Foam generator for compression receptacles

A foam generator for a compression receptacle, mounted to a neck of the compression receptacle having liquid contents stored therein for mixing the liquid contents, discharged out of the compression receptacle when the compression receptacle is compressed, with air and discharging the mixed liquid contents in a form of foam, wherein the foam generator comprises:

• a cap main body comprising a large cap part fastened to the neck of the compression receptacle in a screw coupling manner, an upward and downward movement guide wall disposed at an outside of the large cap part, the upward and downward movement guide wall being formed in a shape of a cylinder, and a foam discharge part protruding from an upper part of the large cap part in a shape of a pipe having a diameter while a step is formed at a lower end thereof, an upper part of the foam discharge part being open, an air hole for allowing external air to be introduced therethrough being formed in the step;
• a content discharge guide configured such that an edge thereof is fitted, received, and disposed in an upper end of the large cap part of the cap main body so as to be spaced apart from a lower part of the step of the cap main body, the content discharge guide comprising a discharge guide part having a liquid discharge port formed in a central region thereof so as to be recessed concavely and a tube coupling port provided at a center of a bottom surface of the discharge guide part, a discharge tube for discharging the liquid contents stored in the compression receptacle being coupled to the tube coupling port, the discharge guide part being provided at an edge thereof with an air discharge port, through which air in the compression receptacle can move to an upper side of the discharge guide part when the compression receptacle is compressed, and with an air introduction port, through which external air is introduced into the compression receptacle when the compression receptacle is restored to an original state thereof;
• a check valve unit made of an elastic material, the check valve unit comprising a ring-shaped partition wall, having a lower end disposed in tight contact with an upper surface of the content discharge guide and an upper end disposed in tight contact with the lower part of the step of the cap main body, for defining an air and liquid mixing chamber in the foam discharge part, a first check valve part disposed inside the partition wall so as to extend downward toward a central part thereof, an end of the first check valve part being disposed in elastically tight contact with the discharge guide part of the content discharge guide, the first check valve part being configured to selectively allow the air in the compression receptacle to move to the air and liquid mixing chamber through the air discharge port when the compression receptacle is compressed, and a second check valve part disposed outside the partition wall so as to extend upward toward an outside, an end of the second check valve part being disposed in elastically tight contact with an outside of the step of the cap main body, the second check valve part being configured to close the air hole when the compression receptacle is compressed and to open the air hole when the compression receptacle is restored to the original state thereof such that external air can be introduced;
• a filtration member fitted, received, and disposed in the foam discharge part of the cap main body, the filtration member being formed in a shape of a cylinder having open upper and lower parts, the filtration member being provided at upper and lower surfaces thereof with filtration nets, the filtration member being configured to guide a discharge of foam formed as a result of the liquid contents being mixed with air in the air and liquid mixing chamber while homogenizing the foam;
• and
• an upward and downward movement cap comprising a cylindrical wall surface having a lower end received in and coupled to the upward and downward movement guide wall of the cap main body so as to be movable upward and downward and an upper surface configured to cover an upper part of the cap main body, the upper surface being provided with a plurality of foam distribution holes, through which the foam that has passed through the filtration member is discharged to the outside in a distributed manner, the upward and downward movement cap being provided at a center of the upper surface thereof with a cylindrical blocking wall for selectively opening and closing the foam discharge part according to an upward and downward manipulation thereof.