Odor control apparatus for drains

Abstract

An odor control apparatus for drains, which is installed at a drain, for easily discharging sewage and preventing odor from flowing backward. The odor control apparatus for drains is installed at a drain, which has a drain pipe connected to a drain hole formed through an indoor bottom, and a drain upper plate provided with a plurality of through holes and attached to the upper end surface of the drain hole, and includes an odor control body having a flange formed on the upper end thereof and caught by the upper end of the drain pipe; a fixed body including an upper body having a support rim caught by a protrusion formed on the inner surface of the odor control body, and a protruding lower body having a drain hole; and a movable body, ascending and descending based on the amount of sewage.

1 . An odor control apparatus for drains, installed at a drain, which has a drain pipe connected to a drain hole formed through an indoor bottom, and a drain upper plate provided with a plurality of through holes and attached to the upper end surface of the drain hole, said odor control apparatus comprising: 
 an odor control body having a flange formed on the upper end thereof and caught by the upper end of the drain pipe;    a fixed body comprising an upper body having a support rim caught by a protrusion formed on the inner surface of the odor control body, and a protruding lower body having a drain hole, a diameter of which is extended downwardly from the central portion of the upper body; and    a movable body supported by the fixed body with elastic members, ascending and descending based on the amount of sewage to determine the drainage state of the drain, and preventing the backward flow of odor in cooperation with the fixed body, said movable body comprising: 
 a support rim formed on the outer surface of the movable body for causing the movable body to be supported by the upper portion of the fixed body with the elastic members;  
 a drain pipe protruding downwardly from the central portion of the movable body for discharging sewage therethrough;  
 a large drain outlet having the same shape as that of the lower body, connected to the drain hole of the lower body, and formed through the lower end of the drain pipe;  
 a plurality of drain slits formed through a wall of the large drain outlet for rapidly discharging a large amount of sewage therethrough; and  
 a small drain outlet formed through a bottom of the large drain outlet for discharging a small amount of sewage therethrough.  
   
   
   
       2 . An odor control apparatus for drains, installed at a drain, which has a drain pipe connected to a drain hole formed through an indoor bottom, and a drain upper plate provided with a plurality of through holes and attached to the upper end surface of the drain hole, said odor control apparatus comprising: 
 a fixed body located at the upper end of the drain pipe, and comprising a drain surface sloping downward for rapidly discharging sewage and a drain hole having a diameter, which gradually extends, and formed through the lower portion of the drain surface; and    a movable body having a small drain outlet, located under the fixed body, connected to the fixed body with a connecting unit, and descending when the sewage is discharged, said movable body comprising: 
 an airtight surface formed on a support rim formed on the outer surface of the movable body and having the same shape as that of the drain hole so that the airtight surface is connected to the drain hole so as to maintain an airtight state therebetween; and  
 a collecting space formed in the central portion of the movable body for collecting the sewage to be discharged.  
   
   
   
       3 . An odor control apparatus for drains, installed at a drain, which has a drain pipe connected to a drain hole formed through an indoor bottom, and a drain upper plate provided with a plurality of through holes and attached to the upper end surface of the drain hole, said odor control apparatus comprising: 
 a fixed body having a pipe shape, and including a support rim formed at the upper end of the fixed body and caught by the upper end of the drain pipe, and a drain hole formed through the lower portion of the fixed body and having a gradually reducing diameter;    a movable body having a small drain outlet, located under the fixed body, connected to the fixed body with a connecting unit, and descending when sewage is discharged, said movable body comprising:    a collecting space formed in the movable body for temporarily collecting sewage; and    upper and lower level surfaces, an upper sloping side surface sloping upward, and a lower sloping side surface sloping downward, said surfaces forming the movable body in a buoy shape,    wherein the lower portion of the upper sloping side surface is connected to the drain hole of the fixed body so as to maintain an airtight state therebetween, and a plurality of discharge holes for discharging the sewage to the small drain outlet are formed through the upper sloping side surface.    
   
   
       4 . The odor control apparatus as set forth in  claim 1 , wherein the small drain outlet comprises: 
 a small drain pipe protruding downwardly from the bottom of the large drain outlet; and    an intercepting unit provided in the small drain pipe for intercepting odor, which flows backward from the drain pipe, said intercepting unit comprising: 
 an intercepting plate connected to a designated portion of the outer circumferential surface of the small drain pipe with a hinge and covering the lower end surface of the small drain pipe; and  
 a weight body provided at the outside of the hinge and serving to maintain the closed state of the intercepting plate.  
   
   
   
       5 . The odor control apparatus as set forth in  claim 1 , wherein the small drain outlet is an N-shaped drain pipe.  
   
   
       6 . The odor control apparatus as set forth in  claim 2 , wherein the connecting unit comprises: 
 an operating rod protruding upwardly from the center of the collecting space of the movable body;    a cylinder formed under the center of a drain upper plate located on the fixed body for containing the operating rod;    a stopper fixed to the upper end of the operating rod and covered with a cap so as to prevent the stopper from being separated from the operating rod; and    a spring interposed between the stopper and a protrusion formed on the inner surface of the lower end of the cylinder for ascending the movable body,    wherein a discharge groove for discharging the sewage from the collecting space to the small drain outlet is formed in the lower portion of the operating rod.    
   
   
       7 . The odor control apparatus as set forth in  claim 2 , wherein: 
 the fixed body is supported by an odor control body, which is connected to the upper end of the drain pipe and has a plurality of drain slits formed through the lower end and the side surface thereof;    a bottom of the collecting space of the movable body slopes in one direction; and    the small drain outlet is formed through a portion of a wall of the collecting space, at which the bottom is low.    
   
   
       8 . The odor control apparatus as set forth in  claim 3 , wherein the connecting unit comprises: 
 a guide bar located under the center of a drain upper plate laid on the fixed body, extending downward, and passing through a guide hole formed through the center of the movable body; and    an elastic body interposed between a stopper provided on the lower end of the guide bar and the bottom surface of the movable body for ascending the movable body in a normal state.