Contaminant backflow prevention straw and contaminant backflow prevention device having the same

Abstract

The present invention relates to a contaminant backflow prevention straw and a contaminant backflow prevention device including the same, the straw including: a sucking portion for sucking a beverage stored in a container therein; a discharging portion for discharging the beverage sucked through the sucking portion; a contaminant discharging portion formed between the sucking portion and the discharging portion to discharge the beverage flowing backward from the discharging portion to the sucking portion to the outside of the container; and a guide blocking screen formed at an intersecting portion of the sucking portion, the discharging portion, and the contaminant discharging portion to allow the sucking portion and the discharging portion to communicate with each other during the suction of the beverage and to allow the discharging portion and the contaminant discharging portion to communicate with each other during backward flowing of the beverage.

1 . A contaminant backflow prevention straw comprising:
 a sucking portion  20  for sucking a beverage stored in a container therein;   a discharging portion  30  for discharging the beverage sucked through the sucking portion  20 ;   a contaminant discharging portion  40  formed between the sucking portion  20  and the discharging portion  30  to discharge the beverage flowing backward from the discharging portion  30  to the sucking portion  20  to the outside of the container; and   a guide blocking screen  60  formed at an intersecting portion  50  of the sucking portion  20 , the discharging portion  30 , and the contaminant discharging portion  40  to allow the sucking portion  20  and the discharging portion  30  to communicate with each other during the suction of the beverage and to allow the discharging portion  30  and the contaminant discharging portion  40  to communicate with each other during backward flowing of the beverage.   
     
     
         2 . The contaminant backflow prevention straw according to  claim 1 , further comprising an extension portion  70  extended by a given range from the intersecting portion  50  of the sucking portion  20 , the discharging portion  30 , and the contaminant discharging portion  40  toward one side direction of the intersecting portion  50  so as to allow the rotation of the straw to be easily controlled. 
     
     
         3 . The contaminant backflow prevention straw according to  claim 1 , wherein the guide blocking screen  60  is replaced with a blocking member  60   a  having a spherical, curved or polygonal shape. 
     
     
         4 . A contaminant backflow prevention device comprising:
 a contaminant backflow prevention straw  10  having a sucking portion  20  for sucking a beverage stored in a container  200  therein, a discharging portion  30  for discharging the beverage sucked through the sucking portion  20 , a contaminant discharging portion  40  formed between the sucking portion  20  and the discharging portion  30  to discharge the beverage flowing backward from the discharging portion  30  to the sucking potion  20  to the outside of the container  200 , and a guide blocking screen  60  formed at an intersecting portion  50  of the sucking portion  20 , the discharging portion  30 , and the contaminant discharging portion  40  to allow the sucking portion  20  and the discharging portion  30  to communicate with each other during the suction of the beverage and to allow the discharging portion  30  and the contaminant discharging portion  40  to communicate with each other during backward flowing of the beverage;   a container straw  220  having one side disposed at the inside of the container  200  and the other side connected to the sucking portion  20  of the contaminant backflow prevention straw  10 ; and   a case  300  mounted on top of the container  200  and comprising a straw passage  310  formed on one side thereof to pass the container straw  220  therethrough, a storage space  320  formed therein to accommodate and store the beverage in which contaminants are contained flowing thereto through a coupling portion  330  connected to the contaminant discharging portion  40  of the contaminant backflow prevention straw  10 , and a discharging outlet  340  formed on the underside thereof to discharge the beverage in which the contaminants are contained accommodated in the storage space  320  to the outside.   
     
     
         5 . A contaminant backflow prevention device comprising:
 a contaminant backflow prevention straw  10  having a sucking portion  20  for sucking a beverage stored in a container  200  therein, a discharging portion  30  for discharging the beverage sucked through the sucking portion  20 , a contaminant discharging portion  40  formed between the sucking portion  20  and the discharging portion  30  to discharge the beverage flowing backward from the discharging portion  30  to the sucking portion  20  to the outside of the container  200 , and a guide blocking screen  60  formed at an intersecting portion  50  of the sucking portion  20 , the discharging portion  30 , and the contaminant discharging portion  40  to allow the sucking portion  20  and the discharging portion  30  to communicate with each other during the suction of the beverage and to allow the discharging portion  30  and the contaminant discharging portion  40  to communicate with each other during backward flowing of the beverage;   a container straw  220  having one side disposed at the inside of the container  200  and the other side connected to the sucking portion  20  of the contaminant backflow prevention straw  10 ;   a case  300  mounted on top of the container  200  to have a hollow shape and comprising an incised portion  350  formed on one side thereof, a storage space  320  formed therein to accommodate and store the beverage in which contaminants are contained flowing thereto through a coupling portion  330  connected to the contaminant discharging portion  40  of the contaminant backflow prevention straw  10 , and a discharging outlet  340  formed on the underside thereof to discharge the beverage in which the contaminants are contained accommodated in the storage space  320  to the outside; and   space adjusting means  400  mounted on the incised portion  350  to adjust the space formed on the incised portion  350  in accordance with the diameters of the container  200 .   
     
     
         6 . The contaminant backflow prevention device according to  claim 4 , wherein the case  300  has circumferential grooves  360  spaced apart from each other along the outer peripheral surface thereof in such a manner as to allow the case  300  to be easily rotated. 
     
     
         7 . The contaminant backflow prevention device according to  claim 5 , wherein the space adjusting means  400  comprises:
 a space fixing portion  410  formed at one side of the incised portion  350 ; 
 a space adjusting bar  420  of a given length having fixing protrusions  422  formed sequentially on the front surface thereof and one end fixed to the space fixing portion  410 ; and 
 a space adjusting portion  430  formed at the opposite side of the incised portion  350  to fix the fixing protrusions  422  of the space adjusting bar  410  thereto. 
 
     
     
         8 . The contaminant backflow prevention device according to  claim 5 , wherein the case  300  has circumferential grooves  360  spaced apart from each other along the outer peripheral surface thereof in such a manner as to allow the case  300  to be easily rotated.