Electronic expansion valve

An electronic expansion valve, comprising:

• a valve housing, wherein the valve housing is provided with an accommodating cavity and a valve port, and the accommodating cavity is in communication with the valve port;
• a valve needle, wherein the valve needle is provided with a first end and a second end that are arranged opposite each other, the second end of the valve needle blocks or opens the valve port, and the valve needle comprises a first guide section, a threaded section and a second guide section that are sequentially arranged, wherein the first guide section is arranged close to the first end of the valve needle, and the second guide section is arranged close to the second end of the valve needle;
• and
• a nut seat, wherein the nut seat is arranged in the accommodating cavity and is fixedly connected with the valve housing, a first through hole is provided on the nut seat, and the first through hole comprises a first guide hole section, a threaded hole section and a second guide hole section that are sequentially arranged, wherein the valve needle is arranged in the first through hole in a penetrating manner, the first guide hole section is cooperated with the first guide section for guiding, the threaded hole section is in threaded connection with the threaded section, and the second guide hole section is cooperated with the second guide section for guiding;
• the valve needle further comprises a third guide section, wherein the third guide section is arranged on a side of the first guide section away from the threaded section;
• and
• the electronic expansion valve further comprises a magnetic rotor, wherein the magnetic rotor is arranged in the accommodating cavity, and the magnetic rotor is fixedly connected with the third guide section;
• wherein the valve needle is an integral structure formed by the first guide section, the threaded section, the second guide section and the third guide section.