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Professional manufacturer of oil-free air compressor in Hainan

although Hainan is a major non-traditional industrial area, in recent years, with the rapid development of industries with increasing demand for clean compressed air such as medicine, food, electronics and laboratories, oil-free air compressor manufacturers with R & D and manufacturing capabilities have emerged locally. These enterprises are based in Hainan and serve the markets of south China and Southeast Asia, focusing onoil-free screw machineand energy-efficientindustrial air compressorproduct.

Core advantages and technical features

• full range of oil-free design, conforming to ISO 8573-1 Class 0 (Zero grade oil pollution) standard;
• permanent magnet variable frequency drive and intelligent control system are adopted, and the energy saving rate reaches 20%- 35%;
• adapt to the island environment with high humidity and salt spray, and the protection level of the whole machine reaches IP55;
• supports customized integration solutions, including integrated delivery of dryers, filters and gas storage tanks.

The value of choosing Hainan Air Compressor Manufacturers

compared with foreign brands, local brandshainan Air compressor manufacturerprovide faster response service, on-site debugging support and long-term maintenance guarantee. Asmanufacturer, it can flexibly meet OEM/ODM requirements, and provide targeted gas source solutions for Hainan characteristic scenarios such as medical Cleaning workshops, aquatic product processing, and filling products.

Oil-free screw host intelligent control system island anti-corrosion structure · ISO Class 0 oil-free certification

I, 30m³ /Typical weight range of 185kW air compressor

30m³/min (That is, the exhaust volume is 30 cubic meters per minute) the industrial air compressor equipped with 185kW motor is usually a twin-screw fixed unit, and the weight of the whole machine is generally4,200 kg to 5,800 kgbetween. The specific value depends on the structural design: the complete set of system with integrated dryer, gas tank and sound enclosure, the weight may be close to 6 tons; And the bare metal configuration containing only the base of the host motor, it can be as low as about 4.2 tons.

II. Key factors affecting the weight of air compressor

• cooling mode: Water-cooled models need to be equipped with pipelines and heat exchangers, which are usually 3-3 heavier than air-cooled models- 8%
• pressure Level: 0.8 MPa conventional models are about 5-less than 1.0 MPa and above high-pressure models- 10%
• integration: whether the built-in refrigerated air dryer, filter, PLC control system, etc. significantly increase the quality by auxiliary attachment
• material and manufacturing process: cast iron head, thickened steel sound enclosure, heavy shock absorber base all increase the weight of the whole machine

3. Why should we pay attention to the weight of air compressor when selecting?

Air compressor weight direct correlationfoundation load-bearing design,plant floor load checkandhoisting and transportation scheme. Especially in renovation projects or high-rise industrial plants, overweight equipment may lead to structural safety risks. It is recommended to clearly mark the total weight of the equipment, the position of the center of gravity and the layout of the lifting point in the technical agreement.

30m³/min • 185kW • Typical machine weight: 4.2-5.8 tons

IV. Suggestions on extended selection parameters

in addition to weight, 30m³ /185kW air compressor selection should also be confirmed synchronously:rated exhaust pressure (MPa),specific power (kW /(m³/min)),noise value (dB(A)),cooling water consumption (if applicable)andIP protection level. Priority should be given to products that meet the first-class energy efficiency of GB 19153-2019 “limited value and energy efficiency grade of volumetric air compressor”, taking into account the long-term operation cost and space adaptability.

Is air compressor a special equipment?

According to the law of the People’s Republic of China on special equipment safety and the latest catalogue of special equipment issued by the General Administration of market supervision (revised in 2023), the air compressor itselfnot special equipment, but its supporting gas tank (pressure vessel) may be included in the scope of supervision.

Key judgment basis: TSG 22-2019 and Pressure Vessel identification

according to the safety technical supervision regulations for fixed pressure vessels (TSG 22-2019), whether special equipment is formed shall meet three conditions at the same time:working pressure ≥ 0.1 MPa,volume ≥ 25 L,medium is gas or liquefied gas. Only when the gas tank in air-compression system meets the above parameters can it be recognized as a special equipment. It must be registered for use, regularly inspected and supervised by the General Administration of market supervision.

Key points of air compressor supervision

• air compressor main engine does not belong to special equipment, and there is no mandatory registration or inspection requirements;
• if the supporting gas tank complies with TSG 22-2019, it belongs to Class II or Class III Pressure Vessels;
• the user unit shall implement the main responsibility of safety, establish a ledger, carry out self-inspection and cooperate with supervision and inspection.

Gas tank (example: 0.8MPa, 50L)

Therefore, the essence of “air compressor supervision” is the supervision of its attached pressure vessels, not the whole machine. Enterprises should check the parameters of the gas storage tank according to the catalogue of special equipment and TSG 22-2019 to avoid compliance risks caused by misjudgment.

Efficient and reliable compressed air condensation and water removal scheme

in industries with strict air quality requirements such as Shandong industrial manufacturing, food processing, automobile assembly and textile, the condensed water carried in compressed air is equipment corrosion, the main causes of pneumatic component failure and product pollution. As the core component of compressed air post-treatment system, condensation and removal of water device can effectively intercept liquid water, oil mist and large particle impurities to ensure the safety of downstream gas use.

Localization and adaptation of Shandong Air compressor accessories selection support

in view of the climate characteristics of alternating high humidity in summer and low temperature in winter in Shandong, we provide corrosion-resistant stainless steel shell and wide temperature range (-20℃ ~ 80℃) the running condensation is separated by water device, and is compatible with common brand air compressor interfaces (such as Atlas Copco, ingersolan, Shou Li, domestic Jaguar, red five rings, etc.). Support customized flange/threaded connection and mounting bracket for quick integration into existing pipeline system.

Collaborative Application of integrated compressed air drying scheme

condensation and removal of water device is often used as the pre-pretreatment unit, which works in coordination with freezing dryer and adsorption dryers: firstly, the liquid water above 90% is removed by three-stage separation of gravity + centrifugal + baffle, and then the liquid water is dehumidified deeply by the latter drying equipment, realize clean air source with pressure dew point ≤-40℃. Supporting gas-water separator and automatic drain valve to eliminate the risk of manual sewage leakage.

• Core advantages:ready-to-use, zero energy consumption operation, maintenance-free design, IP65 protection level
• typical application scenarios:painting Workshop, CNC pneumatic fixture, sterile filling line, laser cutting gas supply
• service guarantee:technical Response Centers in Jinan, Qingdao and Weifang provide on-site working condition evaluation and post-processing equipment selection suggestions.

Key role of hospital compressed air system

hospital compressed air system is an indispensable infrastructure of modern medical institutions, providing clean, dry, oil-free and constant pressure Medical Air for operating rooms, ICU, respiratory therapy, anesthesia equipment and dental units. The system must conformGB 50751 -2012 technical specification for medical gas engineeringmandatory standards to ensure that the gas supply quality meets clinical safety requirements.

Differential application of medical air compressor and dental air compressor

• medical air compressor: dedicated to the central gas supply system, the output pressure is usually 0. 5–0.7 MPa, after multi-level filtration, drying and precision sterilization, it meets ISO 8573-1 Class 1: 2:1 (particle, water, oil) grade;
• dental air compressor: most of them are small oil-free silent models, which directly drive scaler, light curing lamps and pneumatic mobile phones. Refrigerated air dryer and adsorption oil remover must be configured independently to avoid the risk of oral cross infection.

Compliance and system design essentials

according to GB 50751, the hospital compressed air system must realize dual-circuit redundant gas supply, real-time pressure/dew point/oil mist online monitoring, and be equipped with standby units and emergency switching devices. All pipes shall be made of 316L stainless steel, and the welding process shall conform to ASME B31.9 standard to prevent the risk of microbial breeding and metal precipitation.

Air compressor host

Dry filtration

Terminal gas supply
Hospital compressed air system flow diagram

What is the oil content of compressed air?

Compressed air oil content refers to the total oil content in the form of aerosol (oil mist), liquid oil and oil vapor in compressed air, usually in mg/ m³. It is one of the key indicators to measure the quality of compressed air, directly affecting industries with strict cleanliness requirements such as precision manufacturing, food packaging, pharmaceutical production, etc.

ISO 8571-1: internationally recognized cleanliness classification standard

ISO 8571-1 divides compressed air quality into three levels of pollutants: solid particles, water and oil. Among them, the oil content level ranges from 0 (the most strict) to 5 (the highest allowable value),level 0 represents ‘technically accessible oil-free’, not absolute zero oil, but the verified oil content ≤ 0.01 mg/ m³, and there is no oil vapor and oil mist residue.

How to achieve low oil/oil-free compressed air?

• SOURCE control: use oil-free air compressor (such as scroll and screw oil-free model);
• end purification: equipped with high-efficiency oil mist filter (such as condensed or activated carbon composite), the oil content can be reduced to less than 0.003 mg/m³;
• periodic Verification: conduct third-party oil content testing according to ISO 8573-1 to ensure continuous compliance with the target cleanliness level.

Cleanliness level selection needs to match application scenarios

for example, Class 1 is often required for electronic assembly (oil ≤ 0.01 mg/ m³), and general pneumatic tools may be applicable to Class 4 (oil ≤ 5 mg/ m³). Incorrect selection not only increases energy consumption and maintenance costs, but also may lead to product pollution or equipment failure.

Class 0

Class 1

Class 3
oil content grade (ISO 8573-1)
→ increasing oil content and decreasing cleanliness

Why must an independent air compressor room be set up?

According to the “guidelines for the construction of dual prevention mechanisms of safety risk grading control and hidden danger investigation and management in industry and trade industry” and GB 50029-2014 “design specifications for compressed air stations”, Air-compression system of industry and trade enterprises must be arranged for special use, independent air compressor room. This move aims to implement intrinsic safety requirements and avoid multiple risks caused by equipment operation to production areas, office areas and crowded places.

Core Specification basis

• independent data center requirements: air compressor shall not share space with workshop, warehouse or office area; The data center shall have clear enclosure structure and fire separation (fire resistance rating is not lower than Grade II);
• noise isolation: the walls, doors and windows of the data center must meet the sound insulation requirements (it is recommended to calculate the sound insulation capacity ≥ 45 dB), install acoustical material and vibration damping Foundation when necessary;
• ventilation and heat dissipation design: a mechanical air inlet and exhaust system shall be set to ensure that the ventilation times are ≥ 10 times/hour, and a temperature control linkage start and stop device shall be configured to prevent overheating and shutdown in summer.

Typical data center layout (SVG)

Plane diagram of air compressor room

Air compressor unit

Cooling fan

Sound insulation/vibration reduction Channel

Exhaust Louver

Inlet muffler

Implementation suggestions

the newly-built project should reserve the position of independent data center in the planning stage of the general layout; When the existing factory building is transformed, the modular sound insulation cover roof ventilation unit combination scheme should be adopted. Safety warning signs shall be posted in all air compressor rooms and shall be included in the account management of special equipment of the enterprise.

In the design of industrial plant and the deployment of air pressure system, reasonable setting of safe distance around air compressor is the key link to ensure personnel safety, convenient equipment maintenance and compliance with national mandatory standards.

I. Core basis: GB 50029 code for design of compressed air stations

according to current national standardsGB 50029 -2014 design specification for compressed air stationarticle 4.2.3 and article 5.1.5, the minimum clear distance between the air compressor unit and the wall, other equipment or operation channel shall be maintained:

• unit front (Operation side): ≥1.5 m to ensure daily inspection, filter replacement and emergency shutdown operation space;
• back and both sides (non-operating side): ≥0.8 m to meet the needs of heat dissipation and ventilation and basic maintenance;
• when multiple units are arranged side by side: The center distance of adjacent units should be ≥ 2.0 m to avoid airflow interference and heat built-up.

II. Associated security requirements

in addition to the installation spacing, synchronization is also required to meet:

• pressure vessel safety: air storage tank of air compressor is a fixed pressure vessel, which must comply with TSG 21-2016 safety technical supervision regulations for fixed pressure vessels. It is forbidden to pile flammable materials around it, and independent pressure relief channels should be set;
• fire fighting and evacuation: The equipment area should be included in the overall fire protection zone, and the straight line distance from the safety exit ≤ 30 m, and keep barrier-free access no less than 1.2 m wide;
• noise and Vibration Isolation: it is recommended to install anti-vibration pad on the air compressor base, and avoid setting precision instruments or office areas within 1 m around.

III. Visual reference (schematic diagram)

Air compressor unit

≥1.5 m

≥0.8 m

Wall

Figure: minimum safe clear distance between the operating side and the non-operating side of the air compressor (unit: mm)

IV. Implementation recommendations

the design phase should be combined with the comprehensive layout of plant structure, ventilation path and emergency evacuation moving line; The third party with qualification should conduct spacing review and registration of pressure vessels during acceptance. Do not compress the security distance on the grounds of “tight space”-compliance is not a cost, but a bottom line.

In the production process of lithium battery, compressed air is widely used in key links such as electrode coating, pole roll pressure, liquid injection, pneumatic control of clean workshop and maintenance of environmental positive pressure. Any trace amount of oil, particles or water vapor may cause short circuit inside the battery, electrolyte decomposition or batch failure-therefore,lithium battery factory must adopt oil-free air compressorto provide clean compressed air in the true sense.

Why must it be oil-free?

The lithium battery production process requires extremely strict air quality requirements: electrode slurry is extremely sensitive to impurities; The liquid injection process needs to avoid side reactions between oil vapor and electrolyte (such as LiPF); If the clean room gas source contains oil, the accelerated high-efficiency filter is blocked and the HEPA system is polluted.

Mandatory requirements of international standards

• basisISO 8573-1 Class 0standard, clean compressed air requires “zero oil content” (≤ 0.01 mg/ m³, and no oil mist, oil vapor and oil condensate);
• this level can only passtrue oil-free compression technology(Such as oil-free screw, oil-free scroll, and water-lubricated screw), range hood of them cannot meet Class 0 even if multi-stage oil removal filter is added;
• mainstream lithium battery head Enterprises (Ningde era, BYD, LG New Energy) all listed Class 0 oil-free air as a rigid condition for the entry of EHS.

SVG diagram: Oil-Free vs oil-free compressed air risk comparison

Oil air compressor

Oil Mist residue
→ contaminated slurry

Oil-free air compressor

Zero Oil content
→ ISO 8573-1 compliant Class 0