Ƙa'idar Aiki na Tushen Vacuum Pump

Tushen injin famfoyana nufin madaidaicin injin injin famfo sanye take da rotors masu sifar ruwa guda biyu waɗanda ke jujjuya aiki tare a saɓanin kwatance. Akwai ƙaramin rata tsakanin rotors da tsakanin rotors da bangon ciki na rumbun famfo ba tare da haɗuwa da juna ba. Matsakaicin yawanci shine 0.1 zuwa 0.8 mm; Ba a buƙatar man mai. Bayanan martabar rotor sun haɗa da layin baka, layukan da ba za a iya amfani da su ba, da cycloids. Adadin amfani da ƙarar famfon involute rotor yana da girma kuma daidaiton injin yana da sauƙin tabbatarwa, don haka bayanin martabar rotor galibi na nau'in involute ne.

Ka'idar aiki ta aTushen injin famfoyayi kama da na Tushen busa. Saboda ci gaba da jujjuyawar na'urar, iskar gas ɗin da aka zub da shi yana tsotse cikin sarari v0 tsakanin rotor da harsashi na famfo daga mashigar iska, sannan a fitar da shi ta tashar shaye-shaye. Tun da sararin v0 ya rufe gaba daya bayan shakarwa, babu matsawa ko fadada iskar gas a cikin ɗakin famfo. Amma lokacin da saman na'ura mai juyi ya zagaya gefen tashar shaye-shaye kuma sararin v0 yana da alaƙa da ɓangaren shaye-shaye, saboda yawan iskar iskar gas a gefen shaye-shaye, wasu iskar gas ɗin sun sake komawa cikin sararin samaniya v0, wanda ya haifar da iskar gas don ƙara ba zato ba tsammani. Yayin da rotor ke ci gaba da juyawa, ana fitar da iskar gas daga famfo.