1500 Polypropylene High-pressure Diaphragm Chamber Filter Plate

The Type 1500 polypropylene high-pressure diaphragm chamber filter plate is one of the core components for filter presses to achieve efficient solid-liquid separation. The "1500" in the model usually represents the relevant size specifications of the filter plate. This filter plate is manufactured using high-quality polypropylene materials and combined with advanced diaphragm technology, possessing excellent properties such as high pressure resistance and corrosion resistance. It is widely applied in solid-liquid separation operations in numerous industries such as chemical engineering, environmental protection, metallurgy, and mining, providing reliable solutions for the filtration of various complex materials.

II. Product Structural Features

Dimension Specifications: The external dimensions are generally approximately 1500×1500mm, and the thickness varies according to specific design and usage requirements, typically ranging from 80mm to 100mm. The diameter of the central feeding hole is roughly around 200mm. Such a size design ensures that the filter plate has an appropriate filtration area and filter chamber volume, meeting the filtration needs of production at different scales.

Basic Chamber Structure: The filter plate has a chamber structure. Sealing grooves are provided around it, and sealing rubber strips can be installed. When the filter press is in operation, adjacent filter plates fit closely together, and a sealed filter chamber is formed through the sealing rubber strips, effectively preventing the leakage of filtrate. The surface of the filter plate is carefully designed with drainage grooves, which can guide the filtrate to flow smoothly out of the filter cloth and be discharged from the filter chamber through the drainage holes on the filter plate, ensuring the smooth progress of the filtration process.

Diaphragm Structure: This is the key part that distinguishes this filter plate from ordinary chamber filter plates. A retractable diaphragm is built into the filter plate, and the diaphragm material is usually a special material with high elasticity and high-pressure resistance. After the filtration is completed, high-pressure fluid (such as compressed air or water, etc.) is injected into the space between the diaphragm and the filter plate. The diaphragm will expand and bulge, squeezing the filter cake in the filter chamber to further squeeze out the water in the filter cake and achieve a more efficient dehydration effect.

Reinforcing Rib Design: In order to enhance the strength and rigidity of the filter plate under high-pressure working conditions, reasonably arranged reinforcing ribs are set on the surface or inside of the filter plate. These reinforcing ribs can effectively disperse the pressure, preventing the filter plate from deforming or cracking under high pressure and ensuring the stability and reliability of the filter plate during long-term use.

III. Product Material Characteristics

High-Strength Polypropylene: The main material is polypropylene, which has high strength and rigidity. It can withstand the huge pressure generated during the filtration and high-pressure pressing processes of the filter press and maintain the structural integrity of the filter plate. Compared with traditional filter plate materials, the polypropylene filter plate performs excellently in terms of strength and is not prone to deformation or damage.

Excellent Corrosion Resistance: Polypropylene has good tolerance to most chemical substances such as acids, alkalis, and salts and can adapt to the filtration of various corrosive materials. In industries such as chemical engineering and metallurgy, it is often necessary to handle materials containing corrosive components. The Type 1500 polypropylene high-pressure diaphragm chamber filter plate, with its outstanding corrosion resistance, can effectively extend the service life of the filter plate and reduce the maintenance cost of the equipment.

Good Temperature Resistance: It can work stably within a certain temperature range, generally able to withstand temperature changes of approximately 0°C to 95°C. This enables the filter plate to maintain good performance in different working environments. Whether in cold winters or high-temperature production workshops, it can function normally.

Characteristics of Diaphragm Material: The special material used for the diaphragm part has characteristics such as high elasticity, high-pressure resistance, and good flexibility. Under the action of high-pressure fluid, the diaphragm can expand uniformly, comprehensively and effectively squeezing the filter cake. At the same time, it can quickly return to its original shape after the pressure is released, ensuring the service life of the diaphragm and the dehydration effect.

IV. Working Principle

Filtration Stage: After the filter press is started, a certain number of Type 1500 polypropylene high-pressure diaphragm chamber filter plates are closely arranged under the action of strong mechanical force, and the inner cavities between the filter plates form a filter chamber. The material to be filtered is conveyed into the filter chamber under the specified feeding pressure. The solid particles in the material are intercepted by the filter cloth and gradually form a filter cake on the surface of the filter plate, while the liquid part passes through the filter cloth, follows the drainage grooves on the surface of the filter plate, and is discharged from the filter chamber through the drainage holes, achieving preliminary solid-liquid separation.

Pressing Stage: After the filtration is completed, high-pressure fluid (such as compressed air or water, etc.) is injected into the space between the diaphragm and the filter plate. The diaphragm expands and bulges under high pressure, squeezing the filter cake in the filter chamber to further squeeze out the water in the filter cake, reducing the moisture content of the filter cake and improving the solid-liquid separation effect. After pressing, the moisture content of the filter cake can be significantly reduced, facilitating subsequent treatment and disposal.

Discharge Stage: After the pressing is completed, the pressure between the filter plates is reduced, and the filter plates are loosened. The filter cake falls off from the surface of the filter plate due to its own gravity or with the help of an auxiliary discharge device (such as a scraper, etc.), completing the discharge process and preparing for the next filtration cycle.

V. Application Fields

Chemical Industry: In the production of chemical raw materials and the purification of chemical products, it is used to separate various suspension liquids, emulsions, and other materials, such as in the filtration links of the production of dyes, pigments, pesticides, fertilizers, etc., effectively removing impurities and improving product purity.

Environmental Protection Industry: It is widely applied in fields such as sewage treatment and sludge dewatering. It can efficiently handle solid pollutants in sewage, conduct deep dewatering treatment of sludge, reduce the moisture content of sludge, facilitate subsequent sludge disposal (such as landfill, incineration, etc.), and reduce environmental pollution.

Metallurgical Industry: In the processes of metal smelting and ore dressing, it is used to separate the solid particles and liquid in the ore pulp, improve the metal recovery rate, and at the same time treat the tailings to reduce the impact of tailings discharge on the environment.

Mining Industry: In the processes of ore mining and processing, it filters and dewaters the ore pulp, separates useful minerals and wastewater, and realizes the effective utilization of resources and the up-to-standard discharge of wastewater.