Tube expansion base

The invention provides a tube expansion base and relates to the technical field of U-shaped tube expanded connection. Through the tube expansion base, the technical problems that an existing tube expansion base is cleaned through manual regular blowing in the prior art and time and labor are wasted are solved. The tube expansion base comprises a base body and a U-shaped groove, and further comprises an air flow channel, wherein the air flow channel is arranged in the base body and communicates with the U-shaped groove. When an external air supply device communicates with the air flow channel,the air in the external air supply device can flow to the U-shaped groove through the air flow channel to clean the U-shaped groove. The self-cleaning effect of the tube expansion base can be realized. 本发明提供了一种胀管底座，涉及U型管胀接技术领域，解决了现有技术中存在的当前胀管底座的清洁采用人工定期进行吹扫，费时费力的技术问题。该装置包括底座本体和U型槽，还包括气流通道，其中，气流通道设置在底座本体上且与U型槽相连通，外部供气设备与气流通道连通时，外部供气设备内的气体能通过气流通道流向U型槽以用来对U型槽进行清洁。本发明用于实现胀管底座的"自清洁"。