Reinforcement valve for preventing backflow in drain trap

Abstract

The present invention relates to a reinforcement valve for preventing a backflow in a drain trap, which can be additionally installed inside a drain trap, which can perform the air backflow phenomenon pre-contributing to the quality of the quality of the drain trap and to performance improvement thereof, and which always has the best backflow blocking function regardless of a strong air pressure generated inside the drain trap and any change thereof. A conventional drain trap has a water gathering portion (20) formed beneath a trap body (10); an inflow-side drain tube (30) and a discharged-side drain tube (40) are connected to one side and the other side thereof, respectively, such that draining occurs therethrough; a blocking membrane (60) is configured between the water inflow opening (31) And the water discharge opening (41); and a water drain hole (51) is bored between the blocking membrane (60) and the bottom surface inside the trap body (10). Th e present invention is configured by installing a backflow-preventing reinforcement valve (100) on the front side of the blocking membrane (60), in which the water drain hole (51) is formed, such that, when water is drained from the corresponding household, the same is automatically opened by the water pressure, thereby allowing water to drain, and, when water draining is completed, the same is automatically closed by self-weight, thereby guaranteeing, through control, that, even if a strong air flow is introduced into the drain trap, no backflow of air occurs.

1 . On the underside of the trap body ( 10 ), a water gathering portion ( 20 ) is formed that can hold a certain amount of water. On one side and the other side of the water gathering ( 20 ) mentioned above, an inflow-side drain tube ( 30 ) containing a water inflow opening ( 31 ) to allow drainage of water to flow in is connected with the discharged-side drain tube ( 40 ) containing water discharge opening ( 41 ) to allow the inflow of water to be discharged outwards. In addition, between the water inflow opening ( 31 ) mentioned above and the water discharge opening ( 41 ) consists of a blocking membrane ( 60 ) locked to a certain depth from the surface of the water pooled in the water gathering portion ( 20 ). Between the inner floor of the blocking membrane ( 60 ) and the trap body ( 10 ), a water drain hole ( 51 ) with a certain size is drilled, so in principle, it is impossible to reverse the odor due to the water gushed in the water gathering portion ( 20 ) mentioned above.
 On the front of the blocking membrane ( 60 ) mentioned in which the above water drain hole ( 51 ) is formed, the water is automatically opened according to the water pressure when the water is drained from the corresponding generation. An additional reinforcement valve ( 100 ) is installed to prevent backflow, which allows drainage but automatically closes by the gravity even if a strong airflow is introduced after drainage and controls the flow of air into the drainage trap to prevent the backflow of air.   
     
     
         2 . In the  claim 1 ,
 The backflow-preventing reinforcement valve ( 100 ) may be made of metal or plastic material and is constructed with the support ( 61 , 101 ) drilled with a hinge hole ( 61   a,    101   a ) at the top and at the frontside of the blocking membrane ( 60 ) at the corresponding location. With the counteracting effect from each other constructed, a hinge pin ( 102 ) is inserted to enable free rotational motion.   
     
     
         3 . In the  claim 1 ,
 In the backflow-preventing reinforcement valve ( 100 ),   The outer perimeter is formed with a cover ( 111 ) with a constant thickness and consists of an empty vent ( 110 ), which is allocated a constant volume of free space ( 112 ).   The suction force groove ( 120 ) was then drilled in the upper part of the empty vent ( 110 ) to allow the suction force to affect the inner cavity ( 112 ) of the reinforcing valve ( 100 ) for preventing foul backflow.   In addition, at the bottom of the upper part of the empty vent ( 110 ) mentioned above, water inflow grooves ( 130 ) that provide a path for a certain amount of water to flow into the inner cavity ( 112 ) according to the to the suction force were formed. These are the features of the backflow-preventing reinforcement valve in the drain trap.   
     
     
         4 . In the  claim 3 ,
 Among the suction force groove ( 120 ) and the water inflow grooves ( 130 ) formed at the front top of the empty vent ( 110 ) where the inner cavity ( 112 ) mentioned above is allocated,   Compared to the suction force flow ( 120 ) mentioned above, water inflow grooves ( 130 ) were formed in larger sizes. In doing so, this backflow-preventing reinforcement valve gained the feature of allowing water to flow more effectively through the water inflow grooves ( 130 ) mentioned above.   
     
     
         5 . In the  claim 3 ,
 On the inner side between the above suction force groove ( 120 ) and the water inflow groove ( 130 ),   A backflow-preventing reinforcement valve of drainage traps is characterized by the formation of a water suction induced section ( 141 ), which induces suction power by blocking some of the inner cavity ( 112 ) with a demarcation membrane ( 140 ).   
     
     
         6 . In the  claim 5 ,
 In case of a demarcation membrane ( 140 ) blocking between the suction force groove ( 120 ) and the water inflow groove ( 130 ) to form a water suction induced section ( 141 ), which induces the suction force, the feature of the backflow-preventing reinforcement valve in the drain trap acts like below. On the upper and lower parts of the front section of the empty vent ( 110 ), there exists one or more water outlet ( 140 ) and air hole ( 150 ) are added to secure the path through the remainder of the empty vent ( 110 ) of the inner cavity ( 112 ) except the suction force groove ( 120 ) and the water inflow grooves ( 130 ).