Pneumatic ball valve is evolved from globe valve. It has the same 90-degree rotating lift action, except that the cock body is a sphere with a circular through hole or channel passing through its axis. The ratio of the spherical surface to the channel opening should be such that when the ball rotates 90 degrees, spherical surfaces should appear at the inlet and outlet, thereby cutting off the flow. The pneumatic ball valve uses a pneumatic actuator, which only needs to rotate the air source 90 degrees to securely close a small rotational torque. The valve's perfectly equal cavities provide a straight flow path with little resistance to the medium. Pneumatic ball valves are generally considered a good choice for direct opening and closing, but recent developments have designed ball valves to throttle and control flow. The main feature of pneumatic ball valve is compact structure, convenient operation and maintenance, suitable for water, solvent, acid, natural gas and other general operating media and oxygen, hydrogen peroxide and other harsh operations and labor-saving operation, because the ball is supported by the upper and lower bearings, reducing friction and reducing imports Excessive sealing load due to huge sealing load due to pressure propulsion. eliminate. Balls and Seal Sheets.
Pnevmatik balli klapan ishonchli muhrlanish funktsiyasiga ega. Zanglamaydigan po'latdan yasalgan klapan o'rindig'iga PTFE bir-seks materiali muhrlash halqasi o'rnatilgan. Metall klapan o'rindig'ining uchi muhrlash halqasining yetarlicha oldindan siqish kuchiga ega bo'lishini ta'minlaydi-va kuchlanish prujinasi bilan jihozlangan. Vana sirtlari foydalanish paytida eskiradi va vana bahorda ishlash vaqtida yaxshi muhrlanish funktsiyasini ta'minlashda davom etadi. Yong'inga chidamli tuzilma, to'satdan issiqlik yoki yong'in tufayli PTFE sızdırmazlık halqasining yonishini oldini olish uchun to'p tanasi va pnevmatik sobit balli valfning valf o'rindig'i o'rtasida yong'inga chidamli sızdırmazlık halqasi o'rnatiladi. Ayni paytda, valf o'rindig'ining muhrlangan halqasi bahor kuchi ta'sirida sferaga tezda bosiladi, shuning uchun metallar o'rtasida ma'lum bir muhrlanish ta'siriga ega bo'lgan muhr hosil bo'ladi. Yong'inga chidamlilik testi AP16FA va API607 spetsifikatsiyalari talablariga javob beradi. Faol bosimni yumshatish funktsiyasi, vana bo'shlig'idagi turg'un muhitning bosimi g'ayritabiiy ravishda ko'tarilganda va bahorning oldingi -tortish kuchidan oshib ketganda, faol bosimni kamaytirish ta'sirini bajarish uchun valf o'rindig'i shardan tortib olinadi, va vana o'rindig'ining bosimi bo'shatilgandan keyin avtomatik ravishda tiklanadi. Drenaj trubkasida yuqori va pastki valf korpuslarida drenaj teshiklari mavjud va valf o'rindig'i oqayotganligini tekshiring. Ish paytida, agar vana to'liq ochilgan yoki to'liq yopilgan bo'lsa, yadro bo'shlig'idagi bosim: uni to'g'ridan-to'g'ri olib tashlash va o'rashni almashtirish mumkin. Valfning muhit bilan ifloslanishini kamaytirish uchun saqlovchi suyuqlikni yadro bo'shlig'iga to'kib tashlang.
Pnevmatik sobit balli klapan yordamchi o'rindiqni mahkam muhrlash tizimining dizaynidan foydalanadi. Agar muhr shikastlangan bo'lsa yoki favqulodda vaziyatda muhrlanmasa, muhrlash uchun yordamchi muhr tizimidan foydalaning. Sızdırmazlık yuzasi sirtga mos keladigan plomba moddasini quyish orqali zudlik bilan ta'mirlanishi mumkin. Agar tashish vositasi iflos bo'lsa yoki zarrachalar miqdori past bo'lsa, muhrlangan sirtni himoya qilish va mustahkam muhrni ta'minlash uchun mos keladigan detarjan yoki moylash vositasini kiritish orqali ham tozalanishi mumkin. Pnevmatik sobit balli klapanlar oziq-ovqat, tibbiyot, neft, kimyo sanoati, tabiiy gaz, po'lat, atrof-muhitni muhofaza qilish va qog'oz ishlab chiqarish kabi quvurlarni kesish yoki aylanishda keng qo'llaniladi.
