Pressure container

Abstract

A pressure container includes a first casing, a second casing, and a sealing member. A deformable membrane is mounted in the first casing, defining a water chamber that is communicated with a water inlet in the first casing. An air chamber is delimited by the deformable membrane and the second casing. The sealing member includes an inner ring, an outer ring surrounding the inner ring, and a connecting ring connecting the inner ring with the outer ring. The inner ring, the outer ring, and the connecting ring together define a first groove and a second groove respectively on two sides of the connecting ring. A flange on an end of the deformable membrane and an open end of the first casing are sealingly received in the first groove. An open end of the second casing is sealingly received in the second groove.

1 . A pressure container comprising: 
 a first casing including a closed first end and an open second end, the closed first end of the first casing including an inlet through which water flows;    a deformable membrane mounted to an inner periphery of the first casing, defining a water chamber that is in a side of the deformable membrane and that is communicated with the inlet of the first casing, the deformable membrane including a flange on an end thereof;    a second casing including a closed first end and an open second end, an air chamber being delimited by the deformable membrane and the second casing;    a sealing member including an inner ring, an outer ring surrounding the inner ring, and a connecting ring connecting the inner ring with the outer ring, the inner ring, the outer ring, and the connecting ring together defining a first groove and a second groove respectively on two sides of the connecting ring, the flange of the deformable membrane and the open second end of the first casing being sealingly received in the first groove, the open second end of the second casing being sealingly received in the second groove.    
   
   
       2 . The pressure container as claimed in  claim 1  wherein the outer ring includes a plurality of engaging grooves, the open second end of the first casing including a plurality of engaging members respectively engaged in the engaging grooves.  
   
   
       3 . The pressure container as claimed in  claim 1  wherein the outer ring includes a plurality of engaging grooves, the open second end of the second casing including a plurality of engaging members respectively engaged in the engaging grooves.  
   
   
       4 . The pressure container as claimed in  claim 2  wherein the open second end of the second casing includes a plurality of engaging members respectively engaged in the engaging grooves.  
   
   
       5 . The pressure container as claimed in  claim 1  wherein the first casing includes a plurality of ribs on an outer periphery of the open second end of the first casing, the pressure container further including a covering layer that covers the ribs and that is flush with an outer face of the outer ring.  
   
   
       6 . The pressure container as claimed in  claim 1  wherein the second casing includes a plurality of ribs on an outer periphery of the open second end of the second casing, the pressure container further including a covering layer that covers the ribs and that is flush with an outer face of the outer ring.  
   
   
       7 . The pressure container as claimed in  claim 5  wherein the wherein the second casing includes a plurality of ribs on an outer periphery of the open second end of the second casing, the pressure container further including a covering layer that covers the ribs of the second casing and that is flush with the outer face of the outer ring.  
   
   
       8 . The pressure container as claimed in  claim 1  wherein the pressure container further includes a lining mounted along an inner periphery of the second casing and an inner face of an end wall of the closed first end of the second casing.  
   
   
       9 . The pressure container as claimed in  claim 1  wherein the lining is made of nylon.  
   
   
       10 . The pressure container as claimed in  claim 9  wherein the second casing is made of polypropylene.  
   
   
       11 . The pressure container as claimed in  claim 8  wherein the lining is formed by means of injection molding and the second casing is then formed and bonded with the lining by means of injection molding.  
   
   
       12 . The pressure container as claimed in  claim 9  wherein the lining is formed by means of injection molding and the second casing is then formed and bonded with the lining by means of injection molding.  
   
   
       13 . The pressure container as claimed in  claim 10  wherein the lining is formed by means of injection molding and the second casing is then formed and bonded with the lining by means of injection molding.  
   
   
       14 . The pressure container as claimed in  claim 1  wherein the second casing includes a valve, allowing inflation of air into the air chamber.  
   
   
       15 . The pressure container as claimed in  claim 1 , wherein the flange of the deformable membrane includes a protrusion on a side thereof, the open second end of the first casing including an annular groove in an end face thereof for fittingly receiving the protrusion.