手动蝶阀
Manual butterfly valve
使用说明书
Operation manual
一、用途
Ⅰ.Application
本系列蝶阀适用于冶金、矿山、建材、石化、造纸、纺织等行业的工业管道中。

它对气体半流体等管道中的介质按不同的信号，改变其流量的大小，从而达到自动调整风量，实现自动控制。

体阀采用优质钢板焊接结构，具有传动轻巧灵活，密封性能好，开闭时间短，切断速度快，能可靠的杜绝事故的发生。

This series butterfly valve is suitable to use in the industry pipe of metallurgical, ore building material. Paper textile and so on, Accord to the different signal in the pipes of the gas half fluid medium. Change the flow volume, and adjust the fan volume automatically. It can realize automatic control. The valve is used good welding structure. It is characterized by light, nimble good sealing, short open time, fast speed broken and dependable.
二、结构及工作原理
Ⅱ.The structure and Working principle
蝶阀启闭件是一个圆盘形的蝶板，在阀体内绕其自身的轴线旋转，从而达到启闭或调节的阀门叫蝶阀。

蝶阀全开到全关通常是小于90度，蝶阀和蝶杆本身没有自锁有力，为了蝶板的定位，要在阀杆上加装蜗轮减速器。

采用蜗轮减速器，不仅可以使蝶板具有自锁能力，使蝶板停止在任意位置上，还能改善阀
门的操作性能。

The plate piece of butterfly valve is a disc that the valve body around its own axis of rotation,so as to achieve the opening and closing or regulating valve, the valve is called the butterfly valve.Butterfly valve is fully open to fully closed is usually less than 90 degrees, butterfly and butterflies bar itself is not a strong self-locking,in order to position the disc to install the valve stem on the worm gear reducer.The use of worm gear reducer, not only can make the disc with self-locking capability,so the disc to stop at any position,but also to improve the valve performance.
三、安装使用与维护
Ⅲ、Installation and maintenance
1、手动蝶阀最好安装在水平管道上，如需安装要垂直管道上，用户在订货时应注明。

The manual butterfly valve had better install the horizontal pipe. If the client request to install the vertical pipe.
2、大口径式蝶阀使用在振动的情况下，安将时应加支承和加固。

When the big mouth butterfly valve is used in vibrated condition, it should be support and strength.
四、主要外型及连接尺寸
Ⅳ.The main outline and connection size。