3results about How to "Prevent roundabout" patented technology

This utility model discloses a fresh-mixed beverage bottle cap, comprising an upper cap, a middle cap, and a lower cap. The upper cap includes a top cap and an anti-theft ring connected below the top cap. The inner wall of the top cap has internal threads that mate with the middle cap. The anti-theft ring is fitted around the middle cap, with one part connected to the top cap via a point connection and the other part connected to the top cap via a pull strip. The two sides of the pull strip are respectively connected to the top cap and the anti-theft ring via point connections. The lower cap is inserted into the beverage bottle and screwed onto the bottle neck. The middle cap is inserted into the lower cap, and the upper cap is screwed onto the middle cap, sealing the top of the middle cap to form a cavity for storing honey. Through the cooperation of a guide post and a guide groove, the middle cap moves downward within the lower cap, puncturing the bottom of the lower cap, allowing the honey in the cavity to flow into the beverage bottle through the puncture. The upper, middle, and lower caps employ a multi-stage sealing system. Through a precision sealing structure, the pre-treated honey meets the colony count requirements, with a residual crystal nucleus content of ≤2%, preventing damage to the seal due to crystal expansion during storage.

The application relates to the technical field of battery packs, in particular to an anti-loose electrical connection battery pack. The technical scheme comprises a shell, an internal battery pack and a liquid cooling channel. The innovation is that a hydraulic locking module is integrated into the connecting part of the copper bar leading out of the shell. The module fills transmission medium in the flow cavity of the limiting ring, and controls the in-out of the plug by using a driving mechanism, so as to block or release the rotating path of the blocking block linked with the nut. When the plug blocks the flow cavity, a hydraulic lock is formed, and the nut is completely prevented from loosening; when the plug exits, the nut can be normally screwed. The application fundamentally solves the problem that the electrical connection is prone to loosening in a vibrating environment, is high in safety and convenient in operation and maintenance.

The utility model relates to a mute centrifugal fan, and belongs to the technical field of fans, the mute centrifugal fan comprises a fan shell, an air inlet cover is arranged at an air inlet of the fan shell, the air inlet cover is of a cavity structure and is filled with a sound absorbing material, and a plurality of first through holes allowing sound waves to enter the air inlet cover are formed in the air inlet cover; the air inlet cover is used for covering the air inlet so as to limit the path, perpendicular to the air inlet, of sound waves and airflow, the air inlet of the fan shell is provided with an annular sleeve along the inner wall of the air inlet, the annular sleeve is provided with a first mounting groove used for being filled with sound absorption materials along the circumferential face of the annular sleeve, and the annular sleeve is provided with a first sealing plate used for covering a notch of the first mounting groove along the circumferential face of the annular sleeve. The first sealing plate is provided with a plurality of second through holes allowing sound waves to enter the first mounting groove, the peripheral face of the air inlet cover and the first sealing plate jointly define an air inlet space, and the sound waves can be reflected between the peripheral face of the air inlet cover and the first sealing plate in a reciprocating mode. The sound energy attenuation efficiency is improved, and then the noise reduction effect is improved.