Pipe connector

A pipe connector for connecting to a first pipe, comprising:

• a second pipe having a plurality of connection sections of difference outer diameters, one of which is capable of being fittingly coupled to the first pipe;
• and
• a fastener comprising:
• an inner barrel sleeving on the first pipe;
• an outer barrel sleeving on and threadedly coupled with the inner barrel, the outer barrel comprising an annular stop portion extending inward from an end thereof and distant from the inner barrel;
• a slide-guiding barrel located between the first pipe, the inner barrel, and the outer barrel, the slide-guiding barrel defining a plurality of beveled surfaces and a plurality of guiding grooves in the respective beveled surfaces, the beveled surfaces facing the annular stop portion and being arranged around the first pipe, both the beveled surfaces and the guiding grooves extending toward the center of the pipe connector and away from the annular stop portion;
• and
• a plurality of sliding blocks positioned on the respective beveled surfaces, each of the sliding blocks comprising a first side surface contacting the first pipe and a second side surface pressed by the annular stop portion when the outer barrel threadedly slides toward the inner barrel to force the sliding block to slide toward the center of the pipe connector along a corresponding guiding groove such that the first side surface presses the first pipe toward the second pipe.