Hot washing device with hollow rod

The utility model relates to the field of well-washing and wax-cleaning devices in the industry of petroleum exploitation, in particular to a hot washing device with a hollow rod. The hot washing device with the hollow rod comprises a main body (4) and an underground communicating valve (8), wherein a secondary ball valve (6) is fixedly arranged at an entrance of a transverse passage of the main body (4); a thimble (3) is arranged in the transverse passage of the main body (4) and corresponds to the entrance; the underground communicating valve (8) is fixedly connected with a lower passage of the main body (4) through the hollow rod; an O-shaped ring (2) is arranged on the thimble (3); a clamp spring (5) is fixedly arranged at a position where the end part of the thimble (3) is in contact with the main body (4); a gland (1) is fixedly arranged on the end part of the transverse passage of the main body (4) in which the thimble (3) is arranged; and a connecter (7) is fixedly arranged at the entrance of the seco