and frame filter press with 10 opening separating chambers for removal of the filter cake
5. PMMA tank with level scale for filtrate
6. Adjustment of suspension flow rate by valve
7. Thermometer and manometer in inlet
8. Optional Portable Opacimeter to measure the solid concentration in the filtrate
Technical Specifications
Plate and frame filter press
filter area: approx. 0,72m2
working pressure: approx. 0,4…2,5bar
Centrifugal pump (submersible pump)
max. flow rate: 4,5m3/h
max. head: 45m
Tanks
suspension tank: 200L
filtrate: 20L
Measuring ranges
pressure: 0…4bar
temperature: 0…60°C
Optional: ‘Sci-Cal’ Computer Control Software & Interface
‘Sci-Cal’ software & hardware has been designed for use with more than 600 ‘Sci-tech’ trainers. ‘Sci-Cal’ comes in a module that can be fitted or mounted on the Sci-tech trainers very easily.
‘Sci-Cal’ box has 11 inches front HMI interactive panel, inside are i3 processor computer with it’s own hard drive & software processor with 16 to 32 analog and 16 to 32 digital signal data-loggers. The ‘Labview’ processes the input signal with in-built data and formulae to tabulate results for the Sci-tech trainers.
‘Sci-Cal’ box has HDMI output for connection to a projector or an electronic whiteboard or a monitor.
Experiments
Learning the fundamental principle and method of operation of a plate and frame filter press
Production of a suspension
Removal of the filter cake
Insertion of the filter cloth
Fundamentals of cake filtration
Darcy’s equation
Variation in time of filtrate quantity and solid concentration in filtrate
Mass of filter cake dependent on filtrate quantity
Mains Power
220 – 240V 1Ph, 50Hz
Model Number
FM 74
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