4results about How to "Avoid overgrinding" patented technology

This utility model relates to the field of waste residue grinding technology, specifically to an ultrafine grinding equipment for industrial waste residue. It addresses the technical problem that large particles of waste residue require longer grinding times in the equipment, while small particles may be over-ground, wasting energy. The equipment includes: a ball mill drum, a steel ball grid, a slag inlet pipe, a liner, a screen cylinder, a bearing frame, a spiral blade, a slag discharge port, a slag guide cylinder, a slag guide port, and a slag inlet mechanism. The waste residue moves towards the discharge end within the rotating ball mill drum. During this movement, it is ground by the steel balls and falls into the screen cylinder. The rotating screen cylinder, in conjunction with the spiral blade, screens out the waste residue that meets the requirements (small particles), while the waste residue that does not meet the requirements is returned to the slag inlet mechanism. This avoids over-grinding of small particles in the equipment and allows large particles of waste residue to better collide and contact with the grinding media, improving grinding quality and efficiency.

This utility model discloses a high-precision gear surface grinding device, belonging to the field of grinding processing technology. It includes a grinding head and a grinding tail. The grinding head has a connecting rod inside, with a second spring mounted on the connecting rod. A handle connecting rod is rotatably connected to the left side of the connecting rod, and a handle head is connected to the tail of the handle connecting rod. A grinding head is connected to the right side of the connecting rod. A protrusion is fixedly connected to the outer wall of the grinding head, and a first spring is installed inside the protrusion. A button is provided on the outer wall of the grinding head, connected to a groove, and a third spring is installed on the button. A clamping component is provided inside the grinding tail, with bolts mounted on the clamping component. An oil inlet is provided on the right side of the grinding tail, with a liquid flow channel inside. This utility model can grind the inner wall of gears, while simultaneously providing a liquid flow channel and an air inlet pipe for lubrication and cleaning of the internal structure.

This invention belongs to the field of lithium-ion battery material preparation technology, and particularly relates to a multi-stage grinding device for lithium iron phosphate precursors. Addressing the problems of low grinding efficiency and inability to effectively grind lithium iron phosphate precursors of varying viscosities in existing devices, the following solution is proposed: a grinding jar, and coarse grinding components and fine grinding components arranged vertically. Both the coarse and fine grinding components are connected to the shaft of a grinding rotor. The rotation of the grinding rotor drives the coarse and fine grinding components to operate synchronously. This allows for the coarse grinding of the lithium iron phosphate precursor fed into the jar, followed by fine grinding, forming a multi-stage grinding process to ensure better grinding results. Furthermore, through a combination of vertical layering design and composite grinding, the lithium iron phosphate precursor is progressively refined within a single grinding jar, significantly improving the grinding efficiency and product consistency of the lithium iron phosphate precursor.