The article summed up screw pneumatics machine common breakdown and processing technique consult with offerring.
1, start / jump machine kind common breakdown and processing
2, add / uninstall kind of common breakdown and processing
3, exceed electric current / overload is common breakdown and processing
4, tall, low alewife is common breakdown and processing
5, oscillatory / abnormal knocking kind common breakdown and processing
6, common breakdown reachs processing related oily, water
7, exhaust pressure kind common breakdown and processing
8, sealed / divulge common breakdown and processing
9, into gas a powerful person common breakdown reachs processing
10, relief valve kind common breakdown and processing
1, start / jump machine kind common breakdown and processing
Does the account that cannot ◆ start reach processing?
Breakdown phenomenon: Indicator light of travel of the pneumatics machine fortune that start is not bright and advocate electric machinery was not started.
Case study:
1) fuse burn down;
2) protects relay movement;
3) starts relay breakdown;
Contact of 4) starting pushbutton is undesirable;
5) voltage is too low;
6) electromotor breakdown;
7) airframe breakdown;
8) owes photograph protection relay movement;
After breakdown of weight of 9) pneumatics machine calls the police, not restoration.
Processing technique:
1) changes new fuse
2) examination proofreads relay;
3) checks repair of the inspection after power supply is normal to start pushbutton;
4) checks reply power source;
5) is overhauled and remove electric machinery trouble;
6) examines airframe breakdown reason and eliminate
7) checks power source and order of electric machinery photograph;
8) restoration alarm signal.
Does ◆ tripping operation stop the reason of machine and processing?
Breakdown phenomenon: After stage or the tripping operation of one machine of much stage pneumatics in moving normally stop machine or pneumatics machine to start inside short time tripping operation stops machine.
Case study:
1) electromotor voltage and power source voltage are unusual;
Pressure of 2) aircrew exhaust exceeds rated pressure, electric machinery overload causes electric machinery to heat up protective act;
3) lube norms is incorrect, lubricant effect is poor, electric machinery overload causes electric machinery to heat up protective act.
4) oily fractionize leaves group jam (lube pressure tall) , cause oily fine segregator to press difference to protect a movement greatly, or electric machinery overload causes electric machinery to heat up protective act;
Breakdown of 5) compressor noumenon, if rotor accumulates carbon, attrition, enter an eyewinker to wait;
6) circuitry is undesirable, wiring becomes loose, contactor breakdown;
7) discharges air temperature to spend tall breakdown;
8) breaks breakdown of oily electromagnetism a powerful person;
Setting of 9) examination pressure is reasonable.
Processing technique:
1) checks electromotor power source and voltage;
2) checks pressure watch, if exceed set pressure, adjust pressure switch;
3) examines oily number, more oil change is tasted;
4) changes oily fine segregator;
5) hand dish rotational, if the overhaul cannot undertake to lead plane when roll, in the processing of manufacturer of contact of lead plane breakdown of installation expiration period;
6) is overhauled or change;
7) examination cooling water, clear condenser;
8) is cleaned or change oily electromagnetism a powerful person;
Whether does setting of upper limit of switch of 9) examination pressure pass low, or setting of pressure switch upper limit accuses what ark installs to stop machine pressure under pneumatics machine couplet.
Is ◆ long does empty wagons move but the reason of ceaseless machine and processing?
Breakdown phenomenon: Empty wagons of pneumatics pilot time, but electric machinery keeps carrying.
Case study:
The most possible reason is time relay breakdown, the electric machinery after empty wagons of general set 15~20min stops screw type compressor carry, if all the time empty wagons condition but electric machinery keeps carrying, answer to be checked above all.
Processing technique:
The examination controls relay of loop, settling time.
2, add / uninstall kind of common breakdown and processing
Cannot ◆ carry the account that run and processing completely?
Breakdown phenomenon: Pneumatics machine starts servo of junior gas a powerful person implement cylinder cannot a standard-sized sheet.
Case study:
Breakdown of 1) pressure switch;
2) 3 to breakdown of electromagnetism a powerful person;
3) takes action of gas a powerful person undesirable;
Breakdown of a powerful person of 4) release electromagnetism;
5) pressure keeps movement of a powerful person undesirable;
6) controls pipeline leak
Processing technique:
1) examination changes pressure switch;
2) examination changes 3 to electromagnetism a powerful person;
The check after 3) disassembles investigates manage;
4) examination, change release electromagnetism a powerful person
Valve base of the examination after 5) disassembles and check valve piece whether to wear away;
6) checks leak position aftertreatment.
Does ◆ move in cannot the reason of to load and processing?
Breakdown phenomenon: Into gas butterfly a powerful person cannot be opened, servo implement air cylinder adjustment not movement
Case study:
1) takes trouble of orgnaization of gas butterfly a powerful person, if connecting rod bolt becomes loose;
Diaphragm of 2) servo cylinder wears away leak;
A powerful person of electromagnetism of 3) to load damages;
Invalidation of a powerful person of 4) release electromagnetism makes control enrages release;
Cup of 5) filter water or control gas pipeline have leak;
6) capacity control valve jams or breakdown;
Set of 7) pressure switch incorrect or set hind occurrence drift.
Processing technique:
1) eliminates orgnaization of butterfly a powerful person breakdown or change butterfly a powerful person;
2) changes servo diaphragm;
3) eliminates a powerful person of to load electromagnetism breakdown or change a powerful person of to load electromagnetism;
4) eliminates release electromagnetism a powerful person breakdown or change release electromagnetism a powerful person;
5) changes filter water cup or eliminate divulge;
6) changes or clear capacity control valve
7) changes or reset pressure switch.
Does ◆ move in the reason that cannot uninstall and processing?
Breakdown phenomenon: The forehead exceeds to spend actuating pressure to still continue to move in moving, or continue to rise to relief valve movement.
Case study:
1) pressure switch is installed undeserved or drift appears after set;
2) takes action of gas a powerful person undesirable;
Invalidation of release electromagnetism a powerful person is like when 3) system stops to use gas, criterion pressure will be slow rise; 4) controls loop breakdown.
Processing technique:
1) overhauls pressure switch, change when necessary;
After 2) disassembles, add note lube fat;
3) overhaul, change release electromagnetism a powerful person;
4) rehabilitate or change.
Is ◆ added often / uninstalled reason and processing?
Case study:
1) uses tracheal road or equipment existence leak;
Poor setting of voltage limiting of fluctuation of 2) pressure switch is too small;
3) air wastage is not stable;
4) pressure maintains core of a powerful person of a powerful person sealed and lax, bedspring exhaustion;
Setting of upper limit of pressure of 5) pneumatics machine is inferior.
Processing technique:
1) checks leak position position and eliminate;
2) reset (general fluctuation voltage limiting differs 0.1MPa above) ;
3) increases the size of gas tank;
4) is overhauled or change core of a powerful person, change bedspring;
Switch of 5) reset pressure.
3, exceed electric current / overload is common breakdown and processing
Does electric current of travel of ◆ pneumatics accident reach processing under normal reason?
Case study:
1) air wastage is too big, pneumatics aircraft moves in low-pressure limits;
2) inhaler jams;
3) takes action of gas a powerful person undesirable;
A powerful person of 4) look attune is adjusted undeserved.
Processing technique:
1) checks wastage, increase compressor when necessary;
2) is checked or change;
3) disassembles clean and add note lube fat
Reset adjusts 4) .
The 3 electric machinery that cause to breakdown of electromagnetism a powerful person exceed ◆ electric current