Sealing device of spile of flue

The utility model discloses a sealing device of a spile of a flue, which comprises a flue (1) and a spile (2). The utility model is characterized in that the upper part and the lower part of the spile (2) are respectively connected with a stainless steel plate (3). Compared with the prior art, the sealing device has the following advantages that: 1. the stainless steel plates additionally arranged at both sides of the hydraulic spile of the flue are difficult to deform under the environment of the fume temperature which is 200 DEG C, and therefore, the sealing effect is better; on one hand, the draft force of a main flue is reinforced, and on the other hand, maintaining the environmental sanitation becomes convenient; 2. the stainless steel plates and the spile are welded, and therefore, the replacement is convenient; 3. since the stainless steel plates are additionally arranged at both sides of the spile and resist high temperature and are not easy to abrade, the service life of the sealing device is greatly