The design of the filter press frame absorbs the technology of Germany, the United States, Japan and France, among which the filter press seat, pressure plate and thrust plate are made of high quality medium plate, welded and formed by carbon dioxide protection welding, tempered by qualitative treatment, sandblasted by high speed air blasting machine, sandblasted to remove rust - Sa 3 level. With the advantages of corrosion resistance, high hardness, high tensile strength, good impact resistance, etc., by the overpressure test, the safety factor of 2.2 times, can ensure the use of safe and stable.
2. The material of the main beam is Q345 bridge steel bridge steel, welded and formed by large automatic submerged arc welding. By high-speed air blasting machine sandblasting treatment, sandblasting rust removal - Sa 3 grade. Rail cladding 304L stainless steel. With the advantages of corrosion resistance, high hardness, high tensile strength, good impact resistance, etc., by the overpressure test, the safety factor of 2.2 times, can ensure the use of safe and stable, can meet the requirements of the use of high-pressure filter plate, and completely solve the problem of deformation of the main beam of the filter press.
3、Surface treatment of frame
Surface treatment includes oil removal --- emulsification oil removal. Rust removal --- high speed air blasting machine sand blasting treatment, sand blasting rust removal --- Sa 3 level, remove surface defects, improve the adhesion of the coating and anti-corrosion ability. Epoxy anti-corrosion primer plus epoxy heavy anti-corrosion top coat. To achieve the effect of strong acid resistance.
1. The hydraulic system structure is reasonably designed and structured, and the whole transfer process is completed in the dust-free and constant temperature workshop. The main function of the hydraulic system is to complete the automatic pressing, automatic pressure-holding, automatic pressure replenishment, automatic release, forward and backward in place since the stop and other actions of the cylinder in sequence, the whole hydraulic system is reliable, easy to repair and maintenance.
2. The hydraulic components and main control valves of the automatic pressure-holding system are made by well-known domestic companies, and the oil pump is made by Shanghai Huadao Hydraulic Co. Ltd. to ensure the smooth and reliable operation of the filter press, easy operation of the filter press, flexible operation, safe and reliable, and no leakage in the hydraulic system.
3. The hydraulic oil cylinder is made of 27SiMn seamless steel pipe, which is roughly bored, finely bored and rolled. All the accuracy reaches IT7 grade.
4. The piston rod is made of No.45 steel, ground and tempered and plated with 0.06 hard chrome, which has the advantages of high hardness, good wear resistance, corrosion resistance and long service life.
5. The sealing ring is made of tetrafluoro copper in Europe and America, which can operate normally for five years without replacement, ensuring the sealing and flexibility of the cylinder.
6. In order to improve the anti-corrosion ability of hydraulic oil tank, electric control cabinet and protective parts, our company has built a fully automatic production line integrating pickling, phosphating and plastic spraying treatment.
Electrical control system.
The control system is a machine - electric - liquid integrated design
The electrical components adopt the products of China Chint, which are safe and reliable. (can run normally 200,000 times without failure); functions include: automatic pressing, automatic pressure-holding, automatic replenishment of parts, automatic loosening, loosening in place since the stop, etc., easy to operate and stable performance.
The filter plate is the core part of the filter press, and the different material, form and quality of the filter plate will directly affect the quality of the final product.
Chamber type filter plate: 1.
The material of "Dazhang" diaphragm chamber filter plate is TPE elastomer plus alkali-free glass fiber polypropylene, which is the elasticity of rubber filter plate and the toughness and rigidity of reinforced polypropylene, and the number of drums is more than 13,000 times (German DIN7129 standard: 10,000 times), and the drum pressure is ≥ 2Mpa; processed by CNC Machining center, the flatness of the filter plate reaches 25μm or less. The sealing performance is good when the filter plate is pressed, and there is no liquid leakage when feeding.
2. The structural dimensions of the filter plates produced by "Dazhang" not only conform to the JB/4333.3-2005 standard in China, but also conform to the DIN7129 standard in Germany, which is completely common with European and American products.
3. Compared with the filter plate produced according to our industry standard, the filtration speed is increased by 20%; the density, strength, fatigue resistance and anti-aging degree are doubled, and the service life can be more than 20 years.
4. filter plate High feed pressure of 1.0Mpa, high temperature and pressure resistance, good anti-corrosion and sealing, short filtration cycle, good flushing effect, low water content of filter cake.
Filter cloth is the key to the use of the filter press and the good or bad filtering effect. The selection of filter cloth is very important, and the good or bad performance of the filter cloth directly affects the effect of filtration. In order to achieve a more ideal filtration effect and speed, it needs to be selected according to the particle size, density, viscosity, chemical composition and filtration process conditions of the material.