The boiling granulating dryer is a material powder particle which is in an annular fluidized state in a raw material container (fluidized bed), is preheated and mixed by the purified heated air, and atomizes the binder solution to cause a plurality of particles. Aggregation of the agglomerates containing the binder, the moisture in the pellets evaporates due to the continuous drying of the hot air, and the binder solidifies, and the process is repeated repeatedly to form ideal, uniform microporous spherical particles. So what do we do when the boiling granulation dryer fails during use? Let's take a look at Changzhou Chuangke Dry to explain to you:
1. Boiling granulating dryer hoop positioning pin break
Cause: When installing the hoop, tighten one end of the screw at a time, causing the locating pin to be broken.
When installing the hoop, pay attention to the letters on both ends of the hoop, and do "AA, BB, CC". Before installation, apply a layer of grease on the two 15° faces of the hoop to reduce the hoop in the equipment start-up and Wear caused by stopping. When installing, first install the piece with the positioning hole first, then install the other two pieces. When tightening the screws, three screws are required to be evenly and gradually tightened, and the uniformity of the three gaps is ensured as much as possible. After pre-tightening with a ratchet wrench, use the extension handle to gradually increase the force until it is tight.
2, boiling granulation dryer wear ring wear
The function of the wear ring is to protect the transmission wheel on the one hand, to avoid premature wear and prolong its service life, and on the other hand to play a guiding role, so that the ring mold and the transmission wheel do concentric circular motion. Wear of the wear ring is unavoidable during use, and a layer of grease on the surface reduces wear and facilitates the installation of the ring mold. If the mating surface of the ring mold and the wear ring is found to be bright, it means that the wear ring is worn out. When the wear exceeds 1/3, the wear ring needs to be replaced, otherwise the serious result of the ring mold rupture will be caused. Serious wear of the wear ring will also cause the ring mold to not rotate in the circumference, but the single pendulum type turbulence will accelerate the fatigue of the front bearing of the empty shaft and affect the service life of the bearing. The wear ring will protrude due to vibration during operation. Therefore, each time the ring die is replaced, the ring die mounting position on the drive wheel must be cleaned and the wear ring knocked back to its original position.
3, boiling granulation dryer drive wear and tear
The transmission key can only function as a transmission. When the ring mold starts, the ring keyway and the transmission key will momentarily collide. Over time, the drive key will be aggravated. Please pay attention to the timely replacement, the gap of the ring die key groove is broken. It is the result of not being replaced in time after the drive key is worn. In order to minimize the impact of the impact on the drive key, we can rotate the ring mold counterclockwise before tightening the hoop screw to minimize the gap between the drive key and the ring die keyway.
4, the use of boiling granulating dryer hoop screw spherical gasket
The two spherical gaskets of the hoop screws are used in groups. The spherical surface of one gasket is matched with the concave surface of the other gasket. The core function is face contact rather than point contact. When the grain is processed, it is cut after the whole circle is completed. There is a gap between each piece during installation. Therefore, it is difficult to ensure that the position of the bolt hole is on a line. The use of a group of spherical gaskets can ensure that the space between the spacers is spherical. Coordination, the gasket and the bolt, the nut, the gasket and the hoop are in plane contact, so that the bolt will not be deformed, causing problems such as looseness of the hoop. During installation, the grease is applied between the two gaskets to facilitate the mutual displacement of the two forces.
5, boiling granulation dryer die mold cover screw assembly
The die cover screw is a shoulder screw that is used together with the elastic gasket to ensure that the ring die is deformed relative to the ring die when the pressure is deformed, preventing the screw from being cut. The mold cover screw can't be screwed too tightly (the shoulder can contact the ring mold), and the elastic force of the elastic washer is enough to press the mold cover. If it is tightened too much, the screw will be damaged (fracture or shoulder wear). . And the phenomenon of "fisheye". The fisheye phenomenon is directly tightened by the use of high-strength screws. When working, the position of the threaded hole of the ring mold is directly pulled out. Not because our fastening assembly is too tight.