| 摘要 |
<p>The device comprises a cavity (4) provided with an opening (6). A wall (7) surrounds the cavity and includes a set of flow openings (5) for guiding a suction unfolding gas from an inner portion of the cavity to outside, where the flow openings are suction openings. The suction openings are connected on an outer side of the cavity. A unit is used to generate negative pressure in the suction flow. The suction openings are opened into a vacuum chamber into which the negative pressure is generated. The cavity is provided with a cup-shaped hollow body (10). The device comprises a cavity (4) provided with an opening (6). A wall (7) surrounds the cavity and includes a set of flow openings (5) for guiding a suction unfolding gas from an inner portion of the cavity to outside, where the flow openings are suction openings. The suction openings are connected on an outer side of the cavity. A unit is used to generate negative pressure in the suction flow. The suction openings are opened into a vacuum chamber into which the negative pressure is generated. The cavity is provided with a cup-shaped hollow body (10). A housing of the vacuum chamber surrounds the hollow body. A gas return duct surrounds the vacuum chamber, and forms a gas outlet port. An outer housing is arranged within the gas return duct. A gas discharge nozzle is arranged in a center of the cavity for discharging the gas stream in a radial direction, where the gas discharge nozzle is height adjustable. A set of intake openings are arranged in an imaginary plane vertically above the downwardly directed opening of the cavity. A set of projecting protrusions are arranged in the wall of the cavity. A set of projections are formed in an edge of the opening of the cavity. A set of ventilation openings is arranged between two suction openings in a circumferential direction of the wall of the cavity. A gripper head is arranged at an end of a gripping arm of a gripper assembly. A filter unit is arranged in the gas return duct.</p> |
