1250 Polypropylene High-pressure Diaphragm Chamber Filter Plate

I. Product Overview

The Type 1250 polypropylene high - pressure diaphragm chamber filter plate is one of the core components for filter presses to achieve efficient solid - liquid separation. The "1250" in the model usually represents the relevant size specifications of the filter plate. This filter plate is manufactured using high - quality polypropylene materials combined with advanced diaphragm technology, featuring excellent performance such as high pressure resistance and corrosion resistance. It is widely applied in numerous industries including chemical engineering, environmental protection, metallurgy, and mining, providing reliable and efficient solutions for the filtration and dewatering of various complex materials.

II. Product Structural Features

Dimension Specifications: The external dimensions are generally about 1250×1250mm, and the thickness usually ranges from 80mm to 100mm, which can be determined according to the actual design and usage requirements. The diameter of the central feeding hole is reasonably set to ensure that the materials can smoothly enter the filter chamber. Such a size design gives the filter plate an appropriate filtration area and filter chamber volume, meeting the filtration needs of different production scales and improving the filtration efficiency.

Basic Chamber Structure: The filter plate has a chamber structure. Sealing grooves are provided around it, where sealing rubber strips can be installed. When the filter press is in operation, adjacent filter plates fit closely together, and the sealing rubber strips form a sealed filter chamber, 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) 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 dewatering effect.

Reinforcing Rib Design: 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 better in terms of strength and is less likely to be deformed or damaged.

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 1250 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 about 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, and 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 dewatering effect.

IV. Working Principle

Filtration Stage: After the filter press is started, a certain number of Type 1250 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) 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), completing the discharge process and preparing for the next filtration cycle.