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Jinyuan's Screw Air Compressor Supplier
With screw air compressor supplier, Guangdong Jinyuan Equipment Technology Co., Ltd wants to bring innovation to customers' companies as well as introducing a product line that is quality and material driven. We develop this product depending on our strong R&D competencies and on a global network of Open Innovation. As expected, this product effectively generates added value for customers and society in this field.
Although there are more rivals springing up constantly, Jinyuan Air Compressor still holds our dominant position in the market. The products under the brand have been receiving continuous favorable remarks about the performance, appearance and so on. As time goes by, their popularity still keeps blowing up because our products have brought more benefits and grander brand influence to customers in the world.
Our experienced design team can better help to meet customized needs on screw air compressor supplier or any other product from Jinyuan. Customers' specific logo and design are accepted.
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1. The reason and preventive measures of oil injection (commonly known as oil vomiting) of the screw air compressor host.
Cause analysis:
The oil injection of the screw air compressor refers to the oil injection of the air inlet of the air compressor. Generally occurs in the sudden shutdown, such as the air compressor motor power loss or manual emergency shutdown, at this time the air compressor suddenly shutdown and did not open the discharge valve in time to discharge the air compressor oil and gas barrel residual gas, if the intake check valve is too late to close, the air compressor inlet is injected with lubricating oil.
Troubleshooting / preventive measures:
First, check that the broken oil solenoid valve has no fault. If it is normal, it should further check whether the check valve on the main exhaust pipe can be closed in time or closed completely. If any, any fault should be removed. At present, the double screw air compressor is generally no longer installed broken oil solenoid valve, so the main reason for oil injection is that the check valve is not closed.
Once the power is off, the solenoid valve action, the intake valve closed, initial isolation, but there are generally air holes or gaps on the intake valve, can not be completely isolated from the outside, for the butterfly intake valve, the heavy hammer check valve feel the pressure change, emergency closure, this is the most effective and the last measure to prevent oil spitting. At present, the double screw air compressor generally does not install broken oil valve, after shutdown through the check valve partition, pressure to the oil of the oil in the machine internal pressure into zero, gravity back to oil and gas barrel, the heavy hammer check valve is the most effective way to prevent oil, but now some small models usually use piston type intake valve (or lift valve), with spring control piston to play the dual role of intake regulation and check, over time, piston wear is inevitable, shutdown spit oil will happen, is normal shutdown stop oil phenomenon.
2. Reasons and treatment methods for not loading the screw air compressor.
Fault phenomenon:
The air compressor start the air valve can not open.
The possible causes include:
(1) Pressure switch failure;
(2) Solenoid valve failure;
(3) Poor injection valve lag action;
(4) The discharge solenoid valve failure;
(5) Poor operation of the pressure maintenance valve;
(6) Control the gas source pipeline leakage.
Troubleshooting:
Check, repair or replace for the above possible causes.
3. The reasons and treatment methods for not unloading the screw air compressor.
Fault phenomenon:
The air compressor continues to operate after exceeding the set pressure and cannot be unloaded Vehicle, or continue to rise to the safety valve action.
The possible causes include:
(1) The pressure switch is not set properly or the drift occurs after setting (the controller fault);
(2) The inlet valve is not poor, and it causes failure or incomplete movement;
(3) When the system stops using gas, if the discharge solenoid valve fails, the pressure will rise slowly;
(4) Failure of the control loop.
Troubleshooting:
Check, clean, repair and replace if necessary.
4. Reasons and treatment methods of frequent addition and unloading of screw air compressor.(Power frequency machine)
The possible causes include:
(1) The pressure difference between the upper and lower limits of the pressure setting is too small;
(2) There is more leakage in the gas pipeline or equipment;
(3) The pressure maintenance valve seal is not strict, the spring fatigue;
(4) The upper pressure limit is set too low;
(5) The pipe filter on the exhaust pipe of the air compressor is seriously blocked;
(6) Check valve is installed on the outlet pipe of the screw air compressor.
Troubleshooting:
Reset the pressure difference between the upper and lower pressure above 0.2MPa, consider increasing the capacity of the gas storage tank, eliminate leakage, adjust or repair the pressure to maintain the valve spring force. The pressure maintenance valve of the screw air compressor is equivalent to the check valve. If there is a check valve on the outlet pipeline, the pressure detected by the pressure sensor of the air compressor is actually a small pressure of the pipeline. If the pressure maintenance valve of the air compressor leaks slightly to the oil and gas barrel, the pressure detected by the pressure sensor will drop, causing the reloading of the air compressor.
5. Reasons and treatment methods for screw air compressor for a long time.
The possible reason is the fault of the time relay. The screw compressor is generally set for 15~20min after the empty motor motor stops running. If the motor is not stopped, the time relay and control circuit should be checked and replaced if necessary.
6. Reasons for low exhaust pressure or reduced exhaust volume of screw air compressor and treatment methods.
The possible causes include:
(1) Air filter blockage, resulting in reduced air intake;
(2) The inlet valve is poorly operated and is not fully opened;
(3) The oil and gas separator is blocked, resulting in too large internal resistance;
(4) The discharge solenoid valve fails to produce internal leakage;
(5) The pressure setting is too low or the pressure sensor fails, and the pressure sensor sampling pipe is damaged, leaked or has liquid water;
(6) The aging and leakage of the user pipe network and gas consumption equipment, resulting in large gas consumption;
(7) New gas point, the actual gas consumption is greater than that of the air compressor;
(8) The aging host of the air compressor is seriously worn, resulting in reduced exhaust volume.
Troubleshooting:
Check the above possible causes. In the face of sudden failure, after asking whether to add new air points and whether to change the air compressor setting, focus to check the air valve and pressure sensor. Some of the once enough but now not enough are mostly caused by gas leakage, gas equipment aging, and the decreased performance of the air compressor itself.
7. Reasons and treatment methods of high exhaust pressure of screw air compressor.
The possible causes include:
(1) Pressure setting is too high;
(2) Poor contact or damage of the pressure sensor;
(3) The inlet valve fails, resulting in no unloading after exceeding the set shutdown pressure.
Troubleshooting:
First of all, check whether the setting pressure is high, and then judge whether the pressure sensor is working normally, repair or replace the pressure sensor, eliminate the fault caused by the intake valve lag, if necessary, should be replaced.
8. Reasons and treatment method of high temperature jump machine of screw air compressor.
High temperature machine is a common fault of screw air compressor, especially in summer. The possible causes include:
(1) Insufficient amount of lubricating oil, incorrect lubricating oil specification;
(2) Insufficient cooling water quantity, high cooling water temperature;
(3) the oil solenoid valve is not electric or the coil is damaged, the oil solenoid valve diaphragm rupture or aging;
(4) The ambient temperature exceeds the prescribed range;
(5) Oil cooler is blocked;
(6) There is a cooling fan motor fault and the cooling fan damage for the air-cooled air compressor. The exhaust pipe is not smooth or the exhaust resistance (back pressure) and other reasons;
(7) Thermal control valve (temperature control valve) fault;
(8) The oil filter is blocked, resulting in a smaller oil flow rate;
(9) Temperature sensor fault.
Troubleshooting:
(1) Check the amount of lubricating oil, if it is lower than "L", you should supplement the lubricating oil;
(2) Check the temperature difference between the inlet and outlet water, and check the inlet water temperature;
(3) If the temperature control valve is judged to damage, repair and replace;
(4) The air compressor room should not be higher than 45℃; if the requirements are not met, increase the exhaust air and reduce the room temperature;
(5) Check the temperature difference between the inlet and outlet of the cooler, the normal temperature difference is 5~8℃, if more than 9℃, the oil cooler pipeline may be blocked, if less than 5℃, may be the oil cooler pipe wall scale, can be cleaned by cleaning agent;
(6) Repair and replace the cooling fan, the exhaust pipe is not smooth or the exhaust resistance is clean with high pressure air;
(7) Check whether the oil is cooled by the oil cooler, if not, continue to check whether the action of the thermal control valve (temperature control valve) is normal, the most common fault of the temperature control valve is stuck due to carbon deposition, the maintenance method only needs to remove the valve core and use the carbon deposition cleaning agent after cleaning;
(8) Replace the oil filter;
(9) Repair or replace the temperature sensor.
9. Reasons and treatment method of overload machine (current overload) of screw air compressor.
The possible causes include:
(1) Abnormal power supply voltage, such as too low voltage;
(2) The unit exhaust pressure exceeds the rated pressure, and the motor is overloaded;
(3) Bad wiring, loose wiring, and contactor failure;
(4) The compressor body fault, such as the rotor carbon deposition, friction, entering the foreign body, etc.;
(5) Oil and gas separator is blocked, resulting in large internal resistance.
Troubleshooting:
(1) Eliminate the situation of unstable voltage and low voltage;
(2) Eliminate the situation of high exhaust pressure, and refer to the troubleshooting method of high exhaust pressure mentioned before;
(3) Tighten the power supply wiring, in many cases, the contact contact dirt, ablation is the main cause of overload jump mechanical and electrical gas failure;
(4) The compressor host rotation resistance, which usually requires overhaul of the host; (5) Replace the oil and gas separator.
The possible causes include:
(1) Air filter blockage, resulting in reduced air intake;
(2) The inlet valve is poorly operated and is not fully opened;
(3) The oil and gas separator is blocked, resulting in too large internal resistance;
(4) The discharge solenoid valve fails to produce internal leakage;
(5) The pressure setting is too low or the pressure sensor fails, and the pressure sensor sampling pipe is damaged, leaked or has liquid water;
(6) The aging and leakage of the user pipe network and gas consumption equipment, resulting in large gas consumption;
(7) New gas point, the actual gas consumption is greater than that of the air compressor;
(8) The aging host of the air compressor is seriously worn, resulting in reduced exhaust volume.
Troubleshooting:
Check the above possible causes. In the face of sudden failure, after asking whether to add new air points and whether to change the air compressor setting, focus to check the air valve and pressure sensor. Some of the once enough but now not enough are mostly caused by gas leakage, gas equipment aging, and the decreased performance of the air compressor itself.
7. Reasons and treatment methods of high exhaust pressure of screw air compressor.
The possible causes include:
(1) Pressure setting is too high;
(2) Poor contact or damage of the pressure sensor;
(3) The inlet valve fails, resulting in no unloading after exceeding the set shutdown pressure.
Troubleshooting:
First of all, check whether the setting pressure is high, and then judge whether the pressure sensor is working normally, repair or replace the pressure sensor, eliminate the fault caused by the intake valve lag, if necessary, should be replaced.
8. Reasons and treatment method of high temperature jump machine of screw air compressor.
High temperature machine is a common fault of screw air compressor, especially in summer. The possible causes include:
(1) Insufficient amount of lubricating oil, incorrect lubricating oil specification;
(2) Insufficient cooling water quantity, high cooling water temperature;
(3) the oil solenoid valve is not electric or the coil is damaged, the oil solenoid valve diaphragm rupture or aging;
(4) The ambient temperature exceeds the prescribed range;
(5) Oil cooler is blocked;
(6) There is a cooling fan motor fault and the cooling fan damage for the air-cooled air compressor. The exhaust pipe is not smooth or the exhaust resistance (back pressure) and other reasons;
(7) Thermal control valve (temperature control valve) fault;
(8) The oil filter is blocked, resulting in a smaller oil flow rate;
(9) Temperature sensor fault.
Troubleshooting:
(1) Check the amount of lubricating oil, if it is lower than "L", you should supplement the lubricating oil;
(2) Check the temperature difference between the inlet and outlet water, and check the inlet water temperature;
(3) If the temperature control valve is judged to damage, repair and replace;
(4) The air compressor room should not be higher than 45℃; if the requirements are not met, increase the exhaust air and reduce the room temperature;
(5) Check the temperature difference between the inlet and outlet of the cooler, the normal temperature difference is 5~8℃, if more than 9℃, the oil cooler pipeline may be blocked, if less than 5℃, may be the oil cooler pipe wall scale, can be cleaned by cleaning agent;
(6) Repair and replace the cooling fan, the exhaust pipe is not smooth or the exhaust resistance is clean with high pressure air;
(7) Check whether the oil is cooled by the oil cooler, if not, continue to check whether the action of the thermal control valve (temperature control valve) is normal, the most common fault of the temperature control valve is stuck due to carbon deposition, the maintenance method only needs to remove the valve core and use the carbon deposition cleaning agent after cleaning;
(8) Replace the oil filter;
(9) Repair or replace the temperature sensor.
9. Reasons and treatment method of overload machine (current overload) of screw air compressor.
The possible causes include:
(1) Abnormal power supply voltage, such as too low voltage;
(2) The unit exhaust pressure exceeds the rated pressure, and the motor is overloaded;
(3) Bad wiring, loose wiring, and contactor failure;
(4) The compressor body fault, such as the rotor carbon deposition, friction, entering the foreign body, etc.;
(5) Oil and gas separator is blocked, resulting in large internal resistance.
Troubleshooting:
(1) Eliminate the situation of unstable voltage and low voltage;
(2) Eliminate the situation of high exhaust pressure, and refer to the troubleshooting method of high exhaust pressure mentioned before;
(3) Tighten the power supply wiring, in many cases, the contact contact dirt, ablation is the main cause of overload jump mechanical and electrical gas failure;
(4) The compressor host rotation resistance, which usually requires overhaul of the host; (5) Replace the oil and gas separator.
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