59results about How to "Avoid powder leakage" patented technology

The invention discloses flux-cored silver solder. The silver solder comprises a silver-based solder outer layer and a silver brazing flux core placed inside the silver-based solder outer layer in a padded mode, and the silver-based solder outer layer is formed by rotating and rolling strip-shaped solder and is of a tubular structure provided with spiral lapped seams. The preparation method comprises the steps of smelting and producing out the strip-shaped silver-based solder according to a conventional method, and conducting roughening treatment on the inner surface; then rotating and rolling the strip-shaped solder into the tubular structure in a spiral shape, and adding silver brazing flux into the tube in the rolling process so that the flux core can be formed; producing out the flux-cored silver solder which meets the requirements through the rolling or drawing process. The flux-cored silver solder and the preparation method thereof have the advantages that the brazing flux can be added in advance conveniently and efficiently, the brazing process has the advantages of being convenient to assemble, easy to achieve automatized production, low in cost and the like, and it is facilitated to apply and promote the automatized brazing technique.

The invention provides an electric-arc fusion-cladding powder core wire, and a preparation method of a high-entropy alloy coating. The powder core wire is composed of a stainless steel strip and a powder core, wherein the thickness of the stainless steel strip is 0.8mm, and the powder core is powder of Mn, Cr, Fe, Ni, and Cu in a molar ratio of 2:2:2:2:1. A preparation method of the powder core wire comprises the following steps: (1) preparing the powder core; (2) paving powder and sintering; (3) performing cold rolling; and (4) coiling, drawing wires, reeling, installing coiled wires on a wire feeder, and spraying-deposing fused core wires on the surfaces of base materials by setting the electric-arc welding voltage to be 14 V, current to be 150A, and speed to be 8cm2 / min under the actionof 0.9MP high-pressure argon to form the high-entropy alloy coating.

The invention discloses a spiral discharging device for a dust collector. The spiral discharging device for the dust collector is provided with a first discharging shell and a second discharging shell. Dust conveying devices are further arranged in the first discharging shell and the second discharging shell respectively. Each dust conveying device comprises a spiral shaft and a spiral fixedly connected to the spiral shaft. The ends, stretching out of two adjacent side plates, of the spiral shafts installed on bearing seats on the side plates of the first discharging shell and the second discharging shell are connected with a universal rotary shaft through universal rotary shaft connecting flanges respectively. According to the spiral discharging device for the dust collector, the phenomenon that the discharging shells are swept and abraded due to falling and bending of the spiral shafts, and consequently dust leakage is caused is prevented, and checking and maintenance of the spiral shafts are facilitated; the field operating environment is improved, the equipment maintenance cost and workload are reduced, and continuous and stable operation of the spiral discharging device for the dust collector is achieved.

The invention provides a plant hollow capsule and a preparation method thereof, and belongs to the technical field of hollow capsule production. The plant hollow capsule is prepared from modified hydroxypropyl methylcellulose, gel, coagulant aid, plasticizer, surfactant and the balance of water, wherein the modified hydroxypropyl methylcellulose is prepared by adding a proper amount of microcrystalline cellulose into hydroxypropyl methylcellulose and performing uniform mixing. The plant hollow capsule has the beneficial effects that the capsule as certain moisturizing property besides the molding performance of a hydroxypropyl methylcellulose gel solution can be kept, moisture loss due to dryness and moisture absorption can be avoided in the storing process, shrinkage or expansion of a capsule shell can be avoided, occurrence of powder leakage can be effectively avoided, and the disintegrating speed of a capsule can be accelerated; the ductility and plasticization of the capsule can beimproved by properly adding the plasticizer, uniform wall thickness of the capsule can be guaranteed by combining with the gel; the disintegrating speed can be accelerated by properly adding the surfactant with the microcrystalline cellulose; and the friability can be effectively improved by properly adding the gel and the coagulant aid with the plasticizer.

The invention discloses a packaging paper roll film plane servo hole puncher. A supporting base is fixed to the ground. An installation plate is fixed to the supporting base. A constant tension unwinding mechanism is installed on one side of the installation plate. A servo constant speed winding mechanism is installed on the other side of the installation plate. Four paper film guiding shafts are installed between the constant tension unwinding mechanism and the servo constant speed winding mechanism. A driving box is arranged at the central position of the installation plate and connected with a driving wheel. A connecting rod is installed on the driving wheel and connected with a pin plate installation box through a movable hinge. A pin plate upper mold and a pin plate lower mold are installed inside the pin plate installation box. According to the packaging paper roll film plane servo hole puncher, the design of the constant tension unwinding mechanism, the paper film guiding shafts, the pin plate upper mold and the pin plate lower mold is adopted, the problems that holes are unevenly formed in packaging paper and paper films are scratched are solved, the phenomenon that powder is leaked or pollution is caused by a broken bag during packaging is avoided, efficiency is high, production is safe, the number of workers is saved, maximum production is achieved, and maximum benefits are brought to an enterprise.

The invention discloses a novel filling device of a capsule filling machine. The novel filling device comprises a filling position and a tamping position which are arranged along the circumference, wherein filling rods adaptively arranged in the filling position and the tamping position and matched with metering holes of metering panels arranged at the bottom end of a drug powder cylinder, the drug powder cylinder is filled with drug powder, the lower ends of the metering panels are fixedly connected with a support, a lower module for storing capsules is arranged under the filling position, slide sheets are arranged movably on the lower end surfaces, located at the metering holes, of the metering panels and are mounted in slide sheet bases provided with slide rods which are in slide fit with a guide hole in the support, the slide rods are fixedly connected with a support frame which is linked with a movable guide rail plate, the movable guide rail plate is inked with an upper swing armconnected with the upper end of a swing shaft, the lower end of the swing shaft is connected with a lower swing arm, the lower swing arm is linked with a groove-shaped cam through a bearing, and thegroove-shaped cam is driven by a spindle. Powder leakage is avoided, so that the drug powder is metered precisely, and cross contamination of the drug powder can be avoided in work.

The invention provides a 3D printer leakproof working cylinder. The 3D printer leakproof working cylinder comprises a first cylinder wall, a second cylinder wall, a first side plate, a second side plate, positioning rods and a piston plate; a rectangular channel structure is jointly defined by the first cylinder wall, the second cylinder wall, the first side plate and the second side plate; the first cylinder wall and the second cylinder wall are cooperatively connected through grooves in the first side plate and the second side plate; the first side plate and the second side plate are fastened and connected through the positioning rods; the piston plate slides in the rectangular channel; and the first cylinder wall and the second cylinder wall are made of glass or resin. The problems that3D printer working cylinders are insufficient in strength, and sand is prone to leaking are solved, the 3D printer leakproof working cylinder is convenient to dismount, mount and maintain and has good application prospects, on the basis of superior performance than original metal cutting machining, the cost is greatly reduced, the corrosion resistance is significantly improved, the especially inapplication of a large-sized piston cylinder blocks, the flatness of a whole board cannot be ensured by metal cutting machining easily, and the 3D printer leakproof working cylinder can be widely popularized in similar application.

The invention discloses flux-cored silver solder. The silver solder comprises a silver-based solder outer layer and a silver brazing flux core placed inside the silver-based solder outer layer in a padded mode, and the silver-based solder outer layer is formed by rotating and rolling strip-shaped solder and is of a tubular structure provided with spiral lapped seams. The preparation method comprises the steps of smelting and producing out the strip-shaped silver-based solder according to a conventional method, and conducting roughening treatment on the inner surface; then rotating and rolling the strip-shaped solder into the tubular structure in a spiral shape, and adding silver brazing flux into the tube in the rolling process so that the flux core can be formed; producing out the flux-cored silver solder which meets the requirements through the rolling or drawing process. The flux-cored silver solder and the preparation method thereof have the advantages that the brazing flux can be added in advance conveniently and efficiently, the brazing process has the advantages of being convenient to assemble, easy to achieve automatized production, low in cost and the like, and it is facilitated to apply and promote the automatized brazing technique.

The invention relates to a feeding device special for dry suspensions. The feeding device special for the dry suspensions is characterized in that a box body is composed of a metering plate with a metering tank, a left vertical plate, a right vertical plate, a rear vertical plate and a transparent front baffle, wherein supports with track idler wheels are installed at the left end and the right end of the upper surface of the metering plate respectively, an upper movable plate is supported on the top of the box body through the track idler wheels, a plurality of rotary shifting forks and a plurality of material blocking blocks are installed on the upper movable plate, and are inserted into the box body, the rotary shifting forks are connected with a micromotor through a chain drive mechanism, one end of the upper movable plate is connected with an output shaft of a servo motor through a left-and-right transmission mechanism, sliding unit bases are installed at the left end and the right end of the lower surface of the metering plate respectively, sliding rods are arranged in the sliding unit bases respectively, a lower movable plate is fixedly connected between the two sliding rods, feeding valves are arranged above the lower movable plate, and are connected with the lower movable plate through feeding hoppers, the upper surfaces of the feeding valves are closely attached to the lower surface of the metering plate, feeding ports are formed in the feeding valves, the feeding hoppers are communicated with the metering tank through the feeding ports, and the other ends of the sliding rods are connected with air cylinders. The feeding device special for the dry suspensions has the advantages of being accurate in feeding metering and free of powder leakage.

The invention discloses a printer toner cartridge which comprises a toner cartridge main body, wherein two ends of the toner cartridge main body are respectively a toner feeding part and a toner discharging part; an end cover which is of a hollow structure and is rotationally connected to a toner discharging part end; a powder stirring bin which is provided with a funnel bin body, wherein a toner outlet is formed in the bottom of the funnel bin body; an outer cover which is clamped on the powder stirring bin and covers the powder stirring bin and a clamping part; and a powder stirring group which comprises a stirring blade and a scraping blade, the stirring blade is rotatably arranged in the toner cartridge main body, and when the stirring blade drives the scraping blade to perform sweeping action in the funnel bin body, the toner is beat out from the toner outlet. A new toner discharging mode is achieved, continuous and uninterrupted toner supply is achieved, the toner supply efficiency is improved, smooth toner feeding is kept, interruption is avoided, and the efficiency and the printing quality are greatly improved; the communication end of the outer side of a toner outlet seat outside the powder stirring bin is redesigned to be a multi-stage climbing small step, and an arc-shaped rib is formed at the highest position of the step, so that the arc-shaped rib is in butt joint with an image developing device in a tighter matching position, and the phenomenon of powder leakage is prevented.