Bijie PPH winding tank manufacturing
In the use of PPH storage tank, the process of reaction material mainly depends on the change of storage tank temperature to realize the reaction. When designing PPH storage tank, its pressure and temperature should be standardized. The pressure here refers to the gauge pressure unless otherwise specified. Working pressure refers to the possible high pressure at the top of the container during normal operation. Design pressure: the pressure used to determine the shell thickness at the corresponding design temperature. 1.05 times the high working pressure shall be taken for the internal pressure vessel, and the static pressure of the liquid shall be included. The design pressure of external pressure vessel shall not be less than the possible large internal and external pressure difference under normal operation; Test pressure: refers to the pressure at the top of the vessel under pressure test; The vacuum vessel is designed according to the external pressure. When a safety control device (such as a vacuum relief valve) is installed, the design pressure is taken as the smaller value of 1.25 times the internal and external pressure difference or 0.1MPa, or 0.1MPa if there is no safety control device.
Bijie PPH winding tank manufacturing
PPH winding tank is a plastic tank with good development prospects at present. Its advantage is that the change of processing technology makes it outstanding in the tank. PPH storage tank body uses PPH particulate raw materials to melt with a screw extruder, and then the molten extrusion raw materials produce the tank body on the grinding tool. After a certain level of temperature is reduced, the molding can ensure the integrity of the tank body. Internal welding process features: high mechanization and automation, and stable product quality. The weld specifications can be designed according to the stress characteristics of the product, so as to give full play to the integrity of the weld. The product has good integrity, the weld is integrated with the parent body, and has good corrosion resistance and leakage resistance. It can reduce flash, and the joints are smooth and beautiful. UV absorber is added to PPH granules to prevent aging and prolong service life.
Bijie PPH winding tank manufacturing
PPH storage tank has good temperature resistance, acid and alkali resistance, high strength and impact resistance, longer service life, and no environmental stress fracture damage. At present, the tank has become a necessary equipment for chemical industry, smelting, rare earth, mining, pigment, printing and dyeing, new materials, new energy, and biomedicine. In the next few years, PPH storage tanks will be widely used. Manufacturing process of PPH storage tank: extruding and winding PPH granular materials. The product is formed at one time without welding. PPH tank is welded by polypropylene plate. In terms of corrosion resistance, PPH vertical storage tank and PH vertical storage tank have similar corrosion resistance. From the perspective of safety performance, the PPH tank shell is integrally formed without welding and leakage, while the PPH tank is welded, which is easy to cause leakage and increase unsafe factors. There is a big gap between the other two properties, such as aging resistance.
Bijie PPH winding tank manufacturing
The forming process of PPH storage tank adopts spiral extrusion winding technology with reliable quality. The main processes include tank extrusion winding, external welding, internal seam welding, pipe orifice installation, etc. Can body extrusion winding is the process of using PPH spiral extrusion winding unit to process PPH granules into can body molding. The system adopts the process of hot melting PPH particles, extruding them, and then winding them onto steel dies to form cans. The production efficiency of this process is about 5-8 times higher than that of manual process, and the product is flat and beautiful, with good integrity, no joints, good corrosion resistance and leakage resistance. The tank body is thin at the top and thick at the bottom, and the size and shape of the product are not limited. External welding is the process of using the imported automatic extrusion welding unit to make the large weld of the tank with large stress be welded in one time. The new PPH granular material with the same property as the tank body is hot melted at the large weld seam, and is integrated with the tank bottom and tank body. The process features high mechanization and automation, and stable product quality. The weld specifications can be designed according to the stress characteristics of the product to give full play to the integrity of the weld, reduce flash, and make the joint smooth and beautiful. In addition, the ultraviolet absorber is added to PPH granular material to resist aging and extend the service life.
Bijie PPH winding tank manufacturing
PPH tank itself uses polypropylene in some new process tanks, so it has better corrosion resistance and other properties when used. In many aspects, its performance is better than that of tanks made of other materials, and its service life is longer under natural conditions. There are many advantages, so before use, please carefully check the PPH storage tank in order to better use it. PPH storage tank shall be used before appearance inspection, and its surface shall be free of crack, shrinkage cavity, slag, folding, heavy leather and other defects. The damage depth of mechanical equipment with corrosion depth and dent depth shall not exceed the allowable value of relative product execution standards. The shell test pressure of PPH storage tank valve shall not be less than 1.5 times of the nominal pressure, and the test time shall not be less than 5 minutes. The shell packaging shall be qualified without leakage. The nominal pressure test shall be conducted, and the valve sealing surface shall be qualified. If you want to soften the PPH storage tank, the temperature is about 100 ℃, so we must control the liquid temperature between minus 40 ℃ and 60 ℃ during storage.
