Sandblasting apparatus

Abstract

A sandblasting apparatus comprises a sand tube for the input of sand particles, a fluid tube for the input of a fluid substance, the fluid tube and the sand tube cooperatively defining an acute angle; a mixing chamber communicating with the sand tube and the fluid tube, a major output tube communicating with the mixing chamber; and an auxiliary output tube including a first part and a second part. The first part communicates with the mixing chamber and the second part. The second part extends towards the major output tube, offset from the axial direction of the first part. The axis of the second part and the axis of the major output tube cooperatively define an acute angle.

1 . A sandblasting apparatus, comprising:
 a sand tube for inputting sand particles;   a fluid tube for inputting fluid substance, the fluid tube and the sand tube cooperatively defining an acute angle β;   a mixing chamber connecting and communicating with the sand tube and the fluid tube, the mixing chamber providing a room mixing the sand particles and the fluid substance therein;   a major output tube connecting and communicating with the mixing chamber; and   an auxiliary output tube including a first part and a second part, one end of the first part connecting and communicating with the mixing chamber, another end of the first part connecting and communicating with the second part, the second part offsetting from the axial direction of the first part and extending towards the major output tube, the axis of the second part and the axis of the major output tube cooperatively defining an acute angle θ.   
     
     
         2 . The sandblasting apparatus as claimed in  claim 1 , wherein the major output tube is substantially coaxial with the mixing chamber and the fluid tube. 
     
     
         3 . The sandblasting apparatus as claimed in  claim 2 , wherein the acute angle θ is about 30 degrees to about 60 degrees. 
     
     
         4 . The sandblasting apparatus as claimed in  claim 3 , wherein the acute angle θ is 45 degrees. 
     
     
         5 . The sandblasting apparatus as claimed in  claim 2 , wherein the first part and the major output tube cooperatively define an acute angle γ. 
     
     
         6 . The sandblasting apparatus as claimed in  claim 5 , wherein the acute angle γ is no larger than 45 degrees. 
     
     
         7 . The sandblasting apparatus as claimed in  claim 1 , wherein the acute angle θ is about 30 degrees to about 60 degrees. 
     
     
         8 . The sandblasting apparatus as claimed in  claim 1 , wherein the first part and the major output tube cooperatively define an acute angle γ. 
     
     
         9 . The sandblasting apparatus as claimed in  claim 1 , wherein one end of the second part away from the first part defines an auxiliary outlet, one end of the major output tube away from the mixing chamber defines an major outlet, the vertical distance between the auxiliary outlet and the mixing chamber is substantially equal to that between the major outlet and the mixing chamber. 
     
     
         10 . The sandblasting apparatus as claimed in  claim 1 , wherein one end of the sand tube away from the mixing chamber defines sand inlet. 
     
     
         11 . The sandblasting apparatus as claimed in  claim 1 , wherein one end of the fluid tube away from the mixing chamber defines fluid inlet. 
     
     
         12 . The sandblasting apparatus as claimed in  claim 1 , wherein all of the sand tube, fluid tube, and major output tube are tubular and straight.