Abstract: A fixing device for the dust bag of a dust collector includes a dust collector provided with a wind guide box having its lower side formed with a stuff falling opening, which extends downward to form a ring body. The wind guide box has its outer circumference provided with two tightening units, and an annular frame is connected between the two tightening units and positioned beneath the ring body. The two tightening units can adjust the annular frame to be at a first position or at a second position able to quickly fix or disassemble the dust bag of a dust collector.

Abstract: A fixing device for the dust bag of a dust collector includes a dust collector provided with a wind guide box having its lower side formed with a stuff falling opening, which extends downward to form a ring body. The wind guide box has its outer circumference provided with two tightening units, and an annular frame is connected between the two tightening units and positioned beneath the ring body. The two tightening units can adjust the annular frame to be at a first position or at a second position able to quickly fix or disassemble the dust bag of a dust collector.

Abstract: The present invention relates to a carbon dioxide dispenser and a cap (2) for introducing carbon dioxide to a bottle (1). The carbon dioxide dispenser of the invention comprises a pressurized carbon dioxide source, such as a pressure vessel (3), a pressure regulator (7), flow means (4, 6) for feeding carbon dioxide from the carbon dioxide source to a bottle, and said cap (2) provided with a valve for connecting said means to the bottle (1). The present invention provides a carbon dioxide dispenser which is easy to handle and has a reliable valve means which can be used by anyone without any risk of explosion during use. The invention also provides a carbon dioxide dispenser for effectively distributing the introduced carbon dioxide in the bottle. For this purpose the cap (2) comprises in its end facing the bottle (1) a distribution means (8) for atomizing the carbon dioxide so that, when flowing into the bottle, it is more effectively absorbed by the beverage in the bottle.