With these problems, the author specifically interviewed domestic Ryan Aite Mechatronics Co., Ltd., which has strong technical advantages in this field. Specially, the knowledge about the maintenance and repair of silent oil-free air compressors is organized as follows for the general users.
1, the choice before buying. The choice of good quality, suitable for equipment requirements will be much less troublesome to use.
1.1 It is recommended that users choose products manufactured by manufacturers with the advantages of technology like Shenzhen Jinbao Electrical Equipment Co., Ltd. At the same time when choosing, it should require the manufacturer to provide the technical parameters as detailed as possible. Those manufacturers whose parameters are incompletely identified lack the detection of certain technical items and should be careful when choosing.
1.2 According to the needs of the equipment, select a model with a slightly larger flow rate to avoid fatigue. Increase the service life of the machine.
2, pay attention to daily maintenance. Proper use and maintenance can extend the service life of air compressors and avoid or reduce the occurrence of failures.
2.1, mute oil-free air compressor itself does not contain any oily substances, should not add any oil and oily substances.
2.2. In strict accordance with the rated voltage, frequency, and rated load on the air compressor, the effect will be better and safer.
2.3. When you are not using work, develop a habit of cutting off the power in a timely manner. When you move the air compressor or connect other equipment, you must turn off the power.
2.4. It must be operated within the pressure range set at the factory (general factory maximum pressure setting is 8 Bar, safety relief pressure 8.8 Bar), otherwise there will be danger of gas tank explosion. (Need special pressure, please contact the manufacturer to customize)
2.5. Pay attention to the power supply voltage and the nameplate of the air compressor. When the power supply voltage is higher than the applicable voltage of the air compressor, it may cause personal accidents and damage the air compressor. When the power supply voltage is lower than the applicable voltage of the air compressor, it may cause poor starting and even damage the motor.
2.6. The filter should be cleaned in time according to the use conditions, and the accessories and cable lines should be checked regularly. The damage should be replaced immediately. The machine should be kept clean and dry without oil, in order to fully realize its performance. When the air compressor is not in use, the air in the air tank should be drained, the waste water in the tank should be drained, and stored in a dry environment.
2.7. Evacuate the gas tanks in time. It is recommended that they be discharged at least once a week.
2.8, the correct use of the environment: the normal use of air compressor in the environment at 5 °C -40 °C, shall not be placed in an unobstructed place, do not work in humid and dark place, rigorous in the storage of flammable and explosive liquid gas and more Dust, multi-volatile gas work place. Keep the environment tidy and avoid unnecessary accidents.
3.0. Please check and replace the air intake filter regularly and regularly. After 300 hours of operation, perform a check. The user decides the frequency of the test depending on the use. Keeping the filter and muffler clean can avoid most of the problems. Unclean filters can reduce compressor performance and compressor life.
2, the general failure and its exclusion.
2.1, general fault guide table (abbreviated form)
2.2 Common Fault Description:
A. The air compressor does not stop working, but the air supply is still insufficient. The air compressor works, and the air tank stops when there is pressure. Use the ear to listen to the external air compressor, air supply pipe on the air tank, check valve, safety valve, pressure switch and other joints have leak sound. If the above problem is ruled out then the head cup can wear or exceed the rated flow, and the machine is overloaded. As for the damage to the leather bowl, you have to change the skin. Generally, the life of the bowl is about 3 years.
B, air compressor intermittent work, lack of air supply. The reason for this failure is: a Insufficient voltage. There is a buzzing start. Observe that the operating current is too large at this time. The minimum operating voltage of the oilless head is 200V. Below this voltage, the head is difficult to start. Frequent starting will cause the head temperature to rise. Eventual circuit protection stops. Until the temperature drops, turn it on again. For areas with frequent voltage fluctuations, automatic voltage regulators are recommended. b Start capacitor leakage. The head of the compressor can also be started when the leakage occurs, but the current is slow and the current is large. Because the current is large, the hair of the machine is quickly heated and the machine head is protected against shutdown. This problem can be replaced with a new one, but it should be noted that the UF number must be the same, too big or too small is not good.
C. The air compressor can start work only after the air pressure of the air tank is set to zero pressure. Otherwise it will not start. You can see that the head is turning very slowly when power is on. The current is also large. This is because the one-way valve is blocked and its position is connected to the head outlet pipe (or high pressure pipe) and the other end to the gas tank. There are three outlets. Its role is to make the gas produced by the machine head can only enter the tank and the gas in the tank cannot come out. Inside it is a spring and a film. If the dirt catches the film, it will cause a reverse air leakage. Then the second start of the head will be pressed against the high pressure and cannot start. The solution is to use the wrench to open the valve cover behind the one-way valve.
D. The air compressor can work, but the noise is significantly larger than the original. This phenomenon is to check whether the operating current is normal after excluding the onboard accessories. If normal, the machine is generally used for some years, and the oil-free air compressor should be kept away from dusty places as much as possible. Regularly unplug the power supply and use high-pressure air to blow off the dust on the surface and the two blades. The noise is excessive. As the four motor bearings are worn out by the dust, the corresponding cups will also be affected. Replace tools and accessories that require a dedicated oil-free air compressor.
3, mute oil-free air compressor application range mute oil-free air compressor can be widely used in any industry that needs clean and clean compressed air, but the medium must be air, in any case can not be used to pump flammable and Explosive gases or operate in environments containing these gases. Not to be used to pump liquids, particulates, solids, and anything containing explosive, flammable substances
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Table of classification of formation hardness and bit selection
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Table of classification of formation hardness and bit selection |
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IADC code |
IADC code of diamond bit |
Formation description |
Rock type |
Compressive strength(Mpa) |
ROP(m/h) |
|
111/124 |
M/S112~M/S223 |
Very soft:sticky soft formation with low compressive strength. |
Clay Siltstone sandstone |
<25 |
>20 |
|
116/137 |
M/S222~M/S323 |
Soft:soft formation with low compressive strength and high drillability. |
Clay rock Marl Lignite sandstone |
25~50 |
10~20 |
|
417/527 |
M/S323~M/S433 |
Medium soft:soft to medium formation with low compressive strength and steak. |
Clay rock Marl Lignite Sandstone Siltstone Anhydrite Tuff |
50~75 |
5~15 |
|
517/537 |
M322~M443 |
Medium:medium to hard formation with high compressive strength and thin abrasive streak. |
Mudstone Dark rock shale |
75~100 |
2~6 |
|
537/617 |
M422~M444 |
Medium hard:hard and dense formation with high compressive strength and medium abrasiveness. |
Dark rock Hard shale Anhydrite Sandstone Dolomite |
100~200 |
1.5~3
|
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PDC bit shank thread and recommended make up torque |
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Bit size(in) |
API regular pin(in) |
Recommended up torque(KN.M) |
|
3 1/2~4 1/2 |
2 3/8 Reg |
2.4~2.7 |
|
4 17/32~5 |
2 7/8 Reg |
4.2~4.6 |
|
5 1/32~7 7/8 |
3 1/2 Reg |
7.1~7.7 |
|
7 13/32~9 3/8 |
4 1/2 Reg |
17.0~18.6 |
|
9 13/32~14 1/2 |
6 5/8 Reg |
50.3~57.5 |
|
14 9/16~18 1/2 |
7 5/8 Reg |
65.5~71.9 |
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