6results about How to "Play a role" patented technology

The application discloses a composite flocculant based on aluminum chloride and a preparation method thereof, and belongs to the technical field of flocculant preparation, and is used for solving the technical problem that the stability and flocculation performance of the flocculant need to be further improved in the prior art; the branched polymer containing polycarboxyl groups is prepared by the reaction of tris(2-aminoethyl)amine and pyromellitic dianhydride, and the taurine groups are introduced to obtain the sulfobranched polycarboxyl polymer; the titanium phosphorus silicon aminopropyl composite is synthesized by using the sol-gel method, and the inorganic-organic network combination is realized; the polyimidazolium-hydroxy ether is obtained by the reaction of imidazole, epichlorohydrin and bisphenol A diglycidyl ether; the composite flocculant is formed by the reaction of the three under the acidic condition, the composite flocculant combines the polycarboxyl groups, the sulfonic acid groups, the imidazolium groups and the inorganic-organic skeleton, has high charge density, good adsorption and bridging performance, can rapidly form stable flocs, and can effectively remove the suspended particles and organic pollutants in water.

This application belongs to the field of friction stir welding technology, and specifically relates to a friction stir welding apparatus, a friction stir welding method, and a workpiece. The friction stir welding apparatus includes a stirring head and a follower pressure ring. The stirring head includes a shoulder and a stirring pin connected to the first end of the shoulder. The follower pressure ring has an inner hole, and the stirring head is movably inserted into the inner hole. The end face of the first end of the shoulder is flush with the lower end face of the follower pressure ring. The follower pressure ring forms a cavity with the shoulder on one side in the welding forward direction, and the lower end face of the other side is a plane. The above structure not only enables friction stir welding through the stirring head, but also allows the lower end face of the follower pressure ring to press down on the welded area, thereby restraining and eliminating flash.

The utility model discloses a magnetic attraction wireless charging mobile power supply, which comprises a main body, a charging module is arranged in the main body, the main body is provided with a magnetic attraction surface and a supporting surface which are oppositely arranged, the magnetic attraction surface can be magnetically connected with a terminal, and a first accommodating groove is concavely formed in the supporting surface. A rotatable folding support is arranged in the first containing groove, and a torsion ring which is located in the folding support and can rotate independently is arranged on the first containing groove. The magnetic wireless charging mobile power supply provided by the utility model can be supported through the folding bracket, and plays a role of a mobile phone bracket. And meanwhile, by means of the twisting finger ring capable of rotating independently, the user can stretch the finger into the finger ring for taking, and the use convenience of the user is improved.

The utility model provides a kind of novel video analysis device of portable, including video analysis recorder, base, first movable rod and second movable rod;First movable rod and second movable rod are sequentially folded settings, the cooperation of strong magnetic block and magnetic attraction sheet is used, realize the fixation of base, first movable rod and second movable rod continuous folding state, and base can be inserted into the coat pocket of law enforcement personnel, under the cooperation of strong magnetic block and magnetic attraction sheet, base and first movable rod can be clamped and fixed on coat pocket, realize portable carrying, when needing to utilize video analysis recorder to carry out fixed shooting, first movable rod can be turned up, so that it has certain included angle with base, then the bottom of video analysis recorder is placed in the slot, realize the fixation of video analysis recorder, play the role of support, the fixed effect of support makes law enforcement recorder can long time stable shooting.

This utility model discloses a connecting structure for a multi-stage progressive evaporator in a vehicle refrigerator, relating to the technical field of evaporator connecting structures. It includes connecting pipes disposed at both ends of the main body of the connecting structure. Connecting screws are installed inside both the main body of the connecting structure and the connecting pipes. Limiting grooves are provided on the outside of the connecting screws, and ejection springs are installed inside the limiting grooves. A limiting block is installed at one end of the ejection spring. This device, by installing the ejection spring in conjunction with the limiting block, can lock the fixing nut, effectively preventing the fixing nut from rotating and loosening, thus avoiding affecting the tightness of the connection between the multi-stage progressive evaporator of the vehicle refrigerator and external equipment, preventing leakage and abnormal noise. The installation of an anti-slip bracket, in conjunction with the limiting boss, can prevent the connecting screw from rotating, thus fixing the connecting screw and enhancing the stability of the connection between the fixing nut and the connecting screw.

The utility model discloses a foldable wall clock which comprises a base which is of a hollow structure, a movement is arranged in a cavity of the base, and a shaft rod of the movement penetrates through the base and is exposed out of the top surface of the base; the bottom ends of the turnover pieces are rotationally connected to the edge of the top face of the base, the turnover pieces are arranged around the central axis of the base at equal angles, the two adjacent ends of every two adjacent turnover pieces are connected through a connecting piece, and when the turnover pieces are perpendicular to the top face of the base, the turnover pieces are connected through the connecting piece. The two adjacent ends of every two adjacent turnover pieces abut against each other, and all the turnover pieces are spliced to form an enclosing piece. The top cover is used for covering the top end of the enclosure piece; wherein an LED lamp bead is detachably installed in the middle of the top end of the turnover piece, the LED lamp bead is electrically connected with a battery on the movement, and a toggle switch is arranged between the LED lamp bead and the battery. According to the utility model, the functionality is increased, the service cycle can be prolonged, the utilization rate can be guaranteed, and the transportation cost and the packaging cost can be reduced.