Professional manufacture factory for waste incinerator, sewage treatment and sludge dewatering equipment.
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Professional manufacture factory for waste incinerator, sewage treatment and sludge dewatering equipment.
As a classic equipment in solid-liquid separation, the plate and frame filter press is widely applied in industries such us chemical, pharmaceutical, and environmental production due to its unique structural design and process adaptability. Below is an analysis of its core characteristics and maintenance protocols:
I. Core characteristics of the plate and frame filter press
1. High efficient separation and high solid content
Based on the principle of pressure filtration, solid particles are intercepted by the filter cloth to form a filter cake. After separation, the solid content of the sludge cake can reach 70%-85%, which is particularly suitable for the fine separation of nearly incompressible suspensions. The filtrate is clear and transparent.
2. Flexible structure and high adaptability
The filtration area can be adjusted by adding or reducing the number of plate frames(1-1200m3). The edge length of the filter frame can cover from 200 to 2000mm. The material can be selected from cast iron, stainless steel or polypropylene, meeting the requirements of different corrosive materials. The working pressure range is wide(0.3-3MPa), and it can handle suspensions with a solid concentration lower than 10%.
3. Automatic upgrades and limitations
The new automatic model is equipment with hydraulic transmission, mechanical cake discharging and filter cloth flushing devices, achieving synchronous operation of the plates and program control. However , the traditional model still have shortcomings such as intermittent operation, high dependence on manual operation, and easy wear of moving parts.
II. Equipment maintenance points
1. Filter cloth and sealing system management
Regularly use nylon scrapers to clean the clogged areas at the feed inlet to prevent the filter cloth from getting blocked; check the aging condition of the silicone rubber sealing ring to prevent leakage. It is recommended to rinse the filter cloth after each batch of filtration to extend its service life.
2. Mechanical parts lubrication maintenance
The hydraulic system should be regularly replaced with standard model hydraulic oil. Lubricant should be added to the chain-driven parts every quarter to ensure the synchronization of the puller. Special attention should be paid to cleaning up the corrosion residues such as calcium carbide sludge that erode the metal components.
3. Running parameter monitoring
Keep the clamping force within 140kgf/cm2 to avoid deformation of the filter plate; monitor the opening degree of the pressing plate(60-65 cm is ideal) to prevent the sealing failure. After the machine stops,the pressure must be completely released to extend the service life of the clamping cylinder.
The plate and frame filter press, with its advantages such as simple structure and low investment cost, remains the preferred solution for small and medium-sized solid-liquid separation projects. Through standardized maintenance, the stability of the equipment can be significantly enhanced, and the failure rate can be reduced by more than 30%. Users need to choose between manual and automatic models based on production scale, balancing efficiency and operation and maintenance costs.
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