| 摘要 |
<p>The device is used as a household appliance. It has improved design. The device includes a fixing element (17) for a casing (1) having an endpiece for connection to the barrel to which an airtight sealed small tube for beer (2) is mounted under pressure with a valve and an element for opening. The casing (1) has a spiral-shaped slot (3) with a pitch corresponding at least the stroke of opening of the opening element of the valve (9). A bayonet bushing (4) having a slot (3'), corresponding to the first slot of an oppositely fitted guiding edge (26) is inserted from the upper side of the casing (1). The outlet, open from below, is connected to the guiding edge (26). Between the bayonet bushing (4) and the casing (1) a hollow opening piston (6) with a facility for movement and with an element for opening the valve (9) is connected to a small circular raising lever (7) which gets across slots (3,3'). Opposite to them a counteracting plug (8) is fitted matching the guiding edge (26). A submerged piston (13) with O-rings (10, 11 & 12) is fitted in the opening piston (6) which O-rings form a pressure chamber (14) sealed to the opening piston (6) having a connecting hole (15) to it. The small beer tube (2) having a lower sealing (16) is fitted in the submerged piston (13) Between piston (13) and small tube (2) a cavity is formed serving as pressure chamber (37). The casing (1) has a transition bushing (18) connected to the fixing element (17). Opposite the bushing (18), the opening piston (6) with an upper O-ring (19) is tightly mounted, and a lateral hole (20) passes across the piston under the O-ring.</p> |
