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D641F46-16C DN400 东营市专业制造D641X法兰气动蝶阀/软密封蝶阀
- ¥288.00 1 - 3
- ¥287.00 4 - 6
- ¥286.00 ≥7
- 冠桓品牌
- D641F46-16C DN400型号
- 斜板式结构形式
气动蝶阀的工作原理及保养调试方法
气动蝶阀是由气动执行器和蝶阀组成。气动蝶阀是用随阀杆转动的圆形蝶板做启闭性，以实现启用动作的气动阀门主要做截断阀使用，亦可设计成具有调节或段阀兼调节的功能，目前蝶阀在低压大中口径管道上的使用越来越多。
气动蝶阀的工作原理
蝶阀的蝶板安装于管道的直径方向。在蝶阀阀体圆柱形通道内，圆盘形蝶板绕着轴线旋转，旋转角度为0°-90°之间，旋转到90°时，阀门则处于全开状态。蝶阀结构简单、体积小、重量轻，只由少数几个零件组成。而且只需旋转90°即可快速启闭，操作简单，同时该阀门具有良好的流体控制特性。蝶阀处于完全开启位置时，蝶板厚度是介质流经阀体时的阻力，因此通过该阀门所产生的压力降很小，故具有较好的流量控制特性。蝶阀有弹密封和金属的密封两种密封型式。弹性密封阀门，密封圈可以镶嵌在阀体上或附在蝶板周边。
气动蝶阀保养及调试
1、气缸检查保养计划
平时做好气缸表面清洁及气缸转轴卡簧处加油，每6个月定期将气缸端盖打开检查气缸内有无杂物及水分，以及润滑脂状态。如润滑脂缺少或已干需将气缸拆开做全面保养清理之后再加润滑脂。
2、阀体检查
每6个月检查阀体外观是否良好，安装法兰有无泄露，如果方便检查阀体密封是否良好，无磨损，及阀板运行是否灵活，阀门有无异物卡住。
气缸体拆卸及组装方法及注意事项：
首先将气缸从阀体上拆下来，先把气缸两端盖拆开，拆活塞时一定要注意活塞齿条的方向，然后用外力顺时针旋转气缸轴使活塞运行到最外边，再将关阀孔慢慢通气用气压轻轻将活塞顶出，但此方法一定要注意慢慢通气，否则活塞会突然喷出，有点危险!然后将气缸轴上卡簧拆掉，气缸轴就可以从另一端拿出来。然后就可以对每个部件进行清理，加润滑脂，需加润滑脂部位为：气缸内壁及活塞密封圈，齿条及背环片，还有齿轮轴及密封圈。加好润滑脂后就要按拆的顺序及部位反顺序安装后就要按拆的顺序及部位反顺序安装，一定要注意齿轮齿条的位置，一定要***在开阀位置时即活塞缩到最里面去的位置时齿轮轴上端槽与气缸体平行，关阀位置时即活塞伸到最外面来的位置时齿轮轴上端槽与气缸体垂直。
气缸与阀体安装调试方法及注意事项：
首先将阀门用外力置于关闭状态，首先将阀门用外力置于关闭状态，即顺时针旋转阀轴直到阀板与阀座密封接触，同时将气缸也置于关阀状态(即气缸轴上方小槽与缸体成垂直状对于顺时针旋转为关阀的阀门)，然后将气缸装到阀门上去(安装方向与阀体平行或垂直都可以)，再看螺丝孔是否对正，不会有太大偏差，如有少许偏差，将气缸体转动一点就可以了，然后将螺丝紧固。气动蝶阀调试先检查阀门配件是否安装齐全，电磁阀及消音器等，如有不齐全，不得调试，正常供器气压力为0.6MPA±0.05MPA，运行前确保阀体内无杂物卡在阀板处，***调试运行时用手动操作电磁阀手动钮(手动操作时电磁阀线圈失电，手动操作才有效;电控操作时将手动扭置于0位圈失电，手动操作才有效;0位为关阀，1位为开阀，即得电开阀，失电关阀如需得电关阀，失电开位为关阀将电磁阀线圈旋转180度安装即可)，并观察阀门运行状态。
如果在调试运行过程中发现气动蝶阀厂家在开阀起始位置时很慢，但只要动作之后就很快，试运行过程中发现阀门在开阀起始位置时很慢，但只要动作之后就很快，这种情况是阀门关闭过紧，只需将气缸行程调小一点即可(把气缸两端行程调节螺丝同时往里调一点，调整时需将阀门运行到开位置，然后将气源关掉再调)，调到阀门开启轻松，关到位不漏就行了。如果消音器为可调节消音则可以调节阀门的开关速度，需将消音器调节到阀门开关速度适合的开如果调得过小，可能使阀门不动作。
Working principle and maintenance method of pneumatic butterfly valve
The pneumatic butterfly valve is composed of pneumatic actuator and butterfly valve. Pneumatic butterfly valve is used to start and close with the circular butterfly plate which rotates with the valve stem, so as to achieve the actuating action of pneumatic valve, which is mainly used as a cut-off valve, and can also be designed as a function of adjusting or adjusting valve. At present, butterfly valves are used more and more in low pressure and large diameter pipelines.
Working principle of pneumatic butterfly valve
The butterfly plate of the butterfly valve is installed in the diameter of the pipe. In the cylindrical channel of butterfly valve body, the disc shaped butterfly plate revolves around the axis, the rotation angle is 0 degrees -90 degrees, when the rotation is 90 degrees, the valve is in the full open state. The butterfly valve is simple in structure, small in size and light in weight, and consists of only a few parts. The valve can be opened and closed quickly with only 90 degrees of rotation, and the valve has good fluid control characteristics. When the butterfly valve is fully open, the thickness of the butterfly plate is the resistance of the medium flowing through the valve body, so the pressure drop produced by the valve is very small, so it has better flow control characteristics. The butterfly valve has two seal types, which are elastic seal and metal seal. Elastic sealing valve, the seal ring can be inlaid on the valve body or attached to the circumference of the butterfly plate.
Maintenance and debugging of pneumatic butterfly valve
1, cylinder inspection and maintenance plan
Usually, clean the cylinder surface and fill the cylinder shaft, and open the cylinder cover at regular intervals every 6 months to check whether there are any sundries and moisture in the cylinder, as well as the grease status. If the grease is short or dry, the cylinder should be dismantled and the grease is added after full maintenance and cleaning.
2, valve body inspection
Every 6 months, check whether the appearance of valve is good and whether the flange is leaked. If it is convenient to check whether the valve body seal is good, no wear, and whether the valve plate operates flexibly, whether the valve has foreign bodies stuck.
Cylinder body disassembly and assembly methods and points for attention:
The cylinder is removed from the body, the ends of the cylinder cover apart, remove the piston must pay attention to the direction of the rack piston, and then use a force clockwise rotation axis of the cylinder so that the piston runs to the outside, and then close the valve hole with ventilation pressure will slowly gently piston, but this method must pay attention to slowly ventilation, otherwise the piston will suddenly ejected, a little dangerous! Then the cylinder shaft circlip down the axis of the cylinder can take out from the other end. Then, each component can be cleaned and grease added. The grease parts should be: inner wall of cylinder and piston seal, rack and back ring, gear shaft and seal ring. With good lubricating grease after the demolition of the site according to the order and reverse order according to the order of the installation after the demolition of the site and the reverse order of installation, attention must be paid to the gear rack position, we must ensure that in the open valve position when the piston retracts into the most inside position when the gear shaft groove and the block parallel. Close the valve position is extended to the outside of the piston position gear shaft and the cylinder body vertical groove.
The installation and commissioning method of cylinder and valve body and precautions:
The valve with a force placed in the closed state, the valve with external force in a closing state, the clockwise rotation of the valve shaft until the valve plate and valve seat sealing contact, while the cylinder is placed in the closed valve state (i.e., the axis of the cylinder and the cylinder form above the slot vertically for clockwise rotation of the valve, then close the valve) the cylinder attached to the valve (up and valve mounting direction parallel or vertical, can look at the screw holes) on it, there is not much deviation, if there is a little deviation, the cylinder body to rotate it, then screw fastening. Pneumatic butterfly valve check valve installation debugging accessories are complete, solenoid valve and silencer, if not complete, not for debugging, normal pressure is 0.6MPA + 0.05MPA, before the operation to ensure that the valve body without debris stuck in the valve plate, with manually operated solenoid valve manual button for the first time when debugging (manual operation the solenoid valve coil power, manual operation is effective; electronic control operation manual twist placed 0 ring out of power, the manual operation is effective; 0 is off valve 1 to open the valve, the electric valve, power off valve for electric valve, power off the open position the valve solenoid valve coil is rotated 180 degrees), and can be installed to observe the operation state of the valve.
If in the process of debugging operation found in pneumatic valve manufacturers in the open valve the starting position is very slow, but as long as the action soon after, during the test run that the valve in the open valve when the starting position is very slow, but as long as the action quickly, this is the valve closed tight, only the cylinder stroke adjustable a can (the ends of the cylinder stroke adjustment screw to adjust at the same time point, to adjust the valve operation to open position, and then turn off the gas valve open, to reset) easily, no leakage on the line closed in place. If muffler is adjustable and muffled, it can regulate the switching speed of valve. It is necessary to adjust the muffler to a suitable opening of valve switch, if it is too small, it may make the valve do not move.
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