密闭闸阀

手动密闭闸阀是我公司结合用户反馈信息和多年生产实践改进的新一代闸阀产品。广泛应用于建材、冶金、矿山、电力，化工、玻璃、轻工、粮食等行业，是控制流量、调节或切断粉尘物料的理想设备。
The valves are the newly improved products on the base of feedback of users and production practice of our company. It is widely used in the building material, metallurgy, mining, electric power chemical, glass, light industry and food industry etc. It is the ideal equipment to control flow, adjust or cut down powder material.

结构特点：
Structure characteristic:
密闭性强、操作灵活、传动部分无污染、无粉尘影响、使用寿命长、无泄漏、安装不受角度影响，能随时开闭，调节物料流量，特别适用于无粘度的固体粉料及小于Φ10mm的颗粒料、晶体料、固状料的输送及流量调节。
This valve is good in seal, handy to open and closing, long life and not leaky. There is no contamination and dust influence in driving part. It can be installed at any angle. It also can be opened and closed at any time to change the flow of material. It is especially suitable for non-glutinosity solid powder and crystalloid, grain, solid material to be transported.

性能参数：
Performance parameter:
公称压力
Nominal pressure 介质流速
Medium velocity 适用温度
Suitable temperature 适用介质
Suitable medium
0.05MPa ≤28m/s ≤300℃ 空气、粉尘气体、固体粉料、晶体料
Air, gas with dust, solid powder, crystalloid

工作原理：
Working principle:
主要结构由框架、闸板、丝杆、螺母、密封副等零件构成。转动手轮使丝杆带动丝杆螺母和闸板沿水平方向往复运动，达到闸门的启闭目的，同时密封副在闸板运动中阻拦粉尘不进入传动腔内，无外漏污染。
The valve is mainly made up of frame, disc, pole, nut and seal etc. Rotate the handwheel driving the pole and nut reciprocate in horizontal. At the same time the seal can prevent dust from entering driving body and out-leakage pollution does not exist.


使用说明：
Usage explanation:
本阀可水平安装或垂直安装，安装时两法兰连接中间必须加密封垫片，然后锁紧螺栓。
操作时手轮顺时针旋转为阀关，反之为开，不得在手轮上再增加辅助杠杆。
若长期存放应使设备处于关闭状态，各传动部位应加润滑油，不允许露天存放或堆置。

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