Integral composite rubber diaphragm filter plate and one-step molding method thereof

Abstract

The invention relates to an integral composite rubber diaphragm filter plate and a one-step molding method thereof. The integral composite rubber diaphragm filter plate comprises an inner liner core plate and two rubber diaphragms which covers and are fixed at the two sides of the inner liner core plate, wherein the inner liner core plate is provided with a liquid passing through hole, an external connecting through hole, an internal connecting through hole and a vent pipe; bonding fixation areas are arranged at the two sides of the inner liner core plate and at the periphery of the liquid passing through hole respectively; the two sides of the inner liner core plate are respectively covered by the two rubber diaphragms; the rubber diaphragms are fixed at the two sides of the inner liner core plate by being stuck with the bonding fixation areas; the rubber diaphragms at the two sides of the inner liner core plate are stuck with each other on the side wall around the inner liner core plate, on the wall of the liquid passing through hole and in the internal and the external connecting through hole. The molding method of the filter plate comprises the steps of firstly, making the inner liner core plate, coating an adhesive onto the inner liner core plate, and molding the rubber diaphragms and the inner liner core plate for once by vulcanizing, pressing and bonding. The filter plate is good in sealing effect, reduces the springback gas energy consumption of the rubber diaphragms, is corrosion-resistant, high in strength and long in service life, has few working procedures, and reduces the cost and the manipulation strength.

Description

technical field [0001] The invention relates to a diaphragm filter plate, in particular to an integral composite rubber diaphragm filter plate capable of effectively saving energy and reducing consumption, reducing production cost and labor intensity, and improving separation quality and a one-time forming method thereof. Background technique [0002] In recent years, with the rapid development of chemical, pharmaceutical, food and other industries and the increasing emphasis on environmental protection, solid-liquid separation devices have been widely used. The filter press is a common equipment for solid-liquid separation, and the diaphragm filter plate is an indispensable and important part of the solid-liquid separation equipment for the filter press. Traditional diaphragm filter plates are mostly made of polypropylene, and their structural shapes are mostly assembled structures, that is, two diaphragm skins, ordinary filter plates or steel plates are assembled through ...

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Problems solved by technology

Traditional diaphragm filter plates are mostly made of polypropylene, and their structural shapes are mostly assembled structures, that is, two diaphragm skins, ordinary filter plates or steel plates are assembled through bolts or nail rods. For example, Chinese patent 200810060839.9 discloses a high-reliability Diaphragm filter plate and its manufacturing method, one or two or more through nail holes are opened on the sealing joint surface of the core plate, the diaphragm on both sides of the core plate is connected with the diaphragm by a nail rod, the nail rod passes through the through hole and the The diaphragm located on both sides of the core plate is tensioned on the sealing joint surface of the core plate. This type of diaphragm filter plate is molded in multiple times, which has high production cost, poor sealing performance, high gas energy consumption, high maintenance cost and labor intensity, and is in use. The template is easy to age during the process, and the membrane skin will be unusable due to aging. At the same time, the core plate is easy to corrode due to the existence of the nail rod, which greatly reduces the processing efficiency and life of the equipment, and increases the operating cost; or use injection molding, such as Chinese patent 200610111735.7 Disclosed is an integral polypropylene membrane filter plate and a preparation method thereof. This type of membrane filter plate has disadvantages such as insufficient strength, unsatisfactory separation effect, and short service time.

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