صمام الفراشة هو صمام يستخدم قرصًا دائريًا كجزء فتح وإغلاق ويدور مع ساق الصمام لفتحه, close and adjust the fluid channel. The disc of the butterfly valve is installed in the diameter direction of the pipe. Earlier applications began with the air volume regulation baffle on the flue or chimney, and were also used in low-pressure systems such as ventilation or gas supply. In recent years, the metal seal butterfly valve has developed rapidly, with the application of high temperature resistance, low temperature resistance, مقاومة تآكل قوية, strong erosion resistance, high strength alloy materials in the butterfly valve, so that the metal seal butterfly valve has been widely used in high temperature, درجة حرارة منخفضة, strong erosion and other working conditions, and partially replaced the globe valve, gate valve and ball valve.
There are many types of butterfly valves, among which the most common classification method is according to the structural form (the position of the rotating center line of the valve stem is different), which can be divided into the following four kinds:
- Center offsetbutterfly valve
- Single offsetbutterfly valve
- Double offsetbutterfly valve
- Tripleoffset القرص صمام الفراشة
فضلاً عن ذلك, there are many other ways to classify butterfly valves.
Butterfly valve drive mode classification
هوائي actuator صمام الفراشة
ال هوائي actuator صمام الفراشة is composed of a pneumatic actuator and a butterfly valve. يتم فتح صمام الفراشة الهوائية وإغلاقه مع لوحة الفراشة الدائرية تدور مع جذع الصمام, ويستخدم الصمام الهوائي الذي تم تبديله بشكل أساسي كصمام قطع, التي يمكن استخدامها كتبديل وتطبيق ضبط. الآن صمام الفراشة يتم تطبيقه في خطوط أنابيب كبيرة ومتوسطة القطر عالية الضغط.
كهربائي actuator صمام الفراشة
صمام الفراشة الكهربائي مدفوع بمشغل كهربائي, وعادة ما يكون مصدر الطاقة العاملة: AC220V, AC380V, إلخ. إشارة الدخل: 4~ 20ma 0 ~ 10V والإشارات الضعيفة الأخرى. بعد أن يتم تثبيت وتعديل الجذع الكهربائي التنظيمي, لوحة صمام الفراشة مدفوعة بالطاقة الكهربائية كقوة دافعة لجعل حركة دوران عكسي جزئي من 0 إلى 90 درجة. Receive the 4~20mA signal of the industrial automation control system to accurately control the valve switching degree, so as to achieve the adjustment and control of different demand parameters such as flow, درجة حرارة, ضغط, إلخ.
Manual butterfly valve
Manual butterfly valve is a traditional, no mechanized improvement, the need for manual operation of the butterfly valve, although the degree of automation is low, but still plays a relatively large role in the industrial field.
Gate valves also come in many varieties
Like the butterfly valve, the gate valve as a switch valve, there are many classifications. على سبيل المثال:
According to the lifting mode of the stem, the gate valve can be divided into rising stem resilient seated gate valve and non rising stem resilient seated gate valve.
The stem of the صمام البوابة غير المرتفع المرتفع only rotates and does not move up and down, and only one valve stem of non rising stem resilient seated gate valve is exposed. Its nut is fixed on the gate, through the rotation of the stem to lift the gate, so you can not see the door frame; The stem of the rising stem resilient seated gate valve is exposed, and the nut is fixed tightly to the handwheel (no rotation, no axial movement). By rotating the stem to lift the gate, the stem and gate only have relative rotation movement, there is no relative axial displacement, and the appearance is a portal bracket.
China high quality butterfly and gate vales here
FLUID TECH GROUP is a professional valve manufacturer in China, known for high quality and excellent service, all kinds of valves we have professional production lines to ensure to meet your needs. في هذه المقالة, we briefly mentioned several commonly used butterfly valves and gate valves, which are also part of our main products. You are welcome to continue browsing our website for more information.