Burner capable of automatically switching long flame and short flame

Abstract

The utility model discloses an automatic long and short flame switching burner, relates to the field of burners, and aims to solve the problems of long time and high cost caused by the fact that different requirements on working conditions of flame length are generally met by replacing burners in the prior art, and adopts the technical scheme that the automatic long and short flame switching burner comprises an air pipe, an air inlet is formed in the right side of the air pipe, and an air outlet is formed in the right side of the air pipe; a burner mounting flange is arranged on the air pipe, the air pipe is fixedly mounted on equipment through the burner mounting flange, a gas pipe is slidably connected to the center of the end of the air pipe above the burner mounting flange, a sealing structure is arranged on the contact portion of the gas pipe and the air pipe, an air cylinder is arranged on the left side of the air pipe, and a gas outlet is formed in the air cylinder. A piston rod of the air cylinder is connected with the gas pipe, and idler wheels are arranged above the air pipe.

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