4results about How to "Effective shear" patented technology

The utility model discloses foil winding machine tail end shearing equipment which comprises a main machine frame, a cutting device and a wind-up roller, an auxiliary machine frame is arranged on one side of the main machine frame, a tension adjusting roller is connected between the main machine frame and the auxiliary machine frame, two sets of tension rollers are arranged on one side of the tension adjusting roller, and the two sets of tension rollers are arranged on the other side of the main machine frame. The two sets of tension rollers are located on the same horizontal line, tension detectors are arranged on the two sets of tension rollers, the cutting device is arranged between the two sets of tension rollers, a cutting air cylinder is arranged in the center of the top of the cutting device, and connecting stand columns are arranged at the connecting positions of the cutting device and the main machine frame and the connecting positions of the cutting device and the auxiliary machine frame. And a cutting table is arranged under the cutting device, the winding roller is arranged at the end, away from the tension adjusting roller, of the main machine frame, and a winding motor is arranged at the joint of the winding roller and the main machine frame, so that foil shearing can be effectively completed, and it can be guaranteed that a notch is smooth and free of burrs in the shearing process.

The invention provides a preparation method of high-yield icodextrin by combining an ultrasonic field with a single enzyme system. The preparation method comprises the following steps: S1, enzymolysis; s2, performing primary ultrafiltration; s3, ultrasonic hydrolysis; s4, carrying out secondary ultrafiltration; and S5, spray drying. According to the method, firstly, the proportion of dextrin with the molecular weight smaller than 1638 Da in the enzymatic hydrolysate is controlled to be not larger than 7%, the working procedures of recycling macromolecular dextrin and conducting ultrasonic hydrolysis are added, and the yield can reach 80-88%. New amylase does not need to be additionally added in ultrasonic hydrolysis, the hydrolysis time is greatly shortened, the pertinence is high, ultrasonic hydrolysis after enzyme deactivation belongs to physical modification, the reaction degree is conveniently controlled, the generation proportion of dextrin with the molecular weight smaller than 1638 Da is accurately controlled, the production cost is low, the preparation efficiency is high, the consistency of a hydrolysis product and an original product is good, and the method is suitable for industrial production. The generation of 5-hydroxymethylfurfural is completely eradicated, so that the peritoneal dialysis can be continuously carried out.

The invention relates to the technical field of separation and extraction of natural products, in particular to a method for supercritical separation and extraction of astaxanthin, which comprises the following steps: (1) weighing raw material components in parts by weight; (2) mixing a biomass raw material rich in astaxanthin with the functionalized deep-eutectic solvent, and performing physical field enhanced extraction to obtain an extracting solution; (3) filtering the extracting solution through a vibrating membrane, and purifying to obtain a trapped fluid containing astaxanthin; and (4) carrying out supercritical CO2 back extraction on the trapped fluid, separating to obtain an astaxanthin product, and recovering the functional eutectic solvent. According to the method, continuous membrane separation and purification under the eutectic solvent system are realized, the purity of astaxanthin and the proportion of all-trans astaxanthin are maintained while the extraction rate of astaxanthin is increased, the solvent can be recycled after being recovered, and the production cost and waste liquid discharge are greatly reduced. All the raw materials are nontoxic and harmless, no organic solvent is used in the technological process, and good application prospects are achieved.

The utility model discloses a garment sewing machine thread trimming structure which comprises a thread trimming machine base, a guide sliding rail is arranged on the thread trimming machine base, a control motor is arranged on one side of the bottom of the thread trimming machine base, a rotating gear is connected to the driving end of the control motor, and a transmission gear is arranged on one side of the rotating gear in a meshed mode. The utility model relates to the technical field of thread trimming structures, the thread trimming structure of the garment sewing machine improves the tension of a thread hook during thread trimming through the arrangement of a reduction gear and a threaded telescopic structure, and in order to avoid the situation that the tension is too large and a sewing thread is pulled apart, a reverse thrust spring is arranged at the connecting position of a threaded rod and the thread hook, and meanwhile, in order to keep full contact, the thread hook is not damaged. The elastic piece structure is arranged on the corresponding side of the thread cutting blade, the sliding block is pushed to enable the thread hook to make full contact with the thread cutting blade when the thread hook hooks the thread, and the hard sewing thread can be more effectively cut.