Mine explosion-proof screw machine: mine explosion-proof screw machine damage reasons
Mine explosion-proof screw machine: adopt efficient main machine, advanced structure, high precision, stable operation, low noise, long service life, low maintenance cost, low fuel consumption, high efficiency. Gas control system is stable and reliable, 0-100 load adjustment, can automatically adjust the power consumption according to the actual gas consumption.
With explosion-proof, overload, short circuit, phase break, leakage protection, etc. ; It also has protective devices such as overtemperature, air filter blockage, oil filter blockage, oil core blockage alarm, overtemperature shutdown, as well as triple protection of capacity regulation, pressure control valve and safety valve to prevent overpressure operation. Safe and reliable use. The oil and gas separation filter element adopts imported fine glass fiber to control the oil content of compressed air below 3ppm.
The machine can operate safely near the underground driving face and move forward with the roadway extension, so it can maintain a higher air pressure. Compared with the ground air supply, the pneumatic mechanical efficiency is increased by 30% to 1 times, the power consumption is reduced by 30%, and a lot of pipes are saved.
Reasons for damage of mine explosion - proof screw machine
1. The screw rotates in the cylinder body, and the lubricating oil and compressed gas rub the screw and the body, so that the screw working face is gradually worn: the diameter of the screw is gradually reduced, and the diameter of the inner hole of the body is gradually increased. Thus, the fit diameter gap between the screw and the body increases slightly with the gradual wear of the screw and the body. However, as the resistance of the nose and the shunt plate in front of the body does not change, the leakage flow of the extruded gas increases during propulsion, that is, the flow of gas and lubricating oil from the diameter gap to the inlet direction increases. As a result, the flow out of the machine is reduced.
2. If there are acid and other corrosive substances in the gas, it will accelerate the wear of the screw and the body.
3. The wear of the machine, or the metal foreign matter mixed with the material, will suddenly increase the rotational torque of the screw, more than the strength limit of the screw, leading to screw broken. This is an unusual accident injury.
Mine explosion - proof screw machine repair
1. The screw should be considered according to the actual inner diameter of the body, and the deviation of the outer diameter of the new screw should be given according to the normal clearance of the body.
2. After thread surface treatment with reduced diameter of worn screw, wear resistant alloy is sprayed and ground to required size. This method is usually repaired by a professional painting factory, and the cost is relatively low.
3. Hardfacing wear resistant alloy on the thread part of worn screw. According to screw wear, surfacing 1~2mm thick, then grind screw to specified size. The wear resistant alloy consists of carbon, chromium, vanadium, cobalt, tungsten and boron, increasing the wear resistance and corrosion resistance of the screw. The cost of this kind of processing is very high in professional surfacing plants, except for screws with special requirements, which are rarely used.
4. Hard chrome plating can also be used to repair screws. Chromium is also a metal that is resistant to wear and corrosion, but the hard chromium layer easily comes off.
Shijiazhuang Compus Compressor Co., Ltd. main products are oil-free air compressor, high pressure air compressor, screw air compressor, air compressor, drilling air compressor, oil-free mobile machine, high pressure mobile machine, drilling machine, two-stage compression screw machine, permanent magnet variable frequency screw machine, mine explosion-proof screw machine, air floating centrifugal blower and so on. At present, the company has established 30 customer service networks and more than 100 dealers in the country, to provide customers with pre-sales technical consultation, machine sales, on-site maintenance, parts supply 4S services. The enterprise's good faith service is well received by users. Adhering to the core concept of "quality first, customer satisfaction", we always adhere to provide customers with high-quality products and technical services, we firmly believe that Compus will become your more reliable partner, and are willing to work with you to achieve glory!