The invention relates to a three-roller inner pressure automatic cloth inlet (or outlet) sealing device used on a high pressure steaming flat roll continuous dyeing and finishing machine in the weaving and printing and dyeing industry. The cloth inlet (or outlet) sealing device is characterized in that an air cylinder drives a sealing cover to elevate, overturn and open and the invention is fixed by a multi-hook inclined fastening strip and the sealing body can be brought to the front upper of a tank body, which is convenient for washing, maintenance, disassemble and installation. One tender can control quickly and flexibly at any time only. The invention has convenient operation, labor saving and time saving. The end seal is divided into the upper and the lower sections; the vertical seal is combined by sections. The invention automatically regulates the sealing by the inner pressure, the invention has the advantages of stable sealing performance, small size of whole machine, light weight, strong burden ability, dye saving and steel saving and suitability of continuous production. |