Glass plate for concrete conveying pump

Abstract

Disclosed in the present invention is a glass plate for a concrete conveying pump which comprises a steel base ( 2 ) with two feeding through holes ( 1 ), the end face of the steel base ( 2 ) is embedded and welded with a wear-resistant material slide joint surface ( 3 ); shear rings ( 4 ) are assembled in the two feeding through holes ( 1 ) of the steel base ( 2 ), and are provided with openings; grooves ( 5 ) are formed on inner circular faces of the feeding through holes ( 1 ); and outer circular faces of the shear rings ( 4 ) are provided with flanges ( 6 ) matched with the grooves ( 5 ). By the structure, a flange ring at one end of each shear ring ( 4 ) and counter sunk holes for accommodating the shear rings ( 4 ) on the steel base ( 2 ) are eliminated, and the interference of sealing grooves on the end face of the steel base ( 2 ) and the countersunk holes for accommodating the shear rings on the steel base ( 2 ) is avoided. Along the axis direction, a central parting plane of a shear ring ( 4 ) is taken as a symmetrical plane, the grooves ( 5 ) and the flanges ( 6 ) are symmetrical about the symmetrical plane, thus allowing the shear ring ( 4 ) to be utilized twice by the positive and negative surfaces.

1 . A glass plate for a concrete conveying pump, comprising a steel base with two feeding through holes thereon, the end face of the steel base is embedded and welded with a wear-resistant material slide joint surface, shear rings are assembled in the two feeding through holes of the steel base, which are provided with openings, characterized in that grooves are formed on inner circular faces of the feeding through holes, and outer circular faces of the shear rings are provided with flanges matched with the grooves. 
     
     
         2 . The glass plate for a concrete conveying pump as set forth in  claim 1 , characterized in that along the axial direction, a centrally dividing plane of the shear ring is taken as a symmetry plane, and the grooves and the flanges are symmetrically arranged with respect to the symmetry plane. 
     
     
         3 . The glass plate for a concrete conveying pump as set forth in  claim 2 , characterized in that all of the grooves and the flanges are continuous circumferentially. 
     
     
         4 . The glass plate for a concrete conveying pump as set forth in  claim 2 , characterized in that the groove comprises at least one groove arc segment in the circumferential direction, the flange matches the groove and comprises the same number of flange arc segments as that of the groove arc segments. 
     
     
         5 . The glass plate for a concrete conveying pump as set forth in  claim 2 , characterized in that the cross-sectional shape of the grooves and flanges is rectangular. 
     
     
         6 . The glass plate for a concrete conveying pump as set forth in  claim 1 , characterized in that an expansion device is provided at the opening of the shearing ring. 
     
     
         7 . The glass plate for a concrete conveying pump as set forth in  claim 6 , characterized in that the expansion device is composed of two mutually matching expansion wedge blocks, and two side surfaces of the two expansion wedge blocks that match with the shearing ring are both parallel to the axis of the shearing ring. 
     
     
         8 . The glass plate for a concrete conveying pump as set forth in  claim 7 , characterized in that the steel base is provided with radial holes that are open to the feeding through holes, a screw is provided within the radial hole, and a screw hole is formed on one of the expansion wedge blocks for threaded connection with the screw. 
     
     
         9 . The glass plate for a concrete conveying pump as set forth in  claim 7 , characterized in that the steel base is provided with a guide lifting groove that is open to the feeding through hole, and a guide ear that matches with the guide lifting groove is provided on one of the expansion wedge blocks. 
     
     
         10 . The glass plate for a concrete conveying pump as set forth in  claim 1 , characterized in that the steel base is provided with radial holes that are open to the feeding through holes, a screw is provided within the radial hole for fixing the shearing ring. 
     
     
         11 . The glass plate for a concrete conveying pump as set forth in  claim 5 , characterized in that an expansion device is provided at the opening of the shearing ring 
     
     
         12 . The glass plate for a concrete conveying pump as set forth in  claim 5 , characterized in that the steel base is provided with radial holes that are open to the feeding through holes, a screw is provided within the radial hole for fixing the shearing ring.