Summary of causes and solutions for abnormal noise of screw air compressor
Screw compressor is a kind of power equipment in a wide range of petrochemical and industrial production fields. The main cylinder of the model camera shows its own distinctive hybird propaganda, content, casing and information inwardly
There is a pole gap, and there is no metal contact during operation at any time, which can be more transmitted from the structural principle.
Relying on operation is of great significance to production, and it is necessary to protect interest.
The traditional piston compressor has the characteristics of stable operation and low noise.
However, many users have problems during use, and abnormal noise occurs during operation, such as
Due to the different causes of the failure, the external performance of the abnormal sound and the cause of the occurrence.
This article makes a brief analysis of the causes of different abnormal noises of the lens and provides corresponding solutions.
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1. Reasons for abnormal noise: the belt is too loose, and the active and passive belt grooves are too large, resulting in slipping and whistling (belt drive type).
The slippage of the carry-on belt can be judged and determined from the following aspects:
(1) A scorching smell of the belt can be smelled when approaching the equipment.Observe, there will be belt debris;
(2) There is an abnormal friction sound between the pulley and the belt;
(3) Due to the load is not synchronized, causing large current fluctuations.
Solution: Rotate the adjusting bolt to adjust the tightness, the deformation is less than 5mm, but not too tight.
After adjustment, run with load, if you continue to slip, you need to replace the belt.
The wear of the belt is basically the same as the adjustment procedure of the belt, but it should be noted that when replacing the belt, you can't just replace single belt.Otherwise the new belt will be damaged due to the different belt tension.
At the same time, be careful not to take the initiative to the belt or pulley Up, the rope slipped.
2. Reasons for abnormal noise: the lubricating oil is running short of oil, causing the growth of yin and yang to directly engage the grease, and dry metal friction is produced
The fuel injection nozzle has no synchronous structure, it is rotated by an indirect natural phenomenon, and the mouth is directly connected.
However, the “lack of oil” in the nose is not necessarily a defect, it may be due to lack of oil and grease caused by other reasons.
Solution: Check the oil level, oil leakage, troubleshoot and adjust the system configuration.
3. Reasons for abnormal noise: the inlet valve is not closed tightly, the air leakage is large, and the check valve vibrates in the reverse direction. The main noise produced by the return valve vibration.
Howling.
The maintenance oil film sprayed into the machine head plays a role of isolation. Therefore, it has a special role for all mouths
important. If the screw compressor has "appetite", it will cause direct contact with nutrients, abnormal noises, and damage to the bearings, etc.
malfunction.
The oil pressure is low. Direct causes such as: oil separator failure, oil cooler, oil pipeline leakage, oil pipe joints loose oil; general failures can be
Possibility: failure of minimum pressure valve, use of unqualified gasoline, irregular design of oil and gas tank, damage to single valve of return order
Failure, improper installation of oil pipes, large air consumption, and low-pressure use under overload (or the oil returned by the machine and the oil discharged by the machine are used for separation)
The amount of matching is too tight) and so on.
At least 3/4 of the cause should be contaminated by the oil. It should be noted that in actual operation, the key person only knows that the operation of the equipment will be due to the addition of
Indeed, for those who have not been energetic for a long time, the amount of oil in the brain will always be maintained.
Not enough. If you don't do it at this time, it is easy to cause oil shortage. Therefore, long-term downtime weight loss must be on the plane first
Get enough oil in your head and start again.
Comes from a lift check valve, usually a check valve is installed at the outlet of the contraction, its purpose is to stop the lens when the condensation stops
Back to the system.
Solution: Replace or malfunction.
(1) The contact between the valve plate and the valve seat, the gap between the valve plate and the lift limiter,
The take-off amount of the valve plate and the specifications of the spring meet the design requirements;
(3) When replacing internal orders (such as valve plates, buffer plates, springs, etc.),
All need to be leaked at the same time;
(4) Leak test: Leak test is required before the valve is installed.
4. Cause of abnormal noise: battery bearing failure
Solution:
(1) The motor is running, it can be run with a screwdriver, the dentin is worn, and the ear is close to the screw wooden handleIf the rolling element has a faint rolling sound in the outer ring, and the sound is monotonous and synchronized, which makes people feel relaxed, then say It shows that the bearing is good and the motor is operating normally. If you hear abnormal noises, you should analyze the reasons and deal with them;
(2) Scrolling of notificationsThe sound of body rolling and vibration indicates that the bearing clearance is too large or severely fatigued and needs to be replaced;
(3) The rolling body sound is dumb and the tone is heavy.It is clear that the bearing grease is too dirty and corroded by impurities. It is necessary to clean the bearing with kerosene and replace it with new wear;
(4) The rolling elements are irregularThe impact sound of the bearing indicates that the rolling elements of the bearing are broken and need to be replaced;
(5) The sound of the nearby mouth is mixed with the rolling of the rolling elements.
The sound indicates that the bearing lacks lubrication or the lubricating oil is selected to choose grease lubricating oil, or replace the oil.
5. Different reasons: host failure. The host machine malfunctions, causing abnormal stuck points in the Yin and Yang to produce noise;
The bearing end face clearance is too large; the main machine bearing is damaged.
Solution: Carry out the main engine overhaul and adjust the main engine clearance. According to industry research data, under normal circumstances, compaction
The shrink machine milk puppies should be controlled between 0.8 and 1.2 silk. When the speed increases, because of the thermal deformation of the tooth shape and the tooth surface
Small factors, chasing the empty face to face tend to understand, non chasing face to chase this problem.
Adjust the chasing gap a little bit larger, and adjust the non-chasing gap a bit smaller, so that the ratio of the chasing gap to the non-chasing gap is between 1.0 and 1.2.
More reasonable.
6. The cause of the foreign body: the sound system dissipated. The sound system of sound dissipation is composed of door muffler, bracket, frame, board sound
: It is found that the power station activity has stopped, causing the connection to be loose. It will happen during operation.
The effects of expansion force, sliding force, friction force, etc. cause the bottom shell, piping system, and the whole structure of the whole machine.
Vibration of pieces. If proper measures are not taken to relieve the restriction, these vibrations will cause abnormal noise.
However, for a high-speed running equipment, abnormal noise means that the fault has occurred, and we must take measures as soon as possible to troubleshoot and reconcile
Resolve failures and ensure safe production and operation.
It is composed of cotton, strips and other parts.
summary
Different shapes have different reasons, and there are more types and reasons for abnormal noises to be discussed and summarized.