7 results about "Vacuum mixing" patented technology

The application provides a vacuum mixing process optimization method and system, which comprises collecting mixing container cavity pressure, jacket temperature, material torque, stirring speed, and air extraction flow signal, calculating pressure change rate, torque fluctuation amplitude, air extraction amount per unit time, and pressure fluctuation characteristic quantity, dividing the vacuum mixing process into four stages of initial exhaust, bubble release, viscosity climb, and densification stability; in the initial exhaust section, the vacuum valve opening degree and time length are controlled according to the air extraction amount and the pressure change rate, and the pressure response delay is recorded; in the bubble release section, an air extraction and stop alternating sequence is generated, and the air extraction and stop time length is corrected in combination with the delay; in the viscosity climb section, the target pressure interval is determined according to the torque, temperature, and pressure change rate, and the speed and valve opening degree are cooperatively adjusted to stabilize the pressure; in the densification stability section, a stability criterion is constructed, and the valve opening degree is controlled as needed; when adjacent stages are switched, the target pressure starting point, valve opening degree initial value, speed initial value, and control period of the next stage are corrected according to the end parameters of the previous stage.

The utility model discloses sausage stuffing vacuum stirring device, including the blender, the blender inside rotation is connected with two groups of rotating shafts, the rotating shaft outside rotation is connected with a plurality of groups first rotating link, first rotating link outside fixed connection has the stirring piece, first rotating link one end fixed connection has the connecting gear, the connecting gear one side is connected with the rack, the rack sliding connection is in the rotating shaft outside, the rack one end penetrates the blender fixed connection has the connecting plate, the connecting plate inside screw thread connection has the first screw rod, first screw rod tail and blender rotation is connected, can change the angle of stirring blade according to different types of meat stuffing, can aim at the real -time change of material characteristic in the process of stirring sausage stuffing.

This invention relates to the field of mixing device technology, specifically a vacuum mixing material preparation device, including a cylinder, a cylinder cover, a rotating shaft, a mixing paddle assembly, a counterweight compensation assembly, a vacuum tube, a drive component, an equipment box, a lifting mechanism, and a wear warning structure. The upper end of the counterweight compensation assembly extends upward through the rotating shaft, and the wear warning structure is connected to the protruding end of the counterweight compensation assembly to achieve visual monitoring of the wear degree of the mixing paddle. This invention uses a radially sliding mixing paddle assembly, in conjunction with the internal counterweight compensation assembly, to form a linkage transmission, achieving automatic wall-adhesion compensation after the scraper wears, ensuring that the scraper end is always in close contact with the inner wall of the cylinder, eliminating scraper failure and material accumulation and residue problems, thus ensuring the uniformity of material mixing and avoiding material waste; at the same time, the wear warning structure enables visual monitoring of the wear state, allowing for timely replacement of the scraper, greatly improving the convenience of equipment operation and maintenance.

This invention discloses a highly active ceramic-collagen composite bone scaffold and its preparation method, belonging to the field of bone repair material preparation technology. Quaternized ammonium inorganic material inclusions, photosensitive resin, and dispersant are mixed and ball-milled to obtain a mixed slurry. The mixed slurry is then printed to obtain a bioceramic porous scaffold green body. The bioceramic porous scaffold green body is sintered to obtain a bioceramic porous scaffold. The bioceramic porous scaffold is then vacuum-mixed with collagen fiber slurry, followed by post-treatment to obtain a ceramic-collagen composite scaffold. The ceramic-collagen composite scaffold is then impregnated with rhBMP-2 solution to obtain the highly active ceramic-collagen composite bone scaffold. The preparation method of this invention not only solves the mechanical properties of the prepared bone scaffold but also achieves good osteogenic effects.

This utility model provides a vacuum mixing device for moisturizing emulsions, including a reaction vessel tank and a detachable top cover. The reaction vessel tank and the top cover form a sealed cavity. A first drive motor is installed on the top of the top cover, and a first rotating shaft is installed at the output end of the first drive motor. The first rotating shaft passes through the top cover and moves within the cavity. Multiple connecting arms are evenly arranged axially at the front end of the first rotating shaft, and scrapers that fit against the inner wall of the reaction vessel tank are fixed on the connecting arms. A second drive motor is installed at the bottom of the reaction vessel tank, and a second rotating shaft is installed at the output end of the second drive motor. The second rotating shaft passes through the reaction vessel tank and moves within the cavity. Multiple stirring rods are evenly distributed axially on the second rotating shaft, and curved guide plates are installed on the multiple stirring rods. A stirring plate is fixedly installed at the front end of the stirring rods. The first rotating shaft and scrapers rotate counterclockwise, and the second rotating shaft and stirring rods rotate clockwise, so as to achieve efficient mixing of materials within the cavity.

This invention provides a high-precision cremated remains keepsake based on die casting and its preparation method, belonging to the field of funeral keepsake technology. Addressing the problems of low precision, poor efficiency, high cost, and difficulty in large-scale production in existing cremated remains keepsake molding processes, this invention designs a suitable die casting process based on the characteristics of calcium phosphate (CaP), the main component of cremated remains. This process includes raw material pretreatment, vacuum mixing, mold pretreatment and die casting, demolding and curing, and fine processing steps: the cremated remains are dried and secondarily ground to 150–200 mesh without any sieving; they are then vacuum mixed with a bio-based or inorganic binder in a specific ratio; die-cast under preset temperature and pressure parameters; and finely processed after targeted curing and maintenance. The keepsake prepared by this invention has a density ≥92%, excellent strength, exquisite appearance, and can achieve complex shapes. Furthermore, the process is stable and controllable, with no harmful residues, good biocompatibility, and is suitable for large-scale industrial production.

This invention relates to the field of welding materials technology, specifically disclosing a halogen-free solder material and its preparation method. The solder material comprises solder alloy powder and a halogen-free flux; the solder alloy powder includes Bi, In, Ag, Cu, rare earth element Y, and Sn; the halogen-free flux includes hydrogenated rosin, a thixotropic agent, a corrosion inhibitor, a catalytic adsorbent, a composite organic acid activator, and a balance solvent. The preparation method includes surface grafting synthesis of the catalytic adsorbent, flux formulation, alloy powder atomization, and vacuum mixing. This method, through a novel adsorption-catalysis-slow release mechanism, simultaneously achieves excellent wettability, extremely low solder joint void ratio, high-strength interfacial bonding, and outstanding resistance to thermal fatigue and corrosion, all while ensuring complete halogen-free soldering. The resulting solder joints are full, bright, and free of solder beads, comprehensively solving the balance problem between activity, reliability, and processability in halogen-free soldering.