Gas Pumping Apparatus or Soda Machine

Abstract

A gas pumping apparatus for soda machine pumps gas into a liquid container and includes a gas supplying unit, a gas pumping stage and a rotational unit. The gas supplying unit includes a gas tube and a handgrip with a block extended on one side of the handgrip. The gas pumping stage includes a gas inlet connector communicated with the gas tube and fixing ring communicated with the gas inlet connector. The fixing ring includes through groove and guiding groove communicated with the through groove. The liquid container includes a locking block embedded into the guiding groove and fixed in the through groove. The rotational unit includes a rotational piece with a first extension arm and a second extension arm. The first extension arm is corresponding to the block of the handgrip and the second extension arm is arranged in the through groove for the operation of the locking block.

1 . A gas pumping apparatus for a soda machine, pumping gas into a liquid container and comprising:
 a gas supplying unit comprising a gas container and a fixing stage sealed to the gas container, a valve being arranged on the fixing stage, a gas tube being communicated with the valve and a handgrip being used for controlling open and close of the valve, a block being extended from one side of the handgrip;   a gas pumping stage comprising a panel, a gas inlet connector communicated with the gas tube of the gas supplying unit, a fixing ring arranged below the gas inlet connector and connected to the panel and communicated with the gas inlet connector, a plurality of through grooves below the fixing ring and a guiding groove communicated with the through grooves, a plurality of locking blocks arranged on an opening of the liquid container and embedded into the through grooves, and a projective shaft arranged on one side of the fixing ring; and   a rotational unit comprising a rotational piece with an axial cover capping the projective shaft of the gas pumping stage, a first extension arm extended from the axial cover and a second extension arm separated with the first extension arm, the first extension arm corresponding to the block and the second extension arm being arranged in the through groove for operation by the locking block.   
   
   
       2 . The gas pumping apparatus for soda machine as in  claim 1 , further comprising a gas pumping shaft communicated with the gas inlet connector and downward extended from center of the fixing ring. 
   
   
       3 . The gas pumping apparatus for soda machine as in  claim 1 , wherein the first extension arm is extended upward from the axial cover, and the second extension arm is extended downward from the axial cover and has 180 degree with the first extension arm. 
   
   
       4 . The gas pumping apparatus for soda machine as in  claim 3 , wherein the first extension arm comprises a bump engaged with the block of the handgrip. 
   
   
       5 . The gas pumping apparatus for soda machine as in  claim 1 , wherein the second extension arm comprises a locking groove at a distal end thereof and arranged in one through groove. 
   
   
       6 . The gas pumping apparatus for soda machine as in  claim 5 , wherein the locking groove is of U shape. 
   
   
       7 . The gas pumping apparatus for soda machine as in  claim 3 , wherein the rotational piece comprises a third extension arm extended upward from the axial cover and vertical to the first extension arm. 
   
   
       8 . The gas pumping apparatus for soda machine as in  claim 1 , wherein the rotational unit further comprises a torque spring clamped between the rotational piece and the panel, and upper and lower ends of the torque spring are clamped to the panel and the first extension arm, respectively. 
   
   
       9 . The gas pumping apparatus for soda machine as in  claim 1 , further comprising a pressure leaking device, the pressure leaking device comprising a degas tube, the panel being provided with a gas outlet connector communicated with the fixing ring, and the degas tube being communicated with the gas outlet connector to expel excessive gas in the liquid container.