Supplying Defu Shandong cooling extruder dedicated plate heat exchanger! Extruder extrusion process of three phases is mainly based plastic extrusion of plastic has the plastic state. Plastic molding process to complete the plastic in an extruder is a complex physical processes include: mixing, crushing, melting, plasticizing, exhaust, compacted and finally molded shape, the process is implemented continuously. Traditionally, however, people tend to react in different plastics extrusion process will be artificially divided into different stages; ① plasticizing stage (mixed plastics, the melting and homogenization); ② formative stages (plastic extrusion); ③ shaping stage (cooling and solidification of the plastic layer). 1, plasticizing stage. Also known as the compression phase. It was completed in the extruder barrel, through rotation of the screw, so that the plasticity of the plastic from the particulate solids into the viscous fluid. Plastics get heat sources in the plasticizing phase two aspects: one barrel of external electric heating; the second is the frictional heat generated when the screw is rotated. At first the heat is external electrical barrel produced by heating; when the normal driving, the heat is achieved by rotation of the screw material in compression, shear, mixing process and machine cylinder wall friction and material elements of the internal friction Q generated. 2, forming stage. It is carried in the nose, due to rotation of the screw and the pressure, the viscous fluid into the nose, the nose inside the mold, so that sticky fluid molding material extruded into the desired shapes of various sizes and packages Online core or outer cover conductor. 3, setting the stage. It is carried out in a cooling tank, plastic extrusion cladding After cooling, the amorphous state to a solid state plastic stereotypes. Product type with removable plate heat exchanger design advantages 1, sheet metal forming a sheet are used precision die stamping, sheet molding only once before has the same accuracy. b a pressing plate formed in particular corrugation depth consistent with the depth of the seal groove, a uniform metal point contact between the plate and the plate. Plate heat exchanger to ensure the machine can operate normally under higher pressure, and the system can withstand the pressure shock, vibration and fatigue. c while in the process of pressure-shaped sheet metal surface coating film, avoid direct contact with the metal of the metal plate may cause the surface to pull, scratch level and for forming the membrane with wear. 2, a gasket gasket structure using herringbone design, the seal type for sealing line. Gaskets are molded whole time. seal groove along the inside and outside edges have good support b plate heat exchanger to ensure that the gasket correctly positioned in any direction, but also to ensure that the gasket has a long service life. Seal groove so that there is enough space in the media for dealing with different gasket swell. c ride Twill sealing gasket. Features can easily replace the gasket. Snap-seal is connected with the plate by means of two fork blade edge, so that accurate positioning of the gasket groove along the pads.