Sealing element for diverter valve

Abstract

Provided is a sealing element for a diverter valve, in which the sealing member is provided inside an upper portion of a diverter valve to prevent mud from being ejected upward as well as to increase durability, reduce manufacturing cost, and facilitate maintenance work, wherein the diverter valve prevents the mud from flowing backward into a drill pipe provided outside a drill bit and rising, prevents the rising mud from being ejected into a drilling site, and diverts a direction of the mud to refine and reuse the mud in the process of forming an oil well during drilling. Further, a plurality of recessed grooves is formed in the inner surface of the body, so that drilling operation time may be increased by minimizing damage and deformation, and the sealing element is constituted by a plurality of unit bodies, whereby manufacturing and maintenance costs may be reduced.

What is claimed is: 
     
         1 . A sealing element for a diverter valve, in which the sealing element ( 100 ) is provided inside the diverter valve ( 10 ) that diverts mud returning from an oil well to prevent the mud from being ejected during drilling, the sealing element ( 100 ) comprising:
 a body ( 130 ) formed at a center thereof with a through-hole ( 110 ) with a drill pipe ( 20 ) passing therethrough, and provided with a plurality of sealing wings ( 120 ) being configured such that lower ends thereof are integrally formed on an outer circumferential surface of the body, and upper ends thereof are bent inward to protrude,   wherein the body ( 130 ) includes a plurality of recessed grooves ( 132 ) provided on an inner surface ( 112 ) of the through-hole ( 110 ) in a vertical direction.   
     
     
         2 . The sealing element of  claim 1 , wherein the recessed grooves ( 132 ) include:
 a plurality of upper recessed grooves ( 132   a ) provided on an upper boundary ( 140 ) between an upper surface ( 133 ) of the body ( 130 ) and the inner surface ( 112 ) of the through-hole ( 110 ); and   a plurality of lower recessed grooves ( 132   b ) provided on a lower boundary ( 150 ) between a lower surface ( 134 ) of the body ( 130 ) and the inner surface ( 112 ) of the through-hole ( 110 ).   
     
     
         3 . The sealing element of  claim 2 , wherein the upper recessed grooves ( 132   a ) and the lower recessed grooves ( 132   b ) are configured such that widths thereof are gradually narrow toward lower and upper portions of the inner surface ( 112 ) of the through-hole ( 110 ), respectively. 
     
     
         4 . The sealing element of  claim 1 , wherein the body ( 130 ) includes a plurality of unit bodies ( 135 ), with one sealing wing ( 120 ) provided in each of the unit bodies, and
 the unit bodies ( 135 ) are configured such that each of the unit bodies ( 135 ) is brought into close contact with a side of a neighboring unit body ( 135 ) to form the through-hole ( 110 ).