Patent ID: 7719564

Claim:
A plug-in furnace and kiln-oriented video camera, comprising: a body of a video camera, a video recorder ( 23 ), a monitor ( 24 ) and a digital thermometer ( 25 ); wherein the body of a video camera comprises a video camera ( 19 ), a pick-up gun ( 16 ), a pipe-typed cooler ( 9 ), a sealing device ( 15 ), a sight hole ( 21 ), a blow-down ring ( 22 ), and a temperature measurement element ( 20 ); wherein the video camera ( 19 ) is installed at a front end of pick-up gun ( 16 ), inserted into the furnace through the pipe-typed cooler ( 9 ) installed at the flange short pipe ( 4 ) of a furnace shell; wherein the temperature measurement element ( 20 ) is located near the top of video camera ( 19 ) in pick-up gun ( 16 ); a ring gap 28 of said video camera ( 19 ) is formed between said blow-down ring ( 22 ) and said video camera ( 19 ); a double sealing structure of valve ( 13 ) and said sealing device ( 15 ); wherein said video camera ( 19 ) comprises a lens of wide angle, with an angle of view in the range of 90-120 degrees; a double gas protection for blow-down wind through the ring gap via an inner wind from sight hole ( 21 ) and an outside blow-down from sight hole ( 21 ); a video recorder ( 23 ), monitor ( 24 ) and digital thermometer ( 25 ) are placed outside the furnace shell, connected through a cable line to the video camera ( 19 ) and the temperature measurement element ( 20 ); wherein the furnace and kiln comprise a blast furnace of iron-smelting ( 1 ); wherein the video camera ( 19 ) is a micro video camera; wherein the pipe-typed cooler ( 9 ) has a diameter ranging up to 60-200 mm and a length ranging up to 200-3,000 mm; wherein the sight-hole ( 21 ) has an aperture up to Φ3-Φ15 mm; and wherein the width of the gap of the blow-down gap ( 28 ) is 0.2-3.0 mm.