Industrial Archives - SOLLANT- Top Manufacturer of Air Compressor, Generator, Drilling Rig in China

Air compressor noise prevention method

sollant — Mon, 27 Mar 2023 03:06:57 +0000

Air compressors are electromechanical equipment widely used in industrial production, but the noise during the operation of air compressors is very large, usually 90~110dB(A), and has low frequency characteristics, which seriously endangers the surrounding environment, especially at night. The extent can reach hundreds of meters. Therefore, air compressor noise reduction is a common difficulty in industrial production noise control. According to its principle, high-pressure screw air compressors can be divided into two categories: volumetric type and impeller type. The air compressor is a comprehensive noise source. The noise of the air compressor is usually composed of the air driving force noise of the radiation source at the intake and exhaust ports, the reflective noise generated by the molecular thermal movement components, and the vibration of the permanent magnet motor.

Air compressor noise control methods:Assemble the muffler at the air inlet. Generally, the air inlet can be pulled outdoors, and then the muffler can be refitted. Because the noise of the air inlet has a low frequency characteristic, it is generally necessary to modify the characteristic impedance composite muffler, micro-perforated plate composite muffler, Venturi nozzle muffler, etc.

Air compressor shock absorber The screw permanent magnet air compressor vibrates very much, and it is often necessary to carry out shock absorber treatment on the motor shaft. The shock absorber design and shock absorber product selection are carried out according to the weight of the air compressor and the vibration frequency. The pipeline from the exhaust pipe of the air compressor to the gas cylinder is subjected to the pressure pulsation effect of the exhaust pipe, resulting in vibration and radiation noise. It will not only lead to fatigue damage of pipelines and support frames, but also affect the surrounding environment. Therefore, anti-vibration and noise reduction are adopted for the pipeline. It is common to modify the intercepted filler in the exhaust pipe and bypass the resonance length.

Assembling sound insulation covers for air compressors In places with high requirements for natural environmental noise, for the noise of air compressors, only assembling the muffler at the air inlet usually cannot meet the noise reduction regulations. Solution, retrofitting sound insulation enclosures on all generator sets is the main measure to prevent this type of noise. The design of the sound insulation cover should ensure its tightness, so as to obtain better sound insulation effect. In order to facilitate maintenance and disassembly, the sound insulation cover can be designed as a detachable type, leaving access doors and windows. At the same time, attention should be paid to the problem of heat dissipation of the unit, and mufflers should be assembled at the inlet and ventilation ports.

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An important factor for insufficient heat dissipation of permanent magnet variable frequency air compressors

sollant — Fri, 03 Mar 2023 05:04:13 +0000

Causes of Insufficient Heat Dissipation in Permanent Magnet Variable Frequency Air Compressors

Environmental factors often have a great influence on the state of ventilation and heat dissipation. The surrounding environment of the permanent magnet variable frequency air compressor has the following three important factors affecting heat dissipation: the partition wall or other obstacles placed by the permanent magnet variable frequency air compressor are too close In addition, there may be other heat sources near the permanent magnet variable frequency air compressor. In this regard, it is recommended to install and use the permanent magnet variable frequency air compressor in strict accordance with the installation and operating environment requirements of the permanent magnet variable frequency air compressor.

A clogged radiator can also be a problem. Because there may be a lot of dust around the permanent magnet variable frequency air compressor, it will cause long-term operation and cause a layer of dust or sludge on the surface of the radiator, which will affect the heat dissipation effect. A dirty oil filter may also cause a certain degree of overheating of the permanent magnet variable frequency air compressor. Because the oil filter of the permanent magnet variable frequency air compressor will be too dirty so that the oil cannot enter the permanent magnet variable frequency air compressor according to the normal flow, then the permanent magnet variable frequency air compressor will heat up rapidly due to the lack of cooling lubricating oil. Of course, the cooling oil level is too low. In this regard, it is suggested that the permanent magnet variable frequency air compressor should be regularly maintained and maintained to prevent the occurrence of the above state.

If there will be corresponding problems due to low oil grade or poor oil quality, the permanent magnet variable frequency air compressor should use the manufacturer’s original special permanent magnet variable frequency air compressor oil. This makes the return viscosity and specific heat not up to the standard and causes the problem of excessive temperature.

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How to Choose an Industrial Air Compressor ?

sollant — Sun, 12 Apr 2020 16:05:18 +0000

When we buy industrial air compressors, have we considered how to match the model is the best? Is it the most energy-efficient? Have we considered the following 9 aspects?

What is the minimum working pressure required for the production line?

We have learned from long-term customer communication that some customers only need 0.6MPa pressure on-site to meet production, but many customers choose an air compressor with a supply pressure of 1.0MPa when purchasing an air compressor.

Every time the pressure increases by 0.1MPa, the energy consumption increases by about 7%. When selecting the air supply pressure of the air compressor, the actual demand pressure on the production site must be considered.

Is the gas demand of the production line stable?

When selecting an industrial air compressor, it is necessary to consider whether the gas consumption of the production line is balanced, whether there are peaks and valleys.

If the air demand of the production line is very stable, it is recommended to choose a power frequency air compressor; if the air demand of the production line is very unstable, it is recommended to choose a permanent magnet variable frequency air compressor.

Are the compressed air pipelines reasonably arranged?

When we select industrial air compressors, we also need to consider whether the compressed air pipeline layout is reasonable. The size of the pipe diameter, the number of turning points and the distance between the air compressor and each gas end pipeline are all factors that affect the pressure loss. It is recommended to enlarge the pipeline diameter appropriately.

If the environmental conditions meet the installation requirements of the air compressor and the working conditions permit it, it can be installed near the gas end.

Can the company’s power facilities meet the needs of air compressors?

Due to the relatively large power equipment of industrial air compressors, when we select the air compressor, we need to consider whether the voltage and capacity of the company can meet the power consumption of the air compressor.

When some companies require a relatively stable voltage and current, we recommend that customers select variable frequency air compressors.

Does the industrial air compressor room meet the conditions?

Large industrial air compressors are not necessarily suitable for production lines. Whether the air compressor room can meet the equipment placement and maintenance space is very important. We recommend that there is at least 1 meter of maintenance space between each piece of equipment.

Whether the air compressor room meets the conditions of air intake and ventilation. If the ventilation is not good, the temperature in the equipment room will be too high, which will affect the efficiency and life of the equipment.

What are the quality requirements of compressed air for air-consuming equipment?

Compressed air contains a certain amount of moisture and oil. If the compressed air is directly put into use without treatment, it may cause failures of the gas consuming equipment and product defects.

When selecting the air compressor, you must carefully understand the terminal gas-consuming equipment of the enterprise. According to actual requirements, provide freeze dryers, adsorption dryers, precision filters and other equipment to process compressed air.

Oil free screw type industrial air compressor or oil-injected air compressor?

Oil-injected screw compressors provide compressed media with varying oil content. Oil free industrial air compressors provide oil-free compression media. Nowadays, oil-injected screw air compressors are basically used in industry. The low cost is one aspect. Not every company has such high requirements for compressed air is the main reason.

Oil-free screw air compressors do not involve oil in the compressed air process, so the compressed air can be oil-free and suitable for high-quality air applications, such as food, biopharmaceuticals, precision spraying and other industries. But oil-free means that there is no oil injection involved in the compression process, not that there is no oil in the air compressor.

The so-called “oil-free” means that the gas does not come into contact with oil at all during the compression process, but the compressor bearings, synchronous gears and other parts still need to be lubricated with lubricating oil, but between these lubrication parts and the compression chamber, An effective shaft seal is used for isolation.

Choose air-cooled or water-cooled?

Generally, air compressors mainly have two cooling methods: air-cooled and water-cooled. Which of the two cooling methods is better or worse depends on the environment in which it is used.

For an environment with sufficient water resources, we recommend choosing a water-cooled type. If water resources are scarce, it is recommended to choose an air-cooled type.

The difference between belt connection and straight connection

Belt connection is to use pulley and belt, motor drive mainframe, its advantage is that it can adjust speed through the proportion of pulley, prevent accidental blocking, burn out the motor, save housing space, the disadvantage is easy to slip, transmission efficiency is low, a direct connection is to connect mainframe and motor through coupling.

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Air Compressor Industrial Applications

sollant — Sun, 12 Apr 2020 15:11:22 +0000

Since screw air compressors have been used in industry, they have been very popular. At present, the demand for screw air compressors is gradually increasing. Air compressor application is very extensive, and are almost all used in factories, enterprises, mines, and other industrial fields. The application of rotary compressors is diverse.

Therefore, the requirements for the equipment are also different due to different use occasions. For example, the food and medicine industry generally uses oil-free air compressors, while some special industries require explosion-proof air compressors, so the selection can be based on the company’s own needs to make sure.

A screw air compressor is indispensable gas equipment in the production process of modern enterprises. It is an important gas source for enterprise production. Its application range is wide. The main screw compressor application includes the following:

Glass factory: blowing bottles and glassware, blowing lamps and electronic tubes, combustion gas, the transmission of raw materials, pneumatic control.

Iron and steel plant: deaeration gas, material truck positioning, slag chamber drilling, unloading bag, driving clutch and brake, conveying device, driving lubrication system, driving pneumatic tool, pneumatic pick, grinder, sandblasting, blast furnace discharge, Vacuum degassing.

Refinery: Combustion of gas, emptying and cleaning of oil circuits, lifting and elevators, drive control systems, catalyst recirculation, sandblasting, painting.

Wood and furniture processing: spray cleaning, dip-dye wood, bending and straightening, pneumatic tools, engraving tools, drilling machines, polishing machines, sanding machines, sandblasting, painting, water spraying devices.

Mine: Use air for ventilation, use air to remove water, filter fine chips, drive rock drills, pneumatic drills, blowholes, pile drivers, rock drills

Papermill: air cleaning equipment, lifting and elevator, roll feeding, pressing paper products, driving paper breaker, feeding pneumatic control, removing the waste paper, vacuum drying.

Sheet metal workshop: drive packaging presses, drive platen chuck clutches and positioners, pneumatic tools, finishing hammers, pneumatic picks, drill bits, grinders, cranes and elevators, riveting machines, sandblasting, and spraying.

Plastic manufacturing: casting blanks, inflation of plastic air objects, inflation into a tube shape during extrusion, vacuum or pressure molding, and cylinder operation.

Pharmaceutical manufacturing: stirring liquid, antibiotic fermentation gas, mixing and stirring raw materials, driving centrifuge, pneumatic control, jet powdering, spray drying.

Factory maintenance: air jet cleaning, driving tools (steam hammer, concrete vibrator, drill bit, grinder, crane, paving stone crusher, riveting gun, pipe reel, wrench), sandblasting, spraying metal, spray paint, water spray system.

Aircraft manufacturing: spray washing machines, mold ejection, drive assembly tools, drilling rigs, steam hammers, reamers, riveting guns, screwdrivers, forging hammers, metal forming presses, sandblasting, and painting.

Quarry: Lifting and handling materials, rock drilling rigs, gas supply, drilling and blasting machines, rock drilling rigs, hand drills, water pumps.

Thermal power plant: cleaning pipes, blowing off soot, cleaning boiler and condenser pipes, jet cleaning, conveying pulverized coal, removing sewage, pneumatic control.

Hydropower plant: engine control, ship lock maintenance, drive controller, drive lubrication pump, drive ship lock, start control, cleaning garbage net.

Casting workshop: iron wagon positioning, cleaning equipment, and conveying, driving pneumatic tools, sanding machines, grinders, elevators, pneumatic picks, compactors, steel brushes, sandblasting, sand screening, mud blasting cores.

Cement manufacturing: cement slurry mixing, cement bag cleaning and sealing, raw material mixing, dump truck, cleaning equipment, cement kiln cleaning, pneumatic control.

Chemical plant: aeration and mixing, gas for separation tower, conveying, lifting liquid, spraying, cleaning pipes, pneumatic control, process gas, and conveying liquid.

Food industry: mixing liquid, gas for fermentation tank, cleaning equipment with nozzles, conveying raw materials, food dehydration, filtration.

Automobile manufacturing: spray washing machine, drive assembly tool, pneumatic control, forging workshop, casting workshop, sheet metal workshop.

Beverage factory: bottle washing machine, canning machine, spraying inside wine barrel, gas for the food industry.

The above is the major application of compressors. Because each production process has different requirements for compressed air, when choosing an air compressor, you must choose according to the working conditions of the company to ensure that the selected equipment can meet the company’s production gas requirements.

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Application of Air Compressor in Iron and Steel Industry

sollant — Fri, 06 Mar 2020 15:11:21 +0000

The iron and steel industry refers to the industry that produces pig iron, steel, steel, industrial pure iron and ferroalloys, and is one of the basic industries in all industrialized countries in the world. Economists usually regard steel output or per capita steel output as an important indicator of various countries’ economic strength.

The steel industry is one of the pillar industries of a country. It belongs to heavy industry, and the scale of these enterprises is very large, usually with tens of thousands or hundreds of thousands of people. The construction of a steel company usually takes years or even decades.

The equipment adopted by the new iron and steel enterprises is the most advanced, while the equipment of some old iron and steel enterprises needs to be modified to improve the production efficiency of the enterprises and make the old enterprises glow with new vitality. In this process, the compressor is inseparable everywhere.

A large iron and steel enterprise generally starts from the ore entering the plant to smelting shaped steel ingots and iron ingots, or further processing into steel plates, steel wires, or other shaped steels.

As a typical large-scale industrial enterprise with high energy consumption, iron and steel enterprises account for a large proportion of all energy consumption (approximately 5%-15% of total energy consumption). In steel companies, compressed air is widely used as an energy medium.

The use of compressed air in steel companies is included in all production processes. Its main uses can be divided into sintering pneumatic conveying, blast furnace injection, continuous casting steam spray cooling, bottom blowing of the converter, surface blowing of steel belt, various pneumatic instrument valves, air motors, pulse bag filters, etc.

In the iron and steel production process, the ore is first sintered, and then the sintered iron ore is transported to the kerosene iron blast furnace to be smelted into molten iron and cast into iron ingots.

To make steel ingots, the iron ingots must be sent to the steelmaking blast furnace for re-smelting, changing from iron to steel. If you want to obtain other alloy steels, you must add appropriate elements in the smelting process to make different types of alloy steels.

A large iron and steel enterprise has many sintering workshops (or plants), iron-making blast furnaces, steel-making plants, etc., and they are widely distributed. Therefore, many air compressor stations are set up in general iron and steel enterprises to meet the gas demand of various gas points.

On the one hand, each air compressor station is relatively independent and easy to manage; on the other hand, it can meet the needs of different compressed air quality.

General steel enterprise air compressor station configuration:

The types of air compressors used by iron and steel enterprises generally include centrifugal and screw compressors. At present, piston air compressors have been basically eliminated.

The centrifuge air compressor station is generally equipped with 2-9 centrifuges, usually with a displacement of 100-300m³/min. According to production needs, it is generally set below 1.3Mpa, of which 0.38MPa and 0.5Mpa are used for steelmaking and continuous casting, 0.8 MPa is for power/instrument use, and 1.3Mpa is for coal injection blast furnace.

The screw compressor air compressor station is generally equipped with 2-8 screw compressors, most of which have an air displacement of less than 10-40m³/min. The screw air compressor is mainly used as an auxiliary air source for the centrifugal air compressor.

Uses and characteristics of compressed air in iron and steel enterprises:

The distribution of compressed air in the ironmaking equipment of iron and steel enterprises is mainly in the sintering zone, raw material zone, coke oven zone, and blast furnace zone.

The compressed air in the steelmaking equipment of iron and steel enterprises is mainly used for continuous casting, converter pneumatic and purging, and aerosol cooling for continuous casting.

The hot rolling mill’s compressed air is mainly used for rolling mill and furnace pneumatic equipment and cold rolling purging. Used for strip steel cleaning, pickling, continuous winding, pneumatic equipment and hot-dip galvanizing equipment.

A large amount of compressed air is also required for the injection of coal ash required for ironmaking blast furnace and blast furnace combustion.

For example, a 2500m³ ironmaking blast furnace usually requires 4 40m³/min screw air compressors, of which 3 are normally open and one is used as a standby machine.

The blast furnace’s blowing equipment generally selects a high-pressure fan, usually with a pressure of 0.2 MPa. The amount of compressed air used for conveying coal to the blast furnace.

The quality requirements of compressed air for iron and steel enterprises:

The quality of compressed air demanded by iron and steel enterprises is usually not too high. Except for some of the compressed air used in instruments that require refrigerating dryers, most of them do not need to be processed too precisely.

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