Chain tensioning device of pipe chain conveyor and pipe chain conveyor

The utility model provides a pipe chain conveyor chain tensioning device and a pipe chain conveyor. The pipe chain conveyor chain tensioning device comprises a pipe shell adjusting device, a sealing device and a tensioning driving device. The two ends of the tube shell adjusting device are sleeved with a first tube and a second tube respectively. The two ends of the sealing device are connected with the ends, close to the pipe shell adjusting device, of the first pipe and the second pipe respectively. The sealing device wraps the tube shell adjusting device; the tensioning driving device is arranged at the end, away from the pipe shell adjusting device, of the first pipe or the second pipe. The tensioning device is arranged at the connecting pipe position with a simple structure, is convenient to adjust and low in failure rate, and greatly reduces the manufacturing and later maintenance cost. 本实用新型提供了一种管链输送机链条张紧装置及管链输送机,包括管壳调节装置、密封装置和张紧驱动装置；所述管壳调节装置两端分别套接有第一管和第二管；所述密封装置两端分别连接所述第一管和第二管靠近所述管壳调节装置的端部；所述密封装置包裹所述管