China manufacturer 110kw 132kw 160kw CZPT Oil-Injected Fixed Speed Rotary Screw Air Compressor 50Hz 60Hz small air compressor

Product Description

 

Crownwell Oil-Injected Rotary Screw Compressors

 CWD 7-400 & CWD 7-400 PM
Power output: 7-400 kW / 10-500 hp
Delivery rate: 0.8-71.2 m3/min / 28-2514 cfm
Pressure range: 7-13 bar / 100-190 psig

CROWNWELL COMPRESSOR – HIGHEST STHangZhouRD

SIMPLICITY BUT NOT SIMPLE

For 3 generations, customers from mechanical engineering, industry and trade have relied on CZPT know-how when it comes to plHangZhou, developing and manufacturing compressed air systems. They are fully aware of the fact that CZPT AIR is more than just ordinary compressed air: utmost safety, outstanding efficiency, excellent quality, maximized flexibility along with dependable service are the ingredients to transform CZPT AIR into air to work with – in China, in Asia and in more than 102 countries around the world.

The III generation, the basis for economical compressed air production

The Know-How
More than decades of know-how in manufacturing for the compressed air market. World wide knowledge in different compressed air applications have guided the development of customer specified stationary screw compressors.

Technical Advancement for your Benefit
The advantage of CZPT lies in its simplified construction. Fewer components are utilized. This means a 60% reduction in main and wearing parts and over 70% fewer pipes and connections. In turn, this greatly reduces the risk of leakages, making the system environmentally friendly. Safe direct drive operation without V-belt transmission.

The CZPT CZPT works in the following way:
Ambient air is drawn through the intake filter and the multifunctional control system into the CZPT block. This block consists of a pair of screw rotors. The main rotor, driven by an electric motor, takes the secondary rotor with it. The air is drawn in by the rotation of both of the interlocking rotors and is continually compressed. During rotation, coolant is injected into the rotors and forms a hydrostatic film between the main and secondary rotors. The function of the coolant is to seal the rotors, lubricate the bearings and adsorb the compression heat. Before compressed air leaves the compressor ( at 80 ºC approx.) it is separated from the coolant before being cooled in the aftercooler to approx.. 8ºC to 12ºC above the ambient temperature. The coolant then passes to the thermostatic control block and filter, before entering the cooler where it is cooled from approx.. 80ºC down to 50ºC. It is then injected back into the CZPT block.

Features:
Direct drive via flexible coupling.
Fully encapsulated CZPT CZPT block.
Standard electric motor Protection Index IP23 and IP54.
User friendly service access.
Top quality, washable, oil resistant sound insulation.
Ready for operation, prewired and fully enclosed.
With operating mode selector switch Automatic-Off-Continuous.
Centrally mounted cooling fan provided for compressed air and lubricant coolers.
Compact and neat cabinet design.

Optional Equipment:
Sense of rotation
Multiple unit control with automatic base load selection
Full motor protection
Mains isolator switch for wall mounting

Beyond these features we offer a wide choice of compressed air accessories in reference to our compressor product range.
Energy Recovery Systems CROWNWELL-THERM
Compressed Air Filters
Compressed Air Dryers
Condensate Traps
Oil-Water Separators
Compressed Air Receivers

Crownwell OIL-INJECTED FIXED SPEED COMPRESSOR
 

TECHNICAL SPECIFICATIONS CWD 7-400
(7.5-400kW / 10-500hp)
 

Model Motor Power
kW / hp
Free Air Delivery
m3/min
Noise Level
dB(A)
Dimension
L * W * H
mm
Weight
Kg
7barg 8barg 10barg 13barg
CWD7 7.5 / 10 1.3 1.2 1.0 0.8 66 880*700*920 240
CWD11 11 / 15 1.7 1.6 1.4 1.2 68 1080*750*1000 400
CWD15 15 / 20 2.5 2.3 2.1 1.9 68 1080*750*1000 420
CWD18 18.5 / 25 3.2 3.0 2.7 2.4 68 1280*850*1160 550
CWD22 22 / 30 3.8 3.6 3.2 2.8 68 1280*850*1160 580
CWD30 30 / 40 5.3 5.0 4.5 4.0 68 1280*850*1160 600
CWD37 37 / 50 6.8 6.2 5.6 5.0 68 1400*1000*1290 800
CWD45 45 / 60 8.0 7.3 7.0 5.9 72 1400*1000*1290 850
CWD55 55 / 75 10.1 9.5 8.7 7.8 72 1800*1230*1570 1660
CWD75 75 / 100 13.6 12.8 12.3 10.2 72 1800*1230*1570 1800
CWD90 90 / 125 16.2 15.5 14.0 12.5 72 1800*1230*1570 1900
CWD110 110 / 150 21.2 19.8 17.8 15.5 72 2400*1470*1840 2500
CWD132 132 / 180 24.5 23.2 20.5 17.8 75 2400*1470*1840 2700
CWD160 160 / 215 28.8 27.8 25.0 22.4 75 2400*1470*1840 3000
CWD185 185 / 250 32.5 31.2 28.0 25.8 75 3150*1980*2150 3500
CWD200 200 / 270 36.0 34.3 30.5 28.0 82 3150*1980*2150 4000
CWD250 250 / 350 43.0 41.5 38.2 34.9 82 3150*1980*2150 4500
CWD315 315 / 400 51.0 50.2 44.5 39.5 82 3150*1980*2150 6000
CWD355 355 / 450 64.0 61.0 56.5 49.0 84 3150*1980*2150 6500
CWD400 400 / 500 71.2 68.1 62.8 52.2 84 3150*1980*2150 7200
  • Unit performance measured according to ISO 1217, Annex C, Edition 4 (2009)

Reference conditions:
-Relative humidity 0%
-Absolute inlet pressure: 1 bar (a) (14.5 psi)
-Intake air temperature:  20°C, 68°F

  • Noise level measured according to ISO 2151:2004, operation at max. operating pressure and max. speed; tolerance: ±3 dB(A)

 

Shipping Cost:

Estimated freight per unit.



To be negotiated
Lubrication Style: Lubricated
Cooling System: Air Cooling
Power Source: AC Power
Customization:
Available

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air-compressor

How to Repair and Maintain an Air Compressor

A compressor is a device used to move air from one place to another. Air enters the air compressor through the intake valve. Inside the compressor, the vanes on the inner rotor rotate within an eccentric cavity. The self-adjusting length arm divides the space into multiple cavities of different sizes. As the rotor rotates, air fills the cavity. As air flows around the cavity, it builds pressure and is squeezed out of the compressor output.

Positive displacement

Positive displacement air compressors use reciprocating pistons to compress air. Gas is drawn in during the suction stroke and compressed by moving the piston in the opposite direction. It then discharges the compressed air by moving it in the opposite direction. This type of air compressor is most commonly found in automobiles, refrigerators, and other applications that require high pressure. However, it is not as efficient as a centrifugal compressor.
Most modern air compressors use positive displacement. Positive displacement models capture a volume of air in the compression chamber and distribute it when the pump is operating at maximum capacity. They are more economical than their negative displacement counterparts. Reciprocating screw air compressors are the most common positive displacement compressors. The reciprocating screw air compressor adopts a water jacket around the cylinder and is often used in processes such as oil drilling.
A bicycle pump is an example of positive displacement compression. Air is drawn into the cylinder and compressed by the moving piston. A piston compressor works on the same principle, but it uses a rotating crankshaft or connecting rod to complete the movement of the pistons. There are two types of positive displacement compressors: single-acting and double-acting. Both types work on the same principle, both are positive displacement compressors. The difference between the two types is the pressure ratio.
In air compression, positive displacement compression reduces the volume of the fluid and reduces its viscosity. This results in higher pressure ratios and is used in centrifugal, axial, and scroll compressors. Positive displacement is a common feature of most air compressors. Positive displacement compressors offer the same benefits and are more energy-efficient when applied to oil-free and gas applications. This type of compression is usually the best choice for low-pressure applications.

oil free

If you’re looking for an air compressor for your business, consider an oil-free air compressor. These models offer cleaner, quieter operation than traditional air compressors and require less maintenance. They also meet ISO Class 0 or Class 1 air purity requirements. Oil-free air compressors are also quieter, with fewer moving parts and less noise. These advantages make oil-free air compressors an ideal solution for many commercial applications.
Air purity is critical in many industries. Even the tiniest drop of oil can damage production equipment or damage products. The best way to find an oil-free air compressor for your business is to consider the process and end product. As air quality improves, more and more businesses are turning to oil-free compressors. Some of the advantages and disadvantages of these air compressors are:
When choosing an oil-free air compressor, it is important to understand the terminology used in the industry. Knowing these terms will make it easier for you to choose the right compressor for your needs. ACTFM, or actual cubic feet per minute, is an industry term for measuring the amount of air pumped in one minute under rated conditions. Although a simple number, it can be very useful in determining which type of air compressor is best for your application.
The ISO 8573-1 international standard defines air quality and provides air purity classifications. The strictest classification is air purity class 0. Many manufacturers claim that oil-free air compressors meet this standard. However, a class 0 oil-free air compressor does not necessarily mean that the air is free of contaminants. In fact, Class 0 is the benchmark for air purity. While zero air quality is the highest level, that doesn’t mean it’s completely oil-free.
air-compressor

double acting

A double-acting air compressor is a device that uses compressed air to generate electricity. Its working principle is based on piston and connecting rod. The connecting rod connects the crankshaft to the piston through pins and caps. The piston moves as the piston moves. Rods are usually made of forged carbon steel. In terms of service and maintenance, double-acting compressors require regular vise maintenance and proper cleaning.
The displacement of the compressor is a measure of the displacement that the piston can produce in a certain period of time. Displacement is usually expressed in actual cubic feet per minute. The exact calculation depends on the type of cylinder and the configuration of the compressor. Single-acting cylinders can have head-end or crank-end displacement, both of which can be measured using the displacement equation. A double-acting air compressor will use this equation. 4 and 6 calculate the displacement.
Double-acting air compressors have multiple cylinders and are made of cast iron. They are water-cooled and have a mechanical connection between the piston and connecting rod. A double-acting compressor compresses air twice per revolution of the motor. One cylinder moves up, while the other cylinder moves down. The piston moves down, allowing air to enter through valve #1. During the operation of the compressor, the temperature of the air and gas increases.
Double-acting air compressors typically have high pressure and are considered workhorses. Double-acting compressors also feature intercooling and double compression. As a result, these machines tend to last longer than single-acting compressors. Its low speed and dual compression make it a workhorse in the compressor industry. Double-acting air compressors are workhorses and versatile devices.
air-compressor

fuel tank pressure switch

You can adjust the pressure in the air compressor tank by adjusting the differential pressure. You can turn the mainspring clockwise or counterclockwise to increase or decrease the pressure. This valve will open when the pressure is low enough to start the compressor. If the pressure is too low, the valve should be closed. The cut-in and cut-out pressures should be set to appropriate values. After adjusting the tank pressure, check the hysteresis of the tank pressure switch and set the desired shutoff pressure.
If the pressure in the tank falls below the cut-in level, the tank pressure switch must be replaced. You can test the switch with a multimeter. Make sure the switch is not damaged. If you can’t find the switch, you can look at the other sections. If you find any damaged or missing parts, you should replace them. Otherwise, it may be time to check the tank pressure switch. You may need to disassemble the compressor and remove the switch.
The fuel tank pressure switch is an important part of the air compressor. It keeps you informed of the amount of air delivered by the compressor. If your tank or tank is damaged, your readings will be wrong. If the pressure switch is damaged, it will not function properly and result in incorrect readings. Fortunately, there are some easy ways to fix this. To prevent this from happening, keep the tank pressure switch in good condition.
When the air pressure in the tank drops to the cut-in pressure setting, the switch allows power to flow through it. This will start the motor and pump of the air compressor. Then, if the pressure in the tank rises above the cut-off level, the switch will trip and stop the compressor. This will prevent it from being over-pressurized. Power flow will continue to flow to the motor. Depending on your compressor model, you can change the cut-in and cut-out pressures as needed.

energy source

The power supply of the air compressor is very important. Most air compressors run on 12 VDC, which is ideal for automotive use. Alternatively, you can buy a switching power supply for around $20. No matter which power supply you choose, you must ensure that it can support the maximum current of the compressor. You can find power supplies in all sizes, from quarter-horsepower to five-horsepower.
The voltage required for a three-phase air compressor will vary. Three-phase air compressors require three separate power cords and a three-phase electrical service panel. This is because a standard 120/240-volt electrical service panel is not sufficient to power a three-phase compressor. Additionally, three-phase compressors require three separate isolated wires for the engine and motor circuits. Three-phase compressors do not require a neutral wire.

China manufacturer 110kw 132kw 160kw CZPT Oil-Injected Fixed Speed Rotary Screw Air Compressor 50Hz 60Hz   small air compressor China manufacturer 110kw 132kw 160kw CZPT Oil-Injected Fixed Speed Rotary Screw Air Compressor 50Hz 60Hz   small air compressor
editor by CX 2023-04-20

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