The outer scraper filter has many advantages, but the processing precision is relatively high, so the general unit is difficult to do well. The scraper of the outer scraper can be scraped with multiple sets of fits and attached to the surface of the filter, and the scraping effect is good. The scraper material can be made of stainless steel and scraped inside because of angle problems. If a stainless steel scraper is used, the filter element is severely worn. After the filter cylinder is larger than 400, the cleaning and discharging amount of the outer scraping filter is significantly smaller than that of the inner scraping type. External scraping reduces material waste. After the cylinder is larger than 400, the scraper system of the outer scraper is still in place. After the inner scraper is large, the scraper and the filter can not be very precisely fitted. Even if the machining accuracy is reached, the fixing between the shaft and the scraper may increase the deformation due to the length. In the processing and fixing process of the inner scraper filter, the actual tolerance is unavoidable due to machining tolerances and assembly tolerances due to the need of the fit of the retaining ring and the floor, and the scraper and the filter cannot be completely fitted. The scraping is not clean. The outer scraping filter element and the scraper assembly can be integrally processed twice after assembly to minimize the error. The inner scraping drive shaft is long relative to the outer scraper, and the longer the shaft, the easier it is to deform, again affecting the fitting accuracy. The scraper assembly of the outer scraper is a fixed whole, and the drive shaft portion is short, and deformation and error are not caused by the shaft. The internal shaving of the shaft length and the resulting deformation will also cause additional wear on the shaft seal, causing the shaft seal to wear severely until the leak begins. The outer scraper does not cause such problems. The advantages can be summed up a lot, as long as there is an advantage. This is just a small contrast with the internal scraper, as well as a variety of advanced processes in the process, our outer scraper is much better than the average manufacturer. Although there are many advantages in the outer scraper, most of the domestic manufacturers can't grasp the essence in the manufacturing process, the processing precision is not enough, and the design is not perfect. Even if it can be used, there are still many hidden dangers. If you buy an unqualified product, you might as well use an internal scraper or other filtering product. Most domestic manufacturers have a wait-and-see attitude toward automatic self-cleaning because the part of the technology is not in place but the unqualified filters sold by the propaganda manufacturers have broken their hearts. It is hoped that the user can believe in the reliability of the self-cleaning filter. Of course, it is necessary to know in advance whether the manufacturer of the filter is strong enough. I hope to see the equipment and make a decision. There must be good things, and you need to know them. Fresh Frozen Squid tube Squid Tube,Fresh Squid Tube,Frozen Squid Tube,Fresh Frozen Squid Tube Zhoushan Junwei Aquatic Products Co., Ltd. , https://www.junweiaquatic-intl.com
The difference between the scraper and the outer scraper in the self-cleaning filter