4results about How to "Enables reusability" patented technology

The utility model relates to the technical field of connecting pieces, and discloses a hollow nut and an expansion bolt assembly. The hollow nut comprises a nut body and a conical head which are integrally connected, an inner hole penetrating through the nut body and the conical head is formed in the hollow nut, and threads are arranged on the hole wall of the inner hole. The conical head is provided with a first end and a second end which are oppositely arranged, the first end is connected to the nut body, and the outer diameter of the first end is larger than that of the second end. According to the hollow nut and the expansion bolt assembly, by designing and improving the structure of the hollow nut, the technical problem that an expansion bolt component cannot be repeatedly used in the related technology is solved.

The invention relates to the technical field of steel structure building suspended ceilings, in particular to an assembly type steel structure building suspended ceiling structure which comprises a lossless clamping mechanism arranged in a groove in the side edge of I-shaped steel and a batten assembly mechanism installed in the lossless clamping mechanism and transversely arranged in the groove of the I-shaped steel. The steel gap adaptation mechanisms are installed on the two adjacent lossless clamping mechanisms in the two pieces of I-shaped steel, and the ceiling battens are assembled on the batten assembling mechanism. The lossless clamping mechanism comprises a bearing pad. The two groups of lossless clamping mechanisms which are symmetrically distributed are arranged in the groove of the assembled I-shaped steel, the two groups of lossless clamping mechanisms are loaded in a matched mode according to the length of the I-shaped steel, and the two groups of lossless clamping mechanisms which are arranged are assembled through the cross beam. And two groups of steel gap adaptive mechanisms which are matched with two I-shaped steel gaps and are transversely arranged are used for fixing the four groups of uniformly distributed nondestructive clamping mechanisms in a rectangular structure, so that the problem of generation of a large amount of construction waste can be avoided while nondestructive assembly is performed on the surfaces of the I-shaped steel.

The present invention discloses a method for cleaning a surface enhanced Raman substrate and achieving reusability, which belongs to the field of molecular recognition and nano-preparation, and can clean the surface of a substrate without affecting the SERS activity of the substrate. The present invention targets a substrate with impurities and detection molecules, uses an atomic layer deposition technique to coat it with a uniform layer of oxide, and performs high-temperature annealing to decompose the pollutants on its surface, and finally removes the oxide coating on the surface by chemical corrosion, thereby obtaining a pure substrate, which can achieve the purpose of cleaning the substrate and making it reusable.