2results about How to "Contactless" patented technology

The invention discloses a negative pressure-air injection composite air suction type dust collection device and method, and relates to the technical field of dust collectors. The device integrates three core modules, namely a suction head module, a main body module and a single-cylinder cyclone-dust bag composite collection module; the suction head module adopts a composite mode of'air injection stripping-negative pressure adsorption ', so that attached dust can be efficiently stripped and adsorbed; the collecting end adopts a two-stage filtering structure of a degradable dust bag of a single-barrel cyclone separation and Kringing paper folding structure, large-particle dust is separated through single-barrel cyclone, and fine dust is accurately collected through the dust bag; the dust bag realizes pure mechanical automatic closing by means of a Kresling paper folding structure, is opened and conducted by mechanical force during mounting, is automatically folded and closed during dismounting, does not need a circuit and a heat sealing structure, is free of contact and dust leakage in the whole process, and is convenient to replace; the dust collector is compact in structure, suitable for multiple scenes, environment-friendly, practical and suitable for various high-precision cleaning scenes, and has cleaning efficiency and dust collection sealing performance.

This utility model discloses a smart knob with a bearing, including a base, a knob outer ring, an annular rotating component, an inner support component, a pinion, a bearing, and a PCBA circuit board. The base has a bearing mounting position and a pinion mounting position. The bearing is mounted outside the bearing mounting position, and the pinion is rotatably mounted on the pinion mounting position. The lower end of the annular rotating component is mounted outside the bearing, and the outer side of the annular rotating component is connected to the inner side of the knob outer ring. A large gear is located on the inner side of the upper end of the annular rotating component, and the pinion meshes with the large gear. A permanent magnet is installed inside the upper end of the pinion. The inner support component is connected to the base, located above the annular rotating component, and the annular rotating component can rotate below the inner support component. The PCBA circuit board is mounted on the inner support component and has a magnetic induction chip that magnetically inducts with the permanent magnet. This utility model exhibits good rotational smoothness.