5results about How to "Fast pumping" patented technology

The utility model provides a double injection die-casting vacuum system which comprises a vacuum pump, a die and a main negative pressure device, the main negative pressure device is communicated with a cavity of the die through a first pipeline, the first pipeline is provided with a first valve assembly used for controlling opening and closing of the pipeline, the die is provided with a sprue runner communicated with the cavity, and the sprue runner is provided with a second valve assembly used for controlling opening and closing of the first valve assembly. The double-injection die-casting vacuum system further comprises an auxiliary negative pressure device, the auxiliary negative pressure device is communicated with the sprue runner through a second pipeline, and the second pipeline is provided with a second valve assembly used for controlling opening and closing of the second pipeline. And the vacuum pump is respectively communicated with the main negative pressure device and the auxiliary negative pressure device so as to absorb airflow in the main negative pressure device and the auxiliary negative pressure device. The utility model solves the problem of poor casting quality caused by the fact that the cavity is filled with molten metal at a high speed and gas in the cavity and a sprue area cannot be timely exhausted in a double-injection die-casting process.

The utility model discloses an aluminum foil vacuum bag and relates to the technical field of packaging bags, the aluminum foil vacuum bag comprises a bag body, an opening is formed in one side of the bag body in the length direction, a plurality of first vent grooves and second vent grooves are formed in the bag body in a protruding mode in the direction away from the interior of the bag body, the first vent grooves are formed in the length direction of the bag body, and the second vent grooves are formed in the length direction of the bag body. The multiple first vent grooves are arranged in the width direction of the bag body at equal intervals, the multiple second vent grooves are arranged in the width direction of the bag body at equal intervals, the multiple first vent grooves and the multiple second vent grooves are communicated with each other, and the first vent grooves and the second vent grooves are wavy. When the vacuum bag is vacuumized, the multiple first vent grooves and the multiple second vent grooves can form an air exhaust channel in the bag body, and therefore air in the bag body can be rapidly evacuated.

The utility model discloses a nasal spray device which comprises a shell, a supply unit and a force storage mechanism, the supply unit is used for storing and outputting second fluid, and in an initial state, the supply unit is locked at a first position in the shell; and the force storage mechanism is connected with the supply unit, and the force storage mechanism is manually operated in advance to apply loading force to the supply unit, so that after unlocking, the supply unit can be ejected to a second position in the shell and outputs second fluid. According to the nasal spray device, loading force is applied in advance through the force storage mechanism, and triggering force can be provided at the unlocking moment, so that the pump assembly is promoted to rapidly pump out medicine, and then the medicine is delivered to a farther position.

The utility model relates to vacuum sealing machine technical field especially simple type plastic packaging bag vacuum sealing device, its technical scheme: including shell, the shell bottom is fixed with bottom shell, the vacuum pump is installed in the bottom shell, the shell upper end front side is equipped with the sealing cavity, the sealing cavity bottom rear side is equipped with the air extraction hole, the sealing cavity bottom and located the air extraction hole peripheral fixed sealing pad, the sealing cavity bottom front side is fixed with the electric heating wire, the sealing cavity is hinged with the flap, is provided with same sealing pad in the sealing cavity in the flap. The utility model sets up the transverse plate that stretches out in the annular sealing pad of air extraction, when air extraction, utilizes the transverse plate and inserts into the packaging bag, can quickly extract the gas in the packaging bag through the flow guide hole, effectively avoids the packaging bag opening to be extruded by the sealing pad, leads to the problem that the gas is difficult to discharge outward, improves the vacuumizing efficiency.

The utility model discloses a nasal spray device which comprises a shell, a supply unit and a force storage mechanism, the supply unit is used for storing and outputting second fluid, and in an initial state, the supply unit is locked at a first position in the shell; and the force storage mechanism is connected with the supply unit, and the force storage mechanism is manually operated in advance to apply loading force to the supply unit, so that after unlocking, the supply unit can be ejected to a second position in the shell and outputs second fluid. According to the nasal spray device, loading force is applied in advance through the force storage mechanism, and triggering force can be provided at the unlocking moment, so that the pump assembly is promoted to rapidly pump out medicine, and then the medicine is delivered to a farther position.