功能介绍 Function introduction

进口电动硬密封蝶阀(对夹，法兰）主要由法兰或对夹式三偏心蝶阀与电动执行器连接组成。蝶阀开启时，碟板即刻分离阀座密封面，减少了与密封面相互之间的摩擦和干涉，大大提升了蝶阀的使用寿命。且碟板及阀座密封面均采用不锈钢材质制成，从而使蝶阀的防腐蚀性、耐温性、耐压性以及耐磨性得到了可靠的保证，属于高性能节能型电动蝶阀 retz Imported electric hard seal butterfly valve (wafer, flange) is mainly composed of flange or wafer three-eccentric butterfly valve and electric actuator. When the butterfly valve is opened, the disc plate immediately separates the sealing surface of the valve seat, reducing the friction and interference between the valve seat and the sealing surface, and greatly improving the service life of the butterfly valve. The sealing surface of the disc plate and valve seat are made of stainless steel, so that the corrosion resistance, temperature resistance, pressure resistance and wear resistance of the butterfly valve can be reliably guaranteed. It is a high-performance energy-saving electric butterfly valve.

设计特色 Design features

1、三偏心结构：阀杆轴线与蝶板密封面间偏置一个尺寸，并与阀体通道轴线偏置一个尺寸，阀座回转轴线与阀体通道轴线形成一个偏心角，故形成三偏心。蝶阀从0°～90°开启时，蝶板密封面会在开启的瞬间立即脱离阀座密封面，在其90°～0°关闭时，只有在关闭的瞬间，其蝶板圆锥形密封面才会接触并压紧阀座圆锥形密封。所以阀座与蝶板上的密封面之间无任何摩擦，去除了磨损和泄漏的可能性 Three-eccentric structure: the valve rod axis is offset by one dimension from the sealing surface of the butterfly plate, and offset by one dimension from the valve body channel axis. The valve seat rotation axis forms an eccentric angle with the valve body channel axis, thus forming a three-eccentric structure. When the butterfly valve is opened from 0 ° to 90 °, the sealing surface of the butterfly plate will immediately disengage from the sealing surface of the valve seat at the moment of opening. When the butterfly valve is closed at 90 ° to 0 °, the conical sealing surface of the butterfly plate will contact and press the conical sealing surface of the valve seat only at the moment of closing. Therefore, there is no friction between the valve seat and the sealing surface on the butterfly plate, which eliminates the possibility of wear and leakage

2、扭矩密封：三偏心的结构使蝶阀关闭时，其密封副两密封面之间的密封比压由外加于阀杆的驱动力矩产生。不仅消除了常规弹性阀座弹性材料老化、冷流、弹性失效等因素造成的密封比压降低和消失，而且可以通过外加驱动力矩的改变，实现对其密封比压的任意调整，从而使三偏心蝶阀的密封性能改善，蝶阀的使用寿命也大大提高Torque seal: When the three-eccentric structure makes the butterfly valve close, the sealing pressure between the two sealing faces of its sealing pair is generated by the driving torque applied to the valve stem. It not only eliminates the reduction and disappearance of the sealing specific pressure caused by the aging of the elastic material of the conventional elastic valve seat, cold flow, elastic failure and other factors, but also can realize the arbitrary adjustment of the sealing specific pressure through the change of the applied driving torque, thus improving the sealing performance of the three-eccentric butterfly valve and greatly improving the service life of the butterfly valve

3、软硬层叠式金属密封结构：蝶板密封圈采用软硬层叠式不锈钢片和柔性石墨板的密封面，使其具有金属硬密封和弹性密封的双重优点，无论在低温和高温工况下均具有优良的密封性能 Soft and hard laminated metal sealing structure: the butterfly plate sealing ring adopts the sealing surface of soft and hard laminated stainless steel sheet and flexible graphite plate, which makes it have the dual advantages of metal hard sealing and elastic sealing, and has excellent sealing performance both at low temperature and high temperature

4、 双向密封：因密封面锥角小于密封材料的磨擦角，蝶板关到密封位置时立即实现自锁，并能承受一定的反向压力冲击 Two-way sealing: because the cone angle of the sealing surface is smaller than the friction angle of the sealing material, the butterfly plate can realize self-locking immediately when it is closed to the sealing position and can withstand certain reverse pressure impact

5、防火结构：全金属结构本身具有火灾安全的特性 Fireproof structure: the all-metal structure itself has the characteristics of fire safety

6、阀体密封面：采用堆焊硬质合金或不锈钢，使得密封面强度高、硬度好、耐磨损，可连续启闭60000次以上而无损伤 Sealing surface of valve body: hardfacing carbide or stainless steel is used to make the sealing surface high strength, good hardness, wear-resistant, and can be opened and closed for more than 60000 times without damage

7、密封圈：密封圈由压板夹在蝶板上，易于安装、调节和更换 Sealing ring: the sealing ring is clamped on the butterfly plate by pressing plate, which is easy to install, adjust and replace

8、阀杆的上、下部位装有轴套，防止磨损和粘连，提高了使用寿命 The upper and lower parts of the valve rod are equipped with shaft sleeves to prevent wear and adhesion and improve the service life

基本参数 Basic parameters

主要零件材料 Material of main parts

主要技术参数及性能 Main technical parameters and performance

执行器技术参数 Technical parameters of actuator