2results about How to "Improve grading quality" patented technology

The utility model relates to a bearing protection device of mechanical grading mill, including frame, two main motors are installed to both sides of frame, the output of two main motors installs grading wheel drive, grinding disc drive respectively, grinding disc drive and grading wheel drive connect hollow shaft and solid axle through V type belt respectively, solid axle is placed in hollow axle hole, grinding disc is installed on hollow axle, and is inside the cavity of grinding cavity, grading wheel is installed on solid axle, and is above grinding disc inside the cavity, the upper and lower end of hollow axle is provided with big bearing respectively, and is supported by big bearing, the upper and lower end of solid axle is provided with small bearing respectively, and is supported by small bearing, the outer ring of grinding disc is provided with toothed grinding ring, the cavity of grinding cavity is provided with air guide ring below, and air guide ring is below toothed grinding ring, compared with prior art, the utility model can improve the service life of bearing, reduce the wear and tear and failure risk of bearing, and further improve the effect of equipment grinding and grading.

The invention discloses a jujube fruit grading and automatic screening device which comprises a first support, a second support, a driving assembly, a material collecting mechanism and a material guiding assembly. A feeding roller mechanism is mounted on the first bracket; the second support is installed on one side of the first support, and a plurality of screening rollers arranged side by side are rotationally connected to the second support. The driving assembly is installed on the first support and used for driving the multiple screening rollers and the feeding roller mechanism to rotate. The material receiving mechanism is mounted on one side of the bottom of the second support, and a vibration filtering assembly is mounted in the material receiving mechanism; the material guiding assembly is installed on the second support and used for discharging jujube fruits in inner cavities of the multiple screening rollers into the material collecting mechanism. Screening holes are formed in the screening rollers, and the hole diameters of the screening holes in the multiple screening rollers are sequentially increased in the feeding direction of the feeding roller mechanism. According to the jujube fruit grading and screening device, jujube fruits of different sizes can be graded and screened step by step, impurities and dust in the jujube fruits can be filtered and removed, and the screening efficiency and the grading accuracy are improved.