10results about How to "Small difference in quality" patented technology

The utility model provides welding equipment for ship steel structure production, which comprises a machining table, a moving frame, a spring, a mounting plate, a welding gun and a ball roller, one end of the spring is mounted on the mounting rack, and the other end extends towards the processing table; the mounting plate is mounted at one end, close to the processing table, of the spring; the welding gun is mounted on the mounting plate; the ball roller is mounted on the mounting plate, the distance between the ball roller and the machining table is smaller than that between the welding gun and the machining table, the ball roller is located on one side of the welding gun, and the spring pushes the mounting plate to enable the ball roller to abut against the ship steel plate. Therefore, when the welding equipment for ship steel structure production is used, the quality difference caused by the distance between the welding gun and a ship steel plate is reduced, and the welding quality of the ship steel plate is improved.

The present invention relates to the technical field of fine chemicals, and in particular to a method and a reaction device for online control of the molecular weight of a polyphenylene ether product. The method for preparing polyphenylene ether of the present invention comprises the following steps: 1) adding oxygen and phenolic monomers to a reactor containing a solvent and a catalyst for reaction; 2) calculating the average molecular weight of the polyphenylene ether product in the reaction solution described in step 1) according to the relationship between viscosity, temperature, pressure or material concentration and the average molecular weight of the polyphenylene ether product, and when the average molecular weight of the polyphenylene ether product reaches the target molecular weight, adding a quencher to terminate the reaction, and performing post-treatment to obtain polyphenylene ether. In the production process of polyphenylene ether, the present invention monitors data such as viscosity, temperature, material concentration and pressure, calculates the molecular weight of the product in real time, and judges the reaction end point according to the calculation result, thereby realizing precise control of the reaction process and ensuring the stability of production and consistency of product quality.

The invention belongs to a shot blasting process method, and provides a shot blasting method and equipment for an aviation fuel accessory spring in order to solve the technical problem that a traditional shot blasting process cannot meet the performance requirements of the aviation fuel accessory spring. The diameter of the shot is smaller than or equal to one fourth of the gap of the spring working ring, and the diameter of the steel wire of the to-be-machined spring is larger than or equal to three times of the diameter of the shot. The spraying angle meets the condition that the included angle between the spraying angle during shot blasting and the axis of the spring to be machined is 80 degrees or 100 degrees.

The invention discloses trophoblasts for amplification of clinical-grade tumor infiltrating lymphocytes and a preparation method and application of the trophoblasts, and the preparation method comprises the following steps: 1) placing tumor tissues in a complete culture medium, placing the complete culture medium in a 5% CO2 incubator at 37 DEG C, and carrying out wet culture for 2-3 weeks; after finishing, sorting the lymphocytes by magnetic beads; (2) adding the lymphocytes into an amplification culture medium for culturing, transferring the lymphocytes into a cell culture bag after the total number of the cells is greater than 107-108, culturing until the total number of the cells reaches 109-1011, and centrifugally collecting the cells to obtain tumor infiltrating lymphocytes TIL; 3, 10-50 Gy X rays or gamma rays are used for irradiating the tumor infiltrating lymphocytes to damage DNA of the tumor infiltrating lymphocytes to prevent cell division, and the trophoblasts are obtained.According to the method, a large number of amplified TIL is used for replacing PBMC to serve as the trophoblasts for immune cell proliferation, and the lymphocyte trophoblasts which are easier to obtain and better in nourishing effect are provided.

The invention discloses a composite biological inoculant for promoting alcoholization of crude tobacco, which is prepared by the following steps: by taking bacillus licheniformis CICC 10037, candida utilis CICC 1769 and thermolysis thermophila ATCC 27730 as core functional strains, respectively activating and enlarging culture, then carrying out thallus resuspension by using a stable protective agent solution consisting of trehalose, sodium glutamate and sodium carboxymethyl cellulose, and finally, carrying out fermentation, so as to obtain the composite biological inoculant for promoting alcoholization of crude tobacco. The three strains are mixed according to a specific volume ratio to prepare a compound bacterium suspension, and finally the compound bacterium suspension is uniformly adsorbed to a sterilized homologous tobacco powder carrier, so that macromolecular substances such as starch, protein and cellulose in tobacco leaves can be efficiently degraded through the synergistic effect of the three strains, and the variety and content of aroma components are remarkably increased; the method effectively reduces irritant substances such as ammonia and acetaldehyde and harmful ingredients such as nitrosamine specific to tobacco, reduces offensive odor and irritation, improves taste, ensures uniformity and stability of the alcoholization effect, and achieves multiple purposes of quality improvement, aroma enhancement, harm reduction and efficiency improvement in the crude tobacco alcoholization process.

The utility model relates to the technical field of mixer, concretely is a kind of automatic feeding and discharging's mixer for rubber plastic insulation material batching.The utility model, including the mixer body, the surface of the mixer body is equipped with support frame, the surface of the support frame is fixedly connected with motor, the output of the motor is equipped with auxiliary device, the auxiliary device includes pivot, the pivot is fixedly connected with the output of motor, the arc surface of the pivot is fixedly connected with three fixed frame, the both sides of the fixed frame are fixedly connected with clamping post, the arc surface of the clamping post is slidably connected with stirring blade, the surface of the fixed frame is fixedly connected with two special-shaped plate.Solved when the single stirring blade appears damage, need to carry out integral disassembly, this can cause some originally normal components to appear spare parts loss, damage or installation not in place etc. Problems in the disassembly process, affect the normal operation of equipment, thereby increase the maintenance cost problem.

The application provides a vacuum drying method of a sodium ion battery cell, and belongs to the technical field of sodium ion battery manufacturing; the technical problem to be solved is that existing sodium ion battery pole pieces are prone to water absorption, and electrolyte is prone to hydrolysis; the technical solution for solving the technical problem is that: step 1: pretreating the cell; step 2: placing the cell into an oven, starting a vacuum system and a heating system in the oven; step 3.1: preheating the oven; step 3.2: starting an inert gas supply system, introducing inert gas into the oven for pulse purging, and controlling the heating system to perform vacuum pulse baking, the purging period of pulse purging is consistent with the baking period of vacuum pulse baking; step 4: turning off the heating system, and taking out the cell after the temperature in the oven is naturally cooled; wherein, one baking period comprises a temperature rising stage, a constant temperature stage and a temperature falling stage; the application is applied to the production of sodium ion battery energy storage and power batteries.

The utility model relates to the technical field of clamps, in particular to a pressing plate grabbing clamp for a numerical control grinding machine. The device comprises a fixed base, a supporting plate is arranged on one side of the fixed base, a pressing plate assembly is arranged at the top of the supporting plate, a transferring and grabbing assembly is movably arranged in the fixed base, a driving assembly is arranged on one side of the fixed base, and the driving assembly is connected with the transferring and grabbing assembly. Compared with a traditional manual clamping mode, the clamping time is greatly shortened, consumed time of auxiliary procedures is reduced, the effective machining time of grinding machine equipment can be prolonged, meanwhile, reworking caused by manual operation errors is avoided, and the overall machining efficiency is remarkably improved. Through automatic system control, positioning and fixing of a workpiece are kept consistent during clamping each time, the quality difference between products in batches is effectively reduced, the high-precision and large-batch production requirements are met, and especially in the fields of aerospace, precise instruments and the like with extremely high machining precision requirements, the product percent of pass and the yield can be remarkably improved.

The invention relates to the technical field of health-care food and functional food, and discloses a liver-protecting and hangover-alleviating composition which comprises the following components in parts by weight: the active component comprises 10-30 parts, preferably 20 parts, of a radix puerariae extract (puerarin content is greater than or equal to 40%); the content of total flavonoids is larger than or equal to 7%, and the content of dihydromyricetin is larger than or equal to 1%. The hovenia dulcis thunb extract is 10-30 parts, preferably 20 parts, and the oyster extract is 5-15 parts, preferably 10 parts, of the taurine content is larger than or equal to 10%, and the zinc content is larger than or equal to 0.5%. According to the liver-protecting and hangover-alleviating composition as well as the preparation method and the application thereof, based on the monarch, minister, assistant and guide theory of traditional Chinese medicine and the precise proportioning of modern pharmacological research, the triple effects of alleviating hangover, protecting liver and relieving discomfort are realized through the synergistic effect of the six active ingredients, animal experiments show that the ALT level of a rat with alcoholic liver injury can be reduced by 42.4%, the SOD activity can be improved by 39.4%, and the liver-protecting and hangover-alleviating composition can be used for preventing and treating alcoholic liver injury. And the effect is better than that of similar products with single component or simple compatibility.

The utility model discloses a kind of automatic encapsulation equipment for copper sheet production, it is related to copper sheet encapsulation technical field, encapsulation device, including table body, the table body top is separately equipped with automatic encapsulation mechanism, glue outlet module and three-axis grabbing manipulator, the glue outlet module is located automatic encapsulation mechanism side, the three-axis grabbing manipulator is located automatic encapsulation mechanism side;Feeding mechanism, fixed on table body, including material box assembly installed on table body, support is installed on the table body, vibration disc is installed on the support, vibration motor no. 1 is fixed in the vibration disc bottom.The utility model cooperates under the cooperation of vibration disc mechanism in feeding mechanism, without manually placing copper sheet one by one on adhesive film to be wrapped one by one, efficiency is high, quality difference reduces, automatically feeds, automatically grabs material, automatically encapsulates, improves encapsulation efficiency and encapsulation precision, saves certain worker workload.