A simple introduction signal butterfly pneumatic valve

signal butterfly pneumatic valve used in petroleum, chemical, food, medicine, paper making, such as water and electricity, shipping, water supply and drainage, metallurgy, energy system piping. Available in a variety of corrosive, non corrosive gases, liquids semifluid and solid powder pipelines and containers used as adjustment and throttling device. Special is widely used in high-rise building fire control system and other need to display the state of the pneumatic valve switch on pipeline system.

the characteristics of a pneumatic valve, signal butterfly

light, small, easy disassembling and maintenance, and can be installed on any position.

, simple and compact structure, ° rotating rapidly opening and closing.

and small operation torque, energy saving and lighter.

and reach full seal, the leakage test is zero.

, choose different parts material, suitable for a variety of media.

and flow curve tending to straight line, good regulation performance.

, opening and closing test into more time, long service life.

, every use brake pneumatic valve, check valve, The spherical intercepting pneumatic valve) ' > As of pneumatic valve and plug valve, pneumatic valve and hose line of pneumatic diaphragm valve, especially in high-rise building fire control system and the need to display the state of the pneumatic valve switch on pipeline system, the pneumatic valve replacement are available.

2, signal adjusting the working principle of pneumatic valve

, signal butterfly pneumatic valve driven by worm gear and worm drive gear shaft and butterfly plate rotating realize opening and closing and traffic control.

and rotation of worm gear and worm drive gear handwheel, make the butterfly plate to achieve the purpose of opening and closing and regulating flow, the handwheel clockwise for pneumatic valve shut off.

, worm gear and worm gear set the casing micro switch has two forms:

a, in the transmission gear box with open and close two micro switch, respectively, in the pneumatic valve is fully open and closing action, through to the control room 'pneumatic valve open' 'pneumatic valve clearance' indicator light source, make the accurate display of pneumatic valve switch state.

b, the transmission gear box with GuanXiangWei switch ( Butterfly plate seated position for °) , when the butterfly plate by ° ~ ° position with micro switch, pneumatic valve closed signal output, ° ~ ° location when another pair normally closed pneumatic valve opened signal can be output. Touch the micro switch can adjust the pressure of the CAM, butterfly plate in the different position.

3, signal butterfly pneumatic valve worm gearing adjust and wiring method is used to

cover, open the electric switch box, according to the electrical control demand of the conductor of the cable connects to the corresponding terminal, and sealed cable import, fixed the cable at the same time, in order to prevent damage of external force affects the cable wiring.

, when pneumatic valve in 'seated' position, clockwise (the following close to the CAM, CAM is just touch the micro switch ( You can hear the quiet) And then tighten the screws on the CAM CAM.

and when the pneumatic valves 'open' position, rotate counterclockwise to open the CAM, use the same method to adjust to the CAM.

and adjust the limit screw, when the pneumatic valve in the 'close' or 'open' position, should not make the limit screw cap just at the limit of worm gear surface, and should have a certain gap, then tighten the limit screw lock nut.

cover, electrical switch box cover, when pneumatic valve in 'seated' position, make the opening on the pointer to dial indicator of 'scale,' pointer and tighten the screws.

4, signal butterfly use pneumatic valve the note

, this butterfly pneumatic valve can be installed in any position on the pipeline.

, pneumatic butterfly valve installation position should guarantee the use and convenience of maintenance and replacement.

, this butterfly pneumatic valve installation can not consider line medium flow direction, allowing two-way flow.

pneumatic valve, butterfly before installation should be stored in a dry indoor place, pneumatic valve plate slightly open ° ~ °.

pneumatic valve, butterfly before installation should undertake the following work:

a, carefully check whether the usage is consistent with the butterfly pneumatic valve performance specifications.

b, clean inner cavity and the sealing surface, there is no dirt clinging to the body, don't open/close the butterfly plate before cleaning.

c, check whether transmission device and the butterfly on the pneumatic valve flange connection is reliable.

, pneumatic butterfly valve in the pipe clamp, pay attention to whether the relay of uniform and reliable.

pneumatic valve, butterfly after installation, pipeline strength test, pneumatic valve plate must be in an open position.

, pneumatic butterfly valve is installed, should be regularly check, the check of the main projects are as follows:

a, butterfly pneumatic valve seat and type O sealing ring damage.

b, pneumatic valve plate seal face seal performance.

c, pneumatic butterfly valve repair after assembly, opening and closing rotates can not have jam phenomenon.

d, pneumatic butterfly valve repair after the assembly, should be sealed performance test as required.

f, every time after maintenance, should be detailed records to for future reference.