China Oil & Gas Synchronous Water Lubrication Rotary Screw Oil-Free Textile Water Lubricated Screw Air Compressor

Product Description

Product Details

Product Name: CZPT Mini Stationary Air Compressor 
Model number: ZW-7.5
Maximum Pressure:10BAR/145PSI
Working Pressure: 7 – 10bar (100 – 145psi) 
Air Delivery/capacity: 1 – 1.2m3/min 
Motor Power: 7.5kw/10hp 
Lubricating Water Amount: 20 L
Rotation Rate : 2940 rpm
Noise Level: 70 dBA
Type of Driving: Directly Driven
Type of Cooling: Air Cooling/Water Cooling 
Dimension: 1135×800×1000 mm
Weight: 480kg
Air Outlet Discharge Size: G1″

Parameters

MODEL  MAXIMUM WORKING PRESSURE FREE AIR DELIVERY* OF UNIT AT WORKING PRESSURE MOTOR NOISE LEVEL Lubricating Water Rotation Rate AIR OUTLET DISCHARGE SIZE WEIGHT DIMENSIONS
Amount
Bar PSI l/s CFM m3/min kW HP dBA L rpm (mm) KG (mm)
ZW-7.5 7 102 20 43 1.2 7.5 10 61 20 2940 G1 480 1135×800×1000
8 116 18 39 1.1
10 145 17 36 1
ZW-11 7 102 27 57 1.6 11 15 61 20 2940 G1 500 1135X800×1000
8 116 25 54 1.5
10 145 22 46 1.3
ZW-15 7 102 40 86 2.4 15 20 61 27 2940 G1 520 1400×1000×1200
8 116 38  82 2.3
10 145 33  78 2
ZW-18.5 7 102 52 111 3.1 18.5 25 61 27 2940 G1 520 1400×1000×1200
8 116 47 100 2.8
10 145 42 89 2.5
ZW-22 7 102 62 132 3.7 22 30 61 27 2940 G1 560 1400×1000×1200
8 116 57 121 3.4
10 145 50 107 3
ZW-30 7 102 87 186 5.2 30 40 64 40 2940 G11/2 1050 1920×1170×1320
8 116 78 168 4.7
10 145 72 154 4.3
ZW-37 7 102 102 218 6.1 37 50 66 40 2940 G11/2 1050 1920×1170×1320
8 116 93 200 5.6
10 145 83 179 5
ZW-45 7 102 125 268 7.5 45 60 66 40 2960 G2 1610 1920×1170×1320
8 116 113 243 6.8
10 145 100 214 6
ZW-55 7 102 167 357 10 55 75 66 100 2960 G2 1610 1930×1320×1535
8 116 150 321 9
10 145 130 214 7.8
ZW-75 7 102 271 357 13 75 100 70 100 2960 G2 1880 1930×1320×1535
8 116 200 321 12
10 145 167 279 10
ZW-90 7 102 258 464 15.5 90 125 70 180 2970 DN80 2700 2150×1600×1000
8 116 233 429 14
10 145 208 357 12.5
ZW-110 7 102 333 554 20 110 150 72 200 2970 DN80 3100 2150×1600×1000
8 116 300 500 18
10 145 267 466 16 
ZW-132   7 102 417 893 25 132 180 72 240 2970 DN80 3250 2150×1600×1000
8 116 383 821 23
10 145 333 814 20

Advantages

√ Simple
One screw rotor and 2 gate rotors which are positioned at right angle to the axis constitute 2 compressing rooms. Therefore, the screw rotor with 6 grooves compresses as many as 12 times per rotation.
√ Quietness
Without applying thrust load to the axis direction of the rotor, the force in the circumference direction rotates quietly with good balance. As a result, the load to the bearing is lightened, minimizing the generation of noise or vibration.
√ Durability
The gate rotors are rotated following the rotation of the screw rotor along its gear. The water film formed on the screw rotor’s gear and the free floating mechanism maintains the high efficiency for a long time (in case of water lubrication).
√ High Efficiency
Since the lubrication water is jetted in the compressing process, the compression is done smoothly under almost even temperature, realizing ideal, safe and highly efficient compression with slow rotation (in case of water lubrication).

Comparison Water Lubricated oil-free single screw air compressor Dry oil-free double screw air compressor
Air Discharge Temp About 50ºC About 180-200ºC
Clearance Volume Rotor has been used twice through 1 circulation
No clearance volume left
Rotor has been used once through 1 circulation 
Existing clearance volume
Air Delivery Ideal isothemal compression,air delivery volume5%-12% more Energy lost due to hot air discharge
Efficiency Normally:59-6.4 kw/(m3/min) Normally:6.0-6.6 kw(m3/min)
Air Quality 100% oil-free Oil in the gear,high risk of air quality
Air Purity Purified by water,clean air after separation Directly compressed then discharge,containing dust and oil stain
Structure Balance Radial and axial loads cancel each other Radial load is not been balanced
Noise and Vibration Simple structure,Low vibration and less noise,Normally:60-65 dB(A) High frequency noise due to screw grinding,Normally:64-78 dB(A)
Durability Rotation speed 3000r/min,theoretically zeao load,long lifetime of screw(30000h),star wheel(50000h) Rotation speed 18000r/min,high loads on crews,short lifetime of screw(8000-18000h)
Installation Only a few spare parts,canbe installed and adjusted separately Complex construction,needs special technical support for installation
Maintenance Only replaced air filter and water filter,easy maintenance and low cost Many spare parts and less maintenance cycle,high cost

Application

Technical Solutions

Does the water corrode the air compressor system?
Water lubricated compressor is desirable to use pure drinking water standards,parts and materials is conform to the international standard grades of 304 and 316 stainless steel,will never rust.
Does the water affect the service life of bearings?
Uses a high-tech nanotechnology,customized silicon carbide bearing and ceramic bearing,lubrication with water directly,won’t any problems
Will the efficiency of water lubrication oil free compressor go down?
Technology is the only truly grasp the essence of a single screw manufacturing company in the world,inherited the Germany hundred processes and technologies,so the air end warranty for 2 years,the service life of up to 10 years or more,a single screw air end efficiency does not decrease more than 5% after 6 years.
Does the water form scale?
System uses pure water which is accord with driking water standards,water has been circulating in the system;and every 200hours total,the system will automatically change the water,make sure the water dows not increase the calcium content,and actively running a tempreature not higher than 50ºC,there is no risk of fouling.
Is the water content in water lubrication compressor air high?
After air compression,the water content has reached saturation,the water content of the compressed air only related to the tempreature,there is no relationship with other,the temperature of the compressed air generated by water lubrication unit is not higher than 50ºC,so the water lubricated compressed air moisture than other types of compressors units.

Sales Service

 Professional online consultant to solve your question about compressor system.

√ Free site design consultant, and energy saving solution to help you save operation cost.

√ Negotiable technician available to service machinery overseas.

√ Online professional after-service until solve the problem.

√ 1 year warranty after commissioning or 16 months against shipping date, it depends on which 1 come firstly for the whole
machine(except maintenance consumable).

√ A sufficient number of spare parts are available, make sure the good after service.

Certificate

About Mikovs
 

Mikovs Compressor      

  • Founded in 2011
  • Main product: air compressors, air dryers and air filters
  • Professional R&D team, accept customization order
  • Strong quality control team, quality is strictly controlled
 

RFQ

Q1. Are you trading company or manufacture ?

A: We are professional manufacture of screw air compressor more than 8 years.

 

Q2. How long is the delivery time ?

A: For standard voltage ,15 working days. Non-standard ,please contact our sales.

 

Q3. What’s payment term ?

A: T/T, L/C, D/P, Western Union, Paypal, Credit Card, and etc. Also we could accept USD, RMB, Euro and other currency.

  

Q4. How about your after-sales service ?

A: 1.Provide customers with installation and commissioning online instructions.

2. Well-trained engineers available to overseas service.

3.Worldwid agents and after service avaiable.arrange our engineers to help you training and installation.

 

Q5. How about your warranty?

 A: One year for the whole machine and 2 years for screw air end, except consumable spare parts.

 

 Q6. Do you have any certificate ?

 A: Yes, per different customer’s market need ,we can offer CE ,ISO etc certificate.

 

Q7. What about the maintenance ?

 A: First maintenance need to be done after 500Hours, and then every 2000-3000 hours to do the normal maintenance,
and consider the actual environment.

 

Q8. How do you control quality ?

A: 1.Raw- material in checking.

  2.Assembly.

 3.Worldwid after service available.arrange our engineers to help you training and installation.

 

 

Q9. Do you offer OEM service ?

A: Yes.

Choosing an Air Compressor

Considering a new Air Compressor? Here are some tips to make the decision easier. Learn the pros and cons of each type, including the differences between oil-injected and oil-free models, single stage and positive displacement. In addition, learn more about the different technologies that are available for your air compressor. It is important to choose an appropriate unit for the type of work you do. Here are some of the best compressors available today.
air-compressor

Positive displacement

There are several different types of air compressors, but most are positive displacement air compressors. They use a rotary or reciprocating component to compress air. The reciprocating component compresses air by reducing the volume of the chamber. Positive displacement compressors are used in bicycle pumps, chemical plants, and refrigerators. Positive displacement air compressors use multiple inlet ports. Despite the various types, the principle of operation remains the same.
Another type of positive displacement air compressor is a reciprocating piston. The piston inside a cylinder moves up and down, causing the compressed air to fill the upper part of the cylinder. These air compressors are used in a variety of different applications, including blowing bottles and gas pipelines. These air compressors can be water-cooled, lubricated, or non-lubricated. Different types have different capacities and air pressures.
A positive displacement flowmeter uses a rotating chamber that divides continuous fluid into discrete portions. The number of times the chamber is filled and discharged can be used to estimate the flow rate. The rotation speed of the measuring chamber is directly proportional to the flow rate. The drawbacks of this type of positive displacement flowmeter are that it is prone to jamming. If the fluid contains particles, it may be too thick for the meter to determine flow rate.
A negative displacement air compressor was invented in 1860 and is the oldest type of compressor. It uses 2 lobes positioned in a circular cavity. One rotor is connected to an engine, while the other pushes the other 1 to spin in the opposite direction. Negative displacement compressors are low-maintenance, but they do require more precision. They are often used in nuclear power plants because they use the kinetic energy of the rotating elements to produce pressure.

Oil-injected

Oil-flooded or oil-injected air compressors use liquid to seal and lubricate moving parts and reduce noise. Oil-flooded air compressors are effective for a variety of pneumatic tools and accessories. Some models have a thermostat that controls the amount of oil used during operation. Other types of oil-flooded air compressors are piston-type models. Here is an overview of the basic differences between these 2 air compressors.
An oil-injected air compressor is more expensive than a comparable oil-free air compressor, but its advantages far outweigh its disadvantages. An oil-free compressor is quieter, requires less maintenance, and has a lower price tag. It also offers a greater degree of air purity. A number of other advantages may also make this type of air compressor the better choice for many industrial settings. If you need a high-pressure compressor in a tight space, consider the benefits of an oil-free system.
Oil-injected air compressors require more maintenance than oil-free models. Both types of air compressors offer similar capacity and ISO 8573-1 Class 0 and 1-2 purity, but the oil-injected systems require more air-treatment components. They require an activated carbon filter and coalescing filter. Oil-injected air compressors will likely remain the standard for industrial air compressors for many years. And since their performance and efficiency are comparable, it may be worthwhile to invest in some point-of-use air treatment.
Both types of air compressors have their benefits. However, choosing between oil-free and oil-injected air compressors is not as straightforward as you might think. Whichever type you choose, make sure it will meet your needs. The benefits of an oil-injected air compressor outweigh their disadvantages. In general, oil-injected air compressors are more durable and can last longer than oil-free models. The only downside is their higher price.
air-compressor

Oil-free

When choosing an air compressor for your company, you’ll need to determine what it is going to be used for. For example, if you’re planning on using it to power multiple workers, you should consider getting an oil-free compressor. An oil-free compressor, on the other hand, is quieter and can power several workers at a time. If you’re a contractor, the most important consideration will be the type of jobs you’ll be doing. Higher air pressure means greater demand for air flow, and more pressure can damage the equipment.
Oil-free compressed air is certified 100% free of contaminants. Technically, oil-free air is not completely free of foreign matter, but it is extremely low within the limits of practical air quality. A technically oil-free air compressor might have a total oil level of 0.003 mg/m3. If you’re in need of a technically oil-free air compressor, you must install an air treatment equipment after your current compressor.
If you’re in the manufacturing industry, a good oil-free air compressor will save you money and reduce your environmental impact. Many of these tools require air compressors to work, and this equipment will ensure that they don’t get contaminated. To buy the best oil-free compressor, you should learn a bit about the different terms used by compressor repair companies. ACFM, for example, is the amount of air that can be compressed in 1 minute at rated conditions.
When you’re using an oil-free air compressor, you should know that the overall life of the device will be much shorter. Compared to an oil-flooded rotary screw air compressor, an oil-free compressor typically has a lifespan of 50 thousand hours. But it’s important to understand that this type of compressor can still cause damage to piping and processes. Therefore, you should choose an oil-free compressor when you need to clean air for your business.

Single-stage

A single-stage air compressor, also known as a piston air compressor, compresses air only once before storing it in a cylinder. This stored air has enough energy to power a variety of pneumatic tools, such as screwdrivers, chisels, and wrenches. These units are also ideally suited for low-flow applications and are widely used in gas stations, auto shops, and various manufacturing plants.
A single-stage air compressor uses 2 valves – 1 for inlet and 1 for outlet – to transfer compressed air. Both valves are actuated by springs. The inlet valve has a slight curvature to provide protection from damage. The compressor’s outlet valve opens when the pressure in the cylinder is higher than the pressure in the storage tank. The piston moves very quickly inside the cylinder, exerting a high amount of force throughout the compression process. This high piston speed is a common cause of compressor wear and tear.
A single-stage air compressor is ideal for smaller tradesmen and small construction crews. Its lightweight and compact design make it easier to transport and store. While it may be tempting to buy the first cheap air compressor you see, it’s important to balance the price against performance to choose the right air compressor for your needs. The best single-stage air compressor is 1 that provides excellent performance and durability. Its two-stage counterpart is designed for larger construction teams and large applications.
The main difference between a single-stage and a two-stage air compressor lies in their capacity. A single-stage air compressor compresses air only once and delivers it into the storage tank, while a two-stage compressor compresses it twice, creating double the pressure. Because of this, single-stage air compressors are cheaper and versatile than their counterparts, which means that they can be used for multiple purposes.
air-compressor

Low-noise

A low-noise air compressor is a type of industrial compressor that is less noisy than regular air compressors. These are generally smaller machines designed for smaller factories and workshops with a few to several employees. They are designed to handle mid-weight volumes of compressed air per day. This type of compressor is especially useful for smaller manufacturing businesses that need to produce compressed air for medical applications. Small breweries can also benefit from the low-noise capabilities of these compressors.
Low-noise air compressors come in various sizes and features. For smaller jobs, you can purchase a one-gallon model that is lightweight and portable. For larger jobs, you can purchase 1 with a larger tank that can provide more pressure for longer jobs. However, a larger tank will make the compressor heavier and harder to transport. To avoid this, make sure to check the size of the tank and how much power it can handle.
Considering a low-noise air compressor for your business? If so, you’ve come to the right place. There are a variety of affordable and dependable low-noise options to choose from. A CAT 10020C, for example, is designed to provide high-volume air to many outlets at once. A CAT 10020C comes with a 10-gallon tank, wheels, and a carrying handle.
Noise levels can also affect the productivity of employees. When employees work with air compressors in close proximity to each other, they may develop tinnitus. If employees are free from tinnitus because of the loud noise, they are likely to work more efficiently. Moreover, it will be easier for them to focus and communicate efficiently. If you need a compressor, a low-noise 1 is an excellent choice.

China Oil & Gas Synchronous Water Lubrication Rotary Screw Oil-Free Textile Water Lubricated Screw Air Compressor  China Oil & Gas Synchronous Water Lubrication Rotary Screw Oil-Free Textile Water Lubricated Screw Air Compressor

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