| 摘要 |
The invention relates to the food industry, and specifically to commercial equipment, and can be used for dispensing beer and other foaming and carbonated beverages from an isobaric container. The device includes a drainage channel (3) which is connected by means of a three-way flow switching device (2) to tubes for feeding gas and beverage, a node (4) for securing the neck of a plastic bottle (5) to the open end of the drainage channel (3), and a control valve (11) which is connected to the drainage channel (3). The three-way flow switching device (2) contains axially-symmetric cavities (13, 14) with seats, and, installed in the seats, spring-loaded valves (15, 16), the stems (19, 20) of which are kinematically connected to a shaped surface (21) of a rotating element (22). The rotating element (22) is rigidly connected to a control handle (23) for the alternating opening of the valves (15, 16) or for ensuring that the valves (15, 16) are in an initial closed state. The axially-symmetric cavities (13, 14) with seats are connected by means of inner channels (7, 8) to the drainage channel (3) and to the tubes for feeding gas and beverage. The three-way flow switching device (2) is installed in the housing of the device and can be removed therefrom. The axially-symmetric cavities (13, 14) with seats for accommodating the blocking components of the valves (15, 16) are positioned, in the inner channels (7, 8) of the flow switching device (2), transversely relative to the channels (7, 8). Portions of the stems (19, 20) of the valves (15, 16) with springs (17, 18) are positioned, and the rotating element (22) is positioned, in the cavities of the inner channels (7, 8) of the flow switching device (2). The valves (15, 16) with stems (19, 20) and the rotating element (22) which comes into contact with same are made of thermoplastic having an allowable compressive stress of 55-100 MPa, and a surface of the stems (19, 20) of the valves (15, 16) which comes into contact with the shaped surface (21) of the rotating element (22) is developed in the form of a portion of a second-order curve. |
