Abstract: A soda machine having sub-unit locked, comprising main body (1), main (2) sub-unit (3). The main body (1) comprises housing (4), base (5), steel cylinder (6), air outlet mechanism (72), pivot cavity (8) provided at upper part of housing (4), further comprises shifting block holder (22), shifting block (21), locking stopper (24), pressure spring (25). A pivot head of shifting block (23) insert into pivot groove (221), end part of substrate part (231) fits shifting block holder (22) at the upper part, lower part of pivot groove (221) for stopping; locking lever part (242) of the locking stopper (22) penetrates through pressure spring (25) guide hole (104) to extend into sleeve (101); cylindrical head (241) sliding fit guide cylinder (102), the locking lever part (242) sliding fit guide hole (104), transverse rod part (243) is in sliding fit guide groove (103) extends out of guide groove (103); transverse rod part (243) is in sliding fit with inclined pressing plate part (232).

Abstract: A soda maker having convenient gas intake and discharge comprises main, auxiliary unit. Main unit comprises housing, base, carbon dioxide cylinder provided within the housing, gas intake main body provided at top of carbon dioxide cylinder, gas intake support, gas intake connecting rod, locking engagement member. The auxiliary unit comprises outer casing, auxiliary unit main body, water bottle, tapered ring, soda bottle. The auxiliary unit main body provides gas discharge valve and switch valve. The housing provides installation hole. The soda maker further comprises pivoting base having side and top opening. The pivoting base fixed within housing, pivoting plate passes through installation hole, half shaft is pivoted half shaft hole. While operation, positioning protrusion engages with operation positioning blind hole, axis of connecting part parallels to horizontal plane, gas discharge valve engages end plate of pivoting base, switch valve engages locking engagement member.

Abstract: A pressure-adjustable pneumatic system of soda machine, comprising upper cover (1), air inlet support (2), air distribution valve (3), sub-machine support (5), safety valve (8), piston-type pressure driving device (9), and further comprising driving base (41), knob (42), driving gear (43), driving wheel set (44), driven wheel set (45), drive gear (46). The first (41) and the second gear (2) connected driving wheel set; first gear (441) matches with driving gear (43); rotating shaft (453) fitted with driven wheel, the upper end of the rotating shaft is fixedly connected to speed reducing wheel (451), the lower end of the rotating shaft is connected to shaft body (4521) of driven gear (452); drive gear (46) is fixedly connected to shaft head (9421), also (46) extends into circular counter bore (2A) through hole, the driven gear (452) is located in the circular counter bore (2A), engaged with the drive gear (46); handheld part (421) of the knob (42) extends out of the upper cover (1) through knob hole (1A).

Abstract: A pressure-regulating-type sub-machine of soda machine is provided, comprising positioning seat, sub-machine upper housing, sub-machine main body, sub-machine bottom cover, conical ring, water bottle connecting port, gas nozzle rod, soda bottle; wherein the sub-machine upper housing includes upper-opening arc-shaped guide cavity and provided at the edge of the top, fixed shaft, arc-shaped rack, middle transmission wheel, driving gear; arc-shaped guide cavity has radial outer sidewall with guide groove having upper opening, radial inner side wall provided with through hole; the middle transmission wheel comprises upper and lower gear; the arc-shaped rack sliding fit the arc-shaped guide cavity, middle transmission wheel is rotatably fitted the fixed shaft, arc-shaped rack meshes with lower gear; driving gear is fixedly connected upper end of adjustment nut, driving gear meshes with upper gear, operating rod fitted the guide groove slidably; lower end of the positioning seat and guide groove form guide hole.

Abstract: A sub-machine of a soda fountain with an adjustable exhaust velocity includes a main body, a water bottle connector, a housing, a taper ring, a bottom cover, a positioning seat, an air inlet assembly, an air nozzle rod, an exhaust valve, a soda bottle, a connecting seat, an exhaust knob and key, the connecting seat covers an upper opening of an exhaust valve cavity, the valve rod passes through a guide hole a lower surface of the exhaust key is attached to a flat seat plate part; a circular body part extends into an arc-shaped part, the exhaust key is nested into an exhaust key cavity, and a handle part extends out from a guide notch; the exhaust key is in sliding fit with an inclined surface part. Due to this structure, the handle part is operated to rotate the exhaust knob, so as to perform exhaust and adjust the exhaust velocity.

Abstract: A check valve on a sub-machine of a soda fountain includes a main body of the sub-machine and an air nozzle rod, where the air nozzle rod is connected to the main body, the main body is provided with an internal thread cavity with a lower opening and an air inlet channel communicated with the internal thread cavity, and the air nozzle rod is provided with a check valve cavity with an external thread; the check valve further includes a check valve assembly, the check valve assembly is arranged in the check valve cavity, and the check valve cavity is screwed and hermetically sealed with the internal thread cavity. Such a structure can prevent air flow from flowing back and improve the sealing performance is improved, and is convenient to assemble.