Factory direct supply of fully automatic plate pressing filter machine - Origin factory provides customized solutions, efficient dehydration with reduced manpower required
The working process of the automatic plate-and-frame filter press can be divided into the following four main steps:
1. Press down the filter plate:
The hydraulic system (or the electric mechanical pressing device) operates, pushing the pressing plate to compress all the filter plates and filter cloths between the thrust plate and the pressing plate, thus forming individual sealed filter chambers.
2. Filtration process:
The feed pump pumps the suspended liquid (material) to be treated from the feed port on the thrust plate into the filter chamber.
Under the pressure of the feed pump, the solid particles are retained in the filter chamber and gradually accumulate to form a filter cake; while the liquid (filtrate) penetrates through the filter cloth and flows out through the drainage grooves on the filter plates, and then is collected and discharged outside the machine.
3. Washing and Pressing (Optional):
Washing: If a purer filter cake is required, washing water can be introduced and passed through the filter cake layer for washing.
Compression: For filter cakes with a lower moisture content, the diaphragm compression technology can be adopted. After the filtration process is completed, compressed air or water is injected into the back pressure chamber of the diaphragm filter plate to cause the elastic diaphragm to expand, thereby conducting a secondary compression on the filter cake and extracting more moisture.
4. Discharging process (automatic plate pulling):
After the filtration and pressing processes are completed, the hydraulic system releases the pressing plate.
The automatic plate-lifting system (consisting of a motor, a chain, and a plate-lifting device) is activated. The plate-lifting device will, according to the preset program, grasp and lift each filter plate one by one.
When the filter plate is pulled open, due to the weight of the filter cake and the tension of the filter cloth, the filter cake will automatically fall off the filter cloth and drop into the collection tank or the conveyor below.
The plate expander moves back and forth until all the filter plates are fully pulled out and the filter cake is completely removed. Then it is reset and ready for the next cycle.
Core Structure:
1. Rack section: This includes the thrust plate, compression plate, and main beam, which constitute the basic structure of the equipment.
2. Filtration section: It is composed of multiple filter plates with grooves and a filter cloth sandwiched in between. The materials of the filter plates include reinforced polypropylene, cast iron, stainless steel, etc.
3. Pressing device: A hydraulic system or an electric mechanical device that provides the force for pressing the filter plates together.
4. Automatic Plate Pulling System: Comprising the drive motor, chain, plate pulling device, etc., it enables automatic discharge.
5. Electrical Control System: PLC (Programmable Logic Controller), touch screens, etc., are used to set and control the entire workflow.
Main features:
1. Highly automated: The entire process from pressing, feeding, filtering, and discharging runs automatically. One person can manage multiple machines, significantly reducing the need for manpower.
2. High production efficiency: The automatic plate pulling and unloading process is fast, the entire cycle is short, and the processing capacity is large.
3. Low moisture content of filter cake: Especially for models equipped with diaphragm pressing function, it can significantly reduce the moisture content of the filter cake, thereby enhancing product value or reducing subsequent processing costs.
4. Stable and reliable operation: The structure is robust, and it is controlled by PLC, with a low failure rate and a long service life.
5. Environmentally friendly operation: The entire filtration and discharging process is carried out in a closed or semi-closed environment, reducing the exposure of materials and improving the working environment.
6. Strong adaptability: By replacing different types of filter cloths and adjusting process parameters, it can handle various materials of different properties.
The automatic plate-retracting box-type filter press is an ideal solid-liquid separation equipment for the following industries:
1. Environmental protection industry: Dewatering treatment of municipal sewage plant sludge and industrial wastewater (such as dyeing, electroplating, papermaking, and petrochemical wastewater).
2. Chemical Industry: Solid-liquid separation for products such as dyes, pigments, resins, fertilizers, and caustic soda.
3. Mining and Metallurgy: Dewatering of concentrate and tailings, recovery of sludge during the smelting process.
4. Food industry: Clarification and extraction of starch, sugar solutions, soy sauce, and plant extracts.
5. Ceramics and Building Materials: Dewatering of porcelain clay, kaolin, glazes, etc.
When choosing an automatic plate-type box-type filter press, the following factors need to be considered:
1. The characteristics of the materials to be processed: including the size, shape, concentration, acidity and alkalinity, viscosity, etc. of the solid particles. These determine the selection of the filter cloth and the filtration pressure.
2. Processing capacity requirements: Based on the dry or wet sludge processing volume per hour or per day, determine the required filtration area and the volume of the filter chamber.
3. Requirements for filter cake moisture content: If a very low moisture content is required for the filter cake, it is advisable to choose a model with a diaphragm pressing function.
4. Material Selection: Based on the corrosiveness of the materials, select the appropriate filter plates and frame materials (for example, reinforced polypropylene is suitable for most neutral materials, while stainless steel is suitable for materials with strong corrosiveness).
5. Degree of Automation: Determine whether it is necessary to be linked with other equipment (such as conveyors, packaging machines), or to be connected to a central control system.
6. Installation space: Take into account the overall size of the equipment and ensure there is sufficient space for installation and operation.